Function generate_missing_ref

libavcodec/vvc/refs.c:398–430

}

static VVCFrame *generate_missing_ref(VVCContext *s, VVCFrameContext *fc, int poc)
{
    const VVCSPS *sps = fc->ps.sps;
    const VVCPPS *pps = fc->ps.pps;
    VVCFrame *frame;

    frame = alloc_frame(s, fc);
    if (!frame)
        return NULL;

    if (!s->avctx->hwaccel) {
        if (!sps->pixel_shift) {
            for (int i = 0; frame->frame->buf[i]; i++)
                memset(frame->frame->buf[i]->data, 1 << (sps->bit_depth - 1),
                       frame->frame->buf[i]->size);
        } else {
            for (int i = 0; frame->frame->data[i]; i++)
                for (int y = 0; y < (pps->height >> sps->vshift[i]); y++) {
                    uint8_t *dst = frame->frame->data[i] + y * frame->frame->linesize[i];
                    AV_WN16(dst, 1 << (sps->bit_depth - 1));
                    av_memcpy_backptr(dst + 2, 2, 2*(pps->width >> sps->hshift[i]) - 2);
                }
        }
    }

    frame->poc      = poc;
    frame->sequence = s->seq_decode;
    frame->flags    = VVC_FRAME_FLAG_CORRUPT;

    ff_vvc_report_frame_finished(frame);

    return frame;
}

#define CHECK_MAX(d) (frame->ref_##d * frame->sps->r->sps_pic_##d##_max_in_luma_samples >= ref->ref_##d * (frame->pps->r->pps_pic_##d##_in_luma_samples - max))
#define CHECK_SAMPLES(d) (frame->pps->r->pps_pic_##d##_in_luma_samples == ref->pps->r->pps_pic_##d##_in_luma_samples)