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Add Opus support to the Ogg muxer. 

Signed-off-by: Diego Biurrun <diego@biurrun.de>
This commit is contained in:
Nathan Caldwell 2012-09-27 02:21:56 -06:00 committed by Diego Biurrun
parent 2a3d82ab46
commit bcc1f7caeb
2 changed files with 52 additions and 6 deletions
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56
libavformat/oggenc.c
View File

@ -336,6 +336,35 @@ static int ogg_build_speex_headers(AVCodecContext *avctx,
return 0;
}
#define OPUS_HEADER_SIZE 19
static int ogg_build_opus_headers(AVCodecContext *avctx,
OGGStreamContext *oggstream, int bitexact,
AVDictionary **m)
{
uint8_t *p;
if (avctx->extradata_size < OPUS_HEADER_SIZE)
return -1;
/* first packet: Opus header */
p = av_mallocz(avctx->extradata_size);
if (!p)
return AVERROR(ENOMEM);
oggstream->header[0] = p;
oggstream->header_len[0] = avctx->extradata_size;
bytestream_put_buffer(&p, avctx->extradata, avctx->extradata_size);
/* second packet: VorbisComment */
p = ogg_write_vorbiscomment(8, bitexact, &oggstream->header_len[1], m, 0);
if (!p)
return AVERROR(ENOMEM);
oggstream->header[1] = p;
bytestream_put_buffer(&p, "OpusTags", 8);
return 0;
}
static int ogg_write_header(AVFormatContext *s)
{
OGGStreamContext *oggstream;
@ -346,13 +375,18 @@ static int ogg_write_header(AVFormatContext *s)
unsigned serial_num = i;
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
if (st->codec->codec_id == AV_CODEC_ID_OPUS)
/* Opus requires a fixed 48kHz clock */
avpriv_set_pts_info(st, 64, 1, 48000);
else
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
avpriv_set_pts_info(st, 64, st->codec->time_base.num, st->codec->time_base.den);
if (st->codec->codec_id != AV_CODEC_ID_VORBIS &&
st->codec->codec_id != AV_CODEC_ID_THEORA &&
st->codec->codec_id != AV_CODEC_ID_SPEEX &&
st->codec->codec_id != AV_CODEC_ID_FLAC) {
st->codec->codec_id != AV_CODEC_ID_FLAC &&
st->codec->codec_id != AV_CODEC_ID_OPUS) {
av_log(s, AV_LOG_ERROR, "Unsupported codec id in stream %d\n", i);
return -1;
}
@ -394,6 +428,15 @@ static int ogg_write_header(AVFormatContext *s)
av_freep(&st->priv_data);
return err;
}
} else if (st->codec->codec_id == AV_CODEC_ID_OPUS) {
int err = ogg_build_opus_headers(st->codec, oggstream,
st->codec->flags & CODEC_FLAG_BITEXACT,
&s->metadata);
if (err) {
av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n");
av_freep(&st->priv_data);
return err;
}
} else {
uint8_t *p;
const char *cstr = st->codec->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora";
@ -490,7 +533,9 @@ static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt)
pframe_count = 0;
}
granule = (oggstream->last_kf_pts<<oggstream->kfgshift) | pframe_count;
} else
} else if (st->codec->codec_id == AV_CODEC_ID_OPUS)
granule = pkt->pts + pkt->duration + av_rescale_q(st->codec->delay, (AVRational){ 1, st->codec->sample_rate }, st->time_base);
else
granule = pkt->pts + pkt->duration;
ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0);
@ -518,7 +563,8 @@ static int ogg_write_trailer(AVFormatContext *s)
AVStream *st = s->streams[i];
OGGStreamContext *oggstream = st->priv_data;
if (st->codec->codec_id == AV_CODEC_ID_FLAC ||
st->codec->codec_id == AV_CODEC_ID_SPEEX) {
st->codec->codec_id == AV_CODEC_ID_SPEEX ||
st->codec->codec_id == AV_CODEC_ID_OPUS) {
av_free(oggstream->header[0]);
}
av_freep(&oggstream->header[1]);
@ -531,7 +577,7 @@ AVOutputFormat ff_ogg_muxer = {
.name = "ogg",
.long_name = NULL_IF_CONFIG_SMALL("Ogg"),
.mime_type = "application/ogg",
.extensions = "ogg,ogv,spx",
.extensions = "ogg,ogv,spx,opus",
.priv_data_size = sizeof(OGGContext),
.audio_codec = AV_CODEC_ID_FLAC,
.video_codec = AV_CODEC_ID_THEORA,

2
libavformat/version.h
View File

@ -31,7 +31,7 @@
#define LIBAVFORMAT_VERSION_MAJOR 54
#define LIBAVFORMAT_VERSION_MINOR 17
#define LIBAVFORMAT_VERSION_MICRO 2
#define LIBAVFORMAT_VERSION_MICRO 3
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \