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avformat/mpegenc - accept PCM_DVD streams 

PCM_S16BE stream packets in MPEG-PS have a 3-byte header and
are recognized as PCM_DVD by the demuxer which prevents their
correct remuxing in MPEG-1/2 PS.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Gyan Doshi 2018-02-07 18:05:08 +05:30 committed by Michael Niedermayer
parent 8a8d0b319a
commit f0809bc0fa
1 changed files with 21 additions and 2 deletions
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23
libavformat/mpegenc.c
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@ -353,7 +353,8 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
if (!s->is_mpeg2 &&
(st->codecpar->codec_id == AV_CODEC_ID_AC3 ||
st->codecpar->codec_id == AV_CODEC_ID_DTS ||
st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE))
st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE ||
st->codecpar->codec_id == AV_CODEC_ID_PCM_DVD))
av_log(ctx, AV_LOG_WARNING,
"%s in MPEG-1 system streams is not widely supported, "
"consider using the vob or the dvd muxer "
@ -363,7 +364,12 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
stream->id = ac3_id++;
} else if (st->codecpar->codec_id == AV_CODEC_ID_DTS) {
stream->id = dts_id++;
} else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE) {
} else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE ||
st->codecpar->codec_id == AV_CODEC_ID_PCM_DVD) {
if (st->codecpar->bits_per_coded_sample != 16) {
av_log(ctx, AV_LOG_ERROR, "Only 16 bit LPCM streams can be muxed.\n");
goto fail;
}
stream->id = lpcm_id++;
for (j = 0; j < 4; j++) {
if (lpcm_freq_tab[j] == st->codecpar->sample_rate)
@ -1150,6 +1156,19 @@ static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt)
return AVERROR(ENOMEM);
pkt_desc->pts = pts;
pkt_desc->dts = dts;
if (st->codecpar->codec_id == AV_CODEC_ID_PCM_DVD) {
if (size < 3) {
av_log(ctx, AV_LOG_ERROR, "Invalid packet size %d\n", size);
return AVERROR(EINVAL);
}
/* Skip first 3 bytes of packet data, which comprise PCM header
and will be written fresh by this muxer. */
buf += 3;
size -= 3;
}
pkt_desc->unwritten_size =
pkt_desc->size = size;
if (!stream->predecode_packet)