1 /* 2 * Copyright (C) 2013 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.filtershow.pipeline; 18 19 import android.graphics.Bitmap; 20 import android.graphics.Canvas; 21 import android.renderscript.Allocation; 22 import android.renderscript.RenderScript; 23 import android.util.Log; 24 import com.android.gallery3d.filtershow.cache.BitmapCache; 25 import com.android.gallery3d.filtershow.imageshow.PrimaryImage; 26 27 public class Buffer { 28 private static final String LOGTAG = "Buffer"; 29 private Bitmap mBitmap; 30 private Allocation mAllocation; 31 private boolean mUseAllocation = false; 32 private ImagePreset mPreset; 33 Buffer(Bitmap bitmap)34 public Buffer(Bitmap bitmap) { 35 RenderScript rs = CachingPipeline.getRenderScriptContext(); 36 if (bitmap != null) { 37 BitmapCache cache = PrimaryImage.getImage().getBitmapCache(); 38 mBitmap = cache.getBitmapCopy(bitmap, BitmapCache.PREVIEW_CACHE); 39 } 40 if (mUseAllocation) { 41 // TODO: recreate the allocation when the RS context changes 42 mAllocation = Allocation.createFromBitmap(rs, mBitmap, 43 Allocation.MipmapControl.MIPMAP_NONE, 44 Allocation.USAGE_SHARED | Allocation.USAGE_SCRIPT); 45 } 46 } 47 isSameSize(Bitmap bitmap)48 public boolean isSameSize(Bitmap bitmap) { 49 if (mBitmap == null || bitmap == null) { 50 return false; 51 } 52 if (mBitmap.getWidth() == bitmap.getWidth() 53 && mBitmap.getHeight() == bitmap.getHeight()) { 54 return true; 55 } 56 return false; 57 } 58 useBitmap(Bitmap bitmap)59 public synchronized void useBitmap(Bitmap bitmap) { 60 Canvas canvas = new Canvas(mBitmap); 61 canvas.drawBitmap(bitmap, 0, 0, null); 62 } 63 getBitmap()64 public synchronized Bitmap getBitmap() { 65 return mBitmap; 66 } 67 getAllocation()68 public Allocation getAllocation() { 69 return mAllocation; 70 } 71 sync()72 public void sync() { 73 if (mUseAllocation) { 74 mAllocation.copyTo(mBitmap); 75 } 76 } 77 getPreset()78 public ImagePreset getPreset() { 79 return mPreset; 80 } 81 setPreset(ImagePreset preset)82 public void setPreset(ImagePreset preset) { 83 if ((mPreset == null) || (!mPreset.same(preset))) { 84 mPreset = new ImagePreset(preset); 85 } else { 86 mPreset.updateWith(preset); 87 } 88 } 89 remove()90 public void remove() { 91 BitmapCache cache = PrimaryImage.getImage().getBitmapCache(); 92 if (cache.cache(mBitmap)) { 93 mBitmap = null; 94 } 95 } 96 } 97