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libavformat/mxfenc: added support mxf opatom audio muxing

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Previous version Reviewed-by: Tomas Härdin <tomas.hardin@codemill.se>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Mark Reid 2015-04-11 17:18:13 -07:00 committed by Michael Niedermayer
parent a202fe00ab
commit 415f1fab8d
1 changed files with 85 additions and 17 deletions
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102
libavformat/mxfenc.c
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@ -313,6 +313,7 @@ typedef struct MXFContext {
uint8_t umid[16]; ///< unique material identifier
int channel_count;
uint32_t tagged_value_count;
AVRational audio_edit_rate;
} MXFContext;
static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
@ -781,8 +782,14 @@ static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSe
avio_write(pb, sc->track_essence_element_key + 12, 4);
mxf_write_local_tag(pb, 8, 0x4B01);
avio_wb32(pb, mxf->time_base.den);
avio_wb32(pb, mxf->time_base.num);
if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer){
avio_wb32(pb, mxf->tc.rate.num);
avio_wb32(pb, mxf->tc.rate.den);
} else {
avio_wb32(pb, mxf->time_base.den);
avio_wb32(pb, mxf->time_base.num);
}
// write origin
mxf_write_local_tag(pb, 8, 0x4B02);
@ -811,7 +818,12 @@ static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
// write duration
mxf_write_local_tag(pb, 8, 0x0202);
avio_wb64(pb, mxf->duration);
if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codec->codec_type == AVMEDIA_TYPE_AUDIO){
avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
} else {
avio_wb64(pb, mxf->duration);
}
}
static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
@ -1090,8 +1102,17 @@ static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, con
AVIOContext *pb = s->pb;
MXFContext *mxf = s->priv_data;
int show_warnings = !mxf->footer_partition_offset;
int duration_size = 0;
mxf_write_generic_desc(s, st, key, size+5+12+8+8);
if (s->oformat == &ff_mxf_opatom_muxer)
duration_size = 12;
mxf_write_generic_desc(s, st, key, size+duration_size+5+12+8+8);
if (duration_size > 0){
mxf_write_local_tag(pb, 8, 0x3002);
avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
}
// audio locked
mxf_write_local_tag(pb, 1, 0x3D02);
@ -1114,7 +1135,7 @@ static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, con
av_log(s, AV_LOG_WARNING, "d10_channelcount shall be set to 4 or 8 : the output will not comply to MXF D-10 specs\n");
avio_wb32(pb, mxf->channel_count);
} else {
if (show_warnings && mxf->channel_count != -1)
if (show_warnings && mxf->channel_count != -1 && s->oformat != &ff_mxf_opatom_muxer)
av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");
avio_wb32(pb, st->codec->channels);
}
@ -1963,6 +1984,19 @@ static void mxf_gen_umid(AVFormatContext *s)
mxf->instance_number = seed & 0xFFFFFF;
}
static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational rate)
{
MXFContext *mxf = s->priv_data;
AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
if (!tcr)
tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
if (tcr)
return av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
else
return av_timecode_init(&mxf->tc, rate, 0, 0, s);
}
static int mxf_write_header(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
@ -1971,7 +2005,6 @@ static int mxf_write_header(AVFormatContext *s)
const MXFSamplesPerFrame *spf = NULL;
AVDictionaryEntry *t;
int64_t timestamp = 0;
AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
if (!s->nb_streams)
return -1;
@ -1988,7 +2021,7 @@ static int mxf_write_header(AVFormatContext *s)
return AVERROR(ENOMEM);
st->priv_data = sc;
if ((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) {
if (((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {
av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
return -1;
}
@ -2008,14 +2041,9 @@ static int mxf_write_header(AVFormatContext *s)
mxf->time_base = spf->time_base;
rate = av_inv_q(mxf->time_base);
avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
if (!tcr)
tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
if (tcr)
ret = av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
else
ret = av_timecode_init(&mxf->tc, rate, 0, 0, s);
if (ret < 0)
if((ret = mxf_init_timecode(s, st, rate)) < 0)
return ret;
sc->video_bit_rate = st->codec->bit_rate ? st->codec->bit_rate : st->codec->rc_max_rate;
if (s->oformat == &ff_mxf_d10_muxer) {
if (sc->video_bit_rate == 50000000) {
@ -2055,8 +2083,35 @@ static int mxf_write_header(AVFormatContext *s)
av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
}
sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
} else
mxf->slice_count = 1;
} else if (s->oformat == &ff_mxf_opatom_muxer) {
AVRational tbc = av_inv_q(mxf->audio_edit_rate);
if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");
return AVERROR_PATCHWELCOME;
}
if (st->codec->channels != 1) {
av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");
return AVERROR(EINVAL);
}
spf = ff_mxf_get_samples_per_frame(s, tbc);
if (!spf){
av_log(s, AV_LOG_ERROR, "Unsupported timecode frame rate %d/%d\n", tbc.den, tbc.num);
return AVERROR(EINVAL);
}
mxf->time_base = st->time_base;
if((ret = mxf_init_timecode(s, st, av_inv_q(spf->time_base))) < 0)
return ret;
mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
sc->index = 2;
} else {
mxf->slice_count = 1;
}
}
if (!sc->index) {
@ -2270,7 +2325,6 @@ static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEn
mxf->edit_units_count++;
avio_write(pb, pkt->data, pkt->size);
mxf->body_offset += pkt->size;
avio_flush(pb);
return 0;
@ -2549,6 +2603,19 @@ static const AVClass mxf_d10_muxer_class = {
.version = LIBAVUTIL_VERSION_INT,
};
static const AVOption opatom_options[] = {
{ "mxf_audio_edit_rate", "Audio edit rate for timecode",
offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
{ NULL },
};
static const AVClass mxf_opatom_muxer_class = {
.class_name = "MXF-OPAtom muxer",
.item_name = av_default_item_name,
.option = opatom_options,
.version = LIBAVUTIL_VERSION_INT,
};
AVOutputFormat ff_mxf_muxer = {
.name = "mxf",
.long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
@ -2592,4 +2659,5 @@ AVOutputFormat ff_mxf_opatom_muxer = {
.write_trailer = mxf_write_footer,
.flags = AVFMT_NOTIMESTAMPS,
.interleave_packet = mxf_interleave,
.priv_class = &mxf_opatom_muxer_class,
};