Initial implementation of new wallpaper picker.
Change-Id: Ib4c5ac4989b4959fa62465d9cde3cac662e24949
diff --git a/src/android/util/Pools.java b/src/android/util/Pools.java
new file mode 100644
index 0000000..40bab1e
--- /dev/null
+++ b/src/android/util/Pools.java
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.util;
+
+/**
+ * Helper class for crating pools of objects. An example use looks like this:
+ * <pre>
+ * public class MyPooledClass {
+ *
+ * private static final SynchronizedPool<MyPooledClass> sPool =
+ * new SynchronizedPool<MyPooledClass>(10);
+ *
+ * public static MyPooledClass obtain() {
+ * MyPooledClass instance = sPool.acquire();
+ * return (instance != null) ? instance : new MyPooledClass();
+ * }
+ *
+ * public void recycle() {
+ * // Clear state if needed.
+ * sPool.release(this);
+ * }
+ *
+ * . . .
+ * }
+ * </pre>
+ *
+ * @hide
+ */
+public final class Pools {
+
+ /**
+ * Interface for managing a pool of objects.
+ *
+ * @param <T> The pooled type.
+ */
+ public static interface Pool<T> {
+
+ /**
+ * @return An instance from the pool if such, null otherwise.
+ */
+ public T acquire();
+
+ /**
+ * Release an instance to the pool.
+ *
+ * @param instance The instance to release.
+ * @return Whether the instance was put in the pool.
+ *
+ * @throws IllegalStateException If the instance is already in the pool.
+ */
+ public boolean release(T instance);
+ }
+
+ private Pools() {
+ /* do nothing - hiding constructor */
+ }
+
+ /**
+ * Simple (non-synchronized) pool of objects.
+ *
+ * @param <T> The pooled type.
+ */
+ public static class SimplePool<T> implements Pool<T> {
+ private final Object[] mPool;
+
+ private int mPoolSize;
+
+ /**
+ * Creates a new instance.
+ *
+ * @param maxPoolSize The max pool size.
+ *
+ * @throws IllegalArgumentException If the max pool size is less than zero.
+ */
+ public SimplePool(int maxPoolSize) {
+ if (maxPoolSize <= 0) {
+ throw new IllegalArgumentException("The max pool size must be > 0");
+ }
+ mPool = new Object[maxPoolSize];
+ }
+
+ @Override
+ @SuppressWarnings("unchecked")
+ public T acquire() {
+ if (mPoolSize > 0) {
+ final int lastPooledIndex = mPoolSize - 1;
+ T instance = (T) mPool[lastPooledIndex];
+ mPool[lastPooledIndex] = null;
+ mPoolSize--;
+ return instance;
+ }
+ return null;
+ }
+
+ @Override
+ public boolean release(T instance) {
+ if (isInPool(instance)) {
+ throw new IllegalStateException("Already in the pool!");
+ }
+ if (mPoolSize < mPool.length) {
+ mPool[mPoolSize] = instance;
+ mPoolSize++;
+ return true;
+ }
+ return false;
+ }
+
+ private boolean isInPool(T instance) {
+ for (int i = 0; i < mPoolSize; i++) {
+ if (mPool[i] == instance) {
+ return true;
+ }
+ }
+ return false;
+ }
+ }
+
+ /**
+ * Synchronized) pool of objects.
+ *
+ * @param <T> The pooled type.
+ */
+ public static class SynchronizedPool<T> extends SimplePool<T> {
+ private final Object mLock = new Object();
+
+ /**
+ * Creates a new instance.
+ *
+ * @param maxPoolSize The max pool size.
+ *
+ * @throws IllegalArgumentException If the max pool size is less than zero.
+ */
+ public SynchronizedPool(int maxPoolSize) {
+ super(maxPoolSize);
+ }
+
+ @Override
+ public T acquire() {
+ synchronized (mLock) {
+ return super.acquire();
+ }
+ }
+
+ @Override
+ public boolean release(T element) {
+ synchronized (mLock) {
+ return super.release(element);
+ }
+ }
+ }
+}
\ No newline at end of file
diff --git a/src/com/android/gallery3d/common/BitmapUtils.java b/src/com/android/gallery3d/common/BitmapUtils.java
new file mode 100644
index 0000000..a671ed2
--- /dev/null
+++ b/src/com/android/gallery3d/common/BitmapUtils.java
@@ -0,0 +1,260 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.common;
+
+import android.graphics.Bitmap;
+import android.graphics.Bitmap.CompressFormat;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.os.Build;
+import android.util.FloatMath;
+import android.util.Log;
+
+import java.io.ByteArrayOutputStream;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class BitmapUtils {
+ private static final String TAG = "BitmapUtils";
+ private static final int DEFAULT_JPEG_QUALITY = 90;
+ public static final int UNCONSTRAINED = -1;
+
+ private BitmapUtils(){}
+
+ /*
+ * Compute the sample size as a function of minSideLength
+ * and maxNumOfPixels.
+ * minSideLength is used to specify that minimal width or height of a
+ * bitmap.
+ * maxNumOfPixels is used to specify the maximal size in pixels that is
+ * tolerable in terms of memory usage.
+ *
+ * The function returns a sample size based on the constraints.
+ * Both size and minSideLength can be passed in as UNCONSTRAINED,
+ * which indicates no care of the corresponding constraint.
+ * The functions prefers returning a sample size that
+ * generates a smaller bitmap, unless minSideLength = UNCONSTRAINED.
+ *
+ * Also, the function rounds up the sample size to a power of 2 or multiple
+ * of 8 because BitmapFactory only honors sample size this way.
+ * For example, BitmapFactory downsamples an image by 2 even though the
+ * request is 3. So we round up the sample size to avoid OOM.
+ */
+ public static int computeSampleSize(int width, int height,
+ int minSideLength, int maxNumOfPixels) {
+ int initialSize = computeInitialSampleSize(
+ width, height, minSideLength, maxNumOfPixels);
+
+ return initialSize <= 8
+ ? Utils.nextPowerOf2(initialSize)
+ : (initialSize + 7) / 8 * 8;
+ }
+
+ private static int computeInitialSampleSize(int w, int h,
+ int minSideLength, int maxNumOfPixels) {
+ if (maxNumOfPixels == UNCONSTRAINED
+ && minSideLength == UNCONSTRAINED) return 1;
+
+ int lowerBound = (maxNumOfPixels == UNCONSTRAINED) ? 1 :
+ (int) FloatMath.ceil(FloatMath.sqrt((float) (w * h) / maxNumOfPixels));
+
+ if (minSideLength == UNCONSTRAINED) {
+ return lowerBound;
+ } else {
+ int sampleSize = Math.min(w / minSideLength, h / minSideLength);
+ return Math.max(sampleSize, lowerBound);
+ }
+ }
+
+ // This computes a sample size which makes the longer side at least
+ // minSideLength long. If that's not possible, return 1.
+ public static int computeSampleSizeLarger(int w, int h,
+ int minSideLength) {
+ int initialSize = Math.max(w / minSideLength, h / minSideLength);
+ if (initialSize <= 1) return 1;
+
+ return initialSize <= 8
+ ? Utils.prevPowerOf2(initialSize)
+ : initialSize / 8 * 8;
+ }
+
+ // Find the min x that 1 / x >= scale
+ public static int computeSampleSizeLarger(float scale) {
+ int initialSize = (int) FloatMath.floor(1f / scale);
+ if (initialSize <= 1) return 1;
+
+ return initialSize <= 8
+ ? Utils.prevPowerOf2(initialSize)
+ : initialSize / 8 * 8;
+ }
+
+ // Find the max x that 1 / x <= scale.
+ public static int computeSampleSize(float scale) {
+ Utils.assertTrue(scale > 0);
+ int initialSize = Math.max(1, (int) FloatMath.ceil(1 / scale));
+ return initialSize <= 8
+ ? Utils.nextPowerOf2(initialSize)
+ : (initialSize + 7) / 8 * 8;
+ }
+
+ public static Bitmap resizeBitmapByScale(
+ Bitmap bitmap, float scale, boolean recycle) {
+ int width = Math.round(bitmap.getWidth() * scale);
+ int height = Math.round(bitmap.getHeight() * scale);
+ if (width == bitmap.getWidth()
+ && height == bitmap.getHeight()) return bitmap;
+ Bitmap target = Bitmap.createBitmap(width, height, getConfig(bitmap));
+ Canvas canvas = new Canvas(target);
+ canvas.scale(scale, scale);
+ Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG | Paint.DITHER_FLAG);
+ canvas.drawBitmap(bitmap, 0, 0, paint);
+ if (recycle) bitmap.recycle();
+ return target;
+ }
+
+ private static Bitmap.Config getConfig(Bitmap bitmap) {
+ Bitmap.Config config = bitmap.getConfig();
+ if (config == null) {
+ config = Bitmap.Config.ARGB_8888;
+ }
+ return config;
+ }
+
+ public static Bitmap resizeDownBySideLength(
+ Bitmap bitmap, int maxLength, boolean recycle) {
+ int srcWidth = bitmap.getWidth();
+ int srcHeight = bitmap.getHeight();
+ float scale = Math.min(
+ (float) maxLength / srcWidth, (float) maxLength / srcHeight);
+ if (scale >= 1.0f) return bitmap;
+ return resizeBitmapByScale(bitmap, scale, recycle);
+ }
+
+ public static Bitmap resizeAndCropCenter(Bitmap bitmap, int size, boolean recycle) {
+ int w = bitmap.getWidth();
+ int h = bitmap.getHeight();
+ if (w == size && h == size) return bitmap;
+
+ // scale the image so that the shorter side equals to the target;
+ // the longer side will be center-cropped.
+ float scale = (float) size / Math.min(w, h);
+
+ Bitmap target = Bitmap.createBitmap(size, size, getConfig(bitmap));
+ int width = Math.round(scale * bitmap.getWidth());
+ int height = Math.round(scale * bitmap.getHeight());
+ Canvas canvas = new Canvas(target);
+ canvas.translate((size - width) / 2f, (size - height) / 2f);
+ canvas.scale(scale, scale);
+ Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG | Paint.DITHER_FLAG);
+ canvas.drawBitmap(bitmap, 0, 0, paint);
+ if (recycle) bitmap.recycle();
+ return target;
+ }
+
+ public static void recycleSilently(Bitmap bitmap) {
+ if (bitmap == null) return;
+ try {
+ bitmap.recycle();
+ } catch (Throwable t) {
+ Log.w(TAG, "unable recycle bitmap", t);
+ }
+ }
+
+ public static Bitmap rotateBitmap(Bitmap source, int rotation, boolean recycle) {
+ if (rotation == 0) return source;
+ int w = source.getWidth();
+ int h = source.getHeight();
+ Matrix m = new Matrix();
+ m.postRotate(rotation);
+ Bitmap bitmap = Bitmap.createBitmap(source, 0, 0, w, h, m, true);
+ if (recycle) source.recycle();
+ return bitmap;
+ }
+
+ public static Bitmap createVideoThumbnail(String filePath) {
+ // MediaMetadataRetriever is available on API Level 8
+ // but is hidden until API Level 10
+ Class<?> clazz = null;
+ Object instance = null;
+ try {
+ clazz = Class.forName("android.media.MediaMetadataRetriever");
+ instance = clazz.newInstance();
+
+ Method method = clazz.getMethod("setDataSource", String.class);
+ method.invoke(instance, filePath);
+
+ // The method name changes between API Level 9 and 10.
+ if (Build.VERSION.SDK_INT <= 9) {
+ return (Bitmap) clazz.getMethod("captureFrame").invoke(instance);
+ } else {
+ byte[] data = (byte[]) clazz.getMethod("getEmbeddedPicture").invoke(instance);
+ if (data != null) {
+ Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
+ if (bitmap != null) return bitmap;
+ }
+ return (Bitmap) clazz.getMethod("getFrameAtTime").invoke(instance);
+ }
+ } catch (IllegalArgumentException ex) {
+ // Assume this is a corrupt video file
+ } catch (RuntimeException ex) {
+ // Assume this is a corrupt video file.
+ } catch (InstantiationException e) {
+ Log.e(TAG, "createVideoThumbnail", e);
+ } catch (InvocationTargetException e) {
+ Log.e(TAG, "createVideoThumbnail", e);
+ } catch (ClassNotFoundException e) {
+ Log.e(TAG, "createVideoThumbnail", e);
+ } catch (NoSuchMethodException e) {
+ Log.e(TAG, "createVideoThumbnail", e);
+ } catch (IllegalAccessException e) {
+ Log.e(TAG, "createVideoThumbnail", e);
+ } finally {
+ try {
+ if (instance != null) {
+ clazz.getMethod("release").invoke(instance);
+ }
+ } catch (Exception ignored) {
+ }
+ }
+ return null;
+ }
+
+ public static byte[] compressToBytes(Bitmap bitmap) {
+ return compressToBytes(bitmap, DEFAULT_JPEG_QUALITY);
+ }
+
+ public static byte[] compressToBytes(Bitmap bitmap, int quality) {
+ ByteArrayOutputStream baos = new ByteArrayOutputStream(65536);
+ bitmap.compress(CompressFormat.JPEG, quality, baos);
+ return baos.toByteArray();
+ }
+
+ public static boolean isSupportedByRegionDecoder(String mimeType) {
+ if (mimeType == null) return false;
+ mimeType = mimeType.toLowerCase();
+ return mimeType.startsWith("image/") &&
+ (!mimeType.equals("image/gif") && !mimeType.endsWith("bmp"));
+ }
+
+ public static boolean isRotationSupported(String mimeType) {
+ if (mimeType == null) return false;
+ mimeType = mimeType.toLowerCase();
+ return mimeType.equals("image/jpeg");
+ }
+}
diff --git a/src/com/android/gallery3d/common/Utils.java b/src/com/android/gallery3d/common/Utils.java
new file mode 100644
index 0000000..614a081
--- /dev/null
+++ b/src/com/android/gallery3d/common/Utils.java
@@ -0,0 +1,340 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.common;
+
+import android.content.Context;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.database.Cursor;
+import android.os.Build;
+import android.os.ParcelFileDescriptor;
+import android.text.TextUtils;
+import android.util.Log;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.io.InterruptedIOException;
+
+public class Utils {
+ private static final String TAG = "Utils";
+ private static final String DEBUG_TAG = "GalleryDebug";
+
+ private static final long POLY64REV = 0x95AC9329AC4BC9B5L;
+ private static final long INITIALCRC = 0xFFFFFFFFFFFFFFFFL;
+
+ private static long[] sCrcTable = new long[256];
+
+ private static final boolean IS_DEBUG_BUILD =
+ Build.TYPE.equals("eng") || Build.TYPE.equals("userdebug");
+
+ private static final String MASK_STRING = "********************************";
+
+ // Throws AssertionError if the input is false.
+ public static void assertTrue(boolean cond) {
+ if (!cond) {
+ throw new AssertionError();
+ }
+ }
+
+ // Throws AssertionError with the message. We had a method having the form
+ // assertTrue(boolean cond, String message, Object ... args);
+ // However a call to that method will cause memory allocation even if the
+ // condition is false (due to autoboxing generated by "Object ... args"),
+ // so we don't use that anymore.
+ public static void fail(String message, Object ... args) {
+ throw new AssertionError(
+ args.length == 0 ? message : String.format(message, args));
+ }
+
+ // Throws NullPointerException if the input is null.
+ public static <T> T checkNotNull(T object) {
+ if (object == null) throw new NullPointerException();
+ return object;
+ }
+
+ // Returns true if two input Object are both null or equal
+ // to each other.
+ public static boolean equals(Object a, Object b) {
+ return (a == b) || (a == null ? false : a.equals(b));
+ }
+
+ // Returns the next power of two.
+ // Returns the input if it is already power of 2.
+ // Throws IllegalArgumentException if the input is <= 0 or
+ // the answer overflows.
+ public static int nextPowerOf2(int n) {
+ if (n <= 0 || n > (1 << 30)) throw new IllegalArgumentException("n is invalid: " + n);
+ n -= 1;
+ n |= n >> 16;
+ n |= n >> 8;
+ n |= n >> 4;
+ n |= n >> 2;
+ n |= n >> 1;
+ return n + 1;
+ }
+
+ // Returns the previous power of two.
+ // Returns the input if it is already power of 2.
+ // Throws IllegalArgumentException if the input is <= 0
+ public static int prevPowerOf2(int n) {
+ if (n <= 0) throw new IllegalArgumentException();
+ return Integer.highestOneBit(n);
+ }
+
+ // Returns the input value x clamped to the range [min, max].
+ public static int clamp(int x, int min, int max) {
+ if (x > max) return max;
+ if (x < min) return min;
+ return x;
+ }
+
+ // Returns the input value x clamped to the range [min, max].
+ public static float clamp(float x, float min, float max) {
+ if (x > max) return max;
+ if (x < min) return min;
+ return x;
+ }
+
+ // Returns the input value x clamped to the range [min, max].
+ public static long clamp(long x, long min, long max) {
+ if (x > max) return max;
+ if (x < min) return min;
+ return x;
+ }
+
+ public static boolean isOpaque(int color) {
+ return color >>> 24 == 0xFF;
+ }
+
+ public static void swap(int[] array, int i, int j) {
+ int temp = array[i];
+ array[i] = array[j];
+ array[j] = temp;
+ }
+
+ /**
+ * A function thats returns a 64-bit crc for string
+ *
+ * @param in input string
+ * @return a 64-bit crc value
+ */
+ public static final long crc64Long(String in) {
+ if (in == null || in.length() == 0) {
+ return 0;
+ }
+ return crc64Long(getBytes(in));
+ }
+
+ static {
+ // http://bioinf.cs.ucl.ac.uk/downloads/crc64/crc64.c
+ long part;
+ for (int i = 0; i < 256; i++) {
+ part = i;
+ for (int j = 0; j < 8; j++) {
+ long x = ((int) part & 1) != 0 ? POLY64REV : 0;
+ part = (part >> 1) ^ x;
+ }
+ sCrcTable[i] = part;
+ }
+ }
+
+ public static final long crc64Long(byte[] buffer) {
+ long crc = INITIALCRC;
+ for (int k = 0, n = buffer.length; k < n; ++k) {
+ crc = sCrcTable[(((int) crc) ^ buffer[k]) & 0xff] ^ (crc >> 8);
+ }
+ return crc;
+ }
+
+ public static byte[] getBytes(String in) {
+ byte[] result = new byte[in.length() * 2];
+ int output = 0;
+ for (char ch : in.toCharArray()) {
+ result[output++] = (byte) (ch & 0xFF);
+ result[output++] = (byte) (ch >> 8);
+ }
+ return result;
+ }
+
+ public static void closeSilently(Closeable c) {
+ if (c == null) return;
+ try {
+ c.close();
+ } catch (IOException t) {
+ Log.w(TAG, "close fail ", t);
+ }
+ }
+
+ public static int compare(long a, long b) {
+ return a < b ? -1 : a == b ? 0 : 1;
+ }
+
+ public static int ceilLog2(float value) {
+ int i;
+ for (i = 0; i < 31; i++) {
+ if ((1 << i) >= value) break;
+ }
+ return i;
+ }
+
+ public static int floorLog2(float value) {
+ int i;
+ for (i = 0; i < 31; i++) {
+ if ((1 << i) > value) break;
+ }
+ return i - 1;
+ }
+
+ public static void closeSilently(ParcelFileDescriptor fd) {
+ try {
+ if (fd != null) fd.close();
+ } catch (Throwable t) {
+ Log.w(TAG, "fail to close", t);
+ }
+ }
+
+ public static void closeSilently(Cursor cursor) {
+ try {
+ if (cursor != null) cursor.close();
+ } catch (Throwable t) {
+ Log.w(TAG, "fail to close", t);
+ }
+ }
+
+ public static float interpolateAngle(
+ float source, float target, float progress) {
+ // interpolate the angle from source to target
+ // We make the difference in the range of [-179, 180], this is the
+ // shortest path to change source to target.
+ float diff = target - source;
+ if (diff < 0) diff += 360f;
+ if (diff > 180) diff -= 360f;
+
+ float result = source + diff * progress;
+ return result < 0 ? result + 360f : result;
+ }
+
+ public static float interpolateScale(
+ float source, float target, float progress) {
+ return source + progress * (target - source);
+ }
+
+ public static String ensureNotNull(String value) {
+ return value == null ? "" : value;
+ }
+
+ public static float parseFloatSafely(String content, float defaultValue) {
+ if (content == null) return defaultValue;
+ try {
+ return Float.parseFloat(content);
+ } catch (NumberFormatException e) {
+ return defaultValue;
+ }
+ }
+
+ public static int parseIntSafely(String content, int defaultValue) {
+ if (content == null) return defaultValue;
+ try {
+ return Integer.parseInt(content);
+ } catch (NumberFormatException e) {
+ return defaultValue;
+ }
+ }
+
+ public static boolean isNullOrEmpty(String exifMake) {
+ return TextUtils.isEmpty(exifMake);
+ }
+
+ public static void waitWithoutInterrupt(Object object) {
+ try {
+ object.wait();
+ } catch (InterruptedException e) {
+ Log.w(TAG, "unexpected interrupt: " + object);
+ }
+ }
+
+ public static boolean handleInterrruptedException(Throwable e) {
+ // A helper to deal with the interrupt exception
+ // If an interrupt detected, we will setup the bit again.
+ if (e instanceof InterruptedIOException
+ || e instanceof InterruptedException) {
+ Thread.currentThread().interrupt();
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * @return String with special XML characters escaped.
+ */
+ public static String escapeXml(String s) {
+ StringBuilder sb = new StringBuilder();
+ for (int i = 0, len = s.length(); i < len; ++i) {
+ char c = s.charAt(i);
+ switch (c) {
+ case '<': sb.append("<"); break;
+ case '>': sb.append(">"); break;
+ case '\"': sb.append("""); break;
+ case '\'': sb.append("'"); break;
+ case '&': sb.append("&"); break;
+ default: sb.append(c);
+ }
+ }
+ return sb.toString();
+ }
+
+ public static String getUserAgent(Context context) {
+ PackageInfo packageInfo;
+ try {
+ packageInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
+ } catch (NameNotFoundException e) {
+ throw new IllegalStateException("getPackageInfo failed");
+ }
+ return String.format("%s/%s; %s/%s/%s/%s; %s/%s/%s",
+ packageInfo.packageName,
+ packageInfo.versionName,
+ Build.BRAND,
+ Build.DEVICE,
+ Build.MODEL,
+ Build.ID,
+ Build.VERSION.SDK_INT,
+ Build.VERSION.RELEASE,
+ Build.VERSION.INCREMENTAL);
+ }
+
+ public static String[] copyOf(String[] source, int newSize) {
+ String[] result = new String[newSize];
+ newSize = Math.min(source.length, newSize);
+ System.arraycopy(source, 0, result, 0, newSize);
+ return result;
+ }
+
+ // Mask information for debugging only. It returns <code>info.toString()</code> directly
+ // for debugging build (i.e., 'eng' and 'userdebug') and returns a mask ("****")
+ // in release build to protect the information (e.g. for privacy issue).
+ public static String maskDebugInfo(Object info) {
+ if (info == null) return null;
+ String s = info.toString();
+ int length = Math.min(s.length(), MASK_STRING.length());
+ return IS_DEBUG_BUILD ? s : MASK_STRING.substring(0, length);
+ }
+
+ // This method should be ONLY used for debugging.
+ public static void debug(String message, Object ... args) {
+ Log.v(DEBUG_TAG, String.format(message, args));
+ }
+}
diff --git a/src/com/android/gallery3d/exif/ByteBufferInputStream.java b/src/com/android/gallery3d/exif/ByteBufferInputStream.java
new file mode 100644
index 0000000..7fb9f22
--- /dev/null
+++ b/src/com/android/gallery3d/exif/ByteBufferInputStream.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+
+class ByteBufferInputStream extends InputStream {
+
+ private ByteBuffer mBuf;
+
+ public ByteBufferInputStream(ByteBuffer buf) {
+ mBuf = buf;
+ }
+
+ @Override
+ public int read() {
+ if (!mBuf.hasRemaining()) {
+ return -1;
+ }
+ return mBuf.get() & 0xFF;
+ }
+
+ @Override
+ public int read(byte[] bytes, int off, int len) {
+ if (!mBuf.hasRemaining()) {
+ return -1;
+ }
+
+ len = Math.min(len, mBuf.remaining());
+ mBuf.get(bytes, off, len);
+ return len;
+ }
+}
diff --git a/src/com/android/gallery3d/exif/CountedDataInputStream.java b/src/com/android/gallery3d/exif/CountedDataInputStream.java
new file mode 100644
index 0000000..dfd4a1a
--- /dev/null
+++ b/src/com/android/gallery3d/exif/CountedDataInputStream.java
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+import java.io.EOFException;
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.charset.Charset;
+
+class CountedDataInputStream extends FilterInputStream {
+
+ private int mCount = 0;
+
+ // allocate a byte buffer for a long value;
+ private final byte mByteArray[] = new byte[8];
+ private final ByteBuffer mByteBuffer = ByteBuffer.wrap(mByteArray);
+
+ protected CountedDataInputStream(InputStream in) {
+ super(in);
+ }
+
+ public int getReadByteCount() {
+ return mCount;
+ }
+
+ @Override
+ public int read(byte[] b) throws IOException {
+ int r = in.read(b);
+ mCount += (r >= 0) ? r : 0;
+ return r;
+ }
+
+ @Override
+ public int read(byte[] b, int off, int len) throws IOException {
+ int r = in.read(b, off, len);
+ mCount += (r >= 0) ? r : 0;
+ return r;
+ }
+
+ @Override
+ public int read() throws IOException {
+ int r = in.read();
+ mCount += (r >= 0) ? 1 : 0;
+ return r;
+ }
+
+ @Override
+ public long skip(long length) throws IOException {
+ long skip = in.skip(length);
+ mCount += skip;
+ return skip;
+ }
+
+ public void skipOrThrow(long length) throws IOException {
+ if (skip(length) != length) throw new EOFException();
+ }
+
+ public void skipTo(long target) throws IOException {
+ long cur = mCount;
+ long diff = target - cur;
+ assert(diff >= 0);
+ skipOrThrow(diff);
+ }
+
+ public void readOrThrow(byte[] b, int off, int len) throws IOException {
+ int r = read(b, off, len);
+ if (r != len) throw new EOFException();
+ }
+
+ public void readOrThrow(byte[] b) throws IOException {
+ readOrThrow(b, 0, b.length);
+ }
+
+ public void setByteOrder(ByteOrder order) {
+ mByteBuffer.order(order);
+ }
+
+ public ByteOrder getByteOrder() {
+ return mByteBuffer.order();
+ }
+
+ public short readShort() throws IOException {
+ readOrThrow(mByteArray, 0 ,2);
+ mByteBuffer.rewind();
+ return mByteBuffer.getShort();
+ }
+
+ public int readUnsignedShort() throws IOException {
+ return readShort() & 0xffff;
+ }
+
+ public int readInt() throws IOException {
+ readOrThrow(mByteArray, 0 , 4);
+ mByteBuffer.rewind();
+ return mByteBuffer.getInt();
+ }
+
+ public long readUnsignedInt() throws IOException {
+ return readInt() & 0xffffffffL;
+ }
+
+ public long readLong() throws IOException {
+ readOrThrow(mByteArray, 0 , 8);
+ mByteBuffer.rewind();
+ return mByteBuffer.getLong();
+ }
+
+ public String readString(int n) throws IOException {
+ byte buf[] = new byte[n];
+ readOrThrow(buf);
+ return new String(buf, "UTF8");
+ }
+
+ public String readString(int n, Charset charset) throws IOException {
+ byte buf[] = new byte[n];
+ readOrThrow(buf);
+ return new String(buf, charset);
+ }
+}
\ No newline at end of file
diff --git a/src/com/android/gallery3d/exif/ExifData.java b/src/com/android/gallery3d/exif/ExifData.java
new file mode 100644
index 0000000..8422382
--- /dev/null
+++ b/src/com/android/gallery3d/exif/ExifData.java
@@ -0,0 +1,348 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+import android.util.Log;
+
+import java.io.UnsupportedEncodingException;
+import java.nio.ByteOrder;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * This class stores the EXIF header in IFDs according to the JPEG
+ * specification. It is the result produced by {@link ExifReader}.
+ *
+ * @see ExifReader
+ * @see IfdData
+ */
+class ExifData {
+ private static final String TAG = "ExifData";
+ private static final byte[] USER_COMMENT_ASCII = {
+ 0x41, 0x53, 0x43, 0x49, 0x49, 0x00, 0x00, 0x00
+ };
+ private static final byte[] USER_COMMENT_JIS = {
+ 0x4A, 0x49, 0x53, 0x00, 0x00, 0x00, 0x00, 0x00
+ };
+ private static final byte[] USER_COMMENT_UNICODE = {
+ 0x55, 0x4E, 0x49, 0x43, 0x4F, 0x44, 0x45, 0x00
+ };
+
+ private final IfdData[] mIfdDatas = new IfdData[IfdId.TYPE_IFD_COUNT];
+ private byte[] mThumbnail;
+ private ArrayList<byte[]> mStripBytes = new ArrayList<byte[]>();
+ private final ByteOrder mByteOrder;
+
+ ExifData(ByteOrder order) {
+ mByteOrder = order;
+ }
+
+ /**
+ * Gets the compressed thumbnail. Returns null if there is no compressed
+ * thumbnail.
+ *
+ * @see #hasCompressedThumbnail()
+ */
+ protected byte[] getCompressedThumbnail() {
+ return mThumbnail;
+ }
+
+ /**
+ * Sets the compressed thumbnail.
+ */
+ protected void setCompressedThumbnail(byte[] thumbnail) {
+ mThumbnail = thumbnail;
+ }
+
+ /**
+ * Returns true it this header contains a compressed thumbnail.
+ */
+ protected boolean hasCompressedThumbnail() {
+ return mThumbnail != null;
+ }
+
+ /**
+ * Adds an uncompressed strip.
+ */
+ protected void setStripBytes(int index, byte[] strip) {
+ if (index < mStripBytes.size()) {
+ mStripBytes.set(index, strip);
+ } else {
+ for (int i = mStripBytes.size(); i < index; i++) {
+ mStripBytes.add(null);
+ }
+ mStripBytes.add(strip);
+ }
+ }
+
+ /**
+ * Gets the strip count.
+ */
+ protected int getStripCount() {
+ return mStripBytes.size();
+ }
+
+ /**
+ * Gets the strip at the specified index.
+ *
+ * @exceptions #IndexOutOfBoundException
+ */
+ protected byte[] getStrip(int index) {
+ return mStripBytes.get(index);
+ }
+
+ /**
+ * Returns true if this header contains uncompressed strip.
+ */
+ protected boolean hasUncompressedStrip() {
+ return mStripBytes.size() != 0;
+ }
+
+ /**
+ * Gets the byte order.
+ */
+ protected ByteOrder getByteOrder() {
+ return mByteOrder;
+ }
+
+ /**
+ * Returns the {@link IfdData} object corresponding to a given IFD if it
+ * exists or null.
+ */
+ protected IfdData getIfdData(int ifdId) {
+ if (ExifTag.isValidIfd(ifdId)) {
+ return mIfdDatas[ifdId];
+ }
+ return null;
+ }
+
+ /**
+ * Adds IFD data. If IFD data of the same type already exists, it will be
+ * replaced by the new data.
+ */
+ protected void addIfdData(IfdData data) {
+ mIfdDatas[data.getId()] = data;
+ }
+
+ /**
+ * Returns the {@link IfdData} object corresponding to a given IFD or
+ * generates one if none exist.
+ */
+ protected IfdData getOrCreateIfdData(int ifdId) {
+ IfdData ifdData = mIfdDatas[ifdId];
+ if (ifdData == null) {
+ ifdData = new IfdData(ifdId);
+ mIfdDatas[ifdId] = ifdData;
+ }
+ return ifdData;
+ }
+
+ /**
+ * Returns the tag with a given TID in the given IFD if the tag exists.
+ * Otherwise returns null.
+ */
+ protected ExifTag getTag(short tag, int ifd) {
+ IfdData ifdData = mIfdDatas[ifd];
+ return (ifdData == null) ? null : ifdData.getTag(tag);
+ }
+
+ /**
+ * Adds the given ExifTag to its default IFD and returns an existing ExifTag
+ * with the same TID or null if none exist.
+ */
+ protected ExifTag addTag(ExifTag tag) {
+ if (tag != null) {
+ int ifd = tag.getIfd();
+ return addTag(tag, ifd);
+ }
+ return null;
+ }
+
+ /**
+ * Adds the given ExifTag to the given IFD and returns an existing ExifTag
+ * with the same TID or null if none exist.
+ */
+ protected ExifTag addTag(ExifTag tag, int ifdId) {
+ if (tag != null && ExifTag.isValidIfd(ifdId)) {
+ IfdData ifdData = getOrCreateIfdData(ifdId);
+ return ifdData.setTag(tag);
+ }
+ return null;
+ }
+
+ protected void clearThumbnailAndStrips() {
+ mThumbnail = null;
+ mStripBytes.clear();
+ }
+
+ /**
+ * Removes the thumbnail and its related tags. IFD1 will be removed.
+ */
+ protected void removeThumbnailData() {
+ clearThumbnailAndStrips();
+ mIfdDatas[IfdId.TYPE_IFD_1] = null;
+ }
+
+ /**
+ * Removes the tag with a given TID and IFD.
+ */
+ protected void removeTag(short tagId, int ifdId) {
+ IfdData ifdData = mIfdDatas[ifdId];
+ if (ifdData == null) {
+ return;
+ }
+ ifdData.removeTag(tagId);
+ }
+
+ /**
+ * Decodes the user comment tag into string as specified in the EXIF
+ * standard. Returns null if decoding failed.
+ */
+ protected String getUserComment() {
+ IfdData ifdData = mIfdDatas[IfdId.TYPE_IFD_0];
+ if (ifdData == null) {
+ return null;
+ }
+ ExifTag tag = ifdData.getTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_USER_COMMENT));
+ if (tag == null) {
+ return null;
+ }
+ if (tag.getComponentCount() < 8) {
+ return null;
+ }
+
+ byte[] buf = new byte[tag.getComponentCount()];
+ tag.getBytes(buf);
+
+ byte[] code = new byte[8];
+ System.arraycopy(buf, 0, code, 0, 8);
+
+ try {
+ if (Arrays.equals(code, USER_COMMENT_ASCII)) {
+ return new String(buf, 8, buf.length - 8, "US-ASCII");
+ } else if (Arrays.equals(code, USER_COMMENT_JIS)) {
+ return new String(buf, 8, buf.length - 8, "EUC-JP");
+ } else if (Arrays.equals(code, USER_COMMENT_UNICODE)) {
+ return new String(buf, 8, buf.length - 8, "UTF-16");
+ } else {
+ return null;
+ }
+ } catch (UnsupportedEncodingException e) {
+ Log.w(TAG, "Failed to decode the user comment");
+ return null;
+ }
+ }
+
+ /**
+ * Returns a list of all {@link ExifTag}s in the ExifData or null if there
+ * are none.
+ */
+ protected List<ExifTag> getAllTags() {
+ ArrayList<ExifTag> ret = new ArrayList<ExifTag>();
+ for (IfdData d : mIfdDatas) {
+ if (d != null) {
+ ExifTag[] tags = d.getAllTags();
+ if (tags != null) {
+ for (ExifTag t : tags) {
+ ret.add(t);
+ }
+ }
+ }
+ }
+ if (ret.size() == 0) {
+ return null;
+ }
+ return ret;
+ }
+
+ /**
+ * Returns a list of all {@link ExifTag}s in a given IFD or null if there
+ * are none.
+ */
+ protected List<ExifTag> getAllTagsForIfd(int ifd) {
+ IfdData d = mIfdDatas[ifd];
+ if (d == null) {
+ return null;
+ }
+ ExifTag[] tags = d.getAllTags();
+ if (tags == null) {
+ return null;
+ }
+ ArrayList<ExifTag> ret = new ArrayList<ExifTag>(tags.length);
+ for (ExifTag t : tags) {
+ ret.add(t);
+ }
+ if (ret.size() == 0) {
+ return null;
+ }
+ return ret;
+ }
+
+ /**
+ * Returns a list of all {@link ExifTag}s with a given TID or null if there
+ * are none.
+ */
+ protected List<ExifTag> getAllTagsForTagId(short tag) {
+ ArrayList<ExifTag> ret = new ArrayList<ExifTag>();
+ for (IfdData d : mIfdDatas) {
+ if (d != null) {
+ ExifTag t = d.getTag(tag);
+ if (t != null) {
+ ret.add(t);
+ }
+ }
+ }
+ if (ret.size() == 0) {
+ return null;
+ }
+ return ret;
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+ if (obj == null) {
+ return false;
+ }
+ if (obj instanceof ExifData) {
+ ExifData data = (ExifData) obj;
+ if (data.mByteOrder != mByteOrder ||
+ data.mStripBytes.size() != mStripBytes.size() ||
+ !Arrays.equals(data.mThumbnail, mThumbnail)) {
+ return false;
+ }
+ for (int i = 0; i < mStripBytes.size(); i++) {
+ if (!Arrays.equals(data.mStripBytes.get(i), mStripBytes.get(i))) {
+ return false;
+ }
+ }
+ for (int i = 0; i < IfdId.TYPE_IFD_COUNT; i++) {
+ IfdData ifd1 = data.getIfdData(i);
+ IfdData ifd2 = getIfdData(i);
+ if (ifd1 != ifd2 && ifd1 != null && !ifd1.equals(ifd2)) {
+ return false;
+ }
+ }
+ return true;
+ }
+ return false;
+ }
+
+}
diff --git a/src/com/android/gallery3d/exif/ExifInterface.java b/src/com/android/gallery3d/exif/ExifInterface.java
new file mode 100644
index 0000000..a1cf0fc
--- /dev/null
+++ b/src/com/android/gallery3d/exif/ExifInterface.java
@@ -0,0 +1,2407 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.util.SparseIntArray;
+
+import java.io.BufferedInputStream;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.Closeable;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.RandomAccessFile;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.channels.FileChannel.MapMode;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.List;
+import java.util.TimeZone;
+
+/**
+ * This class provides methods and constants for reading and writing jpeg file
+ * metadata. It contains a collection of ExifTags, and a collection of
+ * definitions for creating valid ExifTags. The collection of ExifTags can be
+ * updated by: reading new ones from a file, deleting or adding existing ones,
+ * or building new ExifTags from a tag definition. These ExifTags can be written
+ * to a valid jpeg image as exif metadata.
+ * <p>
+ * Each ExifTag has a tag ID (TID) and is stored in a specific image file
+ * directory (IFD) as specified by the exif standard. A tag definition can be
+ * looked up with a constant that is a combination of TID and IFD. This
+ * definition has information about the type, number of components, and valid
+ * IFDs for a tag.
+ *
+ * @see ExifTag
+ */
+public class ExifInterface {
+ public static final int TAG_NULL = -1;
+ public static final int IFD_NULL = -1;
+ public static final int DEFINITION_NULL = 0;
+
+ /**
+ * Tag constants for Jeita EXIF 2.2
+ */
+
+ // IFD 0
+ public static final int TAG_IMAGE_WIDTH =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0100);
+ public static final int TAG_IMAGE_LENGTH =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0101); // Image height
+ public static final int TAG_BITS_PER_SAMPLE =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0102);
+ public static final int TAG_COMPRESSION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0103);
+ public static final int TAG_PHOTOMETRIC_INTERPRETATION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0106);
+ public static final int TAG_IMAGE_DESCRIPTION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x010E);
+ public static final int TAG_MAKE =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x010F);
+ public static final int TAG_MODEL =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0110);
+ public static final int TAG_STRIP_OFFSETS =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0111);
+ public static final int TAG_ORIENTATION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0112);
+ public static final int TAG_SAMPLES_PER_PIXEL =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0115);
+ public static final int TAG_ROWS_PER_STRIP =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0116);
+ public static final int TAG_STRIP_BYTE_COUNTS =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0117);
+ public static final int TAG_X_RESOLUTION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x011A);
+ public static final int TAG_Y_RESOLUTION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x011B);
+ public static final int TAG_PLANAR_CONFIGURATION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x011C);
+ public static final int TAG_RESOLUTION_UNIT =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0128);
+ public static final int TAG_TRANSFER_FUNCTION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x012D);
+ public static final int TAG_SOFTWARE =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0131);
+ public static final int TAG_DATE_TIME =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0132);
+ public static final int TAG_ARTIST =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x013B);
+ public static final int TAG_WHITE_POINT =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x013E);
+ public static final int TAG_PRIMARY_CHROMATICITIES =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x013F);
+ public static final int TAG_Y_CB_CR_COEFFICIENTS =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0211);
+ public static final int TAG_Y_CB_CR_SUB_SAMPLING =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0212);
+ public static final int TAG_Y_CB_CR_POSITIONING =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0213);
+ public static final int TAG_REFERENCE_BLACK_WHITE =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0214);
+ public static final int TAG_COPYRIGHT =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x8298);
+ public static final int TAG_EXIF_IFD =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x8769);
+ public static final int TAG_GPS_IFD =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x8825);
+ // IFD 1
+ public static final int TAG_JPEG_INTERCHANGE_FORMAT =
+ defineTag(IfdId.TYPE_IFD_1, (short) 0x0201);
+ public static final int TAG_JPEG_INTERCHANGE_FORMAT_LENGTH =
+ defineTag(IfdId.TYPE_IFD_1, (short) 0x0202);
+ // IFD Exif Tags
+ public static final int TAG_EXPOSURE_TIME =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x829A);
+ public static final int TAG_F_NUMBER =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x829D);
+ public static final int TAG_EXPOSURE_PROGRAM =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x8822);
+ public static final int TAG_SPECTRAL_SENSITIVITY =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x8824);
+ public static final int TAG_ISO_SPEED_RATINGS =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x8827);
+ public static final int TAG_OECF =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x8828);
+ public static final int TAG_EXIF_VERSION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9000);
+ public static final int TAG_DATE_TIME_ORIGINAL =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9003);
+ public static final int TAG_DATE_TIME_DIGITIZED =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9004);
+ public static final int TAG_COMPONENTS_CONFIGURATION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9101);
+ public static final int TAG_COMPRESSED_BITS_PER_PIXEL =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9102);
+ public static final int TAG_SHUTTER_SPEED_VALUE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9201);
+ public static final int TAG_APERTURE_VALUE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9202);
+ public static final int TAG_BRIGHTNESS_VALUE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9203);
+ public static final int TAG_EXPOSURE_BIAS_VALUE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9204);
+ public static final int TAG_MAX_APERTURE_VALUE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9205);
+ public static final int TAG_SUBJECT_DISTANCE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9206);
+ public static final int TAG_METERING_MODE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9207);
+ public static final int TAG_LIGHT_SOURCE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9208);
+ public static final int TAG_FLASH =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9209);
+ public static final int TAG_FOCAL_LENGTH =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x920A);
+ public static final int TAG_SUBJECT_AREA =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9214);
+ public static final int TAG_MAKER_NOTE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x927C);
+ public static final int TAG_USER_COMMENT =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9286);
+ public static final int TAG_SUB_SEC_TIME =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9290);
+ public static final int TAG_SUB_SEC_TIME_ORIGINAL =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9291);
+ public static final int TAG_SUB_SEC_TIME_DIGITIZED =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9292);
+ public static final int TAG_FLASHPIX_VERSION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA000);
+ public static final int TAG_COLOR_SPACE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA001);
+ public static final int TAG_PIXEL_X_DIMENSION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA002);
+ public static final int TAG_PIXEL_Y_DIMENSION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA003);
+ public static final int TAG_RELATED_SOUND_FILE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA004);
+ public static final int TAG_INTEROPERABILITY_IFD =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA005);
+ public static final int TAG_FLASH_ENERGY =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA20B);
+ public static final int TAG_SPATIAL_FREQUENCY_RESPONSE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA20C);
+ public static final int TAG_FOCAL_PLANE_X_RESOLUTION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA20E);
+ public static final int TAG_FOCAL_PLANE_Y_RESOLUTION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA20F);
+ public static final int TAG_FOCAL_PLANE_RESOLUTION_UNIT =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA210);
+ public static final int TAG_SUBJECT_LOCATION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA214);
+ public static final int TAG_EXPOSURE_INDEX =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA215);
+ public static final int TAG_SENSING_METHOD =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA217);
+ public static final int TAG_FILE_SOURCE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA300);
+ public static final int TAG_SCENE_TYPE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA301);
+ public static final int TAG_CFA_PATTERN =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA302);
+ public static final int TAG_CUSTOM_RENDERED =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA401);
+ public static final int TAG_EXPOSURE_MODE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA402);
+ public static final int TAG_WHITE_BALANCE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA403);
+ public static final int TAG_DIGITAL_ZOOM_RATIO =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA404);
+ public static final int TAG_FOCAL_LENGTH_IN_35_MM_FILE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA405);
+ public static final int TAG_SCENE_CAPTURE_TYPE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA406);
+ public static final int TAG_GAIN_CONTROL =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA407);
+ public static final int TAG_CONTRAST =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA408);
+ public static final int TAG_SATURATION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA409);
+ public static final int TAG_SHARPNESS =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA40A);
+ public static final int TAG_DEVICE_SETTING_DESCRIPTION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA40B);
+ public static final int TAG_SUBJECT_DISTANCE_RANGE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA40C);
+ public static final int TAG_IMAGE_UNIQUE_ID =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA420);
+ // IFD GPS tags
+ public static final int TAG_GPS_VERSION_ID =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 0);
+ public static final int TAG_GPS_LATITUDE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 1);
+ public static final int TAG_GPS_LATITUDE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 2);
+ public static final int TAG_GPS_LONGITUDE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 3);
+ public static final int TAG_GPS_LONGITUDE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 4);
+ public static final int TAG_GPS_ALTITUDE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 5);
+ public static final int TAG_GPS_ALTITUDE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 6);
+ public static final int TAG_GPS_TIME_STAMP =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 7);
+ public static final int TAG_GPS_SATTELLITES =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 8);
+ public static final int TAG_GPS_STATUS =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 9);
+ public static final int TAG_GPS_MEASURE_MODE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 10);
+ public static final int TAG_GPS_DOP =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 11);
+ public static final int TAG_GPS_SPEED_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 12);
+ public static final int TAG_GPS_SPEED =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 13);
+ public static final int TAG_GPS_TRACK_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 14);
+ public static final int TAG_GPS_TRACK =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 15);
+ public static final int TAG_GPS_IMG_DIRECTION_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 16);
+ public static final int TAG_GPS_IMG_DIRECTION =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 17);
+ public static final int TAG_GPS_MAP_DATUM =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 18);
+ public static final int TAG_GPS_DEST_LATITUDE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 19);
+ public static final int TAG_GPS_DEST_LATITUDE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 20);
+ public static final int TAG_GPS_DEST_LONGITUDE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 21);
+ public static final int TAG_GPS_DEST_LONGITUDE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 22);
+ public static final int TAG_GPS_DEST_BEARING_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 23);
+ public static final int TAG_GPS_DEST_BEARING =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 24);
+ public static final int TAG_GPS_DEST_DISTANCE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 25);
+ public static final int TAG_GPS_DEST_DISTANCE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 26);
+ public static final int TAG_GPS_PROCESSING_METHOD =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 27);
+ public static final int TAG_GPS_AREA_INFORMATION =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 28);
+ public static final int TAG_GPS_DATE_STAMP =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 29);
+ public static final int TAG_GPS_DIFFERENTIAL =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 30);
+ // IFD Interoperability tags
+ public static final int TAG_INTEROPERABILITY_INDEX =
+ defineTag(IfdId.TYPE_IFD_INTEROPERABILITY, (short) 1);
+
+ /**
+ * Tags that contain offset markers. These are included in the banned
+ * defines.
+ */
+ private static HashSet<Short> sOffsetTags = new HashSet<Short>();
+ static {
+ sOffsetTags.add(getTrueTagKey(TAG_GPS_IFD));
+ sOffsetTags.add(getTrueTagKey(TAG_EXIF_IFD));
+ sOffsetTags.add(getTrueTagKey(TAG_JPEG_INTERCHANGE_FORMAT));
+ sOffsetTags.add(getTrueTagKey(TAG_INTEROPERABILITY_IFD));
+ sOffsetTags.add(getTrueTagKey(TAG_STRIP_OFFSETS));
+ }
+
+ /**
+ * Tags with definitions that cannot be overridden (banned defines).
+ */
+ protected static HashSet<Short> sBannedDefines = new HashSet<Short>(sOffsetTags);
+ static {
+ sBannedDefines.add(getTrueTagKey(TAG_NULL));
+ sBannedDefines.add(getTrueTagKey(TAG_JPEG_INTERCHANGE_FORMAT_LENGTH));
+ sBannedDefines.add(getTrueTagKey(TAG_STRIP_BYTE_COUNTS));
+ }
+
+ /**
+ * Returns the constant representing a tag with a given TID and default IFD.
+ */
+ public static int defineTag(int ifdId, short tagId) {
+ return (tagId & 0x0000ffff) | (ifdId << 16);
+ }
+
+ /**
+ * Returns the TID for a tag constant.
+ */
+ public static short getTrueTagKey(int tag) {
+ // Truncate
+ return (short) tag;
+ }
+
+ /**
+ * Returns the default IFD for a tag constant.
+ */
+ public static int getTrueIfd(int tag) {
+ return tag >>> 16;
+ }
+
+ /**
+ * Constants for {@link TAG_ORIENTATION}. They can be interpreted as
+ * follows:
+ * <ul>
+ * <li>TOP_LEFT is the normal orientation.</li>
+ * <li>TOP_RIGHT is a left-right mirror.</li>
+ * <li>BOTTOM_LEFT is a 180 degree rotation.</li>
+ * <li>BOTTOM_RIGHT is a top-bottom mirror.</li>
+ * <li>LEFT_TOP is mirrored about the top-left<->bottom-right axis.</li>
+ * <li>RIGHT_TOP is a 90 degree clockwise rotation.</li>
+ * <li>LEFT_BOTTOM is mirrored about the top-right<->bottom-left axis.</li>
+ * <li>RIGHT_BOTTOM is a 270 degree clockwise rotation.</li>
+ * </ul>
+ */
+ public static interface Orientation {
+ public static final short TOP_LEFT = 1;
+ public static final short TOP_RIGHT = 2;
+ public static final short BOTTOM_LEFT = 3;
+ public static final short BOTTOM_RIGHT = 4;
+ public static final short LEFT_TOP = 5;
+ public static final short RIGHT_TOP = 6;
+ public static final short LEFT_BOTTOM = 7;
+ public static final short RIGHT_BOTTOM = 8;
+ }
+
+ /**
+ * Constants for {@link TAG_Y_CB_CR_POSITIONING}
+ */
+ public static interface YCbCrPositioning {
+ public static final short CENTERED = 1;
+ public static final short CO_SITED = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_COMPRESSION}
+ */
+ public static interface Compression {
+ public static final short UNCOMPRESSION = 1;
+ public static final short JPEG = 6;
+ }
+
+ /**
+ * Constants for {@link TAG_RESOLUTION_UNIT}
+ */
+ public static interface ResolutionUnit {
+ public static final short INCHES = 2;
+ public static final short CENTIMETERS = 3;
+ }
+
+ /**
+ * Constants for {@link TAG_PHOTOMETRIC_INTERPRETATION}
+ */
+ public static interface PhotometricInterpretation {
+ public static final short RGB = 2;
+ public static final short YCBCR = 6;
+ }
+
+ /**
+ * Constants for {@link TAG_PLANAR_CONFIGURATION}
+ */
+ public static interface PlanarConfiguration {
+ public static final short CHUNKY = 1;
+ public static final short PLANAR = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_EXPOSURE_PROGRAM}
+ */
+ public static interface ExposureProgram {
+ public static final short NOT_DEFINED = 0;
+ public static final short MANUAL = 1;
+ public static final short NORMAL_PROGRAM = 2;
+ public static final short APERTURE_PRIORITY = 3;
+ public static final short SHUTTER_PRIORITY = 4;
+ public static final short CREATIVE_PROGRAM = 5;
+ public static final short ACTION_PROGRAM = 6;
+ public static final short PROTRAIT_MODE = 7;
+ public static final short LANDSCAPE_MODE = 8;
+ }
+
+ /**
+ * Constants for {@link TAG_METERING_MODE}
+ */
+ public static interface MeteringMode {
+ public static final short UNKNOWN = 0;
+ public static final short AVERAGE = 1;
+ public static final short CENTER_WEIGHTED_AVERAGE = 2;
+ public static final short SPOT = 3;
+ public static final short MULTISPOT = 4;
+ public static final short PATTERN = 5;
+ public static final short PARTAIL = 6;
+ public static final short OTHER = 255;
+ }
+
+ /**
+ * Constants for {@link TAG_FLASH} As the definition in Jeita EXIF 2.2
+ * standard, we can treat this constant as bitwise flag.
+ * <p>
+ * e.g.
+ * <p>
+ * short flash = FIRED | RETURN_STROBE_RETURN_LIGHT_DETECTED |
+ * MODE_AUTO_MODE
+ */
+ public static interface Flash {
+ // LSB
+ public static final short DID_NOT_FIRED = 0;
+ public static final short FIRED = 1;
+ // 1st~2nd bits
+ public static final short RETURN_NO_STROBE_RETURN_DETECTION_FUNCTION = 0 << 1;
+ public static final short RETURN_STROBE_RETURN_LIGHT_NOT_DETECTED = 2 << 1;
+ public static final short RETURN_STROBE_RETURN_LIGHT_DETECTED = 3 << 1;
+ // 3rd~4th bits
+ public static final short MODE_UNKNOWN = 0 << 3;
+ public static final short MODE_COMPULSORY_FLASH_FIRING = 1 << 3;
+ public static final short MODE_COMPULSORY_FLASH_SUPPRESSION = 2 << 3;
+ public static final short MODE_AUTO_MODE = 3 << 3;
+ // 5th bit
+ public static final short FUNCTION_PRESENT = 0 << 5;
+ public static final short FUNCTION_NO_FUNCTION = 1 << 5;
+ // 6th bit
+ public static final short RED_EYE_REDUCTION_NO_OR_UNKNOWN = 0 << 6;
+ public static final short RED_EYE_REDUCTION_SUPPORT = 1 << 6;
+ }
+
+ /**
+ * Constants for {@link TAG_COLOR_SPACE}
+ */
+ public static interface ColorSpace {
+ public static final short SRGB = 1;
+ public static final short UNCALIBRATED = (short) 0xFFFF;
+ }
+
+ /**
+ * Constants for {@link TAG_EXPOSURE_MODE}
+ */
+ public static interface ExposureMode {
+ public static final short AUTO_EXPOSURE = 0;
+ public static final short MANUAL_EXPOSURE = 1;
+ public static final short AUTO_BRACKET = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_WHITE_BALANCE}
+ */
+ public static interface WhiteBalance {
+ public static final short AUTO = 0;
+ public static final short MANUAL = 1;
+ }
+
+ /**
+ * Constants for {@link TAG_SCENE_CAPTURE_TYPE}
+ */
+ public static interface SceneCapture {
+ public static final short STANDARD = 0;
+ public static final short LANDSCAPE = 1;
+ public static final short PROTRAIT = 2;
+ public static final short NIGHT_SCENE = 3;
+ }
+
+ /**
+ * Constants for {@link TAG_COMPONENTS_CONFIGURATION}
+ */
+ public static interface ComponentsConfiguration {
+ public static final short NOT_EXIST = 0;
+ public static final short Y = 1;
+ public static final short CB = 2;
+ public static final short CR = 3;
+ public static final short R = 4;
+ public static final short G = 5;
+ public static final short B = 6;
+ }
+
+ /**
+ * Constants for {@link TAG_LIGHT_SOURCE}
+ */
+ public static interface LightSource {
+ public static final short UNKNOWN = 0;
+ public static final short DAYLIGHT = 1;
+ public static final short FLUORESCENT = 2;
+ public static final short TUNGSTEN = 3;
+ public static final short FLASH = 4;
+ public static final short FINE_WEATHER = 9;
+ public static final short CLOUDY_WEATHER = 10;
+ public static final short SHADE = 11;
+ public static final short DAYLIGHT_FLUORESCENT = 12;
+ public static final short DAY_WHITE_FLUORESCENT = 13;
+ public static final short COOL_WHITE_FLUORESCENT = 14;
+ public static final short WHITE_FLUORESCENT = 15;
+ public static final short STANDARD_LIGHT_A = 17;
+ public static final short STANDARD_LIGHT_B = 18;
+ public static final short STANDARD_LIGHT_C = 19;
+ public static final short D55 = 20;
+ public static final short D65 = 21;
+ public static final short D75 = 22;
+ public static final short D50 = 23;
+ public static final short ISO_STUDIO_TUNGSTEN = 24;
+ public static final short OTHER = 255;
+ }
+
+ /**
+ * Constants for {@link TAG_SENSING_METHOD}
+ */
+ public static interface SensingMethod {
+ public static final short NOT_DEFINED = 1;
+ public static final short ONE_CHIP_COLOR = 2;
+ public static final short TWO_CHIP_COLOR = 3;
+ public static final short THREE_CHIP_COLOR = 4;
+ public static final short COLOR_SEQUENTIAL_AREA = 5;
+ public static final short TRILINEAR = 7;
+ public static final short COLOR_SEQUENTIAL_LINEAR = 8;
+ }
+
+ /**
+ * Constants for {@link TAG_FILE_SOURCE}
+ */
+ public static interface FileSource {
+ public static final short DSC = 3;
+ }
+
+ /**
+ * Constants for {@link TAG_SCENE_TYPE}
+ */
+ public static interface SceneType {
+ public static final short DIRECT_PHOTOGRAPHED = 1;
+ }
+
+ /**
+ * Constants for {@link TAG_GAIN_CONTROL}
+ */
+ public static interface GainControl {
+ public static final short NONE = 0;
+ public static final short LOW_UP = 1;
+ public static final short HIGH_UP = 2;
+ public static final short LOW_DOWN = 3;
+ public static final short HIGH_DOWN = 4;
+ }
+
+ /**
+ * Constants for {@link TAG_CONTRAST}
+ */
+ public static interface Contrast {
+ public static final short NORMAL = 0;
+ public static final short SOFT = 1;
+ public static final short HARD = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_SATURATION}
+ */
+ public static interface Saturation {
+ public static final short NORMAL = 0;
+ public static final short LOW = 1;
+ public static final short HIGH = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_SHARPNESS}
+ */
+ public static interface Sharpness {
+ public static final short NORMAL = 0;
+ public static final short SOFT = 1;
+ public static final short HARD = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_SUBJECT_DISTANCE}
+ */
+ public static interface SubjectDistance {
+ public static final short UNKNOWN = 0;
+ public static final short MACRO = 1;
+ public static final short CLOSE_VIEW = 2;
+ public static final short DISTANT_VIEW = 3;
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_LATITUDE_REF},
+ * {@link TAG_GPS_DEST_LATITUDE_REF}
+ */
+ public static interface GpsLatitudeRef {
+ public static final String NORTH = "N";
+ public static final String SOUTH = "S";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_LONGITUDE_REF},
+ * {@link TAG_GPS_DEST_LONGITUDE_REF}
+ */
+ public static interface GpsLongitudeRef {
+ public static final String EAST = "E";
+ public static final String WEST = "W";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_ALTITUDE_REF}
+ */
+ public static interface GpsAltitudeRef {
+ public static final short SEA_LEVEL = 0;
+ public static final short SEA_LEVEL_NEGATIVE = 1;
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_STATUS}
+ */
+ public static interface GpsStatus {
+ public static final String IN_PROGRESS = "A";
+ public static final String INTEROPERABILITY = "V";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_MEASURE_MODE}
+ */
+ public static interface GpsMeasureMode {
+ public static final String MODE_2_DIMENSIONAL = "2";
+ public static final String MODE_3_DIMENSIONAL = "3";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_SPEED_REF},
+ * {@link TAG_GPS_DEST_DISTANCE_REF}
+ */
+ public static interface GpsSpeedRef {
+ public static final String KILOMETERS = "K";
+ public static final String MILES = "M";
+ public static final String KNOTS = "N";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_TRACK_REF},
+ * {@link TAG_GPS_IMG_DIRECTION_REF}, {@link TAG_GPS_DEST_BEARING_REF}
+ */
+ public static interface GpsTrackRef {
+ public static final String TRUE_DIRECTION = "T";
+ public static final String MAGNETIC_DIRECTION = "M";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_DIFFERENTIAL}
+ */
+ public static interface GpsDifferential {
+ public static final short WITHOUT_DIFFERENTIAL_CORRECTION = 0;
+ public static final short DIFFERENTIAL_CORRECTION_APPLIED = 1;
+ }
+
+ private static final String NULL_ARGUMENT_STRING = "Argument is null";
+ private ExifData mData = new ExifData(DEFAULT_BYTE_ORDER);
+ public static final ByteOrder DEFAULT_BYTE_ORDER = ByteOrder.BIG_ENDIAN;
+
+ public ExifInterface() {
+ mGPSDateStampFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
+ }
+
+ /**
+ * Reads the exif tags from a byte array, clearing this ExifInterface
+ * object's existing exif tags.
+ *
+ * @param jpeg a byte array containing a jpeg compressed image.
+ * @throws IOException
+ */
+ public void readExif(byte[] jpeg) throws IOException {
+ readExif(new ByteArrayInputStream(jpeg));
+ }
+
+ /**
+ * Reads the exif tags from an InputStream, clearing this ExifInterface
+ * object's existing exif tags.
+ *
+ * @param inStream an InputStream containing a jpeg compressed image.
+ * @throws IOException
+ */
+ public void readExif(InputStream inStream) throws IOException {
+ if (inStream == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ ExifData d = null;
+ try {
+ d = new ExifReader(this).read(inStream);
+ } catch (ExifInvalidFormatException e) {
+ throw new IOException("Invalid exif format : " + e);
+ }
+ mData = d;
+ }
+
+ /**
+ * Reads the exif tags from a file, clearing this ExifInterface object's
+ * existing exif tags.
+ *
+ * @param inFileName a string representing the filepath to jpeg file.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public void readExif(String inFileName) throws FileNotFoundException, IOException {
+ if (inFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ InputStream is = null;
+ try {
+ is = (InputStream) new BufferedInputStream(new FileInputStream(inFileName));
+ readExif(is);
+ } catch (IOException e) {
+ closeSilently(is);
+ throw e;
+ }
+ is.close();
+ }
+
+ /**
+ * Sets the exif tags, clearing this ExifInterface object's existing exif
+ * tags.
+ *
+ * @param tags a collection of exif tags to set.
+ */
+ public void setExif(Collection<ExifTag> tags) {
+ clearExif();
+ setTags(tags);
+ }
+
+ /**
+ * Clears this ExifInterface object's existing exif tags.
+ */
+ public void clearExif() {
+ mData = new ExifData(DEFAULT_BYTE_ORDER);
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg image,
+ * removing prior exif tags.
+ *
+ * @param jpeg a byte array containing a jpeg compressed image.
+ * @param exifOutStream an OutputStream to which the jpeg image with added
+ * exif tags will be written.
+ * @throws IOException
+ */
+ public void writeExif(byte[] jpeg, OutputStream exifOutStream) throws IOException {
+ if (jpeg == null || exifOutStream == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = getExifWriterStream(exifOutStream);
+ s.write(jpeg, 0, jpeg.length);
+ s.flush();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg compressed
+ * bitmap, removing prior exif tags.
+ *
+ * @param bmap a bitmap to compress and write exif into.
+ * @param exifOutStream the OutputStream to which the jpeg image with added
+ * exif tags will be written.
+ * @throws IOException
+ */
+ public void writeExif(Bitmap bmap, OutputStream exifOutStream) throws IOException {
+ if (bmap == null || exifOutStream == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = getExifWriterStream(exifOutStream);
+ bmap.compress(Bitmap.CompressFormat.JPEG, 90, s);
+ s.flush();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg stream,
+ * removing prior exif tags.
+ *
+ * @param jpegStream an InputStream containing a jpeg compressed image.
+ * @param exifOutStream an OutputStream to which the jpeg image with added
+ * exif tags will be written.
+ * @throws IOException
+ */
+ public void writeExif(InputStream jpegStream, OutputStream exifOutStream) throws IOException {
+ if (jpegStream == null || exifOutStream == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = getExifWriterStream(exifOutStream);
+ doExifStreamIO(jpegStream, s);
+ s.flush();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg image,
+ * removing prior exif tags.
+ *
+ * @param jpeg a byte array containing a jpeg compressed image.
+ * @param exifOutFileName a String containing the filepath to which the jpeg
+ * image with added exif tags will be written.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public void writeExif(byte[] jpeg, String exifOutFileName) throws FileNotFoundException,
+ IOException {
+ if (jpeg == null || exifOutFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = null;
+ try {
+ s = getExifWriterStream(exifOutFileName);
+ s.write(jpeg, 0, jpeg.length);
+ s.flush();
+ } catch (IOException e) {
+ closeSilently(s);
+ throw e;
+ }
+ s.close();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg compressed
+ * bitmap, removing prior exif tags.
+ *
+ * @param bmap a bitmap to compress and write exif into.
+ * @param exifOutFileName a String containing the filepath to which the jpeg
+ * image with added exif tags will be written.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public void writeExif(Bitmap bmap, String exifOutFileName) throws FileNotFoundException,
+ IOException {
+ if (bmap == null || exifOutFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = null;
+ try {
+ s = getExifWriterStream(exifOutFileName);
+ bmap.compress(Bitmap.CompressFormat.JPEG, 90, s);
+ s.flush();
+ } catch (IOException e) {
+ closeSilently(s);
+ throw e;
+ }
+ s.close();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg stream,
+ * removing prior exif tags.
+ *
+ * @param jpegStream an InputStream containing a jpeg compressed image.
+ * @param exifOutFileName a String containing the filepath to which the jpeg
+ * image with added exif tags will be written.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public void writeExif(InputStream jpegStream, String exifOutFileName)
+ throws FileNotFoundException, IOException {
+ if (jpegStream == null || exifOutFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = null;
+ try {
+ s = getExifWriterStream(exifOutFileName);
+ doExifStreamIO(jpegStream, s);
+ s.flush();
+ } catch (IOException e) {
+ closeSilently(s);
+ throw e;
+ }
+ s.close();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg file, removing
+ * prior exif tags.
+ *
+ * @param jpegFileName a String containing the filepath for a jpeg file.
+ * @param exifOutFileName a String containing the filepath to which the jpeg
+ * image with added exif tags will be written.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public void writeExif(String jpegFileName, String exifOutFileName)
+ throws FileNotFoundException, IOException {
+ if (jpegFileName == null || exifOutFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ InputStream is = null;
+ try {
+ is = new FileInputStream(jpegFileName);
+ writeExif(is, exifOutFileName);
+ } catch (IOException e) {
+ closeSilently(is);
+ throw e;
+ }
+ is.close();
+ }
+
+ /**
+ * Wraps an OutputStream object with an ExifOutputStream. Exif tags in this
+ * ExifInterface object will be added to a jpeg image written to this
+ * stream, removing prior exif tags. Other methods of this ExifInterface
+ * object should not be called until the returned OutputStream has been
+ * closed.
+ *
+ * @param outStream an OutputStream to wrap.
+ * @return an OutputStream that wraps the outStream parameter, and adds exif
+ * metadata. A jpeg image should be written to this stream.
+ */
+ public OutputStream getExifWriterStream(OutputStream outStream) {
+ if (outStream == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ ExifOutputStream eos = new ExifOutputStream(outStream, this);
+ eos.setExifData(mData);
+ return eos;
+ }
+
+ /**
+ * Returns an OutputStream object that writes to a file. Exif tags in this
+ * ExifInterface object will be added to a jpeg image written to this
+ * stream, removing prior exif tags. Other methods of this ExifInterface
+ * object should not be called until the returned OutputStream has been
+ * closed.
+ *
+ * @param exifOutFileName an String containing a filepath for a jpeg file.
+ * @return an OutputStream that writes to the exifOutFileName file, and adds
+ * exif metadata. A jpeg image should be written to this stream.
+ * @throws FileNotFoundException
+ */
+ public OutputStream getExifWriterStream(String exifOutFileName) throws FileNotFoundException {
+ if (exifOutFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream out = null;
+ try {
+ out = (OutputStream) new FileOutputStream(exifOutFileName);
+ } catch (FileNotFoundException e) {
+ closeSilently(out);
+ throw e;
+ }
+ return getExifWriterStream(out);
+ }
+
+ /**
+ * Attempts to do an in-place rewrite the exif metadata in a file for the
+ * given tags. If tags do not exist or do not have the same size as the
+ * existing exif tags, this method will fail.
+ *
+ * @param filename a String containing a filepath for a jpeg file with exif
+ * tags to rewrite.
+ * @param tags tags that will be written into the jpeg file over existing
+ * tags if possible.
+ * @return true if success, false if could not overwrite. If false, no
+ * changes are made to the file.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public boolean rewriteExif(String filename, Collection<ExifTag> tags)
+ throws FileNotFoundException, IOException {
+ RandomAccessFile file = null;
+ InputStream is = null;
+ boolean ret;
+ try {
+ File temp = new File(filename);
+ is = new BufferedInputStream(new FileInputStream(temp));
+
+ // Parse beginning of APP1 in exif to find size of exif header.
+ ExifParser parser = null;
+ try {
+ parser = ExifParser.parse(is, this);
+ } catch (ExifInvalidFormatException e) {
+ throw new IOException("Invalid exif format : ", e);
+ }
+ long exifSize = parser.getOffsetToExifEndFromSOF();
+
+ // Free up resources
+ is.close();
+ is = null;
+
+ // Open file for memory mapping.
+ file = new RandomAccessFile(temp, "rw");
+ long fileLength = file.length();
+ if (fileLength < exifSize) {
+ throw new IOException("Filesize changed during operation");
+ }
+
+ // Map only exif header into memory.
+ ByteBuffer buf = file.getChannel().map(MapMode.READ_WRITE, 0, exifSize);
+
+ // Attempt to overwrite tag values without changing lengths (avoids
+ // file copy).
+ ret = rewriteExif(buf, tags);
+ } catch (IOException e) {
+ closeSilently(file);
+ throw e;
+ } finally {
+ closeSilently(is);
+ }
+ file.close();
+ return ret;
+ }
+
+ /**
+ * Attempts to do an in-place rewrite the exif metadata in a ByteBuffer for
+ * the given tags. If tags do not exist or do not have the same size as the
+ * existing exif tags, this method will fail.
+ *
+ * @param buf a ByteBuffer containing a jpeg file with existing exif tags to
+ * rewrite.
+ * @param tags tags that will be written into the jpeg ByteBuffer over
+ * existing tags if possible.
+ * @return true if success, false if could not overwrite. If false, no
+ * changes are made to the ByteBuffer.
+ * @throws IOException
+ */
+ public boolean rewriteExif(ByteBuffer buf, Collection<ExifTag> tags) throws IOException {
+ ExifModifier mod = null;
+ try {
+ mod = new ExifModifier(buf, this);
+ for (ExifTag t : tags) {
+ mod.modifyTag(t);
+ }
+ return mod.commit();
+ } catch (ExifInvalidFormatException e) {
+ throw new IOException("Invalid exif format : " + e);
+ }
+ }
+
+ /**
+ * Attempts to do an in-place rewrite of the exif metadata. If this fails,
+ * fall back to overwriting file. This preserves tags that are not being
+ * rewritten.
+ *
+ * @param filename a String containing a filepath for a jpeg file.
+ * @param tags tags that will be written into the jpeg file over existing
+ * tags if possible.
+ * @throws FileNotFoundException
+ * @throws IOException
+ * @see #rewriteExif
+ */
+ public void forceRewriteExif(String filename, Collection<ExifTag> tags)
+ throws FileNotFoundException,
+ IOException {
+ // Attempt in-place write
+ if (!rewriteExif(filename, tags)) {
+ // Fall back to doing a copy
+ ExifData tempData = mData;
+ mData = new ExifData(DEFAULT_BYTE_ORDER);
+ FileInputStream is = null;
+ ByteArrayOutputStream bytes = null;
+ try {
+ is = new FileInputStream(filename);
+ bytes = new ByteArrayOutputStream();
+ doExifStreamIO(is, bytes);
+ byte[] imageBytes = bytes.toByteArray();
+ readExif(imageBytes);
+ setTags(tags);
+ writeExif(imageBytes, filename);
+ } catch (IOException e) {
+ closeSilently(is);
+ throw e;
+ } finally {
+ is.close();
+ // Prevent clobbering of mData
+ mData = tempData;
+ }
+ }
+ }
+
+ /**
+ * Attempts to do an in-place rewrite of the exif metadata using the tags in
+ * this ExifInterface object. If this fails, fall back to overwriting file.
+ * This preserves tags that are not being rewritten.
+ *
+ * @param filename a String containing a filepath for a jpeg file.
+ * @throws FileNotFoundException
+ * @throws IOException
+ * @see #rewriteExif
+ */
+ public void forceRewriteExif(String filename) throws FileNotFoundException, IOException {
+ forceRewriteExif(filename, getAllTags());
+ }
+
+ /**
+ * Get the exif tags in this ExifInterface object or null if none exist.
+ *
+ * @return a List of {@link ExifTag}s.
+ */
+ public List<ExifTag> getAllTags() {
+ return mData.getAllTags();
+ }
+
+ /**
+ * Returns a list of ExifTags that share a TID (which can be obtained by
+ * calling {@link #getTrueTagKey} on a defined tag constant) or null if none
+ * exist.
+ *
+ * @param tagId a TID as defined in the exif standard (or with
+ * {@link #defineTag}).
+ * @return a List of {@link ExifTag}s.
+ */
+ public List<ExifTag> getTagsForTagId(short tagId) {
+ return mData.getAllTagsForTagId(tagId);
+ }
+
+ /**
+ * Returns a list of ExifTags that share an IFD (which can be obtained by
+ * calling {@link #getTrueIFD} on a defined tag constant) or null if none
+ * exist.
+ *
+ * @param ifdId an IFD as defined in the exif standard (or with
+ * {@link #defineTag}).
+ * @return a List of {@link ExifTag}s.
+ */
+ public List<ExifTag> getTagsForIfdId(int ifdId) {
+ return mData.getAllTagsForIfd(ifdId);
+ }
+
+ /**
+ * Gets an ExifTag for an IFD other than the tag's default.
+ *
+ * @see #getTag
+ */
+ public ExifTag getTag(int tagId, int ifdId) {
+ if (!ExifTag.isValidIfd(ifdId)) {
+ return null;
+ }
+ return mData.getTag(getTrueTagKey(tagId), ifdId);
+ }
+
+ /**
+ * Returns the ExifTag in that tag's default IFD for a defined tag constant
+ * or null if none exists.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return an {@link ExifTag} or null if none exists.
+ */
+ public ExifTag getTag(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTag(tagId, ifdId);
+ }
+
+ /**
+ * Gets a tag value for an IFD other than the tag's default.
+ *
+ * @see #getTagValue
+ */
+ public Object getTagValue(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ return (t == null) ? null : t.getValue();
+ }
+
+ /**
+ * Returns the value of the ExifTag in that tag's default IFD for a defined
+ * tag constant or null if none exists or the value could not be cast into
+ * the return type.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return the value of the ExifTag or null if none exists.
+ */
+ public Object getTagValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagValue(tagId, ifdId);
+ }
+
+ /*
+ * Getter methods that are similar to getTagValue. Null is returned if the
+ * tag value cannot be cast into the return type.
+ */
+
+ /**
+ * @see #getTagValue
+ */
+ public String getTagStringValue(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return null;
+ }
+ return t.getValueAsString();
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public String getTagStringValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagStringValue(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Long getTagLongValue(int tagId, int ifdId) {
+ long[] l = getTagLongValues(tagId, ifdId);
+ if (l == null || l.length <= 0) {
+ return null;
+ }
+ return new Long(l[0]);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Long getTagLongValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagLongValue(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Integer getTagIntValue(int tagId, int ifdId) {
+ int[] l = getTagIntValues(tagId, ifdId);
+ if (l == null || l.length <= 0) {
+ return null;
+ }
+ return new Integer(l[0]);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Integer getTagIntValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagIntValue(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Byte getTagByteValue(int tagId, int ifdId) {
+ byte[] l = getTagByteValues(tagId, ifdId);
+ if (l == null || l.length <= 0) {
+ return null;
+ }
+ return new Byte(l[0]);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Byte getTagByteValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagByteValue(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Rational getTagRationalValue(int tagId, int ifdId) {
+ Rational[] l = getTagRationalValues(tagId, ifdId);
+ if (l == null || l.length == 0) {
+ return null;
+ }
+ return new Rational(l[0]);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Rational getTagRationalValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagRationalValue(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public long[] getTagLongValues(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return null;
+ }
+ return t.getValueAsLongs();
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public long[] getTagLongValues(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagLongValues(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public int[] getTagIntValues(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return null;
+ }
+ return t.getValueAsInts();
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public int[] getTagIntValues(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagIntValues(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public byte[] getTagByteValues(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return null;
+ }
+ return t.getValueAsBytes();
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public byte[] getTagByteValues(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagByteValues(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Rational[] getTagRationalValues(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return null;
+ }
+ return t.getValueAsRationals();
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Rational[] getTagRationalValues(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagRationalValues(tagId, ifdId);
+ }
+
+ /**
+ * Checks whether a tag has a defined number of elements.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return true if the tag has a defined number of elements.
+ */
+ public boolean isTagCountDefined(int tagId) {
+ int info = getTagInfo().get(tagId);
+ // No value in info can be zero, as all tags have a non-zero type
+ if (info == 0) {
+ return false;
+ }
+ return getComponentCountFromInfo(info) != ExifTag.SIZE_UNDEFINED;
+ }
+
+ /**
+ * Gets the defined number of elements for a tag.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return the number of elements or {@link ExifTag#SIZE_UNDEFINED} if the
+ * tag or the number of elements is not defined.
+ */
+ public int getDefinedTagCount(int tagId) {
+ int info = getTagInfo().get(tagId);
+ if (info == 0) {
+ return ExifTag.SIZE_UNDEFINED;
+ }
+ return getComponentCountFromInfo(info);
+ }
+
+ /**
+ * Gets the number of elements for an ExifTag in a given IFD.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param ifdId the IFD containing the ExifTag to check.
+ * @return the number of elements in the ExifTag, if the tag's size is
+ * undefined this will return the actual number of elements that is
+ * in the ExifTag's value.
+ */
+ public int getActualTagCount(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return 0;
+ }
+ return t.getComponentCount();
+ }
+
+ /**
+ * Gets the default IFD for a tag.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return the default IFD for a tag definition or {@link #IFD_NULL} if no
+ * definition exists.
+ */
+ public int getDefinedTagDefaultIfd(int tagId) {
+ int info = getTagInfo().get(tagId);
+ if (info == DEFINITION_NULL) {
+ return IFD_NULL;
+ }
+ return getTrueIfd(tagId);
+ }
+
+ /**
+ * Gets the defined type for a tag.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return the type.
+ * @see ExifTag#getDataType()
+ */
+ public short getDefinedTagType(int tagId) {
+ int info = getTagInfo().get(tagId);
+ if (info == 0) {
+ return -1;
+ }
+ return getTypeFromInfo(info);
+ }
+
+ /**
+ * Returns true if tag TID is one of the following: {@link TAG_EXIF_IFD},
+ * {@link TAG_GPS_IFD}, {@link TAG_JPEG_INTERCHANGE_FORMAT},
+ * {@link TAG_STRIP_OFFSETS}, {@link TAG_INTEROPERABILITY_IFD}
+ * <p>
+ * Note: defining tags with these TID's is disallowed.
+ *
+ * @param tag a tag's TID (can be obtained from a defined tag constant with
+ * {@link #getTrueTagKey}).
+ * @return true if the TID is that of an offset tag.
+ */
+ protected static boolean isOffsetTag(short tag) {
+ return sOffsetTags.contains(tag);
+ }
+
+ /**
+ * Creates a tag for a defined tag constant in a given IFD if that IFD is
+ * allowed for the tag. This method will fail anytime the appropriate
+ * {@link ExifTag#setValue} for this tag's datatype would fail.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param ifdId the IFD that the tag should be in.
+ * @param val the value of the tag to set.
+ * @return an ExifTag object or null if one could not be constructed.
+ * @see #buildTag
+ */
+ public ExifTag buildTag(int tagId, int ifdId, Object val) {
+ int info = getTagInfo().get(tagId);
+ if (info == 0 || val == null) {
+ return null;
+ }
+ short type = getTypeFromInfo(info);
+ int definedCount = getComponentCountFromInfo(info);
+ boolean hasDefinedCount = (definedCount != ExifTag.SIZE_UNDEFINED);
+ if (!ExifInterface.isIfdAllowed(info, ifdId)) {
+ return null;
+ }
+ ExifTag t = new ExifTag(getTrueTagKey(tagId), type, definedCount, ifdId, hasDefinedCount);
+ if (!t.setValue(val)) {
+ return null;
+ }
+ return t;
+ }
+
+ /**
+ * Creates a tag for a defined tag constant in the tag's default IFD.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param val the tag's value.
+ * @return an ExifTag object.
+ */
+ public ExifTag buildTag(int tagId, Object val) {
+ int ifdId = getTrueIfd(tagId);
+ return buildTag(tagId, ifdId, val);
+ }
+
+ protected ExifTag buildUninitializedTag(int tagId) {
+ int info = getTagInfo().get(tagId);
+ if (info == 0) {
+ return null;
+ }
+ short type = getTypeFromInfo(info);
+ int definedCount = getComponentCountFromInfo(info);
+ boolean hasDefinedCount = (definedCount != ExifTag.SIZE_UNDEFINED);
+ int ifdId = getTrueIfd(tagId);
+ ExifTag t = new ExifTag(getTrueTagKey(tagId), type, definedCount, ifdId, hasDefinedCount);
+ return t;
+ }
+
+ /**
+ * Sets the value of an ExifTag if it exists in the given IFD. The value
+ * must be the correct type and length for that ExifTag.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param ifdId the IFD that the ExifTag is in.
+ * @param val the value to set.
+ * @return true if success, false if the ExifTag doesn't exist or the value
+ * is the wrong type/length.
+ * @see #setTagValue
+ */
+ public boolean setTagValue(int tagId, int ifdId, Object val) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return false;
+ }
+ return t.setValue(val);
+ }
+
+ /**
+ * Sets the value of an ExifTag if it exists it's default IFD. The value
+ * must be the correct type and length for that ExifTag.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param val the value to set.
+ * @return true if success, false if the ExifTag doesn't exist or the value
+ * is the wrong type/length.
+ */
+ public boolean setTagValue(int tagId, Object val) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return setTagValue(tagId, ifdId, val);
+ }
+
+ /**
+ * Puts an ExifTag into this ExifInterface object's tags, removing a
+ * previous ExifTag with the same TID and IFD. The IFD it is put into will
+ * be the one the tag was created with in {@link #buildTag}.
+ *
+ * @param tag an ExifTag to put into this ExifInterface's tags.
+ * @return the previous ExifTag with the same TID and IFD or null if none
+ * exists.
+ */
+ public ExifTag setTag(ExifTag tag) {
+ return mData.addTag(tag);
+ }
+
+ /**
+ * Puts a collection of ExifTags into this ExifInterface objects's tags. Any
+ * previous ExifTags with the same TID and IFDs will be removed.
+ *
+ * @param tags a Collection of ExifTags.
+ * @see #setTag
+ */
+ public void setTags(Collection<ExifTag> tags) {
+ for (ExifTag t : tags) {
+ setTag(t);
+ }
+ }
+
+ /**
+ * Removes the ExifTag for a tag constant from the given IFD.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param ifdId the IFD of the ExifTag to remove.
+ */
+ public void deleteTag(int tagId, int ifdId) {
+ mData.removeTag(getTrueTagKey(tagId), ifdId);
+ }
+
+ /**
+ * Removes the ExifTag for a tag constant from that tag's default IFD.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ */
+ public void deleteTag(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ deleteTag(tagId, ifdId);
+ }
+
+ /**
+ * Creates a new tag definition in this ExifInterface object for a given TID
+ * and default IFD. Creating a definition with the same TID and default IFD
+ * as a previous definition will override it.
+ *
+ * @param tagId the TID for the tag.
+ * @param defaultIfd the default IFD for the tag.
+ * @param tagType the type of the tag (see {@link ExifTag#getDataType()}).
+ * @param defaultComponentCount the number of elements of this tag's type in
+ * the tags value.
+ * @param allowedIfds the IFD's this tag is allowed to be put in.
+ * @return the defined tag constant (e.g. {@link #TAG_IMAGE_WIDTH}) or
+ * {@link #TAG_NULL} if the definition could not be made.
+ */
+ public int setTagDefinition(short tagId, int defaultIfd, short tagType,
+ short defaultComponentCount, int[] allowedIfds) {
+ if (sBannedDefines.contains(tagId)) {
+ return TAG_NULL;
+ }
+ if (ExifTag.isValidType(tagType) && ExifTag.isValidIfd(defaultIfd)) {
+ int tagDef = defineTag(defaultIfd, tagId);
+ if (tagDef == TAG_NULL) {
+ return TAG_NULL;
+ }
+ int[] otherDefs = getTagDefinitionsForTagId(tagId);
+ SparseIntArray infos = getTagInfo();
+ // Make sure defaultIfd is in allowedIfds
+ boolean defaultCheck = false;
+ for (int i : allowedIfds) {
+ if (defaultIfd == i) {
+ defaultCheck = true;
+ }
+ if (!ExifTag.isValidIfd(i)) {
+ return TAG_NULL;
+ }
+ }
+ if (!defaultCheck) {
+ return TAG_NULL;
+ }
+
+ int ifdFlags = getFlagsFromAllowedIfds(allowedIfds);
+ // Make sure no identical tags can exist in allowedIfds
+ if (otherDefs != null) {
+ for (int def : otherDefs) {
+ int tagInfo = infos.get(def);
+ int allowedFlags = getAllowedIfdFlagsFromInfo(tagInfo);
+ if ((ifdFlags & allowedFlags) != 0) {
+ return TAG_NULL;
+ }
+ }
+ }
+ getTagInfo().put(tagDef, ifdFlags << 24 | (tagType << 16) | defaultComponentCount);
+ return tagDef;
+ }
+ return TAG_NULL;
+ }
+
+ protected int getTagDefinition(short tagId, int defaultIfd) {
+ return getTagInfo().get(defineTag(defaultIfd, tagId));
+ }
+
+ protected int[] getTagDefinitionsForTagId(short tagId) {
+ int[] ifds = IfdData.getIfds();
+ int[] defs = new int[ifds.length];
+ int counter = 0;
+ SparseIntArray infos = getTagInfo();
+ for (int i : ifds) {
+ int def = defineTag(i, tagId);
+ if (infos.get(def) != DEFINITION_NULL) {
+ defs[counter++] = def;
+ }
+ }
+ if (counter == 0) {
+ return null;
+ }
+
+ return Arrays.copyOfRange(defs, 0, counter);
+ }
+
+ protected int getTagDefinitionForTag(ExifTag tag) {
+ short type = tag.getDataType();
+ int count = tag.getComponentCount();
+ int ifd = tag.getIfd();
+ return getTagDefinitionForTag(tag.getTagId(), type, count, ifd);
+ }
+
+ protected int getTagDefinitionForTag(short tagId, short type, int count, int ifd) {
+ int[] defs = getTagDefinitionsForTagId(tagId);
+ if (defs == null) {
+ return TAG_NULL;
+ }
+ SparseIntArray infos = getTagInfo();
+ int ret = TAG_NULL;
+ for (int i : defs) {
+ int info = infos.get(i);
+ short def_type = getTypeFromInfo(info);
+ int def_count = getComponentCountFromInfo(info);
+ int[] def_ifds = getAllowedIfdsFromInfo(info);
+ boolean valid_ifd = false;
+ for (int j : def_ifds) {
+ if (j == ifd) {
+ valid_ifd = true;
+ break;
+ }
+ }
+ if (valid_ifd && type == def_type
+ && (count == def_count || def_count == ExifTag.SIZE_UNDEFINED)) {
+ ret = i;
+ break;
+ }
+ }
+ return ret;
+ }
+
+ /**
+ * Removes a tag definition for given defined tag constant.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ */
+ public void removeTagDefinition(int tagId) {
+ getTagInfo().delete(tagId);
+ }
+
+ /**
+ * Resets tag definitions to the default ones.
+ */
+ public void resetTagDefinitions() {
+ mTagInfo = null;
+ }
+
+ /**
+ * Returns the thumbnail from IFD1 as a bitmap, or null if none exists.
+ *
+ * @return the thumbnail as a bitmap.
+ */
+ public Bitmap getThumbnailBitmap() {
+ if (mData.hasCompressedThumbnail()) {
+ byte[] thumb = mData.getCompressedThumbnail();
+ return BitmapFactory.decodeByteArray(thumb, 0, thumb.length);
+ } else if (mData.hasUncompressedStrip()) {
+ // TODO: implement uncompressed
+ }
+ return null;
+ }
+
+ /**
+ * Returns the thumbnail from IFD1 as a byte array, or null if none exists.
+ * The bytes may either be an uncompressed strip as specified in the exif
+ * standard or a jpeg compressed image.
+ *
+ * @return the thumbnail as a byte array.
+ */
+ public byte[] getThumbnailBytes() {
+ if (mData.hasCompressedThumbnail()) {
+ return mData.getCompressedThumbnail();
+ } else if (mData.hasUncompressedStrip()) {
+ // TODO: implement this
+ }
+ return null;
+ }
+
+ /**
+ * Returns the thumbnail if it is jpeg compressed, or null if none exists.
+ *
+ * @return the thumbnail as a byte array.
+ */
+ public byte[] getThumbnail() {
+ return mData.getCompressedThumbnail();
+ }
+
+ /**
+ * Check if thumbnail is compressed.
+ *
+ * @return true if the thumbnail is compressed.
+ */
+ public boolean isThumbnailCompressed() {
+ return mData.hasCompressedThumbnail();
+ }
+
+ /**
+ * Check if thumbnail exists.
+ *
+ * @return true if a compressed thumbnail exists.
+ */
+ public boolean hasThumbnail() {
+ // TODO: add back in uncompressed strip
+ return mData.hasCompressedThumbnail();
+ }
+
+ // TODO: uncompressed thumbnail setters
+
+ /**
+ * Sets the thumbnail to be a jpeg compressed image. Clears any prior
+ * thumbnail.
+ *
+ * @param thumb a byte array containing a jpeg compressed image.
+ * @return true if the thumbnail was set.
+ */
+ public boolean setCompressedThumbnail(byte[] thumb) {
+ mData.clearThumbnailAndStrips();
+ mData.setCompressedThumbnail(thumb);
+ return true;
+ }
+
+ /**
+ * Sets the thumbnail to be a jpeg compressed bitmap. Clears any prior
+ * thumbnail.
+ *
+ * @param thumb a bitmap to compress to a jpeg thumbnail.
+ * @return true if the thumbnail was set.
+ */
+ public boolean setCompressedThumbnail(Bitmap thumb) {
+ ByteArrayOutputStream thumbnail = new ByteArrayOutputStream();
+ if (!thumb.compress(Bitmap.CompressFormat.JPEG, 90, thumbnail)) {
+ return false;
+ }
+ return setCompressedThumbnail(thumbnail.toByteArray());
+ }
+
+ /**
+ * Clears the compressed thumbnail if it exists.
+ */
+ public void removeCompressedThumbnail() {
+ mData.setCompressedThumbnail(null);
+ }
+
+ // Convenience methods:
+
+ /**
+ * Decodes the user comment tag into string as specified in the EXIF
+ * standard. Returns null if decoding failed.
+ */
+ public String getUserComment() {
+ return mData.getUserComment();
+ }
+
+ /**
+ * Returns the Orientation ExifTag value for a given number of degrees.
+ *
+ * @param degrees the amount an image is rotated in degrees.
+ */
+ public static short getOrientationValueForRotation(int degrees) {
+ degrees %= 360;
+ if (degrees < 0) {
+ degrees += 360;
+ }
+ if (degrees < 90) {
+ return Orientation.TOP_LEFT; // 0 degrees
+ } else if (degrees < 180) {
+ return Orientation.RIGHT_TOP; // 90 degrees cw
+ } else if (degrees < 270) {
+ return Orientation.BOTTOM_LEFT; // 180 degrees
+ } else {
+ return Orientation.RIGHT_BOTTOM; // 270 degrees cw
+ }
+ }
+
+ /**
+ * Returns the rotation degrees corresponding to an ExifTag Orientation
+ * value.
+ *
+ * @param orientation the ExifTag Orientation value.
+ */
+ public static int getRotationForOrientationValue(short orientation) {
+ switch (orientation) {
+ case Orientation.TOP_LEFT:
+ return 0;
+ case Orientation.RIGHT_TOP:
+ return 90;
+ case Orientation.BOTTOM_LEFT:
+ return 180;
+ case Orientation.RIGHT_BOTTOM:
+ return 270;
+ default:
+ return 0;
+ }
+ }
+
+ /**
+ * Gets the double representation of the GPS latitude or longitude
+ * coordinate.
+ *
+ * @param coordinate an array of 3 Rationals representing the degrees,
+ * minutes, and seconds of the GPS location as defined in the
+ * exif specification.
+ * @param reference a GPS reference reperesented by a String containing "N",
+ * "S", "E", or "W".
+ * @return the GPS coordinate represented as degrees + minutes/60 +
+ * seconds/3600
+ */
+ public static double convertLatOrLongToDouble(Rational[] coordinate, String reference) {
+ try {
+ double degrees = coordinate[0].toDouble();
+ double minutes = coordinate[1].toDouble();
+ double seconds = coordinate[2].toDouble();
+ double result = degrees + minutes / 60.0 + seconds / 3600.0;
+ if ((reference.equals("S") || reference.equals("W"))) {
+ return -result;
+ }
+ return result;
+ } catch (ArrayIndexOutOfBoundsException e) {
+ throw new IllegalArgumentException();
+ }
+ }
+
+ /**
+ * Gets the GPS latitude and longitude as a pair of doubles from this
+ * ExifInterface object's tags, or null if the necessary tags do not exist.
+ *
+ * @return an array of 2 doubles containing the latitude, and longitude
+ * respectively.
+ * @see #convertLatOrLongToDouble
+ */
+ public double[] getLatLongAsDoubles() {
+ Rational[] latitude = getTagRationalValues(TAG_GPS_LATITUDE);
+ String latitudeRef = getTagStringValue(TAG_GPS_LATITUDE_REF);
+ Rational[] longitude = getTagRationalValues(TAG_GPS_LONGITUDE);
+ String longitudeRef = getTagStringValue(TAG_GPS_LONGITUDE_REF);
+ if (latitude == null || longitude == null || latitudeRef == null || longitudeRef == null
+ || latitude.length < 3 || longitude.length < 3) {
+ return null;
+ }
+ double[] latLon = new double[2];
+ latLon[0] = convertLatOrLongToDouble(latitude, latitudeRef);
+ latLon[1] = convertLatOrLongToDouble(longitude, longitudeRef);
+ return latLon;
+ }
+
+ private static final String GPS_DATE_FORMAT_STR = "yyyy:MM:dd";
+ private static final String DATETIME_FORMAT_STR = "yyyy:MM:dd kk:mm:ss";
+ private final DateFormat mDateTimeStampFormat = new SimpleDateFormat(DATETIME_FORMAT_STR);
+ private final DateFormat mGPSDateStampFormat = new SimpleDateFormat(GPS_DATE_FORMAT_STR);
+ private final Calendar mGPSTimeStampCalendar = Calendar
+ .getInstance(TimeZone.getTimeZone("UTC"));
+
+ /**
+ * Creates, formats, and sets the DateTimeStamp tag for one of:
+ * {@link #TAG_DATE_TIME}, {@link #TAG_DATE_TIME_DIGITIZED},
+ * {@link #TAG_DATE_TIME_ORIGINAL}.
+ *
+ * @param tagId one of the DateTimeStamp tags.
+ * @param timestamp a timestamp to format.
+ * @param timezone a TimeZone object.
+ * @return true if success, false if the tag could not be set.
+ */
+ public boolean addDateTimeStampTag(int tagId, long timestamp, TimeZone timezone) {
+ if (tagId == TAG_DATE_TIME || tagId == TAG_DATE_TIME_DIGITIZED
+ || tagId == TAG_DATE_TIME_ORIGINAL) {
+ mDateTimeStampFormat.setTimeZone(timezone);
+ ExifTag t = buildTag(tagId, mDateTimeStampFormat.format(timestamp));
+ if (t == null) {
+ return false;
+ }
+ setTag(t);
+ } else {
+ return false;
+ }
+ return true;
+ }
+
+ /**
+ * Creates and sets all to the GPS tags for a give latitude and longitude.
+ *
+ * @param latitude a GPS latitude coordinate.
+ * @param longitude a GPS longitude coordinate.
+ * @return true if success, false if they could not be created or set.
+ */
+ public boolean addGpsTags(double latitude, double longitude) {
+ ExifTag latTag = buildTag(TAG_GPS_LATITUDE, toExifLatLong(latitude));
+ ExifTag longTag = buildTag(TAG_GPS_LONGITUDE, toExifLatLong(longitude));
+ ExifTag latRefTag = buildTag(TAG_GPS_LATITUDE_REF,
+ latitude >= 0 ? ExifInterface.GpsLatitudeRef.NORTH
+ : ExifInterface.GpsLatitudeRef.SOUTH);
+ ExifTag longRefTag = buildTag(TAG_GPS_LONGITUDE_REF,
+ longitude >= 0 ? ExifInterface.GpsLongitudeRef.EAST
+ : ExifInterface.GpsLongitudeRef.WEST);
+ if (latTag == null || longTag == null || latRefTag == null || longRefTag == null) {
+ return false;
+ }
+ setTag(latTag);
+ setTag(longTag);
+ setTag(latRefTag);
+ setTag(longRefTag);
+ return true;
+ }
+
+ /**
+ * Creates and sets the GPS timestamp tag.
+ *
+ * @param timestamp a GPS timestamp.
+ * @return true if success, false if could not be created or set.
+ */
+ public boolean addGpsDateTimeStampTag(long timestamp) {
+ ExifTag t = buildTag(TAG_GPS_DATE_STAMP, mGPSDateStampFormat.format(timestamp));
+ if (t == null) {
+ return false;
+ }
+ setTag(t);
+ mGPSTimeStampCalendar.setTimeInMillis(timestamp);
+ t = buildTag(TAG_GPS_TIME_STAMP, new Rational[] {
+ new Rational(mGPSTimeStampCalendar.get(Calendar.HOUR_OF_DAY), 1),
+ new Rational(mGPSTimeStampCalendar.get(Calendar.MINUTE), 1),
+ new Rational(mGPSTimeStampCalendar.get(Calendar.SECOND), 1)
+ });
+ if (t == null) {
+ return false;
+ }
+ setTag(t);
+ return true;
+ }
+
+ private static Rational[] toExifLatLong(double value) {
+ // convert to the format dd/1 mm/1 ssss/100
+ value = Math.abs(value);
+ int degrees = (int) value;
+ value = (value - degrees) * 60;
+ int minutes = (int) value;
+ value = (value - minutes) * 6000;
+ int seconds = (int) value;
+ return new Rational[] {
+ new Rational(degrees, 1), new Rational(minutes, 1), new Rational(seconds, 100)
+ };
+ }
+
+ private void doExifStreamIO(InputStream is, OutputStream os) throws IOException {
+ byte[] buf = new byte[1024];
+ int ret = is.read(buf, 0, 1024);
+ while (ret != -1) {
+ os.write(buf, 0, ret);
+ ret = is.read(buf, 0, 1024);
+ }
+ }
+
+ protected static void closeSilently(Closeable c) {
+ if (c != null) {
+ try {
+ c.close();
+ } catch (Throwable e) {
+ // ignored
+ }
+ }
+ }
+
+ private SparseIntArray mTagInfo = null;
+
+ protected SparseIntArray getTagInfo() {
+ if (mTagInfo == null) {
+ mTagInfo = new SparseIntArray();
+ initTagInfo();
+ }
+ return mTagInfo;
+ }
+
+ private void initTagInfo() {
+ /**
+ * We put tag information in a 4-bytes integer. The first byte a bitmask
+ * representing the allowed IFDs of the tag, the second byte is the data
+ * type, and the last two byte are a short value indicating the default
+ * component count of this tag.
+ */
+ // IFD0 tags
+ int[] ifdAllowedIfds = {
+ IfdId.TYPE_IFD_0, IfdId.TYPE_IFD_1
+ };
+ int ifdFlags = getFlagsFromAllowedIfds(ifdAllowedIfds) << 24;
+ mTagInfo.put(ExifInterface.TAG_MAKE,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_IMAGE_WIDTH,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_IMAGE_LENGTH,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_BITS_PER_SAMPLE,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 3);
+ mTagInfo.put(ExifInterface.TAG_COMPRESSION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_PHOTOMETRIC_INTERPRETATION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_ORIENTATION, ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16
+ | 1);
+ mTagInfo.put(ExifInterface.TAG_SAMPLES_PER_PIXEL,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_PLANAR_CONFIGURATION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_Y_CB_CR_SUB_SAMPLING,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_Y_CB_CR_POSITIONING,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_X_RESOLUTION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_Y_RESOLUTION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_RESOLUTION_UNIT,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_STRIP_OFFSETS,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_ROWS_PER_STRIP,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_STRIP_BYTE_COUNTS,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_TRANSFER_FUNCTION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 3 * 256);
+ mTagInfo.put(ExifInterface.TAG_WHITE_POINT,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_PRIMARY_CHROMATICITIES,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 6);
+ mTagInfo.put(ExifInterface.TAG_Y_CB_CR_COEFFICIENTS,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 3);
+ mTagInfo.put(ExifInterface.TAG_REFERENCE_BLACK_WHITE,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 6);
+ mTagInfo.put(ExifInterface.TAG_DATE_TIME,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | 20);
+ mTagInfo.put(ExifInterface.TAG_IMAGE_DESCRIPTION,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_MAKE,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_MODEL,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_SOFTWARE,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_ARTIST,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_COPYRIGHT,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_EXIF_IFD,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_IFD,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ // IFD1 tags
+ int[] ifd1AllowedIfds = {
+ IfdId.TYPE_IFD_1
+ };
+ int ifdFlags1 = getFlagsFromAllowedIfds(ifd1AllowedIfds) << 24;
+ mTagInfo.put(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT,
+ ifdFlags1 | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH,
+ ifdFlags1 | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ // Exif tags
+ int[] exifAllowedIfds = {
+ IfdId.TYPE_IFD_EXIF
+ };
+ int exifFlags = getFlagsFromAllowedIfds(exifAllowedIfds) << 24;
+ mTagInfo.put(ExifInterface.TAG_EXIF_VERSION,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | 4);
+ mTagInfo.put(ExifInterface.TAG_FLASHPIX_VERSION,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | 4);
+ mTagInfo.put(ExifInterface.TAG_COLOR_SPACE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_COMPONENTS_CONFIGURATION,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | 4);
+ mTagInfo.put(ExifInterface.TAG_COMPRESSED_BITS_PER_PIXEL,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_PIXEL_X_DIMENSION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_PIXEL_Y_DIMENSION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_MAKER_NOTE,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_USER_COMMENT,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_RELATED_SOUND_FILE,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | 13);
+ mTagInfo.put(ExifInterface.TAG_DATE_TIME_ORIGINAL,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | 20);
+ mTagInfo.put(ExifInterface.TAG_DATE_TIME_DIGITIZED,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | 20);
+ mTagInfo.put(ExifInterface.TAG_SUB_SEC_TIME,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_SUB_SEC_TIME_ORIGINAL,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_SUB_SEC_TIME_DIGITIZED,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_IMAGE_UNIQUE_ID,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | 33);
+ mTagInfo.put(ExifInterface.TAG_EXPOSURE_TIME,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_F_NUMBER,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_EXPOSURE_PROGRAM,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SPECTRAL_SENSITIVITY,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_ISO_SPEED_RATINGS,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_OECF,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_SHUTTER_SPEED_VALUE,
+ exifFlags | ExifTag.TYPE_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_APERTURE_VALUE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_BRIGHTNESS_VALUE,
+ exifFlags | ExifTag.TYPE_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_EXPOSURE_BIAS_VALUE,
+ exifFlags | ExifTag.TYPE_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_MAX_APERTURE_VALUE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SUBJECT_DISTANCE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_METERING_MODE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_LIGHT_SOURCE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FLASH,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FOCAL_LENGTH,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SUBJECT_AREA,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_FLASH_ENERGY,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SPATIAL_FREQUENCY_RESPONSE,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_FOCAL_PLANE_X_RESOLUTION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FOCAL_PLANE_Y_RESOLUTION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FOCAL_PLANE_RESOLUTION_UNIT,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SUBJECT_LOCATION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_EXPOSURE_INDEX,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SENSING_METHOD,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FILE_SOURCE,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SCENE_TYPE,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_CFA_PATTERN,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_CUSTOM_RENDERED,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_EXPOSURE_MODE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_WHITE_BALANCE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_DIGITAL_ZOOM_RATIO,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FOCAL_LENGTH_IN_35_MM_FILE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SCENE_CAPTURE_TYPE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GAIN_CONTROL,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_CONTRAST,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SATURATION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SHARPNESS,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_DEVICE_SETTING_DESCRIPTION,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_SUBJECT_DISTANCE_RANGE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_INTEROPERABILITY_IFD, exifFlags
+ | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ // GPS tag
+ int[] gpsAllowedIfds = {
+ IfdId.TYPE_IFD_GPS
+ };
+ int gpsFlags = getFlagsFromAllowedIfds(gpsAllowedIfds) << 24;
+ mTagInfo.put(ExifInterface.TAG_GPS_VERSION_ID,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_BYTE << 16 | 4);
+ mTagInfo.put(ExifInterface.TAG_GPS_LATITUDE_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_LONGITUDE_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_LATITUDE,
+ gpsFlags | ExifTag.TYPE_RATIONAL << 16 | 3);
+ mTagInfo.put(ExifInterface.TAG_GPS_LONGITUDE,
+ gpsFlags | ExifTag.TYPE_RATIONAL << 16 | 3);
+ mTagInfo.put(ExifInterface.TAG_GPS_ALTITUDE_REF,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_BYTE << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_ALTITUDE,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_TIME_STAMP,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 3);
+ mTagInfo.put(ExifInterface.TAG_GPS_SATTELLITES,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_GPS_STATUS,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_MEASURE_MODE,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_DOP,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_SPEED_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_SPEED,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_TRACK_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_TRACK,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_IMG_DIRECTION_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_IMG_DIRECTION,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_MAP_DATUM,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_LATITUDE_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_LATITUDE,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_BEARING_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_BEARING,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_DISTANCE_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_DISTANCE,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_PROCESSING_METHOD,
+ gpsFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_GPS_AREA_INFORMATION,
+ gpsFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_GPS_DATE_STAMP,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 11);
+ mTagInfo.put(ExifInterface.TAG_GPS_DIFFERENTIAL,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 11);
+ // Interoperability tag
+ int[] interopAllowedIfds = {
+ IfdId.TYPE_IFD_INTEROPERABILITY
+ };
+ int interopFlags = getFlagsFromAllowedIfds(interopAllowedIfds) << 24;
+ mTagInfo.put(TAG_INTEROPERABILITY_INDEX, interopFlags | ExifTag.TYPE_ASCII << 16
+ | ExifTag.SIZE_UNDEFINED);
+ }
+
+ protected static int getAllowedIfdFlagsFromInfo(int info) {
+ return info >>> 24;
+ }
+
+ protected static int[] getAllowedIfdsFromInfo(int info) {
+ int ifdFlags = getAllowedIfdFlagsFromInfo(info);
+ int[] ifds = IfdData.getIfds();
+ ArrayList<Integer> l = new ArrayList<Integer>();
+ for (int i = 0; i < IfdId.TYPE_IFD_COUNT; i++) {
+ int flag = (ifdFlags >> i) & 1;
+ if (flag == 1) {
+ l.add(ifds[i]);
+ }
+ }
+ if (l.size() <= 0) {
+ return null;
+ }
+ int[] ret = new int[l.size()];
+ int j = 0;
+ for (int i : l) {
+ ret[j++] = i;
+ }
+ return ret;
+ }
+
+ protected static boolean isIfdAllowed(int info, int ifd) {
+ int[] ifds = IfdData.getIfds();
+ int ifdFlags = getAllowedIfdFlagsFromInfo(info);
+ for (int i = 0; i < ifds.length; i++) {
+ if (ifd == ifds[i] && ((ifdFlags >> i) & 1) == 1) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ protected static int getFlagsFromAllowedIfds(int[] allowedIfds) {
+ if (allowedIfds == null || allowedIfds.length == 0) {
+ return 0;
+ }
+ int flags = 0;
+ int[] ifds = IfdData.getIfds();
+ for (int i = 0; i < IfdId.TYPE_IFD_COUNT; i++) {
+ for (int j : allowedIfds) {
+ if (ifds[i] == j) {
+ flags |= 1 << i;
+ break;
+ }
+ }
+ }
+ return flags;
+ }
+
+ protected static short getTypeFromInfo(int info) {
+ return (short) ((info >> 16) & 0x0ff);
+ }
+
+ protected static int getComponentCountFromInfo(int info) {
+ return info & 0x0ffff;
+ }
+
+}
diff --git a/src/com/android/gallery3d/exif/ExifInvalidFormatException.java b/src/com/android/gallery3d/exif/ExifInvalidFormatException.java
new file mode 100644
index 0000000..bf923ec
--- /dev/null
+++ b/src/com/android/gallery3d/exif/ExifInvalidFormatException.java
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+public class ExifInvalidFormatException extends Exception {
+ public ExifInvalidFormatException(String meg) {
+ super(meg);
+ }
+}
\ No newline at end of file
diff --git a/src/com/android/gallery3d/exif/ExifModifier.java b/src/com/android/gallery3d/exif/ExifModifier.java
new file mode 100644
index 0000000..f00362b
--- /dev/null
+++ b/src/com/android/gallery3d/exif/ExifModifier.java
@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+import android.util.Log;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.ArrayList;
+import java.util.List;
+
+class ExifModifier {
+ public static final String TAG = "ExifModifier";
+ public static final boolean DEBUG = false;
+ private final ByteBuffer mByteBuffer;
+ private final ExifData mTagToModified;
+ private final List<TagOffset> mTagOffsets = new ArrayList<TagOffset>();
+ private final ExifInterface mInterface;
+ private int mOffsetBase;
+
+ private static class TagOffset {
+ final int mOffset;
+ final ExifTag mTag;
+
+ TagOffset(ExifTag tag, int offset) {
+ mTag = tag;
+ mOffset = offset;
+ }
+ }
+
+ protected ExifModifier(ByteBuffer byteBuffer, ExifInterface iRef) throws IOException,
+ ExifInvalidFormatException {
+ mByteBuffer = byteBuffer;
+ mOffsetBase = byteBuffer.position();
+ mInterface = iRef;
+ InputStream is = null;
+ try {
+ is = new ByteBufferInputStream(byteBuffer);
+ // Do not require any IFD;
+ ExifParser parser = ExifParser.parse(is, mInterface);
+ mTagToModified = new ExifData(parser.getByteOrder());
+ mOffsetBase += parser.getTiffStartPosition();
+ mByteBuffer.position(0);
+ } finally {
+ ExifInterface.closeSilently(is);
+ }
+ }
+
+ protected ByteOrder getByteOrder() {
+ return mTagToModified.getByteOrder();
+ }
+
+ protected boolean commit() throws IOException, ExifInvalidFormatException {
+ InputStream is = null;
+ try {
+ is = new ByteBufferInputStream(mByteBuffer);
+ int flag = 0;
+ IfdData[] ifdDatas = new IfdData[] {
+ mTagToModified.getIfdData(IfdId.TYPE_IFD_0),
+ mTagToModified.getIfdData(IfdId.TYPE_IFD_1),
+ mTagToModified.getIfdData(IfdId.TYPE_IFD_EXIF),
+ mTagToModified.getIfdData(IfdId.TYPE_IFD_INTEROPERABILITY),
+ mTagToModified.getIfdData(IfdId.TYPE_IFD_GPS)
+ };
+
+ if (ifdDatas[IfdId.TYPE_IFD_0] != null) {
+ flag |= ExifParser.OPTION_IFD_0;
+ }
+ if (ifdDatas[IfdId.TYPE_IFD_1] != null) {
+ flag |= ExifParser.OPTION_IFD_1;
+ }
+ if (ifdDatas[IfdId.TYPE_IFD_EXIF] != null) {
+ flag |= ExifParser.OPTION_IFD_EXIF;
+ }
+ if (ifdDatas[IfdId.TYPE_IFD_GPS] != null) {
+ flag |= ExifParser.OPTION_IFD_GPS;
+ }
+ if (ifdDatas[IfdId.TYPE_IFD_INTEROPERABILITY] != null) {
+ flag |= ExifParser.OPTION_IFD_INTEROPERABILITY;
+ }
+
+ ExifParser parser = ExifParser.parse(is, flag, mInterface);
+ int event = parser.next();
+ IfdData currIfd = null;
+ while (event != ExifParser.EVENT_END) {
+ switch (event) {
+ case ExifParser.EVENT_START_OF_IFD:
+ currIfd = ifdDatas[parser.getCurrentIfd()];
+ if (currIfd == null) {
+ parser.skipRemainingTagsInCurrentIfd();
+ }
+ break;
+ case ExifParser.EVENT_NEW_TAG:
+ ExifTag oldTag = parser.getTag();
+ ExifTag newTag = currIfd.getTag(oldTag.getTagId());
+ if (newTag != null) {
+ if (newTag.getComponentCount() != oldTag.getComponentCount()
+ || newTag.getDataType() != oldTag.getDataType()) {
+ return false;
+ } else {
+ mTagOffsets.add(new TagOffset(newTag, oldTag.getOffset()));
+ currIfd.removeTag(oldTag.getTagId());
+ if (currIfd.getTagCount() == 0) {
+ parser.skipRemainingTagsInCurrentIfd();
+ }
+ }
+ }
+ break;
+ }
+ event = parser.next();
+ }
+ for (IfdData ifd : ifdDatas) {
+ if (ifd != null && ifd.getTagCount() > 0) {
+ return false;
+ }
+ }
+ modify();
+ } finally {
+ ExifInterface.closeSilently(is);
+ }
+ return true;
+ }
+
+ private void modify() {
+ mByteBuffer.order(getByteOrder());
+ for (TagOffset tagOffset : mTagOffsets) {
+ writeTagValue(tagOffset.mTag, tagOffset.mOffset);
+ }
+ }
+
+ private void writeTagValue(ExifTag tag, int offset) {
+ if (DEBUG) {
+ Log.v(TAG, "modifying tag to: \n" + tag.toString());
+ Log.v(TAG, "at offset: " + offset);
+ }
+ mByteBuffer.position(offset + mOffsetBase);
+ switch (tag.getDataType()) {
+ case ExifTag.TYPE_ASCII:
+ byte buf[] = tag.getStringByte();
+ if (buf.length == tag.getComponentCount()) {
+ buf[buf.length - 1] = 0;
+ mByteBuffer.put(buf);
+ } else {
+ mByteBuffer.put(buf);
+ mByteBuffer.put((byte) 0);
+ }
+ break;
+ case ExifTag.TYPE_LONG:
+ case ExifTag.TYPE_UNSIGNED_LONG:
+ for (int i = 0, n = tag.getComponentCount(); i < n; i++) {
+ mByteBuffer.putInt((int) tag.getValueAt(i));
+ }
+ break;
+ case ExifTag.TYPE_RATIONAL:
+ case ExifTag.TYPE_UNSIGNED_RATIONAL:
+ for (int i = 0, n = tag.getComponentCount(); i < n; i++) {
+ Rational v = tag.getRational(i);
+ mByteBuffer.putInt((int) v.getNumerator());
+ mByteBuffer.putInt((int) v.getDenominator());
+ }
+ break;
+ case ExifTag.TYPE_UNDEFINED:
+ case ExifTag.TYPE_UNSIGNED_BYTE:
+ buf = new byte[tag.getComponentCount()];
+ tag.getBytes(buf);
+ mByteBuffer.put(buf);
+ break;
+ case ExifTag.TYPE_UNSIGNED_SHORT:
+ for (int i = 0, n = tag.getComponentCount(); i < n; i++) {
+ mByteBuffer.putShort((short) tag.getValueAt(i));
+ }
+ break;
+ }
+ }
+
+ public void modifyTag(ExifTag tag) {
+ mTagToModified.addTag(tag);
+ }
+}
diff --git a/src/com/android/gallery3d/exif/ExifOutputStream.java b/src/com/android/gallery3d/exif/ExifOutputStream.java
new file mode 100644
index 0000000..7ca05f2
--- /dev/null
+++ b/src/com/android/gallery3d/exif/ExifOutputStream.java
@@ -0,0 +1,518 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+import android.util.Log;
+
+import java.io.BufferedOutputStream;
+import java.io.FilterOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.ArrayList;
+
+/**
+ * This class provides a way to replace the Exif header of a JPEG image.
+ * <p>
+ * Below is an example of writing EXIF data into a file
+ *
+ * <pre>
+ * public static void writeExif(byte[] jpeg, ExifData exif, String path) {
+ * OutputStream os = null;
+ * try {
+ * os = new FileOutputStream(path);
+ * ExifOutputStream eos = new ExifOutputStream(os);
+ * // Set the exif header
+ * eos.setExifData(exif);
+ * // Write the original jpeg out, the header will be add into the file.
+ * eos.write(jpeg);
+ * } catch (FileNotFoundException e) {
+ * e.printStackTrace();
+ * } catch (IOException e) {
+ * e.printStackTrace();
+ * } finally {
+ * if (os != null) {
+ * try {
+ * os.close();
+ * } catch (IOException e) {
+ * e.printStackTrace();
+ * }
+ * }
+ * }
+ * }
+ * </pre>
+ */
+class ExifOutputStream extends FilterOutputStream {
+ private static final String TAG = "ExifOutputStream";
+ private static final boolean DEBUG = false;
+ private static final int STREAMBUFFER_SIZE = 0x00010000; // 64Kb
+
+ private static final int STATE_SOI = 0;
+ private static final int STATE_FRAME_HEADER = 1;
+ private static final int STATE_JPEG_DATA = 2;
+
+ private static final int EXIF_HEADER = 0x45786966;
+ private static final short TIFF_HEADER = 0x002A;
+ private static final short TIFF_BIG_ENDIAN = 0x4d4d;
+ private static final short TIFF_LITTLE_ENDIAN = 0x4949;
+ private static final short TAG_SIZE = 12;
+ private static final short TIFF_HEADER_SIZE = 8;
+ private static final int MAX_EXIF_SIZE = 65535;
+
+ private ExifData mExifData;
+ private int mState = STATE_SOI;
+ private int mByteToSkip;
+ private int mByteToCopy;
+ private byte[] mSingleByteArray = new byte[1];
+ private ByteBuffer mBuffer = ByteBuffer.allocate(4);
+ private final ExifInterface mInterface;
+
+ protected ExifOutputStream(OutputStream ou, ExifInterface iRef) {
+ super(new BufferedOutputStream(ou, STREAMBUFFER_SIZE));
+ mInterface = iRef;
+ }
+
+ /**
+ * Sets the ExifData to be written into the JPEG file. Should be called
+ * before writing image data.
+ */
+ protected void setExifData(ExifData exifData) {
+ mExifData = exifData;
+ }
+
+ /**
+ * Gets the Exif header to be written into the JPEF file.
+ */
+ protected ExifData getExifData() {
+ return mExifData;
+ }
+
+ private int requestByteToBuffer(int requestByteCount, byte[] buffer
+ , int offset, int length) {
+ int byteNeeded = requestByteCount - mBuffer.position();
+ int byteToRead = length > byteNeeded ? byteNeeded : length;
+ mBuffer.put(buffer, offset, byteToRead);
+ return byteToRead;
+ }
+
+ /**
+ * Writes the image out. The input data should be a valid JPEG format. After
+ * writing, it's Exif header will be replaced by the given header.
+ */
+ @Override
+ public void write(byte[] buffer, int offset, int length) throws IOException {
+ while ((mByteToSkip > 0 || mByteToCopy > 0 || mState != STATE_JPEG_DATA)
+ && length > 0) {
+ if (mByteToSkip > 0) {
+ int byteToProcess = length > mByteToSkip ? mByteToSkip : length;
+ length -= byteToProcess;
+ mByteToSkip -= byteToProcess;
+ offset += byteToProcess;
+ }
+ if (mByteToCopy > 0) {
+ int byteToProcess = length > mByteToCopy ? mByteToCopy : length;
+ out.write(buffer, offset, byteToProcess);
+ length -= byteToProcess;
+ mByteToCopy -= byteToProcess;
+ offset += byteToProcess;
+ }
+ if (length == 0) {
+ return;
+ }
+ switch (mState) {
+ case STATE_SOI:
+ int byteRead = requestByteToBuffer(2, buffer, offset, length);
+ offset += byteRead;
+ length -= byteRead;
+ if (mBuffer.position() < 2) {
+ return;
+ }
+ mBuffer.rewind();
+ if (mBuffer.getShort() != JpegHeader.SOI) {
+ throw new IOException("Not a valid jpeg image, cannot write exif");
+ }
+ out.write(mBuffer.array(), 0, 2);
+ mState = STATE_FRAME_HEADER;
+ mBuffer.rewind();
+ writeExifData();
+ break;
+ case STATE_FRAME_HEADER:
+ // We ignore the APP1 segment and copy all other segments
+ // until SOF tag.
+ byteRead = requestByteToBuffer(4, buffer, offset, length);
+ offset += byteRead;
+ length -= byteRead;
+ // Check if this image data doesn't contain SOF.
+ if (mBuffer.position() == 2) {
+ short tag = mBuffer.getShort();
+ if (tag == JpegHeader.EOI) {
+ out.write(mBuffer.array(), 0, 2);
+ mBuffer.rewind();
+ }
+ }
+ if (mBuffer.position() < 4) {
+ return;
+ }
+ mBuffer.rewind();
+ short marker = mBuffer.getShort();
+ if (marker == JpegHeader.APP1) {
+ mByteToSkip = (mBuffer.getShort() & 0x0000ffff) - 2;
+ mState = STATE_JPEG_DATA;
+ } else if (!JpegHeader.isSofMarker(marker)) {
+ out.write(mBuffer.array(), 0, 4);
+ mByteToCopy = (mBuffer.getShort() & 0x0000ffff) - 2;
+ } else {
+ out.write(mBuffer.array(), 0, 4);
+ mState = STATE_JPEG_DATA;
+ }
+ mBuffer.rewind();
+ }
+ }
+ if (length > 0) {
+ out.write(buffer, offset, length);
+ }
+ }
+
+ /**
+ * Writes the one bytes out. The input data should be a valid JPEG format.
+ * After writing, it's Exif header will be replaced by the given header.
+ */
+ @Override
+ public void write(int oneByte) throws IOException {
+ mSingleByteArray[0] = (byte) (0xff & oneByte);
+ write(mSingleByteArray);
+ }
+
+ /**
+ * Equivalent to calling write(buffer, 0, buffer.length).
+ */
+ @Override
+ public void write(byte[] buffer) throws IOException {
+ write(buffer, 0, buffer.length);
+ }
+
+ private void writeExifData() throws IOException {
+ if (mExifData == null) {
+ return;
+ }
+ if (DEBUG) {
+ Log.v(TAG, "Writing exif data...");
+ }
+ ArrayList<ExifTag> nullTags = stripNullValueTags(mExifData);
+ createRequiredIfdAndTag();
+ int exifSize = calculateAllOffset();
+ if (exifSize + 8 > MAX_EXIF_SIZE) {
+ throw new IOException("Exif header is too large (>64Kb)");
+ }
+ OrderedDataOutputStream dataOutputStream = new OrderedDataOutputStream(out);
+ dataOutputStream.setByteOrder(ByteOrder.BIG_ENDIAN);
+ dataOutputStream.writeShort(JpegHeader.APP1);
+ dataOutputStream.writeShort((short) (exifSize + 8));
+ dataOutputStream.writeInt(EXIF_HEADER);
+ dataOutputStream.writeShort((short) 0x0000);
+ if (mExifData.getByteOrder() == ByteOrder.BIG_ENDIAN) {
+ dataOutputStream.writeShort(TIFF_BIG_ENDIAN);
+ } else {
+ dataOutputStream.writeShort(TIFF_LITTLE_ENDIAN);
+ }
+ dataOutputStream.setByteOrder(mExifData.getByteOrder());
+ dataOutputStream.writeShort(TIFF_HEADER);
+ dataOutputStream.writeInt(8);
+ writeAllTags(dataOutputStream);
+ writeThumbnail(dataOutputStream);
+ for (ExifTag t : nullTags) {
+ mExifData.addTag(t);
+ }
+ }
+
+ private ArrayList<ExifTag> stripNullValueTags(ExifData data) {
+ ArrayList<ExifTag> nullTags = new ArrayList<ExifTag>();
+ for(ExifTag t : data.getAllTags()) {
+ if (t.getValue() == null && !ExifInterface.isOffsetTag(t.getTagId())) {
+ data.removeTag(t.getTagId(), t.getIfd());
+ nullTags.add(t);
+ }
+ }
+ return nullTags;
+ }
+
+ private void writeThumbnail(OrderedDataOutputStream dataOutputStream) throws IOException {
+ if (mExifData.hasCompressedThumbnail()) {
+ dataOutputStream.write(mExifData.getCompressedThumbnail());
+ } else if (mExifData.hasUncompressedStrip()) {
+ for (int i = 0; i < mExifData.getStripCount(); i++) {
+ dataOutputStream.write(mExifData.getStrip(i));
+ }
+ }
+ }
+
+ private void writeAllTags(OrderedDataOutputStream dataOutputStream) throws IOException {
+ writeIfd(mExifData.getIfdData(IfdId.TYPE_IFD_0), dataOutputStream);
+ writeIfd(mExifData.getIfdData(IfdId.TYPE_IFD_EXIF), dataOutputStream);
+ IfdData interoperabilityIfd = mExifData.getIfdData(IfdId.TYPE_IFD_INTEROPERABILITY);
+ if (interoperabilityIfd != null) {
+ writeIfd(interoperabilityIfd, dataOutputStream);
+ }
+ IfdData gpsIfd = mExifData.getIfdData(IfdId.TYPE_IFD_GPS);
+ if (gpsIfd != null) {
+ writeIfd(gpsIfd, dataOutputStream);
+ }
+ IfdData ifd1 = mExifData.getIfdData(IfdId.TYPE_IFD_1);
+ if (ifd1 != null) {
+ writeIfd(mExifData.getIfdData(IfdId.TYPE_IFD_1), dataOutputStream);
+ }
+ }
+
+ private void writeIfd(IfdData ifd, OrderedDataOutputStream dataOutputStream)
+ throws IOException {
+ ExifTag[] tags = ifd.getAllTags();
+ dataOutputStream.writeShort((short) tags.length);
+ for (ExifTag tag : tags) {
+ dataOutputStream.writeShort(tag.getTagId());
+ dataOutputStream.writeShort(tag.getDataType());
+ dataOutputStream.writeInt(tag.getComponentCount());
+ if (DEBUG) {
+ Log.v(TAG, "\n" + tag.toString());
+ }
+ if (tag.getDataSize() > 4) {
+ dataOutputStream.writeInt(tag.getOffset());
+ } else {
+ ExifOutputStream.writeTagValue(tag, dataOutputStream);
+ for (int i = 0, n = 4 - tag.getDataSize(); i < n; i++) {
+ dataOutputStream.write(0);
+ }
+ }
+ }
+ dataOutputStream.writeInt(ifd.getOffsetToNextIfd());
+ for (ExifTag tag : tags) {
+ if (tag.getDataSize() > 4) {
+ ExifOutputStream.writeTagValue(tag, dataOutputStream);
+ }
+ }
+ }
+
+ private int calculateOffsetOfIfd(IfdData ifd, int offset) {
+ offset += 2 + ifd.getTagCount() * TAG_SIZE + 4;
+ ExifTag[] tags = ifd.getAllTags();
+ for (ExifTag tag : tags) {
+ if (tag.getDataSize() > 4) {
+ tag.setOffset(offset);
+ offset += tag.getDataSize();
+ }
+ }
+ return offset;
+ }
+
+ private void createRequiredIfdAndTag() throws IOException {
+ // IFD0 is required for all file
+ IfdData ifd0 = mExifData.getIfdData(IfdId.TYPE_IFD_0);
+ if (ifd0 == null) {
+ ifd0 = new IfdData(IfdId.TYPE_IFD_0);
+ mExifData.addIfdData(ifd0);
+ }
+ ExifTag exifOffsetTag = mInterface.buildUninitializedTag(ExifInterface.TAG_EXIF_IFD);
+ if (exifOffsetTag == null) {
+ throw new IOException("No definition for crucial exif tag: "
+ + ExifInterface.TAG_EXIF_IFD);
+ }
+ ifd0.setTag(exifOffsetTag);
+
+ // Exif IFD is required for all files.
+ IfdData exifIfd = mExifData.getIfdData(IfdId.TYPE_IFD_EXIF);
+ if (exifIfd == null) {
+ exifIfd = new IfdData(IfdId.TYPE_IFD_EXIF);
+ mExifData.addIfdData(exifIfd);
+ }
+
+ // GPS IFD
+ IfdData gpsIfd = mExifData.getIfdData(IfdId.TYPE_IFD_GPS);
+ if (gpsIfd != null) {
+ ExifTag gpsOffsetTag = mInterface.buildUninitializedTag(ExifInterface.TAG_GPS_IFD);
+ if (gpsOffsetTag == null) {
+ throw new IOException("No definition for crucial exif tag: "
+ + ExifInterface.TAG_GPS_IFD);
+ }
+ ifd0.setTag(gpsOffsetTag);
+ }
+
+ // Interoperability IFD
+ IfdData interIfd = mExifData.getIfdData(IfdId.TYPE_IFD_INTEROPERABILITY);
+ if (interIfd != null) {
+ ExifTag interOffsetTag = mInterface
+ .buildUninitializedTag(ExifInterface.TAG_INTEROPERABILITY_IFD);
+ if (interOffsetTag == null) {
+ throw new IOException("No definition for crucial exif tag: "
+ + ExifInterface.TAG_INTEROPERABILITY_IFD);
+ }
+ exifIfd.setTag(interOffsetTag);
+ }
+
+ IfdData ifd1 = mExifData.getIfdData(IfdId.TYPE_IFD_1);
+
+ // thumbnail
+ if (mExifData.hasCompressedThumbnail()) {
+
+ if (ifd1 == null) {
+ ifd1 = new IfdData(IfdId.TYPE_IFD_1);
+ mExifData.addIfdData(ifd1);
+ }
+
+ ExifTag offsetTag = mInterface
+ .buildUninitializedTag(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT);
+ if (offsetTag == null) {
+ throw new IOException("No definition for crucial exif tag: "
+ + ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT);
+ }
+
+ ifd1.setTag(offsetTag);
+ ExifTag lengthTag = mInterface
+ .buildUninitializedTag(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH);
+ if (lengthTag == null) {
+ throw new IOException("No definition for crucial exif tag: "
+ + ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH);
+ }
+
+ lengthTag.setValue(mExifData.getCompressedThumbnail().length);
+ ifd1.setTag(lengthTag);
+
+ // Get rid of tags for uncompressed if they exist.
+ ifd1.removeTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_STRIP_OFFSETS));
+ ifd1.removeTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_STRIP_BYTE_COUNTS));
+ } else if (mExifData.hasUncompressedStrip()) {
+ if (ifd1 == null) {
+ ifd1 = new IfdData(IfdId.TYPE_IFD_1);
+ mExifData.addIfdData(ifd1);
+ }
+ int stripCount = mExifData.getStripCount();
+ ExifTag offsetTag = mInterface.buildUninitializedTag(ExifInterface.TAG_STRIP_OFFSETS);
+ if (offsetTag == null) {
+ throw new IOException("No definition for crucial exif tag: "
+ + ExifInterface.TAG_STRIP_OFFSETS);
+ }
+ ExifTag lengthTag = mInterface
+ .buildUninitializedTag(ExifInterface.TAG_STRIP_BYTE_COUNTS);
+ if (lengthTag == null) {
+ throw new IOException("No definition for crucial exif tag: "
+ + ExifInterface.TAG_STRIP_BYTE_COUNTS);
+ }
+ long[] lengths = new long[stripCount];
+ for (int i = 0; i < mExifData.getStripCount(); i++) {
+ lengths[i] = mExifData.getStrip(i).length;
+ }
+ lengthTag.setValue(lengths);
+ ifd1.setTag(offsetTag);
+ ifd1.setTag(lengthTag);
+ // Get rid of tags for compressed if they exist.
+ ifd1.removeTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT));
+ ifd1.removeTag(ExifInterface
+ .getTrueTagKey(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH));
+ } else if (ifd1 != null) {
+ // Get rid of offset and length tags if there is no thumbnail.
+ ifd1.removeTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_STRIP_OFFSETS));
+ ifd1.removeTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_STRIP_BYTE_COUNTS));
+ ifd1.removeTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT));
+ ifd1.removeTag(ExifInterface
+ .getTrueTagKey(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH));
+ }
+ }
+
+ private int calculateAllOffset() {
+ int offset = TIFF_HEADER_SIZE;
+ IfdData ifd0 = mExifData.getIfdData(IfdId.TYPE_IFD_0);
+ offset = calculateOffsetOfIfd(ifd0, offset);
+ ifd0.getTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_EXIF_IFD)).setValue(offset);
+
+ IfdData exifIfd = mExifData.getIfdData(IfdId.TYPE_IFD_EXIF);
+ offset = calculateOffsetOfIfd(exifIfd, offset);
+
+ IfdData interIfd = mExifData.getIfdData(IfdId.TYPE_IFD_INTEROPERABILITY);
+ if (interIfd != null) {
+ exifIfd.getTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_INTEROPERABILITY_IFD))
+ .setValue(offset);
+ offset = calculateOffsetOfIfd(interIfd, offset);
+ }
+
+ IfdData gpsIfd = mExifData.getIfdData(IfdId.TYPE_IFD_GPS);
+ if (gpsIfd != null) {
+ ifd0.getTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_GPS_IFD)).setValue(offset);
+ offset = calculateOffsetOfIfd(gpsIfd, offset);
+ }
+
+ IfdData ifd1 = mExifData.getIfdData(IfdId.TYPE_IFD_1);
+ if (ifd1 != null) {
+ ifd0.setOffsetToNextIfd(offset);
+ offset = calculateOffsetOfIfd(ifd1, offset);
+ }
+
+ // thumbnail
+ if (mExifData.hasCompressedThumbnail()) {
+ ifd1.getTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT))
+ .setValue(offset);
+ offset += mExifData.getCompressedThumbnail().length;
+ } else if (mExifData.hasUncompressedStrip()) {
+ int stripCount = mExifData.getStripCount();
+ long[] offsets = new long[stripCount];
+ for (int i = 0; i < mExifData.getStripCount(); i++) {
+ offsets[i] = offset;
+ offset += mExifData.getStrip(i).length;
+ }
+ ifd1.getTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_STRIP_OFFSETS)).setValue(
+ offsets);
+ }
+ return offset;
+ }
+
+ static void writeTagValue(ExifTag tag, OrderedDataOutputStream dataOutputStream)
+ throws IOException {
+ switch (tag.getDataType()) {
+ case ExifTag.TYPE_ASCII:
+ byte buf[] = tag.getStringByte();
+ if (buf.length == tag.getComponentCount()) {
+ buf[buf.length - 1] = 0;
+ dataOutputStream.write(buf);
+ } else {
+ dataOutputStream.write(buf);
+ dataOutputStream.write(0);
+ }
+ break;
+ case ExifTag.TYPE_LONG:
+ case ExifTag.TYPE_UNSIGNED_LONG:
+ for (int i = 0, n = tag.getComponentCount(); i < n; i++) {
+ dataOutputStream.writeInt((int) tag.getValueAt(i));
+ }
+ break;
+ case ExifTag.TYPE_RATIONAL:
+ case ExifTag.TYPE_UNSIGNED_RATIONAL:
+ for (int i = 0, n = tag.getComponentCount(); i < n; i++) {
+ dataOutputStream.writeRational(tag.getRational(i));
+ }
+ break;
+ case ExifTag.TYPE_UNDEFINED:
+ case ExifTag.TYPE_UNSIGNED_BYTE:
+ buf = new byte[tag.getComponentCount()];
+ tag.getBytes(buf);
+ dataOutputStream.write(buf);
+ break;
+ case ExifTag.TYPE_UNSIGNED_SHORT:
+ for (int i = 0, n = tag.getComponentCount(); i < n; i++) {
+ dataOutputStream.writeShort((short) tag.getValueAt(i));
+ }
+ break;
+ }
+ }
+}
diff --git a/src/com/android/gallery3d/exif/ExifParser.java b/src/com/android/gallery3d/exif/ExifParser.java
new file mode 100644
index 0000000..5467d42
--- /dev/null
+++ b/src/com/android/gallery3d/exif/ExifParser.java
@@ -0,0 +1,916 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+import android.util.Log;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteOrder;
+import java.nio.charset.Charset;
+import java.util.Map.Entry;
+import java.util.TreeMap;
+
+/**
+ * This class provides a low-level EXIF parsing API. Given a JPEG format
+ * InputStream, the caller can request which IFD's to read via
+ * {@link #parse(InputStream, int)} with given options.
+ * <p>
+ * Below is an example of getting EXIF data from IFD 0 and EXIF IFD using the
+ * parser.
+ *
+ * <pre>
+ * void parse() {
+ * ExifParser parser = ExifParser.parse(mImageInputStream,
+ * ExifParser.OPTION_IFD_0 | ExifParser.OPTIONS_IFD_EXIF);
+ * int event = parser.next();
+ * while (event != ExifParser.EVENT_END) {
+ * switch (event) {
+ * case ExifParser.EVENT_START_OF_IFD:
+ * break;
+ * case ExifParser.EVENT_NEW_TAG:
+ * ExifTag tag = parser.getTag();
+ * if (!tag.hasValue()) {
+ * parser.registerForTagValue(tag);
+ * } else {
+ * processTag(tag);
+ * }
+ * break;
+ * case ExifParser.EVENT_VALUE_OF_REGISTERED_TAG:
+ * tag = parser.getTag();
+ * if (tag.getDataType() != ExifTag.TYPE_UNDEFINED) {
+ * processTag(tag);
+ * }
+ * break;
+ * }
+ * event = parser.next();
+ * }
+ * }
+ *
+ * void processTag(ExifTag tag) {
+ * // process the tag as you like.
+ * }
+ * </pre>
+ */
+class ExifParser {
+ private static final boolean LOGV = false;
+ private static final String TAG = "ExifParser";
+ /**
+ * When the parser reaches a new IFD area. Call {@link #getCurrentIfd()} to
+ * know which IFD we are in.
+ */
+ public static final int EVENT_START_OF_IFD = 0;
+ /**
+ * When the parser reaches a new tag. Call {@link #getTag()}to get the
+ * corresponding tag.
+ */
+ public static final int EVENT_NEW_TAG = 1;
+ /**
+ * When the parser reaches the value area of tag that is registered by
+ * {@link #registerForTagValue(ExifTag)} previously. Call {@link #getTag()}
+ * to get the corresponding tag.
+ */
+ public static final int EVENT_VALUE_OF_REGISTERED_TAG = 2;
+
+ /**
+ * When the parser reaches the compressed image area.
+ */
+ public static final int EVENT_COMPRESSED_IMAGE = 3;
+ /**
+ * When the parser reaches the uncompressed image strip. Call
+ * {@link #getStripIndex()} to get the index of the strip.
+ *
+ * @see #getStripIndex()
+ * @see #getStripCount()
+ */
+ public static final int EVENT_UNCOMPRESSED_STRIP = 4;
+ /**
+ * When there is nothing more to parse.
+ */
+ public static final int EVENT_END = 5;
+
+ /**
+ * Option bit to request to parse IFD0.
+ */
+ public static final int OPTION_IFD_0 = 1 << 0;
+ /**
+ * Option bit to request to parse IFD1.
+ */
+ public static final int OPTION_IFD_1 = 1 << 1;
+ /**
+ * Option bit to request to parse Exif-IFD.
+ */
+ public static final int OPTION_IFD_EXIF = 1 << 2;
+ /**
+ * Option bit to request to parse GPS-IFD.
+ */
+ public static final int OPTION_IFD_GPS = 1 << 3;
+ /**
+ * Option bit to request to parse Interoperability-IFD.
+ */
+ public static final int OPTION_IFD_INTEROPERABILITY = 1 << 4;
+ /**
+ * Option bit to request to parse thumbnail.
+ */
+ public static final int OPTION_THUMBNAIL = 1 << 5;
+
+ protected static final int EXIF_HEADER = 0x45786966; // EXIF header "Exif"
+ protected static final short EXIF_HEADER_TAIL = (short) 0x0000; // EXIF header in APP1
+
+ // TIFF header
+ protected static final short LITTLE_ENDIAN_TAG = (short) 0x4949; // "II"
+ protected static final short BIG_ENDIAN_TAG = (short) 0x4d4d; // "MM"
+ protected static final short TIFF_HEADER_TAIL = 0x002A;
+
+ protected static final int TAG_SIZE = 12;
+ protected static final int OFFSET_SIZE = 2;
+
+ private static final Charset US_ASCII = Charset.forName("US-ASCII");
+
+ protected static final int DEFAULT_IFD0_OFFSET = 8;
+
+ private final CountedDataInputStream mTiffStream;
+ private final int mOptions;
+ private int mIfdStartOffset = 0;
+ private int mNumOfTagInIfd = 0;
+ private int mIfdType;
+ private ExifTag mTag;
+ private ImageEvent mImageEvent;
+ private int mStripCount;
+ private ExifTag mStripSizeTag;
+ private ExifTag mJpegSizeTag;
+ private boolean mNeedToParseOffsetsInCurrentIfd;
+ private boolean mContainExifData = false;
+ private int mApp1End;
+ private int mOffsetToApp1EndFromSOF = 0;
+ private byte[] mDataAboveIfd0;
+ private int mIfd0Position;
+ private int mTiffStartPosition;
+ private final ExifInterface mInterface;
+
+ private static final short TAG_EXIF_IFD = ExifInterface
+ .getTrueTagKey(ExifInterface.TAG_EXIF_IFD);
+ private static final short TAG_GPS_IFD = ExifInterface.getTrueTagKey(ExifInterface.TAG_GPS_IFD);
+ private static final short TAG_INTEROPERABILITY_IFD = ExifInterface
+ .getTrueTagKey(ExifInterface.TAG_INTEROPERABILITY_IFD);
+ private static final short TAG_JPEG_INTERCHANGE_FORMAT = ExifInterface
+ .getTrueTagKey(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT);
+ private static final short TAG_JPEG_INTERCHANGE_FORMAT_LENGTH = ExifInterface
+ .getTrueTagKey(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH);
+ private static final short TAG_STRIP_OFFSETS = ExifInterface
+ .getTrueTagKey(ExifInterface.TAG_STRIP_OFFSETS);
+ private static final short TAG_STRIP_BYTE_COUNTS = ExifInterface
+ .getTrueTagKey(ExifInterface.TAG_STRIP_BYTE_COUNTS);
+
+ private final TreeMap<Integer, Object> mCorrespondingEvent = new TreeMap<Integer, Object>();
+
+ private boolean isIfdRequested(int ifdType) {
+ switch (ifdType) {
+ case IfdId.TYPE_IFD_0:
+ return (mOptions & OPTION_IFD_0) != 0;
+ case IfdId.TYPE_IFD_1:
+ return (mOptions & OPTION_IFD_1) != 0;
+ case IfdId.TYPE_IFD_EXIF:
+ return (mOptions & OPTION_IFD_EXIF) != 0;
+ case IfdId.TYPE_IFD_GPS:
+ return (mOptions & OPTION_IFD_GPS) != 0;
+ case IfdId.TYPE_IFD_INTEROPERABILITY:
+ return (mOptions & OPTION_IFD_INTEROPERABILITY) != 0;
+ }
+ return false;
+ }
+
+ private boolean isThumbnailRequested() {
+ return (mOptions & OPTION_THUMBNAIL) != 0;
+ }
+
+ private ExifParser(InputStream inputStream, int options, ExifInterface iRef)
+ throws IOException, ExifInvalidFormatException {
+ if (inputStream == null) {
+ throw new IOException("Null argument inputStream to ExifParser");
+ }
+ if (LOGV) {
+ Log.v(TAG, "Reading exif...");
+ }
+ mInterface = iRef;
+ mContainExifData = seekTiffData(inputStream);
+ mTiffStream = new CountedDataInputStream(inputStream);
+ mOptions = options;
+ if (!mContainExifData) {
+ return;
+ }
+
+ parseTiffHeader();
+ long offset = mTiffStream.readUnsignedInt();
+ if (offset > Integer.MAX_VALUE) {
+ throw new ExifInvalidFormatException("Invalid offset " + offset);
+ }
+ mIfd0Position = (int) offset;
+ mIfdType = IfdId.TYPE_IFD_0;
+ if (isIfdRequested(IfdId.TYPE_IFD_0) || needToParseOffsetsInCurrentIfd()) {
+ registerIfd(IfdId.TYPE_IFD_0, offset);
+ if (offset != DEFAULT_IFD0_OFFSET) {
+ mDataAboveIfd0 = new byte[(int) offset - DEFAULT_IFD0_OFFSET];
+ read(mDataAboveIfd0);
+ }
+ }
+ }
+
+ /**
+ * Parses the the given InputStream with the given options
+ *
+ * @exception IOException
+ * @exception ExifInvalidFormatException
+ */
+ protected static ExifParser parse(InputStream inputStream, int options, ExifInterface iRef)
+ throws IOException, ExifInvalidFormatException {
+ return new ExifParser(inputStream, options, iRef);
+ }
+
+ /**
+ * Parses the the given InputStream with default options; that is, every IFD
+ * and thumbnaill will be parsed.
+ *
+ * @exception IOException
+ * @exception ExifInvalidFormatException
+ * @see #parse(InputStream, int)
+ */
+ protected static ExifParser parse(InputStream inputStream, ExifInterface iRef)
+ throws IOException, ExifInvalidFormatException {
+ return new ExifParser(inputStream, OPTION_IFD_0 | OPTION_IFD_1
+ | OPTION_IFD_EXIF | OPTION_IFD_GPS | OPTION_IFD_INTEROPERABILITY
+ | OPTION_THUMBNAIL, iRef);
+ }
+
+ /**
+ * Moves the parser forward and returns the next parsing event
+ *
+ * @exception IOException
+ * @exception ExifInvalidFormatException
+ * @see #EVENT_START_OF_IFD
+ * @see #EVENT_NEW_TAG
+ * @see #EVENT_VALUE_OF_REGISTERED_TAG
+ * @see #EVENT_COMPRESSED_IMAGE
+ * @see #EVENT_UNCOMPRESSED_STRIP
+ * @see #EVENT_END
+ */
+ protected int next() throws IOException, ExifInvalidFormatException {
+ if (!mContainExifData) {
+ return EVENT_END;
+ }
+ int offset = mTiffStream.getReadByteCount();
+ int endOfTags = mIfdStartOffset + OFFSET_SIZE + TAG_SIZE * mNumOfTagInIfd;
+ if (offset < endOfTags) {
+ mTag = readTag();
+ if (mTag == null) {
+ return next();
+ }
+ if (mNeedToParseOffsetsInCurrentIfd) {
+ checkOffsetOrImageTag(mTag);
+ }
+ return EVENT_NEW_TAG;
+ } else if (offset == endOfTags) {
+ // There is a link to ifd1 at the end of ifd0
+ if (mIfdType == IfdId.TYPE_IFD_0) {
+ long ifdOffset = readUnsignedLong();
+ if (isIfdRequested(IfdId.TYPE_IFD_1) || isThumbnailRequested()) {
+ if (ifdOffset != 0) {
+ registerIfd(IfdId.TYPE_IFD_1, ifdOffset);
+ }
+ }
+ } else {
+ int offsetSize = 4;
+ // Some camera models use invalid length of the offset
+ if (mCorrespondingEvent.size() > 0) {
+ offsetSize = mCorrespondingEvent.firstEntry().getKey() -
+ mTiffStream.getReadByteCount();
+ }
+ if (offsetSize < 4) {
+ Log.w(TAG, "Invalid size of link to next IFD: " + offsetSize);
+ } else {
+ long ifdOffset = readUnsignedLong();
+ if (ifdOffset != 0) {
+ Log.w(TAG, "Invalid link to next IFD: " + ifdOffset);
+ }
+ }
+ }
+ }
+ while (mCorrespondingEvent.size() != 0) {
+ Entry<Integer, Object> entry = mCorrespondingEvent.pollFirstEntry();
+ Object event = entry.getValue();
+ try {
+ skipTo(entry.getKey());
+ } catch (IOException e) {
+ Log.w(TAG, "Failed to skip to data at: " + entry.getKey() +
+ " for " + event.getClass().getName() + ", the file may be broken.");
+ continue;
+ }
+ if (event instanceof IfdEvent) {
+ mIfdType = ((IfdEvent) event).ifd;
+ mNumOfTagInIfd = mTiffStream.readUnsignedShort();
+ mIfdStartOffset = entry.getKey();
+
+ if (mNumOfTagInIfd * TAG_SIZE + mIfdStartOffset + OFFSET_SIZE > mApp1End) {
+ Log.w(TAG, "Invalid size of IFD " + mIfdType);
+ return EVENT_END;
+ }
+
+ mNeedToParseOffsetsInCurrentIfd = needToParseOffsetsInCurrentIfd();
+ if (((IfdEvent) event).isRequested) {
+ return EVENT_START_OF_IFD;
+ } else {
+ skipRemainingTagsInCurrentIfd();
+ }
+ } else if (event instanceof ImageEvent) {
+ mImageEvent = (ImageEvent) event;
+ return mImageEvent.type;
+ } else {
+ ExifTagEvent tagEvent = (ExifTagEvent) event;
+ mTag = tagEvent.tag;
+ if (mTag.getDataType() != ExifTag.TYPE_UNDEFINED) {
+ readFullTagValue(mTag);
+ checkOffsetOrImageTag(mTag);
+ }
+ if (tagEvent.isRequested) {
+ return EVENT_VALUE_OF_REGISTERED_TAG;
+ }
+ }
+ }
+ return EVENT_END;
+ }
+
+ /**
+ * Skips the tags area of current IFD, if the parser is not in the tag area,
+ * nothing will happen.
+ *
+ * @throws IOException
+ * @throws ExifInvalidFormatException
+ */
+ protected void skipRemainingTagsInCurrentIfd() throws IOException, ExifInvalidFormatException {
+ int endOfTags = mIfdStartOffset + OFFSET_SIZE + TAG_SIZE * mNumOfTagInIfd;
+ int offset = mTiffStream.getReadByteCount();
+ if (offset > endOfTags) {
+ return;
+ }
+ if (mNeedToParseOffsetsInCurrentIfd) {
+ while (offset < endOfTags) {
+ mTag = readTag();
+ offset += TAG_SIZE;
+ if (mTag == null) {
+ continue;
+ }
+ checkOffsetOrImageTag(mTag);
+ }
+ } else {
+ skipTo(endOfTags);
+ }
+ long ifdOffset = readUnsignedLong();
+ // For ifd0, there is a link to ifd1 in the end of all tags
+ if (mIfdType == IfdId.TYPE_IFD_0
+ && (isIfdRequested(IfdId.TYPE_IFD_1) || isThumbnailRequested())) {
+ if (ifdOffset > 0) {
+ registerIfd(IfdId.TYPE_IFD_1, ifdOffset);
+ }
+ }
+ }
+
+ private boolean needToParseOffsetsInCurrentIfd() {
+ switch (mIfdType) {
+ case IfdId.TYPE_IFD_0:
+ return isIfdRequested(IfdId.TYPE_IFD_EXIF) || isIfdRequested(IfdId.TYPE_IFD_GPS)
+ || isIfdRequested(IfdId.TYPE_IFD_INTEROPERABILITY)
+ || isIfdRequested(IfdId.TYPE_IFD_1);
+ case IfdId.TYPE_IFD_1:
+ return isThumbnailRequested();
+ case IfdId.TYPE_IFD_EXIF:
+ // The offset to interoperability IFD is located in Exif IFD
+ return isIfdRequested(IfdId.TYPE_IFD_INTEROPERABILITY);
+ default:
+ return false;
+ }
+ }
+
+ /**
+ * If {@link #next()} return {@link #EVENT_NEW_TAG} or
+ * {@link #EVENT_VALUE_OF_REGISTERED_TAG}, call this function to get the
+ * corresponding tag.
+ * <p>
+ * For {@link #EVENT_NEW_TAG}, the tag may not contain the value if the size
+ * of the value is greater than 4 bytes. One should call
+ * {@link ExifTag#hasValue()} to check if the tag contains value. If there
+ * is no value,call {@link #registerForTagValue(ExifTag)} to have the parser
+ * emit {@link #EVENT_VALUE_OF_REGISTERED_TAG} when it reaches the area
+ * pointed by the offset.
+ * <p>
+ * When {@link #EVENT_VALUE_OF_REGISTERED_TAG} is emitted, the value of the
+ * tag will have already been read except for tags of undefined type. For
+ * tags of undefined type, call one of the read methods to get the value.
+ *
+ * @see #registerForTagValue(ExifTag)
+ * @see #read(byte[])
+ * @see #read(byte[], int, int)
+ * @see #readLong()
+ * @see #readRational()
+ * @see #readString(int)
+ * @see #readString(int, Charset)
+ */
+ protected ExifTag getTag() {
+ return mTag;
+ }
+
+ /**
+ * Gets number of tags in the current IFD area.
+ */
+ protected int getTagCountInCurrentIfd() {
+ return mNumOfTagInIfd;
+ }
+
+ /**
+ * Gets the ID of current IFD.
+ *
+ * @see IfdId#TYPE_IFD_0
+ * @see IfdId#TYPE_IFD_1
+ * @see IfdId#TYPE_IFD_GPS
+ * @see IfdId#TYPE_IFD_INTEROPERABILITY
+ * @see IfdId#TYPE_IFD_EXIF
+ */
+ protected int getCurrentIfd() {
+ return mIfdType;
+ }
+
+ /**
+ * When receiving {@link #EVENT_UNCOMPRESSED_STRIP}, call this function to
+ * get the index of this strip.
+ *
+ * @see #getStripCount()
+ */
+ protected int getStripIndex() {
+ return mImageEvent.stripIndex;
+ }
+
+ /**
+ * When receiving {@link #EVENT_UNCOMPRESSED_STRIP}, call this function to
+ * get the number of strip data.
+ *
+ * @see #getStripIndex()
+ */
+ protected int getStripCount() {
+ return mStripCount;
+ }
+
+ /**
+ * When receiving {@link #EVENT_UNCOMPRESSED_STRIP}, call this function to
+ * get the strip size.
+ */
+ protected int getStripSize() {
+ if (mStripSizeTag == null)
+ return 0;
+ return (int) mStripSizeTag.getValueAt(0);
+ }
+
+ /**
+ * When receiving {@link #EVENT_COMPRESSED_IMAGE}, call this function to get
+ * the image data size.
+ */
+ protected int getCompressedImageSize() {
+ if (mJpegSizeTag == null) {
+ return 0;
+ }
+ return (int) mJpegSizeTag.getValueAt(0);
+ }
+
+ private void skipTo(int offset) throws IOException {
+ mTiffStream.skipTo(offset);
+ while (!mCorrespondingEvent.isEmpty() && mCorrespondingEvent.firstKey() < offset) {
+ mCorrespondingEvent.pollFirstEntry();
+ }
+ }
+
+ /**
+ * When getting {@link #EVENT_NEW_TAG} in the tag area of IFD, the tag may
+ * not contain the value if the size of the value is greater than 4 bytes.
+ * When the value is not available here, call this method so that the parser
+ * will emit {@link #EVENT_VALUE_OF_REGISTERED_TAG} when it reaches the area
+ * where the value is located.
+ *
+ * @see #EVENT_VALUE_OF_REGISTERED_TAG
+ */
+ protected void registerForTagValue(ExifTag tag) {
+ if (tag.getOffset() >= mTiffStream.getReadByteCount()) {
+ mCorrespondingEvent.put(tag.getOffset(), new ExifTagEvent(tag, true));
+ }
+ }
+
+ private void registerIfd(int ifdType, long offset) {
+ // Cast unsigned int to int since the offset is always smaller
+ // than the size of APP1 (65536)
+ mCorrespondingEvent.put((int) offset, new IfdEvent(ifdType, isIfdRequested(ifdType)));
+ }
+
+ private void registerCompressedImage(long offset) {
+ mCorrespondingEvent.put((int) offset, new ImageEvent(EVENT_COMPRESSED_IMAGE));
+ }
+
+ private void registerUncompressedStrip(int stripIndex, long offset) {
+ mCorrespondingEvent.put((int) offset, new ImageEvent(EVENT_UNCOMPRESSED_STRIP
+ , stripIndex));
+ }
+
+ private ExifTag readTag() throws IOException, ExifInvalidFormatException {
+ short tagId = mTiffStream.readShort();
+ short dataFormat = mTiffStream.readShort();
+ long numOfComp = mTiffStream.readUnsignedInt();
+ if (numOfComp > Integer.MAX_VALUE) {
+ throw new ExifInvalidFormatException(
+ "Number of component is larger then Integer.MAX_VALUE");
+ }
+ // Some invalid image file contains invalid data type. Ignore those tags
+ if (!ExifTag.isValidType(dataFormat)) {
+ Log.w(TAG, String.format("Tag %04x: Invalid data type %d", tagId, dataFormat));
+ mTiffStream.skip(4);
+ return null;
+ }
+ // TODO: handle numOfComp overflow
+ ExifTag tag = new ExifTag(tagId, dataFormat, (int) numOfComp, mIfdType,
+ ((int) numOfComp) != ExifTag.SIZE_UNDEFINED);
+ int dataSize = tag.getDataSize();
+ if (dataSize > 4) {
+ long offset = mTiffStream.readUnsignedInt();
+ if (offset > Integer.MAX_VALUE) {
+ throw new ExifInvalidFormatException(
+ "offset is larger then Integer.MAX_VALUE");
+ }
+ // Some invalid images put some undefined data before IFD0.
+ // Read the data here.
+ if ((offset < mIfd0Position) && (dataFormat == ExifTag.TYPE_UNDEFINED)) {
+ byte[] buf = new byte[(int) numOfComp];
+ System.arraycopy(mDataAboveIfd0, (int) offset - DEFAULT_IFD0_OFFSET,
+ buf, 0, (int) numOfComp);
+ tag.setValue(buf);
+ } else {
+ tag.setOffset((int) offset);
+ }
+ } else {
+ boolean defCount = tag.hasDefinedCount();
+ // Set defined count to 0 so we can add \0 to non-terminated strings
+ tag.setHasDefinedCount(false);
+ // Read value
+ readFullTagValue(tag);
+ tag.setHasDefinedCount(defCount);
+ mTiffStream.skip(4 - dataSize);
+ // Set the offset to the position of value.
+ tag.setOffset(mTiffStream.getReadByteCount() - 4);
+ }
+ return tag;
+ }
+
+ /**
+ * Check the tag, if the tag is one of the offset tag that points to the IFD
+ * or image the caller is interested in, register the IFD or image.
+ */
+ private void checkOffsetOrImageTag(ExifTag tag) {
+ // Some invalid formattd image contains tag with 0 size.
+ if (tag.getComponentCount() == 0) {
+ return;
+ }
+ short tid = tag.getTagId();
+ int ifd = tag.getIfd();
+ if (tid == TAG_EXIF_IFD && checkAllowed(ifd, ExifInterface.TAG_EXIF_IFD)) {
+ if (isIfdRequested(IfdId.TYPE_IFD_EXIF)
+ || isIfdRequested(IfdId.TYPE_IFD_INTEROPERABILITY)) {
+ registerIfd(IfdId.TYPE_IFD_EXIF, tag.getValueAt(0));
+ }
+ } else if (tid == TAG_GPS_IFD && checkAllowed(ifd, ExifInterface.TAG_GPS_IFD)) {
+ if (isIfdRequested(IfdId.TYPE_IFD_GPS)) {
+ registerIfd(IfdId.TYPE_IFD_GPS, tag.getValueAt(0));
+ }
+ } else if (tid == TAG_INTEROPERABILITY_IFD
+ && checkAllowed(ifd, ExifInterface.TAG_INTEROPERABILITY_IFD)) {
+ if (isIfdRequested(IfdId.TYPE_IFD_INTEROPERABILITY)) {
+ registerIfd(IfdId.TYPE_IFD_INTEROPERABILITY, tag.getValueAt(0));
+ }
+ } else if (tid == TAG_JPEG_INTERCHANGE_FORMAT
+ && checkAllowed(ifd, ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT)) {
+ if (isThumbnailRequested()) {
+ registerCompressedImage(tag.getValueAt(0));
+ }
+ } else if (tid == TAG_JPEG_INTERCHANGE_FORMAT_LENGTH
+ && checkAllowed(ifd, ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH)) {
+ if (isThumbnailRequested()) {
+ mJpegSizeTag = tag;
+ }
+ } else if (tid == TAG_STRIP_OFFSETS && checkAllowed(ifd, ExifInterface.TAG_STRIP_OFFSETS)) {
+ if (isThumbnailRequested()) {
+ if (tag.hasValue()) {
+ for (int i = 0; i < tag.getComponentCount(); i++) {
+ if (tag.getDataType() == ExifTag.TYPE_UNSIGNED_SHORT) {
+ registerUncompressedStrip(i, tag.getValueAt(i));
+ } else {
+ registerUncompressedStrip(i, tag.getValueAt(i));
+ }
+ }
+ } else {
+ mCorrespondingEvent.put(tag.getOffset(), new ExifTagEvent(tag, false));
+ }
+ }
+ } else if (tid == TAG_STRIP_BYTE_COUNTS
+ && checkAllowed(ifd, ExifInterface.TAG_STRIP_BYTE_COUNTS)
+ &&isThumbnailRequested() && tag.hasValue()) {
+ mStripSizeTag = tag;
+ }
+ }
+
+ private boolean checkAllowed(int ifd, int tagId) {
+ int info = mInterface.getTagInfo().get(tagId);
+ if (info == ExifInterface.DEFINITION_NULL) {
+ return false;
+ }
+ return ExifInterface.isIfdAllowed(info, ifd);
+ }
+
+ protected void readFullTagValue(ExifTag tag) throws IOException {
+ // Some invalid images contains tags with wrong size, check it here
+ short type = tag.getDataType();
+ if (type == ExifTag.TYPE_ASCII || type == ExifTag.TYPE_UNDEFINED ||
+ type == ExifTag.TYPE_UNSIGNED_BYTE) {
+ int size = tag.getComponentCount();
+ if (mCorrespondingEvent.size() > 0) {
+ if (mCorrespondingEvent.firstEntry().getKey() < mTiffStream.getReadByteCount()
+ + size) {
+ Object event = mCorrespondingEvent.firstEntry().getValue();
+ if (event instanceof ImageEvent) {
+ // Tag value overlaps thumbnail, ignore thumbnail.
+ Log.w(TAG, "Thumbnail overlaps value for tag: \n" + tag.toString());
+ Entry<Integer, Object> entry = mCorrespondingEvent.pollFirstEntry();
+ Log.w(TAG, "Invalid thumbnail offset: " + entry.getKey());
+ } else {
+ // Tag value overlaps another tag, shorten count
+ if (event instanceof IfdEvent) {
+ Log.w(TAG, "Ifd " + ((IfdEvent) event).ifd
+ + " overlaps value for tag: \n" + tag.toString());
+ } else if (event instanceof ExifTagEvent) {
+ Log.w(TAG, "Tag value for tag: \n"
+ + ((ExifTagEvent) event).tag.toString()
+ + " overlaps value for tag: \n" + tag.toString());
+ }
+ size = mCorrespondingEvent.firstEntry().getKey()
+ - mTiffStream.getReadByteCount();
+ Log.w(TAG, "Invalid size of tag: \n" + tag.toString()
+ + " setting count to: " + size);
+ tag.forceSetComponentCount(size);
+ }
+ }
+ }
+ }
+ switch (tag.getDataType()) {
+ case ExifTag.TYPE_UNSIGNED_BYTE:
+ case ExifTag.TYPE_UNDEFINED: {
+ byte buf[] = new byte[tag.getComponentCount()];
+ read(buf);
+ tag.setValue(buf);
+ }
+ break;
+ case ExifTag.TYPE_ASCII:
+ tag.setValue(readString(tag.getComponentCount()));
+ break;
+ case ExifTag.TYPE_UNSIGNED_LONG: {
+ long value[] = new long[tag.getComponentCount()];
+ for (int i = 0, n = value.length; i < n; i++) {
+ value[i] = readUnsignedLong();
+ }
+ tag.setValue(value);
+ }
+ break;
+ case ExifTag.TYPE_UNSIGNED_RATIONAL: {
+ Rational value[] = new Rational[tag.getComponentCount()];
+ for (int i = 0, n = value.length; i < n; i++) {
+ value[i] = readUnsignedRational();
+ }
+ tag.setValue(value);
+ }
+ break;
+ case ExifTag.TYPE_UNSIGNED_SHORT: {
+ int value[] = new int[tag.getComponentCount()];
+ for (int i = 0, n = value.length; i < n; i++) {
+ value[i] = readUnsignedShort();
+ }
+ tag.setValue(value);
+ }
+ break;
+ case ExifTag.TYPE_LONG: {
+ int value[] = new int[tag.getComponentCount()];
+ for (int i = 0, n = value.length; i < n; i++) {
+ value[i] = readLong();
+ }
+ tag.setValue(value);
+ }
+ break;
+ case ExifTag.TYPE_RATIONAL: {
+ Rational value[] = new Rational[tag.getComponentCount()];
+ for (int i = 0, n = value.length; i < n; i++) {
+ value[i] = readRational();
+ }
+ tag.setValue(value);
+ }
+ break;
+ }
+ if (LOGV) {
+ Log.v(TAG, "\n" + tag.toString());
+ }
+ }
+
+ private void parseTiffHeader() throws IOException,
+ ExifInvalidFormatException {
+ short byteOrder = mTiffStream.readShort();
+ if (LITTLE_ENDIAN_TAG == byteOrder) {
+ mTiffStream.setByteOrder(ByteOrder.LITTLE_ENDIAN);
+ } else if (BIG_ENDIAN_TAG == byteOrder) {
+ mTiffStream.setByteOrder(ByteOrder.BIG_ENDIAN);
+ } else {
+ throw new ExifInvalidFormatException("Invalid TIFF header");
+ }
+
+ if (mTiffStream.readShort() != TIFF_HEADER_TAIL) {
+ throw new ExifInvalidFormatException("Invalid TIFF header");
+ }
+ }
+
+ private boolean seekTiffData(InputStream inputStream) throws IOException,
+ ExifInvalidFormatException {
+ CountedDataInputStream dataStream = new CountedDataInputStream(inputStream);
+ if (dataStream.readShort() != JpegHeader.SOI) {
+ throw new ExifInvalidFormatException("Invalid JPEG format");
+ }
+
+ short marker = dataStream.readShort();
+ while (marker != JpegHeader.EOI
+ && !JpegHeader.isSofMarker(marker)) {
+ int length = dataStream.readUnsignedShort();
+ // Some invalid formatted image contains multiple APP1,
+ // try to find the one with Exif data.
+ if (marker == JpegHeader.APP1) {
+ int header = 0;
+ short headerTail = 0;
+ if (length >= 8) {
+ header = dataStream.readInt();
+ headerTail = dataStream.readShort();
+ length -= 6;
+ if (header == EXIF_HEADER && headerTail == EXIF_HEADER_TAIL) {
+ mTiffStartPosition = dataStream.getReadByteCount();
+ mApp1End = length;
+ mOffsetToApp1EndFromSOF = mTiffStartPosition + mApp1End;
+ return true;
+ }
+ }
+ }
+ if (length < 2 || (length - 2) != dataStream.skip(length - 2)) {
+ Log.w(TAG, "Invalid JPEG format.");
+ return false;
+ }
+ marker = dataStream.readShort();
+ }
+ return false;
+ }
+
+ protected int getOffsetToExifEndFromSOF() {
+ return mOffsetToApp1EndFromSOF;
+ }
+
+ protected int getTiffStartPosition() {
+ return mTiffStartPosition;
+ }
+
+ /**
+ * Reads bytes from the InputStream.
+ */
+ protected int read(byte[] buffer, int offset, int length) throws IOException {
+ return mTiffStream.read(buffer, offset, length);
+ }
+
+ /**
+ * Equivalent to read(buffer, 0, buffer.length).
+ */
+ protected int read(byte[] buffer) throws IOException {
+ return mTiffStream.read(buffer);
+ }
+
+ /**
+ * Reads a String from the InputStream with US-ASCII charset. The parser
+ * will read n bytes and convert it to ascii string. This is used for
+ * reading values of type {@link ExifTag#TYPE_ASCII}.
+ */
+ protected String readString(int n) throws IOException {
+ return readString(n, US_ASCII);
+ }
+
+ /**
+ * Reads a String from the InputStream with the given charset. The parser
+ * will read n bytes and convert it to string. This is used for reading
+ * values of type {@link ExifTag#TYPE_ASCII}.
+ */
+ protected String readString(int n, Charset charset) throws IOException {
+ if (n > 0) {
+ return mTiffStream.readString(n, charset);
+ } else {
+ return "";
+ }
+ }
+
+ /**
+ * Reads value of type {@link ExifTag#TYPE_UNSIGNED_SHORT} from the
+ * InputStream.
+ */
+ protected int readUnsignedShort() throws IOException {
+ return mTiffStream.readShort() & 0xffff;
+ }
+
+ /**
+ * Reads value of type {@link ExifTag#TYPE_UNSIGNED_LONG} from the
+ * InputStream.
+ */
+ protected long readUnsignedLong() throws IOException {
+ return readLong() & 0xffffffffL;
+ }
+
+ /**
+ * Reads value of type {@link ExifTag#TYPE_UNSIGNED_RATIONAL} from the
+ * InputStream.
+ */
+ protected Rational readUnsignedRational() throws IOException {
+ long nomi = readUnsignedLong();
+ long denomi = readUnsignedLong();
+ return new Rational(nomi, denomi);
+ }
+
+ /**
+ * Reads value of type {@link ExifTag#TYPE_LONG} from the InputStream.
+ */
+ protected int readLong() throws IOException {
+ return mTiffStream.readInt();
+ }
+
+ /**
+ * Reads value of type {@link ExifTag#TYPE_RATIONAL} from the InputStream.
+ */
+ protected Rational readRational() throws IOException {
+ int nomi = readLong();
+ int denomi = readLong();
+ return new Rational(nomi, denomi);
+ }
+
+ private static class ImageEvent {
+ int stripIndex;
+ int type;
+
+ ImageEvent(int type) {
+ this.stripIndex = 0;
+ this.type = type;
+ }
+
+ ImageEvent(int type, int stripIndex) {
+ this.type = type;
+ this.stripIndex = stripIndex;
+ }
+ }
+
+ private static class IfdEvent {
+ int ifd;
+ boolean isRequested;
+
+ IfdEvent(int ifd, boolean isInterestedIfd) {
+ this.ifd = ifd;
+ this.isRequested = isInterestedIfd;
+ }
+ }
+
+ private static class ExifTagEvent {
+ ExifTag tag;
+ boolean isRequested;
+
+ ExifTagEvent(ExifTag tag, boolean isRequireByUser) {
+ this.tag = tag;
+ this.isRequested = isRequireByUser;
+ }
+ }
+
+ /**
+ * Gets the byte order of the current InputStream.
+ */
+ protected ByteOrder getByteOrder() {
+ return mTiffStream.getByteOrder();
+ }
+}
diff --git a/src/com/android/gallery3d/exif/ExifReader.java b/src/com/android/gallery3d/exif/ExifReader.java
new file mode 100644
index 0000000..68e972f
--- /dev/null
+++ b/src/com/android/gallery3d/exif/ExifReader.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+import android.util.Log;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * This class reads the EXIF header of a JPEG file and stores it in
+ * {@link ExifData}.
+ */
+class ExifReader {
+ private static final String TAG = "ExifReader";
+
+ private final ExifInterface mInterface;
+
+ ExifReader(ExifInterface iRef) {
+ mInterface = iRef;
+ }
+
+ /**
+ * Parses the inputStream and and returns the EXIF data in an
+ * {@link ExifData}.
+ *
+ * @throws ExifInvalidFormatException
+ * @throws IOException
+ */
+ protected ExifData read(InputStream inputStream) throws ExifInvalidFormatException,
+ IOException {
+ ExifParser parser = ExifParser.parse(inputStream, mInterface);
+ ExifData exifData = new ExifData(parser.getByteOrder());
+ ExifTag tag = null;
+
+ int event = parser.next();
+ while (event != ExifParser.EVENT_END) {
+ switch (event) {
+ case ExifParser.EVENT_START_OF_IFD:
+ exifData.addIfdData(new IfdData(parser.getCurrentIfd()));
+ break;
+ case ExifParser.EVENT_NEW_TAG:
+ tag = parser.getTag();
+ if (!tag.hasValue()) {
+ parser.registerForTagValue(tag);
+ } else {
+ exifData.getIfdData(tag.getIfd()).setTag(tag);
+ }
+ break;
+ case ExifParser.EVENT_VALUE_OF_REGISTERED_TAG:
+ tag = parser.getTag();
+ if (tag.getDataType() == ExifTag.TYPE_UNDEFINED) {
+ parser.readFullTagValue(tag);
+ }
+ exifData.getIfdData(tag.getIfd()).setTag(tag);
+ break;
+ case ExifParser.EVENT_COMPRESSED_IMAGE:
+ byte buf[] = new byte[parser.getCompressedImageSize()];
+ if (buf.length == parser.read(buf)) {
+ exifData.setCompressedThumbnail(buf);
+ } else {
+ Log.w(TAG, "Failed to read the compressed thumbnail");
+ }
+ break;
+ case ExifParser.EVENT_UNCOMPRESSED_STRIP:
+ buf = new byte[parser.getStripSize()];
+ if (buf.length == parser.read(buf)) {
+ exifData.setStripBytes(parser.getStripIndex(), buf);
+ } else {
+ Log.w(TAG, "Failed to read the strip bytes");
+ }
+ break;
+ }
+ event = parser.next();
+ }
+ return exifData;
+ }
+}
diff --git a/src/com/android/gallery3d/exif/ExifTag.java b/src/com/android/gallery3d/exif/ExifTag.java
new file mode 100644
index 0000000..b8b3872
--- /dev/null
+++ b/src/com/android/gallery3d/exif/ExifTag.java
@@ -0,0 +1,1008 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+import java.nio.charset.Charset;
+import java.text.SimpleDateFormat;
+import java.util.Arrays;
+import java.util.Date;
+
+/**
+ * This class stores information of an EXIF tag. For more information about
+ * defined EXIF tags, please read the Jeita EXIF 2.2 standard. Tags should be
+ * instantiated using {@link ExifInterface#buildTag}.
+ *
+ * @see ExifInterface
+ */
+public class ExifTag {
+ /**
+ * The BYTE type in the EXIF standard. An 8-bit unsigned integer.
+ */
+ public static final short TYPE_UNSIGNED_BYTE = 1;
+ /**
+ * The ASCII type in the EXIF standard. An 8-bit byte containing one 7-bit
+ * ASCII code. The final byte is terminated with NULL.
+ */
+ public static final short TYPE_ASCII = 2;
+ /**
+ * The SHORT type in the EXIF standard. A 16-bit (2-byte) unsigned integer
+ */
+ public static final short TYPE_UNSIGNED_SHORT = 3;
+ /**
+ * The LONG type in the EXIF standard. A 32-bit (4-byte) unsigned integer
+ */
+ public static final short TYPE_UNSIGNED_LONG = 4;
+ /**
+ * The RATIONAL type of EXIF standard. It consists of two LONGs. The first
+ * one is the numerator and the second one expresses the denominator.
+ */
+ public static final short TYPE_UNSIGNED_RATIONAL = 5;
+ /**
+ * The UNDEFINED type in the EXIF standard. An 8-bit byte that can take any
+ * value depending on the field definition.
+ */
+ public static final short TYPE_UNDEFINED = 7;
+ /**
+ * The SLONG type in the EXIF standard. A 32-bit (4-byte) signed integer
+ * (2's complement notation).
+ */
+ public static final short TYPE_LONG = 9;
+ /**
+ * The SRATIONAL type of EXIF standard. It consists of two SLONGs. The first
+ * one is the numerator and the second one is the denominator.
+ */
+ public static final short TYPE_RATIONAL = 10;
+
+ private static Charset US_ASCII = Charset.forName("US-ASCII");
+ private static final int TYPE_TO_SIZE_MAP[] = new int[11];
+ private static final int UNSIGNED_SHORT_MAX = 65535;
+ private static final long UNSIGNED_LONG_MAX = 4294967295L;
+ private static final long LONG_MAX = Integer.MAX_VALUE;
+ private static final long LONG_MIN = Integer.MIN_VALUE;
+
+ static {
+ TYPE_TO_SIZE_MAP[TYPE_UNSIGNED_BYTE] = 1;
+ TYPE_TO_SIZE_MAP[TYPE_ASCII] = 1;
+ TYPE_TO_SIZE_MAP[TYPE_UNSIGNED_SHORT] = 2;
+ TYPE_TO_SIZE_MAP[TYPE_UNSIGNED_LONG] = 4;
+ TYPE_TO_SIZE_MAP[TYPE_UNSIGNED_RATIONAL] = 8;
+ TYPE_TO_SIZE_MAP[TYPE_UNDEFINED] = 1;
+ TYPE_TO_SIZE_MAP[TYPE_LONG] = 4;
+ TYPE_TO_SIZE_MAP[TYPE_RATIONAL] = 8;
+ }
+
+ static final int SIZE_UNDEFINED = 0;
+
+ // Exif TagId
+ private final short mTagId;
+ // Exif Tag Type
+ private final short mDataType;
+ // If tag has defined count
+ private boolean mHasDefinedDefaultComponentCount;
+ // Actual data count in tag (should be number of elements in value array)
+ private int mComponentCountActual;
+ // The ifd that this tag should be put in
+ private int mIfd;
+ // The value (array of elements of type Tag Type)
+ private Object mValue;
+ // Value offset in exif header.
+ private int mOffset;
+
+ private static final SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("yyyy:MM:dd kk:mm:ss");
+
+ /**
+ * Returns true if the given IFD is a valid IFD.
+ */
+ public static boolean isValidIfd(int ifdId) {
+ return ifdId == IfdId.TYPE_IFD_0 || ifdId == IfdId.TYPE_IFD_1
+ || ifdId == IfdId.TYPE_IFD_EXIF || ifdId == IfdId.TYPE_IFD_INTEROPERABILITY
+ || ifdId == IfdId.TYPE_IFD_GPS;
+ }
+
+ /**
+ * Returns true if a given type is a valid tag type.
+ */
+ public static boolean isValidType(short type) {
+ return type == TYPE_UNSIGNED_BYTE || type == TYPE_ASCII ||
+ type == TYPE_UNSIGNED_SHORT || type == TYPE_UNSIGNED_LONG ||
+ type == TYPE_UNSIGNED_RATIONAL || type == TYPE_UNDEFINED ||
+ type == TYPE_LONG || type == TYPE_RATIONAL;
+ }
+
+ // Use builtTag in ExifInterface instead of constructor.
+ ExifTag(short tagId, short type, int componentCount, int ifd,
+ boolean hasDefinedComponentCount) {
+ mTagId = tagId;
+ mDataType = type;
+ mComponentCountActual = componentCount;
+ mHasDefinedDefaultComponentCount = hasDefinedComponentCount;
+ mIfd = ifd;
+ mValue = null;
+ }
+
+ /**
+ * Gets the element size of the given data type in bytes.
+ *
+ * @see #TYPE_ASCII
+ * @see #TYPE_LONG
+ * @see #TYPE_RATIONAL
+ * @see #TYPE_UNDEFINED
+ * @see #TYPE_UNSIGNED_BYTE
+ * @see #TYPE_UNSIGNED_LONG
+ * @see #TYPE_UNSIGNED_RATIONAL
+ * @see #TYPE_UNSIGNED_SHORT
+ */
+ public static int getElementSize(short type) {
+ return TYPE_TO_SIZE_MAP[type];
+ }
+
+ /**
+ * Returns the ID of the IFD this tag belongs to.
+ *
+ * @see IfdId#TYPE_IFD_0
+ * @see IfdId#TYPE_IFD_1
+ * @see IfdId#TYPE_IFD_EXIF
+ * @see IfdId#TYPE_IFD_GPS
+ * @see IfdId#TYPE_IFD_INTEROPERABILITY
+ */
+ public int getIfd() {
+ return mIfd;
+ }
+
+ protected void setIfd(int ifdId) {
+ mIfd = ifdId;
+ }
+
+ /**
+ * Gets the TID of this tag.
+ */
+ public short getTagId() {
+ return mTagId;
+ }
+
+ /**
+ * Gets the data type of this tag
+ *
+ * @see #TYPE_ASCII
+ * @see #TYPE_LONG
+ * @see #TYPE_RATIONAL
+ * @see #TYPE_UNDEFINED
+ * @see #TYPE_UNSIGNED_BYTE
+ * @see #TYPE_UNSIGNED_LONG
+ * @see #TYPE_UNSIGNED_RATIONAL
+ * @see #TYPE_UNSIGNED_SHORT
+ */
+ public short getDataType() {
+ return mDataType;
+ }
+
+ /**
+ * Gets the total data size in bytes of the value of this tag.
+ */
+ public int getDataSize() {
+ return getComponentCount() * getElementSize(getDataType());
+ }
+
+ /**
+ * Gets the component count of this tag.
+ */
+
+ // TODO: fix integer overflows with this
+ public int getComponentCount() {
+ return mComponentCountActual;
+ }
+
+ /**
+ * Sets the component count of this tag. Call this function before
+ * setValue() if the length of value does not match the component count.
+ */
+ protected void forceSetComponentCount(int count) {
+ mComponentCountActual = count;
+ }
+
+ /**
+ * Returns true if this ExifTag contains value; otherwise, this tag will
+ * contain an offset value that is determined when the tag is written.
+ */
+ public boolean hasValue() {
+ return mValue != null;
+ }
+
+ /**
+ * Sets integer values into this tag. This method should be used for tags of
+ * type {@link #TYPE_UNSIGNED_SHORT}. This method will fail if:
+ * <ul>
+ * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_SHORT},
+ * {@link #TYPE_UNSIGNED_LONG}, or {@link #TYPE_LONG}.</li>
+ * <li>The value overflows.</li>
+ * <li>The value.length does NOT match the component count in the definition
+ * for this tag.</li>
+ * </ul>
+ */
+ public boolean setValue(int[] value) {
+ if (checkBadComponentCount(value.length)) {
+ return false;
+ }
+ if (mDataType != TYPE_UNSIGNED_SHORT && mDataType != TYPE_LONG &&
+ mDataType != TYPE_UNSIGNED_LONG) {
+ return false;
+ }
+ if (mDataType == TYPE_UNSIGNED_SHORT && checkOverflowForUnsignedShort(value)) {
+ return false;
+ } else if (mDataType == TYPE_UNSIGNED_LONG && checkOverflowForUnsignedLong(value)) {
+ return false;
+ }
+
+ long[] data = new long[value.length];
+ for (int i = 0; i < value.length; i++) {
+ data[i] = value[i];
+ }
+ mValue = data;
+ mComponentCountActual = value.length;
+ return true;
+ }
+
+ /**
+ * Sets integer value into this tag. This method should be used for tags of
+ * type {@link #TYPE_UNSIGNED_SHORT}, or {@link #TYPE_LONG}. This method
+ * will fail if:
+ * <ul>
+ * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_SHORT},
+ * {@link #TYPE_UNSIGNED_LONG}, or {@link #TYPE_LONG}.</li>
+ * <li>The value overflows.</li>
+ * <li>The component count in the definition of this tag is not 1.</li>
+ * </ul>
+ */
+ public boolean setValue(int value) {
+ return setValue(new int[] {
+ value
+ });
+ }
+
+ /**
+ * Sets long values into this tag. This method should be used for tags of
+ * type {@link #TYPE_UNSIGNED_LONG}. This method will fail if:
+ * <ul>
+ * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_LONG}.</li>
+ * <li>The value overflows.</li>
+ * <li>The value.length does NOT match the component count in the definition
+ * for this tag.</li>
+ * </ul>
+ */
+ public boolean setValue(long[] value) {
+ if (checkBadComponentCount(value.length) || mDataType != TYPE_UNSIGNED_LONG) {
+ return false;
+ }
+ if (checkOverflowForUnsignedLong(value)) {
+ return false;
+ }
+ mValue = value;
+ mComponentCountActual = value.length;
+ return true;
+ }
+
+ /**
+ * Sets long values into this tag. This method should be used for tags of
+ * type {@link #TYPE_UNSIGNED_LONG}. This method will fail if:
+ * <ul>
+ * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_LONG}.</li>
+ * <li>The value overflows.</li>
+ * <li>The component count in the definition for this tag is not 1.</li>
+ * </ul>
+ */
+ public boolean setValue(long value) {
+ return setValue(new long[] {
+ value
+ });
+ }
+
+ /**
+ * Sets a string value into this tag. This method should be used for tags of
+ * type {@link #TYPE_ASCII}. The string is converted to an ASCII string.
+ * Characters that cannot be converted are replaced with '?'. The length of
+ * the string must be equal to either (component count -1) or (component
+ * count). The final byte will be set to the string null terminator '\0',
+ * overwriting the last character in the string if the value.length is equal
+ * to the component count. This method will fail if:
+ * <ul>
+ * <li>The data type is not {@link #TYPE_ASCII} or {@link #TYPE_UNDEFINED}.</li>
+ * <li>The length of the string is not equal to (component count -1) or
+ * (component count) in the definition for this tag.</li>
+ * </ul>
+ */
+ public boolean setValue(String value) {
+ if (mDataType != TYPE_ASCII && mDataType != TYPE_UNDEFINED) {
+ return false;
+ }
+
+ byte[] buf = value.getBytes(US_ASCII);
+ byte[] finalBuf = buf;
+ if (buf.length > 0) {
+ finalBuf = (buf[buf.length - 1] == 0 || mDataType == TYPE_UNDEFINED) ? buf : Arrays
+ .copyOf(buf, buf.length + 1);
+ } else if (mDataType == TYPE_ASCII && mComponentCountActual == 1) {
+ finalBuf = new byte[] { 0 };
+ }
+ int count = finalBuf.length;
+ if (checkBadComponentCount(count)) {
+ return false;
+ }
+ mComponentCountActual = count;
+ mValue = finalBuf;
+ return true;
+ }
+
+ /**
+ * Sets Rational values into this tag. This method should be used for tags
+ * of type {@link #TYPE_UNSIGNED_RATIONAL}, or {@link #TYPE_RATIONAL}. This
+ * method will fail if:
+ * <ul>
+ * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_RATIONAL}
+ * or {@link #TYPE_RATIONAL}.</li>
+ * <li>The value overflows.</li>
+ * <li>The value.length does NOT match the component count in the definition
+ * for this tag.</li>
+ * </ul>
+ *
+ * @see Rational
+ */
+ public boolean setValue(Rational[] value) {
+ if (checkBadComponentCount(value.length)) {
+ return false;
+ }
+ if (mDataType != TYPE_UNSIGNED_RATIONAL && mDataType != TYPE_RATIONAL) {
+ return false;
+ }
+ if (mDataType == TYPE_UNSIGNED_RATIONAL && checkOverflowForUnsignedRational(value)) {
+ return false;
+ } else if (mDataType == TYPE_RATIONAL && checkOverflowForRational(value)) {
+ return false;
+ }
+
+ mValue = value;
+ mComponentCountActual = value.length;
+ return true;
+ }
+
+ /**
+ * Sets a Rational value into this tag. This method should be used for tags
+ * of type {@link #TYPE_UNSIGNED_RATIONAL}, or {@link #TYPE_RATIONAL}. This
+ * method will fail if:
+ * <ul>
+ * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_RATIONAL}
+ * or {@link #TYPE_RATIONAL}.</li>
+ * <li>The value overflows.</li>
+ * <li>The component count in the definition for this tag is not 1.</li>
+ * </ul>
+ *
+ * @see Rational
+ */
+ public boolean setValue(Rational value) {
+ return setValue(new Rational[] {
+ value
+ });
+ }
+
+ /**
+ * Sets byte values into this tag. This method should be used for tags of
+ * type {@link #TYPE_UNSIGNED_BYTE} or {@link #TYPE_UNDEFINED}. This method
+ * will fail if:
+ * <ul>
+ * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_BYTE} or
+ * {@link #TYPE_UNDEFINED} .</li>
+ * <li>The length does NOT match the component count in the definition for
+ * this tag.</li>
+ * </ul>
+ */
+ public boolean setValue(byte[] value, int offset, int length) {
+ if (checkBadComponentCount(length)) {
+ return false;
+ }
+ if (mDataType != TYPE_UNSIGNED_BYTE && mDataType != TYPE_UNDEFINED) {
+ return false;
+ }
+ mValue = new byte[length];
+ System.arraycopy(value, offset, mValue, 0, length);
+ mComponentCountActual = length;
+ return true;
+ }
+
+ /**
+ * Equivalent to setValue(value, 0, value.length).
+ */
+ public boolean setValue(byte[] value) {
+ return setValue(value, 0, value.length);
+ }
+
+ /**
+ * Sets byte value into this tag. This method should be used for tags of
+ * type {@link #TYPE_UNSIGNED_BYTE} or {@link #TYPE_UNDEFINED}. This method
+ * will fail if:
+ * <ul>
+ * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_BYTE} or
+ * {@link #TYPE_UNDEFINED} .</li>
+ * <li>The component count in the definition for this tag is not 1.</li>
+ * </ul>
+ */
+ public boolean setValue(byte value) {
+ return setValue(new byte[] {
+ value
+ });
+ }
+
+ /**
+ * Sets the value for this tag using an appropriate setValue method for the
+ * given object. This method will fail if:
+ * <ul>
+ * <li>The corresponding setValue method for the class of the object passed
+ * in would fail.</li>
+ * <li>There is no obvious way to cast the object passed in into an EXIF tag
+ * type.</li>
+ * </ul>
+ */
+ public boolean setValue(Object obj) {
+ if (obj == null) {
+ return false;
+ } else if (obj instanceof Short) {
+ return setValue(((Short) obj).shortValue() & 0x0ffff);
+ } else if (obj instanceof String) {
+ return setValue((String) obj);
+ } else if (obj instanceof int[]) {
+ return setValue((int[]) obj);
+ } else if (obj instanceof long[]) {
+ return setValue((long[]) obj);
+ } else if (obj instanceof Rational) {
+ return setValue((Rational) obj);
+ } else if (obj instanceof Rational[]) {
+ return setValue((Rational[]) obj);
+ } else if (obj instanceof byte[]) {
+ return setValue((byte[]) obj);
+ } else if (obj instanceof Integer) {
+ return setValue(((Integer) obj).intValue());
+ } else if (obj instanceof Long) {
+ return setValue(((Long) obj).longValue());
+ } else if (obj instanceof Byte) {
+ return setValue(((Byte) obj).byteValue());
+ } else if (obj instanceof Short[]) {
+ // Nulls in this array are treated as zeroes.
+ Short[] arr = (Short[]) obj;
+ int[] fin = new int[arr.length];
+ for (int i = 0; i < arr.length; i++) {
+ fin[i] = (arr[i] == null) ? 0 : arr[i].shortValue() & 0x0ffff;
+ }
+ return setValue(fin);
+ } else if (obj instanceof Integer[]) {
+ // Nulls in this array are treated as zeroes.
+ Integer[] arr = (Integer[]) obj;
+ int[] fin = new int[arr.length];
+ for (int i = 0; i < arr.length; i++) {
+ fin[i] = (arr[i] == null) ? 0 : arr[i].intValue();
+ }
+ return setValue(fin);
+ } else if (obj instanceof Long[]) {
+ // Nulls in this array are treated as zeroes.
+ Long[] arr = (Long[]) obj;
+ long[] fin = new long[arr.length];
+ for (int i = 0; i < arr.length; i++) {
+ fin[i] = (arr[i] == null) ? 0 : arr[i].longValue();
+ }
+ return setValue(fin);
+ } else if (obj instanceof Byte[]) {
+ // Nulls in this array are treated as zeroes.
+ Byte[] arr = (Byte[]) obj;
+ byte[] fin = new byte[arr.length];
+ for (int i = 0; i < arr.length; i++) {
+ fin[i] = (arr[i] == null) ? 0 : arr[i].byteValue();
+ }
+ return setValue(fin);
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * Sets a timestamp to this tag. The method converts the timestamp with the
+ * format of "yyyy:MM:dd kk:mm:ss" and calls {@link #setValue(String)}. This
+ * method will fail if the data type is not {@link #TYPE_ASCII} or the
+ * component count of this tag is not 20 or undefined.
+ *
+ * @param time the number of milliseconds since Jan. 1, 1970 GMT
+ * @return true on success
+ */
+ public boolean setTimeValue(long time) {
+ // synchronized on TIME_FORMAT as SimpleDateFormat is not thread safe
+ synchronized (TIME_FORMAT) {
+ return setValue(TIME_FORMAT.format(new Date(time)));
+ }
+ }
+
+ /**
+ * Gets the value as a String. This method should be used for tags of type
+ * {@link #TYPE_ASCII}.
+ *
+ * @return the value as a String, or null if the tag's value does not exist
+ * or cannot be converted to a String.
+ */
+ public String getValueAsString() {
+ if (mValue == null) {
+ return null;
+ } else if (mValue instanceof String) {
+ return (String) mValue;
+ } else if (mValue instanceof byte[]) {
+ return new String((byte[]) mValue, US_ASCII);
+ }
+ return null;
+ }
+
+ /**
+ * Gets the value as a String. This method should be used for tags of type
+ * {@link #TYPE_ASCII}.
+ *
+ * @param defaultValue the String to return if the tag's value does not
+ * exist or cannot be converted to a String.
+ * @return the tag's value as a String, or the defaultValue.
+ */
+ public String getValueAsString(String defaultValue) {
+ String s = getValueAsString();
+ if (s == null) {
+ return defaultValue;
+ }
+ return s;
+ }
+
+ /**
+ * Gets the value as a byte array. This method should be used for tags of
+ * type {@link #TYPE_UNDEFINED} or {@link #TYPE_UNSIGNED_BYTE}.
+ *
+ * @return the value as a byte array, or null if the tag's value does not
+ * exist or cannot be converted to a byte array.
+ */
+ public byte[] getValueAsBytes() {
+ if (mValue instanceof byte[]) {
+ return (byte[]) mValue;
+ }
+ return null;
+ }
+
+ /**
+ * Gets the value as a byte. If there are more than 1 bytes in this value,
+ * gets the first byte. This method should be used for tags of type
+ * {@link #TYPE_UNDEFINED} or {@link #TYPE_UNSIGNED_BYTE}.
+ *
+ * @param defaultValue the byte to return if tag's value does not exist or
+ * cannot be converted to a byte.
+ * @return the tag's value as a byte, or the defaultValue.
+ */
+ public byte getValueAsByte(byte defaultValue) {
+ byte[] b = getValueAsBytes();
+ if (b == null || b.length < 1) {
+ return defaultValue;
+ }
+ return b[0];
+ }
+
+ /**
+ * Gets the value as an array of Rationals. This method should be used for
+ * tags of type {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}.
+ *
+ * @return the value as as an array of Rationals, or null if the tag's value
+ * does not exist or cannot be converted to an array of Rationals.
+ */
+ public Rational[] getValueAsRationals() {
+ if (mValue instanceof Rational[]) {
+ return (Rational[]) mValue;
+ }
+ return null;
+ }
+
+ /**
+ * Gets the value as a Rational. If there are more than 1 Rationals in this
+ * value, gets the first one. This method should be used for tags of type
+ * {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}.
+ *
+ * @param defaultValue the Rational to return if tag's value does not exist
+ * or cannot be converted to a Rational.
+ * @return the tag's value as a Rational, or the defaultValue.
+ */
+ public Rational getValueAsRational(Rational defaultValue) {
+ Rational[] r = getValueAsRationals();
+ if (r == null || r.length < 1) {
+ return defaultValue;
+ }
+ return r[0];
+ }
+
+ /**
+ * Gets the value as a Rational. If there are more than 1 Rationals in this
+ * value, gets the first one. This method should be used for tags of type
+ * {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}.
+ *
+ * @param defaultValue the numerator of the Rational to return if tag's
+ * value does not exist or cannot be converted to a Rational (the
+ * denominator will be 1).
+ * @return the tag's value as a Rational, or the defaultValue.
+ */
+ public Rational getValueAsRational(long defaultValue) {
+ Rational defaultVal = new Rational(defaultValue, 1);
+ return getValueAsRational(defaultVal);
+ }
+
+ /**
+ * Gets the value as an array of ints. This method should be used for tags
+ * of type {@link #TYPE_UNSIGNED_SHORT}, {@link #TYPE_UNSIGNED_LONG}.
+ *
+ * @return the value as as an array of ints, or null if the tag's value does
+ * not exist or cannot be converted to an array of ints.
+ */
+ public int[] getValueAsInts() {
+ if (mValue == null) {
+ return null;
+ } else if (mValue instanceof long[]) {
+ long[] val = (long[]) mValue;
+ int[] arr = new int[val.length];
+ for (int i = 0; i < val.length; i++) {
+ arr[i] = (int) val[i]; // Truncates
+ }
+ return arr;
+ }
+ return null;
+ }
+
+ /**
+ * Gets the value as an int. If there are more than 1 ints in this value,
+ * gets the first one. This method should be used for tags of type
+ * {@link #TYPE_UNSIGNED_SHORT}, {@link #TYPE_UNSIGNED_LONG}.
+ *
+ * @param defaultValue the int to return if tag's value does not exist or
+ * cannot be converted to an int.
+ * @return the tag's value as a int, or the defaultValue.
+ */
+ public int getValueAsInt(int defaultValue) {
+ int[] i = getValueAsInts();
+ if (i == null || i.length < 1) {
+ return defaultValue;
+ }
+ return i[0];
+ }
+
+ /**
+ * Gets the value as an array of longs. This method should be used for tags
+ * of type {@link #TYPE_UNSIGNED_LONG}.
+ *
+ * @return the value as as an array of longs, or null if the tag's value
+ * does not exist or cannot be converted to an array of longs.
+ */
+ public long[] getValueAsLongs() {
+ if (mValue instanceof long[]) {
+ return (long[]) mValue;
+ }
+ return null;
+ }
+
+ /**
+ * Gets the value or null if none exists. If there are more than 1 longs in
+ * this value, gets the first one. This method should be used for tags of
+ * type {@link #TYPE_UNSIGNED_LONG}.
+ *
+ * @param defaultValue the long to return if tag's value does not exist or
+ * cannot be converted to a long.
+ * @return the tag's value as a long, or the defaultValue.
+ */
+ public long getValueAsLong(long defaultValue) {
+ long[] l = getValueAsLongs();
+ if (l == null || l.length < 1) {
+ return defaultValue;
+ }
+ return l[0];
+ }
+
+ /**
+ * Gets the tag's value or null if none exists.
+ */
+ public Object getValue() {
+ return mValue;
+ }
+
+ /**
+ * Gets a long representation of the value.
+ *
+ * @param defaultValue value to return if there is no value or value is a
+ * rational with a denominator of 0.
+ * @return the tag's value as a long, or defaultValue if no representation
+ * exists.
+ */
+ public long forceGetValueAsLong(long defaultValue) {
+ long[] l = getValueAsLongs();
+ if (l != null && l.length >= 1) {
+ return l[0];
+ }
+ byte[] b = getValueAsBytes();
+ if (b != null && b.length >= 1) {
+ return b[0];
+ }
+ Rational[] r = getValueAsRationals();
+ if (r != null && r.length >= 1 && r[0].getDenominator() != 0) {
+ return (long) r[0].toDouble();
+ }
+ return defaultValue;
+ }
+
+ /**
+ * Gets a string representation of the value.
+ */
+ public String forceGetValueAsString() {
+ if (mValue == null) {
+ return "";
+ } else if (mValue instanceof byte[]) {
+ if (mDataType == TYPE_ASCII) {
+ return new String((byte[]) mValue, US_ASCII);
+ } else {
+ return Arrays.toString((byte[]) mValue);
+ }
+ } else if (mValue instanceof long[]) {
+ if (((long[]) mValue).length == 1) {
+ return String.valueOf(((long[]) mValue)[0]);
+ } else {
+ return Arrays.toString((long[]) mValue);
+ }
+ } else if (mValue instanceof Object[]) {
+ if (((Object[]) mValue).length == 1) {
+ Object val = ((Object[]) mValue)[0];
+ if (val == null) {
+ return "";
+ } else {
+ return val.toString();
+ }
+ } else {
+ return Arrays.toString((Object[]) mValue);
+ }
+ } else {
+ return mValue.toString();
+ }
+ }
+
+ /**
+ * Gets the value for type {@link #TYPE_ASCII}, {@link #TYPE_LONG},
+ * {@link #TYPE_UNDEFINED}, {@link #TYPE_UNSIGNED_BYTE},
+ * {@link #TYPE_UNSIGNED_LONG}, or {@link #TYPE_UNSIGNED_SHORT}. For
+ * {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}, call
+ * {@link #getRational(int)} instead.
+ *
+ * @exception IllegalArgumentException if the data type is
+ * {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}.
+ */
+ protected long getValueAt(int index) {
+ if (mValue instanceof long[]) {
+ return ((long[]) mValue)[index];
+ } else if (mValue instanceof byte[]) {
+ return ((byte[]) mValue)[index];
+ }
+ throw new IllegalArgumentException("Cannot get integer value from "
+ + convertTypeToString(mDataType));
+ }
+
+ /**
+ * Gets the {@link #TYPE_ASCII} data.
+ *
+ * @exception IllegalArgumentException If the type is NOT
+ * {@link #TYPE_ASCII}.
+ */
+ protected String getString() {
+ if (mDataType != TYPE_ASCII) {
+ throw new IllegalArgumentException("Cannot get ASCII value from "
+ + convertTypeToString(mDataType));
+ }
+ return new String((byte[]) mValue, US_ASCII);
+ }
+
+ /*
+ * Get the converted ascii byte. Used by ExifOutputStream.
+ */
+ protected byte[] getStringByte() {
+ return (byte[]) mValue;
+ }
+
+ /**
+ * Gets the {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL} data.
+ *
+ * @exception IllegalArgumentException If the type is NOT
+ * {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}.
+ */
+ protected Rational getRational(int index) {
+ if ((mDataType != TYPE_RATIONAL) && (mDataType != TYPE_UNSIGNED_RATIONAL)) {
+ throw new IllegalArgumentException("Cannot get RATIONAL value from "
+ + convertTypeToString(mDataType));
+ }
+ return ((Rational[]) mValue)[index];
+ }
+
+ /**
+ * Equivalent to getBytes(buffer, 0, buffer.length).
+ */
+ protected void getBytes(byte[] buf) {
+ getBytes(buf, 0, buf.length);
+ }
+
+ /**
+ * Gets the {@link #TYPE_UNDEFINED} or {@link #TYPE_UNSIGNED_BYTE} data.
+ *
+ * @param buf the byte array in which to store the bytes read.
+ * @param offset the initial position in buffer to store the bytes.
+ * @param length the maximum number of bytes to store in buffer. If length >
+ * component count, only the valid bytes will be stored.
+ * @exception IllegalArgumentException If the type is NOT
+ * {@link #TYPE_UNDEFINED} or {@link #TYPE_UNSIGNED_BYTE}.
+ */
+ protected void getBytes(byte[] buf, int offset, int length) {
+ if ((mDataType != TYPE_UNDEFINED) && (mDataType != TYPE_UNSIGNED_BYTE)) {
+ throw new IllegalArgumentException("Cannot get BYTE value from "
+ + convertTypeToString(mDataType));
+ }
+ System.arraycopy(mValue, 0, buf, offset,
+ (length > mComponentCountActual) ? mComponentCountActual : length);
+ }
+
+ /**
+ * Gets the offset of this tag. This is only valid if this data size > 4 and
+ * contains an offset to the location of the actual value.
+ */
+ protected int getOffset() {
+ return mOffset;
+ }
+
+ /**
+ * Sets the offset of this tag.
+ */
+ protected void setOffset(int offset) {
+ mOffset = offset;
+ }
+
+ protected void setHasDefinedCount(boolean d) {
+ mHasDefinedDefaultComponentCount = d;
+ }
+
+ protected boolean hasDefinedCount() {
+ return mHasDefinedDefaultComponentCount;
+ }
+
+ private boolean checkBadComponentCount(int count) {
+ if (mHasDefinedDefaultComponentCount && (mComponentCountActual != count)) {
+ return true;
+ }
+ return false;
+ }
+
+ private static String convertTypeToString(short type) {
+ switch (type) {
+ case TYPE_UNSIGNED_BYTE:
+ return "UNSIGNED_BYTE";
+ case TYPE_ASCII:
+ return "ASCII";
+ case TYPE_UNSIGNED_SHORT:
+ return "UNSIGNED_SHORT";
+ case TYPE_UNSIGNED_LONG:
+ return "UNSIGNED_LONG";
+ case TYPE_UNSIGNED_RATIONAL:
+ return "UNSIGNED_RATIONAL";
+ case TYPE_UNDEFINED:
+ return "UNDEFINED";
+ case TYPE_LONG:
+ return "LONG";
+ case TYPE_RATIONAL:
+ return "RATIONAL";
+ default:
+ return "";
+ }
+ }
+
+ private boolean checkOverflowForUnsignedShort(int[] value) {
+ for (int v : value) {
+ if (v > UNSIGNED_SHORT_MAX || v < 0) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private boolean checkOverflowForUnsignedLong(long[] value) {
+ for (long v : value) {
+ if (v < 0 || v > UNSIGNED_LONG_MAX) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private boolean checkOverflowForUnsignedLong(int[] value) {
+ for (int v : value) {
+ if (v < 0) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private boolean checkOverflowForUnsignedRational(Rational[] value) {
+ for (Rational v : value) {
+ if (v.getNumerator() < 0 || v.getDenominator() < 0
+ || v.getNumerator() > UNSIGNED_LONG_MAX
+ || v.getDenominator() > UNSIGNED_LONG_MAX) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private boolean checkOverflowForRational(Rational[] value) {
+ for (Rational v : value) {
+ if (v.getNumerator() < LONG_MIN || v.getDenominator() < LONG_MIN
+ || v.getNumerator() > LONG_MAX
+ || v.getDenominator() > LONG_MAX) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (obj == null) {
+ return false;
+ }
+ if (obj instanceof ExifTag) {
+ ExifTag tag = (ExifTag) obj;
+ if (tag.mTagId != this.mTagId
+ || tag.mComponentCountActual != this.mComponentCountActual
+ || tag.mDataType != this.mDataType) {
+ return false;
+ }
+ if (mValue != null) {
+ if (tag.mValue == null) {
+ return false;
+ } else if (mValue instanceof long[]) {
+ if (!(tag.mValue instanceof long[])) {
+ return false;
+ }
+ return Arrays.equals((long[]) mValue, (long[]) tag.mValue);
+ } else if (mValue instanceof Rational[]) {
+ if (!(tag.mValue instanceof Rational[])) {
+ return false;
+ }
+ return Arrays.equals((Rational[]) mValue, (Rational[]) tag.mValue);
+ } else if (mValue instanceof byte[]) {
+ if (!(tag.mValue instanceof byte[])) {
+ return false;
+ }
+ return Arrays.equals((byte[]) mValue, (byte[]) tag.mValue);
+ } else {
+ return mValue.equals(tag.mValue);
+ }
+ } else {
+ return tag.mValue == null;
+ }
+ }
+ return false;
+ }
+
+ @Override
+ public String toString() {
+ return String.format("tag id: %04X\n", mTagId) + "ifd id: " + mIfd + "\ntype: "
+ + convertTypeToString(mDataType) + "\ncount: " + mComponentCountActual
+ + "\noffset: " + mOffset + "\nvalue: " + forceGetValueAsString() + "\n";
+ }
+
+}
diff --git a/src/com/android/gallery3d/exif/IfdData.java b/src/com/android/gallery3d/exif/IfdData.java
new file mode 100644
index 0000000..093944a
--- /dev/null
+++ b/src/com/android/gallery3d/exif/IfdData.java
@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * This class stores all the tags in an IFD.
+ *
+ * @see ExifData
+ * @see ExifTag
+ */
+class IfdData {
+
+ private final int mIfdId;
+ private final Map<Short, ExifTag> mExifTags = new HashMap<Short, ExifTag>();
+ private int mOffsetToNextIfd = 0;
+ private static final int[] sIfds = {
+ IfdId.TYPE_IFD_0, IfdId.TYPE_IFD_1, IfdId.TYPE_IFD_EXIF,
+ IfdId.TYPE_IFD_INTEROPERABILITY, IfdId.TYPE_IFD_GPS
+ };
+ /**
+ * Creates an IfdData with given IFD ID.
+ *
+ * @see IfdId#TYPE_IFD_0
+ * @see IfdId#TYPE_IFD_1
+ * @see IfdId#TYPE_IFD_EXIF
+ * @see IfdId#TYPE_IFD_GPS
+ * @see IfdId#TYPE_IFD_INTEROPERABILITY
+ */
+ IfdData(int ifdId) {
+ mIfdId = ifdId;
+ }
+
+ static protected int[] getIfds() {
+ return sIfds;
+ }
+
+ /**
+ * Get a array the contains all {@link ExifTag} in this IFD.
+ */
+ protected ExifTag[] getAllTags() {
+ return mExifTags.values().toArray(new ExifTag[mExifTags.size()]);
+ }
+
+ /**
+ * Gets the ID of this IFD.
+ *
+ * @see IfdId#TYPE_IFD_0
+ * @see IfdId#TYPE_IFD_1
+ * @see IfdId#TYPE_IFD_EXIF
+ * @see IfdId#TYPE_IFD_GPS
+ * @see IfdId#TYPE_IFD_INTEROPERABILITY
+ */
+ protected int getId() {
+ return mIfdId;
+ }
+
+ /**
+ * Gets the {@link ExifTag} with given tag id. Return null if there is no
+ * such tag.
+ */
+ protected ExifTag getTag(short tagId) {
+ return mExifTags.get(tagId);
+ }
+
+ /**
+ * Adds or replaces a {@link ExifTag}.
+ */
+ protected ExifTag setTag(ExifTag tag) {
+ tag.setIfd(mIfdId);
+ return mExifTags.put(tag.getTagId(), tag);
+ }
+
+ protected boolean checkCollision(short tagId) {
+ return mExifTags.get(tagId) != null;
+ }
+
+ /**
+ * Removes the tag of the given ID
+ */
+ protected void removeTag(short tagId) {
+ mExifTags.remove(tagId);
+ }
+
+ /**
+ * Gets the tags count in the IFD.
+ */
+ protected int getTagCount() {
+ return mExifTags.size();
+ }
+
+ /**
+ * Sets the offset of next IFD.
+ */
+ protected void setOffsetToNextIfd(int offset) {
+ mOffsetToNextIfd = offset;
+ }
+
+ /**
+ * Gets the offset of next IFD.
+ */
+ protected int getOffsetToNextIfd() {
+ return mOffsetToNextIfd;
+ }
+
+ /**
+ * Returns true if all tags in this two IFDs are equal. Note that tags of
+ * IFDs offset or thumbnail offset will be ignored.
+ */
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+ if (obj == null) {
+ return false;
+ }
+ if (obj instanceof IfdData) {
+ IfdData data = (IfdData) obj;
+ if (data.getId() == mIfdId && data.getTagCount() == getTagCount()) {
+ ExifTag[] tags = data.getAllTags();
+ for (ExifTag tag : tags) {
+ if (ExifInterface.isOffsetTag(tag.getTagId())) {
+ continue;
+ }
+ ExifTag tag2 = mExifTags.get(tag.getTagId());
+ if (!tag.equals(tag2)) {
+ return false;
+ }
+ }
+ return true;
+ }
+ }
+ return false;
+ }
+}
diff --git a/src/com/android/gallery3d/exif/IfdId.java b/src/com/android/gallery3d/exif/IfdId.java
new file mode 100644
index 0000000..7842edb
--- /dev/null
+++ b/src/com/android/gallery3d/exif/IfdId.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+/**
+ * The constants of the IFD ID defined in EXIF spec.
+ */
+public interface IfdId {
+ public static final int TYPE_IFD_0 = 0;
+ public static final int TYPE_IFD_1 = 1;
+ public static final int TYPE_IFD_EXIF = 2;
+ public static final int TYPE_IFD_INTEROPERABILITY = 3;
+ public static final int TYPE_IFD_GPS = 4;
+ /* This is used in ExifData to allocate enough IfdData */
+ static final int TYPE_IFD_COUNT = 5;
+
+}
diff --git a/src/com/android/gallery3d/exif/JpegHeader.java b/src/com/android/gallery3d/exif/JpegHeader.java
new file mode 100644
index 0000000..e3e787e
--- /dev/null
+++ b/src/com/android/gallery3d/exif/JpegHeader.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+class JpegHeader {
+ public static final short SOI = (short) 0xFFD8;
+ public static final short APP1 = (short) 0xFFE1;
+ public static final short APP0 = (short) 0xFFE0;
+ public static final short EOI = (short) 0xFFD9;
+
+ /**
+ * SOF (start of frame). All value between SOF0 and SOF15 is SOF marker except for DHT, JPG,
+ * and DAC marker.
+ */
+ public static final short SOF0 = (short) 0xFFC0;
+ public static final short SOF15 = (short) 0xFFCF;
+ public static final short DHT = (short) 0xFFC4;
+ public static final short JPG = (short) 0xFFC8;
+ public static final short DAC = (short) 0xFFCC;
+
+ public static final boolean isSofMarker(short marker) {
+ return marker >= SOF0 && marker <= SOF15 && marker != DHT && marker != JPG
+ && marker != DAC;
+ }
+}
diff --git a/src/com/android/gallery3d/exif/OrderedDataOutputStream.java b/src/com/android/gallery3d/exif/OrderedDataOutputStream.java
new file mode 100644
index 0000000..428e6b9
--- /dev/null
+++ b/src/com/android/gallery3d/exif/OrderedDataOutputStream.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+import java.io.FilterOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+class OrderedDataOutputStream extends FilterOutputStream {
+ private final ByteBuffer mByteBuffer = ByteBuffer.allocate(4);
+
+ public OrderedDataOutputStream(OutputStream out) {
+ super(out);
+ }
+
+ public OrderedDataOutputStream setByteOrder(ByteOrder order) {
+ mByteBuffer.order(order);
+ return this;
+ }
+
+ public OrderedDataOutputStream writeShort(short value) throws IOException {
+ mByteBuffer.rewind();
+ mByteBuffer.putShort(value);
+ out.write(mByteBuffer.array(), 0, 2);
+ return this;
+ }
+
+ public OrderedDataOutputStream writeInt(int value) throws IOException {
+ mByteBuffer.rewind();
+ mByteBuffer.putInt(value);
+ out.write(mByteBuffer.array());
+ return this;
+ }
+
+ public OrderedDataOutputStream writeRational(Rational rational) throws IOException {
+ writeInt((int) rational.getNumerator());
+ writeInt((int) rational.getDenominator());
+ return this;
+ }
+}
diff --git a/src/com/android/gallery3d/exif/Rational.java b/src/com/android/gallery3d/exif/Rational.java
new file mode 100644
index 0000000..591d63f
--- /dev/null
+++ b/src/com/android/gallery3d/exif/Rational.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.exif;
+
+/**
+ * The rational data type of EXIF tag. Contains a pair of longs representing the
+ * numerator and denominator of a Rational number.
+ */
+public class Rational {
+
+ private final long mNumerator;
+ private final long mDenominator;
+
+ /**
+ * Create a Rational with a given numerator and denominator.
+ *
+ * @param nominator
+ * @param denominator
+ */
+ public Rational(long nominator, long denominator) {
+ mNumerator = nominator;
+ mDenominator = denominator;
+ }
+
+ /**
+ * Create a copy of a Rational.
+ */
+ public Rational(Rational r) {
+ mNumerator = r.mNumerator;
+ mDenominator = r.mDenominator;
+ }
+
+ /**
+ * Gets the numerator of the rational.
+ */
+ public long getNumerator() {
+ return mNumerator;
+ }
+
+ /**
+ * Gets the denominator of the rational
+ */
+ public long getDenominator() {
+ return mDenominator;
+ }
+
+ /**
+ * Gets the rational value as type double. Will cause a divide-by-zero error
+ * if the denominator is 0.
+ */
+ public double toDouble() {
+ return mNumerator / (double) mDenominator;
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (obj == null) {
+ return false;
+ }
+ if (this == obj) {
+ return true;
+ }
+ if (obj instanceof Rational) {
+ Rational data = (Rational) obj;
+ return mNumerator == data.mNumerator && mDenominator == data.mDenominator;
+ }
+ return false;
+ }
+
+ @Override
+ public String toString() {
+ return mNumerator + "/" + mDenominator;
+ }
+}
diff --git a/src/com/android/gallery3d/glrenderer/BasicTexture.java b/src/com/android/gallery3d/glrenderer/BasicTexture.java
new file mode 100644
index 0000000..2e77b90
--- /dev/null
+++ b/src/com/android/gallery3d/glrenderer/BasicTexture.java
@@ -0,0 +1,212 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.glrenderer;
+
+import android.util.Log;
+
+import com.android.gallery3d.common.Utils;
+
+import java.util.WeakHashMap;
+
+// BasicTexture is a Texture corresponds to a real GL texture.
+// The state of a BasicTexture indicates whether its data is loaded to GL memory.
+// If a BasicTexture is loaded into GL memory, it has a GL texture id.
+public abstract class BasicTexture implements Texture {
+
+ @SuppressWarnings("unused")
+ private static final String TAG = "BasicTexture";
+ protected static final int UNSPECIFIED = -1;
+
+ protected static final int STATE_UNLOADED = 0;
+ protected static final int STATE_LOADED = 1;
+ protected static final int STATE_ERROR = -1;
+
+ // Log a warning if a texture is larger along a dimension
+ private static final int MAX_TEXTURE_SIZE = 4096;
+
+ protected int mId = -1;
+ protected int mState;
+
+ protected int mWidth = UNSPECIFIED;
+ protected int mHeight = UNSPECIFIED;
+
+ protected int mTextureWidth;
+ protected int mTextureHeight;
+
+ private boolean mHasBorder;
+
+ protected GLCanvas mCanvasRef = null;
+ private static WeakHashMap<BasicTexture, Object> sAllTextures
+ = new WeakHashMap<BasicTexture, Object>();
+ private static ThreadLocal sInFinalizer = new ThreadLocal();
+
+ protected BasicTexture(GLCanvas canvas, int id, int state) {
+ setAssociatedCanvas(canvas);
+ mId = id;
+ mState = state;
+ synchronized (sAllTextures) {
+ sAllTextures.put(this, null);
+ }
+ }
+
+ protected BasicTexture() {
+ this(null, 0, STATE_UNLOADED);
+ }
+
+ protected void setAssociatedCanvas(GLCanvas canvas) {
+ mCanvasRef = canvas;
+ }
+
+ /**
+ * Sets the content size of this texture. In OpenGL, the actual texture
+ * size must be of power of 2, the size of the content may be smaller.
+ */
+ public void setSize(int width, int height) {
+ mWidth = width;
+ mHeight = height;
+ mTextureWidth = width > 0 ? Utils.nextPowerOf2(width) : 0;
+ mTextureHeight = height > 0 ? Utils.nextPowerOf2(height) : 0;
+ if (mTextureWidth > MAX_TEXTURE_SIZE || mTextureHeight > MAX_TEXTURE_SIZE) {
+ Log.w(TAG, String.format("texture is too large: %d x %d",
+ mTextureWidth, mTextureHeight), new Exception());
+ }
+ }
+
+ public boolean isFlippedVertically() {
+ return false;
+ }
+
+ public int getId() {
+ return mId;
+ }
+
+ @Override
+ public int getWidth() {
+ return mWidth;
+ }
+
+ @Override
+ public int getHeight() {
+ return mHeight;
+ }
+
+ // Returns the width rounded to the next power of 2.
+ public int getTextureWidth() {
+ return mTextureWidth;
+ }
+
+ // Returns the height rounded to the next power of 2.
+ public int getTextureHeight() {
+ return mTextureHeight;
+ }
+
+ // Returns true if the texture has one pixel transparent border around the
+ // actual content. This is used to avoid jigged edges.
+ //
+ // The jigged edges appear because we use GL_CLAMP_TO_EDGE for texture wrap
+ // mode (GL_CLAMP is not available in OpenGL ES), so a pixel partially
+ // covered by the texture will use the color of the edge texel. If we add
+ // the transparent border, the color of the edge texel will be mixed with
+ // appropriate amount of transparent.
+ //
+ // Currently our background is black, so we can draw the thumbnails without
+ // enabling blending.
+ public boolean hasBorder() {
+ return mHasBorder;
+ }
+
+ protected void setBorder(boolean hasBorder) {
+ mHasBorder = hasBorder;
+ }
+
+ @Override
+ public void draw(GLCanvas canvas, int x, int y) {
+ canvas.drawTexture(this, x, y, getWidth(), getHeight());
+ }
+
+ @Override
+ public void draw(GLCanvas canvas, int x, int y, int w, int h) {
+ canvas.drawTexture(this, x, y, w, h);
+ }
+
+ // onBind is called before GLCanvas binds this texture.
+ // It should make sure the data is uploaded to GL memory.
+ abstract protected boolean onBind(GLCanvas canvas);
+
+ // Returns the GL texture target for this texture (e.g. GL_TEXTURE_2D).
+ abstract protected int getTarget();
+
+ public boolean isLoaded() {
+ return mState == STATE_LOADED;
+ }
+
+ // recycle() is called when the texture will never be used again,
+ // so it can free all resources.
+ public void recycle() {
+ freeResource();
+ }
+
+ // yield() is called when the texture will not be used temporarily,
+ // so it can free some resources.
+ // The default implementation unloads the texture from GL memory, so
+ // the subclass should make sure it can reload the texture to GL memory
+ // later, or it will have to override this method.
+ public void yield() {
+ freeResource();
+ }
+
+ private void freeResource() {
+ GLCanvas canvas = mCanvasRef;
+ if (canvas != null && mId != -1) {
+ canvas.unloadTexture(this);
+ mId = -1; // Don't free it again.
+ }
+ mState = STATE_UNLOADED;
+ setAssociatedCanvas(null);
+ }
+
+ @Override
+ protected void finalize() {
+ sInFinalizer.set(BasicTexture.class);
+ recycle();
+ sInFinalizer.set(null);
+ }
+
+ // This is for deciding if we can call Bitmap's recycle().
+ // We cannot call Bitmap's recycle() in finalizer because at that point
+ // the finalizer of Bitmap may already be called so recycle() will crash.
+ public static boolean inFinalizer() {
+ return sInFinalizer.get() != null;
+ }
+
+ public static void yieldAllTextures() {
+ synchronized (sAllTextures) {
+ for (BasicTexture t : sAllTextures.keySet()) {
+ t.yield();
+ }
+ }
+ }
+
+ public static void invalidateAllTextures() {
+ synchronized (sAllTextures) {
+ for (BasicTexture t : sAllTextures.keySet()) {
+ t.mState = STATE_UNLOADED;
+ t.setAssociatedCanvas(null);
+ }
+ }
+ }
+}
diff --git a/src/com/android/gallery3d/glrenderer/BitmapTexture.java b/src/com/android/gallery3d/glrenderer/BitmapTexture.java
new file mode 100644
index 0000000..100b0b3
--- /dev/null
+++ b/src/com/android/gallery3d/glrenderer/BitmapTexture.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.glrenderer;
+
+import android.graphics.Bitmap;
+
+import junit.framework.Assert;
+
+// BitmapTexture is a texture whose content is specified by a fixed Bitmap.
+//
+// The texture does not own the Bitmap. The user should make sure the Bitmap
+// is valid during the texture's lifetime. When the texture is recycled, it
+// does not free the Bitmap.
+public class BitmapTexture extends UploadedTexture {
+ protected Bitmap mContentBitmap;
+
+ public BitmapTexture(Bitmap bitmap) {
+ this(bitmap, false);
+ }
+
+ public BitmapTexture(Bitmap bitmap, boolean hasBorder) {
+ super(hasBorder);
+ Assert.assertTrue(bitmap != null && !bitmap.isRecycled());
+ mContentBitmap = bitmap;
+ }
+
+ @Override
+ protected void onFreeBitmap(Bitmap bitmap) {
+ // Do nothing.
+ }
+
+ @Override
+ protected Bitmap onGetBitmap() {
+ return mContentBitmap;
+ }
+
+ public Bitmap getBitmap() {
+ return mContentBitmap;
+ }
+}
diff --git a/src/com/android/gallery3d/glrenderer/GLCanvas.java b/src/com/android/gallery3d/glrenderer/GLCanvas.java
new file mode 100644
index 0000000..305e905
--- /dev/null
+++ b/src/com/android/gallery3d/glrenderer/GLCanvas.java
@@ -0,0 +1,217 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.glrenderer;
+
+import android.graphics.Bitmap;
+import android.graphics.Rect;
+import android.graphics.RectF;
+
+import javax.microedition.khronos.opengles.GL11;
+
+//
+// GLCanvas gives a convenient interface to draw using OpenGL.
+//
+// When a rectangle is specified in this interface, it means the region
+// [x, x+width) * [y, y+height)
+//
+public interface GLCanvas {
+
+ public GLId getGLId();
+
+ // Tells GLCanvas the size of the underlying GL surface. This should be
+ // called before first drawing and when the size of GL surface is changed.
+ // This is called by GLRoot and should not be called by the clients
+ // who only want to draw on the GLCanvas. Both width and height must be
+ // nonnegative.
+ public abstract void setSize(int width, int height);
+
+ // Clear the drawing buffers. This should only be used by GLRoot.
+ public abstract void clearBuffer();
+
+ public abstract void clearBuffer(float[] argb);
+
+ // Sets and gets the current alpha, alpha must be in [0, 1].
+ public abstract void setAlpha(float alpha);
+
+ public abstract float getAlpha();
+
+ // (current alpha) = (current alpha) * alpha
+ public abstract void multiplyAlpha(float alpha);
+
+ // Change the current transform matrix.
+ public abstract void translate(float x, float y, float z);
+
+ public abstract void translate(float x, float y);
+
+ public abstract void scale(float sx, float sy, float sz);
+
+ public abstract void rotate(float angle, float x, float y, float z);
+
+ public abstract void multiplyMatrix(float[] mMatrix, int offset);
+
+ // Pushes the configuration state (matrix, and alpha) onto
+ // a private stack.
+ public abstract void save();
+
+ // Same as save(), but only save those specified in saveFlags.
+ public abstract void save(int saveFlags);
+
+ public static final int SAVE_FLAG_ALL = 0xFFFFFFFF;
+ public static final int SAVE_FLAG_ALPHA = 0x01;
+ public static final int SAVE_FLAG_MATRIX = 0x02;
+
+ // Pops from the top of the stack as current configuration state (matrix,
+ // alpha, and clip). This call balances a previous call to save(), and is
+ // used to remove all modifications to the configuration state since the
+ // last save call.
+ public abstract void restore();
+
+ // Draws a line using the specified paint from (x1, y1) to (x2, y2).
+ // (Both end points are included).
+ public abstract void drawLine(float x1, float y1, float x2, float y2, GLPaint paint);
+
+ // Draws a rectangle using the specified paint from (x1, y1) to (x2, y2).
+ // (Both end points are included).
+ public abstract void drawRect(float x1, float y1, float x2, float y2, GLPaint paint);
+
+ // Fills the specified rectangle with the specified color.
+ public abstract void fillRect(float x, float y, float width, float height, int color);
+
+ // Draws a texture to the specified rectangle.
+ public abstract void drawTexture(
+ BasicTexture texture, int x, int y, int width, int height);
+
+ public abstract void drawMesh(BasicTexture tex, int x, int y, int xyBuffer,
+ int uvBuffer, int indexBuffer, int indexCount);
+
+ // Draws the source rectangle part of the texture to the target rectangle.
+ public abstract void drawTexture(BasicTexture texture, RectF source, RectF target);
+
+ // Draw a texture with a specified texture transform.
+ public abstract void drawTexture(BasicTexture texture, float[] mTextureTransform,
+ int x, int y, int w, int h);
+
+ // Draw two textures to the specified rectangle. The actual texture used is
+ // from * (1 - ratio) + to * ratio
+ // The two textures must have the same size.
+ public abstract void drawMixed(BasicTexture from, int toColor,
+ float ratio, int x, int y, int w, int h);
+
+ // Draw a region of a texture and a specified color to the specified
+ // rectangle. The actual color used is from * (1 - ratio) + to * ratio.
+ // The region of the texture is defined by parameter "src". The target
+ // rectangle is specified by parameter "target".
+ public abstract void drawMixed(BasicTexture from, int toColor,
+ float ratio, RectF src, RectF target);
+
+ // Unloads the specified texture from the canvas. The resource allocated
+ // to draw the texture will be released. The specified texture will return
+ // to the unloaded state. This function should be called only from
+ // BasicTexture or its descendant
+ public abstract boolean unloadTexture(BasicTexture texture);
+
+ // Delete the specified buffer object, similar to unloadTexture.
+ public abstract void deleteBuffer(int bufferId);
+
+ // Delete the textures and buffers in GL side. This function should only be
+ // called in the GL thread.
+ public abstract void deleteRecycledResources();
+
+ // Dump statistics information and clear the counters. For debug only.
+ public abstract void dumpStatisticsAndClear();
+
+ public abstract void beginRenderTarget(RawTexture texture);
+
+ public abstract void endRenderTarget();
+
+ /**
+ * Sets texture parameters to use GL_CLAMP_TO_EDGE for both
+ * GL_TEXTURE_WRAP_S and GL_TEXTURE_WRAP_T. Sets texture parameters to be
+ * GL_LINEAR for GL_TEXTURE_MIN_FILTER and GL_TEXTURE_MAG_FILTER.
+ * bindTexture() must be called prior to this.
+ *
+ * @param texture The texture to set parameters on.
+ */
+ public abstract void setTextureParameters(BasicTexture texture);
+
+ /**
+ * Initializes the texture to a size by calling texImage2D on it.
+ *
+ * @param texture The texture to initialize the size.
+ * @param format The texture format (e.g. GL_RGBA)
+ * @param type The texture type (e.g. GL_UNSIGNED_BYTE)
+ */
+ public abstract void initializeTextureSize(BasicTexture texture, int format, int type);
+
+ /**
+ * Initializes the texture to a size by calling texImage2D on it.
+ *
+ * @param texture The texture to initialize the size.
+ * @param bitmap The bitmap to initialize the bitmap with.
+ */
+ public abstract void initializeTexture(BasicTexture texture, Bitmap bitmap);
+
+ /**
+ * Calls glTexSubImage2D to upload a bitmap to the texture.
+ *
+ * @param texture The target texture to write to.
+ * @param xOffset Specifies a texel offset in the x direction within the
+ * texture array.
+ * @param yOffset Specifies a texel offset in the y direction within the
+ * texture array.
+ * @param format The texture format (e.g. GL_RGBA)
+ * @param type The texture type (e.g. GL_UNSIGNED_BYTE)
+ */
+ public abstract void texSubImage2D(BasicTexture texture, int xOffset, int yOffset,
+ Bitmap bitmap,
+ int format, int type);
+
+ /**
+ * Generates buffers and uploads the buffer data.
+ *
+ * @param buffer The buffer to upload
+ * @return The buffer ID that was generated.
+ */
+ public abstract int uploadBuffer(java.nio.FloatBuffer buffer);
+
+ /**
+ * Generates buffers and uploads the element array buffer data.
+ *
+ * @param buffer The buffer to upload
+ * @return The buffer ID that was generated.
+ */
+ public abstract int uploadBuffer(java.nio.ByteBuffer buffer);
+
+ /**
+ * After LightCycle makes GL calls, this method is called to restore the GL
+ * configuration to the one expected by GLCanvas.
+ */
+ public abstract void recoverFromLightCycle();
+
+ /**
+ * Gets the bounds given by x, y, width, and height as well as the internal
+ * matrix state. There is no special handling for non-90-degree rotations.
+ * It only considers the lower-left and upper-right corners as the bounds.
+ *
+ * @param bounds The output bounds to write to.
+ * @param x The left side of the input rectangle.
+ * @param y The bottom of the input rectangle.
+ * @param width The width of the input rectangle.
+ * @param height The height of the input rectangle.
+ */
+ public abstract void getBounds(Rect bounds, int x, int y, int width, int height);
+}
diff --git a/src/com/android/gallery3d/glrenderer/GLES20Canvas.java b/src/com/android/gallery3d/glrenderer/GLES20Canvas.java
new file mode 100644
index 0000000..4ead131
--- /dev/null
+++ b/src/com/android/gallery3d/glrenderer/GLES20Canvas.java
@@ -0,0 +1,1009 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.gallery3d.glrenderer;
+
+import android.graphics.Bitmap;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.opengl.GLES20;
+import android.opengl.GLUtils;
+import android.opengl.Matrix;
+import android.util.Log;
+
+import com.android.gallery3d.util.IntArray;
+
+import java.nio.Buffer;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+import java.util.ArrayList;
+import java.util.Arrays;
+
+public class GLES20Canvas implements GLCanvas {
+ // ************** Constants **********************
+ private static final String TAG = GLES20Canvas.class.getSimpleName();
+ private static final int FLOAT_SIZE = Float.SIZE / Byte.SIZE;
+ private static final float OPAQUE_ALPHA = 0.95f;
+
+ private static final int COORDS_PER_VERTEX = 2;
+ private static final int VERTEX_STRIDE = COORDS_PER_VERTEX * FLOAT_SIZE;
+
+ private static final int COUNT_FILL_VERTEX = 4;
+ private static final int COUNT_LINE_VERTEX = 2;
+ private static final int COUNT_RECT_VERTEX = 4;
+ private static final int OFFSET_FILL_RECT = 0;
+ private static final int OFFSET_DRAW_LINE = OFFSET_FILL_RECT + COUNT_FILL_VERTEX;
+ private static final int OFFSET_DRAW_RECT = OFFSET_DRAW_LINE + COUNT_LINE_VERTEX;
+
+ private static final float[] BOX_COORDINATES = {
+ 0, 0, // Fill rectangle
+ 1, 0,
+ 0, 1,
+ 1, 1,
+ 0, 0, // Draw line
+ 1, 1,
+ 0, 0, // Draw rectangle outline
+ 0, 1,
+ 1, 1,
+ 1, 0,
+ };
+
+ private static final float[] BOUNDS_COORDINATES = {
+ 0, 0, 0, 1,
+ 1, 1, 0, 1,
+ };
+
+ private static final String POSITION_ATTRIBUTE = "aPosition";
+ private static final String COLOR_UNIFORM = "uColor";
+ private static final String MATRIX_UNIFORM = "uMatrix";
+ private static final String TEXTURE_MATRIX_UNIFORM = "uTextureMatrix";
+ private static final String TEXTURE_SAMPLER_UNIFORM = "uTextureSampler";
+ private static final String ALPHA_UNIFORM = "uAlpha";
+ private static final String TEXTURE_COORD_ATTRIBUTE = "aTextureCoordinate";
+
+ private static final String DRAW_VERTEX_SHADER = ""
+ + "uniform mat4 " + MATRIX_UNIFORM + ";\n"
+ + "attribute vec2 " + POSITION_ATTRIBUTE + ";\n"
+ + "void main() {\n"
+ + " vec4 pos = vec4(" + POSITION_ATTRIBUTE + ", 0.0, 1.0);\n"
+ + " gl_Position = " + MATRIX_UNIFORM + " * pos;\n"
+ + "}\n";
+
+ private static final String DRAW_FRAGMENT_SHADER = ""
+ + "precision mediump float;\n"
+ + "uniform vec4 " + COLOR_UNIFORM + ";\n"
+ + "void main() {\n"
+ + " gl_FragColor = " + COLOR_UNIFORM + ";\n"
+ + "}\n";
+
+ private static final String TEXTURE_VERTEX_SHADER = ""
+ + "uniform mat4 " + MATRIX_UNIFORM + ";\n"
+ + "uniform mat4 " + TEXTURE_MATRIX_UNIFORM + ";\n"
+ + "attribute vec2 " + POSITION_ATTRIBUTE + ";\n"
+ + "varying vec2 vTextureCoord;\n"
+ + "void main() {\n"
+ + " vec4 pos = vec4(" + POSITION_ATTRIBUTE + ", 0.0, 1.0);\n"
+ + " gl_Position = " + MATRIX_UNIFORM + " * pos;\n"
+ + " vTextureCoord = (" + TEXTURE_MATRIX_UNIFORM + " * pos).xy;\n"
+ + "}\n";
+
+ private static final String MESH_VERTEX_SHADER = ""
+ + "uniform mat4 " + MATRIX_UNIFORM + ";\n"
+ + "attribute vec2 " + POSITION_ATTRIBUTE + ";\n"
+ + "attribute vec2 " + TEXTURE_COORD_ATTRIBUTE + ";\n"
+ + "varying vec2 vTextureCoord;\n"
+ + "void main() {\n"
+ + " vec4 pos = vec4(" + POSITION_ATTRIBUTE + ", 0.0, 1.0);\n"
+ + " gl_Position = " + MATRIX_UNIFORM + " * pos;\n"
+ + " vTextureCoord = " + TEXTURE_COORD_ATTRIBUTE + ";\n"
+ + "}\n";
+
+ private static final String TEXTURE_FRAGMENT_SHADER = ""
+ + "precision mediump float;\n"
+ + "varying vec2 vTextureCoord;\n"
+ + "uniform float " + ALPHA_UNIFORM + ";\n"
+ + "uniform sampler2D " + TEXTURE_SAMPLER_UNIFORM + ";\n"
+ + "void main() {\n"
+ + " gl_FragColor = texture2D(" + TEXTURE_SAMPLER_UNIFORM + ", vTextureCoord);\n"
+ + " gl_FragColor *= " + ALPHA_UNIFORM + ";\n"
+ + "}\n";
+
+ private static final String OES_TEXTURE_FRAGMENT_SHADER = ""
+ + "#extension GL_OES_EGL_image_external : require\n"
+ + "precision mediump float;\n"
+ + "varying vec2 vTextureCoord;\n"
+ + "uniform float " + ALPHA_UNIFORM + ";\n"
+ + "uniform samplerExternalOES " + TEXTURE_SAMPLER_UNIFORM + ";\n"
+ + "void main() {\n"
+ + " gl_FragColor = texture2D(" + TEXTURE_SAMPLER_UNIFORM + ", vTextureCoord);\n"
+ + " gl_FragColor *= " + ALPHA_UNIFORM + ";\n"
+ + "}\n";
+
+ private static final int INITIAL_RESTORE_STATE_SIZE = 8;
+ private static final int MATRIX_SIZE = 16;
+
+ // Keep track of restore state
+ private float[] mMatrices = new float[INITIAL_RESTORE_STATE_SIZE * MATRIX_SIZE];
+ private float[] mAlphas = new float[INITIAL_RESTORE_STATE_SIZE];
+ private IntArray mSaveFlags = new IntArray();
+
+ private int mCurrentAlphaIndex = 0;
+ private int mCurrentMatrixIndex = 0;
+
+ // Viewport size
+ private int mWidth;
+ private int mHeight;
+
+ // Projection matrix
+ private float[] mProjectionMatrix = new float[MATRIX_SIZE];
+
+ // Screen size for when we aren't bound to a texture
+ private int mScreenWidth;
+ private int mScreenHeight;
+
+ // GL programs
+ private int mDrawProgram;
+ private int mTextureProgram;
+ private int mOesTextureProgram;
+ private int mMeshProgram;
+
+ // GL buffer containing BOX_COORDINATES
+ private int mBoxCoordinates;
+
+ // Handle indices -- common
+ private static final int INDEX_POSITION = 0;
+ private static final int INDEX_MATRIX = 1;
+
+ // Handle indices -- draw
+ private static final int INDEX_COLOR = 2;
+
+ // Handle indices -- texture
+ private static final int INDEX_TEXTURE_MATRIX = 2;
+ private static final int INDEX_TEXTURE_SAMPLER = 3;
+ private static final int INDEX_ALPHA = 4;
+
+ // Handle indices -- mesh
+ private static final int INDEX_TEXTURE_COORD = 2;
+
+ private abstract static class ShaderParameter {
+ public int handle;
+ protected final String mName;
+
+ public ShaderParameter(String name) {
+ mName = name;
+ }
+
+ public abstract void loadHandle(int program);
+ }
+
+ private static class UniformShaderParameter extends ShaderParameter {
+ public UniformShaderParameter(String name) {
+ super(name);
+ }
+
+ @Override
+ public void loadHandle(int program) {
+ handle = GLES20.glGetUniformLocation(program, mName);
+ checkError();
+ }
+ }
+
+ private static class AttributeShaderParameter extends ShaderParameter {
+ public AttributeShaderParameter(String name) {
+ super(name);
+ }
+
+ @Override
+ public void loadHandle(int program) {
+ handle = GLES20.glGetAttribLocation(program, mName);
+ checkError();
+ }
+ }
+
+ ShaderParameter[] mDrawParameters = {
+ new AttributeShaderParameter(POSITION_ATTRIBUTE), // INDEX_POSITION
+ new UniformShaderParameter(MATRIX_UNIFORM), // INDEX_MATRIX
+ new UniformShaderParameter(COLOR_UNIFORM), // INDEX_COLOR
+ };
+ ShaderParameter[] mTextureParameters = {
+ new AttributeShaderParameter(POSITION_ATTRIBUTE), // INDEX_POSITION
+ new UniformShaderParameter(MATRIX_UNIFORM), // INDEX_MATRIX
+ new UniformShaderParameter(TEXTURE_MATRIX_UNIFORM), // INDEX_TEXTURE_MATRIX
+ new UniformShaderParameter(TEXTURE_SAMPLER_UNIFORM), // INDEX_TEXTURE_SAMPLER
+ new UniformShaderParameter(ALPHA_UNIFORM), // INDEX_ALPHA
+ };
+ ShaderParameter[] mOesTextureParameters = {
+ new AttributeShaderParameter(POSITION_ATTRIBUTE), // INDEX_POSITION
+ new UniformShaderParameter(MATRIX_UNIFORM), // INDEX_MATRIX
+ new UniformShaderParameter(TEXTURE_MATRIX_UNIFORM), // INDEX_TEXTURE_MATRIX
+ new UniformShaderParameter(TEXTURE_SAMPLER_UNIFORM), // INDEX_TEXTURE_SAMPLER
+ new UniformShaderParameter(ALPHA_UNIFORM), // INDEX_ALPHA
+ };
+ ShaderParameter[] mMeshParameters = {
+ new AttributeShaderParameter(POSITION_ATTRIBUTE), // INDEX_POSITION
+ new UniformShaderParameter(MATRIX_UNIFORM), // INDEX_MATRIX
+ new AttributeShaderParameter(TEXTURE_COORD_ATTRIBUTE), // INDEX_TEXTURE_COORD
+ new UniformShaderParameter(TEXTURE_SAMPLER_UNIFORM), // INDEX_TEXTURE_SAMPLER
+ new UniformShaderParameter(ALPHA_UNIFORM), // INDEX_ALPHA
+ };
+
+ private final IntArray mUnboundTextures = new IntArray();
+ private final IntArray mDeleteBuffers = new IntArray();
+
+ // Keep track of statistics for debugging
+ private int mCountDrawMesh = 0;
+ private int mCountTextureRect = 0;
+ private int mCountFillRect = 0;
+ private int mCountDrawLine = 0;
+
+ // Buffer for framebuffer IDs -- we keep track so we can switch the attached
+ // texture.
+ private int[] mFrameBuffer = new int[1];
+
+ // Bound textures.
+ private ArrayList<RawTexture> mTargetTextures = new ArrayList<RawTexture>();
+
+ // Temporary variables used within calculations
+ private final float[] mTempMatrix = new float[32];
+ private final float[] mTempColor = new float[4];
+ private final RectF mTempSourceRect = new RectF();
+ private final RectF mTempTargetRect = new RectF();
+ private final float[] mTempTextureMatrix = new float[MATRIX_SIZE];
+ private final int[] mTempIntArray = new int[1];
+
+ private static final GLId mGLId = new GLES20IdImpl();
+
+ public GLES20Canvas() {
+ Matrix.setIdentityM(mTempTextureMatrix, 0);
+ Matrix.setIdentityM(mMatrices, mCurrentMatrixIndex);
+ mAlphas[mCurrentAlphaIndex] = 1f;
+ mTargetTextures.add(null);
+
+ FloatBuffer boxBuffer = createBuffer(BOX_COORDINATES);
+ mBoxCoordinates = uploadBuffer(boxBuffer);
+
+ int drawVertexShader = loadShader(GLES20.GL_VERTEX_SHADER, DRAW_VERTEX_SHADER);
+ int textureVertexShader = loadShader(GLES20.GL_VERTEX_SHADER, TEXTURE_VERTEX_SHADER);
+ int meshVertexShader = loadShader(GLES20.GL_VERTEX_SHADER, MESH_VERTEX_SHADER);
+ int drawFragmentShader = loadShader(GLES20.GL_FRAGMENT_SHADER, DRAW_FRAGMENT_SHADER);
+ int textureFragmentShader = loadShader(GLES20.GL_FRAGMENT_SHADER, TEXTURE_FRAGMENT_SHADER);
+ int oesTextureFragmentShader = loadShader(GLES20.GL_FRAGMENT_SHADER,
+ OES_TEXTURE_FRAGMENT_SHADER);
+
+ mDrawProgram = assembleProgram(drawVertexShader, drawFragmentShader, mDrawParameters);
+ mTextureProgram = assembleProgram(textureVertexShader, textureFragmentShader,
+ mTextureParameters);
+ mOesTextureProgram = assembleProgram(textureVertexShader, oesTextureFragmentShader,
+ mOesTextureParameters);
+ mMeshProgram = assembleProgram(meshVertexShader, textureFragmentShader, mMeshParameters);
+ GLES20.glBlendFunc(GLES20.GL_ONE, GLES20.GL_ONE_MINUS_SRC_ALPHA);
+ checkError();
+ }
+
+ private static FloatBuffer createBuffer(float[] values) {
+ // First create an nio buffer, then create a VBO from it.
+ int size = values.length * FLOAT_SIZE;
+ FloatBuffer buffer = ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder())
+ .asFloatBuffer();
+ buffer.put(values, 0, values.length).position(0);
+ return buffer;
+ }
+
+ private int assembleProgram(int vertexShader, int fragmentShader, ShaderParameter[] params) {
+ int program = GLES20.glCreateProgram();
+ checkError();
+ if (program == 0) {
+ throw new RuntimeException("Cannot create GL program: " + GLES20.glGetError());
+ }
+ GLES20.glAttachShader(program, vertexShader);
+ checkError();
+ GLES20.glAttachShader(program, fragmentShader);
+ checkError();
+ GLES20.glLinkProgram(program);
+ checkError();
+ int[] mLinkStatus = mTempIntArray;
+ GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, mLinkStatus, 0);
+ if (mLinkStatus[0] != GLES20.GL_TRUE) {
+ Log.e(TAG, "Could not link program: ");
+ Log.e(TAG, GLES20.glGetProgramInfoLog(program));
+ GLES20.glDeleteProgram(program);
+ program = 0;
+ }
+ for (int i = 0; i < params.length; i++) {
+ params[i].loadHandle(program);
+ }
+ return program;
+ }
+
+ private static int loadShader(int type, String shaderCode) {
+ // create a vertex shader type (GLES20.GL_VERTEX_SHADER)
+ // or a fragment shader type (GLES20.GL_FRAGMENT_SHADER)
+ int shader = GLES20.glCreateShader(type);
+
+ // add the source code to the shader and compile it
+ GLES20.glShaderSource(shader, shaderCode);
+ checkError();
+ GLES20.glCompileShader(shader);
+ checkError();
+
+ return shader;
+ }
+
+ @Override
+ public void setSize(int width, int height) {
+ mWidth = width;
+ mHeight = height;
+ GLES20.glViewport(0, 0, mWidth, mHeight);
+ checkError();
+ Matrix.setIdentityM(mMatrices, mCurrentMatrixIndex);
+ Matrix.orthoM(mProjectionMatrix, 0, 0, width, 0, height, -1, 1);
+ if (getTargetTexture() == null) {
+ mScreenWidth = width;
+ mScreenHeight = height;
+ Matrix.translateM(mMatrices, mCurrentMatrixIndex, 0, height, 0);
+ Matrix.scaleM(mMatrices, mCurrentMatrixIndex, 1, -1, 1);
+ }
+ }
+
+ @Override
+ public void clearBuffer() {
+ GLES20.glClearColor(0f, 0f, 0f, 1f);
+ checkError();
+ GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
+ checkError();
+ }
+
+ @Override
+ public void clearBuffer(float[] argb) {
+ GLES20.glClearColor(argb[1], argb[2], argb[3], argb[0]);
+ checkError();
+ GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
+ checkError();
+ }
+
+ @Override
+ public float getAlpha() {
+ return mAlphas[mCurrentAlphaIndex];
+ }
+
+ @Override
+ public void setAlpha(float alpha) {
+ mAlphas[mCurrentAlphaIndex] = alpha;
+ }
+
+ @Override
+ public void multiplyAlpha(float alpha) {
+ setAlpha(getAlpha() * alpha);
+ }
+
+ @Override
+ public void translate(float x, float y, float z) {
+ Matrix.translateM(mMatrices, mCurrentMatrixIndex, x, y, z);
+ }
+
+ // This is a faster version of translate(x, y, z) because
+ // (1) we knows z = 0, (2) we inline the Matrix.translateM call,
+ // (3) we unroll the loop
+ @Override
+ public void translate(float x, float y) {
+ int index = mCurrentMatrixIndex;
+ float[] m = mMatrices;
+ m[index + 12] += m[index + 0] * x + m[index + 4] * y;
+ m[index + 13] += m[index + 1] * x + m[index + 5] * y;
+ m[index + 14] += m[index + 2] * x + m[index + 6] * y;
+ m[index + 15] += m[index + 3] * x + m[index + 7] * y;
+ }
+
+ @Override
+ public void scale(float sx, float sy, float sz) {
+ Matrix.scaleM(mMatrices, mCurrentMatrixIndex, sx, sy, sz);
+ }
+
+ @Override
+ public void rotate(float angle, float x, float y, float z) {
+ if (angle == 0f) {
+ return;
+ }
+ float[] temp = mTempMatrix;
+ Matrix.setRotateM(temp, 0, angle, x, y, z);
+ float[] matrix = mMatrices;
+ int index = mCurrentMatrixIndex;
+ Matrix.multiplyMM(temp, MATRIX_SIZE, matrix, index, temp, 0);
+ System.arraycopy(temp, MATRIX_SIZE, matrix, index, MATRIX_SIZE);
+ }
+
+ @Override
+ public void multiplyMatrix(float[] matrix, int offset) {
+ float[] temp = mTempMatrix;
+ float[] currentMatrix = mMatrices;
+ int index = mCurrentMatrixIndex;
+ Matrix.multiplyMM(temp, 0, currentMatrix, index, matrix, offset);
+ System.arraycopy(temp, 0, currentMatrix, index, 16);
+ }
+
+ @Override
+ public void save() {
+ save(SAVE_FLAG_ALL);
+ }
+
+ @Override
+ public void save(int saveFlags) {
+ boolean saveAlpha = (saveFlags & SAVE_FLAG_ALPHA) == SAVE_FLAG_ALPHA;
+ if (saveAlpha) {
+ float currentAlpha = getAlpha();
+ mCurrentAlphaIndex++;
+ if (mAlphas.length <= mCurrentAlphaIndex) {
+ mAlphas = Arrays.copyOf(mAlphas, mAlphas.length * 2);
+ }
+ mAlphas[mCurrentAlphaIndex] = currentAlpha;
+ }
+ boolean saveMatrix = (saveFlags & SAVE_FLAG_MATRIX) == SAVE_FLAG_MATRIX;
+ if (saveMatrix) {
+ int currentIndex = mCurrentMatrixIndex;
+ mCurrentMatrixIndex += MATRIX_SIZE;
+ if (mMatrices.length <= mCurrentMatrixIndex) {
+ mMatrices = Arrays.copyOf(mMatrices, mMatrices.length * 2);
+ }
+ System.arraycopy(mMatrices, currentIndex, mMatrices, mCurrentMatrixIndex, MATRIX_SIZE);
+ }
+ mSaveFlags.add(saveFlags);
+ }
+
+ @Override
+ public void restore() {
+ int restoreFlags = mSaveFlags.removeLast();
+ boolean restoreAlpha = (restoreFlags & SAVE_FLAG_ALPHA) == SAVE_FLAG_ALPHA;
+ if (restoreAlpha) {
+ mCurrentAlphaIndex--;
+ }
+ boolean restoreMatrix = (restoreFlags & SAVE_FLAG_MATRIX) == SAVE_FLAG_MATRIX;
+ if (restoreMatrix) {
+ mCurrentMatrixIndex -= MATRIX_SIZE;
+ }
+ }
+
+ @Override
+ public void drawLine(float x1, float y1, float x2, float y2, GLPaint paint) {
+ draw(GLES20.GL_LINE_STRIP, OFFSET_DRAW_LINE, COUNT_LINE_VERTEX, x1, y1, x2 - x1, y2 - y1,
+ paint);
+ mCountDrawLine++;
+ }
+
+ @Override
+ public void drawRect(float x, float y, float width, float height, GLPaint paint) {
+ draw(GLES20.GL_LINE_LOOP, OFFSET_DRAW_RECT, COUNT_RECT_VERTEX, x, y, width, height, paint);
+ mCountDrawLine++;
+ }
+
+ private void draw(int type, int offset, int count, float x, float y, float width, float height,
+ GLPaint paint) {
+ draw(type, offset, count, x, y, width, height, paint.getColor(), paint.getLineWidth());
+ }
+
+ private void draw(int type, int offset, int count, float x, float y, float width, float height,
+ int color, float lineWidth) {
+ prepareDraw(offset, color, lineWidth);
+ draw(mDrawParameters, type, count, x, y, width, height);
+ }
+
+ private void prepareDraw(int offset, int color, float lineWidth) {
+ GLES20.glUseProgram(mDrawProgram);
+ checkError();
+ if (lineWidth > 0) {
+ GLES20.glLineWidth(lineWidth);
+ checkError();
+ }
+ float[] colorArray = getColor(color);
+ boolean blendingEnabled = (colorArray[3] < 1f);
+ enableBlending(blendingEnabled);
+ if (blendingEnabled) {
+ GLES20.glBlendColor(colorArray[0], colorArray[1], colorArray[2], colorArray[3]);
+ checkError();
+ }
+
+ GLES20.glUniform4fv(mDrawParameters[INDEX_COLOR].handle, 1, colorArray, 0);
+ setPosition(mDrawParameters, offset);
+ checkError();
+ }
+
+ private float[] getColor(int color) {
+ float alpha = ((color >>> 24) & 0xFF) / 255f * getAlpha();
+ float red = ((color >>> 16) & 0xFF) / 255f * alpha;
+ float green = ((color >>> 8) & 0xFF) / 255f * alpha;
+ float blue = (color & 0xFF) / 255f * alpha;
+ mTempColor[0] = red;
+ mTempColor[1] = green;
+ mTempColor[2] = blue;
+ mTempColor[3] = alpha;
+ return mTempColor;
+ }
+
+ private void enableBlending(boolean enableBlending) {
+ if (enableBlending) {
+ GLES20.glEnable(GLES20.GL_BLEND);
+ checkError();
+ } else {
+ GLES20.glDisable(GLES20.GL_BLEND);
+ checkError();
+ }
+ }
+
+ private void setPosition(ShaderParameter[] params, int offset) {
+ GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, mBoxCoordinates);
+ checkError();
+ GLES20.glVertexAttribPointer(params[INDEX_POSITION].handle, COORDS_PER_VERTEX,
+ GLES20.GL_FLOAT, false, VERTEX_STRIDE, offset * VERTEX_STRIDE);
+ checkError();
+ GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0);
+ checkError();
+ }
+
+ private void draw(ShaderParameter[] params, int type, int count, float x, float y, float width,
+ float height) {
+ setMatrix(params, x, y, width, height);
+ int positionHandle = params[INDEX_POSITION].handle;
+ GLES20.glEnableVertexAttribArray(positionHandle);
+ checkError();
+ GLES20.glDrawArrays(type, 0, count);
+ checkError();
+ GLES20.glDisableVertexAttribArray(positionHandle);
+ checkError();
+ }
+
+ private void setMatrix(ShaderParameter[] params, float x, float y, float width, float height) {
+ Matrix.translateM(mTempMatrix, 0, mMatrices, mCurrentMatrixIndex, x, y, 0f);
+ Matrix.scaleM(mTempMatrix, 0, width, height, 1f);
+ Matrix.multiplyMM(mTempMatrix, MATRIX_SIZE, mProjectionMatrix, 0, mTempMatrix, 0);
+ GLES20.glUniformMatrix4fv(params[INDEX_MATRIX].handle, 1, false, mTempMatrix, MATRIX_SIZE);
+ checkError();
+ }
+
+ @Override
+ public void fillRect(float x, float y, float width, float height, int color) {
+ draw(GLES20.GL_TRIANGLE_STRIP, OFFSET_FILL_RECT, COUNT_FILL_VERTEX, x, y, width, height,
+ color, 0f);
+ mCountFillRect++;
+ }
+
+ @Override
+ public void drawTexture(BasicTexture texture, int x, int y, int width, int height) {
+ if (width <= 0 || height <= 0) {
+ return;
+ }
+ copyTextureCoordinates(texture, mTempSourceRect);
+ mTempTargetRect.set(x, y, x + width, y + height);
+ convertCoordinate(mTempSourceRect, mTempTargetRect, texture);
+ drawTextureRect(texture, mTempSourceRect, mTempTargetRect);
+ }
+
+ private static void copyTextureCoordinates(BasicTexture texture, RectF outRect) {
+ int left = 0;
+ int top = 0;
+ int right = texture.getWidth();
+ int bottom = texture.getHeight();
+ if (texture.hasBorder()) {
+ left = 1;
+ top = 1;
+ right -= 1;
+ bottom -= 1;
+ }
+ outRect.set(left, top, right, bottom);
+ }
+
+ @Override
+ public void drawTexture(BasicTexture texture, RectF source, RectF target) {
+ if (target.width() <= 0 || target.height() <= 0) {
+ return;
+ }
+ mTempSourceRect.set(source);
+ mTempTargetRect.set(target);
+
+ convertCoordinate(mTempSourceRect, mTempTargetRect, texture);
+ drawTextureRect(texture, mTempSourceRect, mTempTargetRect);
+ }
+
+ @Override
+ public void drawTexture(BasicTexture texture, float[] textureTransform, int x, int y, int w,
+ int h) {
+ if (w <= 0 || h <= 0) {
+ return;
+ }
+ mTempTargetRect.set(x, y, x + w, y + h);
+ drawTextureRect(texture, textureTransform, mTempTargetRect);
+ }
+
+ private void drawTextureRect(BasicTexture texture, RectF source, RectF target) {
+ setTextureMatrix(source);
+ drawTextureRect(texture, mTempTextureMatrix, target);
+ }
+
+ private void setTextureMatrix(RectF source) {
+ mTempTextureMatrix[0] = source.width();
+ mTempTextureMatrix[5] = source.height();
+ mTempTextureMatrix[12] = source.left;
+ mTempTextureMatrix[13] = source.top;
+ }
+
+ // This function changes the source coordinate to the texture coordinates.
+ // It also clips the source and target coordinates if it is beyond the
+ // bound of the texture.
+ private static void convertCoordinate(RectF source, RectF target, BasicTexture texture) {
+ int width = texture.getWidth();
+ int height = texture.getHeight();
+ int texWidth = texture.getTextureWidth();
+ int texHeight = texture.getTextureHeight();
+ // Convert to texture coordinates
+ source.left /= texWidth;
+ source.right /= texWidth;
+ source.top /= texHeight;
+ source.bottom /= texHeight;
+
+ // Clip if the rendering range is beyond the bound of the texture.
+ float xBound = (float) width / texWidth;
+ if (source.right > xBound) {
+ target.right = target.left + target.width() * (xBound - source.left) / source.width();
+ source.right = xBound;
+ }
+ float yBound = (float) height / texHeight;
+ if (source.bottom > yBound) {
+ target.bottom = target.top + target.height() * (yBound - source.top) / source.height();
+ source.bottom = yBound;
+ }
+ }
+
+ private void drawTextureRect(BasicTexture texture, float[] textureMatrix, RectF target) {
+ ShaderParameter[] params = prepareTexture(texture);
+ setPosition(params, OFFSET_FILL_RECT);
+ GLES20.glUniformMatrix4fv(params[INDEX_TEXTURE_MATRIX].handle, 1, false, textureMatrix, 0);
+ checkError();
+ if (texture.isFlippedVertically()) {
+ save(SAVE_FLAG_MATRIX);
+ translate(0, target.centerY());
+ scale(1, -1, 1);
+ translate(0, -target.centerY());
+ }
+ draw(params, GLES20.GL_TRIANGLE_STRIP, COUNT_FILL_VERTEX, target.left, target.top,
+ target.width(), target.height());
+ if (texture.isFlippedVertically()) {
+ restore();
+ }
+ mCountTextureRect++;
+ }
+
+ private ShaderParameter[] prepareTexture(BasicTexture texture) {
+ ShaderParameter[] params;
+ int program;
+ if (texture.getTarget() == GLES20.GL_TEXTURE_2D) {
+ params = mTextureParameters;
+ program = mTextureProgram;
+ } else {
+ params = mOesTextureParameters;
+ program = mOesTextureProgram;
+ }
+ prepareTexture(texture, program, params);
+ return params;
+ }
+
+ private void prepareTexture(BasicTexture texture, int program, ShaderParameter[] params) {
+ GLES20.glUseProgram(program);
+ checkError();
+ enableBlending(!texture.isOpaque() || getAlpha() < OPAQUE_ALPHA);
+ GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
+ checkError();
+ texture.onBind(this);
+ GLES20.glBindTexture(texture.getTarget(), texture.getId());
+ checkError();
+ GLES20.glUniform1i(params[INDEX_TEXTURE_SAMPLER].handle, 0);
+ checkError();
+ GLES20.glUniform1f(params[INDEX_ALPHA].handle, getAlpha());
+ checkError();
+ }
+
+ @Override
+ public void drawMesh(BasicTexture texture, int x, int y, int xyBuffer, int uvBuffer,
+ int indexBuffer, int indexCount) {
+ prepareTexture(texture, mMeshProgram, mMeshParameters);
+
+ GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, indexBuffer);
+ checkError();
+
+ GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, xyBuffer);
+ checkError();
+ int positionHandle = mMeshParameters[INDEX_POSITION].handle;
+ GLES20.glVertexAttribPointer(positionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false,
+ VERTEX_STRIDE, 0);
+ checkError();
+
+ GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, uvBuffer);
+ checkError();
+ int texCoordHandle = mMeshParameters[INDEX_TEXTURE_COORD].handle;
+ GLES20.glVertexAttribPointer(texCoordHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT,
+ false, VERTEX_STRIDE, 0);
+ checkError();
+ GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0);
+ checkError();
+
+ GLES20.glEnableVertexAttribArray(positionHandle);
+ checkError();
+ GLES20.glEnableVertexAttribArray(texCoordHandle);
+ checkError();
+
+ setMatrix(mMeshParameters, x, y, 1, 1);
+ GLES20.glDrawElements(GLES20.GL_TRIANGLE_STRIP, indexCount, GLES20.GL_UNSIGNED_BYTE, 0);
+ checkError();
+
+ GLES20.glDisableVertexAttribArray(positionHandle);
+ checkError();
+ GLES20.glDisableVertexAttribArray(texCoordHandle);
+ checkError();
+ GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, 0);
+ checkError();
+ mCountDrawMesh++;
+ }
+
+ @Override
+ public void drawMixed(BasicTexture texture, int toColor, float ratio, int x, int y, int w, int h) {
+ copyTextureCoordinates(texture, mTempSourceRect);
+ mTempTargetRect.set(x, y, x + w, y + h);
+ drawMixed(texture, toColor, ratio, mTempSourceRect, mTempTargetRect);
+ }
+
+ @Override
+ public void drawMixed(BasicTexture texture, int toColor, float ratio, RectF source, RectF target) {
+ if (target.width() <= 0 || target.height() <= 0) {
+ return;
+ }
+ save(SAVE_FLAG_ALPHA);
+
+ float currentAlpha = getAlpha();
+ float cappedRatio = Math.min(1f, Math.max(0f, ratio));
+
+ float textureAlpha = (1f - cappedRatio) * currentAlpha;
+ setAlpha(textureAlpha);
+ drawTexture(texture, source, target);
+
+ float colorAlpha = cappedRatio * currentAlpha;
+ setAlpha(colorAlpha);
+ fillRect(target.left, target.top, target.width(), target.height(), toColor);
+
+ restore();
+ }
+
+ @Override
+ public boolean unloadTexture(BasicTexture texture) {
+ boolean unload = texture.isLoaded();
+ if (unload) {
+ synchronized (mUnboundTextures) {
+ mUnboundTextures.add(texture.getId());
+ }
+ }
+ return unload;
+ }
+
+ @Override
+ public void deleteBuffer(int bufferId) {
+ synchronized (mUnboundTextures) {
+ mDeleteBuffers.add(bufferId);
+ }
+ }
+
+ @Override
+ public void deleteRecycledResources() {
+ synchronized (mUnboundTextures) {
+ IntArray ids = mUnboundTextures;
+ if (mUnboundTextures.size() > 0) {
+ mGLId.glDeleteTextures(null, ids.size(), ids.getInternalArray(), 0);
+ ids.clear();
+ }
+
+ ids = mDeleteBuffers;
+ if (ids.size() > 0) {
+ mGLId.glDeleteBuffers(null, ids.size(), ids.getInternalArray(), 0);
+ ids.clear();
+ }
+ }
+ }
+
+ @Override
+ public void dumpStatisticsAndClear() {
+ String line = String.format("MESH:%d, TEX_RECT:%d, FILL_RECT:%d, LINE:%d", mCountDrawMesh,
+ mCountTextureRect, mCountFillRect, mCountDrawLine);
+ mCountDrawMesh = 0;
+ mCountTextureRect = 0;
+ mCountFillRect = 0;
+ mCountDrawLine = 0;
+ Log.d(TAG, line);
+ }
+
+ @Override
+ public void endRenderTarget() {
+ RawTexture oldTexture = mTargetTextures.remove(mTargetTextures.size() - 1);
+ RawTexture texture = getTargetTexture();
+ setRenderTarget(oldTexture, texture);
+ restore(); // restore matrix and alpha
+ }
+
+ @Override
+ public void beginRenderTarget(RawTexture texture) {
+ save(); // save matrix and alpha and blending
+ RawTexture oldTexture = getTargetTexture();
+ mTargetTextures.add(texture);
+ setRenderTarget(oldTexture, texture);
+ }
+
+ private RawTexture getTargetTexture() {
+ return mTargetTextures.get(mTargetTextures.size() - 1);
+ }
+
+ private void setRenderTarget(BasicTexture oldTexture, RawTexture texture) {
+ if (oldTexture == null && texture != null) {
+ GLES20.glGenFramebuffers(1, mFrameBuffer, 0);
+ checkError();
+ GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, mFrameBuffer[0]);
+ checkError();
+ } else if (oldTexture != null && texture == null) {
+ GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
+ checkError();
+ GLES20.glDeleteFramebuffers(1, mFrameBuffer, 0);
+ checkError();
+ }
+
+ if (texture == null) {
+ setSize(mScreenWidth, mScreenHeight);
+ } else {
+ setSize(texture.getWidth(), texture.getHeight());
+
+ if (!texture.isLoaded()) {
+ texture.prepare(this);
+ }
+
+ GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0,
+ texture.getTarget(), texture.getId(), 0);
+ checkError();
+
+ checkFramebufferStatus();
+ }
+ }
+
+ private static void checkFramebufferStatus() {
+ int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
+ if (status != GLES20.GL_FRAMEBUFFER_COMPLETE) {
+ String msg = "";
+ switch (status) {
+ case GLES20.GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
+ msg = "GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT";
+ break;
+ case GLES20.GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
+ msg = "GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS";
+ break;
+ case GLES20.GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
+ msg = "GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT";
+ break;
+ case GLES20.GL_FRAMEBUFFER_UNSUPPORTED:
+ msg = "GL_FRAMEBUFFER_UNSUPPORTED";
+ break;
+ }
+ throw new RuntimeException(msg + ":" + Integer.toHexString(status));
+ }
+ }
+
+ @Override
+ public void setTextureParameters(BasicTexture texture) {
+ int target = texture.getTarget();
+ GLES20.glBindTexture(target, texture.getId());
+ checkError();
+ GLES20.glTexParameteri(target, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
+ GLES20.glTexParameteri(target, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
+ GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
+ GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
+ }
+
+ @Override
+ public void initializeTextureSize(BasicTexture texture, int format, int type) {
+ int target = texture.getTarget();
+ GLES20.glBindTexture(target, texture.getId());
+ checkError();
+ int width = texture.getTextureWidth();
+ int height = texture.getTextureHeight();
+ GLES20.glTexImage2D(target, 0, format, width, height, 0, format, type, null);
+ }
+
+ @Override
+ public void initializeTexture(BasicTexture texture, Bitmap bitmap) {
+ int target = texture.getTarget();
+ GLES20.glBindTexture(target, texture.getId());
+ checkError();
+ GLUtils.texImage2D(target, 0, bitmap, 0);
+ }
+
+ @Override
+ public void texSubImage2D(BasicTexture texture, int xOffset, int yOffset, Bitmap bitmap,
+ int format, int type) {
+ int target = texture.getTarget();
+ GLES20.glBindTexture(target, texture.getId());
+ checkError();
+ GLUtils.texSubImage2D(target, 0, xOffset, yOffset, bitmap, format, type);
+ }
+
+ @Override
+ public int uploadBuffer(FloatBuffer buf) {
+ return uploadBuffer(buf, FLOAT_SIZE);
+ }
+
+ @Override
+ public int uploadBuffer(ByteBuffer buf) {
+ return uploadBuffer(buf, 1);
+ }
+
+ private int uploadBuffer(Buffer buffer, int elementSize) {
+ mGLId.glGenBuffers(1, mTempIntArray, 0);
+ checkError();
+ int bufferId = mTempIntArray[0];
+ GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, bufferId);
+ checkError();
+ GLES20.glBufferData(GLES20.GL_ARRAY_BUFFER, buffer.capacity() * elementSize, buffer,
+ GLES20.GL_STATIC_DRAW);
+ checkError();
+ return bufferId;
+ }
+
+ public static void checkError() {
+ int error = GLES20.glGetError();
+ if (error != 0) {
+ Throwable t = new Throwable();
+ Log.e(TAG, "GL error: " + error, t);
+ }
+ }
+
+ @SuppressWarnings("unused")
+ private static void printMatrix(String message, float[] m, int offset) {
+ StringBuilder b = new StringBuilder(message);
+ for (int i = 0; i < MATRIX_SIZE; i++) {
+ b.append(' ');
+ if (i % 4 == 0) {
+ b.append('\n');
+ }
+ b.append(m[offset + i]);
+ }
+ Log.v(TAG, b.toString());
+ }
+
+ @Override
+ public void recoverFromLightCycle() {
+ GLES20.glViewport(0, 0, mWidth, mHeight);
+ GLES20.glDisable(GLES20.GL_DEPTH_TEST);
+ GLES20.glBlendFunc(GLES20.GL_ONE, GLES20.GL_ONE_MINUS_SRC_ALPHA);
+ checkError();
+ }
+
+ @Override
+ public void getBounds(Rect bounds, int x, int y, int width, int height) {
+ Matrix.translateM(mTempMatrix, 0, mMatrices, mCurrentMatrixIndex, x, y, 0f);
+ Matrix.scaleM(mTempMatrix, 0, width, height, 1f);
+ Matrix.multiplyMV(mTempMatrix, MATRIX_SIZE, mTempMatrix, 0, BOUNDS_COORDINATES, 0);
+ Matrix.multiplyMV(mTempMatrix, MATRIX_SIZE + 4, mTempMatrix, 0, BOUNDS_COORDINATES, 4);
+ bounds.left = Math.round(mTempMatrix[MATRIX_SIZE]);
+ bounds.right = Math.round(mTempMatrix[MATRIX_SIZE + 4]);
+ bounds.top = Math.round(mTempMatrix[MATRIX_SIZE + 1]);
+ bounds.bottom = Math.round(mTempMatrix[MATRIX_SIZE + 5]);
+ bounds.sort();
+ }
+
+ @Override
+ public GLId getGLId() {
+ return mGLId;
+ }
+}
diff --git a/src/com/android/gallery3d/glrenderer/GLES20IdImpl.java b/src/com/android/gallery3d/glrenderer/GLES20IdImpl.java
new file mode 100644
index 0000000..6cd7149
--- /dev/null
+++ b/src/com/android/gallery3d/glrenderer/GLES20IdImpl.java
@@ -0,0 +1,42 @@
+package com.android.gallery3d.glrenderer;
+
+import android.opengl.GLES20;
+
+import javax.microedition.khronos.opengles.GL11;
+import javax.microedition.khronos.opengles.GL11ExtensionPack;
+
+public class GLES20IdImpl implements GLId {
+ private final int[] mTempIntArray = new int[1];
+
+ @Override
+ public int generateTexture() {
+ GLES20.glGenTextures(1, mTempIntArray, 0);
+ GLES20Canvas.checkError();
+ return mTempIntArray[0];
+ }
+
+ @Override
+ public void glGenBuffers(int n, int[] buffers, int offset) {
+ GLES20.glGenBuffers(n, buffers, offset);
+ GLES20Canvas.checkError();
+ }
+
+ @Override
+ public void glDeleteTextures(GL11 gl, int n, int[] textures, int offset) {
+ GLES20.glDeleteTextures(n, textures, offset);
+ GLES20Canvas.checkError();
+ }
+
+
+ @Override
+ public void glDeleteBuffers(GL11 gl, int n, int[] buffers, int offset) {
+ GLES20.glDeleteBuffers(n, buffers, offset);
+ GLES20Canvas.checkError();
+ }
+
+ @Override
+ public void glDeleteFramebuffers(GL11ExtensionPack gl11ep, int n, int[] buffers, int offset) {
+ GLES20.glDeleteFramebuffers(n, buffers, offset);
+ GLES20Canvas.checkError();
+ }
+}
diff --git a/src/com/android/gallery3d/glrenderer/GLId.java b/src/com/android/gallery3d/glrenderer/GLId.java
new file mode 100644
index 0000000..3cec558
--- /dev/null
+++ b/src/com/android/gallery3d/glrenderer/GLId.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.glrenderer;
+
+import javax.microedition.khronos.opengles.GL11;
+import javax.microedition.khronos.opengles.GL11ExtensionPack;
+
+// This mimics corresponding GL functions.
+public interface GLId {
+ public int generateTexture();
+
+ public void glGenBuffers(int n, int[] buffers, int offset);
+
+ public void glDeleteTextures(GL11 gl, int n, int[] textures, int offset);
+
+ public void glDeleteBuffers(GL11 gl, int n, int[] buffers, int offset);
+
+ public void glDeleteFramebuffers(GL11ExtensionPack gl11ep, int n, int[] buffers, int offset);
+}
diff --git a/src/com/android/gallery3d/glrenderer/GLPaint.java b/src/com/android/gallery3d/glrenderer/GLPaint.java
new file mode 100644
index 0000000..16b2206
--- /dev/null
+++ b/src/com/android/gallery3d/glrenderer/GLPaint.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.glrenderer;
+
+import junit.framework.Assert;
+
+public class GLPaint {
+ private float mLineWidth = 1f;
+ private int mColor = 0;
+
+ public void setColor(int color) {
+ mColor = color;
+ }
+
+ public int getColor() {
+ return mColor;
+ }
+
+ public void setLineWidth(float width) {
+ Assert.assertTrue(width >= 0);
+ mLineWidth = width;
+ }
+
+ public float getLineWidth() {
+ return mLineWidth;
+ }
+}
diff --git a/src/com/android/gallery3d/glrenderer/RawTexture.java b/src/com/android/gallery3d/glrenderer/RawTexture.java
new file mode 100644
index 0000000..93f0fdf
--- /dev/null
+++ b/src/com/android/gallery3d/glrenderer/RawTexture.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.glrenderer;
+
+import android.util.Log;
+
+import javax.microedition.khronos.opengles.GL11;
+
+public class RawTexture extends BasicTexture {
+ private static final String TAG = "RawTexture";
+
+ private final boolean mOpaque;
+ private boolean mIsFlipped;
+
+ public RawTexture(int width, int height, boolean opaque) {
+ mOpaque = opaque;
+ setSize(width, height);
+ }
+
+ @Override
+ public boolean isOpaque() {
+ return mOpaque;
+ }
+
+ @Override
+ public boolean isFlippedVertically() {
+ return mIsFlipped;
+ }
+
+ public void setIsFlippedVertically(boolean isFlipped) {
+ mIsFlipped = isFlipped;
+ }
+
+ protected void prepare(GLCanvas canvas) {
+ GLId glId = canvas.getGLId();
+ mId = glId.generateTexture();
+ canvas.initializeTextureSize(this, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE);
+ canvas.setTextureParameters(this);
+ mState = STATE_LOADED;
+ setAssociatedCanvas(canvas);
+ }
+
+ @Override
+ protected boolean onBind(GLCanvas canvas) {
+ if (isLoaded()) return true;
+ Log.w(TAG, "lost the content due to context change");
+ return false;
+ }
+
+ @Override
+ public void yield() {
+ // we cannot free the texture because we have no backup.
+ }
+
+ @Override
+ protected int getTarget() {
+ return GL11.GL_TEXTURE_2D;
+ }
+}
diff --git a/src/com/android/gallery3d/glrenderer/Texture.java b/src/com/android/gallery3d/glrenderer/Texture.java
new file mode 100644
index 0000000..3dcae4a
--- /dev/null
+++ b/src/com/android/gallery3d/glrenderer/Texture.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.glrenderer;
+
+
+// Texture is a rectangular image which can be drawn on GLCanvas.
+// The isOpaque() function gives a hint about whether the texture is opaque,
+// so the drawing can be done faster.
+//
+// This is the current texture hierarchy:
+//
+// Texture
+// -- ColorTexture
+// -- FadeInTexture
+// -- BasicTexture
+// -- UploadedTexture
+// -- BitmapTexture
+// -- Tile
+// -- ResourceTexture
+// -- NinePatchTexture
+// -- CanvasTexture
+// -- StringTexture
+//
+public interface Texture {
+ public int getWidth();
+ public int getHeight();
+ public void draw(GLCanvas canvas, int x, int y);
+ public void draw(GLCanvas canvas, int x, int y, int w, int h);
+ public boolean isOpaque();
+}
diff --git a/src/com/android/gallery3d/glrenderer/UploadedTexture.java b/src/com/android/gallery3d/glrenderer/UploadedTexture.java
new file mode 100644
index 0000000..f41a979
--- /dev/null
+++ b/src/com/android/gallery3d/glrenderer/UploadedTexture.java
@@ -0,0 +1,298 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.glrenderer;
+
+import android.graphics.Bitmap;
+import android.graphics.Bitmap.Config;
+import android.opengl.GLUtils;
+
+import junit.framework.Assert;
+
+import java.util.HashMap;
+
+import javax.microedition.khronos.opengles.GL11;
+
+// UploadedTextures use a Bitmap for the content of the texture.
+//
+// Subclasses should implement onGetBitmap() to provide the Bitmap and
+// implement onFreeBitmap(mBitmap) which will be called when the Bitmap
+// is not needed anymore.
+//
+// isContentValid() is meaningful only when the isLoaded() returns true.
+// It means whether the content needs to be updated.
+//
+// The user of this class should call recycle() when the texture is not
+// needed anymore.
+//
+// By default an UploadedTexture is opaque (so it can be drawn faster without
+// blending). The user or subclass can override it using setOpaque().
+public abstract class UploadedTexture extends BasicTexture {
+
+ // To prevent keeping allocation the borders, we store those used borders here.
+ // Since the length will be power of two, it won't use too much memory.
+ private static HashMap<BorderKey, Bitmap> sBorderLines =
+ new HashMap<BorderKey, Bitmap>();
+ private static BorderKey sBorderKey = new BorderKey();
+
+ @SuppressWarnings("unused")
+ private static final String TAG = "Texture";
+ private boolean mContentValid = true;
+
+ // indicate this textures is being uploaded in background
+ private boolean mIsUploading = false;
+ private boolean mOpaque = true;
+ private boolean mThrottled = false;
+ private static int sUploadedCount;
+ private static final int UPLOAD_LIMIT = 100;
+
+ protected Bitmap mBitmap;
+ private int mBorder;
+
+ protected UploadedTexture() {
+ this(false);
+ }
+
+ protected UploadedTexture(boolean hasBorder) {
+ super(null, 0, STATE_UNLOADED);
+ if (hasBorder) {
+ setBorder(true);
+ mBorder = 1;
+ }
+ }
+
+ protected void setIsUploading(boolean uploading) {
+ mIsUploading = uploading;
+ }
+
+ public boolean isUploading() {
+ return mIsUploading;
+ }
+
+ private static class BorderKey implements Cloneable {
+ public boolean vertical;
+ public Config config;
+ public int length;
+
+ @Override
+ public int hashCode() {
+ int x = config.hashCode() ^ length;
+ return vertical ? x : -x;
+ }
+
+ @Override
+ public boolean equals(Object object) {
+ if (!(object instanceof BorderKey)) return false;
+ BorderKey o = (BorderKey) object;
+ return vertical == o.vertical
+ && config == o.config && length == o.length;
+ }
+
+ @Override
+ public BorderKey clone() {
+ try {
+ return (BorderKey) super.clone();
+ } catch (CloneNotSupportedException e) {
+ throw new AssertionError(e);
+ }
+ }
+ }
+
+ protected void setThrottled(boolean throttled) {
+ mThrottled = throttled;
+ }
+
+ private static Bitmap getBorderLine(
+ boolean vertical, Config config, int length) {
+ BorderKey key = sBorderKey;
+ key.vertical = vertical;
+ key.config = config;
+ key.length = length;
+ Bitmap bitmap = sBorderLines.get(key);
+ if (bitmap == null) {
+ bitmap = vertical
+ ? Bitmap.createBitmap(1, length, config)
+ : Bitmap.createBitmap(length, 1, config);
+ sBorderLines.put(key.clone(), bitmap);
+ }
+ return bitmap;
+ }
+
+ private Bitmap getBitmap() {
+ if (mBitmap == null) {
+ mBitmap = onGetBitmap();
+ int w = mBitmap.getWidth() + mBorder * 2;
+ int h = mBitmap.getHeight() + mBorder * 2;
+ if (mWidth == UNSPECIFIED) {
+ setSize(w, h);
+ }
+ }
+ return mBitmap;
+ }
+
+ private void freeBitmap() {
+ Assert.assertTrue(mBitmap != null);
+ onFreeBitmap(mBitmap);
+ mBitmap = null;
+ }
+
+ @Override
+ public int getWidth() {
+ if (mWidth == UNSPECIFIED) getBitmap();
+ return mWidth;
+ }
+
+ @Override
+ public int getHeight() {
+ if (mWidth == UNSPECIFIED) getBitmap();
+ return mHeight;
+ }
+
+ protected abstract Bitmap onGetBitmap();
+
+ protected abstract void onFreeBitmap(Bitmap bitmap);
+
+ protected void invalidateContent() {
+ if (mBitmap != null) freeBitmap();
+ mContentValid = false;
+ mWidth = UNSPECIFIED;
+ mHeight = UNSPECIFIED;
+ }
+
+ /**
+ * Whether the content on GPU is valid.
+ */
+ public boolean isContentValid() {
+ return isLoaded() && mContentValid;
+ }
+
+ /**
+ * Updates the content on GPU's memory.
+ * @param canvas
+ */
+ public void updateContent(GLCanvas canvas) {
+ if (!isLoaded()) {
+ if (mThrottled && ++sUploadedCount > UPLOAD_LIMIT) {
+ return;
+ }
+ uploadToCanvas(canvas);
+ } else if (!mContentValid) {
+ Bitmap bitmap = getBitmap();
+ int format = GLUtils.getInternalFormat(bitmap);
+ int type = GLUtils.getType(bitmap);
+ canvas.texSubImage2D(this, mBorder, mBorder, bitmap, format, type);
+ freeBitmap();
+ mContentValid = true;
+ }
+ }
+
+ public static void resetUploadLimit() {
+ sUploadedCount = 0;
+ }
+
+ public static boolean uploadLimitReached() {
+ return sUploadedCount > UPLOAD_LIMIT;
+ }
+
+ private void uploadToCanvas(GLCanvas canvas) {
+
+ Bitmap bitmap = getBitmap();
+ if (bitmap != null) {
+ try {
+ int bWidth = bitmap.getWidth();
+ int bHeight = bitmap.getHeight();
+ int width = bWidth + mBorder * 2;
+ int height = bHeight + mBorder * 2;
+ int texWidth = getTextureWidth();
+ int texHeight = getTextureHeight();
+
+ Assert.assertTrue(bWidth <= texWidth && bHeight <= texHeight);
+
+ // Upload the bitmap to a new texture.
+ mId = canvas.getGLId().generateTexture();
+ canvas.setTextureParameters(this);
+
+ if (bWidth == texWidth && bHeight == texHeight) {
+ canvas.initializeTexture(this, bitmap);
+ } else {
+ int format = GLUtils.getInternalFormat(bitmap);
+ int type = GLUtils.getType(bitmap);
+ Config config = bitmap.getConfig();
+
+ canvas.initializeTextureSize(this, format, type);
+ canvas.texSubImage2D(this, mBorder, mBorder, bitmap, format, type);
+
+ if (mBorder > 0) {
+ // Left border
+ Bitmap line = getBorderLine(true, config, texHeight);
+ canvas.texSubImage2D(this, 0, 0, line, format, type);
+
+ // Top border
+ line = getBorderLine(false, config, texWidth);
+ canvas.texSubImage2D(this, 0, 0, line, format, type);
+ }
+
+ // Right border
+ if (mBorder + bWidth < texWidth) {
+ Bitmap line = getBorderLine(true, config, texHeight);
+ canvas.texSubImage2D(this, mBorder + bWidth, 0, line, format, type);
+ }
+
+ // Bottom border
+ if (mBorder + bHeight < texHeight) {
+ Bitmap line = getBorderLine(false, config, texWidth);
+ canvas.texSubImage2D(this, 0, mBorder + bHeight, line, format, type);
+ }
+ }
+ } finally {
+ freeBitmap();
+ }
+ // Update texture state.
+ setAssociatedCanvas(canvas);
+ mState = STATE_LOADED;
+ mContentValid = true;
+ } else {
+ mState = STATE_ERROR;
+ throw new RuntimeException("Texture load fail, no bitmap");
+ }
+ }
+
+ @Override
+ protected boolean onBind(GLCanvas canvas) {
+ updateContent(canvas);
+ return isContentValid();
+ }
+
+ @Override
+ protected int getTarget() {
+ return GL11.GL_TEXTURE_2D;
+ }
+
+ public void setOpaque(boolean isOpaque) {
+ mOpaque = isOpaque;
+ }
+
+ @Override
+ public boolean isOpaque() {
+ return mOpaque;
+ }
+
+ @Override
+ public void recycle() {
+ super.recycle();
+ if (mBitmap != null) freeBitmap();
+ }
+}
diff --git a/src/com/android/gallery3d/util/IntArray.java b/src/com/android/gallery3d/util/IntArray.java
new file mode 100644
index 0000000..2c4dc2c
--- /dev/null
+++ b/src/com/android/gallery3d/util/IntArray.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.util;
+
+public class IntArray {
+ private static final int INIT_CAPACITY = 8;
+
+ private int mData[] = new int[INIT_CAPACITY];
+ private int mSize = 0;
+
+ public void add(int value) {
+ if (mData.length == mSize) {
+ int temp[] = new int[mSize + mSize];
+ System.arraycopy(mData, 0, temp, 0, mSize);
+ mData = temp;
+ }
+ mData[mSize++] = value;
+ }
+
+ public int removeLast() {
+ mSize--;
+ return mData[mSize];
+ }
+
+ public int size() {
+ return mSize;
+ }
+
+ // For testing only
+ public int[] toArray(int[] result) {
+ if (result == null || result.length < mSize) {
+ result = new int[mSize];
+ }
+ System.arraycopy(mData, 0, result, 0, mSize);
+ return result;
+ }
+
+ public int[] getInternalArray() {
+ return mData;
+ }
+
+ public void clear() {
+ mSize = 0;
+ if (mData.length != INIT_CAPACITY) mData = new int[INIT_CAPACITY];
+ }
+}
diff --git a/src/com/android/launcher3/CropView.java b/src/com/android/launcher3/CropView.java
new file mode 100644
index 0000000..5b49282
--- /dev/null
+++ b/src/com/android/launcher3/CropView.java
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.RectF;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.ScaleGestureDetector;
+import android.view.ScaleGestureDetector.OnScaleGestureListener;
+
+import com.android.photos.views.TiledImageRenderer.TileSource;
+import com.android.photos.views.TiledImageView;
+
+public class CropView extends TiledImageView implements OnScaleGestureListener {
+
+ private ScaleGestureDetector mScaleGestureDetector;
+ private float mLastX, mLastY;
+ private float mMinScale;
+
+ public CropView(Context context) {
+ this(context, null);
+ }
+
+ public CropView(Context context, AttributeSet attrs) {
+ super(context, attrs);
+ mScaleGestureDetector = new ScaleGestureDetector(context, this);
+ }
+
+ public RectF getCrop() {
+ final float width = getWidth();
+ final float height = getHeight();
+ final float imageWidth = mRenderer.source.getImageWidth();
+ final float imageHeight = mRenderer.source.getImageHeight();
+ final float scale = mRenderer.scale;
+ float centerX = (width / 2f - mRenderer.centerX + (imageWidth - width) / 2f)
+ * scale + width / 2f;
+ float centerY = (height / 2f - mRenderer.centerY + (imageHeight - height) / 2f)
+ * scale + height / 2f;
+ float leftEdge = centerX - imageWidth / 2f * scale;
+ float topEdge = centerY - imageHeight / 2f * scale;
+
+ float cropLeft = -leftEdge / scale;
+ float cropTop = -topEdge / scale;
+ float cropRight = cropLeft + width / scale;
+ float cropBottom = cropTop + height / scale;
+ RectF cropRect = new RectF(cropLeft, cropTop, cropRight, cropBottom);
+
+ return new RectF(cropLeft, cropTop, cropRight, cropBottom);
+ }
+
+ public void setTileSource(TileSource source, Runnable isReadyCallback) {
+ super.setTileSource(source, isReadyCallback);
+ updateMinScale(getWidth(), getHeight(), source);
+ }
+
+ protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+ updateMinScale(w, h, mRenderer.source);
+ }
+
+ private void updateMinScale(int w, int h, TileSource source) {
+ synchronized (mLock) {
+ if (source != null) {
+ mMinScale = Math.max(w / (float) source.getImageWidth(),
+ h / (float) source.getImageHeight());
+ mRenderer.scale = Math.max(mMinScale, mRenderer.scale);
+ }
+ }
+ }
+
+ @Override
+ public boolean onScaleBegin(ScaleGestureDetector detector) {
+ return true;
+ }
+
+ @Override
+ public boolean onScale(ScaleGestureDetector detector) {
+ // Don't need the lock because this will only fire inside of
+ // onTouchEvent
+ mRenderer.scale *= detector.getScaleFactor();
+ mRenderer.scale = Math.max(mMinScale, mRenderer.scale);
+ invalidate();
+ return true;
+ }
+
+ @Override
+ public void onScaleEnd(ScaleGestureDetector detector) {
+ }
+
+ @Override
+ public boolean onTouchEvent(MotionEvent event) {
+ int action = event.getActionMasked();
+ final boolean pointerUp = action == MotionEvent.ACTION_POINTER_UP;
+ final int skipIndex = pointerUp ? event.getActionIndex() : -1;
+
+ // Determine focal point
+ float sumX = 0, sumY = 0;
+ final int count = event.getPointerCount();
+ for (int i = 0; i < count; i++) {
+ if (skipIndex == i)
+ continue;
+ sumX += event.getX(i);
+ sumY += event.getY(i);
+ }
+ final int div = pointerUp ? count - 1 : count;
+ float x = sumX / div;
+ float y = sumY / div;
+
+ synchronized (mLock) {
+ mScaleGestureDetector.onTouchEvent(event);
+ switch (action) {
+ case MotionEvent.ACTION_MOVE:
+ mRenderer.centerX += (mLastX - x) / mRenderer.scale;
+ mRenderer.centerY += (mLastY - y) / mRenderer.scale;
+ invalidate();
+ break;
+ }
+ if (mRenderer.source != null) {
+ // Adjust position so that the wallpaper covers the entire area
+ // of the screen
+ final float width = getWidth();
+ final float height = getHeight();
+ final float imageWidth = mRenderer.source.getImageWidth();
+ final float imageHeight = mRenderer.source.getImageHeight();
+ final float scale = mRenderer.scale;
+ float centerX = (width / 2f - mRenderer.centerX + (imageWidth - width) / 2f)
+ * scale + width / 2f;
+ float centerY = (height / 2f - mRenderer.centerY + (imageHeight - height) / 2f)
+ * scale + height / 2f;
+ float leftEdge = centerX - imageWidth / 2f * scale;
+ float rightEdge = centerX + imageWidth / 2f * scale;
+ float topEdge = centerY - imageHeight / 2f * scale;
+ float bottomEdge = centerY + imageHeight / 2f * scale;
+ if (leftEdge > 0) {
+ mRenderer.centerX += Math.ceil(leftEdge / scale);
+ }
+ if (rightEdge < getWidth()) {
+ mRenderer.centerX += (rightEdge - getWidth()) / scale;
+ }
+ if (topEdge > 0) {
+ mRenderer.centerY += Math.ceil(topEdge / scale);
+ }
+ if (bottomEdge < getHeight()) {
+ mRenderer.centerY += (bottomEdge - getHeight()) / scale;
+ }
+ }
+ }
+
+ mLastX = x;
+ mLastY = y;
+ return true;
+ }
+}
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 9ffc572..a16a33e 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -2040,20 +2040,9 @@
private void startWallpaper() {
showWorkspace(true);
final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
- Intent chooser = Intent.createChooser(pickWallpaper,
- getText(R.string.chooser_wallpaper));
- // NOTE: Adds a configure option to the chooser if the wallpaper supports it
- // Removed in Eclair MR1
-// WallpaperManager wm = (WallpaperManager)
-// getSystemService(Context.WALLPAPER_SERVICE);
-// WallpaperInfo wi = wm.getWallpaperInfo();
-// if (wi != null && wi.getSettingsActivity() != null) {
-// LabeledIntent li = new LabeledIntent(getPackageName(),
-// R.string.configure_wallpaper, 0);
-// li.setClassName(wi.getPackageName(), wi.getSettingsActivity());
-// chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { li });
-// }
- startActivityForResult(chooser, REQUEST_PICK_WALLPAPER);
+ pickWallpaper.setComponent(
+ new ComponentName(getPackageName(), WallpaperPickerActivity.class.getName()));
+ startActivityForResult(pickWallpaper, REQUEST_PICK_WALLPAPER);
}
/**
@@ -4123,6 +4112,9 @@
return null;
}
}
+ protected SharedPreferences getSharedPrefs() {
+ return mSharedPrefs;
+ }
public boolean isFolderClingVisible() {
Cling cling = (Cling) findViewById(R.id.folder_cling);
if (cling != null) {
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
index 0c577e5..53d2ec5 100644
--- a/src/com/android/launcher3/LauncherAppState.java
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -19,6 +19,7 @@
import android.app.SearchManager;
import android.content.*;
import android.content.res.Configuration;
+import android.content.res.Resources;
import android.database.ContentObserver;
import android.os.Handler;
import android.provider.Settings;
@@ -76,7 +77,7 @@
}
// set sIsScreenXLarge and mScreenDensity *before* creating icon cache
- mIsScreenLarge = sContext.getResources().getBoolean(R.bool.is_large_tablet);
+ mIsScreenLarge = isScreenLarge(sContext.getResources());
mScreenDensity = sContext.getResources().getDisplayMetrics().density;
mWidgetPreviewCacheDb = new WidgetPreviewLoader.CacheDb(sContext);
@@ -188,6 +189,11 @@
return mIsScreenLarge;
}
+ // Need a version that doesn't require an instance of LauncherAppState for the wallpaper picker
+ public static boolean isScreenLarge(Resources res) {
+ return res.getBoolean(R.bool.is_large_tablet);
+ }
+
public static boolean isScreenLandscape(Context context) {
return context.getResources().getConfiguration().orientation ==
Configuration.ORIENTATION_LANDSCAPE;
diff --git a/src/com/android/launcher3/PreloadReceiver.java b/src/com/android/launcher3/PreloadReceiver.java
index 4c9032f..75e5c98 100644
--- a/src/com/android/launcher3/PreloadReceiver.java
+++ b/src/com/android/launcher3/PreloadReceiver.java
@@ -31,8 +31,7 @@
@Override
public void onReceive(Context context, Intent intent) {
- final LauncherAppState app = LauncherAppState.getInstance();
- final LauncherProvider provider = app.getLauncherProvider();
+ final LauncherProvider provider = LauncherAppState.getLauncherProvider();
if (provider != null) {
String name = intent.getStringExtra(EXTRA_WORKSPACE_NAME);
final int workspaceResId = !TextUtils.isEmpty(name)
diff --git a/src/com/android/launcher3/WallpaperCropActivity.java b/src/com/android/launcher3/WallpaperCropActivity.java
new file mode 100644
index 0000000..087785e
--- /dev/null
+++ b/src/com/android/launcher3/WallpaperCropActivity.java
@@ -0,0 +1,289 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3;
+
+import android.app.Activity;
+import android.app.WallpaperManager;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.graphics.Bitmap;
+import android.graphics.Bitmap.CompressFormat;
+import android.graphics.BitmapFactory;
+import android.graphics.BitmapRegionDecoder;
+import android.graphics.Canvas;
+import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.graphics.Point;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.util.Log;
+
+import com.android.gallery3d.common.Utils;
+
+import java.io.BufferedInputStream;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+
+// LAUNCHER crop activity!
+public class WallpaperCropActivity extends Activity {
+ private static final String LOGTAG = "Launcher3.CropActivity";
+
+ private int mOutputX = 0;
+ private int mOutputY = 0;
+
+ protected static final String WALLPAPER_WIDTH_KEY = "wallpaper.width";
+ protected static final String WALLPAPER_HEIGHT_KEY = "wallpaper.height";
+ private static final int DEFAULT_COMPRESS_QUALITY = 90;
+ /**
+ * The maximum bitmap size we allow to be returned through the intent.
+ * Intents have a maximum of 1MB in total size. However, the Bitmap seems to
+ * have some overhead to hit so that we go way below the limit here to make
+ * sure the intent stays below 1MB.We should consider just returning a byte
+ * array instead of a Bitmap instance to avoid overhead.
+ */
+ public static final int MAX_BMAP_IN_INTENT = 750000;
+
+
+ protected class BitmapCropTask extends AsyncTask<Void, Void, Boolean> {
+ Uri mInUri = null;
+ InputStream mInStream;
+ RectF mCropBounds = null;
+ int mOutWidth, mOutHeight;
+ int mRotation = 0; // for now
+ protected final WallpaperManager mWPManager;
+ String mOutputFormat = "jpg"; // for now
+ boolean mSetWallpaper;
+ boolean mSaveCroppedBitmap;
+ Bitmap mCroppedBitmap;
+
+ public BitmapCropTask(Uri inUri, RectF cropBounds, int outWidth, int outHeight,
+ boolean setWallpaper, boolean saveCroppedBitmap) {
+ mInUri = inUri;
+ mCropBounds = cropBounds;
+ mOutWidth = outWidth;
+ mOutHeight = outHeight;
+ mWPManager = WallpaperManager.getInstance(getApplicationContext());
+ mSetWallpaper = setWallpaper;
+ mSaveCroppedBitmap = saveCroppedBitmap;
+ }
+
+ // Helper to setup input stream
+ private void regenerateInputStream() {
+ if (mInUri == null) {
+ Log.w(LOGTAG, "cannot read original file, no input URI given");
+ } else {
+ Utils.closeSilently(mInStream);
+ try {
+ mInStream = new BufferedInputStream(
+ getContentResolver().openInputStream(mInUri));
+ } catch (FileNotFoundException e) {
+ Log.w(LOGTAG, "cannot read file: " + mInUri.toString(), e);
+ }
+ }
+ }
+
+ public Point getImageBounds() {
+ regenerateInputStream();
+ if (mInStream != null) {
+ BitmapFactory.Options options = new BitmapFactory.Options();
+ options.inJustDecodeBounds = true;
+ BitmapFactory.decodeStream(mInStream, null, options);
+ if (options.outWidth != 0 && options.outHeight != 0) {
+ return new Point(options.outWidth, options.outHeight);
+ }
+ }
+ return null;
+ }
+
+ public void setCropBounds(RectF cropBounds) {
+ mCropBounds = cropBounds;
+ }
+
+ public Bitmap getCroppedBitmap() {
+ return mCroppedBitmap;
+ }
+ public boolean cropBitmap() {
+ boolean failure = false;
+
+ regenerateInputStream();
+
+ if (mInStream != null) {
+ // Find crop bounds (scaled to original image size)
+ Rect roundedTrueCrop = new Rect();
+ mCropBounds.roundOut(roundedTrueCrop);
+
+ if (roundedTrueCrop.width() <= 0 || roundedTrueCrop.height() <= 0) {
+ Log.w(LOGTAG, "crop has bad values for full size image");
+ failure = true;
+ return false;
+ }
+
+ // See how much we're reducing the size of the image
+ int scaleDownSampleSize = Math.min(roundedTrueCrop.width() / mOutWidth,
+ roundedTrueCrop.height() / mOutHeight);
+
+ // Attempt to open a region decoder
+ BitmapRegionDecoder decoder = null;
+ try {
+ decoder = BitmapRegionDecoder.newInstance(mInStream, true);
+ } catch (IOException e) {
+ Log.w(LOGTAG, "cannot open region decoder for file: " + mInUri.toString(), e);
+ }
+
+ Bitmap crop = null;
+ if (decoder != null) {
+ // Do region decoding to get crop bitmap
+ BitmapFactory.Options options = new BitmapFactory.Options();
+ if (scaleDownSampleSize > 1) {
+ options.inSampleSize = scaleDownSampleSize;
+ }
+ crop = decoder.decodeRegion(roundedTrueCrop, options);
+ decoder.recycle();
+ }
+
+ if (crop == null) {
+ // BitmapRegionDecoder has failed, try to crop in-memory
+ regenerateInputStream();
+ Bitmap fullSize = null;
+ if (mInStream != null) {
+ BitmapFactory.Options options = new BitmapFactory.Options();
+ if (scaleDownSampleSize > 1) {
+ options.inSampleSize = scaleDownSampleSize;
+ }
+ fullSize = BitmapFactory.decodeStream(mInStream, null, options);
+ }
+ if (fullSize != null) {
+ crop = Bitmap.createBitmap(fullSize, roundedTrueCrop.left,
+ roundedTrueCrop.top, roundedTrueCrop.width(),
+ roundedTrueCrop.height());
+ }
+ }
+
+ if (crop == null) {
+ Log.w(LOGTAG, "cannot decode file: " + mInUri.toString());
+ failure = true;
+ return false;
+ }
+ if (mOutputX > 0 && mOutputY > 0) {
+ Matrix m = new Matrix();
+ RectF cropRect = new RectF(0, 0, crop.getWidth(), crop.getHeight());
+ if (mRotation > 0) {
+ m.setRotate(mRotation);
+ m.mapRect(cropRect);
+ }
+ RectF returnRect = new RectF(0, 0, mOutputX, mOutputY);
+ m.setRectToRect(cropRect, returnRect, Matrix.ScaleToFit.FILL);
+ m.preRotate(mRotation);
+ Bitmap tmp = Bitmap.createBitmap((int) returnRect.width(),
+ (int) returnRect.height(), Bitmap.Config.ARGB_8888);
+ if (tmp != null) {
+ Canvas c = new Canvas(tmp);
+ c.drawBitmap(crop, m, new Paint());
+ crop = tmp;
+ }
+ } else if (mRotation > 0) {
+ Matrix m = new Matrix();
+ m.setRotate(mRotation);
+ Bitmap tmp = Bitmap.createBitmap(crop, 0, 0, crop.getWidth(),
+ crop.getHeight(), m, true);
+ if (tmp != null) {
+ crop = tmp;
+ }
+ }
+
+ if (mSaveCroppedBitmap) {
+ mCroppedBitmap = crop;
+ }
+
+ // Get output compression format
+ CompressFormat cf =
+ convertExtensionToCompressFormat(getFileExtension(mOutputFormat));
+
+ // Compress to byte array
+ ByteArrayOutputStream tmpOut = new ByteArrayOutputStream(2048);
+ if (crop.compress(cf, DEFAULT_COMPRESS_QUALITY, tmpOut)) {
+ // If we need to set to the wallpaper, set it
+ if (mSetWallpaper && mWPManager != null) {
+ if (mWPManager == null) {
+ Log.w(LOGTAG, "no wallpaper manager");
+ failure = true;
+ } else {
+ try {
+ mWPManager.setStream(new ByteArrayInputStream(tmpOut
+ .toByteArray()));
+ updateWallpaperDimensions(mOutWidth, mOutHeight);
+ } catch (IOException e) {
+ Log.w(LOGTAG, "cannot write stream to wallpaper", e);
+ failure = true;
+ }
+ }
+ }
+ } else {
+ Log.w(LOGTAG, "cannot compress bitmap");
+ failure = true;
+ }
+ }
+ return !failure; // True if any of the operations failed
+ }
+
+ @Override
+ protected Boolean doInBackground(Void... params) {
+ return cropBitmap();
+ }
+
+ @Override
+ protected void onPostExecute(Boolean result) {
+ setResult(Activity.RESULT_OK);
+ finish();
+ }
+ }
+
+ protected void updateWallpaperDimensions(int width, int height) {
+ String spKey = LauncherAppState.getSharedPreferencesKey();
+ SharedPreferences sp = getSharedPreferences(spKey, Context.MODE_PRIVATE);
+ SharedPreferences.Editor editor = sp.edit();
+ if (width != 0 && height != 0) {
+ editor.putInt(WALLPAPER_WIDTH_KEY, width);
+ editor.putInt(WALLPAPER_HEIGHT_KEY, height);
+ } else {
+ editor.remove(WALLPAPER_WIDTH_KEY);
+ editor.remove(WALLPAPER_HEIGHT_KEY);
+ }
+ editor.commit();
+ WallpaperPickerActivity.suggestWallpaperDimension(getResources(),
+ sp, getWindowManager(), WallpaperManager.getInstance(this));
+ }
+
+ protected static CompressFormat convertExtensionToCompressFormat(String extension) {
+ return extension.equals("png") ? CompressFormat.PNG : CompressFormat.JPEG;
+ }
+
+ protected static String getFileExtension(String requestFormat) {
+ String outputFormat = (requestFormat == null)
+ ? "jpg"
+ : requestFormat;
+ outputFormat = outputFormat.toLowerCase();
+ return (outputFormat.equals("png") || outputFormat.equals("gif"))
+ ? "png" // We don't support gif compression.
+ : "jpg";
+ }
+}
diff --git a/src/com/android/launcher3/WallpaperPickerActivity.java b/src/com/android/launcher3/WallpaperPickerActivity.java
new file mode 100644
index 0000000..0327421
--- /dev/null
+++ b/src/com/android/launcher3/WallpaperPickerActivity.java
@@ -0,0 +1,441 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3;
+
+import android.app.ActionBar;
+import android.app.Activity;
+import android.app.WallpaperManager;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.res.Resources;
+import android.graphics.Point;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.LevelListDrawable;
+import android.net.Uri;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.SubMenu;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.view.WindowManager;
+import android.widget.BaseAdapter;
+import android.widget.FrameLayout;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.ListAdapter;
+import android.widget.SpinnerAdapter;
+import android.widget.TextView;
+
+import com.android.photos.BitmapRegionTileSource;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class WallpaperPickerActivity extends WallpaperCropActivity {
+ private static final String TAG = "Launcher.WallpaperPickerActivity";
+
+ private static final int IMAGE_PICK = 5;
+ private static final float WALLPAPER_SCREENS_SPAN = 2f;
+
+ private ArrayList<Integer> mThumbs;
+ private ArrayList<Integer> mImages;
+
+ private View mSelectedThumb;
+ private CropView mCropView;
+
+ private static class ThumbnailMetaData {
+ public boolean mLaunchesGallery;
+ public Uri mGalleryImageUri;
+ public int mWallpaperResId;
+ }
+
+ private OnClickListener mThumbnailOnClickListener = new OnClickListener() {
+ public void onClick(View v) {
+ if (mSelectedThumb != null) {
+ mSelectedThumb.setSelected(false);
+ }
+
+ ThumbnailMetaData meta = (ThumbnailMetaData) v.getTag();
+
+ if (!meta.mLaunchesGallery) {
+ mSelectedThumb = v;
+ v.setSelected(true);
+ }
+
+ if (meta.mLaunchesGallery) {
+ Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
+ intent.setType("image/*");
+ startActivityForResult(intent, IMAGE_PICK);
+ } else if (meta.mGalleryImageUri != null) {
+ mCropView.setTileSource(new BitmapRegionTileSource(WallpaperPickerActivity.this,
+ meta.mGalleryImageUri, 1024, 0), null);
+ } else {
+ mCropView.setTileSource(new BitmapRegionTileSource(WallpaperPickerActivity.this,
+ meta.mWallpaperResId, 1024, 0), null);
+ }
+ }
+ };
+
+ protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+ if (requestCode == IMAGE_PICK && resultCode == RESULT_OK) {
+ Uri uri = data.getData();
+
+ // Add a tile for the image picked from Gallery
+ LinearLayout wallpapers = (LinearLayout) findViewById(R.id.wallpaper_list);
+ FrameLayout pickedImageThumbnail = (FrameLayout) getLayoutInflater().
+ inflate(R.layout.wallpaper_picker_item, wallpapers, false);
+ setWallpaperItemPaddingToZero(pickedImageThumbnail);
+
+ // Load the thumbnail
+ ImageView image = (ImageView) pickedImageThumbnail.findViewById(R.id.wallpaper_image);
+
+ Resources res = getResources();
+ int width = res.getDimensionPixelSize(R.dimen.wallpaperThumbnailWidth);
+ int height = res.getDimensionPixelSize(R.dimen.wallpaperThumbnailHeight);
+
+ BitmapCropTask cropTask = new BitmapCropTask(uri, null, width, height, false, true);
+ Point bounds = cropTask.getImageBounds();
+
+ RectF cropRect = new RectF();
+ // Get a crop rect that will fit this
+ if (bounds.x / (float) bounds.y > width / (float) height) {
+ cropRect.top = 0;
+ cropRect.bottom = bounds.y;
+ cropRect.left = (bounds.x - (width / (float) height) * bounds.y) / 2;
+ cropRect.right = bounds.x - cropRect.left;
+ } else {
+ cropRect.left = 0;
+ cropRect.right = bounds.x;
+ cropRect.top = (bounds.y - (height / (float) width) * bounds.x) / 2;
+ cropRect.bottom = bounds.y - cropRect.top;
+ }
+ cropTask.setCropBounds(cropRect);
+
+ if (cropTask.cropBitmap()) {
+ image.setImageBitmap(cropTask.getCroppedBitmap());
+ Drawable thumbDrawable = image.getDrawable();
+ thumbDrawable.setDither(true);
+ } else {
+ Log.e(TAG, "Error loading thumbnail for uri=" + uri);
+ }
+ wallpapers.addView(pickedImageThumbnail, 0);
+
+ ThumbnailMetaData meta = new ThumbnailMetaData();
+ meta.mGalleryImageUri = uri;
+ pickedImageThumbnail.setTag(meta);
+ mThumbnailOnClickListener.onClick(pickedImageThumbnail);
+ }
+ }
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.wallpaper_picker);
+
+ mCropView = (CropView) findViewById(R.id.cropView);
+
+ // Populate the built-in wallpapers
+ findWallpapers();
+
+ LinearLayout wallpapers = (LinearLayout) findViewById(R.id.wallpaper_list);
+ ImageAdapter ia = new ImageAdapter(this);
+ for (int i = 0; i < ia.getCount(); i++) {
+ FrameLayout thumbnail = (FrameLayout) ia.getView(i, null, wallpapers);
+ wallpapers.addView(thumbnail, i);
+
+ ThumbnailMetaData meta = new ThumbnailMetaData();
+ meta.mWallpaperResId = mImages.get(i);
+ thumbnail.setTag(meta);
+ thumbnail.setOnClickListener(mThumbnailOnClickListener);
+ if (i == 0) {
+ mThumbnailOnClickListener.onClick(thumbnail);
+ }
+ }
+ // Add a tile for the Gallery
+ FrameLayout galleryThumbnail = (FrameLayout) getLayoutInflater().
+ inflate(R.layout.wallpaper_picker_gallery_item, wallpapers, false);
+ setWallpaperItemPaddingToZero(galleryThumbnail);
+
+ TextView galleryLabel =
+ (TextView) galleryThumbnail.findViewById(R.id.wallpaper_item_label);
+ galleryLabel.setText(R.string.gallery);
+ wallpapers.addView(galleryThumbnail, 0);
+
+ ThumbnailMetaData meta = new ThumbnailMetaData();
+ meta.mLaunchesGallery = true;
+ galleryThumbnail.setTag(meta);
+ galleryThumbnail.setOnClickListener(mThumbnailOnClickListener);
+
+ // Action bar
+ // Show the custom action bar view
+ final ActionBar actionBar = getActionBar();
+ actionBar.setCustomView(R.layout.actionbar_set_wallpaper);
+ actionBar.getCustomView().setOnClickListener(
+ new View.OnClickListener() {
+ @Override
+ public void onClick(View v) {
+
+ ThumbnailMetaData meta = (ThumbnailMetaData) mSelectedThumb.getTag();
+ if (meta.mLaunchesGallery) {
+ // shouldn't be selected, but do nothing
+ } else if (meta.mGalleryImageUri != null) {
+ // Get the crop
+ // TODO: get outwidth/outheight more robustly?
+ BitmapCropTask cropTask = new BitmapCropTask(meta.mGalleryImageUri,
+ mCropView.getCrop(), mCropView.getWidth(), mCropView.getHeight(),
+ true, false);
+
+ cropTask.execute();
+ } else if (meta.mWallpaperResId != 0) {
+ try {
+ WallpaperManager wm =
+ WallpaperManager.getInstance(getApplicationContext());
+ wm.setResource(meta.mWallpaperResId);
+ // passing 0 will just revert back to using the default wallpaper
+ // size (setWallpaperDimension)
+ updateWallpaperDimensions(0, 0);
+ String spKey = LauncherAppState.getSharedPreferencesKey();
+ SharedPreferences sp =
+ getSharedPreferences(spKey, Context.MODE_PRIVATE);
+ SharedPreferences.Editor editor = sp.edit();
+ editor.remove(WALLPAPER_WIDTH_KEY);
+ editor.remove(WALLPAPER_HEIGHT_KEY);
+ editor.commit();
+ setResult(Activity.RESULT_OK);
+ finish();
+ } catch (IOException e) {
+ Log.e(TAG, "Failed to set wallpaper: " + e);
+ }
+ }
+ }
+ });
+ }
+
+ private static void setWallpaperItemPaddingToZero(FrameLayout frameLayout) {
+ frameLayout.setPadding(0, 0, 0, 0);
+ frameLayout.setForeground(new ZeroPaddingDrawable(frameLayout.getForeground()));
+ }
+
+ @Override
+ public boolean onCreateOptionsMenu(Menu menu) {
+ final Intent pickWallpaperIntent = new Intent(Intent.ACTION_SET_WALLPAPER);
+ final PackageManager pm = getPackageManager();
+ final List<ResolveInfo> apps =
+ pm.queryIntentActivities(pickWallpaperIntent, 0);
+
+ SubMenu sub = menu.addSubMenu("Other\u2026"); // TODO: what's the better way to do this?
+ sub.getItem().setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
+
+
+ // Get list of image picker intents
+ Intent pickImageIntent = new Intent(Intent.ACTION_GET_CONTENT);
+ pickImageIntent.setType("image/*");
+ final List<ResolveInfo> imagePickerActivities =
+ pm.queryIntentActivities(pickImageIntent, 0);
+ final ComponentName[] imageActivities = new ComponentName[imagePickerActivities.size()];
+ for (int i = 0; i < imagePickerActivities.size(); i++) {
+ ActivityInfo activityInfo = imagePickerActivities.get(i).activityInfo;
+ imageActivities[i] = new ComponentName(activityInfo.packageName, activityInfo.name);
+ }
+
+ outerLoop:
+ for (ResolveInfo info : apps) {
+ final ComponentName componentName =
+ new ComponentName(info.activityInfo.packageName, info.activityInfo.name);
+ // Exclude anything from our own package, and the old Launcher
+ if (componentName.getPackageName().equals(getPackageName()) ||
+ componentName.getPackageName().equals("com.android.launcher")) {
+ continue;
+ }
+ // Exclude any package that already responds to the image picker intent
+ for (ResolveInfo imagePickerActivityInfo : imagePickerActivities) {
+ if (componentName.getPackageName().equals(
+ imagePickerActivityInfo.activityInfo.packageName)) {
+ continue outerLoop;
+ }
+ }
+ MenuItem mi = sub.add(info.loadLabel(pm));
+ Drawable icon = info.loadIcon(pm);
+ if (icon != null) {
+ mi.setIcon(icon);
+ }
+ }
+ return super.onCreateOptionsMenu(menu);
+ }
+
+ private void findWallpapers() {
+ mThumbs = new ArrayList<Integer>(24);
+ mImages = new ArrayList<Integer>(24);
+
+ final Resources resources = getResources();
+ // Context.getPackageName() may return the "original" package name,
+ // com.android.launcher3; Resources needs the real package name,
+ // com.android.launcher3. So we ask Resources for what it thinks the
+ // package name should be.
+ final String packageName = resources.getResourcePackageName(R.array.wallpapers);
+
+ addWallpapers(resources, packageName, R.array.wallpapers);
+ addWallpapers(resources, packageName, R.array.extra_wallpapers);
+ }
+
+ private void addWallpapers(Resources resources, String packageName, int list) {
+ final String[] extras = resources.getStringArray(list);
+ for (String extra : extras) {
+ int res = resources.getIdentifier(extra, "drawable", packageName);
+ if (res != 0) {
+ final int thumbRes = resources.getIdentifier(extra + "_small",
+ "drawable", packageName);
+
+ if (thumbRes != 0) {
+ mThumbs.add(thumbRes);
+ mImages.add(res);
+ // Log.d(TAG, "add: [" + packageName + "]: " + extra + " (" + res + ")");
+ }
+ }
+ }
+ }
+
+ // As a ratio of screen height, the total distance we want the parallax effect to span
+ // horizontally
+ private static float wallpaperTravelToScreenWidthRatio(int width, int height) {
+ float aspectRatio = width / (float) height;
+
+ // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width
+ // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width
+ // We will use these two data points to extrapolate how much the wallpaper parallax effect
+ // to span (ie travel) at any aspect ratio:
+
+ final float ASPECT_RATIO_LANDSCAPE = 16/10f;
+ final float ASPECT_RATIO_PORTRAIT = 10/16f;
+ final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f;
+ final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f;
+
+ // To find out the desired width at different aspect ratios, we use the following two
+ // formulas, where the coefficient on x is the aspect ratio (width/height):
+ // (16/10)x + y = 1.5
+ // (10/16)x + y = 1.2
+ // We solve for x and y and end up with a final formula:
+ final float x =
+ (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) /
+ (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT);
+ final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT;
+ return x * aspectRatio + y;
+ }
+
+ static public void suggestWallpaperDimension(Resources res,
+ final SharedPreferences sharedPrefs,
+ WindowManager windowManager,
+ final WallpaperManager wallpaperManager) {
+ Point minDims = new Point();
+ Point maxDims = new Point();
+ windowManager.getDefaultDisplay().getCurrentSizeRange(minDims, maxDims);
+
+ final int maxDim = Math.max(maxDims.x, maxDims.y);
+ final int minDim = Math.min(minDims.x, minDims.y);
+
+ // We need to ensure that there is enough extra space in the wallpaper
+ // for the intended
+ // parallax effects
+ final int defaultWidth, defaultHeight;
+ if (LauncherAppState.isScreenLarge(res)) {
+ defaultWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim));
+ defaultHeight = maxDim;
+ } else {
+ defaultWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim);
+ defaultHeight = maxDim;
+ }
+ new Thread("suggestWallpaperDimension") {
+ public void run() {
+ // If we have saved a wallpaper width/height, use that instead
+ int savedWidth = sharedPrefs.getInt(WALLPAPER_WIDTH_KEY, defaultWidth);
+ int savedHeight = sharedPrefs.getInt(WALLPAPER_HEIGHT_KEY, defaultHeight);
+ }
+ }.start();
+ }
+
+ static class ZeroPaddingDrawable extends LevelListDrawable {
+ public ZeroPaddingDrawable(Drawable d) {
+ super();
+ addLevel(0, 0, d);
+ setLevel(0);
+ }
+
+ @Override
+ public boolean getPadding(Rect padding) {
+ padding.set(0, 0, 0, 0);
+ return true;
+ }
+ }
+
+ private class ImageAdapter extends BaseAdapter implements ListAdapter, SpinnerAdapter {
+ private LayoutInflater mLayoutInflater;
+
+ ImageAdapter(Activity activity) {
+ mLayoutInflater = activity.getLayoutInflater();
+ }
+
+ public int getCount() {
+ return mThumbs.size();
+ }
+
+ public Object getItem(int position) {
+ return position;
+ }
+
+ public long getItemId(int position) {
+ return position;
+ }
+
+ public View getView(int position, View convertView, ViewGroup parent) {
+ View view;
+
+ if (convertView == null) {
+ view = mLayoutInflater.inflate(R.layout.wallpaper_picker_item, parent, false);
+ } else {
+ view = convertView;
+ }
+
+ setWallpaperItemPaddingToZero((FrameLayout) view);
+
+ ImageView image = (ImageView) view.findViewById(R.id.wallpaper_image);
+
+ int thumbRes = mThumbs.get(position);
+ image.setImageResource(thumbRes);
+ Drawable thumbDrawable = image.getDrawable();
+ if (thumbDrawable != null) {
+ thumbDrawable.setDither(true);
+ } else {
+ Log.e(TAG, "Error decoding thumbnail resId=" + thumbRes + " for wallpaper #"
+ + position);
+ }
+
+ return view;
+ }
+ }
+}
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index b2f7433..2298c53 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -104,7 +104,6 @@
private LayoutTransition mLayoutTransition;
private final WallpaperManager mWallpaperManager;
private IBinder mWindowToken;
- private static final float WALLPAPER_SCREENS_SPAN = 2f;
private int mDefaultPage;
@@ -189,16 +188,11 @@
public static final int DRAG_BITMAP_PADDING = 2;
private boolean mWorkspaceFadeInAdjacentScreens;
- enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM };
- int mWallpaperWidth;
- int mWallpaperHeight;
WallpaperOffsetInterpolator mWallpaperOffset;
boolean mUpdateWallpaperOffsetImmediately = false;
private Runnable mDelayedResizeRunnable;
private Runnable mDelayedSnapToPageRunnable;
private Point mDisplaySize = new Point();
- private boolean mIsStaticWallpaper;
- private int mWallpaperTravelWidth;
private int mCameraDistance;
// Variables relating to the creation of user folders by hovering shortcuts over shortcuts
@@ -397,8 +391,6 @@
mWallpaperOffset = new WallpaperOffsetInterpolator();
Display display = mLauncher.getWindowManager().getDefaultDisplay();
display.getSize(mDisplaySize);
- mWallpaperTravelWidth = (int) (mDisplaySize.x *
- wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y));
mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx);
mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity);
@@ -529,7 +521,7 @@
mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID);
mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID);
- long newId = LauncherAppState.getInstance().getLauncherProvider().generateNewScreenId();
+ long newId = LauncherAppState.getLauncherProvider().generateNewScreenId();
mWorkspaceScreens.put(newId, cl);
mScreenOrder.add(newId);
@@ -874,7 +866,6 @@
// Only show page outlines as we pan if we are on large screen
if (LauncherAppState.getInstance().isScreenLarge()) {
showOutlines();
- mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null;
}
// If we are not fading in adjacent screens, we still need to restore the alpha in case the
@@ -944,55 +935,9 @@
Launcher.setScreen(mCurrentPage);
};
- // As a ratio of screen height, the total distance we want the parallax effect to span
- // horizontally
- private float wallpaperTravelToScreenWidthRatio(int width, int height) {
- float aspectRatio = width / (float) height;
-
- // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width
- // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width
- // We will use these two data points to extrapolate how much the wallpaper parallax effect
- // to span (ie travel) at any aspect ratio:
-
- final float ASPECT_RATIO_LANDSCAPE = 16/10f;
- final float ASPECT_RATIO_PORTRAIT = 10/16f;
- final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f;
- final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f;
-
- // To find out the desired width at different aspect ratios, we use the following two
- // formulas, where the coefficient on x is the aspect ratio (width/height):
- // (16/10)x + y = 1.5
- // (10/16)x + y = 1.2
- // We solve for x and y and end up with a final formula:
- final float x =
- (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) /
- (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT);
- final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT;
- return x * aspectRatio + y;
- }
-
protected void setWallpaperDimension() {
- Point minDims = new Point();
- Point maxDims = new Point();
- mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims);
-
- final int maxDim = Math.max(maxDims.x, maxDims.y);
- final int minDim = Math.min(minDims.x, minDims.y);
-
- // We need to ensure that there is enough extra space in the wallpaper for the intended
- // parallax effects
- if (LauncherAppState.getInstance().isScreenLarge()) {
- mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim));
- mWallpaperHeight = maxDim;
- } else {
- mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim);
- mWallpaperHeight = maxDim;
- }
- new Thread("setWallpaperDimension") {
- public void run() {
- mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight);
- }
- }.start();
+ WallpaperPickerActivity.suggestWallpaperDimension(mLauncher.getResources(),
+ mLauncher.getSharedPrefs(), mLauncher.getWindowManager(), mWallpaperManager);
}
private void syncWallpaperOffsetWithScroll() {
diff --git a/src/com/android/photos/BitmapRegionTileSource.java b/src/com/android/photos/BitmapRegionTileSource.java
new file mode 100644
index 0000000..9647485
--- /dev/null
+++ b/src/com/android/photos/BitmapRegionTileSource.java
@@ -0,0 +1,257 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.photos;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Bitmap.Config;
+import android.graphics.BitmapFactory;
+import android.graphics.BitmapRegionDecoder;
+import android.graphics.Canvas;
+import android.graphics.Rect;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Build.VERSION_CODES;
+import android.util.Log;
+
+import com.android.gallery3d.common.BitmapUtils;
+import com.android.gallery3d.glrenderer.BasicTexture;
+import com.android.gallery3d.glrenderer.BitmapTexture;
+import com.android.photos.views.TiledImageRenderer;
+
+import java.io.BufferedInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * A {@link com.android.photos.views.TiledImageRenderer.TileSource} using
+ * {@link BitmapRegionDecoder} to wrap a local file
+ */
+@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1)
+public class BitmapRegionTileSource implements TiledImageRenderer.TileSource {
+
+ private static final String TAG = "BitmapRegionTileSource";
+
+ private static final boolean REUSE_BITMAP =
+ Build.VERSION.SDK_INT >= VERSION_CODES.JELLY_BEAN;
+ private static final int GL_SIZE_LIMIT = 2048;
+ // This must be no larger than half the size of the GL_SIZE_LIMIT
+ // due to decodePreview being allowed to be up to 2x the size of the target
+ private static final int MAX_PREVIEW_SIZE = 1024;
+
+ BitmapRegionDecoder mDecoder;
+ int mWidth;
+ int mHeight;
+ int mTileSize;
+ private BasicTexture mPreview;
+ private final int mRotation;
+
+ // For use only by getTile
+ private Rect mWantRegion = new Rect();
+ private Rect mOverlapRegion = new Rect();
+ private BitmapFactory.Options mOptions;
+ private Canvas mCanvas;
+
+ public BitmapRegionTileSource(Context context, String path, int previewSize, int rotation) {
+ this(context, path, null, 0, previewSize, rotation);
+ }
+
+ public BitmapRegionTileSource(Context context, Uri uri, int previewSize, int rotation) {
+ this(context, null, uri, 0, previewSize, rotation);
+ }
+
+ public BitmapRegionTileSource(Context context, int resId, int previewSize, int rotation) {
+ this(context, null, null, resId, previewSize, rotation);
+ }
+
+ private BitmapRegionTileSource(
+ Context context, String path, Uri uri, int resId, int previewSize, int rotation) {
+ mTileSize = TiledImageRenderer.suggestedTileSize(context);
+ mRotation = rotation;
+ try {
+ if (path != null) {
+ mDecoder = BitmapRegionDecoder.newInstance(path, true);
+ } else if (uri != null) {
+ InputStream is = context.getContentResolver().openInputStream(uri);
+ BufferedInputStream bis = new BufferedInputStream(is);
+ mDecoder = BitmapRegionDecoder.newInstance(bis, true);
+ } else {
+ InputStream is = context.getResources().openRawResource(resId);
+ BufferedInputStream bis = new BufferedInputStream(is);
+ mDecoder = BitmapRegionDecoder.newInstance(bis, true);
+ }
+ mWidth = mDecoder.getWidth();
+ mHeight = mDecoder.getHeight();
+ } catch (IOException e) {
+ Log.w("BitmapRegionTileSource", "ctor failed", e);
+ }
+ mOptions = new BitmapFactory.Options();
+ mOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;
+ mOptions.inPreferQualityOverSpeed = true;
+ mOptions.inTempStorage = new byte[16 * 1024];
+ if (previewSize != 0) {
+ previewSize = Math.min(previewSize, MAX_PREVIEW_SIZE);
+ // Although this is the same size as the Bitmap that is likely already
+ // loaded, the lifecycle is different and interactions are on a different
+ // thread. Thus to simplify, this source will decode its own bitmap.
+ Bitmap preview = decodePreview(context, path, uri, resId, previewSize);
+ if (preview.getWidth() <= GL_SIZE_LIMIT && preview.getHeight() <= GL_SIZE_LIMIT) {
+ mPreview = new BitmapTexture(preview);
+ } else {
+ Log.w(TAG, String.format(
+ "Failed to create preview of apropriate size! "
+ + " in: %dx%d, out: %dx%d",
+ mWidth, mHeight,
+ preview.getWidth(), preview.getHeight()));
+ }
+ }
+ }
+
+ @Override
+ public int getTileSize() {
+ return mTileSize;
+ }
+
+ @Override
+ public int getImageWidth() {
+ return mWidth;
+ }
+
+ @Override
+ public int getImageHeight() {
+ return mHeight;
+ }
+
+ @Override
+ public BasicTexture getPreview() {
+ return mPreview;
+ }
+
+ @Override
+ public int getRotation() {
+ return mRotation;
+ }
+
+ @Override
+ public Bitmap getTile(int level, int x, int y, Bitmap bitmap) {
+ int tileSize = getTileSize();
+ if (!REUSE_BITMAP) {
+ return getTileWithoutReusingBitmap(level, x, y, tileSize);
+ }
+
+ int t = tileSize << level;
+ mWantRegion.set(x, y, x + t, y + t);
+
+ if (bitmap == null) {
+ bitmap = Bitmap.createBitmap(tileSize, tileSize, Bitmap.Config.ARGB_8888);
+ }
+
+ mOptions.inSampleSize = (1 << level);
+ mOptions.inBitmap = bitmap;
+
+ try {
+ bitmap = mDecoder.decodeRegion(mWantRegion, mOptions);
+ } finally {
+ if (mOptions.inBitmap != bitmap && mOptions.inBitmap != null) {
+ mOptions.inBitmap = null;
+ }
+ }
+
+ if (bitmap == null) {
+ Log.w("BitmapRegionTileSource", "fail in decoding region");
+ }
+ return bitmap;
+ }
+
+ private Bitmap getTileWithoutReusingBitmap(
+ int level, int x, int y, int tileSize) {
+
+ int t = tileSize << level;
+ mWantRegion.set(x, y, x + t, y + t);
+
+ mOverlapRegion.set(0, 0, mWidth, mHeight);
+
+ mOptions.inSampleSize = (1 << level);
+ Bitmap bitmap = mDecoder.decodeRegion(mOverlapRegion, mOptions);
+
+ if (bitmap == null) {
+ Log.w(TAG, "fail in decoding region");
+ }
+
+ if (mWantRegion.equals(mOverlapRegion)) {
+ return bitmap;
+ }
+
+ Bitmap result = Bitmap.createBitmap(tileSize, tileSize, Config.ARGB_8888);
+ if (mCanvas == null) {
+ mCanvas = new Canvas();
+ }
+ mCanvas.setBitmap(result);
+ mCanvas.drawBitmap(bitmap,
+ (mOverlapRegion.left - mWantRegion.left) >> level,
+ (mOverlapRegion.top - mWantRegion.top) >> level, null);
+ mCanvas.setBitmap(null);
+ return result;
+ }
+
+ /**
+ * Note that the returned bitmap may have a long edge that's longer
+ * than the targetSize, but it will always be less than 2x the targetSize
+ */
+ private Bitmap decodePreview(Context context, String file, Uri uri, int resId, int targetSize) {
+ float scale = (float) targetSize / Math.max(mWidth, mHeight);
+ mOptions.inSampleSize = BitmapUtils.computeSampleSizeLarger(scale);
+ mOptions.inJustDecodeBounds = false;
+
+ Bitmap result = null;
+ if (file != null) {
+ result = BitmapFactory.decodeFile(file, mOptions);
+ } else if (uri != null) {
+ try {
+ InputStream is = context.getContentResolver().openInputStream(uri);
+ BufferedInputStream bis = new BufferedInputStream(is);
+ result = BitmapFactory.decodeStream(bis, null, mOptions);
+ } catch (IOException e) {
+ Log.w("BitmapRegionTileSource", "getting preview failed", e);
+ }
+ } else {
+ result = BitmapFactory.decodeResource(context.getResources(), resId, mOptions);
+ }
+ if (result == null) {
+ return null;
+ }
+
+ // We need to resize down if the decoder does not support inSampleSize
+ // or didn't support the specified inSampleSize (some decoders only do powers of 2)
+ scale = (float) targetSize / (float) (Math.max(result.getWidth(), result.getHeight()));
+
+ if (scale <= 0.5) {
+ result = BitmapUtils.resizeBitmapByScale(result, scale, true);
+ }
+ return ensureGLCompatibleBitmap(result);
+ }
+
+ private static Bitmap ensureGLCompatibleBitmap(Bitmap bitmap) {
+ if (bitmap == null || bitmap.getConfig() != null) {
+ return bitmap;
+ }
+ Bitmap newBitmap = bitmap.copy(Config.ARGB_8888, false);
+ bitmap.recycle();
+ return newBitmap;
+ }
+}
diff --git a/src/com/android/photos/views/BlockingGLTextureView.java b/src/com/android/photos/views/BlockingGLTextureView.java
new file mode 100644
index 0000000..8a05051
--- /dev/null
+++ b/src/com/android/photos/views/BlockingGLTextureView.java
@@ -0,0 +1,438 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.photos.views;
+
+import android.content.Context;
+import android.graphics.SurfaceTexture;
+import android.opengl.GLSurfaceView.Renderer;
+import android.opengl.GLUtils;
+import android.util.Log;
+import android.view.TextureView;
+import android.view.TextureView.SurfaceTextureListener;
+
+import javax.microedition.khronos.egl.EGL10;
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.egl.EGLContext;
+import javax.microedition.khronos.egl.EGLDisplay;
+import javax.microedition.khronos.egl.EGLSurface;
+import javax.microedition.khronos.opengles.GL10;
+
+/**
+ * A TextureView that supports blocking rendering for synchronous drawing
+ */
+public class BlockingGLTextureView extends TextureView
+ implements SurfaceTextureListener {
+
+ private RenderThread mRenderThread;
+
+ public BlockingGLTextureView(Context context) {
+ super(context);
+ setSurfaceTextureListener(this);
+ }
+
+ public void setRenderer(Renderer renderer) {
+ if (mRenderThread != null) {
+ throw new IllegalArgumentException("Renderer already set");
+ }
+ mRenderThread = new RenderThread(renderer);
+ }
+
+ public void render() {
+ mRenderThread.render();
+ }
+
+ public void destroy() {
+ if (mRenderThread != null) {
+ mRenderThread.finish();
+ mRenderThread = null;
+ }
+ }
+
+ @Override
+ public void onSurfaceTextureAvailable(SurfaceTexture surface, int width,
+ int height) {
+ mRenderThread.setSurface(surface);
+ mRenderThread.setSize(width, height);
+ }
+
+ @Override
+ public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width,
+ int height) {
+ mRenderThread.setSize(width, height);
+ }
+
+ @Override
+ public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
+ if (mRenderThread != null) {
+ mRenderThread.setSurface(null);
+ }
+ return false;
+ }
+
+ @Override
+ public void onSurfaceTextureUpdated(SurfaceTexture surface) {
+ }
+
+ @Override
+ protected void finalize() throws Throwable {
+ try {
+ destroy();
+ } catch (Throwable t) {
+ // Ignore
+ }
+ super.finalize();
+ }
+
+ /**
+ * An EGL helper class.
+ */
+
+ private static class EglHelper {
+ private static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
+ private static final int EGL_OPENGL_ES2_BIT = 4;
+
+ EGL10 mEgl;
+ EGLDisplay mEglDisplay;
+ EGLSurface mEglSurface;
+ EGLConfig mEglConfig;
+ EGLContext mEglContext;
+
+ private EGLConfig chooseEglConfig() {
+ int[] configsCount = new int[1];
+ EGLConfig[] configs = new EGLConfig[1];
+ int[] configSpec = getConfig();
+ if (!mEgl.eglChooseConfig(mEglDisplay, configSpec, configs, 1, configsCount)) {
+ throw new IllegalArgumentException("eglChooseConfig failed " +
+ GLUtils.getEGLErrorString(mEgl.eglGetError()));
+ } else if (configsCount[0] > 0) {
+ return configs[0];
+ }
+ return null;
+ }
+
+ private static int[] getConfig() {
+ return new int[] {
+ EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+ EGL10.EGL_RED_SIZE, 8,
+ EGL10.EGL_GREEN_SIZE, 8,
+ EGL10.EGL_BLUE_SIZE, 8,
+ EGL10.EGL_ALPHA_SIZE, 8,
+ EGL10.EGL_DEPTH_SIZE, 0,
+ EGL10.EGL_STENCIL_SIZE, 0,
+ EGL10.EGL_NONE
+ };
+ }
+
+ EGLContext createContext(EGL10 egl, EGLDisplay eglDisplay, EGLConfig eglConfig) {
+ int[] attribList = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE };
+ return egl.eglCreateContext(eglDisplay, eglConfig, EGL10.EGL_NO_CONTEXT, attribList);
+ }
+
+ /**
+ * Initialize EGL for a given configuration spec.
+ */
+ public void start() {
+ /*
+ * Get an EGL instance
+ */
+ mEgl = (EGL10) EGLContext.getEGL();
+
+ /*
+ * Get to the default display.
+ */
+ mEglDisplay = mEgl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
+
+ if (mEglDisplay == EGL10.EGL_NO_DISPLAY) {
+ throw new RuntimeException("eglGetDisplay failed");
+ }
+
+ /*
+ * We can now initialize EGL for that display
+ */
+ int[] version = new int[2];
+ if (!mEgl.eglInitialize(mEglDisplay, version)) {
+ throw new RuntimeException("eglInitialize failed");
+ }
+ mEglConfig = chooseEglConfig();
+
+ /*
+ * Create an EGL context. We want to do this as rarely as we can, because an
+ * EGL context is a somewhat heavy object.
+ */
+ mEglContext = createContext(mEgl, mEglDisplay, mEglConfig);
+
+ if (mEglContext == null || mEglContext == EGL10.EGL_NO_CONTEXT) {
+ mEglContext = null;
+ throwEglException("createContext");
+ }
+
+ mEglSurface = null;
+ }
+
+ /**
+ * Create an egl surface for the current SurfaceTexture surface. If a surface
+ * already exists, destroy it before creating the new surface.
+ *
+ * @return true if the surface was created successfully.
+ */
+ public boolean createSurface(SurfaceTexture surface) {
+ /*
+ * Check preconditions.
+ */
+ if (mEgl == null) {
+ throw new RuntimeException("egl not initialized");
+ }
+ if (mEglDisplay == null) {
+ throw new RuntimeException("eglDisplay not initialized");
+ }
+ if (mEglConfig == null) {
+ throw new RuntimeException("mEglConfig not initialized");
+ }
+
+ /*
+ * The window size has changed, so we need to create a new
+ * surface.
+ */
+ destroySurfaceImp();
+
+ /*
+ * Create an EGL surface we can render into.
+ */
+ if (surface != null) {
+ mEglSurface = mEgl.eglCreateWindowSurface(mEglDisplay, mEglConfig, surface, null);
+ } else {
+ mEglSurface = null;
+ }
+
+ if (mEglSurface == null || mEglSurface == EGL10.EGL_NO_SURFACE) {
+ int error = mEgl.eglGetError();
+ if (error == EGL10.EGL_BAD_NATIVE_WINDOW) {
+ Log.e("EglHelper", "createWindowSurface returned EGL_BAD_NATIVE_WINDOW.");
+ }
+ return false;
+ }
+
+ /*
+ * Before we can issue GL commands, we need to make sure
+ * the context is current and bound to a surface.
+ */
+ if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
+ /*
+ * Could not make the context current, probably because the underlying
+ * SurfaceView surface has been destroyed.
+ */
+ logEglErrorAsWarning("EGLHelper", "eglMakeCurrent", mEgl.eglGetError());
+ return false;
+ }
+
+ return true;
+ }
+
+ /**
+ * Create a GL object for the current EGL context.
+ */
+ public GL10 createGL() {
+ return (GL10) mEglContext.getGL();
+ }
+
+ /**
+ * Display the current render surface.
+ * @return the EGL error code from eglSwapBuffers.
+ */
+ public int swap() {
+ if (!mEgl.eglSwapBuffers(mEglDisplay, mEglSurface)) {
+ return mEgl.eglGetError();
+ }
+ return EGL10.EGL_SUCCESS;
+ }
+
+ public void destroySurface() {
+ destroySurfaceImp();
+ }
+
+ private void destroySurfaceImp() {
+ if (mEglSurface != null && mEglSurface != EGL10.EGL_NO_SURFACE) {
+ mEgl.eglMakeCurrent(mEglDisplay, EGL10.EGL_NO_SURFACE,
+ EGL10.EGL_NO_SURFACE,
+ EGL10.EGL_NO_CONTEXT);
+ mEgl.eglDestroySurface(mEglDisplay, mEglSurface);
+ mEglSurface = null;
+ }
+ }
+
+ public void finish() {
+ if (mEglContext != null) {
+ mEgl.eglDestroyContext(mEglDisplay, mEglContext);
+ mEglContext = null;
+ }
+ if (mEglDisplay != null) {
+ mEgl.eglTerminate(mEglDisplay);
+ mEglDisplay = null;
+ }
+ }
+
+ private void throwEglException(String function) {
+ throwEglException(function, mEgl.eglGetError());
+ }
+
+ public static void throwEglException(String function, int error) {
+ String message = formatEglError(function, error);
+ throw new RuntimeException(message);
+ }
+
+ public static void logEglErrorAsWarning(String tag, String function, int error) {
+ Log.w(tag, formatEglError(function, error));
+ }
+
+ public static String formatEglError(String function, int error) {
+ return function + " failed: " + error;
+ }
+
+ }
+
+ private static class RenderThread extends Thread {
+ private static final int INVALID = -1;
+ private static final int RENDER = 1;
+ private static final int CHANGE_SURFACE = 2;
+ private static final int RESIZE_SURFACE = 3;
+ private static final int FINISH = 4;
+
+ private EglHelper mEglHelper = new EglHelper();
+
+ private Object mLock = new Object();
+ private int mExecMsgId = INVALID;
+ private SurfaceTexture mSurface;
+ private Renderer mRenderer;
+ private int mWidth, mHeight;
+
+ private boolean mFinished = false;
+ private GL10 mGL;
+
+ public RenderThread(Renderer renderer) {
+ super("RenderThread");
+ mRenderer = renderer;
+ start();
+ }
+
+ private void checkRenderer() {
+ if (mRenderer == null) {
+ throw new IllegalArgumentException("Renderer is null!");
+ }
+ }
+
+ private void checkSurface() {
+ if (mSurface == null) {
+ throw new IllegalArgumentException("surface is null!");
+ }
+ }
+
+ public void setSurface(SurfaceTexture surface) {
+ // If the surface is null we're being torn down, don't need a
+ // renderer then
+ if (surface != null) {
+ checkRenderer();
+ }
+ mSurface = surface;
+ exec(CHANGE_SURFACE);
+ }
+
+ public void setSize(int width, int height) {
+ checkRenderer();
+ checkSurface();
+ mWidth = width;
+ mHeight = height;
+ exec(RESIZE_SURFACE);
+ }
+
+ public void render() {
+ checkRenderer();
+ if (mSurface != null) {
+ exec(RENDER);
+ mSurface.updateTexImage();
+ }
+ }
+
+ public void finish() {
+ mSurface = null;
+ exec(FINISH);
+ try {
+ join();
+ } catch (InterruptedException e) {
+ // Ignore
+ }
+ }
+
+ private void exec(int msgid) {
+ synchronized (mLock) {
+ if (mExecMsgId != INVALID) {
+ throw new IllegalArgumentException(
+ "Message already set - multithreaded access?");
+ }
+ mExecMsgId = msgid;
+ mLock.notify();
+ try {
+ mLock.wait();
+ } catch (InterruptedException e) {
+ // Ignore
+ }
+ }
+ }
+
+ private void handleMessageLocked(int what) {
+ switch (what) {
+ case CHANGE_SURFACE:
+ if (mEglHelper.createSurface(mSurface)) {
+ mGL = mEglHelper.createGL();
+ mRenderer.onSurfaceCreated(mGL, mEglHelper.mEglConfig);
+ }
+ break;
+ case RESIZE_SURFACE:
+ mRenderer.onSurfaceChanged(mGL, mWidth, mHeight);
+ break;
+ case RENDER:
+ mRenderer.onDrawFrame(mGL);
+ mEglHelper.swap();
+ break;
+ case FINISH:
+ mEglHelper.destroySurface();
+ mEglHelper.finish();
+ mFinished = true;
+ break;
+ }
+ }
+
+ @Override
+ public void run() {
+ synchronized (mLock) {
+ mEglHelper.start();
+ while (!mFinished) {
+ while (mExecMsgId == INVALID) {
+ try {
+ mLock.wait();
+ } catch (InterruptedException e) {
+ // Ignore
+ }
+ }
+ handleMessageLocked(mExecMsgId);
+ mExecMsgId = INVALID;
+ mLock.notify();
+ }
+ mExecMsgId = FINISH;
+ }
+ }
+ }
+}
diff --git a/src/com/android/photos/views/TiledImageRenderer.java b/src/com/android/photos/views/TiledImageRenderer.java
new file mode 100644
index 0000000..c4e493b
--- /dev/null
+++ b/src/com/android/photos/views/TiledImageRenderer.java
@@ -0,0 +1,825 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.photos.views;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.support.v4.util.LongSparseArray;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.util.Pools.Pool;
+import android.util.Pools.SynchronizedPool;
+import android.view.View;
+import android.view.WindowManager;
+
+import com.android.gallery3d.common.Utils;
+import com.android.gallery3d.glrenderer.BasicTexture;
+import com.android.gallery3d.glrenderer.GLCanvas;
+import com.android.gallery3d.glrenderer.UploadedTexture;
+
+/**
+ * Handles laying out, decoding, and drawing of tiles in GL
+ */
+public class TiledImageRenderer {
+ public static final int SIZE_UNKNOWN = -1;
+
+ private static final String TAG = "TiledImageRenderer";
+ private static final int UPLOAD_LIMIT = 1;
+
+ /*
+ * This is the tile state in the CPU side.
+ * Life of a Tile:
+ * ACTIVATED (initial state)
+ * --> IN_QUEUE - by queueForDecode()
+ * --> RECYCLED - by recycleTile()
+ * IN_QUEUE --> DECODING - by decodeTile()
+ * --> RECYCLED - by recycleTile)
+ * DECODING --> RECYCLING - by recycleTile()
+ * --> DECODED - by decodeTile()
+ * --> DECODE_FAIL - by decodeTile()
+ * RECYCLING --> RECYCLED - by decodeTile()
+ * DECODED --> ACTIVATED - (after the decoded bitmap is uploaded)
+ * DECODED --> RECYCLED - by recycleTile()
+ * DECODE_FAIL -> RECYCLED - by recycleTile()
+ * RECYCLED --> ACTIVATED - by obtainTile()
+ */
+ private static final int STATE_ACTIVATED = 0x01;
+ private static final int STATE_IN_QUEUE = 0x02;
+ private static final int STATE_DECODING = 0x04;
+ private static final int STATE_DECODED = 0x08;
+ private static final int STATE_DECODE_FAIL = 0x10;
+ private static final int STATE_RECYCLING = 0x20;
+ private static final int STATE_RECYCLED = 0x40;
+
+ private static Pool<Bitmap> sTilePool = new SynchronizedPool<Bitmap>(64);
+
+ // TILE_SIZE must be 2^N
+ private int mTileSize;
+
+ private TileSource mModel;
+ private BasicTexture mPreview;
+ protected int mLevelCount; // cache the value of mScaledBitmaps.length
+
+ // The mLevel variable indicates which level of bitmap we should use.
+ // Level 0 means the original full-sized bitmap, and a larger value means
+ // a smaller scaled bitmap (The width and height of each scaled bitmap is
+ // half size of the previous one). If the value is in [0, mLevelCount), we
+ // use the bitmap in mScaledBitmaps[mLevel] for display, otherwise the value
+ // is mLevelCount
+ private int mLevel = 0;
+
+ private int mOffsetX;
+ private int mOffsetY;
+
+ private int mUploadQuota;
+ private boolean mRenderComplete;
+
+ private final RectF mSourceRect = new RectF();
+ private final RectF mTargetRect = new RectF();
+
+ private final LongSparseArray<Tile> mActiveTiles = new LongSparseArray<Tile>();
+
+ // The following three queue are guarded by mQueueLock
+ private final Object mQueueLock = new Object();
+ private final TileQueue mRecycledQueue = new TileQueue();
+ private final TileQueue mUploadQueue = new TileQueue();
+ private final TileQueue mDecodeQueue = new TileQueue();
+
+ // The width and height of the full-sized bitmap
+ protected int mImageWidth = SIZE_UNKNOWN;
+ protected int mImageHeight = SIZE_UNKNOWN;
+
+ protected int mCenterX;
+ protected int mCenterY;
+ protected float mScale;
+ protected int mRotation;
+
+ private boolean mLayoutTiles;
+
+ // Temp variables to avoid memory allocation
+ private final Rect mTileRange = new Rect();
+ private final Rect mActiveRange[] = {new Rect(), new Rect()};
+
+ private TileDecoder mTileDecoder;
+ private boolean mBackgroundTileUploaded;
+
+ private int mViewWidth, mViewHeight;
+ private View mParent;
+
+ /**
+ * Interface for providing tiles to a {@link TiledImageRenderer}
+ */
+ public static interface TileSource {
+
+ /**
+ * If the source does not care about the tile size, it should use
+ * {@link TiledImageRenderer#suggestedTileSize(Context)}
+ */
+ public int getTileSize();
+ public int getImageWidth();
+ public int getImageHeight();
+ public int getRotation();
+
+ /**
+ * Return a Preview image if available. This will be used as the base layer
+ * if higher res tiles are not yet available
+ */
+ public BasicTexture getPreview();
+
+ /**
+ * The tile returned by this method can be specified this way: Assuming
+ * the image size is (width, height), first take the intersection of (0,
+ * 0) - (width, height) and (x, y) - (x + tileSize, y + tileSize). If
+ * in extending the region, we found some part of the region is outside
+ * the image, those pixels are filled with black.
+ *
+ * If level > 0, it does the same operation on a down-scaled version of
+ * the original image (down-scaled by a factor of 2^level), but (x, y)
+ * still refers to the coordinate on the original image.
+ *
+ * The method would be called by the decoder thread.
+ */
+ public Bitmap getTile(int level, int x, int y, Bitmap reuse);
+ }
+
+ public static int suggestedTileSize(Context context) {
+ return isHighResolution(context) ? 512 : 256;
+ }
+
+ private static boolean isHighResolution(Context context) {
+ DisplayMetrics metrics = new DisplayMetrics();
+ WindowManager wm = (WindowManager)
+ context.getSystemService(Context.WINDOW_SERVICE);
+ wm.getDefaultDisplay().getMetrics(metrics);
+ return metrics.heightPixels > 2048 || metrics.widthPixels > 2048;
+ }
+
+ public TiledImageRenderer(View parent) {
+ mParent = parent;
+ mTileDecoder = new TileDecoder();
+ mTileDecoder.start();
+ }
+
+ public int getViewWidth() {
+ return mViewWidth;
+ }
+
+ public int getViewHeight() {
+ return mViewHeight;
+ }
+
+ private void invalidate() {
+ mParent.postInvalidate();
+ }
+
+ public void setModel(TileSource model, int rotation) {
+ if (mModel != model) {
+ mModel = model;
+ notifyModelInvalidated();
+ }
+ if (mRotation != rotation) {
+ mRotation = rotation;
+ mLayoutTiles = true;
+ }
+ }
+
+ private void calculateLevelCount() {
+ if (mPreview != null) {
+ mLevelCount = Math.max(0, Utils.ceilLog2(
+ mImageWidth / (float) mPreview.getWidth()));
+ } else {
+ int levels = 1;
+ int maxDim = Math.max(mImageWidth, mImageHeight);
+ int t = mTileSize;
+ while (t < maxDim) {
+ t <<= 1;
+ levels++;
+ }
+ mLevelCount = levels;
+ }
+ }
+
+ public void notifyModelInvalidated() {
+ invalidateTiles();
+ if (mModel == null) {
+ mImageWidth = 0;
+ mImageHeight = 0;
+ mLevelCount = 0;
+ mPreview = null;
+ } else {
+ mImageWidth = mModel.getImageWidth();
+ mImageHeight = mModel.getImageHeight();
+ mPreview = mModel.getPreview();
+ mTileSize = mModel.getTileSize();
+ calculateLevelCount();
+ }
+ mLayoutTiles = true;
+ }
+
+ public void setViewSize(int width, int height) {
+ mViewWidth = width;
+ mViewHeight = height;
+ }
+
+ public void setPosition(int centerX, int centerY, float scale) {
+ if (mCenterX == centerX && mCenterY == centerY
+ && mScale == scale) {
+ return;
+ }
+ mCenterX = centerX;
+ mCenterY = centerY;
+ mScale = scale;
+ mLayoutTiles = true;
+ }
+
+ // Prepare the tiles we want to use for display.
+ //
+ // 1. Decide the tile level we want to use for display.
+ // 2. Decide the tile levels we want to keep as texture (in addition to
+ // the one we use for display).
+ // 3. Recycle unused tiles.
+ // 4. Activate the tiles we want.
+ private void layoutTiles() {
+ if (mViewWidth == 0 || mViewHeight == 0 || !mLayoutTiles) {
+ return;
+ }
+ mLayoutTiles = false;
+
+ // The tile levels we want to keep as texture is in the range
+ // [fromLevel, endLevel).
+ int fromLevel;
+ int endLevel;
+
+ // We want to use a texture larger than or equal to the display size.
+ mLevel = Utils.clamp(Utils.floorLog2(1f / mScale), 0, mLevelCount);
+
+ // We want to keep one more tile level as texture in addition to what
+ // we use for display. So it can be faster when the scale moves to the
+ // next level. We choose the level closest to the current scale.
+ if (mLevel != mLevelCount) {
+ Rect range = mTileRange;
+ getRange(range, mCenterX, mCenterY, mLevel, mScale, mRotation);
+ mOffsetX = Math.round(mViewWidth / 2f + (range.left - mCenterX) * mScale);
+ mOffsetY = Math.round(mViewHeight / 2f + (range.top - mCenterY) * mScale);
+ fromLevel = mScale * (1 << mLevel) > 0.75f ? mLevel - 1 : mLevel;
+ } else {
+ // Activate the tiles of the smallest two levels.
+ fromLevel = mLevel - 2;
+ mOffsetX = Math.round(mViewWidth / 2f - mCenterX * mScale);
+ mOffsetY = Math.round(mViewHeight / 2f - mCenterY * mScale);
+ }
+
+ fromLevel = Math.max(0, Math.min(fromLevel, mLevelCount - 2));
+ endLevel = Math.min(fromLevel + 2, mLevelCount);
+
+ Rect range[] = mActiveRange;
+ for (int i = fromLevel; i < endLevel; ++i) {
+ getRange(range[i - fromLevel], mCenterX, mCenterY, i, mRotation);
+ }
+
+ // If rotation is transient, don't update the tile.
+ if (mRotation % 90 != 0) {
+ return;
+ }
+
+ synchronized (mQueueLock) {
+ mDecodeQueue.clean();
+ mUploadQueue.clean();
+ mBackgroundTileUploaded = false;
+
+ // Recycle unused tiles: if the level of the active tile is outside the
+ // range [fromLevel, endLevel) or not in the visible range.
+ int n = mActiveTiles.size();
+ for (int i = 0; i < n; i++) {
+ Tile tile = mActiveTiles.valueAt(i);
+ int level = tile.mTileLevel;
+ if (level < fromLevel || level >= endLevel
+ || !range[level - fromLevel].contains(tile.mX, tile.mY)) {
+ mActiveTiles.removeAt(i);
+ i--;
+ n--;
+ recycleTile(tile);
+ }
+ }
+ }
+
+ for (int i = fromLevel; i < endLevel; ++i) {
+ int size = mTileSize << i;
+ Rect r = range[i - fromLevel];
+ for (int y = r.top, bottom = r.bottom; y < bottom; y += size) {
+ for (int x = r.left, right = r.right; x < right; x += size) {
+ activateTile(x, y, i);
+ }
+ }
+ }
+ invalidate();
+ }
+
+ private void invalidateTiles() {
+ synchronized (mQueueLock) {
+ mDecodeQueue.clean();
+ mUploadQueue.clean();
+
+ // TODO(xx): disable decoder
+ int n = mActiveTiles.size();
+ for (int i = 0; i < n; i++) {
+ Tile tile = mActiveTiles.valueAt(i);
+ recycleTile(tile);
+ }
+ mActiveTiles.clear();
+ }
+ }
+
+ private void getRange(Rect out, int cX, int cY, int level, int rotation) {
+ getRange(out, cX, cY, level, 1f / (1 << (level + 1)), rotation);
+ }
+
+ // If the bitmap is scaled by the given factor "scale", return the
+ // rectangle containing visible range. The left-top coordinate returned is
+ // aligned to the tile boundary.
+ //
+ // (cX, cY) is the point on the original bitmap which will be put in the
+ // center of the ImageViewer.
+ private void getRange(Rect out,
+ int cX, int cY, int level, float scale, int rotation) {
+
+ double radians = Math.toRadians(-rotation);
+ double w = mViewWidth;
+ double h = mViewHeight;
+
+ double cos = Math.cos(radians);
+ double sin = Math.sin(radians);
+ int width = (int) Math.ceil(Math.max(
+ Math.abs(cos * w - sin * h), Math.abs(cos * w + sin * h)));
+ int height = (int) Math.ceil(Math.max(
+ Math.abs(sin * w + cos * h), Math.abs(sin * w - cos * h)));
+
+ int left = (int) Math.floor(cX - width / (2f * scale));
+ int top = (int) Math.floor(cY - height / (2f * scale));
+ int right = (int) Math.ceil(left + width / scale);
+ int bottom = (int) Math.ceil(top + height / scale);
+
+ // align the rectangle to tile boundary
+ int size = mTileSize << level;
+ left = Math.max(0, size * (left / size));
+ top = Math.max(0, size * (top / size));
+ right = Math.min(mImageWidth, right);
+ bottom = Math.min(mImageHeight, bottom);
+
+ out.set(left, top, right, bottom);
+ }
+
+ public void freeTextures() {
+ mLayoutTiles = true;
+
+ mTileDecoder.finishAndWait();
+ synchronized (mQueueLock) {
+ mUploadQueue.clean();
+ mDecodeQueue.clean();
+ Tile tile = mRecycledQueue.pop();
+ while (tile != null) {
+ tile.recycle();
+ tile = mRecycledQueue.pop();
+ }
+ }
+
+ int n = mActiveTiles.size();
+ for (int i = 0; i < n; i++) {
+ Tile texture = mActiveTiles.valueAt(i);
+ texture.recycle();
+ }
+ mActiveTiles.clear();
+ mTileRange.set(0, 0, 0, 0);
+
+ while (sTilePool.acquire() != null) {}
+ }
+
+ public boolean draw(GLCanvas canvas) {
+ layoutTiles();
+ uploadTiles(canvas);
+
+ mUploadQuota = UPLOAD_LIMIT;
+ mRenderComplete = true;
+
+ int level = mLevel;
+ int rotation = mRotation;
+ int flags = 0;
+ if (rotation != 0) {
+ flags |= GLCanvas.SAVE_FLAG_MATRIX;
+ }
+
+ if (flags != 0) {
+ canvas.save(flags);
+ if (rotation != 0) {
+ int centerX = mViewWidth / 2, centerY = mViewHeight / 2;
+ canvas.translate(centerX, centerY);
+ canvas.rotate(rotation, 0, 0, 1);
+ canvas.translate(-centerX, -centerY);
+ }
+ }
+ try {
+ if (level != mLevelCount) {
+ int size = (mTileSize << level);
+ float length = size * mScale;
+ Rect r = mTileRange;
+
+ for (int ty = r.top, i = 0; ty < r.bottom; ty += size, i++) {
+ float y = mOffsetY + i * length;
+ for (int tx = r.left, j = 0; tx < r.right; tx += size, j++) {
+ float x = mOffsetX + j * length;
+ drawTile(canvas, tx, ty, level, x, y, length);
+ }
+ }
+ } else if (mPreview != null) {
+ mPreview.draw(canvas, mOffsetX, mOffsetY,
+ Math.round(mImageWidth * mScale),
+ Math.round(mImageHeight * mScale));
+ }
+ } finally {
+ if (flags != 0) {
+ canvas.restore();
+ }
+ }
+
+ if (mRenderComplete) {
+ if (!mBackgroundTileUploaded) {
+ uploadBackgroundTiles(canvas);
+ }
+ } else {
+ invalidate();
+ }
+ return mRenderComplete || mPreview != null;
+ }
+
+ private void uploadBackgroundTiles(GLCanvas canvas) {
+ mBackgroundTileUploaded = true;
+ int n = mActiveTiles.size();
+ for (int i = 0; i < n; i++) {
+ Tile tile = mActiveTiles.valueAt(i);
+ if (!tile.isContentValid()) {
+ queueForDecode(tile);
+ }
+ }
+ }
+
+ private void queueForDecode(Tile tile) {
+ synchronized (mQueueLock) {
+ if (tile.mTileState == STATE_ACTIVATED) {
+ tile.mTileState = STATE_IN_QUEUE;
+ if (mDecodeQueue.push(tile)) {
+ mQueueLock.notifyAll();
+ }
+ }
+ }
+ }
+
+ private void decodeTile(Tile tile) {
+ synchronized (mQueueLock) {
+ if (tile.mTileState != STATE_IN_QUEUE) {
+ return;
+ }
+ tile.mTileState = STATE_DECODING;
+ }
+ boolean decodeComplete = tile.decode();
+ synchronized (mQueueLock) {
+ if (tile.mTileState == STATE_RECYCLING) {
+ tile.mTileState = STATE_RECYCLED;
+ if (tile.mDecodedTile != null) {
+ sTilePool.release(tile.mDecodedTile);
+ tile.mDecodedTile = null;
+ }
+ mRecycledQueue.push(tile);
+ return;
+ }
+ tile.mTileState = decodeComplete ? STATE_DECODED : STATE_DECODE_FAIL;
+ if (!decodeComplete) {
+ return;
+ }
+ mUploadQueue.push(tile);
+ }
+ invalidate();
+ }
+
+ private Tile obtainTile(int x, int y, int level) {
+ synchronized (mQueueLock) {
+ Tile tile = mRecycledQueue.pop();
+ if (tile != null) {
+ tile.mTileState = STATE_ACTIVATED;
+ tile.update(x, y, level);
+ return tile;
+ }
+ return new Tile(x, y, level);
+ }
+ }
+
+ private void recycleTile(Tile tile) {
+ synchronized (mQueueLock) {
+ if (tile.mTileState == STATE_DECODING) {
+ tile.mTileState = STATE_RECYCLING;
+ return;
+ }
+ tile.mTileState = STATE_RECYCLED;
+ if (tile.mDecodedTile != null) {
+ sTilePool.release(tile.mDecodedTile);
+ tile.mDecodedTile = null;
+ }
+ mRecycledQueue.push(tile);
+ }
+ }
+
+ private void activateTile(int x, int y, int level) {
+ long key = makeTileKey(x, y, level);
+ Tile tile = mActiveTiles.get(key);
+ if (tile != null) {
+ if (tile.mTileState == STATE_IN_QUEUE) {
+ tile.mTileState = STATE_ACTIVATED;
+ }
+ return;
+ }
+ tile = obtainTile(x, y, level);
+ mActiveTiles.put(key, tile);
+ }
+
+ private Tile getTile(int x, int y, int level) {
+ return mActiveTiles.get(makeTileKey(x, y, level));
+ }
+
+ private static long makeTileKey(int x, int y, int level) {
+ long result = x;
+ result = (result << 16) | y;
+ result = (result << 16) | level;
+ return result;
+ }
+
+ private void uploadTiles(GLCanvas canvas) {
+ int quota = UPLOAD_LIMIT;
+ Tile tile = null;
+ while (quota > 0) {
+ synchronized (mQueueLock) {
+ tile = mUploadQueue.pop();
+ }
+ if (tile == null) {
+ break;
+ }
+ if (!tile.isContentValid()) {
+ if (tile.mTileState == STATE_DECODED) {
+ tile.updateContent(canvas);
+ --quota;
+ } else {
+ Log.w(TAG, "Tile in upload queue has invalid state: " + tile.mTileState);
+ }
+ }
+ }
+ if (tile != null) {
+ invalidate();
+ }
+ }
+
+ // Draw the tile to a square at canvas that locates at (x, y) and
+ // has a side length of length.
+ private void drawTile(GLCanvas canvas,
+ int tx, int ty, int level, float x, float y, float length) {
+ RectF source = mSourceRect;
+ RectF target = mTargetRect;
+ target.set(x, y, x + length, y + length);
+ source.set(0, 0, mTileSize, mTileSize);
+
+ Tile tile = getTile(tx, ty, level);
+ if (tile != null) {
+ if (!tile.isContentValid()) {
+ if (tile.mTileState == STATE_DECODED) {
+ if (mUploadQuota > 0) {
+ --mUploadQuota;
+ tile.updateContent(canvas);
+ } else {
+ mRenderComplete = false;
+ }
+ } else if (tile.mTileState != STATE_DECODE_FAIL){
+ mRenderComplete = false;
+ queueForDecode(tile);
+ }
+ }
+ if (drawTile(tile, canvas, source, target)) {
+ return;
+ }
+ }
+ if (mPreview != null) {
+ int size = mTileSize << level;
+ float scaleX = (float) mPreview.getWidth() / mImageWidth;
+ float scaleY = (float) mPreview.getHeight() / mImageHeight;
+ source.set(tx * scaleX, ty * scaleY, (tx + size) * scaleX,
+ (ty + size) * scaleY);
+ canvas.drawTexture(mPreview, source, target);
+ }
+ }
+
+ private boolean drawTile(
+ Tile tile, GLCanvas canvas, RectF source, RectF target) {
+ while (true) {
+ if (tile.isContentValid()) {
+ canvas.drawTexture(tile, source, target);
+ return true;
+ }
+
+ // Parent can be divided to four quads and tile is one of the four.
+ Tile parent = tile.getParentTile();
+ if (parent == null) {
+ return false;
+ }
+ if (tile.mX == parent.mX) {
+ source.left /= 2f;
+ source.right /= 2f;
+ } else {
+ source.left = (mTileSize + source.left) / 2f;
+ source.right = (mTileSize + source.right) / 2f;
+ }
+ if (tile.mY == parent.mY) {
+ source.top /= 2f;
+ source.bottom /= 2f;
+ } else {
+ source.top = (mTileSize + source.top) / 2f;
+ source.bottom = (mTileSize + source.bottom) / 2f;
+ }
+ tile = parent;
+ }
+ }
+
+ private class Tile extends UploadedTexture {
+ public int mX;
+ public int mY;
+ public int mTileLevel;
+ public Tile mNext;
+ public Bitmap mDecodedTile;
+ public volatile int mTileState = STATE_ACTIVATED;
+
+ public Tile(int x, int y, int level) {
+ mX = x;
+ mY = y;
+ mTileLevel = level;
+ }
+
+ @Override
+ protected void onFreeBitmap(Bitmap bitmap) {
+ sTilePool.release(bitmap);
+ }
+
+ boolean decode() {
+ // Get a tile from the original image. The tile is down-scaled
+ // by (1 << mTilelevel) from a region in the original image.
+ try {
+ Bitmap reuse = sTilePool.acquire();
+ if (reuse != null && reuse.getWidth() != mTileSize) {
+ reuse = null;
+ }
+ mDecodedTile = mModel.getTile(mTileLevel, mX, mY, reuse);
+ } catch (Throwable t) {
+ Log.w(TAG, "fail to decode tile", t);
+ }
+ return mDecodedTile != null;
+ }
+
+ @Override
+ protected Bitmap onGetBitmap() {
+ Utils.assertTrue(mTileState == STATE_DECODED);
+
+ // We need to override the width and height, so that we won't
+ // draw beyond the boundaries.
+ int rightEdge = ((mImageWidth - mX) >> mTileLevel);
+ int bottomEdge = ((mImageHeight - mY) >> mTileLevel);
+ setSize(Math.min(mTileSize, rightEdge), Math.min(mTileSize, bottomEdge));
+
+ Bitmap bitmap = mDecodedTile;
+ mDecodedTile = null;
+ mTileState = STATE_ACTIVATED;
+ return bitmap;
+ }
+
+ // We override getTextureWidth() and getTextureHeight() here, so the
+ // texture can be re-used for different tiles regardless of the actual
+ // size of the tile (which may be small because it is a tile at the
+ // boundary).
+ @Override
+ public int getTextureWidth() {
+ return mTileSize;
+ }
+
+ @Override
+ public int getTextureHeight() {
+ return mTileSize;
+ }
+
+ public void update(int x, int y, int level) {
+ mX = x;
+ mY = y;
+ mTileLevel = level;
+ invalidateContent();
+ }
+
+ public Tile getParentTile() {
+ if (mTileLevel + 1 == mLevelCount) {
+ return null;
+ }
+ int size = mTileSize << (mTileLevel + 1);
+ int x = size * (mX / size);
+ int y = size * (mY / size);
+ return getTile(x, y, mTileLevel + 1);
+ }
+
+ @Override
+ public String toString() {
+ return String.format("tile(%s, %s, %s / %s)",
+ mX / mTileSize, mY / mTileSize, mLevel, mLevelCount);
+ }
+ }
+
+ private static class TileQueue {
+ private Tile mHead;
+
+ public Tile pop() {
+ Tile tile = mHead;
+ if (tile != null) {
+ mHead = tile.mNext;
+ }
+ return tile;
+ }
+
+ public boolean push(Tile tile) {
+ if (contains(tile)) {
+ Log.w(TAG, "Attempting to add a tile already in the queue!");
+ return false;
+ }
+ boolean wasEmpty = mHead == null;
+ tile.mNext = mHead;
+ mHead = tile;
+ return wasEmpty;
+ }
+
+ private boolean contains(Tile tile) {
+ Tile other = mHead;
+ while (other != null) {
+ if (other == tile) {
+ return true;
+ }
+ other = other.mNext;
+ }
+ return false;
+ }
+
+ public void clean() {
+ mHead = null;
+ }
+ }
+
+ private class TileDecoder extends Thread {
+
+ public void finishAndWait() {
+ interrupt();
+ try {
+ join();
+ } catch (InterruptedException e) {
+ Log.w(TAG, "Interrupted while waiting for TileDecoder thread to finish!");
+ }
+ }
+
+ private Tile waitForTile() throws InterruptedException {
+ synchronized (mQueueLock) {
+ while (true) {
+ Tile tile = mDecodeQueue.pop();
+ if (tile != null) {
+ return tile;
+ }
+ mQueueLock.wait();
+ }
+ }
+ }
+
+ @Override
+ public void run() {
+ try {
+ while (!isInterrupted()) {
+ Tile tile = waitForTile();
+ decodeTile(tile);
+ }
+ } catch (InterruptedException ex) {
+ // We were finished
+ }
+ }
+
+ }
+}
diff --git a/src/com/android/photos/views/TiledImageView.java b/src/com/android/photos/views/TiledImageView.java
new file mode 100644
index 0000000..36cb438
--- /dev/null
+++ b/src/com/android/photos/views/TiledImageView.java
@@ -0,0 +1,386 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.photos.views;
+
+import android.annotation.SuppressLint;
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.graphics.Paint.Align;
+import android.graphics.RectF;
+import android.opengl.GLSurfaceView;
+import android.opengl.GLSurfaceView.Renderer;
+import android.os.Build;
+import android.util.AttributeSet;
+import android.view.Choreographer;
+import android.view.Choreographer.FrameCallback;
+import android.view.View;
+import android.widget.FrameLayout;
+
+import com.android.gallery3d.glrenderer.BasicTexture;
+import com.android.gallery3d.glrenderer.GLES20Canvas;
+import com.android.photos.views.TiledImageRenderer.TileSource;
+
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL10;
+
+/**
+ * Shows an image using {@link TiledImageRenderer} using either {@link GLSurfaceView}
+ * or {@link BlockingGLTextureView}.
+ */
+public class TiledImageView extends FrameLayout {
+
+ private static final boolean USE_TEXTURE_VIEW = false;
+ private static final boolean IS_SUPPORTED =
+ Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;
+ private static final boolean USE_CHOREOGRAPHER =
+ Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;
+
+ private BlockingGLTextureView mTextureView;
+ private GLSurfaceView mGLSurfaceView;
+ private boolean mInvalPending = false;
+ private FrameCallback mFrameCallback;
+
+ protected static class ImageRendererWrapper {
+ // Guarded by locks
+ public float scale;
+ public int centerX, centerY;
+ int rotation;
+ public TileSource source;
+ Runnable isReadyCallback;
+
+ // GL thread only
+ TiledImageRenderer image;
+ }
+
+ private float[] mValues = new float[9];
+
+ // -------------------------
+ // Guarded by mLock
+ // -------------------------
+ protected Object mLock = new Object();
+ protected ImageRendererWrapper mRenderer;
+
+ public static boolean isTilingSupported() {
+ return IS_SUPPORTED;
+ }
+
+ public TiledImageView(Context context) {
+ this(context, null);
+ }
+
+ public TiledImageView(Context context, AttributeSet attrs) {
+ super(context, attrs);
+ if (!IS_SUPPORTED) {
+ return;
+ }
+
+ mRenderer = new ImageRendererWrapper();
+ mRenderer.image = new TiledImageRenderer(this);
+ View view;
+ if (USE_TEXTURE_VIEW) {
+ mTextureView = new BlockingGLTextureView(context);
+ mTextureView.setRenderer(new TileRenderer());
+ view = mTextureView;
+ } else {
+ mGLSurfaceView = new GLSurfaceView(context);
+ mGLSurfaceView.setEGLContextClientVersion(2);
+ mGLSurfaceView.setRenderer(new TileRenderer());
+ mGLSurfaceView.setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
+ view = mGLSurfaceView;
+ }
+ addView(view, new LayoutParams(
+ LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
+ //setTileSource(new ColoredTiles());
+ }
+
+ public void destroy() {
+ if (!IS_SUPPORTED) {
+ return;
+ }
+ if (USE_TEXTURE_VIEW) {
+ mTextureView.destroy();
+ } else {
+ mGLSurfaceView.queueEvent(mFreeTextures);
+ }
+ }
+
+ private Runnable mFreeTextures = new Runnable() {
+
+ @Override
+ public void run() {
+ mRenderer.image.freeTextures();
+ }
+ };
+
+ public void onPause() {
+ if (!IS_SUPPORTED) {
+ return;
+ }
+ if (!USE_TEXTURE_VIEW) {
+ mGLSurfaceView.onPause();
+ }
+ }
+
+ public void onResume() {
+ if (!IS_SUPPORTED) {
+ return;
+ }
+ if (!USE_TEXTURE_VIEW) {
+ mGLSurfaceView.onResume();
+ }
+ }
+
+ public void setTileSource(TileSource source, Runnable isReadyCallback) {
+ if (!IS_SUPPORTED) {
+ return;
+ }
+ synchronized (mLock) {
+ mRenderer.source = source;
+ mRenderer.isReadyCallback = isReadyCallback;
+ mRenderer.centerX = source != null ? source.getImageWidth() / 2 : 0;
+ mRenderer.centerY = source != null ? source.getImageHeight() / 2 : 0;
+ mRenderer.rotation = source != null ? source.getRotation() : 0;
+ mRenderer.scale = 0;
+ updateScaleIfNecessaryLocked(mRenderer);
+ }
+ invalidate();
+ }
+
+ @Override
+ protected void onLayout(boolean changed, int left, int top, int right,
+ int bottom) {
+ super.onLayout(changed, left, top, right, bottom);
+ if (!IS_SUPPORTED) {
+ return;
+ }
+ synchronized (mLock) {
+ updateScaleIfNecessaryLocked(mRenderer);
+ }
+ }
+
+ private void updateScaleIfNecessaryLocked(ImageRendererWrapper renderer) {
+ if (renderer == null || renderer.source == null
+ || renderer.scale > 0 || getWidth() == 0) {
+ return;
+ }
+ renderer.scale = Math.min(
+ (float) getWidth() / (float) renderer.source.getImageWidth(),
+ (float) getHeight() / (float) renderer.source.getImageHeight());
+ }
+
+ @Override
+ protected void dispatchDraw(Canvas canvas) {
+ if (!IS_SUPPORTED) {
+ return;
+ }
+ if (USE_TEXTURE_VIEW) {
+ mTextureView.render();
+ }
+ super.dispatchDraw(canvas);
+ }
+
+ @SuppressLint("NewApi")
+ @Override
+ public void setTranslationX(float translationX) {
+ if (!IS_SUPPORTED) {
+ return;
+ }
+ super.setTranslationX(translationX);
+ }
+
+ @Override
+ public void invalidate() {
+ if (!IS_SUPPORTED) {
+ return;
+ }
+ if (USE_TEXTURE_VIEW) {
+ super.invalidate();
+ mTextureView.invalidate();
+ } else {
+ if (USE_CHOREOGRAPHER) {
+ invalOnVsync();
+ } else {
+ mGLSurfaceView.requestRender();
+ }
+ }
+ }
+
+ @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
+ private void invalOnVsync() {
+ if (!mInvalPending) {
+ mInvalPending = true;
+ if (mFrameCallback == null) {
+ mFrameCallback = new FrameCallback() {
+ @Override
+ public void doFrame(long frameTimeNanos) {
+ mInvalPending = false;
+ mGLSurfaceView.requestRender();
+ }
+ };
+ }
+ Choreographer.getInstance().postFrameCallback(mFrameCallback);
+ }
+ }
+
+ private RectF mTempRectF = new RectF();
+ public void positionFromMatrix(Matrix matrix) {
+ if (!IS_SUPPORTED) {
+ return;
+ }
+ if (mRenderer.source != null) {
+ final int rotation = mRenderer.source.getRotation();
+ final boolean swap = !(rotation % 180 == 0);
+ final int width = swap ? mRenderer.source.getImageHeight()
+ : mRenderer.source.getImageWidth();
+ final int height = swap ? mRenderer.source.getImageWidth()
+ : mRenderer.source.getImageHeight();
+ mTempRectF.set(0, 0, width, height);
+ matrix.mapRect(mTempRectF);
+ matrix.getValues(mValues);
+ int cx = width / 2;
+ int cy = height / 2;
+ float scale = mValues[Matrix.MSCALE_X];
+ int xoffset = Math.round((getWidth() - mTempRectF.width()) / 2 / scale);
+ int yoffset = Math.round((getHeight() - mTempRectF.height()) / 2 / scale);
+ if (rotation == 90 || rotation == 180) {
+ cx += (mTempRectF.left / scale) - xoffset;
+ } else {
+ cx -= (mTempRectF.left / scale) - xoffset;
+ }
+ if (rotation == 180 || rotation == 270) {
+ cy += (mTempRectF.top / scale) - yoffset;
+ } else {
+ cy -= (mTempRectF.top / scale) - yoffset;
+ }
+ mRenderer.scale = scale;
+ mRenderer.centerX = swap ? cy : cx;
+ mRenderer.centerY = swap ? cx : cy;
+ invalidate();
+ }
+ }
+
+ private class TileRenderer implements Renderer {
+
+ private GLES20Canvas mCanvas;
+
+ @Override
+ public void onSurfaceCreated(GL10 gl, EGLConfig config) {
+ mCanvas = new GLES20Canvas();
+ BasicTexture.invalidateAllTextures();
+ mRenderer.image.setModel(mRenderer.source, mRenderer.rotation);
+ }
+
+ @Override
+ public void onSurfaceChanged(GL10 gl, int width, int height) {
+ mCanvas.setSize(width, height);
+ mRenderer.image.setViewSize(width, height);
+ }
+
+ @Override
+ public void onDrawFrame(GL10 gl) {
+ mCanvas.clearBuffer();
+ Runnable readyCallback;
+ synchronized (mLock) {
+ readyCallback = mRenderer.isReadyCallback;
+ mRenderer.image.setModel(mRenderer.source, mRenderer.rotation);
+ mRenderer.image.setPosition(mRenderer.centerX, mRenderer.centerY,
+ mRenderer.scale);
+ }
+ boolean complete = mRenderer.image.draw(mCanvas);
+ if (complete && readyCallback != null) {
+ synchronized (mLock) {
+ // Make sure we don't trample on a newly set callback/source
+ // if it changed while we were rendering
+ if (mRenderer.isReadyCallback == readyCallback) {
+ mRenderer.isReadyCallback = null;
+ }
+ }
+ if (readyCallback != null) {
+ post(readyCallback);
+ }
+ }
+ }
+
+ }
+
+ @SuppressWarnings("unused")
+ private static class ColoredTiles implements TileSource {
+ private static final int[] COLORS = new int[] {
+ Color.RED,
+ Color.BLUE,
+ Color.YELLOW,
+ Color.GREEN,
+ Color.CYAN,
+ Color.MAGENTA,
+ Color.WHITE,
+ };
+
+ private Paint mPaint = new Paint();
+ private Canvas mCanvas = new Canvas();
+
+ @Override
+ public int getTileSize() {
+ return 256;
+ }
+
+ @Override
+ public int getImageWidth() {
+ return 16384;
+ }
+
+ @Override
+ public int getImageHeight() {
+ return 8192;
+ }
+
+ @Override
+ public int getRotation() {
+ return 0;
+ }
+
+ @Override
+ public Bitmap getTile(int level, int x, int y, Bitmap bitmap) {
+ int tileSize = getTileSize();
+ if (bitmap == null) {
+ bitmap = Bitmap.createBitmap(tileSize, tileSize,
+ Bitmap.Config.ARGB_8888);
+ }
+ mCanvas.setBitmap(bitmap);
+ mCanvas.drawColor(COLORS[level]);
+ mPaint.setColor(Color.BLACK);
+ mPaint.setTextSize(20);
+ mPaint.setTextAlign(Align.CENTER);
+ mCanvas.drawText(x + "x" + y, 128, 128, mPaint);
+ tileSize <<= level;
+ x /= tileSize;
+ y /= tileSize;
+ mCanvas.drawText(x + "x" + y + " @ " + level, 128, 30, mPaint);
+ mCanvas.setBitmap(null);
+ return bitmap;
+ }
+
+ @Override
+ public BasicTexture getPreview() {
+ return null;
+ }
+ }
+}