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ScreenSharingFragment.java
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ScreenSharingFragment.java
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package com.opentok.accelerator.core.screensharing;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.graphics.Point;
import android.hardware.display.DisplayManager;
import android.hardware.display.VirtualDisplay;
import android.media.ImageReader;
import android.media.projection.MediaProjection;
import android.media.projection.MediaProjectionManager;
import android.os.Build;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.Display;
import android.view.ViewGroup;
import androidx.fragment.app.Fragment;
import com.opentok.accelerator.core.GlobalLogLevel;
import com.opentok.accelerator.core.utils.LogWrapper;
/**
* Represents a headless fragment to enable the screensharing by default
*/
public class ScreenSharingFragment extends Fragment {
private static final String LOG_TAG = ScreenSharingFragment.class.getSimpleName();
private static final short LOCAL_LOG_LEVEL = 0xFF;
private static final LogWrapper LOG =
new LogWrapper((short)(GlobalLogLevel.sMaxLogLevel & LOCAL_LOG_LEVEL));
public static void setLogLevel(short logLevel) {
LOG.setLogLevel(logLevel);
}
private static final String ERROR = "ScreenSharing error";
private static final int REQUEST_MEDIA_PROJECTION = 1;
public ViewGroup getScreen() {
return mScreen;
}
private ViewGroup mScreen;
private VirtualDisplay mVirtualDisplay;
private int mDensity;
private int mWidth;
private int mHeight;
private MediaProjectionManager mMediaProjectionManager;
private MediaProjection mMediaProjection;
private ImageReader mImageReader;
private int mResultCode;
private Intent mResultData;
public void setListener(ScreenSharingListener listener) {
this.mListener = listener;
}
private ScreenSharingListener mListener;
public ScreenSharingCapturer getScreenCapturer() {
return mScreenCapturer;
}
private ScreenSharingCapturer mScreenCapturer;
public interface ScreenSharingListener {
/**
* Invoked when the ScreenCapturer is ready
*/
void onScreenCapturerReady();
/**
* Invoked when an error happened
*/
void onError(String error);
}
public static ScreenSharingFragment newInstance() {
ScreenSharingFragment fragment = new ScreenSharingFragment();
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Activity activity = getActivity();
DisplayMetrics metrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
mDensity = metrics.densityDpi;
mMediaProjectionManager = (MediaProjectionManager)
activity.getSystemService(Context.MEDIA_PROJECTION_SERVICE);
//run permissions
startActivityForResult(
mMediaProjectionManager.createScreenCaptureIntent(),
REQUEST_MEDIA_PROJECTION);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_MEDIA_PROJECTION) {
if (resultCode != Activity.RESULT_OK) {
LOG.i(LOG_TAG, "User cancelled screensharing permission");
mListener.onError(ERROR + ": User cancelled screensharing permission");
return;
}
Activity activity = getActivity();
if (activity == null) {
mListener.onError(ERROR + ": User cancelled screensharing permission");
return;
}
LOG.i(LOG_TAG, "Starting screen capture");
mResultCode = resultCode;
mResultData = data;
startScreenCapture();
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void setUpMediaProjection() {
mMediaProjection = mMediaProjectionManager.getMediaProjection(mResultCode, mResultData);
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void setUpVirtualDisplay() {
mScreen = (ViewGroup) getActivity().getWindow().getDecorView().getRootView();
// display metrics
DisplayMetrics metrics = getResources().getDisplayMetrics();
mDensity = metrics.densityDpi;
Display mDisplay = getActivity().getWindowManager().getDefaultDisplay();
Point size = new Point();
mDisplay.getRealSize(size);
mWidth = size.x;
mHeight = size.y;
// start capture reader
mImageReader = ImageReader.newInstance(mWidth, mHeight, PixelFormat.RGBA_8888, 2);
int flags = DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR;
mVirtualDisplay = mMediaProjection.createVirtualDisplay("ScreenCapture", mWidth, mHeight, mDensity, flags, mImageReader.getSurface(), null, null);
size.set(mWidth, mHeight);
//create ScreenCapturer
mScreenCapturer = new ScreenSharingCapturer(getActivity(), mScreen, mImageReader);
mListener.onScreenCapturerReady();
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void tearDownMediaProjection() {
if (mMediaProjection != null) {
mMediaProjection.stop();
mMediaProjection = null;
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public void startScreenCapture() {
if (mMediaProjection != null) {
LOG.i(LOG_TAG, "mMediaProjection != null");
setUpVirtualDisplay();
} else if (mResultCode != 0 && mResultData != null) {
LOG.i(LOG_TAG, "mResultCode != 0 && mResultData != null");
setUpMediaProjection();
setUpVirtualDisplay();
} else {
LOG.i(LOG_TAG, "Requesting confirmation");
startActivityForResult(
mMediaProjectionManager.createScreenCaptureIntent(),
REQUEST_MEDIA_PROJECTION);
}
}
@TargetApi(Build.VERSION_CODES.KITKAT)
public void stopScreenCapture() {
if (mVirtualDisplay == null) {
return;
}
mVirtualDisplay.release();
mVirtualDisplay = null;
tearDownMediaProjection();
}
}