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/*
* 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.filtershow.pipeline;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.support.v8.renderscript.Allocation;
import android.support.v8.renderscript.RenderScript;
import android.util.Log;
import com.android.gallery3d.filtershow.cache.BitmapCache;
import com.android.gallery3d.filtershow.imageshow.MasterImage;
public class Buffer {
private static final String LOGTAG = "Buffer";
private Bitmap mBitmap;
private Allocation mAllocation;
private boolean mUseAllocation = false;
private ImagePreset mPreset;
public Buffer(Bitmap bitmap) {
RenderScript rs = CachingPipeline.getRenderScriptContext();
if (bitmap != null) {
BitmapCache cache = MasterImage.getImage().getBitmapCache();
mBitmap = cache.getBitmapCopy(bitmap, BitmapCache.PREVIEW_CACHE);
}
if (mUseAllocation) {
// TODO: recreate the allocation when the RS context changes
mAllocation = Allocation.createFromBitmap(rs, mBitmap,
Allocation.MipmapControl.MIPMAP_NONE,
Allocation.USAGE_SHARED | Allocation.USAGE_SCRIPT);
}
}
public boolean isSameSize(Bitmap bitmap) {
if (mBitmap == null || bitmap == null) {
return false;
}
if (mBitmap.getWidth() == bitmap.getWidth()
&& mBitmap.getHeight() == bitmap.getHeight()) {
return true;
}
return false;
}
public synchronized void useBitmap(Bitmap bitmap) {
Canvas canvas = new Canvas(mBitmap);
canvas.drawBitmap(bitmap, 0, 0, null);
}
public synchronized Bitmap getBitmap() {
return mBitmap;
}
public Allocation getAllocation() {
return mAllocation;
}
public void sync() {
if (mUseAllocation) {
mAllocation.copyTo(mBitmap);
}
}
public ImagePreset getPreset() {
return mPreset;
}
public void setPreset(ImagePreset preset) {
if ((mPreset == null) || (!mPreset.same(preset))) {
mPreset = new ImagePreset(preset);
} else {
mPreset.updateWith(preset);
}
}
public void remove() {
BitmapCache cache = MasterImage.getImage().getBitmapCache();
if (cache.cache(mBitmap)) {
mBitmap = null;
}
}
}
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