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move pcr/sdt/pat period computation after ts->mux_rate is set, patch by Mike Scheutzow, scheutzow at alcatel-lucent dot com

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Originally committed as revision 21198 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Mike Scheutzow 2010-01-13 20:30:55 +00:00 committed by Baptiste Coudurier
parent 6b18a3f5ba
commit 49f6fd8f3f
1 changed files with 10 additions and 9 deletions
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19
libavformat/mpegtsenc.c
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@ -448,15 +448,6 @@ static int mpegts_write_header(AVFormatContext *s)
service->pcr_pid = ts_st->pid;
}
if (total_bit_rate <= 8 * 1024)
total_bit_rate = 8 * 1024;
service->pcr_packet_period = (total_bit_rate * PCR_RETRANS_TIME) /
(TS_PACKET_SIZE * 8 * 1000);
ts->sdt_packet_period = (total_bit_rate * SDT_RETRANS_TIME) /
(TS_PACKET_SIZE * 8 * 1000);
ts->pat_packet_period = (total_bit_rate * PAT_RETRANS_TIME) /
(TS_PACKET_SIZE * 8 * 1000);
ts->mux_rate = 1; // avoid div by 0
/* write info at the start of the file, so that it will be fast to
@ -471,6 +462,9 @@ static int mpegts_write_header(AVFormatContext *s)
}
pat_pmt_size = url_ftell(s->pb) - pos;
if (total_bit_rate <= 8 * 1024)
total_bit_rate = 8 * 1024;
total_bit_rate +=
total_bit_rate * 4 / (TS_PACKET_SIZE-4) + /* TS header size */
1000 * 8 * sdt_size / PAT_RETRANS_TIME + /* SDT size */
@ -485,6 +479,13 @@ static int mpegts_write_header(AVFormatContext *s)
else
ts->mux_rate = total_bit_rate;
service->pcr_packet_period = (ts->mux_rate * PCR_RETRANS_TIME) /
(TS_PACKET_SIZE * 8 * 1000);
ts->sdt_packet_period = (ts->mux_rate * SDT_RETRANS_TIME) /
(TS_PACKET_SIZE * 8 * 1000);
ts->pat_packet_period = (ts->mux_rate * PAT_RETRANS_TIME) /
(TS_PACKET_SIZE * 8 * 1000);
// output a PCR as soon as possible
service->pcr_packet_count = service->pcr_packet_period;