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| author | rcombs <rcombs@rcombs.me> | 2023-01-28 14:19:17 -0600 |
|---|---|---|
| committer | Jan Ekström <jeebjp@gmail.com> | 2023-03-14 22:32:40 +0200 |
| commit | 0da0acdae8e729eecfb2498ac11cb86a7fe3360d (patch) | |
| tree | 6bd51c6b7aa4db090c4ebbd68391b71e30e75d13 /demux | |
| parent | 3eb2dfe2eb782327daf7f5e567bf4f791bc578b8 (diff) | |
| download | mpv-0da0acdae8e729eecfb2498ac11cb86a7fe3360d.tar.bz2 mpv-0da0acdae8e729eecfb2498ac11cb86a7fe3360d.tar.xz | |
demux_mkv: support ARIB captions
Diffstat (limited to 'demux')
| -rw-r--r-- | demux/demux_mkv.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/demux/demux_mkv.c b/demux/demux_mkv.c index 3f0472dae9..c330709d23 100644 --- a/demux/demux_mkv.c +++ b/demux/demux_mkv.c @@ -1831,9 +1831,15 @@ static const char *const mkv_sub_tag[][2] = { { "D_WEBVTT/CAPTIONS", "webvtt-webm"}, { "S_TEXT/WEBVTT", "webvtt"}, { "S_DVBSUB", "dvb_subtitle"}, + { "S_ARIBSUB", "arib_caption"}, {0} }; +static void avcodec_par_destructor(void *p) +{ + avcodec_parameters_free(p); +} + static int demux_mkv_open_sub(demuxer_t *demuxer, mkv_track_t *track) { const char *subtitle_type = NULL; @@ -1862,6 +1868,38 @@ static int demux_mkv_open_sub(demuxer_t *demuxer, mkv_track_t *track) sh->codec->extradata = track->private_data; sh->codec->extradata_size = track->private_size; + if (!strcmp(sh->codec->codec, "arib_caption") && track->private_size >= 3) { + struct AVCodecParameters **lavp = talloc_ptrtype(track, lavp); + + talloc_set_destructor(lavp, avcodec_par_destructor); + + struct AVCodecParameters *lav = *lavp = sh->codec->lav_codecpar = avcodec_parameters_alloc(); + MP_HANDLE_OOM(lav); + + lav->codec_type = AVMEDIA_TYPE_SUBTITLE; + lav->codec_id = AV_CODEC_ID_ARIB_CAPTION; + + int component_tag = track->private_data[0]; + int data_component_id = AV_RB16(track->private_data + 1); + switch (data_component_id) { + case 0x0008: + // [0x30..0x37] are component tags utilized for + // non-mobile captioning service ("profile A"). + if (component_tag >= 0x30 && component_tag <= 0x37) + lav->profile = FF_PROFILE_ARIB_PROFILE_A; + break; + case 0x0012: + // component tag 0x87 signifies a mobile/partial reception + // (1seg) captioning service ("profile C"). + if (component_tag == 0x87) + lav->profile = FF_PROFILE_ARIB_PROFILE_C; + break; + } + if (lav->profile == FF_PROFILE_UNKNOWN) + MP_WARN(demuxer, "ARIB caption profile %02x / %04x not supported.\n", + component_tag, data_component_id); + } + demux_add_sh_stream(demuxer, sh); if (!subtitle_type) |