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id3v2enc: chapter support

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-05-06 00:14:05 +00:00
parent d26f637b02
commit 47ac344970
1 changed files with 69 additions and 13 deletions
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84
libavformat/id3v2enc.c
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@ -162,33 +162,31 @@ void ff_id3v2_start(ID3v2EncContext *id3, AVIOContext *pb, int id3v2_version,
avio_wb32(pb, 0);
}
int ff_id3v2_write_metadata(AVFormatContext *s, ID3v2EncContext *id3)
static int write_metadata(AVIOContext *pb, AVDictionary **metadata,
ID3v2EncContext *id3, int enc)
{
AVDictionaryEntry *t = NULL;
int enc = id3->version == 3 ? ID3v2_ENCODING_UTF16BOM :
ID3v2_ENCODING_UTF8;
ff_metadata_conv(&s->metadata, ff_id3v2_34_metadata_conv, NULL);
if (id3->version == 3)
id3v2_3_metadata_split_date(&s->metadata);
else if (id3->version == 4)
ff_metadata_conv(&s->metadata, ff_id3v2_4_metadata_conv, NULL);
while ((t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX))) {
int ret;
if ((ret = id3v2_check_write_tag(id3, s->pb, t, ff_id3v2_tags, enc)) > 0) {
ff_metadata_conv(metadata, ff_id3v2_34_metadata_conv, NULL);
if (id3->version == 3)
id3v2_3_metadata_split_date(metadata);
else if (id3->version == 4)
ff_metadata_conv(metadata, ff_id3v2_4_metadata_conv, NULL);
while ((t = av_dict_get(*metadata, "", t, AV_DICT_IGNORE_SUFFIX))) {
if ((ret = id3v2_check_write_tag(id3, pb, t, ff_id3v2_tags, enc)) > 0) {
id3->len += ret;
continue;
}
if ((ret = id3v2_check_write_tag(id3, s->pb, t, id3->version == 3 ?
if ((ret = id3v2_check_write_tag(id3, pb, t, id3->version == 3 ?
ff_id3v2_3_tags : ff_id3v2_4_tags, enc)) > 0) {
id3->len += ret;
continue;
}
/* unknown tag, write as TXXX frame */
if ((ret = id3v2_put_ttag(id3, s->pb, t->key, t->value, MKBETAG('T', 'X', 'X', 'X'), enc)) < 0)
if ((ret = id3v2_put_ttag(id3, pb, t->key, t->value, MKBETAG('T', 'X', 'X', 'X'), enc)) < 0)
return ret;
id3->len += ret;
}
@ -196,6 +194,64 @@ int ff_id3v2_write_metadata(AVFormatContext *s, ID3v2EncContext *id3)
return 0;
}
static int write_chapter(AVFormatContext *s, ID3v2EncContext *id3, int id, int enc)
{
const AVRational time_base = {1, 1000};
AVChapter *ch = s->chapters[id];
uint8_t *dyn_buf = NULL;
AVIOContext *dyn_bc = NULL;
char name[123];
int len, start, end, ret;
if ((ret = avio_open_dyn_buf(&dyn_bc)) < 0)
goto fail;
start = av_rescale_q(ch->start, ch->time_base, time_base);
end = av_rescale_q(ch->end, ch->time_base, time_base);
snprintf(name, 122, "ch%d", id);
id3->len += avio_put_str(dyn_bc, name);
avio_wb32(dyn_bc, start);
avio_wb32(dyn_bc, end);
avio_wb32(dyn_bc, 0xFFFFFFFFu);
avio_wb32(dyn_bc, 0xFFFFFFFFu);
if ((ret = write_metadata(dyn_bc, &ch->metadata, id3, enc)) < 0)
goto fail;
len = avio_close_dyn_buf(dyn_bc, &dyn_buf);
id3->len += 16 + ID3v2_HEADER_SIZE;
avio_wb32(s->pb, MKBETAG('C', 'H', 'A', 'P'));
avio_wb32(s->pb, len);
avio_wb16(s->pb, 0);
avio_write(s->pb, dyn_buf, len);
fail:
if (dyn_bc && !dyn_buf)
avio_close_dyn_buf(dyn_bc, &dyn_buf);
av_freep(&dyn_buf);
return ret;
}
int ff_id3v2_write_metadata(AVFormatContext *s, ID3v2EncContext *id3)
{
int enc = id3->version == 3 ? ID3v2_ENCODING_UTF16BOM :
ID3v2_ENCODING_UTF8;
int i, ret;
if ((ret = write_metadata(s->pb, &s->metadata, id3, enc)) < 0)
return ret;
for (i = 0; i < s->nb_chapters; i++) {
if ((ret = write_chapter(s, id3, i, enc)) < 0)
return ret;
}
return 0;
}
int ff_id3v2_write_apic(AVFormatContext *s, ID3v2EncContext *id3, AVPacket *pkt)
{
AVStream *st = s->streams[pkt->stream_index];