| /* |
| * 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. |
| */ |
| |
| #define LOG_TAG "BitmapRegionDecoder" |
| |
| #include "SkBitmap.h" |
| #include "SkImageEncoder.h" |
| #include "GraphicsJNI.h" |
| #include "SkUtils.h" |
| #include "SkTemplates.h" |
| #include "SkPixelRef.h" |
| #include "SkStream.h" |
| #include "BitmapFactory.h" |
| #include "AutoDecodeCancel.h" |
| #include "SkBitmapRegionDecoder.h" |
| #include "CreateJavaOutputStreamAdaptor.h" |
| #include "Utils.h" |
| #include "JNIHelp.h" |
| |
| #include <android_runtime/AndroidRuntime.h> |
| #include "android_util_Binder.h" |
| #include "android_nio_utils.h" |
| #include "CreateJavaOutputStreamAdaptor.h" |
| |
| #include <binder/Parcel.h> |
| #include <jni.h> |
| #include <utils/Asset.h> |
| #include <sys/stat.h> |
| |
| #if 0 |
| #define TRACE_BITMAP(code) code |
| #else |
| #define TRACE_BITMAP(code) |
| #endif |
| |
| using namespace android; |
| |
| static SkMemoryStream* buildSkMemoryStream(SkStream *stream) { |
| size_t bufferSize = 4096; |
| size_t streamLen = 0; |
| size_t len; |
| char* data = (char*)sk_malloc_throw(bufferSize); |
| |
| while ((len = stream->read(data + streamLen, |
| bufferSize - streamLen)) != 0) { |
| streamLen += len; |
| if (streamLen == bufferSize) { |
| bufferSize *= 2; |
| data = (char*)sk_realloc_throw(data, bufferSize); |
| } |
| } |
| data = (char*)sk_realloc_throw(data, streamLen); |
| |
| SkMemoryStream* streamMem = new SkMemoryStream(); |
| streamMem->setMemoryOwned(data, streamLen); |
| return streamMem; |
| } |
| |
| static jobject doBuildTileIndex(JNIEnv* env, SkStream* stream) { |
| SkImageDecoder* decoder = SkImageDecoder::Factory(stream); |
| int width, height; |
| if (NULL == decoder) { |
| doThrowIOE(env, "Image format not supported"); |
| return nullObjectReturn("SkImageDecoder::Factory returned null"); |
| } |
| |
| JavaPixelAllocator *javaAllocator = new JavaPixelAllocator(env); |
| decoder->setAllocator(javaAllocator); |
| javaAllocator->unref(); |
| |
| if (!decoder->buildTileIndex(stream, &width, &height)) { |
| char msg[100]; |
| snprintf(msg, sizeof(msg), "Image failed to decode using %s decoder", |
| decoder->getFormatName()); |
| doThrowIOE(env, msg); |
| return nullObjectReturn("decoder->buildTileIndex returned false"); |
| } |
| |
| SkBitmapRegionDecoder *bm = new SkBitmapRegionDecoder(decoder, stream, width, height); |
| |
| return GraphicsJNI::createBitmapRegionDecoder(env, bm); |
| } |
| |
| static jobject nativeNewInstanceFromByteArray(JNIEnv* env, jobject, jbyteArray byteArray, |
| int offset, int length, jboolean isShareable) { |
| /* If isShareable we could decide to just wrap the java array and |
| share it, but that means adding a globalref to the java array object |
| For now we just always copy the array's data if isShareable. |
| */ |
| AutoJavaByteArray ar(env, byteArray); |
| SkStream* stream = new SkMemoryStream(ar.ptr() + offset, length, true); |
| return doBuildTileIndex(env, stream); |
| } |
| |
| static jobject nativeNewInstanceFromFileDescriptor(JNIEnv* env, jobject clazz, |
| jobject fileDescriptor, jboolean isShareable) { |
| NPE_CHECK_RETURN_ZERO(env, fileDescriptor); |
| |
| jint descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor); |
| SkStream *stream = NULL; |
| struct stat fdStat; |
| int newFD; |
| if (fstat(descriptor, &fdStat) == -1) { |
| doThrowIOE(env, "broken file descriptor"); |
| return nullObjectReturn("fstat return -1"); |
| } |
| |
| if (isShareable && |
| S_ISREG(fdStat.st_mode) && |
| (newFD = ::dup(descriptor)) != -1) { |
| SkFDStream* fdStream = new SkFDStream(newFD, true); |
| if (!fdStream->isValid()) { |
| fdStream->unref(); |
| return NULL; |
| } |
| stream = fdStream; |
| } else { |
| /* Restore our offset when we leave, so we can be called more than once |
| with the same descriptor. This is only required if we didn't dup the |
| file descriptor, but it is OK to do it all the time. |
| */ |
| AutoFDSeek as(descriptor); |
| |
| SkFDStream* fdStream = new SkFDStream(descriptor, false); |
| if (!fdStream->isValid()) { |
| fdStream->unref(); |
| return NULL; |
| } |
| stream = buildSkMemoryStream(fdStream); |
| fdStream->unref(); |
| } |
| |
| return doBuildTileIndex(env, stream); |
| } |
| |
| static jobject nativeNewInstanceFromStream(JNIEnv* env, jobject clazz, |
| jobject is, // InputStream |
| jbyteArray storage, // byte[] |
| jboolean isShareable) { |
| jobject largeBitmap = NULL; |
| SkStream* stream = CreateJavaInputStreamAdaptor(env, is, storage, 1024); |
| |
| if (stream) { |
| // for now we don't allow shareable with java inputstreams |
| SkMemoryStream *mStream = buildSkMemoryStream(stream); |
| largeBitmap = doBuildTileIndex(env, mStream); |
| stream->unref(); |
| } |
| return largeBitmap; |
| } |
| |
| static jobject nativeNewInstanceFromAsset(JNIEnv* env, jobject clazz, |
| jint native_asset, // Asset |
| jboolean isShareable) { |
| SkStream* stream, *assStream; |
| Asset* asset = reinterpret_cast<Asset*>(native_asset); |
| assStream = new AssetStreamAdaptor(asset); |
| stream = buildSkMemoryStream(assStream); |
| assStream->unref(); |
| return doBuildTileIndex(env, stream); |
| } |
| |
| /* |
| * nine patch not supported |
| * |
| * purgeable not supported |
| * reportSizeToVM not supported |
| */ |
| static jobject nativeDecodeRegion(JNIEnv* env, jobject, SkBitmapRegionDecoder *brd, |
| int start_x, int start_y, int width, int height, jobject options) { |
| SkImageDecoder *decoder = brd->getDecoder(); |
| int sampleSize = 1; |
| SkBitmap::Config prefConfig = SkBitmap::kNo_Config; |
| bool doDither = true; |
| bool preferQualityOverSpeed = false; |
| |
| if (NULL != options) { |
| sampleSize = env->GetIntField(options, gOptions_sampleSizeFieldID); |
| // initialize these, in case we fail later on |
| env->SetIntField(options, gOptions_widthFieldID, -1); |
| env->SetIntField(options, gOptions_heightFieldID, -1); |
| env->SetObjectField(options, gOptions_mimeFieldID, 0); |
| |
| jobject jconfig = env->GetObjectField(options, gOptions_configFieldID); |
| prefConfig = GraphicsJNI::getNativeBitmapConfig(env, jconfig); |
| doDither = env->GetBooleanField(options, gOptions_ditherFieldID); |
| preferQualityOverSpeed = env->GetBooleanField(options, |
| gOptions_preferQualityOverSpeedFieldID); |
| } |
| |
| decoder->setDitherImage(doDither); |
| decoder->setPreferQualityOverSpeed(preferQualityOverSpeed); |
| SkBitmap* bitmap = new SkBitmap; |
| SkAutoTDelete<SkBitmap> adb(bitmap); |
| AutoDecoderCancel adc(options, decoder); |
| |
| // To fix the race condition in case "requestCancelDecode" |
| // happens earlier than AutoDecoderCancel object is added |
| // to the gAutoDecoderCancelMutex linked list. |
| if (NULL != options && env->GetBooleanField(options, gOptions_mCancelID)) { |
| return nullObjectReturn("gOptions_mCancelID");; |
| } |
| |
| SkIRect region; |
| region.fLeft = start_x; |
| region.fTop = start_y; |
| region.fRight = start_x + width; |
| region.fBottom = start_y + height; |
| |
| if (!brd->decodeRegion(bitmap, region, prefConfig, sampleSize)) { |
| return nullObjectReturn("decoder->decodeRegion returned false"); |
| } |
| |
| // update options (if any) |
| if (NULL != options) { |
| env->SetIntField(options, gOptions_widthFieldID, bitmap->width()); |
| env->SetIntField(options, gOptions_heightFieldID, bitmap->height()); |
| // TODO: set the mimeType field with the data from the codec. |
| // but how to reuse a set of strings, rather than allocating new one |
| // each time? |
| env->SetObjectField(options, gOptions_mimeFieldID, |
| getMimeTypeString(env, decoder->getFormat())); |
| } |
| |
| // detach bitmap from its autodeleter, since we want to own it now |
| adb.detach(); |
| |
| SkPixelRef* pr = bitmap->pixelRef(); |
| // promise we will never change our pixels (great for sharing and pictures) |
| pr->setImmutable(); |
| |
| JavaPixelAllocator* allocator = (JavaPixelAllocator*) decoder->getAllocator(); |
| jbyteArray buff = allocator->getStorageObjAndReset(); |
| return GraphicsJNI::createBitmap(env, bitmap, buff, false, NULL, -1); |
| } |
| |
| static int nativeGetHeight(JNIEnv* env, jobject, SkBitmapRegionDecoder *brd) { |
| return brd->getHeight(); |
| } |
| |
| static int nativeGetWidth(JNIEnv* env, jobject, SkBitmapRegionDecoder *brd) { |
| return brd->getWidth(); |
| } |
| |
| static void nativeClean(JNIEnv* env, jobject, SkBitmapRegionDecoder *brd) { |
| delete brd; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include <android_runtime/AndroidRuntime.h> |
| |
| static JNINativeMethod gBitmapRegionDecoderMethods[] = { |
| { "nativeDecodeRegion", |
| "(IIIIILandroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", |
| (void*)nativeDecodeRegion}, |
| |
| { "nativeGetHeight", "(I)I", (void*)nativeGetHeight}, |
| |
| { "nativeGetWidth", "(I)I", (void*)nativeGetWidth}, |
| |
| { "nativeClean", "(I)V", (void*)nativeClean}, |
| |
| { "nativeNewInstance", |
| "([BIIZ)Landroid/graphics/BitmapRegionDecoder;", |
| (void*)nativeNewInstanceFromByteArray |
| }, |
| |
| { "nativeNewInstance", |
| "(Ljava/io/InputStream;[BZ)Landroid/graphics/BitmapRegionDecoder;", |
| (void*)nativeNewInstanceFromStream |
| }, |
| |
| { "nativeNewInstance", |
| "(Ljava/io/FileDescriptor;Z)Landroid/graphics/BitmapRegionDecoder;", |
| (void*)nativeNewInstanceFromFileDescriptor |
| }, |
| |
| { "nativeNewInstance", |
| "(IZ)Landroid/graphics/BitmapRegionDecoder;", |
| (void*)nativeNewInstanceFromAsset |
| }, |
| }; |
| |
| #define kClassPathName "android/graphics/BitmapRegionDecoder" |
| |
| int register_android_graphics_BitmapRegionDecoder(JNIEnv* env) |
| { |
| return android::AndroidRuntime::registerNativeMethods(env, kClassPathName, |
| gBitmapRegionDecoderMethods, SK_ARRAY_COUNT(gBitmapRegionDecoderMethods)); |
| } |