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