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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.cache;
import android.graphics.Bitmap;
import android.os.*;
import android.os.Process;
import android.support.v8.renderscript.*;
import android.util.Log;
import com.android.gallery3d.filtershow.filters.FiltersManager;
import com.android.gallery3d.filtershow.filters.ImageFilterRS;
import com.android.gallery3d.filtershow.imageshow.GeometryMetadata;
import com.android.gallery3d.filtershow.imageshow.MasterImage;
import com.android.gallery3d.filtershow.presets.ImagePreset;
public class FilteringPipeline implements Handler.Callback {
private static volatile FilteringPipeline sPipeline = null;
private static final String LOGTAG = "FilteringPipeline";
private boolean DEBUG = false;
private static long HIRES_DELAY = 100; // in ms
private volatile boolean mPipelineIsOn = false;
private CachingPipeline mAccessoryPipeline = null;
private CachingPipeline mPreviewPipeline = null;
private HandlerThread mHandlerThread = null;
private final static int NEW_PRESET = 0;
private final static int NEW_RENDERING_REQUEST = 1;
private final static int COMPUTE_PRESET = 2;
private final static int COMPUTE_RENDERING_REQUEST = 3;
private final static int COMPUTE_PARTIAL_RENDERING_REQUEST = 4;
private volatile boolean mHasUnhandledPreviewRequest = false;
private Handler mProcessingHandler = null;
private final Handler mUIHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case NEW_PRESET: {
TripleBufferBitmap buffer = MasterImage.getImage().getDoubleBuffer();
buffer.swapConsumer();
MasterImage.getImage().notifyObservers();
if (mHasUnhandledPreviewRequest) {
updatePreviewBuffer();
}
break;
}
case NEW_RENDERING_REQUEST: {
RenderingRequest request = (RenderingRequest) msg.obj;
request.markAvailable();
break;
}
}
}
};
@Override
public boolean handleMessage(Message msg) {
if (!mPipelineIsOn) {
return false;
}
switch (msg.what) {
case COMPUTE_PRESET: {
ImagePreset preset = (ImagePreset) msg.obj;
TripleBufferBitmap buffer = MasterImage.getImage().getDoubleBuffer();
mPreviewPipeline.compute(buffer, preset, COMPUTE_PRESET);
buffer.swapProducer();
Message uimsg = mUIHandler.obtainMessage(NEW_PRESET);
mUIHandler.sendMessage(uimsg);
break;
}
case COMPUTE_RENDERING_REQUEST:
case COMPUTE_PARTIAL_RENDERING_REQUEST: {
if (msg.what == COMPUTE_PARTIAL_RENDERING_REQUEST) {
if (mProcessingHandler.hasMessages(COMPUTE_PARTIAL_RENDERING_REQUEST)) {
return false;
}
}
RenderingRequest request = (RenderingRequest) msg.obj;
mAccessoryPipeline.render(request);
Message uimsg = mUIHandler.obtainMessage(NEW_RENDERING_REQUEST);
uimsg.obj = request;
mUIHandler.sendMessage(uimsg);
break;
}
}
return false;
}
private FilteringPipeline() {
mHandlerThread = new HandlerThread("FilteringPipeline",
Process.THREAD_PRIORITY_FOREGROUND);
mHandlerThread.start();
mProcessingHandler = new Handler(mHandlerThread.getLooper(), this);
mAccessoryPipeline = new CachingPipeline(FiltersManager.getManager());
mPreviewPipeline = new CachingPipeline(FiltersManager.getPreviewManager());
}
public synchronized static FilteringPipeline getPipeline() {
if (sPipeline == null) {
sPipeline = new FilteringPipeline();
}
return sPipeline;
}
public void setOriginal(Bitmap bitmap) {
if (mPipelineIsOn) {
Log.e(LOGTAG, "setOriginal called after pipeline initialization!");
return;
}
Log.v(LOGTAG,"setOriginal, size " + bitmap.getWidth() + " x " + bitmap.getHeight());
mAccessoryPipeline.setOriginal(bitmap);
mPreviewPipeline.setOriginal(bitmap);
}
public void postRenderingRequest(RenderingRequest request) {
if (!mPipelineIsOn) {
return;
}
int type = COMPUTE_RENDERING_REQUEST;
if (request.getType() == RenderingRequest.PARTIAL_RENDERING) {
type = COMPUTE_PARTIAL_RENDERING_REQUEST;
}
Message msg = mProcessingHandler.obtainMessage(type);
msg.obj = request;
if (type == COMPUTE_PARTIAL_RENDERING_REQUEST) {
mProcessingHandler.sendMessageDelayed(msg, HIRES_DELAY);
} else {
mProcessingHandler.sendMessage(msg);
}
}
public void updatePreviewBuffer() {
if (!mPipelineIsOn) {
return;
}
mHasUnhandledPreviewRequest = true;
if (mProcessingHandler.hasMessages(COMPUTE_PRESET)) {
return;
}
if (!mPreviewPipeline.needsRepaint()) {
return;
}
if (MasterImage.getImage().getPreset() == null) {
return;
}
Message msg = mProcessingHandler.obtainMessage(COMPUTE_PRESET);
msg.obj = MasterImage.getImage().getPreset();
mHasUnhandledPreviewRequest = false;
mProcessingHandler.sendMessageAtFrontOfQueue(msg);
}
public void setPreviewScaleFactor(float previewScaleFactor) {
mAccessoryPipeline.setPreviewScaleFactor(previewScaleFactor);
mPreviewPipeline.setPreviewScaleFactor(previewScaleFactor);
}
public static synchronized void reset() {
sPipeline.mAccessoryPipeline.reset();
sPipeline.mPreviewPipeline.reset();
sPipeline.mHandlerThread.quit();
sPipeline = null;
}
public void turnOnPipeline(boolean t) {
mPipelineIsOn = t;
if (mPipelineIsOn) {
assert(mPreviewPipeline.isInitialized());
assert(mAccessoryPipeline.isInitialized());
updatePreviewBuffer();
}
}
}
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