android视频放大缩小编辑,Android播放器实现视频窗口实时放大缩小功能

忘是亡心i 2021-09-08 03:36 457阅读 0赞

很多开发者希望Android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

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--");

3. 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\_);

4. 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;

\});

5. 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--");

android视频放大缩小编辑,Android播放器实现视频窗口实时放大缩小功能

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