我正在开发 android 应用程序并将 webrtc 与 openvidu 一起使用。我得到了屏幕共享和相机共享工作。但只有其中任何一种适用于一个对等连接。我无法在它们之间切换。默认情况下，当建立连接时，相机将被共享，单击按钮我应该能够在不断开现有连接的情况下共享屏幕。但是，在我的情况下并没有发生这种情况。它不会在单击按钮时发布屏幕。它变成空白。
如果有人在相机和共享屏幕之间切换，反之亦然，请帮助我。提前致谢。
public VideoTrack MakeCameraSettingsReady() {
final EglBase.Context eglBaseContext = EglBase.create().getEglBaseContext();
PeerConnectionFactory peerConnectionFactory = this.sessionManager.getPeerConnectionFactory();
// create AudioSource
AudioSource audioSource = peerConnectionFactory.createAudioSource(new MediaConstraints());
this.audioTrack = peerConnectionFactory.createAudioTrack("101", audioSource);
surfaceTextureHelper = SurfaceTextureHelper.create("CaptureThread", eglBaseContext);
// create VideoCapturer
videoCapturer = createVideoCapturer();
//MediaConstraints constraints = new MediaConstraints();
VideoSource videoSource = peerConnectionFactory.createVideoSource(videoCapturer.isScreencast());
localVideoTrack = peerConnectionFactory.createVideoTrack("100", videoSource);
videoCapturer.initialize(surfaceTextureHelper, context, videoSource.getCapturerObserver());
videoCapturer.startCapture(720, 1280, 30);
return localVideoTrack;
}
public VideoTrack MakeScreenCaptureReady() {
final EglBase.Context eglBaseContext = EglBase.create().getEglBaseContext();
PeerConnectionFactory peerConnectionFactory = this.sessionManager.getPeerConnectionFactory();
// create AudioSource
AudioSource audioSource = peerConnectionFactory.createAudioSource(new MediaConstraints());
this.audioTrack = peerConnectionFactory.createAudioTrack("101", audioSource);
surfaceTextureHelper = SurfaceTextureHelper.create("CaptureThread", eglBaseContext);
// create VideoCapturer
screenCapturerAndroid = (ScreenCapturerAndroid) createScreenCapturer();
//MediaConstraints constraints = new MediaConstraints();
VideoSource videoSource = peerConnectionFactory.createVideoSource(screenCapturerAndroid.isScreencast());
localVideoTrack = peerConnectionFactory.createVideoTrack("100", videoSource);
screenCapturerAndroid.initialize(surfaceTextureHelper, context, videoSource.getCapturerObserver());
screenCapturerAndroid.startCapture(720, 1280, 30);
return localVideoTrack;
}
当我单击按钮共享屏幕时，我使用以下代码：
private fun stopCameraShare(){
videoCapturerAndroid?.stopCapture()
localRenderer.dispose()
localVideoView.release()
localVideoView.clearImage()
stream?.removeTrack(localVideoTrack)
localVideoTrack.dispose()
}
private fun shareScreen(){
stopCameraShare()
val mediaProjectionManager = activity!!.getSystemService(Context.MEDIA_PROJECTION_SERVICE) as MediaProjectionManager
startActivityForResult(mediaProjectionManager.createScreenCaptureIntent(), 29)
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (requestCode == SCREEN_RECORD_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
//Start screen recording
mResultCode = resultCode
mResultData = data
runOnUiThread {
screenCaptureVideoTrack = mLiveSessionViewModel!!.localParticipant?.MakeScreenCaptureReady()
mLiveSessionViewModel!!.localParticipant?.screenCaptureVideoTrack = screenCaptureVideoTrack
}
}
}
}
我尝试过的参考资料： 如何在视频/音频通话中远程共享屏幕？
https://github.com/Jeffiano/ScreenShareRTC
最终，我试图找到一种可以在通信中间添加Track/removeTrack 的方法。谢谢！