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avformat/matroskaenc: also write chapters when output is WebM 

WebM supports a subset of elements from the Chapters master.
See https://www.webmproject.org/docs/container/#chapters

Addresses ticket #6425

Reviewed-by: James Zern <jzern@google.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2017-06-01 23:42:05 -03:00
parent 9faf098163
commit 2ba896fef7
1 changed files with 16 additions and 13 deletions
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29
libavformat/matroskaenc.c
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@ -1483,8 +1483,10 @@ static int mkv_write_chapters(AVFormatContext *s)
if (ret < 0) return ret;
editionentry = start_ebml_master(dyn_cp, MATROSKA_ID_EDITIONENTRY, 0);
put_ebml_uint(dyn_cp, MATROSKA_ID_EDITIONFLAGDEFAULT, 1);
put_ebml_uint(dyn_cp, MATROSKA_ID_EDITIONFLAGHIDDEN , 0);
if (mkv->mode != MODE_WEBM) {
put_ebml_uint(dyn_cp, MATROSKA_ID_EDITIONFLAGDEFAULT, 1);
put_ebml_uint(dyn_cp, MATROSKA_ID_EDITIONFLAGHIDDEN , 0);
}
for (i = 0; i < s->nb_chapters; i++) {
ebml_master chapteratom, chapterdisplay;
AVChapter *c = s->chapters[i];
@ -1502,8 +1504,10 @@ static int mkv_write_chapters(AVFormatContext *s)
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERUID, c->id + mkv->chapter_id_offset);
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMESTART, chapterstart);
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMEEND, chapterend);
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERFLAGHIDDEN , 0);
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERFLAGENABLED, 1);
if (mkv->mode != MODE_WEBM) {
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERFLAGHIDDEN , 0);
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERFLAGENABLED, 1);
}
if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
chapterdisplay = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERDISPLAY, 0);
put_ebml_string(dyn_cp, MATROSKA_ID_CHAPSTRING, t->value);
@ -1976,11 +1980,11 @@ static int mkv_write_header(AVFormatContext *s)
for (i = 0; i < s->nb_chapters; i++)
mkv->chapter_id_offset = FFMAX(mkv->chapter_id_offset, 1LL - s->chapters[i]->id);
if (mkv->mode != MODE_WEBM) {
ret = mkv_write_chapters(s);
if (ret < 0)
goto fail;
ret = mkv_write_chapters(s);
if (ret < 0)
goto fail;
if (mkv->mode != MODE_WEBM) {
ret = mkv_write_attachments(s);
if (ret < 0)
goto fail;
@ -2525,11 +2529,10 @@ static int mkv_write_trailer(AVFormatContext *s)
end_ebml_master_crc32(pb, &mkv->dyn_bc, mkv, mkv->cluster);
}
if (mkv->mode != MODE_WEBM) {
ret = mkv_write_chapters(s);
if (ret < 0)
return ret;
}
ret = mkv_write_chapters(s);
if (ret < 0)
return ret;
if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live) {
if (mkv->cues->num_entries) {