0

我已经用 kotlin 实现了一个 webRtc android 应用程序。我创建了一个类 LocalParticipant，在里面我有一个启动相机和音频流的功能

private var eglBaseContext: EglBase.Context = EglBase.create().eglBaseContext
private var peerConnectionFactory: PeerConnectionFactory? = null
private var surfaceTextureHelper: SurfaceTextureHelper? = null

private var audioSource: AudioSource? = null
private var videoSource: VideoSource? = null
private var videoCapturer: VideoCapturer? = null

fun initAudioSource(): AudioSource? {
        if (audioSource == null) audioSource = peerConnectionFactory!!.createAudioSource(MediaConstraints())
        return audioSource
    }

    fun initAudioTrack(): AudioTrack? {
        return peerConnectionFactory?.let {
            audioTrack = it.createAudioTrack("101", it.createAudioSource(MediaConstraints()))
            audioTrack
        }
    }

    fun initVideoSource(): VideoSource? {
        if (videoSource == null) {
            if (videoCapturer == null)
                videoCapturer = createCameraCapturer()
            videoSource = peerConnectionFactory?.createVideoSource(videoCapturer!!.isScreencast)
        }
        return videoSource
    }

    fun initVideoTrack(videoHeader: VideoHeader): VideoTrack? {
        if (videoTrack == null) {
            videoCapturer?.initialize(surfaceTextureHelper, context, videoSource?.capturerObserver)
            videoCapturer?.startCapture(videoHeader.width, videoHeader.height, videoHeader.fps)
            videoTrack = peerConnectionFactory?.createVideoTrack("100", videoSource)
        }
        return videoTrack
    }

    fun addLocalSink() {
        videoTrack?.removeSink(localVideoView)
        videoTrack?.addSink(localVideoView)
    }

    fun setUpVideoSource(videoHeader: VideoHeader) {
        peerConnectionFactory?.let {
            surfaceTextureHelper = SurfaceTextureHelper.create("CaptureThread", eglBaseContext)
            initVideoSource()
            initVideoTrack(videoHeader)
            addLocalSink()
        }
    }

    fun startLocalParticipantTracks(videoHeader: VideoHeader) {
        peerConnectionFactory = session.peerConnectionFactory ?: return
        initAudioSource()
        initAudioTrack()
        if (videoHeader.hasVideo == 1) setUpVideoSource(videoHeader)
    }

为了启动整个过程，以便 localParticipant 可以看到自己，我 startLocalParticipantTracks从 ViewModel 调用。一切正常。
所以现在，我想实现 PictureInPictureMode。当我按下主页按钮时，localParticipantContainer 视图被隐藏。但是我再次打开应用程序窗口，预览没有加载，所以我什么也看不到，尽管远程参与者继续看到我在相机上直播。

从 PipMode 退出时，我只调用localParticipant.addLocalSink 我还应该做什么？

4

2 回答 2

0

再次打开应用时尝试拨打电话：

videoCapturer?.startCapture(videoHeader.width, videoHeader.height, videoHeader.fps)

这将再次启动视频（视频捕获器）源

于 2021-05-31T14:44:55.617 回答
0

问题解决了。问题是我没有通过新的surfaceViewRenderer，因为重新创建了活动。所以我不得不通过新观点

于 2021-06-01T12:50:49.687 回答