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/*
* 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.app.Activity;
import android.graphics.Bitmap;
import android.support.v8.renderscript.*;
import android.util.Log;
public class ImageFilterRS extends ImageFilter {
private final String LOGTAG = "ImageFilterRS";
private static RenderScript mRS = null;
protected static Allocation mInPixelsAllocation;
protected static Allocation mOutPixelsAllocation;
private static android.content.res.Resources mResources = null;
private static Bitmap sOldBitmap = null;
private Bitmap mOldBitmap = null;
private final Bitmap.Config mBitmapConfig = Bitmap.Config.ARGB_8888;
public void prepare(Bitmap bitmap, float scaleFactor, boolean highQuality) {
if (sOldBitmap == null
|| (bitmap.getWidth() != sOldBitmap.getWidth())
|| (bitmap.getHeight() != sOldBitmap.getHeight())) {
if (mInPixelsAllocation != null) {
mInPixelsAllocation.destroy();
}
if (mOutPixelsAllocation != null) {
mOutPixelsAllocation.destroy();
}
Bitmap bitmapBuffer = bitmap.copy(mBitmapConfig, true);
mOutPixelsAllocation = Allocation.createFromBitmap(mRS, bitmapBuffer,
Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
mInPixelsAllocation = Allocation.createTyped(mRS,
mOutPixelsAllocation.getType());
sOldBitmap = bitmap;
}
mInPixelsAllocation.copyFrom(bitmap);
if (mOldBitmap != sOldBitmap) {
createFilter(mResources, scaleFactor, highQuality);
mOldBitmap = sOldBitmap;
}
}
public void createFilter(android.content.res.Resources res,
float scaleFactor, boolean highQuality) {
// Stub
}
public void runFilter() {
// Stub
}
public void update(Bitmap bitmap) {
mOutPixelsAllocation.copyTo(bitmap);
}
@Override
public Bitmap apply(Bitmap bitmap, float scaleFactor, boolean highQuality) {
if (bitmap == null) {
return bitmap;
}
try {
prepare(bitmap, scaleFactor, highQuality);
runFilter();
update(bitmap);
} catch (android.renderscript.RSIllegalArgumentException e) {
Log.e(LOGTAG, "Illegal argument? " + e);
} catch (android.renderscript.RSRuntimeException e) {
Log.e(LOGTAG, "RS runtime exception ? " + e);
}
return bitmap;
}
public static RenderScript getRenderScriptContext() {
return mRS;
}
public static void setRenderScriptContext(Activity context) {
mRS = RenderScript.create(context);
mResources = context.getResources();
if (mInPixelsAllocation != null) {
mInPixelsAllocation.destroy();
mInPixelsAllocation = null;
}
if (mOutPixelsAllocation != null) {
mOutPixelsAllocation.destroy();
mOutPixelsAllocation = null;
}
sOldBitmap = null;
}
}
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