void CDVDOverlayCodecFFmpeg::Flush()
{
FreeSubtitle(m_Subtitle);
m_SubtitleIndex = -1;
avcodec_flush_buffers(m_pCodecContext);
}
int CDVDOverlayCodecFFmpeg::Decode(BYTE* data, int size, double pts, double duration)
{
if (!m_pCodecContext)
return 1;
int gotsub = 0, len = 0;
FreeSubtitle(m_Subtitle);
try
{
len = m_dllAvCodec.avcodec_decode_subtitle(m_pCodecContext, &m_Subtitle, &gotsub, data, size);
}
catch (win32_exception e)
{
e.writelog("avcodec_decode_subtitle");
return OC_ERROR;
}
if (len < 0)
{
CLog::Log(LOGERROR, "%s - avcodec_decode_subtitle returned failure", __FUNCTION__);
return OC_ERROR;
}
if (len != size)
CLog::Log(LOGWARNING, "%s - avcodec_decode_subtitle didn't consume the full packet", __FUNCTION__);
if (!gotsub)
return OC_BUFFER;
m_SubtitleIndex = 0;
return OC_OVERLAY;
}
void CDVDOverlayCodecFFmpeg::Dispose()
{
if (m_pCodecContext)
{
if (m_pCodecContext->codec) avcodec_close(m_pCodecContext);
av_free(m_pCodecContext);
m_pCodecContext = NULL;
}
FreeSubtitle(m_Subtitle);
}
int CDVDOverlayCodecFFmpeg::Decode(DemuxPacket *pPacket)
{
if (!m_pCodecContext || !pPacket)
return 1;
int gotsub = 0, len = 0;
FreeSubtitle(m_Subtitle);
AVPacket avpkt;
av_init_packet(&avpkt);
avpkt.data = pPacket->pData;
avpkt.size = pPacket->iSize;
avpkt.pts = pPacket->pts == DVD_NOPTS_VALUE ? AV_NOPTS_VALUE : (int64_t)pPacket->pts;
avpkt.dts = pPacket->dts == DVD_NOPTS_VALUE ? AV_NOPTS_VALUE : (int64_t)pPacket->dts;
len = avcodec_decode_subtitle2(m_pCodecContext, &m_Subtitle, &gotsub, &avpkt);
if (len < 0)
{
CLog::Log(LOGERROR, "%s - avcodec_decode_subtitle returned failure", __FUNCTION__);
Flush();
return OC_ERROR;
}
if (len != avpkt.size)
CLog::Log(LOGWARNING, "%s - avcodec_decode_subtitle didn't consume the full packet", __FUNCTION__);
if (!gotsub)
return OC_BUFFER;
double pts_offset = 0.0;
if (m_pCodecContext->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && m_Subtitle.format == 0)
{
// for pgs subtitles the packet pts of the end_segments are wrong
// instead use the subtitle pts to calc the offset here
// see http://git.videolan.org/?p=ffmpeg.git;a=commit;h=2939e258f9d1fff89b3b68536beb931b54611585
if (m_Subtitle.pts != AV_NOPTS_VALUE && pPacket->pts != DVD_NOPTS_VALUE)
{
pts_offset = m_Subtitle.pts - pPacket->pts ;
}
}
m_StartTime = DVD_MSEC_TO_TIME(m_Subtitle.start_display_time);
m_StopTime = DVD_MSEC_TO_TIME(m_Subtitle.end_display_time);
//adapt start and stop time to our packet pts
bool dummy = false;
CDVDOverlayCodec::GetAbsoluteTimes(m_StartTime, m_StopTime, pPacket, dummy, pts_offset);
m_SubtitleIndex = 0;
return OC_OVERLAY;
}
void CDVDOverlayCodecFFmpeg::Dispose()
{
if (m_pCodecContext)
{
if (m_pCodecContext->codec) m_dllAvCodec.avcodec_close(m_pCodecContext);
m_dllAvUtil.av_free(m_pCodecContext);
m_pCodecContext = NULL;
}
FreeSubtitle(m_Subtitle);
m_dllAvCodec.Unload();
m_dllAvUtil.Unload();
}
void CDVDOverlayCodecFFmpeg::Flush()
{
FreeSubtitle(m_Subtitle);
m_SubtitleIndex = -1;
try {
m_dllAvCodec.avcodec_flush_buffers(m_pCodecContext);
} catch (win32_exception e) {
e.writelog(__FUNCTION__);
}
}
