void FFMpegDemuxer::seek(int DestFrame, int StartTimestamp, int StreamIndex)
{
AVStream * pVStream = m_pFormatContext->streams[StreamIndex];
#if LIBAVFORMAT_BUILD <= 4616
av_seek_frame(m_pFormatContext, StreamIndex,
int((double(DestFrame)*1000000*1000)/pVStream->r_frame_rate+StartTimestamp));
#else
#if LIBAVFORMAT_BUILD < ((49<<16)+(0<<8)+0)
av_seek_frame(m_pFormatContext, StreamIndex,
int((double(DestFrame)*1000000*1000)/pVStream->r_frame_rate+StartTimestamp), 0);
#else
double framerate = (pVStream->r_frame_rate.num)/pVStream->r_frame_rate.den;
double FrameStartOffset = framerate*StartTimestamp/1000.0;
av_seek_frame(m_pFormatContext, -1,
int((double(DestFrame+FrameStartOffset)*AV_TIME_BASE)/framerate),
AVSEEK_FLAG_BACKWARD);
#endif
#endif
clearPacketCache();
map<int, PacketList>::iterator it;
for (it=m_PacketLists.begin(); it != m_PacketLists.end(); ++it) {
int CurStreamIndex = it->first;
AVStream * pStream = m_pFormatContext->streams[CurStreamIndex];
avcodec_flush_buffers(pStream->codec);
}
}
Demux::~Demux()
{
clearPacketCache();
}
FFMpegDemuxer::~FFMpegDemuxer()
{
clearPacketCache();
ObjectCounter::get()->decRef(&typeid(*this));
}
void FFMpegDemuxer::seek(float destTime)
{
av_seek_frame(m_pFormatContext, -1, (long long)(destTime*AV_TIME_BASE),
AVSEEK_FLAG_BACKWARD);
clearPacketCache();
}
