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avformat/id3v2enc: write CTOC too

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This commit is contained in:
Paul B Mahol 2019-06-04 16:44:19 +02:00
parent 1e7a8b92ee
commit 79aa91d562
1 changed files with 39 additions and 0 deletions
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39
libavformat/id3v2enc.c
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@ -255,6 +255,42 @@ static int write_metadata(AVIOContext *pb, AVDictionary **metadata,
return 0;
}
static int write_ctoc(AVFormatContext *s, ID3v2EncContext *id3, int enc)
{
uint8_t *dyn_buf = NULL;
AVIOContext *dyn_bc = NULL;
char name[123];
int len, ret;
if (s->nb_chapters == 0)
return 0;
if ((ret = avio_open_dyn_buf(&dyn_bc)) < 0)
goto fail;
id3->len += avio_put_str(dyn_bc, "toc");
avio_wb16(dyn_bc, 0x03);
avio_w8(dyn_bc, s->nb_chapters);
for (int i = 0; i < s->nb_chapters; i++) {
snprintf(name, 122, "ch%d", i);
id3->len += avio_put_str(dyn_bc, name);
}
len = avio_close_dyn_buf(dyn_bc, &dyn_buf);
id3->len += 16 + ID3v2_HEADER_SIZE;
avio_wb32(s->pb, MKBETAG('C', 'T', 'O', 'C'));
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;
}
static int write_chapter(AVFormatContext *s, ID3v2EncContext *id3, int id, int enc)
{
const AVRational time_base = {1, 1000};
@ -306,6 +342,9 @@ int ff_id3v2_write_metadata(AVFormatContext *s, ID3v2EncContext *id3)
if ((ret = write_metadata(s->pb, &s->metadata, id3, enc)) < 0)
return ret;
if ((ret = write_ctoc(s, id3, enc)) < 0)
return ret;
for (i = 0; i < s->nb_chapters; i++) {
if ((ret = write_chapter(s, id3, i, enc)) < 0)
return ret;