现在开发一个移动应用程序(android)来控制 bebop 无人机,我在 SurfaceView 中接收视频。我想在这个 SurfaceView 上使用 VrVideoView(Google VR)。我不知道该怎么做。
有什么解决方案或好主意吗?
这是从无人机接收视频并在surfaceview中显示的代码:
public class BebopVideoView extends SurfaceView implements SurfaceHolder.Callback {
private static final String TAG = "BebopVideoView";
private static final String VIDEO_MIME_TYPE = "video/avc";
private static final int VIDEO_DEQUEUE_TIMEOUT = 33000;
private MediaCodec mMediaCodec;
private Lock mReadyLock;
private boolean mIsCodecConfigured = false;
private ByteBuffer mSpsBuffer;
private ByteBuffer mPpsBuffer;
private ByteBuffer[] mBuffers;
private static final int VIDEO_WIDTH = 640;
private static final int VIDEO_HEIGHT = 368;
public BebopVideoView(Context context) {
super(context);
customInit();
}
public BebopVideoView(Context context, AttributeSet attrs) {
super(context, attrs);
customInit();
}
public BebopVideoView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
customInit();
}
private void customInit() {
mReadyLock = new ReentrantLock();
getHolder().addCallback(this);
}
public void displayFrame(ARFrame frame) {
mReadyLock.lock();
if ((mMediaCodec != null)) {
if (mIsCodecConfigured) {
// Here we have either a good PFrame, or an IFrame
int index = -1;
try {
index = mMediaCodec.dequeueInputBuffer(VIDEO_DEQUEUE_TIMEOUT);
} catch (IllegalStateException e) {
Log.e(TAG, "Error while dequeue input buffer");
}
if (index >= 0) {
ByteBuffer b;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
b = mMediaCodec.getInputBuffer(index);
} else {
b = mBuffers[index];
b.clear();
}
if (b != null) {
b.put(frame.getByteData(), 0, frame.getDataSize());
}
try {
mMediaCodec.queueInputBuffer(index, 0, frame.getDataSize(), 0, 0);
} catch (IllegalStateException e) {
Log.e(TAG, "Error while queue input buffer");
}
}
}
// Try to display previous frame
MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
int outIndex;
try {
outIndex = mMediaCodec.dequeueOutputBuffer(info, 0);
while (outIndex >= 0) {
mMediaCodec.releaseOutputBuffer(outIndex, true);
outIndex = mMediaCodec.dequeueOutputBuffer(info, 0);
}
} catch (IllegalStateException e) {
Log.e(TAG, "Error while dequeue input buffer (outIndex)");
}
}
mReadyLock.unlock();
}
public void configureDecoder(ARControllerCodec codec) {
mReadyLock.lock();
if (codec.getType() == ARCONTROLLER_STREAM_CODEC_TYPE_ENUM.ARCONTROLLER_STREAM_CODEC_TYPE_H264) {
ARControllerCodec.H264 codecH264 = codec.getAsH264();
mSpsBuffer = ByteBuffer.wrap(codecH264.getSps().getByteData());
mPpsBuffer = ByteBuffer.wrap(codecH264.getPps().getByteData());
}
if ((mMediaCodec != null) && (mSpsBuffer != null)) {
configureMediaCodec();
}
mReadyLock.unlock();
}
private void configureMediaCodec() {
mMediaCodec.stop();
MediaFormat format = MediaFormat.createVideoFormat(VIDEO_MIME_TYPE, VIDEO_WIDTH, VIDEO_HEIGHT);
format.setByteBuffer("csd-0", mSpsBuffer);
format.setByteBuffer("csd-1", mPpsBuffer);
mMediaCodec.configure(format, getHolder().getSurface(), null, 0);
mMediaCodec.start();
if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.LOLLIPOP) {
mBuffers = mMediaCodec.getInputBuffers();
}
mIsCodecConfigured = true;
}
private void initMediaCodec(String type) {
try {
mMediaCodec = MediaCodec.createDecoderByType(type);
} catch (IOException e) {
Log.e(TAG, "Exception", e);
}
if ((mMediaCodec != null) && (mSpsBuffer != null)) {
configureMediaCodec();
}
}
private void releaseMediaCodec() {
if (mMediaCodec != null) {
if (mIsCodecConfigured) {
mMediaCodec.stop();
mMediaCodec.release();
}
mIsCodecConfigured = false;
mMediaCodec = null;
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
mReadyLock.lock();
initMediaCodec(VIDEO_MIME_TYPE);
mReadyLock.unlock();
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
mReadyLock.lock();
releaseMediaCodec();
mReadyLock.unlock();
}
}
在我使用的主要课程中:
private void initIHM() {
mVideoView = (BebopVideoView) findViewById(R.id.videoView);
}
@Override
public ARCONTROLLER_ERROR_ENUM configureDecoder(ARDeviceController deviceController, ARControllerCodec codec) {
mVideoView.configureDecoder(codec);
return ARCONTROLLER_ERROR_ENUM.ARCONTROLLER_OK;
}
@Override
public ARCONTROLLER_ERROR_ENUM onFrameReceived(ARDeviceController deviceController, ARFrame frame) {
mVideoView.displayFrame(frame);
return ARCONTROLLER_ERROR_ENUM.ARCONTROLLER_OK;
}
@Override
public void onFrameTimeout(ARDeviceController deviceController) {
}