| /* |
| * Copyright (C) 2012 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.filtershow.filters; |
| |
| import android.graphics.Bitmap; |
| import android.graphics.BitmapFactory; |
| import android.support.v8.renderscript.*; |
| import android.util.Log; |
| import android.content.res.Resources; |
| import com.android.gallery3d.R; |
| import com.android.gallery3d.filtershow.cache.CachingPipeline; |
| |
| public abstract class ImageFilterRS extends ImageFilter { |
| private static final String LOGTAG = "ImageFilterRS"; |
| private boolean DEBUG = false; |
| private int mLastInputWidth = 0; |
| private int mLastInputHeight = 0; |
| |
| private static ScriptC_grey mGreyConvert = null; |
| private static RenderScript mRScache = null; |
| |
| private volatile boolean mResourcesLoaded = false; |
| |
| protected abstract void createFilter(android.content.res.Resources res, |
| float scaleFactor, int quality); |
| |
| protected abstract void runFilter(); |
| |
| protected void update(Bitmap bitmap) { |
| getOutPixelsAllocation().copyTo(bitmap); |
| } |
| |
| protected RenderScript getRenderScriptContext() { |
| return CachingPipeline.getRenderScriptContext(); |
| } |
| |
| protected Allocation getInPixelsAllocation() { |
| CachingPipeline pipeline = getEnvironment().getCachingPipeline(); |
| return pipeline.getInPixelsAllocation(); |
| } |
| |
| protected Allocation getOutPixelsAllocation() { |
| CachingPipeline pipeline = getEnvironment().getCachingPipeline(); |
| return pipeline.getOutPixelsAllocation(); |
| } |
| |
| @Override |
| public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) { |
| if (bitmap == null || bitmap.getWidth() == 0 || bitmap.getHeight() == 0) { |
| return bitmap; |
| } |
| try { |
| CachingPipeline pipeline = getEnvironment().getCachingPipeline(); |
| if (DEBUG) { |
| Log.v(LOGTAG, "apply filter " + getName() + " in pipeline " + pipeline.getName()); |
| } |
| Resources rsc = pipeline.getResources(); |
| boolean sizeChanged = false; |
| if (getInPixelsAllocation() != null |
| && ((getInPixelsAllocation().getType().getX() != mLastInputWidth) |
| || (getInPixelsAllocation().getType().getY() != mLastInputHeight))) { |
| sizeChanged = true; |
| } |
| if (pipeline.prepareRenderscriptAllocations(bitmap) |
| || !isResourcesLoaded() || sizeChanged) { |
| freeResources(); |
| createFilter(rsc, scaleFactor, quality); |
| setResourcesLoaded(true); |
| mLastInputWidth = getInPixelsAllocation().getType().getX(); |
| mLastInputHeight = getInPixelsAllocation().getType().getY(); |
| } |
| bindScriptValues(); |
| runFilter(); |
| update(bitmap); |
| if (DEBUG) { |
| Log.v(LOGTAG, "DONE apply filter " + getName() + " in pipeline " + pipeline.getName()); |
| } |
| } catch (android.renderscript.RSIllegalArgumentException e) { |
| Log.e(LOGTAG, "Illegal argument? " + e); |
| } catch (android.renderscript.RSRuntimeException e) { |
| Log.e(LOGTAG, "RS runtime exception ? " + e); |
| } catch (java.lang.OutOfMemoryError e) { |
| // Many of the renderscript filters allocated large (>16Mb resources) in order to apply. |
| System.gc(); |
| displayLowMemoryToast(); |
| Log.e(LOGTAG, "not enough memory for filter " + getName(), e); |
| } |
| return bitmap; |
| } |
| |
| private static Allocation convertBitmap(Bitmap bitmap) { |
| return Allocation.createFromBitmap(CachingPipeline.getRenderScriptContext(), bitmap, |
| Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT); |
| } |
| |
| private static Allocation convertRGBAtoA(Bitmap bitmap) { |
| RenderScript RS = CachingPipeline.getRenderScriptContext(); |
| if (RS != mRScache || mGreyConvert == null) { |
| mGreyConvert = new ScriptC_grey(RS, RS.getApplicationContext().getResources(), |
| R.raw.grey); |
| mRScache = RS; |
| } |
| |
| Type.Builder tb_a8 = new Type.Builder(RS, Element.A_8(RS)); |
| |
| Allocation bitmapTemp = convertBitmap(bitmap); |
| if (bitmapTemp.getType().getElement().isCompatible(Element.A_8(RS))) { |
| return bitmapTemp; |
| } |
| |
| tb_a8.setX(bitmapTemp.getType().getX()); |
| tb_a8.setY(bitmapTemp.getType().getY()); |
| Allocation bitmapAlloc = Allocation.createTyped(RS, tb_a8.create()); |
| mGreyConvert.forEach_RGBAtoA(bitmapTemp, bitmapAlloc); |
| bitmapTemp.destroy(); |
| return bitmapAlloc; |
| } |
| |
| public Allocation loadScaledResourceAlpha(int resource, int inSampleSize) { |
| Resources res = CachingPipeline.getResources(); |
| final BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inPreferredConfig = Bitmap.Config.ALPHA_8; |
| options.inSampleSize = inSampleSize; |
| Bitmap bitmap = BitmapFactory.decodeResource( |
| res, |
| resource, options); |
| Allocation ret = convertRGBAtoA(bitmap); |
| bitmap.recycle(); |
| return ret; |
| } |
| |
| public Allocation loadResourceAlpha(int resource) { |
| return loadScaledResourceAlpha(resource, 1); |
| } |
| |
| public Allocation loadResource(int resource) { |
| Resources res = CachingPipeline.getResources(); |
| final BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inPreferredConfig = Bitmap.Config.ARGB_8888; |
| Bitmap bitmap = BitmapFactory.decodeResource( |
| res, |
| resource, options); |
| Allocation ret = convertBitmap(bitmap); |
| bitmap.recycle(); |
| return ret; |
| } |
| |
| private boolean isResourcesLoaded() { |
| return mResourcesLoaded; |
| } |
| |
| private void setResourcesLoaded(boolean resourcesLoaded) { |
| mResourcesLoaded = resourcesLoaded; |
| } |
| |
| /** |
| * Bitmaps and RS Allocations should be cleared here |
| */ |
| abstract protected void resetAllocations(); |
| |
| /** |
| * RS Script objects (and all other RS objects) should be cleared here |
| */ |
| abstract protected void resetScripts(); |
| |
| /** |
| * Scripts values should be bound here |
| */ |
| abstract protected void bindScriptValues(); |
| |
| public void freeResources() { |
| if (!isResourcesLoaded()) { |
| return; |
| } |
| resetAllocations(); |
| setResourcesLoaded(false); |
| } |
| } |