src/com/android/gallery3d/data/LocalImage.java - platform/packages/apps/Gallery2 - Git at Google

 /*
  * 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.content.ContentResolver;
 import android.content.ContentValues;
 import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.BitmapRegionDecoder;
 import android.media.ExifInterface;
 import android.net.Uri;
 import android.provider.MediaStore.Images;
 import android.provider.MediaStore.Images.ImageColumns;
 import android.util.Log;

 import com.android.gallery3d.app.GalleryApp;
 import com.android.gallery3d.common.BitmapUtils;
 import com.android.gallery3d.util.GalleryUtils;
 import com.android.gallery3d.util.ThreadPool.Job;
 import com.android.gallery3d.util.ThreadPool.JobContext;
 import com.android.gallery3d.util.UpdateHelper;

 import java.io.File;
 import java.io.IOException;

 // LocalImage represents an image in the local storage.
 public class LocalImage extends LocalMediaItem {
     private static final String TAG = "LocalImage";

     static final Path ITEM_PATH = Path.fromString("/local/image/item");

     // Must preserve order between these indices and the order of the terms in
     // the following PROJECTION array.
     private static final int INDEX_ID = 0;
     private static final int INDEX_CAPTION = 1;
     private static final int INDEX_MIME_TYPE = 2;
     private static final int INDEX_LATITUDE = 3;
     private static final int INDEX_LONGITUDE = 4;
     private static final int INDEX_DATE_TAKEN = 5;
     private static final int INDEX_DATE_ADDED = 6;
     private static final int INDEX_DATE_MODIFIED = 7;
     private static final int INDEX_DATA = 8;
     private static final int INDEX_ORIENTATION = 9;
     private static final int INDEX_BUCKET_ID = 10;
     private static final int INDEX_SIZE = 11;
     private static final int INDEX_WIDTH = 12;
     private static final int INDEX_HEIGHT = 13;

     static final String[] PROJECTION =  {
             ImageColumns._ID,           // 0
             ImageColumns.TITLE,         // 1
             ImageColumns.MIME_TYPE,     // 2
             ImageColumns.LATITUDE,      // 3
             ImageColumns.LONGITUDE,     // 4
             ImageColumns.DATE_TAKEN,    // 5
             ImageColumns.DATE_ADDED,    // 6
             ImageColumns.DATE_MODIFIED, // 7
             ImageColumns.DATA,          // 8
             ImageColumns.ORIENTATION,   // 9
             ImageColumns.BUCKET_ID,     // 10
             ImageColumns.SIZE,          // 11
             ImageColumns.WIDTH,         // 12
             ImageColumns.HEIGHT         // 13
     };

     private final GalleryApp mApplication;

     public int rotation;

     public LocalImage(Path path, GalleryApp application, Cursor cursor) {
         super(path, nextVersionNumber());
         mApplication = application;
         loadFromCursor(cursor);
     }

     public LocalImage(Path path, GalleryApp application, int id) {
         super(path, nextVersionNumber());
         mApplication = application;
         ContentResolver resolver = mApplication.getContentResolver();
         Uri uri = Images.Media.EXTERNAL_CONTENT_URI;
         Cursor cursor = LocalAlbum.getItemCursor(resolver, uri, PROJECTION, id);
         if (cursor == null) {
             throw new RuntimeException("cannot get cursor for: " + path);
         }
         try {
             if (cursor.moveToNext()) {
                 loadFromCursor(cursor);
             } else {
                 throw new RuntimeException("cannot find data for: " + path);
             }
         } finally {
             cursor.close();
         }
     }

     private void loadFromCursor(Cursor cursor) {
         id = cursor.getInt(INDEX_ID);
         caption = cursor.getString(INDEX_CAPTION);
         mimeType = cursor.getString(INDEX_MIME_TYPE);
         latitude = cursor.getDouble(INDEX_LATITUDE);
         longitude = cursor.getDouble(INDEX_LONGITUDE);
         dateTakenInMs = cursor.getLong(INDEX_DATE_TAKEN);
         filePath = cursor.getString(INDEX_DATA);
         rotation = cursor.getInt(INDEX_ORIENTATION);
         bucketId = cursor.getInt(INDEX_BUCKET_ID);
         fileSize = cursor.getLong(INDEX_SIZE);
         width = cursor.getInt(INDEX_WIDTH);
         height = cursor.getInt(INDEX_HEIGHT);
     }

     @Override
     protected boolean updateFromCursor(Cursor cursor) {
         UpdateHelper uh = new UpdateHelper();
         id = uh.update(id, cursor.getInt(INDEX_ID));
         caption = uh.update(caption, cursor.getString(INDEX_CAPTION));
         mimeType = uh.update(mimeType, cursor.getString(INDEX_MIME_TYPE));
         latitude = uh.update(latitude, cursor.getDouble(INDEX_LATITUDE));
         longitude = uh.update(longitude, cursor.getDouble(INDEX_LONGITUDE));
         dateTakenInMs = uh.update(
                 dateTakenInMs, cursor.getLong(INDEX_DATE_TAKEN));
         dateAddedInSec = uh.update(
                 dateAddedInSec, cursor.getLong(INDEX_DATE_ADDED));
         dateModifiedInSec = uh.update(
                 dateModifiedInSec, cursor.getLong(INDEX_DATE_MODIFIED));
         filePath = uh.update(filePath, cursor.getString(INDEX_DATA));
         rotation = uh.update(rotation, cursor.getInt(INDEX_ORIENTATION));
         bucketId = uh.update(bucketId, cursor.getInt(INDEX_BUCKET_ID));
         fileSize = uh.update(fileSize, cursor.getLong(INDEX_SIZE));
         width = uh.update(width, cursor.getInt(INDEX_WIDTH));
         height = uh.update(height, cursor.getInt(INDEX_HEIGHT));
         return uh.isUpdated();
     }

     @Override
     public Job<Bitmap> requestImage(int type) {
         return new LocalImageRequest(mApplication, mPath, type, filePath);
     }

     public static class LocalImageRequest extends ImageCacheRequest {
         private String mLocalFilePath;

         LocalImageRequest(GalleryApp application, Path path, int type,
                 String localFilePath) {
             super(application, path, type, MediaItem.getTargetSize(type));
             mLocalFilePath = localFilePath;
         }

         @Override
         public Bitmap onDecodeOriginal(JobContext jc, final int type) {
             BitmapFactory.Options options = new BitmapFactory.Options();
             options.inPreferredConfig = Bitmap.Config.ARGB_8888;
             int targetSize = MediaItem.getTargetSize(type);

             // try to decode from JPEG EXIF
             if (type == MediaItem.TYPE_MICROTHUMBNAIL) {
                 ExifInterface exif = null;
                 byte [] thumbData = null;
                 try {
                     exif = new ExifInterface(mLocalFilePath);
                     if (exif != null) {
                         thumbData = exif.getThumbnail();
                     }
                 } catch (Throwable t) {
                     Log.w(TAG, "fail to get exif thumb", t);
                 }
                 if (thumbData != null) {
                     Bitmap bitmap = DecodeUtils.decodeIfBigEnough(
                             jc, thumbData, options, targetSize);
                     if (bitmap != null) return bitmap;
                 }
             }

             return DecodeUtils.decodeThumbnail(jc, mLocalFilePath, options, targetSize, type);
         }
     }

     @Override
     public Job<BitmapRegionDecoder> requestLargeImage() {
         return new LocalLargeImageRequest(filePath);
     }

     public static class LocalLargeImageRequest
             implements Job<BitmapRegionDecoder> {
         String mLocalFilePath;

         public LocalLargeImageRequest(String localFilePath) {
             mLocalFilePath = localFilePath;
         }

         public BitmapRegionDecoder run(JobContext jc) {
             return DecodeUtils.createBitmapRegionDecoder(jc, mLocalFilePath, false);
         }
     }

     @Override
     public int getSupportedOperations() {
         int operation = SUPPORT_DELETE | SUPPORT_SHARE | SUPPORT_CROP
                 | SUPPORT_SETAS | SUPPORT_EDIT | SUPPORT_INFO;
         if (BitmapUtils.isSupportedByRegionDecoder(mimeType)) {
             operation |= SUPPORT_FULL_IMAGE;
         }

         if (BitmapUtils.isRotationSupported(mimeType)) {
             operation |= SUPPORT_ROTATE;
         }

         if (GalleryUtils.isValidLocation(latitude, longitude)) {
             operation |= SUPPORT_SHOW_ON_MAP;
         }
         return operation;
     }

     @Override
     public void delete() {
         GalleryUtils.assertNotInRenderThread();
         Uri baseUri = Images.Media.EXTERNAL_CONTENT_URI;
         mApplication.getContentResolver().delete(baseUri, "_id=?",
                 new String[]{String.valueOf(id)});
         mApplication.getDataManager().broadcastLocalDeletion();
     }

     private static String getExifOrientation(int orientation) {
         switch (orientation) {
             case 0:
                 return String.valueOf(ExifInterface.ORIENTATION_NORMAL);
             case 90:
                 return String.valueOf(ExifInterface.ORIENTATION_ROTATE_90);
             case 180:
                 return String.valueOf(ExifInterface.ORIENTATION_ROTATE_180);
             case 270:
                 return String.valueOf(ExifInterface.ORIENTATION_ROTATE_270);
             default:
                 throw new AssertionError("invalid: " + orientation);
         }
     }

     @Override
     public void rotate(int degrees) {
         GalleryUtils.assertNotInRenderThread();
         Uri baseUri = Images.Media.EXTERNAL_CONTENT_URI;
         ContentValues values = new ContentValues();
         int rotation = (this.rotation + degrees) % 360;
         if (rotation < 0) rotation += 360;

         if (mimeType.equalsIgnoreCase("image/jpeg")) {
             try {
                 ExifInterface exif = new ExifInterface(filePath);
                 exif.setAttribute(ExifInterface.TAG_ORIENTATION,
                         getExifOrientation(rotation));
                 exif.saveAttributes();
             } catch (IOException e) {
                 Log.w(TAG, "cannot set exif data: " + filePath);
             }

             // We need to update the filesize as well
             fileSize = new File(filePath).length();
             values.put(Images.Media.SIZE, fileSize);
         }

         values.put(Images.Media.ORIENTATION, rotation);
         mApplication.getContentResolver().update(baseUri, values, "_id=?",
                 new String[]{String.valueOf(id)});
     }

     @Override
     public Uri getContentUri() {
         Uri baseUri = Images.Media.EXTERNAL_CONTENT_URI;
         return baseUri.buildUpon().appendPath(String.valueOf(id)).build();
     }

     @Override
     public int getMediaType() {
         return MEDIA_TYPE_IMAGE;
     }

     @Override
     public MediaDetails getDetails() {
         MediaDetails details = super.getDetails();
         details.addDetail(MediaDetails.INDEX_ORIENTATION, Integer.valueOf(rotation));
         MediaDetails.extractExifInfo(details, filePath);
         return details;
     }

     @Override
     public int getRotation() {
         return rotation;
     }

     @Override
     public int getWidth() {
         return width;
     }

     @Override
     public int getHeight() {
         return height;
     }
 }
	/*
	* 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.content.ContentResolver;
	import android.content.ContentValues;
	import android.database.Cursor;
	import android.graphics.Bitmap;
	import android.graphics.BitmapFactory;
	import android.graphics.BitmapRegionDecoder;
	import android.media.ExifInterface;
	import android.net.Uri;
	import android.provider.MediaStore.Images;
	import android.provider.MediaStore.Images.ImageColumns;
	import android.util.Log;

	import com.android.gallery3d.app.GalleryApp;
	import com.android.gallery3d.common.BitmapUtils;
	import com.android.gallery3d.util.GalleryUtils;
	import com.android.gallery3d.util.ThreadPool.Job;
	import com.android.gallery3d.util.ThreadPool.JobContext;
	import com.android.gallery3d.util.UpdateHelper;

	import java.io.File;
	import java.io.IOException;

	// LocalImage represents an image in the local storage.
	public class LocalImage extends LocalMediaItem {
	private static final String TAG = "LocalImage";

	static final Path ITEM_PATH = Path.fromString("/local/image/item");

	// Must preserve order between these indices and the order of the terms in
	// the following PROJECTION array.
	private static final int INDEX_ID = 0;
	private static final int INDEX_CAPTION = 1;
	private static final int INDEX_MIME_TYPE = 2;
	private static final int INDEX_LATITUDE = 3;
	private static final int INDEX_LONGITUDE = 4;
	private static final int INDEX_DATE_TAKEN = 5;
	private static final int INDEX_DATE_ADDED = 6;
	private static final int INDEX_DATE_MODIFIED = 7;
	private static final int INDEX_DATA = 8;
	private static final int INDEX_ORIENTATION = 9;
	private static final int INDEX_BUCKET_ID = 10;
	private static final int INDEX_SIZE = 11;
	private static final int INDEX_WIDTH = 12;
	private static final int INDEX_HEIGHT = 13;

	static final String[] PROJECTION = {
	ImageColumns._ID, // 0
	ImageColumns.TITLE, // 1
	ImageColumns.MIME_TYPE, // 2
	ImageColumns.LATITUDE, // 3
	ImageColumns.LONGITUDE, // 4
	ImageColumns.DATE_TAKEN, // 5
	ImageColumns.DATE_ADDED, // 6
	ImageColumns.DATE_MODIFIED, // 7
	ImageColumns.DATA, // 8
	ImageColumns.ORIENTATION, // 9
	ImageColumns.BUCKET_ID, // 10
	ImageColumns.SIZE, // 11
	ImageColumns.WIDTH, // 12
	ImageColumns.HEIGHT // 13
	};

	private final GalleryApp mApplication;

	public int rotation;

	public LocalImage(Path path, GalleryApp application, Cursor cursor) {
	super(path, nextVersionNumber());
	mApplication = application;
	loadFromCursor(cursor);
	}

	public LocalImage(Path path, GalleryApp application, int id) {
	super(path, nextVersionNumber());
	mApplication = application;
	ContentResolver resolver = mApplication.getContentResolver();
	Uri uri = Images.Media.EXTERNAL_CONTENT_URI;
	Cursor cursor = LocalAlbum.getItemCursor(resolver, uri, PROJECTION, id);
	if (cursor == null) {
	throw new RuntimeException("cannot get cursor for: " + path);
	}
	try {
	if (cursor.moveToNext()) {
	loadFromCursor(cursor);
	} else {
	throw new RuntimeException("cannot find data for: " + path);
	}
	} finally {
	cursor.close();
	}
	}

	private void loadFromCursor(Cursor cursor) {
	id = cursor.getInt(INDEX_ID);
	caption = cursor.getString(INDEX_CAPTION);
	mimeType = cursor.getString(INDEX_MIME_TYPE);
	latitude = cursor.getDouble(INDEX_LATITUDE);
	longitude = cursor.getDouble(INDEX_LONGITUDE);
	dateTakenInMs = cursor.getLong(INDEX_DATE_TAKEN);
	filePath = cursor.getString(INDEX_DATA);
	rotation = cursor.getInt(INDEX_ORIENTATION);
	bucketId = cursor.getInt(INDEX_BUCKET_ID);
	fileSize = cursor.getLong(INDEX_SIZE);
	width = cursor.getInt(INDEX_WIDTH);
	height = cursor.getInt(INDEX_HEIGHT);
	}

	@Override
	protected boolean updateFromCursor(Cursor cursor) {
	UpdateHelper uh = new UpdateHelper();
	id = uh.update(id, cursor.getInt(INDEX_ID));
	caption = uh.update(caption, cursor.getString(INDEX_CAPTION));
	mimeType = uh.update(mimeType, cursor.getString(INDEX_MIME_TYPE));
	latitude = uh.update(latitude, cursor.getDouble(INDEX_LATITUDE));
	longitude = uh.update(longitude, cursor.getDouble(INDEX_LONGITUDE));
	dateTakenInMs = uh.update(
	dateTakenInMs, cursor.getLong(INDEX_DATE_TAKEN));
	dateAddedInSec = uh.update(
	dateAddedInSec, cursor.getLong(INDEX_DATE_ADDED));
	dateModifiedInSec = uh.update(
	dateModifiedInSec, cursor.getLong(INDEX_DATE_MODIFIED));
	filePath = uh.update(filePath, cursor.getString(INDEX_DATA));
	rotation = uh.update(rotation, cursor.getInt(INDEX_ORIENTATION));
	bucketId = uh.update(bucketId, cursor.getInt(INDEX_BUCKET_ID));
	fileSize = uh.update(fileSize, cursor.getLong(INDEX_SIZE));
	width = uh.update(width, cursor.getInt(INDEX_WIDTH));
	height = uh.update(height, cursor.getInt(INDEX_HEIGHT));
	return uh.isUpdated();
	}

	@Override
	public Job<Bitmap> requestImage(int type) {
	return new LocalImageRequest(mApplication, mPath, type, filePath);
	}

	public static class LocalImageRequest extends ImageCacheRequest {
	private String mLocalFilePath;

	LocalImageRequest(GalleryApp application, Path path, int type,
	String localFilePath) {
	super(application, path, type, MediaItem.getTargetSize(type));
	mLocalFilePath = localFilePath;
	}

	@Override
	public Bitmap onDecodeOriginal(JobContext jc, final int type) {
	BitmapFactory.Options options = new BitmapFactory.Options();
	options.inPreferredConfig = Bitmap.Config.ARGB_8888;
	int targetSize = MediaItem.getTargetSize(type);

	// try to decode from JPEG EXIF
	if (type == MediaItem.TYPE_MICROTHUMBNAIL) {
	ExifInterface exif = null;
	byte [] thumbData = null;
	try {
	exif = new ExifInterface(mLocalFilePath);
	if (exif != null) {
	thumbData = exif.getThumbnail();
	}
	} catch (Throwable t) {
	Log.w(TAG, "fail to get exif thumb", t);
	}
	if (thumbData != null) {
	Bitmap bitmap = DecodeUtils.decodeIfBigEnough(
	jc, thumbData, options, targetSize);
	if (bitmap != null) return bitmap;
	}
	}

	return DecodeUtils.decodeThumbnail(jc, mLocalFilePath, options, targetSize, type);
	}
	}

	@Override
	public Job<BitmapRegionDecoder> requestLargeImage() {
	return new LocalLargeImageRequest(filePath);
	}

	public static class LocalLargeImageRequest
	implements Job<BitmapRegionDecoder> {
	String mLocalFilePath;

	public LocalLargeImageRequest(String localFilePath) {
	mLocalFilePath = localFilePath;
	}

	public BitmapRegionDecoder run(JobContext jc) {
	return DecodeUtils.createBitmapRegionDecoder(jc, mLocalFilePath, false);
	}
	}

	@Override
	public int getSupportedOperations() {
	int operation = SUPPORT_DELETE \| SUPPORT_SHARE \| SUPPORT_CROP
	\| SUPPORT_SETAS \| SUPPORT_EDIT \| SUPPORT_INFO;
	if (BitmapUtils.isSupportedByRegionDecoder(mimeType)) {
	operation \|= SUPPORT_FULL_IMAGE;
	}

	if (BitmapUtils.isRotationSupported(mimeType)) {
	operation \|= SUPPORT_ROTATE;
	}

	if (GalleryUtils.isValidLocation(latitude, longitude)) {
	operation \|= SUPPORT_SHOW_ON_MAP;
	}
	return operation;
	}

	@Override
	public void delete() {
	GalleryUtils.assertNotInRenderThread();
	Uri baseUri = Images.Media.EXTERNAL_CONTENT_URI;
	mApplication.getContentResolver().delete(baseUri, "_id=?",
	new String[]{String.valueOf(id)});
	mApplication.getDataManager().broadcastLocalDeletion();
	}

	private static String getExifOrientation(int orientation) {
	switch (orientation) {
	case 0:
	return String.valueOf(ExifInterface.ORIENTATION_NORMAL);
	case 90:
	return String.valueOf(ExifInterface.ORIENTATION_ROTATE_90);
	case 180:
	return String.valueOf(ExifInterface.ORIENTATION_ROTATE_180);
	case 270:
	return String.valueOf(ExifInterface.ORIENTATION_ROTATE_270);
	default:
	throw new AssertionError("invalid: " + orientation);
	}
	}

	@Override
	public void rotate(int degrees) {
	GalleryUtils.assertNotInRenderThread();
	Uri baseUri = Images.Media.EXTERNAL_CONTENT_URI;
	ContentValues values = new ContentValues();
	int rotation = (this.rotation + degrees) % 360;
	if (rotation < 0) rotation += 360;

	if (mimeType.equalsIgnoreCase("image/jpeg")) {
	try {
	ExifInterface exif = new ExifInterface(filePath);
	exif.setAttribute(ExifInterface.TAG_ORIENTATION,
	getExifOrientation(rotation));
	exif.saveAttributes();
	} catch (IOException e) {
	Log.w(TAG, "cannot set exif data: " + filePath);
	}

	// We need to update the filesize as well
	fileSize = new File(filePath).length();
	values.put(Images.Media.SIZE, fileSize);
	}

	values.put(Images.Media.ORIENTATION, rotation);
	mApplication.getContentResolver().update(baseUri, values, "_id=?",
	new String[]{String.valueOf(id)});
	}

	@Override
	public Uri getContentUri() {
	Uri baseUri = Images.Media.EXTERNAL_CONTENT_URI;
	return baseUri.buildUpon().appendPath(String.valueOf(id)).build();
	}

	@Override
	public int getMediaType() {
	return MEDIA_TYPE_IMAGE;
	}

	@Override
	public MediaDetails getDetails() {
	MediaDetails details = super.getDetails();
	details.addDetail(MediaDetails.INDEX_ORIENTATION, Integer.valueOf(rotation));
	MediaDetails.extractExifInfo(details, filePath);
	return details;
	}

	@Override
	public int getRotation() {
	return rotation;
	}

	@Override
	public int getWidth() {
	return width;
	}

	@Override
	public int getHeight() {
	return height;
	}
	}