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| author | Martin Storsjö <martin@martin.st> | 2011-01-01 22:27:16 +0000 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2011-01-01 22:27:16 +0000 |
| commit | 3a1cdcc798fd7cb60ef69d1d010f5d56218c4b3a (patch) | |
| tree | a07de61f687827dc5a3bd9b70cae18e6eefb77f0 /libavformat/rtpdec.c | |
| parent | dfaa9f3cb328f245cc1f9c56145a21c6d6e58f42 (diff) | |
| download | ffmpeg-3a1cdcc798fd7cb60ef69d1d010f5d56218c4b3a.tar.gz | |
rtpdec: Emit timestamps for packets before the first RTCP packet, too
Emitted timestamps in each stream start from 0, for the first received
RTP packet. Once an RTCP packet is received, that one is used for
sync, emitting timestamps that fit seamlessly into the earlier ones.
Originally committed as revision 26187 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat/rtpdec.c')
| -rw-r--r-- | libavformat/rtpdec.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/libavformat/rtpdec.c b/libavformat/rtpdec.c index 77b59a3ff3..700924962e 100644 --- a/libavformat/rtpdec.c +++ b/libavformat/rtpdec.c @@ -123,9 +123,13 @@ static int rtcp_parse_packet(RTPDemuxContext *s, const unsigned char *buf, int l payload_len = (AV_RB16(buf + 2) + 1) * 4; s->last_rtcp_ntp_time = AV_RB64(buf + 8); - if (s->first_rtcp_ntp_time == AV_NOPTS_VALUE) - s->first_rtcp_ntp_time = s->last_rtcp_ntp_time; s->last_rtcp_timestamp = AV_RB32(buf + 16); + if (s->first_rtcp_ntp_time == AV_NOPTS_VALUE) { + s->first_rtcp_ntp_time = s->last_rtcp_ntp_time; + if (!s->base_timestamp) + s->base_timestamp = s->last_rtcp_timestamp; + s->rtcp_ts_offset = s->last_rtcp_timestamp - s->base_timestamp; + } buf += payload_len; len -= payload_len; @@ -440,8 +444,15 @@ static void finalize_packet(RTPDemuxContext *s, AVPacket *pkt, uint32_t timestam delta_timestamp = timestamp - s->last_rtcp_timestamp; /* convert to the PTS timebase */ addend = av_rescale(s->last_rtcp_ntp_time - s->first_rtcp_ntp_time, s->st->time_base.den, (uint64_t)s->st->time_base.num << 32); - pkt->pts = s->range_start_offset + addend + delta_timestamp; + pkt->pts = s->range_start_offset + s->rtcp_ts_offset + addend + + delta_timestamp; + return; } + if (timestamp == RTP_NOTS_VALUE) + return; + if (!s->base_timestamp) + s->base_timestamp = timestamp; + pkt->pts = s->range_start_offset + timestamp - s->base_timestamp; } static int rtp_parse_packet_internal(RTPDemuxContext *s, AVPacket *pkt, |