static int dvd_file_read(void *h, uint8_t* buf, int size)
{
if(interrupt_cb(NULL))
return -1;
XFILE::CFile *pFile = (XFILE::CFile *)h;
return pFile->Read(buf, size);
}
static int read_callback(void *h, uint8_t* buf, int size)
{
if(interrupt_cb(NULL))
return -1;
XFILE::File *pFile = (XFILE::File *)h;
return pFile->Read(buf, size);
}
static offset_t dvd_file_seek(void *h, offset_t pos, int whence)
{
if(interrupt_cb(NULL))
return -1;
XFILE::CFile *pFile = (XFILE::CFile *)h;
if(whence == AVSEEK_SIZE)
return pFile->GetLength();
else
return pFile->Seek(pos, whence & ~AVSEEK_FORCE);
}
OMXPacket *OMXReader::Read()
{
AVPacket pkt;
OMXPacket *m_omx_pkt = NULL;
int result = -1;
if(!m_pFormatContext || m_eof)
return NULL;
Lock();
// assume we are not eof
if(m_pFormatContext->pb)
m_pFormatContext->pb->eof_reached = 0;
// keep track if ffmpeg doesn't always set these
pkt.size = 0;
pkt.data = NULL;
pkt.stream_index = MAX_OMX_STREAMS;
RESET_TIMEOUT(1);
result = m_dllAvFormat.av_read_frame(m_pFormatContext, &pkt);
if (result < 0)
{
m_eof = true;
//FlushRead();
//m_dllAvCodec.av_free_packet(&pkt);
UnLock();
return NULL;
}
if (pkt.size < 0 || pkt.stream_index >= MAX_OMX_STREAMS || interrupt_cb(NULL))
{
// XXX, in some cases ffmpeg returns a negative packet size
if(m_pFormatContext->pb && !m_pFormatContext->pb->eof_reached)
{
CLog::Log(LOGERROR, "OMXReader::Read no valid packet");
//FlushRead();
}
m_dllAvCodec.av_free_packet(&pkt);
m_eof = true;
UnLock();
return NULL;
}
AVStream *pStream = m_pFormatContext->streams[pkt.stream_index];
/* only read packets for active streams */
/*
if(!IsActive(pkt.stream_index))
{
m_dllAvCodec.av_free_packet(&pkt);
UnLock();
return NULL;
}
*/
// lavf sometimes bugs out and gives 0 dts/pts instead of no dts/pts
// since this could only happens on initial frame under normal
// circomstances, let's assume it is wrong all the time
#if 0
if(pkt.dts == 0)
pkt.dts = AV_NOPTS_VALUE;
if(pkt.pts == 0)
pkt.pts = AV_NOPTS_VALUE;
#endif
if(m_bMatroska && pStream->codec && pStream->codec->codec_type == AVMEDIA_TYPE_VIDEO)
{ // matroska can store different timestamps
// for different formats, for native stored
// stuff it is pts, but for ms compatibility
// tracks, it is really dts. sadly ffmpeg
// sets these two timestamps equal all the
// time, so we select it here instead
if(pStream->codec->codec_tag == 0)
pkt.dts = AV_NOPTS_VALUE;
else
pkt.pts = AV_NOPTS_VALUE;
}
// we need to get duration slightly different for matroska embedded text subtitels
if(m_bMatroska && pStream->codec->codec_id == AV_CODEC_ID_SUBRIP && pkt.convergence_duration != 0)
pkt.duration = pkt.convergence_duration;
if(m_bAVI && pStream->codec && pStream->codec->codec_type == AVMEDIA_TYPE_VIDEO)
{
// AVI's always have borked pts, specially if m_pFormatContext->flags includes
// AVFMT_FLAG_GENPTS so always use dts
pkt.pts = AV_NOPTS_VALUE;
}
m_omx_pkt = AllocPacket(pkt.size);
/* oom error allocation av packet */
if(!m_omx_pkt)
{
m_eof = true;
m_dllAvCodec.av_free_packet(&pkt);
UnLock();
return NULL;
}
m_omx_pkt->codec_type = pStream->codec->codec_type;
/* copy content into our own packet */
m_omx_pkt->size = pkt.size;
if (pkt.data)
memcpy(m_omx_pkt->data, pkt.data, m_omx_pkt->size);
m_omx_pkt->stream_index = pkt.stream_index;
GetHints(pStream, &m_omx_pkt->hints);
m_omx_pkt->dts = ConvertTimestamp(pkt.dts, pStream->time_base.den, pStream->time_base.num);
m_omx_pkt->pts = ConvertTimestamp(pkt.pts, pStream->time_base.den, pStream->time_base.num);
m_omx_pkt->duration = DVD_SEC_TO_TIME((double)pkt.duration * pStream->time_base.num / pStream->time_base.den);
// used to guess streamlength
if (m_omx_pkt->dts != DVD_NOPTS_VALUE && (m_omx_pkt->dts > m_iCurrentPts || m_iCurrentPts == DVD_NOPTS_VALUE))
m_iCurrentPts = m_omx_pkt->dts;
// check if stream has passed full duration, needed for live streams
if(pkt.dts != (int64_t)AV_NOPTS_VALUE)
{
int64_t duration;
duration = pkt.dts;
if(pStream->start_time != (int64_t)AV_NOPTS_VALUE)
duration -= pStream->start_time;
if(duration > pStream->duration)
{
pStream->duration = duration;
duration = m_dllAvUtil.av_rescale_rnd(pStream->duration, (int64_t)pStream->time_base.num * AV_TIME_BASE,
pStream->time_base.den, AV_ROUND_NEAR_INF);
if ((m_pFormatContext->duration == (int64_t)AV_NOPTS_VALUE)
|| (m_pFormatContext->duration != (int64_t)AV_NOPTS_VALUE && duration > m_pFormatContext->duration))
m_pFormatContext->duration = duration;
}
}
m_dllAvCodec.av_free_packet(&pkt);
UnLock();
return m_omx_pkt;
}
