ref: 3bef89f5f7269454ab085d0d166ff85261f5e528
dir: /src/recon.c/
/*
* Copyright © 2018, VideoLAN and dav1d authors
* Copyright © 2018, Two Orioles, LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <string.h>
#include <stdio.h>
#include "common/attributes.h"
#include "common/bitdepth.h"
#include "common/dump.h"
#include "common/intops.h"
#include "common/mem.h"
#include "src/cdef_apply.h"
#include "src/ipred_prepare.h"
#include "src/lf_apply.h"
#include "src/lr_apply.h"
#include "src/recon.h"
#include "src/scan.h"
#include "src/tables.h"
#include "src/wedge.h"
static unsigned read_golomb(MsacContext *const msac) {
int len = 0;
unsigned val = 1;
while (!msac_decode_bool(msac, 128 << 7) && len < 32) len++;
while (len--) val = (val << 1) | msac_decode_bool(msac, 128 << 7);
return val - 1;
}
static int decode_coefs(Dav1dTileContext *const t,
uint8_t *const a, uint8_t *const l,
const enum RectTxfmSize tx, const enum BlockSize bs,
const Av1Block *const b, const int intra,
const int plane, coef *cf,
enum TxfmType *const txtp, uint8_t *res_ctx)
{
Dav1dTileState *const ts = t->ts;
const int chroma = !!plane;
const Dav1dFrameContext *const f = t->f;
const TxfmInfo *const t_dim = &av1_txfm_dimensions[tx];
const int dbg = DEBUG_BLOCK_INFO && plane && 0;
if (dbg) printf("Start: r=%d\n", ts->msac.rng);
// does this block have any non-zero coefficients
const int sctx = get_coef_skip_ctx(t_dim, bs, a, l, chroma, f->cur.p.p.layout);
const int all_skip =
msac_decode_bool_adapt(&ts->msac, ts->cdf.coef.skip[t_dim->ctx][sctx]);
if (dbg)
printf("Post-non-zero[%d][%d][%d]: r=%d\n",
t_dim->ctx, sctx, all_skip, ts->msac.rng);
if (all_skip) {
*res_ctx = 0x40;
*txtp = f->frame_hdr.segmentation.lossless[b->seg_id] ? WHT_WHT :
DCT_DCT;
return -1;
}
// transform type (chroma: derived, luma: explicitly coded)
if (chroma) {
if (intra) {
*txtp = get_uv_intra_txtp(b->uv_mode, tx, &f->frame_hdr, b->seg_id);
} else {
const enum TxfmType y_txtp = *txtp;
*txtp = get_uv_inter_txtp(t_dim, y_txtp, &f->frame_hdr, b->seg_id);
}
} else {
const enum TxfmTypeSet set = get_ext_txtp_set(tx, !intra,
&f->frame_hdr, b->seg_id);
const unsigned set_cnt = av1_tx_type_count[set];
unsigned idx;
if (set_cnt == 1) {
idx = 0;
} else {
const int set_idx = av1_tx_type_set_index[!intra][set];
const enum IntraPredMode y_mode_nofilt = b->y_mode == FILTER_PRED ?
av1_filter_mode_to_y_mode[b->y_angle] : b->y_mode;
uint16_t *const txtp_cdf = intra ?
ts->cdf.m.txtp_intra[set_idx][t_dim->min][y_mode_nofilt] :
ts->cdf.m.txtp_inter[set_idx][t_dim->min];
idx = msac_decode_symbol_adapt(&ts->msac, txtp_cdf, set_cnt);
if (dbg)
printf("Post-txtp[%d->%d][%d->%d][%d][%d->%d]: r=%d\n",
set, set_idx, tx, t_dim->min, b->intra ? y_mode_nofilt : -1,
idx, av1_tx_types_per_set[set][idx], ts->msac.rng);
}
*txtp = av1_tx_types_per_set[set][idx];
}
// find end-of-block (eob)
int eob_bin;
const int tx2dszctx = imin(t_dim->lw, TX_32X32) + imin(t_dim->lh, TX_32X32);
const enum TxClass tx_class = av1_tx_type_class[*txtp];
const int is_1d = tx_class != TX_CLASS_2D;
switch (tx2dszctx) {
#define case_sz(sz, bin) \
case sz: { \
uint16_t *const eob_bin_cdf = ts->cdf.coef.eob_bin_##bin[chroma][is_1d]; \
eob_bin = msac_decode_symbol_adapt(&ts->msac, eob_bin_cdf, 5 + sz); \
break; \
}
case_sz(0, 16);
case_sz(1, 32);
case_sz(2, 64);
case_sz(3, 128);
case_sz(4, 256);
case_sz(5, 512);
case_sz(6, 1024);
#undef case_sz
}
if (dbg)
printf("Post-eob_bin_%d[%d][%d][%d]: r=%d\n",
16 << tx2dszctx, chroma, is_1d, eob_bin, ts->msac.rng);
int eob;
if (eob_bin > 1) {
eob = 1 << (eob_bin - 1);
uint16_t *const eob_hi_bit_cdf =
ts->cdf.coef.eob_hi_bit[t_dim->ctx][chroma][eob_bin];
const int eob_hi_bit = msac_decode_bool_adapt(&ts->msac, eob_hi_bit_cdf);
if (dbg)
printf("Post-eob_hi_bit[%d][%d][%d][%d]: r=%d\n",
t_dim->ctx, chroma, eob_bin, eob_hi_bit, ts->msac.rng);
unsigned mask = eob >> 1;
if (eob_hi_bit) eob |= mask;
for (mask >>= 1; mask; mask >>= 1) {
const int eob_bit = msac_decode_bool(&ts->msac, 128 << 7);
if (eob_bit) eob |= mask;
}
if (dbg)
printf("Post-eob[%d]: r=%d\n", eob, ts->msac.rng);
} else {
eob = eob_bin;
}
// base tokens
uint16_t (*const br_cdf)[5] =
ts->cdf.coef.br_tok[imin(t_dim->ctx, 3)][chroma];
const int16_t *const scan = av1_scans[tx][tx_class];
uint8_t levels[36 * 36];
ptrdiff_t stride = 4 * (imin(t_dim->h, 8) + 1);
memset(levels, 0, stride * 4 * (imin(t_dim->w, 8) + 1));
const int shift = 2 + imin(t_dim->lh, 3), mask = 4 * imin(t_dim->h, 8) - 1;
unsigned cul_level = 0;
for (int i = eob, is_last = 1; i >= 0; i--, is_last = 0) {
const int rc = scan[i], x = rc >> shift, y = rc & mask;
// lo tok
const int ctx = get_coef_nz_ctx(levels, i, rc, is_last, tx, tx_class);
uint16_t *const lo_cdf = is_last ?
ts->cdf.coef.eob_base_tok[t_dim->ctx][chroma][ctx] :
ts->cdf.coef.base_tok[t_dim->ctx][chroma][ctx];
int tok = msac_decode_symbol_adapt(&ts->msac, lo_cdf,
4 - is_last) + is_last;
if (dbg)
printf("Post-lo_tok[%d][%d][%d][%d=%d=%d]: r=%d\n",
t_dim->ctx, chroma, ctx, i, rc, tok, ts->msac.rng);
if (!tok) continue;
// hi tok
if (tok == 3) {
const int br_ctx = get_br_ctx(levels, rc, tx, tx_class);
do {
const int tok_br =
msac_decode_symbol_adapt(&ts->msac, br_cdf[br_ctx], 4);
if (dbg)
printf("Post-hi_tok[%d][%d][%d][%d=%d=%d->%d]: r=%d\n",
imin(t_dim->ctx, 3), chroma, br_ctx,
i, rc, tok_br, tok, ts->msac.rng);
tok += tok_br;
if (tok_br < 3) break;
} while (tok < 15);
}
levels[x * stride + y] = cf[rc] = tok;
}
// residual and sign
int dc_sign = 1;
const uint16_t *const dq_tbl = ts->dq[b->seg_id][plane];
const uint8_t *const qm_tbl = f->qm[is_1d || *txtp == IDTX][tx][plane];
const int dq_shift = imax(0, t_dim->ctx - 2);
for (int i = 0; i <= eob; i++) {
const int rc = scan[i];
int tok = cf[rc];
if (!tok) continue;
int dq;
// sign
int sign;
if (i == 0) {
const int dc_sign_ctx = get_dc_sign_ctx(t_dim, a, l);
uint16_t *const dc_sign_cdf =
ts->cdf.coef.dc_sign[chroma][dc_sign_ctx];
sign = msac_decode_bool_adapt(&ts->msac, dc_sign_cdf);
if (dbg)
printf("Post-dc_sign[%d][%d][%d]: r=%d\n",
chroma, dc_sign_ctx, sign, ts->msac.rng);
dc_sign = sign ? 0 : 2;
dq = (dq_tbl[0] * qm_tbl[0] + 16) >> 5;
} else {
sign = msac_decode_bool(&ts->msac, 128 << 7);
if (dbg)
printf("Post-sign[%d=%d=%d]: r=%d\n", i, rc, sign, ts->msac.rng);
dq = (dq_tbl[1] * qm_tbl[rc] + 16) >> 5;
}
// residual
if (tok == 15) {
tok += read_golomb(&ts->msac);
if (dbg)
printf("Post-residual[%d=%d=%d->%d]: r=%d\n",
i, rc, tok - 15, tok, ts->msac.rng);
}
// dequant
cul_level += tok;
tok *= dq;
tok >>= dq_shift;
cf[rc] = sign ? -tok : tok;
}
// context
*res_ctx = imin(cul_level, 63) | (dc_sign << 6);
return eob;
}
static void read_coef_tree(Dav1dTileContext *const t,
const enum BlockSize bs, const Av1Block *const b,
const enum RectTxfmSize ytx, const int depth,
const uint16_t *const tx_split,
const int x_off, const int y_off, pixel *dst)
{
const Dav1dFrameContext *const f = t->f;
Dav1dTileState *const ts = t->ts;
const Dav1dDSPContext *const dsp = f->dsp;
const TxfmInfo *const t_dim = &av1_txfm_dimensions[ytx];
const int txw = t_dim->w, txh = t_dim->h;
if (depth < 2 && tx_split[depth] & (1 << (y_off * 4 + x_off))) {
const enum RectTxfmSize sub = t_dim->sub;
const TxfmInfo *const sub_t_dim = &av1_txfm_dimensions[sub];
const int txsw = sub_t_dim->w, txsh = sub_t_dim->h;
read_coef_tree(t, bs, b, sub, depth + 1, tx_split,
x_off * 2 + 0, y_off * 2 + 0, dst);
t->bx += txsw;
if (txw >= txh && t->bx < f->bw)
read_coef_tree(t, bs, b, sub, depth + 1, tx_split, x_off * 2 + 1,
y_off * 2 + 0, dst ? &dst[4 * txsw] : NULL);
t->bx -= txsw;
t->by += txsh;
if (txh >= txw && t->by < f->bh) {
if (dst)
dst += 4 * txsh * PXSTRIDE(f->cur.p.stride[0]);
read_coef_tree(t, bs, b, sub, depth + 1, tx_split,
x_off * 2 + 0, y_off * 2 + 1, dst);
t->bx += txsw;
if (txw >= txh && t->bx < f->bw)
read_coef_tree(t, bs, b, sub, depth + 1, tx_split, x_off * 2 + 1,
y_off * 2 + 1, dst ? &dst[4 * txsw] : NULL);
t->bx -= txsw;
}
t->by -= txsh;
} else {
const int bx4 = t->bx & 31, by4 = t->by & 31;
enum TxfmType txtp;
uint8_t cf_ctx;
int eob;
coef *cf;
struct CodedBlockInfo *cbi;
if (f->frame_thread.pass) {
cf = ts->frame_thread.cf;
ts->frame_thread.cf += imin(t_dim->w, 8) * imin(t_dim->h, 8) * 16;
cbi = &f->frame_thread.cbi[t->by * f->b4_stride + t->bx];
} else {
cf = t->cf;
}
if (f->frame_thread.pass != 2) {
eob = decode_coefs(t, &t->a->lcoef[bx4], &t->l.lcoef[by4],
ytx, bs, b, 0, 0, cf, &txtp, &cf_ctx);
if (DEBUG_BLOCK_INFO)
printf("Post-y-cf-blk[tx=%d,txtp=%d,eob=%d]: r=%d\n",
ytx, txtp, eob, ts->msac.rng);
memset(&t->a->lcoef[bx4], cf_ctx, imin(txw, f->bw - t->bx));
memset(&t->l.lcoef[by4], cf_ctx, imin(txh, f->bh - t->by));
for (int y = 0; y < txh; y++)
memset(&t->txtp_map[(by4 + y) * 32 + bx4], txtp, txw);
if (f->frame_thread.pass == 1) {
cbi->eob[0] = eob;
cbi->txtp[0] = txtp;
}
} else {
eob = cbi->eob[0];
txtp = cbi->txtp[0];
}
if (!(f->frame_thread.pass & 1)) {
assert(dst);
if (eob >= 0) {
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
coef_dump(cf, imin(t_dim->h, 8) * 4, imin(t_dim->w, 8) * 4, 3, "dq");
dsp->itx.itxfm_add[ytx][txtp](dst, f->cur.p.stride[0], cf, eob);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
hex_dump(dst, f->cur.p.stride[0], t_dim->w * 4, t_dim->h * 4, "recon");
}
}
}
}
void bytefn(read_coef_blocks)(Dav1dTileContext *const t,
const enum BlockSize bs, const Av1Block *const b)
{
const Dav1dFrameContext *const f = t->f;
const int ss_ver = f->cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = f->cur.p.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int bx4 = t->bx & 31, by4 = t->by & 31;
const int cbx4 = bx4 >> ss_hor, cby4 = by4 >> ss_ver;
const uint8_t *const b_dim = av1_block_dimensions[bs];
const int bw4 = b_dim[0], bh4 = b_dim[1];
const int cbw4 = (bw4 + 1) >> ss_hor, cbh4 = (bh4 + 1) >> ss_ver;
const int has_chroma = f->seq_hdr.layout != DAV1D_PIXEL_LAYOUT_I400 &&
(bw4 > ss_hor || t->bx & 1) &&
(bh4 > ss_ver || t->by & 1);
if (b->skip) {
memset(&t->a->lcoef[bx4], 0x40, bw4);
memset(&t->l.lcoef[by4], 0x40, bh4);
if (has_chroma) for (int pl = 0; pl < 2; pl++) {
memset(&t->a->ccoef[pl][cbx4], 0x40, cbw4);
memset(&t->l.ccoef[pl][cby4], 0x40, cbh4);
}
return;
}
Dav1dTileState *const ts = t->ts;
const int w4 = imin(bw4, f->bw - t->bx), h4 = imin(bh4, f->bh - t->by);
const int cw4 = (w4 + ss_hor) >> ss_hor, ch4 = (h4 + ss_ver) >> ss_ver;
assert(f->frame_thread.pass == 1);
assert(!b->skip);
const TxfmInfo *const uv_t_dim = &av1_txfm_dimensions[b->uvtx];
const TxfmInfo *const t_dim = &av1_txfm_dimensions[b->intra ? b->tx : b->max_ytx];
for (int init_y = 0; init_y < h4; init_y += 16) {
for (int init_x = 0; init_x < w4; init_x += 16) {
const int sub_h4 = imin(h4, 16 + init_y);
const int sub_w4 = imin(w4, init_x + 16);
int y_off = !!init_y, y, x;
for (y = init_y, t->by += init_y; y < sub_h4;
y += t_dim->h, t->by += t_dim->h, y_off++)
{
struct CodedBlockInfo *const cbi =
&f->frame_thread.cbi[t->by * f->b4_stride];
int x_off = !!init_x;
for (x = init_x, t->bx += init_x; x < sub_w4;
x += t_dim->w, t->bx += t_dim->w, x_off++)
{
if (!b->intra) {
read_coef_tree(t, bs, b, b->max_ytx, 0, b->tx_split,
x_off, y_off, NULL);
} else {
uint8_t cf_ctx = 0x40;
enum TxfmType txtp;
const int eob = cbi[t->bx].eob[0] =
decode_coefs(t, &t->a->lcoef[bx4 + x],
&t->l.lcoef[by4 + y], b->tx, bs, b, 1,
0, ts->frame_thread.cf, &txtp, &cf_ctx);
if (DEBUG_BLOCK_INFO)
printf("Post-y-cf-blk[tx=%d,txtp=%d,eob=%d]: r=%d\n",
b->tx, txtp, eob, ts->msac.rng);
cbi[t->bx].txtp[0] = txtp;
ts->frame_thread.cf += imin(t_dim->w, 8) * imin(t_dim->h, 8) * 16;
memset(&t->a->lcoef[bx4 + x], cf_ctx,
imin(t_dim->w, f->bw - t->bx));
memset(&t->l.lcoef[by4 + y], cf_ctx,
imin(t_dim->h, f->bh - t->by));
}
}
t->bx -= x;
}
t->by -= y;
if (!has_chroma) continue;
const int sub_ch4 = imin(ch4, (init_y + 16) >> ss_ver);
const int sub_cw4 = imin(cw4, (init_x + 16) >> ss_hor);
for (int pl = 0; pl < 2; pl++) {
for (y = init_y >> ss_ver, t->by += init_y; y < sub_ch4;
y += uv_t_dim->h, t->by += uv_t_dim->h << ss_ver)
{
struct CodedBlockInfo *const cbi =
&f->frame_thread.cbi[t->by * f->b4_stride];
for (x = init_x >> ss_hor, t->bx += init_x; x < sub_cw4;
x += uv_t_dim->w, t->bx += uv_t_dim->w << ss_hor)
{
uint8_t cf_ctx = 0x40;
enum TxfmType txtp;
if (!b->intra)
txtp = t->txtp_map[(by4 + (y << ss_ver)) * 32 +
bx4 + (x << ss_hor)];
const int eob = cbi[t->bx].eob[1 + pl] =
decode_coefs(t, &t->a->ccoef[pl][cbx4 + x],
&t->l.ccoef[pl][cby4 + y], b->uvtx, bs,
b, b->intra, 1 + pl, ts->frame_thread.cf,
&txtp, &cf_ctx);
if (DEBUG_BLOCK_INFO)
printf("Post-uv-cf-blk[pl=%d,tx=%d,"
"txtp=%d,eob=%d]: r=%d\n",
pl, b->uvtx, txtp, eob, ts->msac.rng);
cbi[t->bx].txtp[1 + pl] = txtp;
ts->frame_thread.cf += uv_t_dim->w * uv_t_dim->h * 16;
memset(&t->a->ccoef[pl][cbx4 + x], cf_ctx,
imin(uv_t_dim->w, (f->bw - t->bx + ss_hor) >> ss_hor));
memset(&t->l.ccoef[pl][cby4 + y], cf_ctx,
imin(uv_t_dim->h, (f->bh - t->by + ss_ver) >> ss_ver));
}
t->bx -= x << ss_hor;
}
t->by -= y << ss_ver;
}
}
}
}
static void emu_edge(pixel *dst, const ptrdiff_t dst_stride,
const pixel *ref, const ptrdiff_t ref_stride,
const int bw, const int bh,
const int iw, const int ih,
const int x, const int y)
{
// find offset in reference of visible block to copy
ref += iclip(y, 0, ih - 1) * PXSTRIDE(ref_stride) + iclip(x, 0, iw - 1);
// number of pixels to extend (left, right, top, bottom)
const int left_ext = iclip(-x, 0, bw - 1);
const int right_ext = iclip(x + bw - iw, 0, bw - 1);
assert(left_ext + right_ext < bw);
const int top_ext = iclip(-y, 0, bh - 1);
const int bottom_ext = iclip(y + bh - ih, 0, bh - 1);
assert(top_ext + bottom_ext < bh);
// copy visible portion first
pixel *blk = dst + top_ext * PXSTRIDE(dst_stride);
const int center_w = bw - left_ext - right_ext;
const int center_h = bh - top_ext - bottom_ext;
for (int y = 0; y < center_h; y++) {
pixel_copy(blk + left_ext, ref, center_w);
// extend left edge for this line
if (left_ext)
pixel_set(blk, blk[left_ext], left_ext);
// extend right edge for this line
if (right_ext)
pixel_set(blk + left_ext + center_w, blk[left_ext + center_w - 1],
right_ext);
ref += PXSTRIDE(ref_stride);
blk += PXSTRIDE(dst_stride);
}
// copy top
blk = dst + top_ext * PXSTRIDE(dst_stride);
for (int y = 0; y < top_ext; y++) {
pixel_copy(dst, blk, bw);
dst += PXSTRIDE(dst_stride);
}
// copy bottom
dst += center_h * PXSTRIDE(dst_stride);
for (int y = 0; y < bottom_ext; y++) {
pixel_copy(dst, &dst[-PXSTRIDE(dst_stride)], bw);
dst += PXSTRIDE(dst_stride);
}
}
static void mc(Dav1dTileContext *const t,
pixel *const dst8, coef *const dst16, const ptrdiff_t dst_stride,
const int bw4, const int bh4,
const int bx, const int by, const int pl,
const mv mv, const Dav1dThreadPicture *const refp,
const enum Filter2d filter_2d)
{
assert((dst8 != NULL) ^ (dst16 != NULL));
const Dav1dFrameContext *const f = t->f;
const int ss_ver = !!pl && f->cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = !!pl && f->cur.p.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int h_mul = 4 >> ss_hor, v_mul = 4 >> ss_ver;
const int mvx = mv.x, mvy = mv.y;
const int mx = mvx & (15 >> !ss_hor), my = mvy & (15 >> !ss_ver);
const int dx = bx * h_mul + (mvx >> (3 + ss_hor));
const int dy = by * v_mul + (mvy >> (3 + ss_ver));
ptrdiff_t ref_stride = refp->p.stride[!!pl];
const pixel *ref;
if (refp != &f->cur) // i.e. not for intrabc
dav1d_thread_picture_wait(refp, dy + bh4 * v_mul + !!my * 4,
PLANE_TYPE_Y + !!pl);
if (dx < 3 || dx + bw4 * h_mul + 4 > ((f->cur.p.p.w + ss_hor) >> ss_hor) ||
dy < 3 || dy + bh4 * v_mul + 4 > ((f->cur.p.p.h + ss_ver) >> ss_ver))
{
emu_edge(t->emu_edge, 160 * sizeof(pixel), refp->p.data[pl], ref_stride,
bw4 * h_mul + 7, bh4 * v_mul + 7,
(f->cur.p.p.w + ss_hor) >> ss_hor,
(f->cur.p.p.h + ss_ver) >> ss_ver,
dx - 3, dy - 3);
ref = &t->emu_edge[160 * 3 + 3];
ref_stride = 160 * sizeof(pixel);
} else {
ref = ((pixel *) refp->p.data[pl]) + PXSTRIDE(ref_stride) * dy + dx;
}
if (dst8 != NULL) {
f->dsp->mc.mc[filter_2d](dst8, dst_stride, ref, ref_stride, bw4 * h_mul,
bh4 * v_mul, mx << !ss_hor, my << !ss_ver);
} else {
f->dsp->mc.mct[filter_2d](dst16, ref, ref_stride, bw4 * h_mul,
bh4 * v_mul, mx << !ss_hor, my << !ss_ver);
}
}
static void obmc(Dav1dTileContext *const t,
pixel *const dst, const ptrdiff_t dst_stride,
const uint8_t *const b_dim, const int pl,
const int bx4, const int by4, const int w4, const int h4)
{
assert(!(t->bx & 1) && !(t->by & 1));
const Dav1dFrameContext *const f = t->f;
const refmvs *const r = &f->mvs[t->by * f->b4_stride + t->bx];
pixel *const lap = t->scratch.lap;
static const uint8_t obmc_mask_2[2] = { 19, 0 };
static const uint8_t obmc_mask_4[4] = { 25, 14, 5, 0 };
static const uint8_t obmc_mask_8[8] = { 28, 22, 16, 11, 7, 3, 0, 0 };
static const uint8_t obmc_mask_16[16] = { 30, 27, 24, 21, 18, 15, 12, 10,
8, 6, 4, 3, 0, 0, 0, 0 };
static const uint8_t obmc_mask_32[32] = { 31, 29, 28, 26, 24, 23, 21, 20,
19, 17, 16, 14, 13, 12, 11, 9,
8, 7, 6, 5, 4, 4, 3, 2,
0, 0, 0, 0, 0, 0, 0, 0 };
static const uint8_t *const obmc_masks[] = {
obmc_mask_2, obmc_mask_4, obmc_mask_8, obmc_mask_16, obmc_mask_32
};
const int ss_ver = !!pl && f->cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = !!pl && f->cur.p.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int h_mul = 4 >> ss_hor, v_mul = 4 >> ss_ver;
if (t->by > t->ts->tiling.row_start &&
(!pl || b_dim[0] * h_mul + b_dim[1] * v_mul >= 16))
{
for (int i = 0, x = 0; x < w4 && i < imin(b_dim[2], 4); ) {
// only odd blocks are considered for overlap handling, hence +1
const refmvs *const a_r = &r[x - f->b4_stride + 1];
const uint8_t *const a_b_dim =
av1_block_dimensions[sbtype_to_bs[a_r->sb_type]];
if (a_r->ref[0] > 0) {
mc(t, lap, NULL, 128 * sizeof(pixel),
iclip(a_b_dim[0], 2, b_dim[0]), imin(b_dim[1], 16) >> 1,
t->bx + x, t->by, pl, a_r->mv[0],
&f->refp[a_r->ref[0] - 1],
av1_filter_2d[t->a->filter[1][bx4 + x + 1]][t->a->filter[0][bx4 + x + 1]]);
f->dsp->mc.blend(&dst[x * h_mul], dst_stride,
lap, 128 * sizeof(pixel),
h_mul * iclip(a_b_dim[0], 2, b_dim[0]),
v_mul * imin(b_dim[1], 16) >> 1,
obmc_masks[imin(b_dim[3], 4) - ss_ver], 1);
i++;
}
x += imax(a_b_dim[0], 2);
}
}
if (t->bx > t->ts->tiling.col_start)
for (int i = 0, y = 0; y < h4 && i < imin(b_dim[3], 4); ) {
// only odd blocks are considered for overlap handling, hence +1
const refmvs *const l_r = &r[(y + 1) * f->b4_stride - 1];
const uint8_t *const l_b_dim =
av1_block_dimensions[sbtype_to_bs[l_r->sb_type]];
if (l_r->ref[0] > 0) {
mc(t, lap, NULL, 32 * sizeof(pixel),
imin(b_dim[0], 16) >> 1,
iclip(l_b_dim[1], 2, b_dim[1]),
t->bx, t->by + y, pl, l_r->mv[0],
&f->refp[l_r->ref[0] - 1],
av1_filter_2d[t->l.filter[1][by4 + y + 1]][t->l.filter[0][by4 + y + 1]]);
f->dsp->mc.blend(&dst[y * v_mul * PXSTRIDE(dst_stride)], dst_stride,
lap, 32 * sizeof(pixel),
h_mul * imin(b_dim[0], 16) >> 1,
v_mul * iclip(l_b_dim[1], 2, b_dim[1]),
obmc_masks[imin(b_dim[2], 4) - ss_hor], 0);
i++;
}
y += imax(l_b_dim[1], 2);
}
}
static void warp_affine(Dav1dTileContext *const t,
pixel *dst8, coef *dst16, const ptrdiff_t dstride,
const uint8_t *const b_dim, const int pl,
const Dav1dThreadPicture *const refp,
const WarpedMotionParams *const wmp)
{
assert((dst8 != NULL) ^ (dst16 != NULL));
const Dav1dFrameContext *const f = t->f;
const Dav1dDSPContext *const dsp = f->dsp;
const int ss_ver = !!pl && f->cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = !!pl && f->cur.p.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int h_mul = 4 >> ss_hor, v_mul = 4 >> ss_ver;
assert(!((b_dim[0] * h_mul) & 7) && !((b_dim[1] * v_mul) & 7));
const int32_t *const mat = wmp->matrix;
const int width = (f->cur.p.p.w + ss_hor) >> ss_hor;
const int height = (f->cur.p.p.h + ss_ver) >> ss_ver;
for (int y = 0; y < b_dim[1] * v_mul; y += 8) {
for (int x = 0; x < b_dim[0] * h_mul; x += 8) {
// calculate transformation relative to center of 8x8 block in
// luma pixel units
const int src_x = t->bx * 4 + ((x + 4) << ss_hor);
const int src_y = t->by * 4 + ((y + 4) << ss_ver);
const int mvx = (mat[2] * src_x + mat[3] * src_y + mat[0]) >> ss_hor;
const int mvy = (mat[4] * src_x + mat[5] * src_y + mat[1]) >> ss_ver;
const int dx = (mvx >> 16) - 4;
const int mx = ((mvx & 0xffff) - wmp->alpha * 4 -
wmp->beta * 7) & ~0x3f;
const int dy = (mvy >> 16) - 4;
const int my = ((mvy & 0xffff) - wmp->gamma * 4 -
wmp->delta * 4) & ~0x3f;
const pixel *ref_ptr;
ptrdiff_t ref_stride = refp->p.stride[!!pl];
dav1d_thread_picture_wait(refp, dy + 4 + 8,
PLANE_TYPE_Y + !!pl);
if (dx < 3 || dx + 8 + 4 > width || dy < 3 || dy + 8 + 4 > height) {
emu_edge(t->emu_edge, 160 * sizeof(pixel), refp->p.data[pl],
ref_stride, 15, 15, width, height, dx - 3, dy - 3);
ref_ptr = &t->emu_edge[160 * 3 + 3];
ref_stride = 160 * sizeof(pixel);
} else {
ref_ptr = ((pixel *) refp->p.data[pl]) + PXSTRIDE(ref_stride) * dy + dx;
}
if (dst16 != NULL)
dsp->mc.warp8x8t(&dst16[x], dstride, ref_ptr, ref_stride,
wmp->abcd, mx, my);
else
dsp->mc.warp8x8(&dst8[x], dstride, ref_ptr, ref_stride,
wmp->abcd, mx, my);
}
if (dst8) dst8 += 8 * PXSTRIDE(dstride);
else dst16 += 8 * dstride;
}
}
void bytefn(recon_b_intra)(Dav1dTileContext *const t, const enum BlockSize bs,
const enum EdgeFlags intra_edge_flags,
const Av1Block *const b)
{
Dav1dTileState *const ts = t->ts;
const Dav1dFrameContext *const f = t->f;
const Dav1dDSPContext *const dsp = f->dsp;
const int bx4 = t->bx & 31, by4 = t->by & 31;
const int ss_ver = f->cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = f->cur.p.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int cbx4 = bx4 >> ss_hor, cby4 = by4 >> ss_ver;
const uint8_t *const b_dim = av1_block_dimensions[bs];
const int bw4 = b_dim[0], bh4 = b_dim[1];
const int w4 = imin(bw4, f->bw - t->bx), h4 = imin(bh4, f->bh - t->by);
const int cw4 = (w4 + ss_hor) >> ss_hor, ch4 = (h4 + ss_ver) >> ss_ver;
const int has_chroma = f->seq_hdr.layout != DAV1D_PIXEL_LAYOUT_I400 &&
(bw4 > ss_hor || t->bx & 1) &&
(bh4 > ss_ver || t->by & 1);
const TxfmInfo *const t_dim = &av1_txfm_dimensions[b->tx];
const TxfmInfo *const uv_t_dim = &av1_txfm_dimensions[b->uvtx];
// coefficient coding
pixel edge_mem[257], *const edge = &edge_mem[128];
const int cbw4 = (bw4 + ss_hor) >> ss_hor, cbh4 = (bh4 + ss_ver) >> ss_ver;
for (int init_y = 0; init_y < h4; init_y += 16) {
for (int init_x = 0; init_x < w4; init_x += 16) {
if (b->pal_sz[0]) {
pixel *dst = ((pixel *) f->cur.p.data[0]) +
4 * (t->by * PXSTRIDE(f->cur.p.stride[0]) + t->bx);
const uint8_t *pal_idx;
if (f->frame_thread.pass) {
pal_idx = ts->frame_thread.pal_idx;
ts->frame_thread.pal_idx += bw4 * bh4 * 16;
} else {
pal_idx = t->scratch.pal_idx;
}
const uint16_t *const pal = f->frame_thread.pass ?
f->frame_thread.pal[((t->by >> 1) + (t->bx & 1)) * (f->b4_stride >> 1) +
((t->bx >> 1) + (t->by & 1))][0] : t->pal[0];
f->dsp->ipred.pal_pred(dst, f->cur.p.stride[0], pal,
pal_idx, bw4 * 4, bh4 * 4);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
hex_dump(dst, PXSTRIDE(f->cur.p.stride[0]),
bw4 * 4, bh4 * 4, "y-pal-pred");
}
const int sm_fl = sm_flag(t->a, bx4) | sm_flag(&t->l, by4);
const int sb_has_tr = init_x + 16 < w4 ? 1 : init_y ? 0 :
intra_edge_flags & EDGE_I444_TOP_HAS_RIGHT;
const int sb_has_bl = init_x ? 0 : init_y + 16 < h4 ? 1 :
intra_edge_flags & EDGE_I444_LEFT_HAS_BOTTOM;
int y, x;
const int sub_h4 = imin(h4, 16 + init_y);
const int sub_w4 = imin(w4, init_x + 16);
for (y = init_y, t->by += init_y; y < sub_h4;
y += t_dim->h, t->by += t_dim->h)
{
pixel *dst = ((pixel *) f->cur.p.data[0]) +
4 * (t->by * PXSTRIDE(f->cur.p.stride[0]) +
t->bx + init_x);
for (x = init_x, t->bx += init_x; x < sub_w4;
x += t_dim->w, t->bx += t_dim->w)
{
if (b->pal_sz[0]) goto skip_y_pred;
int angle = b->y_angle;
const enum EdgeFlags edge_flags =
(((y > init_y || !sb_has_tr) && (x + t_dim->w >= sub_w4)) ?
0 : EDGE_I444_TOP_HAS_RIGHT) |
((x > init_x || (!sb_has_bl && y + t_dim->h >= sub_h4)) ?
0 : EDGE_I444_LEFT_HAS_BOTTOM);
const pixel *top_sb_edge = NULL;
if (!(t->by & (f->sb_step - 1))) {
top_sb_edge = f->ipred_edge[0];
const int sby = t->by >> f->sb_shift;
top_sb_edge += f->sb128w * 128 * (sby - 1);
}
const enum IntraPredMode m =
bytefn(prepare_intra_edges)(t->bx,
t->bx > ts->tiling.col_start,
t->by,
t->by > ts->tiling.row_start,
ts->tiling.col_end,
ts->tiling.row_end,
edge_flags, dst,
f->cur.p.stride[0], top_sb_edge,
b->y_mode, &angle,
t_dim->w, t_dim->h, edge);
dsp->ipred.intra_pred[b->tx][m](dst, f->cur.p.stride[0],
edge, angle | sm_fl);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS) {
hex_dump(edge - t_dim->h * 4, t_dim->h * 4,
t_dim->h * 4, 2, "l");
hex_dump(edge, 0, 1, 1, "tl");
hex_dump(edge + 1, t_dim->w * 4,
t_dim->w * 4, 2, "t");
hex_dump(dst, f->cur.p.stride[0],
t_dim->w * 4, t_dim->h * 4, "y-intra-pred");
}
skip_y_pred: {}
if (!b->skip) {
coef *cf;
int eob;
enum TxfmType txtp;
if (f->frame_thread.pass) {
cf = ts->frame_thread.cf;
ts->frame_thread.cf += imin(t_dim->w, 8) * imin(t_dim->h, 8) * 16;
const struct CodedBlockInfo *const cbi =
&f->frame_thread.cbi[t->by * f->b4_stride + t->bx];
eob = cbi->eob[0];
txtp = cbi->txtp[0];
} else {
uint8_t cf_ctx;
cf = t->cf;
eob = decode_coefs(t, &t->a->lcoef[bx4 + x],
&t->l.lcoef[by4 + y], b->tx, bs,
b, 1, 0, cf, &txtp, &cf_ctx);
if (DEBUG_BLOCK_INFO)
printf("Post-y-cf-blk[tx=%d,txtp=%d,eob=%d]: r=%d\n",
b->tx, txtp, eob, ts->msac.rng);
memset(&t->a->lcoef[bx4 + x], cf_ctx,
imin(t_dim->w, f->bw - t->bx));
memset(&t->l.lcoef[by4 + y], cf_ctx,
imin(t_dim->h, f->bh - t->by));
}
if (eob >= 0) {
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
coef_dump(cf, imin(t_dim->h, 8) * 4,
imin(t_dim->w, 8) * 4, 3, "dq");
dsp->itx.itxfm_add[b->tx]
[txtp](dst,
f->cur.p.stride[0],
cf, eob);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
hex_dump(dst, f->cur.p.stride[0],
t_dim->w * 4, t_dim->h * 4, "recon");
}
} else if (!f->frame_thread.pass) {
memset(&t->a->lcoef[bx4 + x], 0x40, t_dim->w);
memset(&t->l.lcoef[by4 + y], 0x40, t_dim->h);
}
dst += 4 * t_dim->w;
}
t->bx -= x;
}
t->by -= y;
if (!has_chroma) continue;
const ptrdiff_t stride = f->cur.p.stride[1];
if (b->uv_mode == CFL_PRED) {
assert(!init_x && !init_y);
int16_t *const ac = t->scratch.ac;
ALIGN_STK_32(pixel, uv_pred, 2 * 32,);
pixel *y_src = ((pixel *) f->cur.p.data[0]) + 4 * (t->bx & ~ss_hor) +
4 * (t->by & ~ss_ver) * PXSTRIDE(f->cur.p.stride[0]);
const ptrdiff_t uv_off = 4 * ((t->bx >> ss_hor) +
(t->by >> ss_ver) * PXSTRIDE(stride));
pixel *const uv_dst[2] = { ((pixel *) f->cur.p.data[1]) + uv_off,
((pixel *) f->cur.p.data[2]) + uv_off };
// cfl_uvtx can be different from uvtx in case of lossless
const enum RectTxfmSize cfl_uvtx =
av1_max_txfm_size_for_bs[bs][f->cur.p.p.layout];
const TxfmInfo *const cfl_uv_t_dim =
&av1_txfm_dimensions[cfl_uvtx];
for (int pl = 0; pl < 2; pl++) {
int angle = 0;
const pixel *top_sb_edge = NULL;
if (!((t->by & ~ss_ver) & (f->sb_step - 1))) {
top_sb_edge = f->ipred_edge[pl + 1];
const int sby = t->by >> f->sb_shift;
top_sb_edge += f->sb128w * 128 * (sby - 1);
}
const enum IntraPredMode m =
bytefn(prepare_intra_edges)(t->bx >> ss_hor,
(t->bx >> ss_hor) >
(ts->tiling.col_start >> ss_hor),
t->by >> ss_ver,
(t->by >> ss_ver) >
(ts->tiling.row_start >> ss_ver),
ts->tiling.col_end >> ss_hor,
ts->tiling.row_end >> ss_ver,
0, uv_dst[pl], stride,
top_sb_edge, DC_PRED, &angle,
cfl_uv_t_dim->w,
cfl_uv_t_dim->h, edge);
dsp->ipred.intra_pred[cfl_uvtx][m](&uv_pred[32 * pl],
0, edge, 0);
}
const int furthest_r =
((cw4 << ss_hor) + t_dim->w - 1) & ~(t_dim->w - 1);
const int furthest_b =
((ch4 << ss_ver) + t_dim->h - 1) & ~(t_dim->h - 1);
dsp->ipred.cfl_ac[f->cur.p.p.layout - 1]
[cfl_uvtx](ac, y_src, f->cur.p.stride[0],
cbw4 - (furthest_r >> ss_hor),
cbh4 - (furthest_b >> ss_ver));
dsp->ipred.cfl_pred[cfl_uv_t_dim->lw](uv_dst[0],
uv_dst[1], stride,
ac, uv_pred,
b->cfl_alpha,
cbh4 * 4);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS) {
ac_dump(ac, 4*cbw4, 4*cbh4, "ac");
hex_dump(uv_dst[0], stride, cbw4 * 4, cbh4 * 4, "u-cfl-pred");
hex_dump(uv_dst[1], stride, cbw4 * 4, cbh4 * 4, "v-cfl-pred");
}
} else if (b->pal_sz[1]) {
ptrdiff_t uv_dstoff = 4 * ((t->bx >> ss_hor) +
(t->by >> ss_ver) * PXSTRIDE(f->cur.p.stride[1]));
const uint8_t *pal_idx;
if (f->frame_thread.pass) {
pal_idx = ts->frame_thread.pal_idx;
ts->frame_thread.pal_idx += cbw4 * cbh4 * 16;
} else {
pal_idx = &t->scratch.pal_idx[bw4 * bh4 * 16];
}
const uint16_t *const pal_u = f->frame_thread.pass ?
f->frame_thread.pal[((t->by >> 1) + (t->bx & 1)) * (f->b4_stride >> 1) +
((t->bx >> 1) + (t->by & 1))][1] : t->pal[1];
f->dsp->ipred.pal_pred(((pixel *) f->cur.p.data[1]) + uv_dstoff,
f->cur.p.stride[1], pal_u,
pal_idx, cbw4 * 4, cbh4 * 4);
const uint16_t *const pal_v = f->frame_thread.pass ?
f->frame_thread.pal[((t->by >> 1) + (t->bx & 1)) * (f->b4_stride >> 1) +
((t->bx >> 1) + (t->by & 1))][2] : t->pal[2];
f->dsp->ipred.pal_pred(((pixel *) f->cur.p.data[2]) + uv_dstoff,
f->cur.p.stride[1], pal_v,
pal_idx, cbw4 * 4, cbh4 * 4);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS) {
hex_dump(((pixel *) f->cur.p.data[1]) + uv_dstoff,
PXSTRIDE(f->cur.p.stride[1]),
cbw4 * 4, cbh4 * 4, "u-pal-pred");
hex_dump(((pixel *) f->cur.p.data[2]) + uv_dstoff,
PXSTRIDE(f->cur.p.stride[1]),
cbw4 * 4, cbh4 * 4, "v-pal-pred");
}
}
const int sm_uv_fl = sm_uv_flag(t->a, cbx4) |
sm_uv_flag(&t->l, cby4);
const int uv_sb_has_tr =
((init_x + 16) >> ss_hor) < cw4 ? 1 : init_y ? 0 :
intra_edge_flags & (EDGE_I420_TOP_HAS_RIGHT >> (f->cur.p.p.layout - 1));
const int uv_sb_has_bl =
init_x ? 0 : ((init_y + 16) >> ss_ver) < ch4 ? 1 :
intra_edge_flags & (EDGE_I420_LEFT_HAS_BOTTOM >> (f->cur.p.p.layout - 1));
const int sub_ch4 = imin(ch4, (init_y + 16) >> ss_ver);
const int sub_cw4 = imin(cw4, (init_x + 16) >> ss_hor);
for (int pl = 0; pl < 2; pl++) {
for (y = init_y >> ss_ver, t->by += init_y; y < sub_ch4;
y += uv_t_dim->h, t->by += uv_t_dim->h << ss_ver)
{
pixel *dst = ((pixel *) f->cur.p.data[1 + pl]) +
4 * ((t->by >> ss_ver) * PXSTRIDE(stride) +
((t->bx + init_x) >> ss_hor));
for (x = init_x >> ss_hor, t->bx += init_x; x < sub_cw4;
x += uv_t_dim->w, t->bx += uv_t_dim->w << ss_hor)
{
if (b->uv_mode == CFL_PRED || b->pal_sz[1])
goto skip_uv_pred;
int angle = b->uv_angle;
// this probably looks weird because we're using
// luma flags in a chroma loop, but that's because
// prepare_intra_edges() expects luma flags as input
const enum EdgeFlags edge_flags =
(((y > (init_y >> ss_ver) || !uv_sb_has_tr) &&
(x + uv_t_dim->w >= sub_cw4)) ?
0 : EDGE_I444_TOP_HAS_RIGHT) |
((x > (init_x >> ss_hor) ||
(!uv_sb_has_bl && y + uv_t_dim->h >= sub_ch4)) ?
0 : EDGE_I444_LEFT_HAS_BOTTOM);
const pixel *top_sb_edge = NULL;
if (!((t->by & ~ss_ver) & (f->sb_step - 1))) {
top_sb_edge = f->ipred_edge[1 + pl];
const int sby = t->by >> f->sb_shift;
top_sb_edge += f->sb128w * 128 * (sby - 1);
}
const enum IntraPredMode m =
bytefn(prepare_intra_edges)(t->bx >> ss_hor,
(t->bx >> ss_hor) >
(ts->tiling.col_start >> ss_hor),
t->by >> ss_ver,
(t->by >> ss_ver) >
(ts->tiling.row_start >> ss_ver),
ts->tiling.col_end >> ss_hor,
ts->tiling.row_end >> ss_ver,
edge_flags, dst, stride,
top_sb_edge, b->uv_mode,
&angle, uv_t_dim->w,
uv_t_dim->h, edge);
dsp->ipred.intra_pred[b->uvtx][m](dst, stride,
edge, angle | sm_uv_fl);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS) {
hex_dump(edge - uv_t_dim->h * 4, uv_t_dim->h * 4,
uv_t_dim->h * 4, 2, "l");
hex_dump(edge, 0, 1, 1, "tl");
hex_dump(edge + 1, uv_t_dim->w * 4,
uv_t_dim->w * 4, 2, "t");
hex_dump(dst, stride, uv_t_dim->w * 4,
uv_t_dim->h * 4, pl ? "v-intra-pred" : "u-intra-pred");
}
skip_uv_pred: {}
if (!b->skip) {
enum TxfmType txtp;
int eob;
coef *cf;
if (f->frame_thread.pass) {
cf = ts->frame_thread.cf;
ts->frame_thread.cf += uv_t_dim->w * uv_t_dim->h * 16;
const struct CodedBlockInfo *const cbi =
&f->frame_thread.cbi[t->by * f->b4_stride + t->bx];
eob = cbi->eob[pl + 1];
txtp = cbi->txtp[pl + 1];
} else {
uint8_t cf_ctx;
cf = t->cf;
eob = decode_coefs(t, &t->a->ccoef[pl][cbx4 + x],
&t->l.ccoef[pl][cby4 + y],
b->uvtx, bs, b, 1, 1 + pl, cf,
&txtp, &cf_ctx);
if (DEBUG_BLOCK_INFO)
printf("Post-uv-cf-blk[pl=%d,tx=%d,"
"txtp=%d,eob=%d]: r=%d [x=%d,cbx4=%d]\n",
pl, b->uvtx, txtp, eob, ts->msac.rng, x, cbx4);
memset(&t->a->ccoef[pl][cbx4 + x], cf_ctx,
imin(uv_t_dim->w, (f->bw - t->bx + ss_hor) >> ss_hor));
memset(&t->l.ccoef[pl][cby4 + y], cf_ctx,
imin(uv_t_dim->h, (f->bh - t->by + ss_ver) >> ss_ver));
}
if (eob >= 0) {
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
coef_dump(cf, uv_t_dim->h * 4,
uv_t_dim->w * 4, 3, "dq");
dsp->itx.itxfm_add[b->uvtx]
[txtp](dst, stride,
cf, eob);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
hex_dump(dst, stride, uv_t_dim->w * 4,
uv_t_dim->h * 4, "recon");
}
} else if (!f->frame_thread.pass) {
memset(&t->a->ccoef[pl][cbx4 + x], 0x40, uv_t_dim->w);
memset(&t->l.ccoef[pl][cby4 + y], 0x40, uv_t_dim->h);
}
dst += uv_t_dim->w * 4;
}
t->bx -= x << ss_hor;
}
t->by -= y << ss_ver;
}
}
}
}
void bytefn(recon_b_inter)(Dav1dTileContext *const t, const enum BlockSize bs,
const Av1Block *const b)
{
Dav1dTileState *const ts = t->ts;
const Dav1dFrameContext *const f = t->f;
const Dav1dDSPContext *const dsp = f->dsp;
const int bx4 = t->bx & 31, by4 = t->by & 31;
const int ss_ver = f->cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = f->cur.p.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int cbx4 = bx4 >> ss_hor, cby4 = by4 >> ss_ver;
const uint8_t *const b_dim = av1_block_dimensions[bs];
const int bw4 = b_dim[0], bh4 = b_dim[1];
const int w4 = imin(bw4, f->bw - t->bx), h4 = imin(bh4, f->bh - t->by);
const int has_chroma = f->seq_hdr.layout != DAV1D_PIXEL_LAYOUT_I400 &&
(bw4 > ss_hor || t->bx & 1) &&
(bh4 > ss_ver || t->by & 1);
const int chr_layout_idx = f->cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I400 ? 0 :
DAV1D_PIXEL_LAYOUT_I444 - f->cur.p.p.layout;
// prediction
const int cbh4 = (bh4 + ss_ver) >> ss_ver, cbw4 = (bw4 + ss_hor) >> ss_hor;
pixel *dst = ((pixel *) f->cur.p.data[0]) +
4 * (t->by * PXSTRIDE(f->cur.p.stride[0]) + t->bx);
const ptrdiff_t uvdstoff =
4 * ((t->bx >> ss_hor) + (t->by >> ss_ver) * PXSTRIDE(f->cur.p.stride[1]));
if (!(f->frame_hdr.frame_type & 1)) {
// intrabc
mc(t, dst, NULL, f->cur.p.stride[0],
bw4, bh4, t->bx, t->by, 0, b->mv[0], &f->cur, FILTER_2D_BILINEAR);
if (has_chroma) for (int pl = 1; pl < 3; pl++)
mc(t, ((pixel *) f->cur.p.data[pl]) + uvdstoff, NULL, f->cur.p.stride[1],
bw4 << (bw4 == ss_hor), bh4 << (bh4 == ss_ver),
t->bx & ~ss_hor, t->by & ~ss_ver,
pl, b->mv[0], &f->cur, FILTER_2D_BILINEAR);
} else if (b->comp_type == COMP_INTER_NONE) {
const Dav1dThreadPicture *const refp = &f->refp[b->ref[0]];
const enum Filter2d filter_2d = b->filter2d;
if (imin(bw4, bh4) > 1 &&
((b->inter_mode == GLOBALMV &&
f->frame_hdr.gmv[b->ref[0]].type > WM_TYPE_TRANSLATION) ||
(b->motion_mode == MM_WARP &&
t->warpmv.type > WM_TYPE_TRANSLATION)))
{
warp_affine(t, dst, NULL, f->cur.p.stride[0], b_dim, 0, refp,
b->motion_mode == MM_WARP ? &t->warpmv :
&f->frame_hdr.gmv[b->ref[0]]);
} else {
mc(t, dst, NULL, f->cur.p.stride[0],
bw4, bh4, t->bx, t->by, 0, b->mv[0], refp, filter_2d);
if (b->motion_mode == MM_OBMC)
obmc(t, dst, f->cur.p.stride[0], b_dim, 0, bx4, by4, w4, h4);
}
if (b->interintra_type) {
const enum RectTxfmSize ii_tx = av1_max_txfm_size_for_bs[bs][0];
pixel tl_edge_px[65], *const tl_edge = &tl_edge_px[32];
enum IntraPredMode m = b->interintra_mode == II_SMOOTH_PRED ?
SMOOTH_PRED : b->interintra_mode;
pixel *const tmp = t->scratch.interintra;
int angle = 0;
const pixel *top_sb_edge = NULL;
if (!(t->by & (f->sb_step - 1))) {
top_sb_edge = f->ipred_edge[0];
const int sby = t->by >> f->sb_shift;
top_sb_edge += f->sb128w * 128 * (sby - 1);
}
m = bytefn(prepare_intra_edges)(t->bx, t->bx > ts->tiling.col_start,
t->by, t->by > ts->tiling.row_start,
ts->tiling.col_end, ts->tiling.row_end,
0, dst, f->cur.p.stride[0], top_sb_edge,
m, &angle, bw4, bh4, tl_edge);
dsp->ipred.intra_pred[ii_tx][m](tmp, 4 * bw4 * sizeof(pixel), tl_edge, 0);
const uint8_t *const ii_mask =
b->interintra_type == INTER_INTRA_BLEND ?
ii_masks[bs][0][b->interintra_mode] :
wedge_masks[bs][0][0][b->wedge_idx];
dsp->mc.blend(dst, f->cur.p.stride[0], tmp, bw4 * 4 * sizeof(pixel),
bw4 * 4, bh4 * 4, ii_mask, bw4 * 4);
}
if (!has_chroma) goto skip_inter_chroma_pred;
// sub8x8 derivation
int is_sub8x8 = bw4 == ss_hor || bh4 == ss_ver;
refmvs *r;
if (is_sub8x8) {
assert(ss_hor == 1);
r = &f->mvs[t->by * f->b4_stride + t->bx];
if (bw4 == 1) is_sub8x8 &= r[-1].ref[0] > 0;
if (bh4 == ss_ver) is_sub8x8 &= r[-f->b4_stride].ref[0] > 0;
if (bw4 == 1 && bh4 == ss_ver)
is_sub8x8 &= r[-(1 + f->b4_stride)].ref[0] > 0;
}
// chroma prediction
if (is_sub8x8) {
assert(ss_hor == 1);
int h_off = 0, v_off = 0;
if (bw4 == 1 && bh4 == ss_ver) {
for (int pl = 0; pl < 2; pl++)
mc(t, ((pixel *) f->cur.p.data[1 + pl]) + uvdstoff,
NULL, f->cur.p.stride[1],
bw4, bh4, t->bx - 1, t->by - 1, 1 + pl,
r[-(f->b4_stride + 1)].mv[0],
&f->refp[r[-(f->b4_stride + 1)].ref[0] - 1],
f->frame_thread.pass != 2 ? t->tl_4x4_filter :
f->frame_thread.b[((t->by - 1) * f->b4_stride) + t->bx - 1].filter2d);
v_off = 2 * PXSTRIDE(f->cur.p.stride[1]);
h_off = 2;
}
if (bw4 == 1) {
const enum Filter2d left_filter_2d =
av1_filter_2d[t->l.filter[1][by4]][t->l.filter[0][by4]];
for (int pl = 0; pl < 2; pl++)
mc(t, ((pixel *) f->cur.p.data[1 + pl]) + uvdstoff + v_off, NULL,
f->cur.p.stride[1], bw4, bh4, t->bx - 1,
t->by, 1 + pl, r[-1].mv[0], &f->refp[r[-1].ref[0] - 1],
f->frame_thread.pass != 2 ? left_filter_2d :
f->frame_thread.b[(t->by * f->b4_stride) + t->bx - 1].filter2d);
h_off = 2;
}
if (bh4 == ss_ver) {
const enum Filter2d top_filter_2d =
av1_filter_2d[t->a->filter[1][bx4]][t->a->filter[0][bx4]];
for (int pl = 0; pl < 2; pl++)
mc(t, ((pixel *) f->cur.p.data[1 + pl]) + uvdstoff + h_off, NULL,
f->cur.p.stride[1], bw4, bh4, t->bx, t->by - 1,
1 + pl, r[-f->b4_stride].mv[0],
&f->refp[r[-f->b4_stride].ref[0] - 1],
f->frame_thread.pass != 2 ? top_filter_2d :
f->frame_thread.b[((t->by - 1) * f->b4_stride) + t->bx].filter2d);
v_off = 2 * PXSTRIDE(f->cur.p.stride[1]);
}
for (int pl = 0; pl < 2; pl++)
mc(t, ((pixel *) f->cur.p.data[1 + pl]) + uvdstoff + h_off + v_off, NULL, f->cur.p.stride[1],
bw4, bh4, t->bx, t->by, 1 + pl, b->mv[0], refp, filter_2d);
} else {
if (imin(cbw4, cbh4) > 1 &&
((b->inter_mode == GLOBALMV &&
f->frame_hdr.gmv[b->ref[0]].type > WM_TYPE_TRANSLATION) ||
(b->motion_mode == MM_WARP &&
t->warpmv.type > WM_TYPE_TRANSLATION)))
{
for (int pl = 0; pl < 2; pl++)
warp_affine(t, ((pixel *) f->cur.p.data[1 + pl]) + uvdstoff, NULL,
f->cur.p.stride[1], b_dim, 1 + pl, refp,
b->motion_mode == MM_WARP ? &t->warpmv :
&f->frame_hdr.gmv[b->ref[0]]);
} else {
for (int pl = 0; pl < 2; pl++) {
mc(t, ((pixel *) f->cur.p.data[1 + pl]) + uvdstoff,
NULL, f->cur.p.stride[1],
bw4 << (bw4 == ss_hor), bh4 << (bh4 == ss_ver),
t->bx & ~ss_hor, t->by & ~ss_ver,
1 + pl, b->mv[0], refp, filter_2d);
if (b->motion_mode == MM_OBMC)
obmc(t, ((pixel *) f->cur.p.data[1 + pl]) + uvdstoff,
f->cur.p.stride[1], b_dim, 1 + pl, bx4, by4, w4, h4);
}
}
if (b->interintra_type) {
// FIXME for 8x32 with 4:2:2 subsampling, this probably does
// the wrong thing since it will select 4x16, not 4x32, as a
// transform size...
const enum RectTxfmSize ii_tx =
av1_max_txfm_size_for_bs[bs][f->cur.p.p.layout];
const uint8_t *const ii_mask =
b->interintra_type == INTER_INTRA_BLEND ?
ii_masks[bs][chr_layout_idx][b->interintra_mode] :
wedge_masks[bs][chr_layout_idx][0][b->wedge_idx];
for (int pl = 0; pl < 2; pl++) {
pixel *const tmp = t->scratch.interintra;
pixel tl_edge_px[65], *const tl_edge = &tl_edge_px[32];
enum IntraPredMode m =
b->interintra_mode == II_SMOOTH_PRED ?
SMOOTH_PRED : b->interintra_mode;
int angle = 0;
pixel *const uvdst = ((pixel *) f->cur.p.data[1 + pl]) + uvdstoff;
const pixel *top_sb_edge = NULL;
if (!(t->by & (f->sb_step - 1))) {
top_sb_edge = f->ipred_edge[pl + 1];
const int sby = t->by >> f->sb_shift;
top_sb_edge += f->sb128w * 128 * (sby - 1);
}
m = bytefn(prepare_intra_edges)(t->bx >> ss_hor,
(t->bx >> ss_hor) >
(ts->tiling.col_start >> ss_hor),
t->by >> ss_ver,
(t->by >> ss_ver) >
(ts->tiling.row_start >> ss_ver),
ts->tiling.col_end >> ss_hor,
ts->tiling.row_end >> ss_ver,
0, uvdst, f->cur.p.stride[1],
top_sb_edge, m,
&angle, cbw4, cbh4, tl_edge);
dsp->ipred.intra_pred[ii_tx][m](tmp, cbw4 * 4 * sizeof(pixel), tl_edge, 0);
dsp->mc.blend(uvdst, f->cur.p.stride[1], tmp, cbw4 * 4 * sizeof(pixel),
cbw4 * 4, cbh4 * 4, ii_mask, cbw4 * 4);
}
}
}
skip_inter_chroma_pred: {}
t->tl_4x4_filter = filter_2d;
} else {
const enum Filter2d filter_2d = b->filter2d;
coef (*tmp)[bw4 * bh4 * 16] = (coef (*)[bw4 * bh4 * 16]) t->scratch.compinter;
int jnt_weight;
uint8_t *const seg_mask = t->scratch_seg_mask;
const uint8_t *mask;
for (int i = 0; i < 2; i++) {
const Dav1dThreadPicture *const refp = &f->refp[b->ref[i]];
if (b->inter_mode == GLOBALMV_GLOBALMV &&
f->frame_hdr.gmv[b->ref[i]].type > WM_TYPE_TRANSLATION)
{
warp_affine(t, NULL, tmp[i], bw4 * 4, b_dim, 0, refp,
&f->frame_hdr.gmv[b->ref[i]]);
} else {
mc(t, NULL, tmp[i], 0, bw4, bh4, t->bx, t->by, 0,
b->mv[i], refp, filter_2d);
}
}
switch (b->comp_type) {
case COMP_INTER_AVG:
dsp->mc.avg(dst, f->cur.p.stride[0], tmp[0], tmp[1],
bw4 * 4, bh4 * 4);
break;
case COMP_INTER_WEIGHTED_AVG:
jnt_weight = f->jnt_weights[b->ref[0]][b->ref[1]];
dsp->mc.w_avg(dst, f->cur.p.stride[0], tmp[0], tmp[1],
bw4 * 4, bh4 * 4, jnt_weight);
break;
case COMP_INTER_SEG:
dsp->mc.w_mask[chr_layout_idx](dst, f->cur.p.stride[0],
tmp[b->mask_sign], tmp[!b->mask_sign],
bw4 * 4, bh4 * 4, seg_mask, b->mask_sign);
mask = seg_mask;
break;
case COMP_INTER_WEDGE:
mask = wedge_masks[bs][0][0][b->wedge_idx];
dsp->mc.mask(dst, f->cur.p.stride[0],
tmp[b->mask_sign], tmp[!b->mask_sign],
bw4 * 4, bh4 * 4, mask);
if (has_chroma)
mask = wedge_masks[bs][chr_layout_idx][b->mask_sign][b->wedge_idx];
break;
}
// chroma
if (has_chroma) for (int pl = 0; pl < 2; pl++) {
for (int i = 0; i < 2; i++) {
const Dav1dThreadPicture *const refp = &f->refp[b->ref[i]];
if (b->inter_mode == GLOBALMV_GLOBALMV &&
imin(cbw4, cbh4) > 1 &&
f->frame_hdr.gmv[b->ref[i]].type > WM_TYPE_TRANSLATION)
{
warp_affine(t, NULL, tmp[i], bw4 * 2, b_dim, 1 + pl,
refp, &f->frame_hdr.gmv[b->ref[i]]);
} else {
mc(t, NULL, tmp[i], 0, bw4, bh4, t->bx, t->by,
1 + pl, b->mv[i], refp, filter_2d);
}
}
pixel *const uvdst = ((pixel *) f->cur.p.data[1 + pl]) + uvdstoff;
switch (b->comp_type) {
case COMP_INTER_AVG:
dsp->mc.avg(uvdst, f->cur.p.stride[1], tmp[0], tmp[1],
bw4 * 4 >> ss_hor, bh4 * 4 >> ss_ver);
break;
case COMP_INTER_WEIGHTED_AVG:
dsp->mc.w_avg(uvdst, f->cur.p.stride[1], tmp[0], tmp[1],
bw4 * 4 >> ss_hor, bh4 * 4 >> ss_ver, jnt_weight);
break;
case COMP_INTER_WEDGE:
case COMP_INTER_SEG:
dsp->mc.mask(uvdst, f->cur.p.stride[1],
tmp[b->mask_sign], tmp[!b->mask_sign],
bw4 * 4 >> ss_hor, bh4 * 4 >> ss_ver, mask);
break;
}
}
}
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS) {
hex_dump(dst, f->cur.p.stride[0], b_dim[0] * 4, b_dim[1] * 4, "y-pred");
if (has_chroma) {
hex_dump(&((pixel *) f->cur.p.data[1])[uvdstoff], f->cur.p.stride[1],
cbw4 * 4, cbh4 * 4, "u-pred");
hex_dump(&((pixel *) f->cur.p.data[2])[uvdstoff], f->cur.p.stride[1],
cbw4 * 4, cbh4 * 4, "v-pred");
}
}
const int cw4 = (w4 + ss_hor) >> ss_hor, ch4 = (h4 + ss_ver) >> ss_ver;
if (b->skip) {
// reset coef contexts
memset(&t->a->lcoef[bx4], 0x40, w4);
memset(&t->l.lcoef[by4], 0x40, h4);
if (has_chroma) {
memset(&t->a->ccoef[0][cbx4], 0x40, cw4);
memset(&t->l.ccoef[0][cby4], 0x40, ch4);
memset(&t->a->ccoef[1][cbx4], 0x40, cw4);
memset(&t->l.ccoef[1][cby4], 0x40, ch4);
}
return;
}
const TxfmInfo *const uvtx = &av1_txfm_dimensions[b->uvtx];
const TxfmInfo *const ytx = &av1_txfm_dimensions[b->max_ytx];
for (int init_y = 0; init_y < bh4; init_y += 16) {
for (int init_x = 0; init_x < bw4; init_x += 16) {
// coefficient coding & inverse transforms
int y_off = !!init_y, y;
dst += PXSTRIDE(f->cur.p.stride[0]) * 4 * init_y;
for (y = init_y, t->by += init_y; y < imin(h4, init_y + 16);
y += ytx->h, y_off++)
{
int x, x_off = !!init_x;
for (x = init_x, t->bx += init_x; x < imin(w4, init_x + 16);
x += ytx->w, x_off++)
{
read_coef_tree(t, bs, b, b->max_ytx, 0, b->tx_split,
x_off, y_off, &dst[x * 4]);
t->bx += ytx->w;
}
dst += PXSTRIDE(f->cur.p.stride[0]) * 4 * ytx->h;
t->bx -= x;
t->by += ytx->h;
}
dst -= PXSTRIDE(f->cur.p.stride[0]) * 4 * y;
t->by -= y;
// chroma coefs and inverse transform
if (has_chroma) for (int pl = 0; pl < 2; pl++) {
pixel *uvdst = ((pixel *) f->cur.p.data[1 + pl]) + uvdstoff +
(PXSTRIDE(f->cur.p.stride[1]) * init_y * 4 >> ss_ver);
for (y = init_y >> ss_ver, t->by += init_y;
y < imin(ch4, (init_y + 16) >> ss_ver); y += uvtx->h)
{
int x;
for (x = init_x >> ss_hor, t->bx += init_x;
x < imin(cw4, (init_x + 16) >> ss_hor); x += uvtx->w)
{
coef *cf;
int eob;
enum TxfmType txtp;
if (f->frame_thread.pass) {
cf = ts->frame_thread.cf;
ts->frame_thread.cf += uvtx->w * uvtx->h * 16;
const struct CodedBlockInfo *const cbi =
&f->frame_thread.cbi[t->by * f->b4_stride + t->bx];
eob = cbi->eob[1 + pl];
txtp = cbi->txtp[1 + pl];
} else {
uint8_t cf_ctx;
cf = t->cf;
txtp = t->txtp_map[(by4 + (y << ss_ver)) * 32 +
bx4 + (x << ss_hor)];
eob = decode_coefs(t, &t->a->ccoef[pl][cbx4 + x],
&t->l.ccoef[pl][cby4 + y],
b->uvtx, bs, b, 0, 1 + pl,
cf, &txtp, &cf_ctx);
if (DEBUG_BLOCK_INFO)
printf("Post-uv-cf-blk[pl=%d,tx=%d,"
"txtp=%d,eob=%d]: r=%d\n",
pl, b->uvtx, txtp, eob, ts->msac.rng);
memset(&t->a->ccoef[pl][cbx4 + x], cf_ctx,
imin(uvtx->w, (f->bw - t->bx + ss_hor) >> ss_hor));
memset(&t->l.ccoef[pl][cby4 + y], cf_ctx,
imin(uvtx->h, (f->bh - t->by + ss_ver) >> ss_ver));
}
if (eob >= 0) {
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
coef_dump(cf, uvtx->h * 4, uvtx->w * 4, 3, "dq");
dsp->itx.itxfm_add[b->uvtx]
[txtp](&uvdst[4 * x],
f->cur.p.stride[1],
cf, eob);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
hex_dump(&uvdst[4 * x], f->cur.p.stride[1],
uvtx->w * 4, uvtx->h * 4, "recon");
}
t->bx += uvtx->w << ss_hor;
}
uvdst += PXSTRIDE(f->cur.p.stride[1]) * 4 * uvtx->h;
t->bx -= x << ss_hor;
t->by += uvtx->h << ss_ver;
}
t->by -= y << ss_ver;
}
}
}
}
void bytefn(filter_sbrow)(Dav1dFrameContext *const f, const int sby) {
const int ss_ver = f->cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int sbsz = f->sb_step, sbh = f->sbh;
if (f->frame_hdr.loopfilter.level_y[0] ||
f->frame_hdr.loopfilter.level_y[1])
{
int start_of_tile_row = 0;
if (f->frame_hdr.tiling.row_start_sb[f->lf.tile_row] == sby)
start_of_tile_row = f->lf.tile_row++;
bytefn(dav1d_loopfilter_sbrow)(f, f->lf.p, f->lf.mask_ptr, sby,
start_of_tile_row);
}
if (f->seq_hdr.restoration) {
// Store loop filtered pixels required by loop restoration
bytefn(dav1d_lr_copy_lpf)(f, f->lf.p, sby);
}
if (f->seq_hdr.cdef) {
if (sby) {
pixel *p_up[3] = {
f->lf.p[0] - 8 * PXSTRIDE(f->cur.p.stride[0]),
f->lf.p[1] - (8 * PXSTRIDE(f->cur.p.stride[1]) >> ss_ver),
f->lf.p[2] - (8 * PXSTRIDE(f->cur.p.stride[1]) >> ss_ver),
};
bytefn(dav1d_cdef_brow)(f, p_up, f->lf.prev_mask_ptr,
sby * sbsz - 2, sby * sbsz);
}
const int n_blks = sbsz - 2 * (sby + 1 < sbh);
bytefn(dav1d_cdef_brow)(f, f->lf.p, f->lf.mask_ptr, sby * sbsz,
imin(sby * sbsz + n_blks, f->bh));
}
if (f->seq_hdr.restoration) {
bytefn(dav1d_lr_sbrow)(f, f->lf.p, sby);
}
f->lf.p[0] += sbsz * 4 * PXSTRIDE(f->cur.p.stride[0]);
f->lf.p[1] += sbsz * 4 * PXSTRIDE(f->cur.p.stride[1]) >> ss_ver;
f->lf.p[2] += sbsz * 4 * PXSTRIDE(f->cur.p.stride[1]) >> ss_ver;
f->lf.prev_mask_ptr = f->lf.mask_ptr;
if ((sby & 1) || f->seq_hdr.sb128) {
f->lf.mask_ptr += f->sb128w;
}
}
void bytefn(backup_ipred_edge)(Dav1dTileContext *const t) {
const Dav1dFrameContext *const f = t->f;
Dav1dTileState *const ts = t->ts;
const int sby = t->by >> f->sb_shift;
const int sby_off = f->sb128w * 128 * sby;
const int x_off = ts->tiling.col_start;
const pixel *const y =
((const pixel *) f->cur.p.data[0]) + x_off * 4 +
((t->by + f->sb_step) * 4 - 1) * PXSTRIDE(f->cur.p.stride[0]);
pixel_copy(&f->ipred_edge[0][sby_off + x_off * 4], y,
4 * (ts->tiling.col_end - x_off));
if (f->cur.p.p.layout != DAV1D_PIXEL_LAYOUT_I400) {
const int ss_ver = f->cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = f->cur.p.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const ptrdiff_t uv_off = (x_off * 4 >> ss_hor) +
(((t->by + f->sb_step) * 4 >> ss_ver) - 1) * PXSTRIDE(f->cur.p.stride[1]);
for (int pl = 1; pl <= 2; pl++)
pixel_copy(&f->ipred_edge[pl][sby_off + (x_off * 4 >> ss_hor)],
&((const pixel *) f->cur.p.data[pl])[uv_off],
4 * (ts->tiling.col_end - x_off) >> ss_hor);
}
}