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package com.android.gallery3d.filtershow.cache;
import android.os.Handler;
import android.os.Handler.Callback;
import android.os.HandlerThread;
import android.os.Message;
import android.os.Process;
public class DelayedPresetCache extends DirectPresetCache implements Callback {
private HandlerThread mHandlerThread = null;
private final static int NEW_PRESET = 0;
private final static int COMPUTE_PRESET = 1;
private Handler mProcessingHandler = null;
private final Handler mUIHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case NEW_PRESET: {
CachedPreset cache = (CachedPreset) msg.obj;
didCompute(cache);
break;
}
}
}
};
@Override
public boolean handleMessage(Message msg) {
switch (msg.what) {
case COMPUTE_PRESET: {
CachedPreset cache = (CachedPreset) msg.obj;
compute(cache);
Message uimsg = mUIHandler.obtainMessage(NEW_PRESET, cache);
mUIHandler.sendMessage(uimsg);
break;
}
}
return false;
}
public DelayedPresetCache(ImageLoader loader, int size) {
super(loader, size);
mHandlerThread = new HandlerThread("ImageProcessing", Process.THREAD_PRIORITY_BACKGROUND);
mHandlerThread.start();
mProcessingHandler = new Handler(mHandlerThread.getLooper(), this);
}
@Override
protected void willCompute(CachedPreset cache) {
if (cache == null) {
return;
}
cache.setBusy(true);
Message msg = mProcessingHandler.obtainMessage(COMPUTE_PRESET, cache);
mProcessingHandler.sendMessage(msg);
}
}
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