1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.gallery3d.data; 18 19 import com.android.gallery3d.app.GalleryApp; 20 import com.android.gallery3d.common.BitmapUtils; 21 import com.android.gallery3d.util.GalleryUtils; 22 import com.android.gallery3d.util.ThreadPool.Job; 23 import com.android.gallery3d.util.ThreadPool.JobContext; 24 import com.android.gallery3d.util.UpdateHelper; 25 26 import android.content.ContentResolver; 27 import android.content.ContentValues; 28 import android.database.Cursor; 29 import android.graphics.Bitmap; 30 import android.graphics.BitmapFactory; 31 import android.graphics.BitmapRegionDecoder; 32 import android.media.ExifInterface; 33 import android.net.Uri; 34 import android.provider.MediaStore.Images; 35 import android.provider.MediaStore.Images.ImageColumns; 36 import android.util.Log; 37 38 import java.io.File; 39 import java.io.IOException; 40 41 // LocalImage represents an image in the local storage. 42 public class LocalImage extends LocalMediaItem { 43 private static final int THUMBNAIL_TARGET_SIZE = 640; 44 private static final int MICROTHUMBNAIL_TARGET_SIZE = 200; 45 46 private static final String TAG = "LocalImage"; 47 48 static final Path ITEM_PATH = Path.fromString("/local/image/item"); 49 50 // Must preserve order between these indices and the order of the terms in 51 // the following PROJECTION array. 52 private static final int INDEX_ID = 0; 53 private static final int INDEX_CAPTION = 1; 54 private static final int INDEX_MIME_TYPE = 2; 55 private static final int INDEX_LATITUDE = 3; 56 private static final int INDEX_LONGITUDE = 4; 57 private static final int INDEX_DATE_TAKEN = 5; 58 private static final int INDEX_DATE_ADDED = 6; 59 private static final int INDEX_DATE_MODIFIED = 7; 60 private static final int INDEX_DATA = 8; 61 private static final int INDEX_ORIENTATION = 9; 62 private static final int INDEX_BUCKET_ID = 10; 63 private static final int INDEX_SIZE_ID = 11; 64 private static final int INDEX_WIDTH = 12; 65 private static final int INDEX_HEIGHT = 13; 66 67 static final String[] PROJECTION = { 68 ImageColumns._ID, // 0 69 ImageColumns.TITLE, // 1 70 ImageColumns.MIME_TYPE, // 2 71 ImageColumns.LATITUDE, // 3 72 ImageColumns.LONGITUDE, // 4 73 ImageColumns.DATE_TAKEN, // 5 74 ImageColumns.DATE_ADDED, // 6 75 ImageColumns.DATE_MODIFIED, // 7 76 ImageColumns.DATA, // 8 77 ImageColumns.ORIENTATION, // 9 78 ImageColumns.BUCKET_ID, // 10 79 ImageColumns.SIZE, // 11 80 // These should be changed to proper names after they are made public. 81 "width", // ImageColumns.WIDTH, // 12 82 "height", // ImageColumns.HEIGHT // 13 83 }; 84 85 private final GalleryApp mApplication; 86 87 public int rotation; 88 public int width; 89 public int height; 90 91 public LocalImage(Path path, GalleryApp application, Cursor cursor) { 92 super(path, nextVersionNumber()); 93 mApplication = application; 94 loadFromCursor(cursor); 95 } 96 97 public LocalImage(Path path, GalleryApp application, int id) { 98 super(path, nextVersionNumber()); 99 mApplication = application; 100 ContentResolver resolver = mApplication.getContentResolver(); 101 Uri uri = Images.Media.EXTERNAL_CONTENT_URI; 102 Cursor cursor = LocalAlbum.getItemCursor(resolver, uri, PROJECTION, id); 103 if (cursor == null) { 104 throw new RuntimeException("cannot get cursor for: " + path); 105 } 106 try { 107 if (cursor.moveToNext()) { 108 loadFromCursor(cursor); 109 } else { 110 throw new RuntimeException("cannot find data for: " + path); 111 } 112 } finally { 113 cursor.close(); 114 } 115 } 116 117 private void loadFromCursor(Cursor cursor) { 118 id = cursor.getInt(INDEX_ID); 119 caption = cursor.getString(INDEX_CAPTION); 120 mimeType = cursor.getString(INDEX_MIME_TYPE); 121 latitude = cursor.getDouble(INDEX_LATITUDE); 122 longitude = cursor.getDouble(INDEX_LONGITUDE); 123 dateTakenInMs = cursor.getLong(INDEX_DATE_TAKEN); 124 filePath = cursor.getString(INDEX_DATA); 125 rotation = cursor.getInt(INDEX_ORIENTATION); 126 bucketId = cursor.getInt(INDEX_BUCKET_ID); 127 fileSize = cursor.getLong(INDEX_SIZE_ID); 128 width = cursor.getInt(INDEX_WIDTH); 129 height = cursor.getInt(INDEX_HEIGHT); 130 } 131 132 @Override 133 protected boolean updateFromCursor(Cursor cursor) { 134 UpdateHelper uh = new UpdateHelper(); 135 id = uh.update(id, cursor.getInt(INDEX_ID)); 136 caption = uh.update(caption, cursor.getString(INDEX_CAPTION)); 137 mimeType = uh.update(mimeType, cursor.getString(INDEX_MIME_TYPE)); 138 latitude = uh.update(latitude, cursor.getDouble(INDEX_LATITUDE)); 139 longitude = uh.update(longitude, cursor.getDouble(INDEX_LONGITUDE)); 140 dateTakenInMs = uh.update( 141 dateTakenInMs, cursor.getLong(INDEX_DATE_TAKEN)); 142 dateAddedInSec = uh.update( 143 dateAddedInSec, cursor.getLong(INDEX_DATE_ADDED)); 144 dateModifiedInSec = uh.update( 145 dateModifiedInSec, cursor.getLong(INDEX_DATE_MODIFIED)); 146 filePath = uh.update(filePath, cursor.getString(INDEX_DATA)); 147 rotation = uh.update(rotation, cursor.getInt(INDEX_ORIENTATION)); 148 bucketId = uh.update(bucketId, cursor.getInt(INDEX_BUCKET_ID)); 149 fileSize = uh.update(fileSize, cursor.getLong(INDEX_SIZE_ID)); 150 width = uh.update(width, cursor.getInt(INDEX_WIDTH)); 151 height = uh.update(height, cursor.getInt(INDEX_HEIGHT)); 152 return uh.isUpdated(); 153 } 154 155 @Override 156 public Job<Bitmap> requestImage(int type) { 157 return new LocalImageRequest(mApplication, mPath, type, filePath); 158 } 159 160 public static class LocalImageRequest extends ImageCacheRequest { 161 private String mLocalFilePath; 162 163 LocalImageRequest(GalleryApp application, Path path, int type, 164 String localFilePath) { 165 super(application, path, type, getTargetSize(type)); 166 mLocalFilePath = localFilePath; 167 } 168 169 @Override 170 public Bitmap onDecodeOriginal(JobContext jc, int type) { 171 BitmapFactory.Options options = new BitmapFactory.Options(); 172 options.inPreferredConfig = Bitmap.Config.ARGB_8888; 173 174 // try to decode from JPEG EXIF 175 if (type == MediaItem.TYPE_MICROTHUMBNAIL) { 176 ExifInterface exif = null; 177 byte [] thumbData = null; 178 try { 179 exif = new ExifInterface(mLocalFilePath); 180 if (exif != null) { 181 thumbData = exif.getThumbnail(); 182 } 183 } catch (Throwable t) { 184 Log.w(TAG, "fail to get exif thumb", t); 185 } 186 if (thumbData != null) { 187 Bitmap bitmap = DecodeUtils.requestDecodeIfBigEnough( 188 jc, thumbData, options, getTargetSize(type)); 189 if (bitmap != null) return bitmap; 190 } 191 } 192 return DecodeUtils.requestDecode( 193 jc, mLocalFilePath, options, getTargetSize(type)); 194 } 195 } 196 197 static int getTargetSize(int type) { 198 switch (type) { 199 case TYPE_THUMBNAIL: 200 return THUMBNAIL_TARGET_SIZE; 201 case TYPE_MICROTHUMBNAIL: 202 return MICROTHUMBNAIL_TARGET_SIZE; 203 default: 204 throw new RuntimeException( 205 "should only request thumb/microthumb from cache"); 206 } 207 } 208 209 @Override 210 public Job<BitmapRegionDecoder> requestLargeImage() { 211 return new LocalLargeImageRequest(filePath); 212 } 213 214 public static class LocalLargeImageRequest 215 implements Job<BitmapRegionDecoder> { 216 String mLocalFilePath; 217 218 public LocalLargeImageRequest(String localFilePath) { 219 mLocalFilePath = localFilePath; 220 } 221 222 public BitmapRegionDecoder run(JobContext jc) { 223 return DecodeUtils.requestCreateBitmapRegionDecoder( 224 jc, mLocalFilePath, false); 225 } 226 } 227 228 @Override 229 public int getSupportedOperations() { 230 int operation = SUPPORT_DELETE | SUPPORT_SHARE | SUPPORT_CROP 231 | SUPPORT_SETAS | SUPPORT_EDIT | SUPPORT_INFO; 232 if (BitmapUtils.isSupportedByRegionDecoder(mimeType)) { 233 operation |= SUPPORT_FULL_IMAGE; 234 } 235 236 if (BitmapUtils.isRotationSupported(mimeType)) { 237 operation |= SUPPORT_ROTATE; 238 } 239 240 if (GalleryUtils.isValidLocation(latitude, longitude)) { 241 operation |= SUPPORT_SHOW_ON_MAP; 242 } 243 return operation; 244 } 245 246 @Override 247 public void delete() { 248 GalleryUtils.assertNotInRenderThread(); 249 Uri baseUri = Images.Media.EXTERNAL_CONTENT_URI; 250 mApplication.getContentResolver().delete(baseUri, "_id=?", 251 new String[]{String.valueOf(id)}); 252 } 253 254 private static String getExifOrientation(int orientation) { 255 switch (orientation) { 256 case 0: 257 return String.valueOf(ExifInterface.ORIENTATION_NORMAL); 258 case 90: 259 return String.valueOf(ExifInterface.ORIENTATION_ROTATE_90); 260 case 180: 261 return String.valueOf(ExifInterface.ORIENTATION_ROTATE_180); 262 case 270: 263 return String.valueOf(ExifInterface.ORIENTATION_ROTATE_270); 264 default: 265 throw new AssertionError("invalid: " + orientation); 266 } 267 } 268 269 @Override 270 public void rotate(int degrees) { 271 GalleryUtils.assertNotInRenderThread(); 272 Uri baseUri = Images.Media.EXTERNAL_CONTENT_URI; 273 ContentValues values = new ContentValues(); 274 int rotation = (this.rotation + degrees) % 360; 275 if (rotation < 0) rotation += 360; 276 277 if (mimeType.equalsIgnoreCase("image/jpeg")) { 278 try { 279 ExifInterface exif = new ExifInterface(filePath); 280 exif.setAttribute(ExifInterface.TAG_ORIENTATION, 281 getExifOrientation(rotation)); 282 exif.saveAttributes(); 283 } catch (IOException e) { 284 Log.w(TAG, "cannot set exif data: " + filePath); 285 } 286 287 // We need to update the filesize as well 288 fileSize = new File(filePath).length(); 289 values.put(Images.Media.SIZE, fileSize); 290 } 291 292 values.put(Images.Media.ORIENTATION, rotation); 293 mApplication.getContentResolver().update(baseUri, values, "_id=?", 294 new String[]{String.valueOf(id)}); 295 } 296 297 @Override 298 public Uri getContentUri() { 299 Uri baseUri = Images.Media.EXTERNAL_CONTENT_URI; 300 return baseUri.buildUpon().appendPath(String.valueOf(id)).build(); 301 } 302 303 @Override 304 public int getMediaType() { 305 return MEDIA_TYPE_IMAGE; 306 } 307 308 @Override 309 public MediaDetails getDetails() { 310 MediaDetails details = super.getDetails(); 311 details.addDetail(MediaDetails.INDEX_ORIENTATION, Integer.valueOf(rotation)); 312 MediaDetails.extractExifInfo(details, filePath); 313 return details; 314 } 315 316 @Override 317 public int getRotation() { 318 return rotation; 319 } 320 321 @Override 322 public int getWidth() { 323 return width; 324 } 325 326 @Override 327 public int getHeight() { 328 return height; 329 } 330 } 331
