public bool TryDecode(ref AVPacket packet, ref AVFrame frame)
{
int gotPicture;
fixed (AVPacket* pPacket = &packet)
fixed (AVFrame* pFrame = &frame)
{
int decodedSize = FFmpegInvoke.avcodec_decode_video2(_pDecodingContext, pFrame, &gotPicture, pPacket);
if (decodedSize < 0)
Trace.TraceWarning("Error while decoding frame.");
}
return gotPicture == 1;
}
public byte[] ConvertFrame(ref AVFrame frame)
{
if (_initialized == false)
Initialize(frame.width, frame.height, (AVPixelFormat)frame.format);
fixed (AVFrame* pFrame = &frame)
fixed (byte* pOutputData = &_outputData[0])
{
byte** pSrcData = &(pFrame)->data_0;
byte** pDstData = &(_pCurrentFrame)->data_0;
_pCurrentFrame->data_0 = pOutputData;
FFmpegInvoke.sws_scale(_pContext, pSrcData, pFrame->linesize, 0, frame.height, pDstData, _pCurrentFrame->linesize);
}
return _outputData;
}
public static extern int avcodec_fill_audio_frame(AVFrame* frame, int nb_channels, AVSampleFormat sample_fmt, byte* buf, int buf_size, int align);
public static extern int avcodec_encode_video(AVCodecContext* avctx, byte* buf, int buf_size, AVFrame* pict);
public static extern int avcodec_decode_audio4(AVCodecContext* avctx, AVFrame* frame, int* got_frame_ptr, AVPacket* avpkt);
public static extern void avcodec_default_release_buffer(AVCodecContext* s, AVFrame* pic);
public static extern void avcodec_get_frame_defaults(AVFrame* frame);
public static extern int av_frame_get_pkt_size(AVFrame* frame);
public static extern long av_frame_get_channel_layout(AVFrame* frame);
public static extern void av_frame_set_pkt_pos(AVFrame* frame, long val);
public static extern long av_frame_get_pkt_pos(AVFrame* frame);
public static extern long av_frame_get_pkt_duration(AVFrame* frame);
public static extern void av_frame_set_best_effort_timestamp(AVFrame* frame, long val);
public static extern long av_frame_get_best_effort_timestamp(AVFrame* frame);
public static extern int av_frame_get_decode_error_flags(AVFrame* frame);
public static extern void av_frame_set_channel_layout(AVFrame* frame, long val);
public static extern void av_frame_set_decode_error_flags(AVFrame* frame, int val);
public static extern int av_frame_get_channels(AVFrame* frame);
public static extern void av_frame_set_pkt_size(AVFrame* frame, int val);
public static extern void av_frame_set_channels(AVFrame* frame, int val);
public static extern void avcodec_free_frame(AVFrame** frame);
public static extern int av_frame_get_sample_rate(AVFrame* frame);
public static extern int avcodec_default_reget_buffer(AVCodecContext* s, AVFrame* pic);
public static extern void av_frame_set_sample_rate(AVFrame* frame, int val);
public static extern int avcodec_decode_video2(AVCodecContext* avctx, AVFrame* picture, int* got_picture_ptr, AVPacket* avpkt);
public static extern AVDictionary* av_frame_get_metadata(AVFrame* frame);
public static extern int avcodec_encode_video2(AVCodecContext* avctx, AVPacket* avpkt, AVFrame* frame, int* got_packet_ptr);
public static extern void av_frame_set_metadata(AVFrame* frame, AVDictionary* val);
public static extern AVRational av_guess_sample_aspect_ratio(AVFormatContext* format, AVStream* stream, AVFrame* frame);
public VideoPacketDecoder(PixelFormat pixelFormat)
{
_pixelFormat = pixelFormat;
_avFrame = new AVFrame();
_avPacket = new AVPacket();
}