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fftools/ffmpeg: propagate decoded_side_data from decoded streams to the filterchain

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Global side data as exported by a decoder may no longer apply if a filter in
the chain altered the frames in some form, like changing color, dimensions,
or channel layout information.
After this change, any such changes in side data will be taken into account by
the encoder futher in the process.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2024-03-24 17:26:20 -03:00
parent 6707d970c0
commit e61b9d4094
3 changed files with 86 additions and 0 deletions
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16
fftools/ffmpeg_utils.h
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@ -44,4 +44,20 @@ static inline int err_merge(int err0, int err1)
return (err0 < 0) ? err0 : FFMIN(err1, 0);
}
/**
* Wrapper calling av_frame_side_data_clone() in a loop for all source entries.
* It does not clear dst beforehand. */
static inline int clone_side_data(AVFrameSideData ***dst, int *nb_dst,
AVFrameSideData * const *src, int nb_src,
unsigned int flags)
{
for (int i = 0; i < nb_src; i++) {
int ret = av_frame_side_data_clone(dst, nb_dst, src[i], flags);
if (ret < 0)
return ret;
}
return 0;
}
#endif // FFTOOLS_FFMPEG_UTILS_H