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mpegtsenc: Add an AVOption for forcing a new PAT/PMT/SDT to be written

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When segmenting the output from the mpegts muxer, one can
now set this option when cutting to a new segment, to make sure
the next segment starts with PAT/PMT/SDT.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö
2012-01-29 02:12:06 +02:00
parent 3cac475655
commit ddf422803b
1 changed files with 10 additions and 0 deletions
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10
libavformat/mpegtsenc.c
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@@ -76,6 +76,8 @@ typedef struct MpegTSWrite {
int pmt_start_pid; int pmt_start_pid;
int start_pid; int start_pid;
int reemit_pat_pmt;
} MpegTSWrite; } MpegTSWrite;
/* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */ /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
@@ -96,6 +98,8 @@ static const AVOption options[] = {
{ "muxrate", NULL, offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT, {1}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM}, { "muxrate", NULL, offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT, {1}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "pes_payload_size", "Minimum PES packet payload in bytes", { "pes_payload_size", "Minimum PES packet payload in bytes",
offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT, {DEFAULT_PES_PAYLOAD_SIZE}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM}, offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT, {DEFAULT_PES_PAYLOAD_SIZE}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "resend_headers", "Reemit PAT/PMT before writing the next packet",
offsetof(MpegTSWrite, reemit_pat_pmt), AV_OPT_TYPE_INT, {0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ NULL }, { NULL },
}; };
@@ -939,6 +943,12 @@ static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
const uint64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE)*2; const uint64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE)*2;
int64_t dts = AV_NOPTS_VALUE, pts = AV_NOPTS_VALUE; int64_t dts = AV_NOPTS_VALUE, pts = AV_NOPTS_VALUE;
if (ts->reemit_pat_pmt) {
ts->pat_packet_count = ts->pat_packet_period - 1;
ts->sdt_packet_count = ts->sdt_packet_period - 1;
ts->reemit_pat_pmt = 0;
}
if (pkt->pts != AV_NOPTS_VALUE) if (pkt->pts != AV_NOPTS_VALUE)
pts = pkt->pts + delay; pts = pkt->pts + delay;
if (pkt->dts != AV_NOPTS_VALUE) if (pkt->dts != AV_NOPTS_VALUE)