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+ } else if (codec_id == AV_CODEC_ID_ARIB_CAPTION && track->codec_priv.size == 3) { + int component_tag = track->codec_priv.data[0]; + int data_component_id = AV_RB16(track->codec_priv.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) { + st->codecpar->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) { + st->codecpar->profile = FF_PROFILE_ARIB_PROFILE_C; + } + break; + default: + break; + } + + if (st->codecpar->profile == FF_PROFILE_UNKNOWN) + av_log(matroska->ctx, AV_LOG_WARNING, + "Unknown ARIB caption profile utilized: %02x / %04x\n", + component_tag, data_component_id); + + track->codec_priv.size = 0; } track->codec_priv.size -= extradata_offset; diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c index 2deb4284e8..67cfec761a 100644 --- a/libavformat/matroskaenc.c +++ b/libavformat/matroskaenc.c @@ -58,6 +58,7 @@ #include "libavutil/stereo3d.h" #include "libavcodec/av1.h" +#include "libavcodec/avcodec.h" #include "libavcodec/codec_desc.h" #include "libavcodec/xiph.h" #include "libavcodec/mpeg4audio.h" @@ -1142,6 +1143,27 @@ static int mkv_assemble_native_codecprivate(AVFormatContext *s, AVIOContext *dyn else *size_to_reserve = MAX_PCE_SIZE; break; + case AV_CODEC_ID_ARIB_CAPTION: { + unsigned stream_identifier, data_component_id; + switch (par->profile) { + case FF_PROFILE_ARIB_PROFILE_A: + stream_identifier = 0x30; + data_component_id = 0x0008; + break; + case FF_PROFILE_ARIB_PROFILE_C: + stream_identifier = 0x87; + data_component_id = 0x0012; + break; + default: + av_log(s, AV_LOG_ERROR, + "Unset/unknown ARIB caption profile %d utilized!\n", + par->profile); + return AVERROR_INVALIDDATA; + } + avio_w8(dyn_cp, stream_identifier); + avio_wb16(dyn_cp, data_component_id); + break; + } #endif default: if (CONFIG_MATROSKA_MUXER && par->codec_id == AV_CODEC_ID_PRORES && @@ -3274,6 +3296,7 @@ static const AVCodecTag additional_subtitle_tags[] = { { AV_CODEC_ID_DVB_SUBTITLE, 0xFFFFFFFF }, { AV_CODEC_ID_DVD_SUBTITLE, 0xFFFFFFFF }, { AV_CODEC_ID_HDMV_PGS_SUBTITLE, 0xFFFFFFFF }, + { AV_CODEC_ID_ARIB_CAPTION, 0xFFFFFFFF }, { AV_CODEC_ID_NONE, 0xFFFFFFFF } };