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avutil/frame: add helper for adding side data w/ AVBufferRef to array

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2024-03-28 12:58:24 -03:00
parent e4f5c2414b
commit a16338089c
2 changed files with 43 additions and 0 deletions
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19
libavutil/frame.c
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@ -821,6 +821,25 @@ AVFrameSideData *av_frame_side_data_new(AVFrameSideData ***sd, int *nb_sd,
return ret;
}
AVFrameSideData *av_frame_side_data_add(AVFrameSideData ***sd, int *nb_sd,
enum AVFrameSideDataType type,
AVBufferRef **pbuf, unsigned int flags)
{
const AVSideDataDescriptor *desc = av_frame_side_data_desc(type);
AVFrameSideData *sd_dst = NULL;
AVBufferRef *buf = *pbuf;
if (flags & AV_FRAME_SIDE_DATA_FLAG_UNIQUE)
remove_side_data(sd, nb_sd, type);
sd_dst = add_side_data_from_buf(sd, nb_sd, type, buf);
if (!sd_dst)
return NULL;
*pbuf = NULL;
return sd_dst;
}
int av_frame_side_data_clone(AVFrameSideData ***sd, int *nb_sd,
const AVFrameSideData *src, unsigned int flags)
{

24
libavutil/frame.h
View File

@ -1062,6 +1062,30 @@ AVFrameSideData *av_frame_side_data_new(AVFrameSideData ***sd, int *nb_sd,
enum AVFrameSideDataType type,
size_t size, unsigned int flags);
/**
* Add a new side data entry to an array from an existing AVBufferRef.
*
* @param sd pointer to array of side data to which to add another entry,
* or to NULL in order to start a new array.
* @param nb_sd pointer to an integer containing the number of entries in
* the array.
* @param type type of the added side data
* @param buf Pointer to AVBufferRef to add to the array. On success,
* the function takes ownership of the AVBufferRef and *buf is
* set to NULL, unless AV_FRAME_SIDE_DATA_FLAG_NEW_REF is set
* in which case the ownership will remain with the caller.
* @param flags Some combination of AV_FRAME_SIDE_DATA_FLAG_* flags, or 0.
*
* @return newly added side data on success, NULL on error.
* @note In case of AV_FRAME_SIDE_DATA_FLAG_UNIQUE being set, entries of
* matching AVFrameSideDataType will be removed before the addition
* is attempted.
*
*/
AVFrameSideData *av_frame_side_data_add(AVFrameSideData ***sd, int *nb_sd,
enum AVFrameSideDataType type,
AVBufferRef **buf, unsigned int flags);
/**
* Add a new side data entry to an array based on existing side data, taking
* a reference towards the contained AVBufferRef.