| /* |
| * 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.gallery3d.data.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); |
| } |
| } |