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mpegtsenc: Support LATM packetization for AAC

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This adds the avoption mpegts_flags and converts the existing
resend_headers option into a flag, keeping the old option as
fallback for now.

Signed-off-by: Jindrich Makovicka <makovick@gmail.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Jindrich Makovicka 2012-06-01 10:42:48 +02:00 committed by Martin Storsjö
parent 485d3ea064
commit 2439bd8681
2 changed files with 29 additions and 6 deletions
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2
configure vendored
View File

@ -1457,7 +1457,7 @@ matroska_demuxer_suggest="zlib bzlib"
mov_demuxer_suggest="zlib"
mp3_demuxer_select="mpegaudio_parser"
mp4_muxer_select="mov_muxer"
mpegts_muxer_select="adts_muxer"
mpegts_muxer_select="adts_muxer latm_muxer"
mpegtsraw_demuxer_select="mpegts_demuxer"
mxf_d10_muxer_select="mxf_muxer"
ogg_demuxer_select="golomb"

33
libavformat/mpegtsenc.c
View File

@ -76,7 +76,11 @@ typedef struct MpegTSWrite {
int pmt_start_pid;
int start_pid;
int reemit_pat_pmt;
int reemit_pat_pmt; // backward compatibility
#define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
#define MPEGTS_FLAG_AAC_LATM 0x02
int flags;
} MpegTSWrite;
/* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
@ -97,6 +101,15 @@ static const AVOption options[] = {
{ "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",
offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT, {DEFAULT_PES_PAYLOAD_SIZE}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_flags", "MPEG-TS muxing flags", offsetof(MpegTSWrite, flags), AV_OPT_TYPE_FLAGS, {.dbl = 0}, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
{ "resend_headers", "Reemit PAT/PMT before writing the next packet",
0, AV_OPT_TYPE_CONST, {.dbl = MPEGTS_FLAG_REEMIT_PAT_PMT}, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags"},
{ "latm", "Use LATM packetization for AAC",
0, AV_OPT_TYPE_CONST, {.dbl = MPEGTS_FLAG_AAC_LATM}, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags"},
// backward compatibility
{ "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 },
@ -239,7 +252,7 @@ static void mpegts_write_pat(AVFormatContext *s)
static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
{
// MpegTSWrite *ts = s->priv_data;
MpegTSWrite *ts = s->priv_data;
uint8_t data[1012], *q, *desc_length_ptr, *program_info_length_ptr;
int val, stream_type, i;
@ -278,7 +291,7 @@ static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
stream_type = STREAM_TYPE_AUDIO_MPEG1;
break;
case CODEC_ID_AAC:
stream_type = STREAM_TYPE_AUDIO_AAC;
stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM) ? STREAM_TYPE_AUDIO_AAC_LATM : STREAM_TYPE_AUDIO_AAC;
break;
case CODEC_ID_AAC_LATM:
stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
@ -583,7 +596,11 @@ static int mpegts_write_header(AVFormatContext *s)
ret = AVERROR(ENOMEM);
goto fail;
}
ts_st->amux->oformat = av_guess_format("adts", NULL, NULL);
ts_st->amux->oformat = av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts", NULL, NULL);
if (!ts_st->amux->oformat) {
ret = AVERROR(EINVAL);
goto fail;
}
ast = avformat_new_stream(ts_st->amux, NULL);
ret = avcodec_copy_context(ast->codec, st->codec);
if (ret != 0)
@ -998,9 +1015,15 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
int64_t dts = AV_NOPTS_VALUE, pts = AV_NOPTS_VALUE;
if (ts->reemit_pat_pmt) {
av_log(s, AV_LOG_WARNING, "resend_headers option is deprecated, use -mpegts_flags resend_headers\n");
ts->reemit_pat_pmt = 0;
ts->flags |= MPEGTS_FLAG_REEMIT_PAT_PMT;
}
if (ts->flags & MPEGTS_FLAG_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;
ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
}
if (pkt->pts != AV_NOPTS_VALUE)