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package com.javispedro.vndroid;
import android.content.Context;
import android.content.ContextWrapper;
import android.hardware.display.VirtualDisplay;
import android.media.Image;
import android.media.ImageReader;
import android.support.annotation.Nullable;
import android.util.Log;
public abstract class ScreenGrabber extends ContextWrapper {
private static final String TAG = ScreenGrabber.class.getSimpleName();
protected static final int MAX_IMAGES = 3;
@Nullable protected ImageReader reader;
@Nullable protected VirtualDisplay display;
@Nullable protected Callback callback;
public interface Callback {
void onImage(Image image);
}
protected class VirtualDisplayCallback extends VirtualDisplay.Callback {
@Override
public void onPaused() {
Log.d(TAG, "onVirtualDisplayPaused");
}
@Override
public void onResumed() {
Log.d(TAG, "onVirtualDisplayResumed");
}
@Override
public void onStopped() {
Log.d(TAG, "onVirtualDisplayStopped");
}
}
protected class ImageReaderCallback implements ImageReader.OnImageAvailableListener {
@Override
public void onImageAvailable(ImageReader reader) {
if (callback != null) {
Image image = reader.acquireLatestImage();
callback.onImage(image);
}
}
}
protected ScreenGrabber(Context context) {
super(context);
}
public abstract void start();
public void stop() {
if (display != null) {
display.release();
display = null;
}
if (reader != null) {
reader.close();
reader = null;
}
}
public void setCallback(Callback c) {
callback = c;
}
public int scaleInputX(int x) {
return x;
}
public int scaleInputY(int y) {
return y;
}
public boolean hasSizeChanged() { return false; }
public void updateScreenSize() { }
}
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