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Diffstat (limited to 'src/com/android/gallery3d/data/DecodeUtils.java')
-rw-r--r-- | src/com/android/gallery3d/data/DecodeUtils.java | 312 |
1 files changed, 0 insertions, 312 deletions
diff --git a/src/com/android/gallery3d/data/DecodeUtils.java b/src/com/android/gallery3d/data/DecodeUtils.java deleted file mode 100644 index fa709157d..000000000 --- a/src/com/android/gallery3d/data/DecodeUtils.java +++ /dev/null @@ -1,312 +0,0 @@ -/* - * 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.annotation.TargetApi; -import android.graphics.Bitmap; -import android.graphics.Bitmap.Config; -import android.graphics.BitmapFactory; -import android.graphics.BitmapFactory.Options; -import android.graphics.BitmapRegionDecoder; -import android.os.Build; -import android.util.FloatMath; - -import com.android.gallery3d.common.ApiHelper; -import com.android.gallery3d.common.BitmapUtils; -import com.android.gallery3d.common.Utils; -import com.android.photos.data.GalleryBitmapPool; -import com.android.gallery3d.ui.Log; -import com.android.gallery3d.util.ThreadPool.CancelListener; -import com.android.gallery3d.util.ThreadPool.JobContext; - -import java.io.FileDescriptor; -import java.io.FileInputStream; -import java.io.InputStream; - -public class DecodeUtils { - private static final String TAG = "DecodeUtils"; - - private static class DecodeCanceller implements CancelListener { - Options mOptions; - - public DecodeCanceller(Options options) { - mOptions = options; - } - - @Override - public void onCancel() { - mOptions.requestCancelDecode(); - } - } - - @TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB) - public static void setOptionsMutable(Options options) { - if (ApiHelper.HAS_OPTIONS_IN_MUTABLE) options.inMutable = true; - } - - public static Bitmap decode(JobContext jc, FileDescriptor fd, Options options) { - if (options == null) options = new Options(); - jc.setCancelListener(new DecodeCanceller(options)); - setOptionsMutable(options); - return ensureGLCompatibleBitmap( - BitmapFactory.decodeFileDescriptor(fd, null, options)); - } - - public static void decodeBounds(JobContext jc, FileDescriptor fd, - Options options) { - Utils.assertTrue(options != null); - options.inJustDecodeBounds = true; - jc.setCancelListener(new DecodeCanceller(options)); - BitmapFactory.decodeFileDescriptor(fd, null, options); - options.inJustDecodeBounds = false; - } - - public static Bitmap decode(JobContext jc, byte[] bytes, Options options) { - return decode(jc, bytes, 0, bytes.length, options); - } - - public static Bitmap decode(JobContext jc, byte[] bytes, int offset, - int length, Options options) { - if (options == null) options = new Options(); - jc.setCancelListener(new DecodeCanceller(options)); - setOptionsMutable(options); - return ensureGLCompatibleBitmap( - BitmapFactory.decodeByteArray(bytes, offset, length, options)); - } - - public static void decodeBounds(JobContext jc, byte[] bytes, int offset, - int length, Options options) { - Utils.assertTrue(options != null); - options.inJustDecodeBounds = true; - jc.setCancelListener(new DecodeCanceller(options)); - BitmapFactory.decodeByteArray(bytes, offset, length, options); - options.inJustDecodeBounds = false; - } - - public static Bitmap decodeThumbnail( - JobContext jc, String filePath, Options options, int targetSize, int type) { - FileInputStream fis = null; - try { - fis = new FileInputStream(filePath); - FileDescriptor fd = fis.getFD(); - return decodeThumbnail(jc, fd, options, targetSize, type); - } catch (Exception ex) { - Log.w(TAG, ex); - return null; - } finally { - Utils.closeSilently(fis); - } - } - - public static Bitmap decodeThumbnail( - JobContext jc, FileDescriptor fd, Options options, int targetSize, int type) { - if (options == null) options = new Options(); - jc.setCancelListener(new DecodeCanceller(options)); - - options.inJustDecodeBounds = true; - BitmapFactory.decodeFileDescriptor(fd, null, options); - if (jc.isCancelled()) return null; - - int w = options.outWidth; - int h = options.outHeight; - - if (type == MediaItem.TYPE_MICROTHUMBNAIL) { - // We center-crop the original image as it's micro thumbnail. In this case, - // we want to make sure the shorter side >= "targetSize". - float scale = (float) targetSize / Math.min(w, h); - options.inSampleSize = BitmapUtils.computeSampleSizeLarger(scale); - - // For an extremely wide image, e.g. 300x30000, we may got OOM when decoding - // it for TYPE_MICROTHUMBNAIL. So we add a max number of pixels limit here. - final int MAX_PIXEL_COUNT = 640000; // 400 x 1600 - if ((w / options.inSampleSize) * (h / options.inSampleSize) > MAX_PIXEL_COUNT) { - options.inSampleSize = BitmapUtils.computeSampleSize( - FloatMath.sqrt((float) MAX_PIXEL_COUNT / (w * h))); - } - } else { - // For screen nail, we only want to keep the longer side >= targetSize. - float scale = (float) targetSize / Math.max(w, h); - options.inSampleSize = BitmapUtils.computeSampleSizeLarger(scale); - } - - options.inJustDecodeBounds = false; - setOptionsMutable(options); - - Bitmap result = BitmapFactory.decodeFileDescriptor(fd, null, options); - if (result == null) return null; - - // We need to resize down if the decoder does not support inSampleSize - // (For example, GIF images) - float scale = (float) targetSize / (type == MediaItem.TYPE_MICROTHUMBNAIL - ? Math.min(result.getWidth(), result.getHeight()) - : Math.max(result.getWidth(), result.getHeight())); - - if (scale <= 0.5) result = BitmapUtils.resizeBitmapByScale(result, scale, true); - return ensureGLCompatibleBitmap(result); - } - - /** - * Decodes the bitmap from the given byte array if the image size is larger than the given - * requirement. - * - * Note: The returned image may be resized down. However, both width and height must be - * larger than the <code>targetSize</code>. - */ - public static Bitmap decodeIfBigEnough(JobContext jc, byte[] data, - Options options, int targetSize) { - if (options == null) options = new Options(); - jc.setCancelListener(new DecodeCanceller(options)); - - options.inJustDecodeBounds = true; - BitmapFactory.decodeByteArray(data, 0, data.length, options); - if (jc.isCancelled()) return null; - if (options.outWidth < targetSize || options.outHeight < targetSize) { - return null; - } - options.inSampleSize = BitmapUtils.computeSampleSizeLarger( - options.outWidth, options.outHeight, targetSize); - options.inJustDecodeBounds = false; - setOptionsMutable(options); - - return ensureGLCompatibleBitmap( - BitmapFactory.decodeByteArray(data, 0, data.length, options)); - } - - // TODO: This function should not be called directly from - // DecodeUtils.requestDecode(...), since we don't have the knowledge - // if the bitmap will be uploaded to GL. - public 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; - } - - public static BitmapRegionDecoder createBitmapRegionDecoder( - JobContext jc, byte[] bytes, int offset, int length, - boolean shareable) { - if (offset < 0 || length <= 0 || offset + length > bytes.length) { - throw new IllegalArgumentException(String.format( - "offset = %s, length = %s, bytes = %s", - offset, length, bytes.length)); - } - - try { - return BitmapRegionDecoder.newInstance( - bytes, offset, length, shareable); - } catch (Throwable t) { - Log.w(TAG, t); - return null; - } - } - - public static BitmapRegionDecoder createBitmapRegionDecoder( - JobContext jc, String filePath, boolean shareable) { - try { - return BitmapRegionDecoder.newInstance(filePath, shareable); - } catch (Throwable t) { - Log.w(TAG, t); - return null; - } - } - - public static BitmapRegionDecoder createBitmapRegionDecoder( - JobContext jc, FileDescriptor fd, boolean shareable) { - try { - return BitmapRegionDecoder.newInstance(fd, shareable); - } catch (Throwable t) { - Log.w(TAG, t); - return null; - } - } - - public static BitmapRegionDecoder createBitmapRegionDecoder( - JobContext jc, InputStream is, boolean shareable) { - try { - return BitmapRegionDecoder.newInstance(is, shareable); - } catch (Throwable t) { - // We often cancel the creating of bitmap region decoder, - // so just log one line. - Log.w(TAG, "requestCreateBitmapRegionDecoder: " + t); - return null; - } - } - - @TargetApi(Build.VERSION_CODES.HONEYCOMB) - public static Bitmap decodeUsingPool(JobContext jc, byte[] data, int offset, - int length, BitmapFactory.Options options) { - if (options == null) options = new BitmapFactory.Options(); - if (options.inSampleSize < 1) options.inSampleSize = 1; - options.inPreferredConfig = Bitmap.Config.ARGB_8888; - options.inBitmap = (options.inSampleSize == 1) - ? findCachedBitmap(jc, data, offset, length, options) : null; - try { - Bitmap bitmap = decode(jc, data, offset, length, options); - if (options.inBitmap != null && options.inBitmap != bitmap) { - GalleryBitmapPool.getInstance().put(options.inBitmap); - options.inBitmap = null; - } - return bitmap; - } catch (IllegalArgumentException e) { - if (options.inBitmap == null) throw e; - - Log.w(TAG, "decode fail with a given bitmap, try decode to a new bitmap"); - GalleryBitmapPool.getInstance().put(options.inBitmap); - options.inBitmap = null; - return decode(jc, data, offset, length, options); - } - } - - // This is the same as the method above except the source data comes - // from a file descriptor instead of a byte array. - @TargetApi(Build.VERSION_CODES.HONEYCOMB) - public static Bitmap decodeUsingPool(JobContext jc, - FileDescriptor fileDescriptor, Options options) { - if (options == null) options = new BitmapFactory.Options(); - if (options.inSampleSize < 1) options.inSampleSize = 1; - options.inPreferredConfig = Bitmap.Config.ARGB_8888; - options.inBitmap = (options.inSampleSize == 1) - ? findCachedBitmap(jc, fileDescriptor, options) : null; - try { - Bitmap bitmap = DecodeUtils.decode(jc, fileDescriptor, options); - if (options.inBitmap != null && options.inBitmap != bitmap) { - GalleryBitmapPool.getInstance().put(options.inBitmap); - options.inBitmap = null; - } - return bitmap; - } catch (IllegalArgumentException e) { - if (options.inBitmap == null) throw e; - - Log.w(TAG, "decode fail with a given bitmap, try decode to a new bitmap"); - GalleryBitmapPool.getInstance().put(options.inBitmap); - options.inBitmap = null; - return decode(jc, fileDescriptor, options); - } - } - - private static Bitmap findCachedBitmap(JobContext jc, byte[] data, - int offset, int length, Options options) { - decodeBounds(jc, data, offset, length, options); - return GalleryBitmapPool.getInstance().get(options.outWidth, options.outHeight); - } - - private static Bitmap findCachedBitmap(JobContext jc, FileDescriptor fileDescriptor, - Options options) { - decodeBounds(jc, fileDescriptor, options); - return GalleryBitmapPool.getInstance().get(options.outWidth, options.outHeight); - } -} |