diff options
Diffstat (limited to 'src/com/android/gallery3d/ingest/data/MtpBitmapFetch.java')
-rw-r--r-- | src/com/android/gallery3d/ingest/data/MtpBitmapFetch.java | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/ingest/data/MtpBitmapFetch.java b/src/com/android/gallery3d/ingest/data/MtpBitmapFetch.java new file mode 100644 index 000000000..30868c22b --- /dev/null +++ b/src/com/android/gallery3d/ingest/data/MtpBitmapFetch.java @@ -0,0 +1,106 @@ +/* + * Copyright (C) 2013 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.ingest.data; + +import android.content.Context; +import android.graphics.Bitmap; +import android.graphics.BitmapFactory; +import android.mtp.MtpDevice; +import android.mtp.MtpObjectInfo; +import android.util.DisplayMetrics; +import android.view.WindowManager; + +import com.android.camera.Exif; +import com.android.photos.data.GalleryBitmapPool; + +public class MtpBitmapFetch { + private static int sMaxSize = 0; + + public static void recycleThumbnail(Bitmap b) { + if (b != null) { + GalleryBitmapPool.getInstance().put(b); + } + } + + public static Bitmap getThumbnail(MtpDevice device, MtpObjectInfo info) { + byte[] imageBytes = device.getThumbnail(info.getObjectHandle()); + if (imageBytes == null) { + return null; + } + BitmapFactory.Options o = new BitmapFactory.Options(); + o.inJustDecodeBounds = true; + BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length, o); + if (o.outWidth == 0 || o.outHeight == 0) { + return null; + } + o.inBitmap = GalleryBitmapPool.getInstance().get(o.outWidth, o.outHeight); + o.inMutable = true; + o.inJustDecodeBounds = false; + o.inSampleSize = 1; + try { + return BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length, o); + } catch (IllegalArgumentException e) { + // BitmapFactory throws an exception rather than returning null + // when image decoding fails and an existing bitmap was supplied + // for recycling, even if the failure was not caused by the use + // of that bitmap. + return BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length); + } + } + + public static BitmapWithMetadata getFullsize(MtpDevice device, MtpObjectInfo info) { + return getFullsize(device, info, sMaxSize); + } + + public static BitmapWithMetadata getFullsize(MtpDevice device, MtpObjectInfo info, int maxSide) { + byte[] imageBytes = device.getObject(info.getObjectHandle(), info.getCompressedSize()); + if (imageBytes == null) { + return null; + } + Bitmap created; + if (maxSide > 0) { + BitmapFactory.Options o = new BitmapFactory.Options(); + o.inJustDecodeBounds = true; + BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length, o); + int w = o.outWidth; + int h = o.outHeight; + int comp = Math.max(h, w); + int sampleSize = 1; + while ((comp >> 1) >= maxSide) { + comp = comp >> 1; + sampleSize++; + } + o.inSampleSize = sampleSize; + o.inJustDecodeBounds = false; + created = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length, o); + } else { + created = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length); + } + if (created == null) { + return null; + } + + return new BitmapWithMetadata(created, Exif.getOrientation(imageBytes)); + } + + public static void configureForContext(Context context) { + DisplayMetrics metrics = new DisplayMetrics(); + WindowManager wm = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE); + wm.getDefaultDisplay().getMetrics(metrics); + sMaxSize = Math.max(metrics.heightPixels, metrics.widthPixels); + } +} |