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avcodec/vvcdec: support mv wraparound

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A 360 video specific tool
see https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9503377

passed files:
    DMVR_A_Huawei_3.bit
    WRAP_D_InterDigital_4.bit
    WRAP_A_InterDigital_4.bit
    WRAP_B_InterDigital_4.bit
    WRAP_C_InterDigital_4.bit
    ERP_A_MediaTek_3.bit
This commit is contained in:
Nuo Mi
2024-06-04 20:04:11 +08:00
parent 685174069f
commit f68f40736f
2 changed files with 87 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libavcodec/vvc/inter.c
+79 -2
View File
@@ -95,20 +95,97 @@ static void emulated_edge_no_wrap(const VVCLocalContext *lc, uint8_t *dst,
}
}
static void emulated_half(const VVCLocalContext *lc, uint8_t *dst, const ptrdiff_t dst_stride,
const uint8_t *src, const ptrdiff_t src_stride, const int ps,
int x_off, int y_off, const int block_w, const int block_h,
const VVCRect *subpic,const VVCRect *half_sb, const int dmvr_clip)
{
const VVCFrameContext *fc = lc->fc;
int pic_width, pic_height;
src += y_off * src_stride + x_off * (1 << ps);
clip_to_subpic(&x_off, &y_off, &pic_width, &pic_height, subpic, half_sb, dmvr_clip);
fc->vdsp.emulated_edge_mc(dst, src, dst_stride, src_stride,
block_w, block_h, x_off, y_off, pic_width, pic_height);
}
static void sb_set_lr(VVCRect *sb, const int l, const int r)
{
sb->l = l;
sb->r = r;
}
static void sb_wrap(VVCRect *sb, const int wrap)
{
sb_set_lr(sb, sb->l + wrap, sb->r + wrap);
}
static void emulated_edge(const VVCLocalContext *lc, uint8_t *dst,
const uint8_t **src, ptrdiff_t *src_stride, const VVCFrame *src_frame,
int x_sb, int y_sb, int x_off, int y_off, int block_w, int block_h, const int wrap_enabled,
const int is_chroma, const int extra_before, const int extra_after)
{
const VVCSPS *sps = src_frame->sps;
const VVCPPS *pps = src_frame->pps;
const int ps = sps->pixel_shift;
const int subpic_idx = lc->sc->sh.r->curr_subpic_idx;
const int extra = extra_before + extra_after;
const int dmvr_clip = x_sb != x_off || y_sb != y_off;
const int dmvr_left = FFMAX(x_off, x_sb) - extra_before;
const int dmvr_right = FFMIN(x_off, x_sb) + block_w + extra_after;
const int left = x_off - extra_before;
const int top = y_off - extra_before;
const int pic_width = pps->width >> sps->hshift[is_chroma];
const int wrap = pps->ref_wraparound_offset << (sps->min_cb_log2_size_y - sps->hshift[is_chroma]);
const ptrdiff_t dst_stride = EDGE_EMU_BUFFER_STRIDE << ps;
VVCRect sb = { x_sb - extra_before, y_sb - extra_before, x_sb + block_w + extra_after, y_sb + block_h + extra_after };
VVCRect subpic;
subpic_get_rect(&subpic, src_frame, subpic_idx, is_chroma);
return emulated_edge_no_wrap(lc, dst, src, src_stride,
x_off, y_off, block_w, block_h, extra_before, extra_after, &subpic, &sb, dmvr_clip);
if (!wrap_enabled || (dmvr_left >= 0 && dmvr_right <= pic_width)) {
return emulated_edge_no_wrap(lc, dst, src, src_stride,
x_off, y_off, block_w, block_h, extra_before, extra_after, &subpic, &sb, dmvr_clip);
}
if (dmvr_right <= 0) {
sb_wrap(&sb, wrap);
return emulated_edge_no_wrap(lc, dst, src, src_stride,
x_off + wrap, y_off, block_w, block_h, extra_before, extra_after, &subpic, &sb, dmvr_clip);
}
if (dmvr_left >= pic_width) {
sb_wrap(&sb, -wrap);
return emulated_edge_no_wrap(lc, dst, src, src_stride,
x_off - wrap, y_off, block_w, block_h, extra_before, extra_after, &subpic, &sb, dmvr_clip);
}
block_w += extra;
block_h += extra;
// half block are wrapped
if (dmvr_left < 0 ) {
const int w = -left;
VVCRect half_sb = { sb.l + wrap, sb.t, 0 + wrap, sb.b };
emulated_half(lc, dst, dst_stride, *src, *src_stride, ps,
left + wrap, top, w, block_h, &subpic, &half_sb, dmvr_clip);
sb_set_lr(&half_sb, 0, sb.r);
emulated_half(lc, dst + (w << ps), dst_stride, *src, *src_stride, ps,
0, top, block_w - w, block_h, &subpic, &half_sb, dmvr_clip);
} else {
const int w = pic_width - left;
VVCRect half_sb = { sb.l, sb.t, pic_width, sb.b };
emulated_half(lc, dst, dst_stride, *src, *src_stride, ps,
left, top, w, block_h, &subpic, &half_sb, dmvr_clip);
sb_set_lr(&half_sb, pic_width - wrap, sb.r - wrap);
emulated_half(lc, dst + (w << ps), dst_stride, *src, *src_stride, ps,
pic_width - wrap , top, block_w - w, block_h, &subpic, &half_sb, dmvr_clip);
}
*src = dst + extra_before * dst_stride + (extra_before << ps);
*src_stride = dst_stride;
}
#define MC_EMULATED_EDGE(dst, src, src_stride, x_off, y_off) \