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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 com.android.gallery3d.filtershow.filters.FiltersManager;
import com.android.gallery3d.filtershow.imageshow.MasterImage;
public class UpdatePreviewTask extends ProcessingTask {
private static final String LOGTAG = "UpdatePreviewTask";
private CachingPipeline mPreviewPipeline = null;
private boolean mHasUnhandledPreviewRequest = false;
private boolean mPipelineIsOn = false;
public UpdatePreviewTask() {
mPreviewPipeline = new CachingPipeline(
FiltersManager.getPreviewManager(), "Preview");
}
public void setOriginal(Bitmap bitmap) {
mPreviewPipeline.setOriginal(bitmap);
mPipelineIsOn = true;
}
public void updatePreview() {
if (!mPipelineIsOn) {
return;
}
mHasUnhandledPreviewRequest = true;
if (postRequest(null)) {
mHasUnhandledPreviewRequest = false;
}
}
@Override
public boolean isPriorityTask() {
return true;
}
@Override
public Result doInBackground(Request message) {
SharedBuffer buffer = MasterImage.getImage().getPreviewBuffer();
SharedPreset preset = MasterImage.getImage().getPreviewPreset();
ImagePreset renderingPreset = preset.dequeuePreset();
if ( (buffer != null) && (renderingPreset != null) &&
(buffer.getProducer() != null)) {
mPreviewPipeline.compute(buffer, renderingPreset, 0);
// set the preset we used in the buffer for later inspection UI-side
buffer.getProducer().setPreset(renderingPreset);
buffer.getProducer().sync();
buffer.swapProducer(); // push back the result
}
return null;
}
@Override
public void onResult(Result message) {
MasterImage.getImage().notifyObservers();
if (mHasUnhandledPreviewRequest) {
updatePreview();
}
}
public void setPipelineIsOn(boolean pipelineIsOn) {
mPipelineIsOn = pipelineIsOn;
}
}
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