public bool TryDecode(ref byte[] data, out FFmpegNative.AVFrame frame)
{
int gotPicture;
frame = new FFmpegNative.AVFrame();
fixed (byte* pData = &data[0])
fixed (FFmpegNative.AVFrame* pFrame = &frame)
{
var packet = new FFmpegNative.AVPacket {data = pData, size = data.Length};
int decodedSize = FFmpegNative.avcodec_decode_video2(_pDecodingContext, pFrame, &gotPicture, &packet);
if (decodedSize < 0)
Trace.TraceWarning("Error while decoding frame.");
}
return gotPicture == 1;
}
public byte[,,] ConvertFrame(FFmpegNative.AVFrame frame)
{
if (_initialized == false)
Initialize(frame.width, frame.height, (FFmpegNative.AVPixelFormat) frame.format);
fixed (byte* pOutputData = &_outputData[0, 0, 0])
{
byte** pSrcData = &(frame).data_0;
byte** pDstData = &(_pCurrentFrame)->data_0;
_pCurrentFrame->data_0 = pOutputData;
FFmpegNative.sws_scale(_pContext, pSrcData, frame.linesize, 0, frame.height, pDstData, _pCurrentFrame->linesize);
}
return _outputData;
}
private void Initialize(int width, int height, FFmpegNative.AVPixelFormat inFormat)
{
_initialized = true;
_pContext = FFmpegNative.sws_getContext(width, height, inFormat,
width, height, _pixelFormat,
FFmpegNative.SWS_FAST_BILINEAR, null, null, null);
if (_pContext == null)
throw new VideoConverterException("Could not initialize the conversion context.");
_pCurrentFrame = FFmpegNative.avcodec_alloc_frame();
int outputDataSize = FFmpegNative.avpicture_get_size(_pixelFormat, width, height);
int depth = outputDataSize/(height*width);
_outputData = new byte[height,width,depth];
fixed (byte* pOutputData = &_outputData[0, 0, 0])
{
FFmpegNative.avpicture_fill((FFmpegNative.AVPicture*) _pCurrentFrame, pOutputData, _pixelFormat, width, height);
}
}
public VideoConverter(FFmpegNative.AVPixelFormat pixelFormat)
{
_pixelFormat = pixelFormat;
}
