Function side_data_pref

libavcodec/decode.c:2131–2144

* Check side data preference and clear existing side data from frame * if needed. * * @retval 0 side data of this type can be added to frame * @retval 1 side data of this type should not be added to frame */

 * @retval 1 side data of this type should not be added to frame
 */
static int side_data_pref(const AVCodecContext *avctx, AVFrameSideData ***sd,
                          int *nb_sd, enum AVFrameSideDataType type)
{
    DecodeContext *dc = decode_ctx(avctx->internal);

    // Note: could be skipped for `type` without corresponding packet sd
    if (av_frame_side_data_get(*sd, *nb_sd, type)) {
        if (dc->side_data_pref_mask & (1ULL << type))
            return 1;
        av_frame_side_data_remove(sd, nb_sd, type);
    }

    return 0;
}


int ff_frame_new_side_data(const AVCodecContext *avctx, AVFrame *frame,