diff options
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/matroska.c | 5 | ||||
| -rw-r--r-- | libavformat/matroska.h | 2 | ||||
| -rw-r--r-- | libavformat/matroskadec.c | 135 |
3 files changed, 140 insertions, 2 deletions
diff --git a/libavformat/matroska.c b/libavformat/matroska.c index ee57c1820a..953c5721b6 100644 --- a/libavformat/matroska.c +++ b/libavformat/matroska.c @@ -57,6 +57,11 @@ const CodecTags ff_mkv_codec_tags[]={ {"A_VORBIS" , AV_CODEC_ID_VORBIS}, {"A_WAVPACK4" , AV_CODEC_ID_WAVPACK}, + {"D_WEBVTT/SUBTITLES" , AV_CODEC_ID_WEBVTT}, + {"D_WEBVTT/CAPTIONS" , AV_CODEC_ID_WEBVTT}, + {"D_WEBVTT/DESCRIPTIONS", AV_CODEC_ID_WEBVTT}, + {"D_WEBVTT/METADATA" , AV_CODEC_ID_WEBVTT}, + {"S_TEXT/UTF8" , AV_CODEC_ID_SUBRIP}, {"S_TEXT/UTF8" , AV_CODEC_ID_TEXT}, {"S_TEXT/UTF8" , AV_CODEC_ID_SRT}, diff --git a/libavformat/matroska.h b/libavformat/matroska.h index 9c8071adaf..7cf423c502 100644 --- a/libavformat/matroska.h +++ b/libavformat/matroska.h @@ -265,7 +265,7 @@ typedef enum { */ typedef struct CodecTags{ - char str[20]; + char str[22]; enum AVCodecID id; }CodecTags; diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c index a857630d7e..60f7a5a87c 100644 --- a/libavformat/matroskadec.c +++ b/libavformat/matroskadec.c @@ -1566,7 +1566,8 @@ static int matroska_read_header(AVFormatContext *s) /* Apply some sanity checks. */ if (track->type != MATROSKA_TRACK_TYPE_VIDEO && track->type != MATROSKA_TRACK_TYPE_AUDIO && - track->type != MATROSKA_TRACK_TYPE_SUBTITLE) { + track->type != MATROSKA_TRACK_TYPE_SUBTITLE && + track->type != MATROSKA_TRACK_TYPE_METADATA) { av_log(matroska->ctx, AV_LOG_INFO, "Unknown or unsupported track type %"PRIu64"\n", track->type); @@ -1862,6 +1863,16 @@ static int matroska_read_header(AVFormatContext *s) st->codec->bits_per_coded_sample = track->audio.bitdepth; if (st->codec->codec_id != AV_CODEC_ID_AAC) st->need_parsing = AVSTREAM_PARSE_HEADERS; + } else if (codec_id == AV_CODEC_ID_WEBVTT) { + st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; + + if (!strcmp(track->codec_id, "D_WEBVTT/CAPTIONS")) { + st->disposition |= AV_DISPOSITION_CAPTIONS; + } else if (!strcmp(track->codec_id, "D_WEBVTT/DESCRIPTIONS")) { + st->disposition |= AV_DISPOSITION_DESCRIPTIONS; + } else if (!strcmp(track->codec_id, "D_WEBVTT/METADATA")) { + st->disposition |= AV_DISPOSITION_METADATA; + } } else if (track->type == MATROSKA_TRACK_TYPE_SUBTITLE) { st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; #if FF_API_ASS_SSA @@ -2228,6 +2239,120 @@ fail: return ret; } +static int matroska_parse_webvtt(MatroskaDemuxContext *matroska, + MatroskaTrack *track, + AVStream *st, + uint8_t *data, int data_len, + uint64_t timecode, + uint64_t duration, + int64_t pos) +{ + AVPacket *pkt; + uint8_t *id, *settings, *text, *buf; + int id_len, settings_len, text_len; + uint8_t *p, *q; + int err; + + if (data_len <= 0) + return AVERROR_INVALIDDATA; + + p = data; + q = data + data_len; + + id = p; + id_len = -1; + while (p < q) { + if (*p == '\r' || *p == '\n') { + id_len = p - id; + if (*p == '\r') + p++; + break; + } + p++; + } + + if (p >= q || *p != '\n') + return AVERROR_INVALIDDATA; + p++; + + settings = p; + settings_len = -1; + while (p < q) { + if (*p == '\r' || *p == '\n') { + settings_len = p - settings; + if (*p == '\r') + p++; + break; + } + p++; + } + + if (p >= q || *p != '\n') + return AVERROR_INVALIDDATA; + p++; + + text = p; + text_len = q - p; + while (text_len > 0) { + const int len = text_len - 1; + const uint8_t c = p[len]; + if (c != '\r' && c != '\n') + break; + text_len = len; + } + + if (text_len <= 0) + return AVERROR_INVALIDDATA; + + pkt = av_mallocz(sizeof(*pkt)); + err = av_new_packet(pkt, text_len); + if (err < 0) { + av_free(pkt); + return AVERROR(err); + } + + memcpy(pkt->data, text, text_len); + + if (id_len > 0) { + buf = av_packet_new_side_data(pkt, + AV_PKT_DATA_WEBVTT_IDENTIFIER, + id_len); + if (buf == NULL) { + av_free(pkt); + return AVERROR(ENOMEM); + } + memcpy(buf, id, id_len); + } + + if (settings_len > 0) { + buf = av_packet_new_side_data(pkt, + AV_PKT_DATA_WEBVTT_SETTINGS, + settings_len); + if (buf == NULL) { + av_free(pkt); + return AVERROR(ENOMEM); + } + memcpy(buf, settings, settings_len); + } + + // Do we need this for subtitles? + // pkt->flags = AV_PKT_FLAG_KEY; + + pkt->stream_index = st->index; + pkt->pts = timecode; + + // Do we need this for subtitles? + // pkt->dts = timecode; + + pkt->duration = duration; + pkt->pos = pos; + + dynarray_add(&matroska->packets, &matroska->num_packets, pkt); + matroska->prev_pkt = pkt; + + return 0; +} + static int matroska_parse_frame(MatroskaDemuxContext *matroska, MatroskaTrack *track, AVStream *st, @@ -2456,6 +2581,14 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, if (res) goto end; + } else if (st->codec->codec_id == AV_CODEC_ID_WEBVTT) { + res = matroska_parse_webvtt(matroska, track, st, + data, lace_size[n], + timecode, lace_duration, + pos); + if (res) + goto end; + } else { res = matroska_parse_frame(matroska, track, st, data, lace_size[n], timecode, lace_duration, |