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matroskaenc: write attachments.

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This commit is contained in:
Anton Khirnov 2011-07-30 13:37:36 +02:00
parent 98cfe22b5c
commit c7a63a521b
1 changed files with 72 additions and 0 deletions
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72
libavformat/matroskaenc.c
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@ -91,6 +91,8 @@ typedef struct MatroskaMuxContext {
unsigned int audio_buffer_size;
AVPacket cur_audio_pkt;
int have_attachments;
} MatroskaMuxContext;
@ -528,6 +530,11 @@ static int mkv_write_tracks(AVFormatContext *s)
int output_sample_rate = 0;
AVDictionaryEntry *tag;
if (codec->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
mkv->have_attachments = 1;
continue;
}
if (!bit_depth)
bit_depth = av_get_bytes_per_sample(codec->sample_fmt) << 3;
@ -797,6 +804,68 @@ static int mkv_write_tags(AVFormatContext *s)
return 0;
}
static int mkv_write_attachments(AVFormatContext *s)
{
MatroskaMuxContext *mkv = s->priv_data;
AVIOContext *pb = s->pb;
ebml_master attachments;
AVLFG c;
int i, ret;
if (!mkv->have_attachments)
return 0;
av_lfg_init(&c, av_get_random_seed());
ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_ATTACHMENTS, avio_tell(pb));
if (ret < 0) return ret;
attachments = start_ebml_master(pb, MATROSKA_ID_ATTACHMENTS, 0);
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
ebml_master attached_file;
AVDictionaryEntry *t;
const char *mimetype = NULL;
if (st->codec->codec_type != AVMEDIA_TYPE_ATTACHMENT)
continue;
attached_file = start_ebml_master(pb, MATROSKA_ID_ATTACHEDFILE, 0);
if (t = av_dict_get(st->metadata, "title", NULL, 0))
put_ebml_string(pb, MATROSKA_ID_FILEDESC, t->value);
if (!(t = av_dict_get(st->metadata, "filename", NULL, 0))) {
av_log(s, AV_LOG_ERROR, "Attachment stream %d has no filename tag.\n", i);
return AVERROR(EINVAL);
}
put_ebml_string(pb, MATROSKA_ID_FILENAME, t->value);
if (t = av_dict_get(st->metadata, "mimetype", NULL, 0))
mimetype = t->value;
else if (st->codec->codec_id != CODEC_ID_NONE ) {
int i;
for (i = 0; ff_mkv_mime_tags[i].id != CODEC_ID_NONE; i++)
if (ff_mkv_mime_tags[i].id == st->codec->codec_id) {
mimetype = ff_mkv_mime_tags[i].str;
break;
}
}
if (!mimetype) {
av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype tag and "
"it cannot be deduced from the codec id.\n", i);
return AVERROR(EINVAL);
}
put_ebml_string(pb, MATROSKA_ID_FILEMIMETYPE, mimetype);
put_ebml_binary(pb, MATROSKA_ID_FILEDATA, st->codec->extradata, st->codec->extradata_size);
put_ebml_uint(pb, MATROSKA_ID_FILEUID, av_lfg_get(&c));
end_ebml_master(pb, attached_file);
}
end_ebml_master(pb, attachments);
return 0;
}
static int mkv_write_header(AVFormatContext *s)
{
MatroskaMuxContext *mkv = s->priv_data;
@ -870,6 +939,9 @@ static int mkv_write_header(AVFormatContext *s)
ret = mkv_write_tags(s);
if (ret < 0) return ret;
ret = mkv_write_attachments(s);
if (ret < 0) return ret;
}
if (!s->pb->seekable)