嗨,我想在DJI phantom 3 pro的视频流上使用OpenCv进行一些图像处理.不幸的是,这件事是必要的自己解码视频.我知道应该使用Media Codec Android类,但我不知道该怎么做.我看到了一些从视频文件中解码视频的例子,但我无法根据我的目标修改此代码.有人可以展示一些示例或教程怎么做?感谢帮助
mReceivedVideoDataCallBack = new DJIReceivedVideoDataCallBack(){
@Override
public void onResult(byte[] videoBuffer,int size){
//recvData = true;
//DJI methods for decoding
//mDjiGLSurfaceView.setDataToDecoder(videoBuffer,size);
}
};
最佳答案
像这样初始化视频回调
mReceivedVideoDataCallBack = new DJICamera.CameraReceivedVideoDataCallback() {
@Override
public void onResult(byte[] videoBuffer,int size) {
if(mCodecManager != null){
// Send the raw H264 video data to codec manager for decoding
mCodecManager.sendDataToDecoder(videoBuffer,size);
}else {
Log.e(TAG,"mCodecManager is null");
}
}
}
让您的活动实现TextureView.SurfaceTextureListener
并且对于TextureView mVideoSurface在初始化之后调用此行:
mVideoSurface.setSurfaceTextureListener(this);
然后实施:
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface,int width,int height) {
Log.v(TAG,"onSurfaceTextureAvailable");
DJICamera camera = FPVDemoApplication.getCameraInstance();
if (mCodecManager == null && surface != null && camera != null) {
//normal init for the surface
mCodecManager = new DJICodecManager(this,surface,width,height);
Log.v(TAG,"Initialized CodecManager");
}
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface,"onSurfaceTextureSizeChanged");
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
Log.v(TAG,"onSurfaceTextureDestroyed");
if (mCodecManager != null) {
mCodecManager.cleanSurface();
mCodecManager = null;
}
return false;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
final Bitmap image = mVideoSurface.getBitmap();
//Do whatever you want with the bitmap image here on every frame
}
希望这可以帮助!
原文地址:https://www.jb51.cc/android/429889.html
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