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Merge commit 'b75a1f9892b5b715397edbf837e4d4cda337907b' 

* commit 'b75a1f9892b5b715397edbf837e4d4cda337907b':
  matroska: Factor out write_track from mkv_write_tracks

Conflicts:
	libavformat/matroskaenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
tags/n2.3
Michael Niedermayer 11 years ago
parent
8365287e61 b75a1f9892
commit
ee78b0c252
1 changed files with 275 additions and 251 deletions
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  1. +275
    -251
      libavformat/matroskaenc.c

+ 275
- 251
libavformat/matroskaenc.c View File

@@ -572,6 +572,45 @@ static void get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec,
*output_sample_rate = mp4ac.ext_sample_rate; *output_sample_rate = mp4ac.ext_sample_rate;
} }


static int mkv_write_native_codecprivate(AVFormatContext *s,
AVCodecContext *codec,
AVIOContext *dyn_cp)
{
switch (codec->codec_id) {
case AV_CODEC_ID_VORBIS:
case AV_CODEC_ID_THEORA:
return put_xiph_codecpriv(s, dyn_cp, codec);
case AV_CODEC_ID_FLAC:
return put_flac_codecpriv(s, dyn_cp, codec);
case AV_CODEC_ID_WAVPACK:
return put_wv_codecpriv(dyn_cp, codec);
case AV_CODEC_ID_H264:
return ff_isom_write_avcc(dyn_cp, codec->extradata,
codec->extradata_size);
case AV_CODEC_ID_HEVC:
return ff_isom_write_hvcc(dyn_cp, codec->extradata,
codec->extradata_size, 0);
case AV_CODEC_ID_ALAC:
if (codec->extradata_size < 36) {
av_log(s, AV_LOG_ERROR,
"Invalid extradata found, ALAC expects a 36-byte "
"QuickTime atom.");
return AVERROR_INVALIDDATA;
} else
avio_write(dyn_cp, codec->extradata + 12,
codec->extradata_size - 12);
break;
default:
if (codec->codec_id == AV_CODEC_ID_PRORES &&
ff_codec_get_id(ff_codec_movvideo_tags, codec->codec_tag) == AV_CODEC_ID_PRORES) {
avio_wl32(dyn_cp, codec->codec_tag);
} else if (codec->extradata_size && codec->codec_id != AV_CODEC_ID_TTA)
avio_write(dyn_cp, codec->extradata, codec->extradata_size);
}

return 0;
}

static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb,
AVCodecContext *codec, int native_id, AVCodecContext *codec, int native_id,
int qt_id) int qt_id)
@@ -585,33 +624,7 @@ static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb,
return ret; return ret;


if (native_id) { if (native_id) {
if (codec->codec_id == AV_CODEC_ID_VORBIS ||
codec->codec_id == AV_CODEC_ID_THEORA)
ret = put_xiph_codecpriv(s, dyn_cp, codec);
else if (codec->codec_id == AV_CODEC_ID_FLAC)
ret = put_flac_codecpriv(s, dyn_cp, codec);
else if (codec->codec_id == AV_CODEC_ID_WAVPACK)
ret = put_wv_codecpriv(dyn_cp, codec);
else if (codec->codec_id == AV_CODEC_ID_H264)
ret = ff_isom_write_avcc(dyn_cp, codec->extradata,
codec->extradata_size);
else if (codec->codec_id == AV_CODEC_ID_HEVC)
ret = ff_isom_write_hvcc(dyn_cp, codec->extradata,
codec->extradata_size, 0);
else if (codec->codec_id == AV_CODEC_ID_ALAC) {
if (codec->extradata_size < 36) {
av_log(s, AV_LOG_ERROR,
"Invalid extradata found, ALAC expects a 36-byte "
"QuickTime atom.");
ret = AVERROR_INVALIDDATA;
} else
avio_write(dyn_cp, codec->extradata + 12,
codec->extradata_size - 12);
} else if (codec->codec_id == AV_CODEC_ID_PRORES &&
ff_codec_get_id(ff_codec_movvideo_tags, codec->codec_tag) == AV_CODEC_ID_PRORES) {
avio_wl32(dyn_cp, codec->codec_tag);
} else if (codec->extradata_size && codec->codec_id != AV_CODEC_ID_TTA)
avio_write(dyn_cp, codec->extradata, codec->extradata_size);
ret = mkv_write_native_codecprivate(s, codec, dyn_cp);
} else if (codec->codec_type == AVMEDIA_TYPE_VIDEO) { } else if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
if (qt_id) { if (qt_id) {
if (!codec->codec_tag) if (!codec->codec_tag)
@@ -667,258 +680,269 @@ static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb,
return ret; return ret;
} }


static int mkv_write_tracks(AVFormatContext *s)
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
int i, AVIOContext *pb, int default_stream_exists)
{ {
MatroskaMuxContext *mkv = s->priv_data;
AVIOContext *pb = s->pb;
ebml_master tracks;
int i, j, ret, default_stream_exists = 0;
AVStream *st = s->streams[i];
AVCodecContext *codec = st->codec;
ebml_master subinfo, track;
int native_id = 0;
int qt_id = 0;
int bit_depth = av_get_bits_per_sample(codec->codec_id);
int sample_rate = codec->sample_rate;
int output_sample_rate = 0;
int display_width_div = 1;
int display_height_div = 1;
int j, ret;
AVDictionaryEntry *tag;


ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TRACKS, avio_tell(pb));
if (ret < 0)
return ret;
// ms precision is the de-facto standard timescale for mkv files
avpriv_set_pts_info(st, 64, 1, 1000);


tracks = start_ebml_master(pb, MATROSKA_ID_TRACKS, 0);
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT;
if (codec->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
mkv->have_attachments = 1;
return 0;
} }
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
AVCodecContext *codec = st->codec;
ebml_master subinfo, track;
int native_id = 0;
int qt_id = 0;
int bit_depth = av_get_bits_per_sample(codec->codec_id);
int sample_rate = codec->sample_rate;
int output_sample_rate = 0;
int display_width_div = 1;
int display_height_div = 1;
AVDictionaryEntry *tag;

// ms precision is the de-facto standard timescale for mkv files
avpriv_set_pts_info(st, 64, 1, 1000);

if (codec->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
mkv->have_attachments = 1;
continue;
}


if (!bit_depth && codec->codec_id != AV_CODEC_ID_ADPCM_G726)
bit_depth = av_get_bytes_per_sample(codec->sample_fmt) << 3;
if (!bit_depth)
bit_depth = codec->bits_per_coded_sample;
if (codec->codec_id == AV_CODEC_ID_AAC)
get_aac_sample_rates(s, codec, &sample_rate, &output_sample_rate);
track = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0);
put_ebml_uint (pb, MATROSKA_ID_TRACKNUMBER,
mkv->is_dash ? mkv->dash_track_number : i + 1);
put_ebml_uint (pb, MATROSKA_ID_TRACKUID,
mkv->is_dash ? mkv->dash_track_number : i + 1);
put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet)
if ((tag = av_dict_get(st->metadata, "title", NULL, 0)))
put_ebml_string(pb, MATROSKA_ID_TRACKNAME, tag->value);
tag = av_dict_get(st->metadata, "language", NULL, 0);
if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT) {
put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag ? tag->value:"und");
} else if (tag && tag->value) {
put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag->value);
}
if (!bit_depth && codec->codec_id != AV_CODEC_ID_ADPCM_G726)
bit_depth = av_get_bytes_per_sample(codec->sample_fmt) << 3;
if (!bit_depth)
bit_depth = codec->bits_per_coded_sample;

if (codec->codec_id == AV_CODEC_ID_AAC)
get_aac_sample_rates(s, codec, &sample_rate, &output_sample_rate);

track = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0);
put_ebml_uint (pb, MATROSKA_ID_TRACKNUMBER,
mkv->is_dash ? mkv->dash_track_number : i + 1);
put_ebml_uint (pb, MATROSKA_ID_TRACKUID,
mkv->is_dash ? mkv->dash_track_number : i + 1);
put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet)

if ((tag = av_dict_get(st->metadata, "title", NULL, 0)))
put_ebml_string(pb, MATROSKA_ID_TRACKNAME, tag->value);
tag = av_dict_get(st->metadata, "language", NULL, 0);
if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT) {
put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag ? tag->value:"und");
} else if (tag && tag->value) {
put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag->value);
}


// The default value for TRACKFLAGDEFAULT is 1, so add element
// if we need to clear it.
if (default_stream_exists && !(st->disposition & AV_DISPOSITION_DEFAULT))
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGDEFAULT, !!(st->disposition & AV_DISPOSITION_DEFAULT));

if (st->disposition & AV_DISPOSITION_FORCED)
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGFORCED, 1);

if (mkv->mode == MODE_WEBM && codec->codec_id == AV_CODEC_ID_WEBVTT) {
const char *codec_id;
if (st->disposition & AV_DISPOSITION_CAPTIONS) {
codec_id = "D_WEBVTT/CAPTIONS";
native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
} else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) {
codec_id = "D_WEBVTT/DESCRIPTIONS";
native_id = MATROSKA_TRACK_TYPE_METADATA;
} else if (st->disposition & AV_DISPOSITION_METADATA) {
codec_id = "D_WEBVTT/METADATA";
native_id = MATROSKA_TRACK_TYPE_METADATA;
} else {
codec_id = "D_WEBVTT/SUBTITLES";
native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
}
put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id);
// The default value for TRACKFLAGDEFAULT is 1, so add element
// if we need to clear it.
if (default_stream_exists && !(st->disposition & AV_DISPOSITION_DEFAULT))
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGDEFAULT, !!(st->disposition & AV_DISPOSITION_DEFAULT));

if (st->disposition & AV_DISPOSITION_FORCED)
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGFORCED, 1);

if (mkv->mode == MODE_WEBM && codec->codec_id == AV_CODEC_ID_WEBVTT) {
const char *codec_id;
if (st->disposition & AV_DISPOSITION_CAPTIONS) {
codec_id = "D_WEBVTT/CAPTIONS";
native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
} else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) {
codec_id = "D_WEBVTT/DESCRIPTIONS";
native_id = MATROSKA_TRACK_TYPE_METADATA;
} else if (st->disposition & AV_DISPOSITION_METADATA) {
codec_id = "D_WEBVTT/METADATA";
native_id = MATROSKA_TRACK_TYPE_METADATA;
} else { } else {
// look for a codec ID string specific to mkv to use,
// if none are found, use AVI codes
for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
if (ff_mkv_codec_tags[j].id == codec->codec_id) {
put_ebml_string(pb, MATROSKA_ID_CODECID, ff_mkv_codec_tags[j].str);
native_id = 1;
break;
}
codec_id = "D_WEBVTT/SUBTITLES";
native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
}
put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id);
} else {
// look for a codec ID string specific to mkv to use,
// if none are found, use AVI codes
for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
if (ff_mkv_codec_tags[j].id == codec->codec_id) {
put_ebml_string(pb, MATROSKA_ID_CODECID, ff_mkv_codec_tags[j].str);
native_id = 1;
break;
} }
} }
}


if (codec->codec_type == AVMEDIA_TYPE_AUDIO && codec->delay && codec->codec_id == AV_CODEC_ID_OPUS) {
// mkv->tracks[i].ts_offset = av_rescale_q(codec->delay,
// (AVRational){ 1, codec->sample_rate },
// st->time_base);
if (codec->codec_type == AVMEDIA_TYPE_AUDIO && codec->delay && codec->codec_id == AV_CODEC_ID_OPUS) {
// mkv->tracks[i].ts_offset = av_rescale_q(codec->delay,
// (AVRational){ 1, codec->sample_rate },
// st->time_base);


put_ebml_uint(pb, MATROSKA_ID_CODECDELAY,
av_rescale_q(codec->delay, (AVRational){ 1, codec->sample_rate },
(AVRational){ 1, 1000000000 }));
}
if (codec->codec_id == AV_CODEC_ID_OPUS) {
put_ebml_uint(pb, MATROSKA_ID_SEEKPREROLL, OPUS_SEEK_PREROLL);
}
put_ebml_uint(pb, MATROSKA_ID_CODECDELAY,
av_rescale_q(codec->delay, (AVRational){ 1, codec->sample_rate },
(AVRational){ 1, 1000000000 }));
}
if (codec->codec_id == AV_CODEC_ID_OPUS) {
put_ebml_uint(pb, MATROSKA_ID_SEEKPREROLL, OPUS_SEEK_PREROLL);
}


if (mkv->mode == MODE_WEBM && !(codec->codec_id == AV_CODEC_ID_VP8 ||
codec->codec_id == AV_CODEC_ID_VP9 ||
codec->codec_id == AV_CODEC_ID_OPUS ||
codec->codec_id == AV_CODEC_ID_VORBIS ||
codec->codec_id == AV_CODEC_ID_WEBVTT)) {
av_log(s, AV_LOG_ERROR,
"Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n");
return AVERROR(EINVAL);
}
if (mkv->mode == MODE_WEBM && !(codec->codec_id == AV_CODEC_ID_VP8 ||
codec->codec_id == AV_CODEC_ID_VP9 ||
codec->codec_id == AV_CODEC_ID_OPUS ||
codec->codec_id == AV_CODEC_ID_VORBIS ||
codec->codec_id == AV_CODEC_ID_WEBVTT)) {
av_log(s, AV_LOG_ERROR,
"Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n");
return AVERROR(EINVAL);
}


switch (codec->codec_type) {
case AVMEDIA_TYPE_VIDEO:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO);

if( st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0
&& 1.0/av_q2d(st->avg_frame_rate) > av_q2d(codec->time_base))
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1E9 / av_q2d(st->avg_frame_rate));
else
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, av_q2d(codec->time_base)*1E9);

if (!native_id &&
ff_codec_get_tag(ff_codec_movvideo_tags, codec->codec_id) &&
(!ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id) ||
codec->codec_id == AV_CODEC_ID_SVQ1 ||
codec->codec_id == AV_CODEC_ID_SVQ3 ||
codec->codec_id == AV_CODEC_ID_CINEPAK))
qt_id = 1;

if (qt_id)
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
else if (!native_id) {
// if there is no mkv-specific codec ID, use VFW mode
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
mkv->tracks[i].write_dts = 1;
}
switch (codec->codec_type) {
case AVMEDIA_TYPE_VIDEO:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO);


subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
// XXX: interlace flag?
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width);
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, codec->height);
if( st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0
&& 1.0/av_q2d(st->avg_frame_rate) > av_q2d(codec->time_base))
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1E9 / av_q2d(st->avg_frame_rate));
else
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, av_q2d(codec->time_base)*1E9);

if (!native_id &&
ff_codec_get_tag(ff_codec_movvideo_tags, codec->codec_id) &&
(!ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id) ||
codec->codec_id == AV_CODEC_ID_SVQ1 ||
codec->codec_id == AV_CODEC_ID_SVQ3 ||
codec->codec_id == AV_CODEC_ID_CINEPAK))
qt_id = 1;

if (qt_id)
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
else if (!native_id) {
// if there is no mkv-specific codec ID, use VFW mode
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
mkv->tracks[i].write_dts = 1;
}


if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
(tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
// save stereo mode flag
uint64_t st_mode = MATROSKA_VIDEO_STEREO_MODE_COUNT;
subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
// XXX: interlace flag?
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width);
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, codec->height);


for (j=0; j<MATROSKA_VIDEO_STEREO_MODE_COUNT; j++)
if (!strcmp(tag->value, ff_matroska_video_stereo_mode[j])){
st_mode = j;
break;
}
if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
(tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
// save stereo mode flag
uint64_t st_mode = MATROSKA_VIDEO_STEREO_MODE_COUNT;


if ((mkv->mode == MODE_WEBM && st_mode > 3 && st_mode != 11)
|| st_mode >= MATROSKA_VIDEO_STEREO_MODE_COUNT) {
av_log(s, AV_LOG_ERROR,
"The specified stereo mode is not valid.\n");
return AVERROR(EINVAL);
} else
put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, st_mode);

switch (st_mode) {
case 1:
case 8:
case 9:
case 11:
display_width_div = 2;
break;
case 2:
case 3:
case 6:
case 7:
display_height_div = 2;
for (j=0; j<MATROSKA_VIDEO_STEREO_MODE_COUNT; j++)
if (!strcmp(tag->value, ff_matroska_video_stereo_mode[j])){
st_mode = j;
break; break;
} }
}


if ((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) ||
(tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) ||
(codec->pix_fmt == AV_PIX_FMT_YUVA420P)) {
put_ebml_uint(pb, MATROSKA_ID_VIDEOALPHAMODE, 1);
if ((mkv->mode == MODE_WEBM && st_mode > 3 && st_mode != 11)
|| st_mode >= MATROSKA_VIDEO_STEREO_MODE_COUNT) {
av_log(s, AV_LOG_ERROR,
"The specified stereo mode is not valid.\n");
return AVERROR(EINVAL);
} else
put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, st_mode);

switch (st_mode) {
case 1:
case 8:
case 9:
case 11:
display_width_div = 2;
break;
case 2:
case 3:
case 6:
case 7:
display_height_div = 2;
break;
} }
}


if (st->sample_aspect_ratio.num) {
int64_t d_width = av_rescale(codec->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
if (d_width > INT_MAX) {
av_log(s, AV_LOG_ERROR, "Overflow in display width\n");
return AVERROR(EINVAL);
}
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div);
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height / display_height_div);
} else if (display_width_div != 1 || display_height_div != 1) {
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , codec->width / display_width_div);
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height / display_height_div);
}
if ((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) ||
(tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) ||
(codec->pix_fmt == AV_PIX_FMT_YUVA420P)) {
put_ebml_uint(pb, MATROSKA_ID_VIDEOALPHAMODE, 1);
}


if (codec->codec_id == AV_CODEC_ID_RAWVIDEO) {
uint32_t color_space = av_le2ne32(codec->codec_tag);
put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space));
}
end_ebml_master(pb, subinfo);
break;

case AVMEDIA_TYPE_AUDIO:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_AUDIO);

if (!native_id)
// no mkv-specific ID, use ACM mode
put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");

subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , codec->channels);
put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);
if (output_sample_rate)
put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
if (bit_depth)
put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth);
end_ebml_master(pb, subinfo);
break;

case AVMEDIA_TYPE_SUBTITLE:
if (!native_id) {
av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", codec->codec_id);
return AVERROR(ENOSYS);
if (st->sample_aspect_ratio.num) {
int64_t d_width = av_rescale(codec->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
if (d_width > INT_MAX) {
av_log(s, AV_LOG_ERROR, "Overflow in display width\n");
return AVERROR(EINVAL);
} }

if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT)
native_id = MATROSKA_TRACK_TYPE_SUBTITLE;

put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, native_id);
break;
default:
av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n");
return AVERROR(EINVAL);
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div);
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height / display_height_div);
} else if (display_width_div != 1 || display_height_div != 1) {
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , codec->width / display_width_div);
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height / display_height_div);
} }


if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT) {
ret = mkv_write_codecprivate(s, pb, codec, native_id, qt_id);
if (ret < 0)
return ret;
if (codec->codec_id == AV_CODEC_ID_RAWVIDEO) {
uint32_t color_space = av_le2ne32(codec->codec_tag);
put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space));
} }
end_ebml_master(pb, subinfo);
break;

case AVMEDIA_TYPE_AUDIO:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_AUDIO);

if (!native_id)
// no mkv-specific ID, use ACM mode
put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");

subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , codec->channels);
put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);
if (output_sample_rate)
put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
if (bit_depth)
put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth);
end_ebml_master(pb, subinfo);
break;

case AVMEDIA_TYPE_SUBTITLE:
if (!native_id) {
av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", codec->codec_id);
return AVERROR(ENOSYS);
}

if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT)
native_id = MATROSKA_TRACK_TYPE_SUBTITLE;

put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, native_id);
break;
default:
av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n");
return AVERROR(EINVAL);
}


end_ebml_master(pb, track);
if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT) {
ret = mkv_write_codecprivate(s, pb, codec, native_id, qt_id);
if (ret < 0)
return ret;
}

end_ebml_master(pb, track);

return 0;
}

static int mkv_write_tracks(AVFormatContext *s)
{
MatroskaMuxContext *mkv = s->priv_data;
AVIOContext *pb = s->pb;
ebml_master tracks;
int i, ret, default_stream_exists = 0;

ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TRACKS, avio_tell(pb));
if (ret < 0)
return ret;

tracks = start_ebml_master(pb, MATROSKA_ID_TRACKS, 0);
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT;
}
for (i = 0; i < s->nb_streams; i++) {
ret = mkv_write_track(s, mkv, i, pb, default_stream_exists);
if (ret < 0)
return ret;
} }
end_ebml_master(pb, tracks); end_ebml_master(pb, tracks);
return 0; return 0;


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