Android播放器实现视频窗口实时放大缩小功能

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Android播放器实现视频窗口实时放大缩小功能

daniulive 2019-08-16 11:21:53 浏览279
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很多开发者希望我们的Android平台RTSP/RTMP播放端实现视频窗口的放大缩小功能,为此,我们做了个简单的demo,通过播放端回调RGB数据,直接在上层view操作处理即可,Github:https://github.com/daniulive/SmarterStreaming

无视频无真相:http://www.iqiyi.com/w_19s9sa7epp.html

基本流程如下:

  1. 基础的初始化和参数设定

        libPlayer = new SmartPlayerJniV2();
        myContext = this.getApplicationContext();
        sSurfaceView = (SurfaceView) this.findViewById(R.id.surface);
        surface_renderer = new RGBSurfaceRenderer(sSurfaceView);
    

private void InitAndSetConfig() {

    playerHandle = libPlayer.SmartPlayerOpen(myContext);

    if (playerHandle == 0) {
        Log.e(TAG, "surfaceHandle with nil..");
        return;
    }

    libPlayer.SetSmartPlayerEventCallbackV2(playerHandle,
            new EventHandeV2());

    libPlayer.SmartPlayerSetBuffer(playerHandle, playBuffer);

    // set report download speed(默认2秒一次回调 用户可自行调整report间隔)
    libPlayer.SmartPlayerSetReportDownloadSpeed(playerHandle, 1, 2);

    libPlayer.SmartPlayerSetFastStartup(playerHandle, isFastStartup ? 1 : 0);

    //设置RTSP超时时间
    int rtsp_timeout = 10;
    libPlayer.SmartPlayerSetRTSPTimeout(playerHandle, rtsp_timeout);

    //设置RTSP TCP/UDP模式自动切换
    int is_auto_switch_tcp_udp = 1;
    libPlayer.SmartPlayerSetRTSPAutoSwitchTcpUdp(playerHandle, is_auto_switch_tcp_udp);

    libPlayer.SmartPlayerSaveImageFlag(playerHandle, 1);

    // It only used when playback RTSP stream..
    // libPlayer.SmartPlayerSetRTSPTcpMode(playerHandle, 1);

    playbackUrl = "rtmp://202.69.69.180:443/webcast/bshdlive-pc";

    //playbackUrl = "rtsp://184.72.239.149/vod/mp4://BigBuckBunny_175k.mov";

    libPlayer.SmartPlayerSetUrl(playerHandle, playbackUrl);
}

2.  设置External Render,回调RGBA数据

libPlayer.SmartPlayerSetExternalRender(playerHandle, new RGBAExternalRender());

Log.i(TAG, "Start playback stream++");

            InitAndSetConfig();

            // External Render
            libPlayer.SmartPlayerSetExternalRender(playerHandle, new RGBAExternalRender());

            libPlayer.SmartPlayerSetAudioOutputType(playerHandle, 0);

            if (isMute) {
                libPlayer.SmartPlayerSetMute(playerHandle, isMute ? 1
                        : 0);
            }

            if (isHardwareDecoder) {
                int isSupportHevcHwDecoder = libPlayer.SetSmartPlayerVideoHevcHWDecoder(playerHandle, 1);

                int isSupportH264HwDecoder = libPlayer
                        .SetSmartPlayerVideoHWDecoder(playerHandle, 1);

                Log.i(TAG, "isSupportH264HwDecoder: " + isSupportH264HwDecoder + ", isSupportHevcHwDecoder: " + isSupportHevcHwDecoder);
            }

            libPlayer.SmartPlayerSetLowLatencyMode(playerHandle, isLowLatency ? 1
                    : 0);

            libPlayer.SmartPlayerSetFlipVertical(playerHandle, is_flip_vertical ? 1 : 0);

            libPlayer.SmartPlayerSetFlipHorizontal(playerHandle, is_flip_horizontal ? 1 : 0);

            libPlayer.SmartPlayerSetRotation(playerHandle, rotate_degrees);

            int iPlaybackRet = libPlayer
                    .SmartPlayerStartPlay(playerHandle);

            if (iPlaybackRet != 0) {
                Log.e(TAG, "Call SmartPlayerStartPlay failed..");
                return;
            }

            surface_renderer.StartRender();

            btnStartStopPlayback.setText("停止播放 ");

            isPlaying = true;
            Log.i(TAG, "Start playback stream--");
  1. 回调RGBA数据:

class RGBAExternalRender implements NTExternalRender {

    // public static final int NT_FRAME_FORMAT_RGBA = 1;
    // public static final int NT_FRAME_FORMAT_ABGR = 2;
    // public static final int NT_FRAME_FORMAT_I420 = 3;

    private int width_ = 0;
    private int height_ = 0;
    private int row_bytes_ = 0;
    private ByteBuffer rgba_buffer_ = null;

    @Override
    public int getNTFrameFormat() {
        Log.i(TAG, "RGBAExternalRender::getNTFrameFormat return "
                + NT_FRAME_FORMAT_RGBA);
        return NT_FRAME_FORMAT_RGBA;
    }

    @Override
    public void onNTFrameSizeChanged(int width, int height) {
        width_ = width;
        height_ = height;

        row_bytes_ = width_ * 4;

        Log.i(TAG, "RGBAExternalRender::onNTFrameSizeChanged width_:"
                + width_ + " height_:" + height_);

        rgba_buffer_ = ByteBuffer.allocateDirect(row_bytes_ * height_);
    }

    @Override
    public ByteBuffer getNTPlaneByteBuffer(int index) {
        if (index == 0) {
            return rgba_buffer_;
        } else {
            Log.e(TAG,
                    "RGBAExternalRender::getNTPlaneByteBuffer index error:"
                            + index);
            return null;
        }
    }

    @Override
    public int getNTPlanePerRowBytes(int index) {
        if (index == 0) {
            return row_bytes_;
        } else {
            Log.e(TAG,
                    "RGBAExternalRender::getNTPlanePerRowBytes index error:"
                            + index);
            return 0;
        }
    }

    public void onNTRenderFrame(int width, int height, long timestamp) {
        if (rgba_buffer_ == null)
            return;

       // rgba_buffer_.rewind();

        // copy buffer

        // test
        // byte[] test_buffer = new byte[16];
        // rgba_buffer_.get(test_buffer);

        //Log.i(TAG, "RGBAExternalRender:onNTRenderFrame w=" + width + " h="
        //        + height + " timestamp=" + timestamp);

        // Log.i(TAG, "RGBAExternalRender:onNTRenderFrame rgba:" +
        // bytesToHexString(test_buffer));

        if ( surface_renderer != null)
        {
            surface_renderer.SetRGBImage(width, height, rgba_buffer_);
        }
    }
}
  1. 对视频view进行放大缩小等状态处理:

    @SuppressLint("ClickableViewAccessibility")
    public RGBSurfaceRenderer(SurfaceView view)
    {

    surface_holder_ = view.getHolder();
    if (surface_holder_ == null)
    {
        Log.e(TAG, "RGBSurfaceRenderer, surfaceHolder with null..");
        return;
    }
    surface_holder_.addCallback(this);
    
    view.setOnTouchListener(new View.OnTouchListener()
    {
        @Override
        public boolean onTouch(View v, MotionEvent event)
        {
            Log.e(TAG, "onTouch called..");
            switch (event.getAction() & MotionEvent.ACTION_MASK) {
                case MotionEvent.ACTION_DOWN:
                    start_point_.set(event.getX(), event.getY());
                    status_ = DRAG;
                    break;
    
                case MotionEvent.ACTION_POINTER_DOWN:
                    float distance = spacing(event);
                    if (distance > 10f) {
    
                        status_ = ZOOM;
                        start_distance_ = distance;
                    }
                    break;
    
                case MotionEvent.ACTION_MOVE:
                    if (status_ == DRAG) {
                        dragAction(event);
                    } else {
    
                        if (event.getPointerCount() == 1)
                            return true;
                        zoomAcition(event);
                    }
                    break;
                case MotionEvent.ACTION_UP:
                case MotionEvent.ACTION_POINTER_UP:
                    status_ = NONE;
                    break;
                default:
                    break;
            }
    
            return true;
        }
    });
    

    }

  2. 关闭播放:

if (isPlaying) {

            Log.i(TAG, "Stop playback stream++");

            int iRet = libPlayer.SmartPlayerStopPlay(playerHandle);

            if (iRet != 0) {
                Log.e(TAG, "Call SmartPlayerStopPlay failed..");
                return;
            }

            surface_renderer.StopRender();

            libPlayer.SmartPlayerClose(playerHandle);
            playerHandle = 0;

            isPlaying = false;
            btnStartStopPlayback.setText("开始播放 ");

            Log.i(TAG, "Stop playback stream--");
        } 

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