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avformat/mov: split off lcevc stream group initialization to its own function 

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2024-10-05 10:36:30 -03:00
parent d5eb0e7fb3
commit e907bf677a
1 changed files with 53 additions and 42 deletions
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95
libavformat/mov.c
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@ -10301,6 +10301,56 @@ static AVStream *mov_find_reference_track(AVFormatContext *s, AVStream *st,
return NULL;
}
static int mov_parse_lcevc_streams(AVFormatContext *s)
{
int err;
for (int i = 0; i < s->nb_streams; i++) {
AVStreamGroup *stg;
AVStream *st = s->streams[i];
AVStream *st_base;
MOVStreamContext *sc = st->priv_data;
int j = 0;
/* Find an enhancement stream. */
if (st->codecpar->codec_id != AV_CODEC_ID_LCEVC ||
!(sc->tref_flags & MOV_TREF_FLAG_ENHANCEMENT))
continue;
st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
stg = avformat_stream_group_create(s, AV_STREAM_GROUP_PARAMS_LCEVC, NULL);
if (!stg)
return AVERROR(ENOMEM);
stg->id = st->id;
stg->params.lcevc->width = st->codecpar->width;
stg->params.lcevc->height = st->codecpar->height;
st->codecpar->width = 0;
st->codecpar->height = 0;
while (st_base = mov_find_reference_track(s, st, j)) {
err = avformat_stream_group_add_stream(stg, st_base);
if (err < 0)
return err;
j = st_base->index + 1;
}
if (!j) {
av_log(s, AV_LOG_ERROR, "Failed to find base stream for enhancement stream\n");
return AVERROR_INVALIDDATA;
}
err = avformat_stream_group_add_stream(stg, st);
if (err < 0)
return err;
stg->params.lcevc->lcevc_index = stg->nb_streams - 1;
}
return 0;
}
static int mov_read_header(AVFormatContext *s)
{
MOVContext *mov = s->priv_data;
@ -10387,48 +10437,9 @@ static int mov_read_header(AVFormatContext *s)
export_orphan_timecode(s);
/* Create LCEVC stream groups. */
for (i = 0; i < s->nb_streams; i++) {
AVStreamGroup *stg;
AVStream *st = s->streams[i];
AVStream *st_base;
MOVStreamContext *sc = st->priv_data;
/* Find an enhancement stream. */
if (st->codecpar->codec_id != AV_CODEC_ID_LCEVC ||
!(sc->tref_flags & MOV_TREF_FLAG_ENHANCEMENT))
continue;
st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
stg = avformat_stream_group_create(s, AV_STREAM_GROUP_PARAMS_LCEVC, NULL);
if (!stg)
return AVERROR(ENOMEM);
stg->id = st->id;
stg->params.lcevc->width = st->codecpar->width;
stg->params.lcevc->height = st->codecpar->height;
st->codecpar->width = 0;
st->codecpar->height = 0;
j = 0;
while (st_base = mov_find_reference_track(s, st, j)) {
err = avformat_stream_group_add_stream(stg, st_base);
if (err < 0)
return err;
j = st_base->index + 1;
}
if (!j) {
av_log(s, AV_LOG_ERROR, "Failed to find base stream for enhancement stream\n");
return AVERROR_INVALIDDATA;
}
err = avformat_stream_group_add_stream(stg, st);
if (err < 0)
return err;
stg->params.lcevc->lcevc_index = stg->nb_streams - 1;
}
err = mov_parse_lcevc_streams(s);
if (err < 0)
return err;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];