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Code Issues Releases Activity

avformat/mov: fix track handling when mixing IAMF and video tracks

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Fixes crashes when muxing the two together.

Signed-off-by: James Almer <jamrial@gmail.com>
(cherry picked from commit 5b87869c09cece1583e74b6f796aa825a4765631)
This commit is contained in:
James Almer 2024-07-31 22:19:53 -03:00
parent e3a61e9103
commit 714635937a
1 changed files with 28 additions and 9 deletions
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37
libavformat/movenc.c
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@ -7155,7 +7155,9 @@ static int mov_create_dvd_sub_decoder_specific_info(MOVTrack *track,
static int mov_init_iamf_track(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
MOVTrack *track = &mov->tracks[0]; // IAMF if present is always the first track
MOVTrack *track;
IAMFContext *iamf;
int first_iamf_idx = INT_MAX, last_iamf_idx = 0;
int nb_audio_elements = 0, nb_mix_presentations = 0;
int ret;
@ -7177,24 +7179,24 @@ static int mov_init_iamf_track(AVFormatContext *s)
return AVERROR(EINVAL);
}
track->iamf = av_mallocz(sizeof(*track->iamf));
if (!track->iamf)
iamf = av_mallocz(sizeof(*iamf));
if (!iamf)
return AVERROR(ENOMEM);
for (int i = 0; i < s->nb_stream_groups; i++) {
const AVStreamGroup *stg = s->stream_groups[i];
switch(stg->type) {
case AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT:
for (int j = 0; j < stg->nb_streams; j++) {
track->first_iamf_idx = FFMIN(stg->streams[j]->index, track->first_iamf_idx);
track->last_iamf_idx = FFMAX(stg->streams[j]->index, track->last_iamf_idx);
stg->streams[j]->priv_data = track;
first_iamf_idx = FFMIN(stg->streams[j]->index, first_iamf_idx);
last_iamf_idx = FFMAX(stg->streams[j]->index, last_iamf_idx);
}
ret = ff_iamf_add_audio_element(track->iamf, stg, s);
ret = ff_iamf_add_audio_element(iamf, stg, s);
break;
case AV_STREAM_GROUP_PARAMS_IAMF_MIX_PRESENTATION:
ret = ff_iamf_add_mix_presentation(track->iamf, stg, s);
ret = ff_iamf_add_mix_presentation(iamf, stg, s);
break;
default:
av_assert0(0);
@ -7203,8 +7205,20 @@ static int mov_init_iamf_track(AVFormatContext *s)
return ret;
}
track = &mov->tracks[first_iamf_idx];
track->iamf = iamf;
track->first_iamf_idx = first_iamf_idx;
track->last_iamf_idx = last_iamf_idx;
track->tag = MKTAG('i','a','m','f');
for (int i = 0; i < s->nb_stream_groups; i++) {
AVStreamGroup *stg = s->stream_groups[i];
if (stg->type != AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT)
continue;
for (int j = 0; j < stg->nb_streams; j++)
stg->streams[j]->priv_data = track;
}
ret = avio_open_dyn_buf(&track->iamf_buf);
if (ret < 0)
return ret;
@ -7215,6 +7229,7 @@ static int mov_init_iamf_track(AVFormatContext *s)
static int mov_init(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int has_iamf = 0;
int i, ret;
mov->fc = s;
@ -7365,6 +7380,7 @@ static int mov_init(AVFormatContext *s)
}
st->priv_data = st;
}
has_iamf = 1;
if (!mov->nb_tracks) // We support one track for the entire IAMF structure
mov->nb_tracks++;
@ -7461,8 +7477,11 @@ static int mov_init(AVFormatContext *s)
for (int j = 0, i = 0; j < s->nb_streams; j++) {
AVStream *st = s->streams[j];
if (st != st->priv_data)
if (st != st->priv_data) {
if (has_iamf)
i += has_iamf--;
continue;
}
st->priv_data = &mov->tracks[i++];
}