diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2016-04-10 19:23:40 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2016-04-24 02:51:50 +0200 |
| commit | ea41ab098711f6bbecd6f88d6e81bc3394abfa68 (patch) | |
| tree | 468d4151f573f83cd0b5d8e216ebe8c158e7f16e /libavformat/mpegts.c | |
| parent | 38433345e5039ed8fa241d41d6a3bdd2dcb8a278 (diff) | |
avformat/mpegts: factor duplicate seek back code into mpegts_resync
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/mpegts.c')
| -rw-r--r-- | libavformat/mpegts.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c index e3de46adf8..5d09266f57 100644 --- a/libavformat/mpegts.c +++ b/libavformat/mpegts.c @@ -2354,11 +2354,14 @@ static void reanalyze(MpegTSContext *ts) { /* XXX: try to find a better synchro over several packets (use * get_packet_size() ?) */ -static int mpegts_resync(AVFormatContext *s) +static int mpegts_resync(AVFormatContext *s, int seekback) { MpegTSContext *ts = s->priv_data; AVIOContext *pb = s->pb; int c, i; + uint64_t pos = avio_tell(pb); + + avio_seek(pb, -FFMIN(seekback, pos), SEEK_CUR); for (i = 0; i < ts->resync_size; i++) { c = avio_r8(pb); @@ -2390,10 +2393,8 @@ static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size, /* check packet sync byte */ if ((*data)[0] != 0x47) { /* find a new packet start */ - uint64_t pos = avio_tell(pb); - avio_seek(pb, -FFMIN(raw_packet_size, pos), SEEK_CUR); - if (mpegts_resync(s) < 0) + if (mpegts_resync(s, raw_packet_size) < 0) return AVERROR(EAGAIN); else continue; @@ -2748,8 +2749,7 @@ static av_unused int64_t mpegts_get_pcr(AVFormatContext *s, int stream_index, if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE) return AV_NOPTS_VALUE; if (buf[0] != 0x47) { - avio_seek(s->pb, -TS_PACKET_SIZE, SEEK_CUR); - if (mpegts_resync(s) < 0) + if (mpegts_resync(s, TS_PACKET_SIZE) < 0) return AV_NOPTS_VALUE; pos = avio_tell(s->pb); continue; |