| /* |
| * 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.data; |
| |
| import android.media.ExifInterface; |
| |
| import com.android.gallery3d.R; |
| import com.android.gallery3d.common.ExifTags; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map.Entry; |
| import java.util.TreeMap; |
| |
| public class MediaDetails implements Iterable<Entry<Integer, Object>> { |
| @SuppressWarnings("unused") |
| private static final String TAG = "MediaDetails"; |
| |
| private TreeMap<Integer, Object> mDetails = new TreeMap<Integer, Object>(); |
| private HashMap<Integer, Integer> mUnits = new HashMap<Integer, Integer>(); |
| |
| public static final int INDEX_TITLE = 1; |
| public static final int INDEX_DESCRIPTION = 2; |
| public static final int INDEX_DATETIME = 3; |
| public static final int INDEX_LOCATION = 4; |
| public static final int INDEX_WIDTH = 5; |
| public static final int INDEX_HEIGHT = 6; |
| public static final int INDEX_ORIENTATION = 7; |
| public static final int INDEX_DURATION = 8; |
| public static final int INDEX_MIMETYPE = 9; |
| public static final int INDEX_SIZE = 10; |
| |
| // for EXIF |
| public static final int INDEX_MAKE = 100; |
| public static final int INDEX_MODEL = 101; |
| public static final int INDEX_FLASH = 102; |
| public static final int INDEX_FOCAL_LENGTH = 103; |
| public static final int INDEX_WHITE_BALANCE = 104; |
| public static final int INDEX_APERTURE = 105; |
| public static final int INDEX_SHUTTER_SPEED = 106; |
| public static final int INDEX_EXPOSURE_TIME = 107; |
| public static final int INDEX_ISO = 108; |
| |
| // Put this last because it may be long. |
| public static final int INDEX_PATH = 200; |
| |
| public static class FlashState { |
| private static int FLASH_FIRED_MASK = 1; |
| private static int FLASH_RETURN_MASK = 2 | 4; |
| private static int FLASH_MODE_MASK = 8 | 16; |
| private static int FLASH_FUNCTION_MASK = 32; |
| private static int FLASH_RED_EYE_MASK = 64; |
| private int mState; |
| |
| public FlashState(int state) { |
| mState = state; |
| } |
| |
| public boolean isFlashFired() { |
| return (mState & FLASH_FIRED_MASK) != 0; |
| } |
| } |
| |
| public void addDetail(int index, Object value) { |
| mDetails.put(index, value); |
| } |
| |
| public Object getDetail(int index) { |
| return mDetails.get(index); |
| } |
| |
| public int size() { |
| return mDetails.size(); |
| } |
| |
| @Override |
| public Iterator<Entry<Integer, Object>> iterator() { |
| return mDetails.entrySet().iterator(); |
| } |
| |
| public void setUnit(int index, int unit) { |
| mUnits.put(index, unit); |
| } |
| |
| public boolean hasUnit(int index) { |
| return mUnits.containsKey(index); |
| } |
| |
| public int getUnit(int index) { |
| return mUnits.get(index); |
| } |
| |
| private static void setExifData(MediaDetails details, ExifInterface exif, String tag, |
| int key) { |
| String value = exif.getAttribute(tag); |
| if (value != null) { |
| if (key == MediaDetails.INDEX_FLASH) { |
| MediaDetails.FlashState state = new MediaDetails.FlashState( |
| Integer.valueOf(value.toString())); |
| details.addDetail(key, state); |
| } else { |
| details.addDetail(key, value); |
| } |
| } |
| } |
| |
| public static void extractExifInfo(MediaDetails details, String filePath) { |
| try { |
| ExifInterface exif = new ExifInterface(filePath); |
| setExifData(details, exif, ExifInterface.TAG_FLASH, MediaDetails.INDEX_FLASH); |
| setExifData(details, exif, ExifInterface.TAG_IMAGE_WIDTH, MediaDetails.INDEX_WIDTH); |
| setExifData(details, exif, ExifInterface.TAG_IMAGE_LENGTH, |
| MediaDetails.INDEX_HEIGHT); |
| setExifData(details, exif, ExifInterface.TAG_MAKE, MediaDetails.INDEX_MAKE); |
| setExifData(details, exif, ExifInterface.TAG_MODEL, MediaDetails.INDEX_MODEL); |
| setExifData(details, exif, ExifTags.TAG_APERTURE, MediaDetails.INDEX_APERTURE); |
| setExifData(details, exif, ExifTags.TAG_ISO, MediaDetails.INDEX_ISO); |
| setExifData(details, exif, ExifInterface.TAG_WHITE_BALANCE, |
| MediaDetails.INDEX_WHITE_BALANCE); |
| setExifData(details, exif, ExifTags.TAG_EXPOSURE_TIME, |
| MediaDetails.INDEX_EXPOSURE_TIME); |
| |
| double data = exif.getAttributeDouble(ExifInterface.TAG_FOCAL_LENGTH, 0); |
| if (data != 0f) { |
| details.addDetail(MediaDetails.INDEX_FOCAL_LENGTH, data); |
| details.setUnit(MediaDetails.INDEX_FOCAL_LENGTH, R.string.unit_mm); |
| } |
| } catch (IOException ex) { |
| // ignore it. |
| Log.w(TAG, "", ex); |
| } |
| } |
| } |