Android播放器实现视频窗口实时放大缩小功能
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：
-
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--");- 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_);
}
}
}-
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; } });}
- 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--");
}
