ref: 2c09aaa4d7e0f96ca5a4cdefb6a04d0cf7e0bf4b
dir: /src/recon_tmpl.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/ctx.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 inline unsigned read_golomb(MsacContext *const msac) {
int len = 0;
unsigned val = 1;
while (!dav1d_msac_decode_bool_equi(msac) && len < 32) len++;
while (len--) val = (val << 1) + dav1d_msac_decode_bool_equi(msac);
return val - 1;
}
static inline unsigned get_skip_ctx(const TxfmInfo *const t_dim,
const enum BlockSize bs,
const uint8_t *const a,
const uint8_t *const l,
const int chroma,
const enum Dav1dPixelLayout layout)
{
const uint8_t *const b_dim = dav1d_block_dimensions[bs];
if (chroma) {
const int ss_ver = layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = layout != DAV1D_PIXEL_LAYOUT_I444;
const int not_one_blk = b_dim[2] - (!!b_dim[2] && ss_hor) > t_dim->lw ||
b_dim[3] - (!!b_dim[3] && ss_ver) > t_dim->lh;
unsigned ca, cl;
#define MERGE_CTX(dir, type, no_val) \
c##dir = *(const type *) dir != no_val; \
break
switch (t_dim->lw) {
/* For some reason the MSVC CRT _wassert() function is not flagged as
* __declspec(noreturn), so when using those headers the compiler will
* expect execution to continue after an assertion has been triggered
* and will therefore complain about the use of uninitialized variables
* when compiled in debug mode if we put the default case at the end. */
default: assert(0); /* fall-through */
case TX_4X4: MERGE_CTX(a, uint8_t, 0x40);
case TX_8X8: MERGE_CTX(a, uint16_t, 0x4040);
case TX_16X16: MERGE_CTX(a, uint32_t, 0x40404040U);
case TX_32X32: MERGE_CTX(a, uint64_t, 0x4040404040404040ULL);
}
switch (t_dim->lh) {
default: assert(0); /* fall-through */
case TX_4X4: MERGE_CTX(l, uint8_t, 0x40);
case TX_8X8: MERGE_CTX(l, uint16_t, 0x4040);
case TX_16X16: MERGE_CTX(l, uint32_t, 0x40404040U);
case TX_32X32: MERGE_CTX(l, uint64_t, 0x4040404040404040ULL);
}
#undef MERGE_CTX
return 7 + not_one_blk * 3 + ca + cl;
} else if (b_dim[2] == t_dim->lw && b_dim[3] == t_dim->lh) {
return 0;
} else {
unsigned la, ll;
#define MERGE_CTX(dir, type, tx) \
if (tx == TX_64X64) { \
uint64_t tmp = *(const uint64_t *) dir; \
tmp |= *(const uint64_t *) &dir[8]; \
l##dir = (unsigned) (tmp >> 32) | (unsigned) tmp; \
} else \
l##dir = *(const type *) dir; \
if (tx == TX_32X32) l##dir |= *(const type *) &dir[sizeof(type)]; \
if (tx >= TX_16X16) l##dir |= l##dir >> 16; \
if (tx >= TX_8X8) l##dir |= l##dir >> 8; \
break
switch (t_dim->lw) {
default: assert(0); /* fall-through */
case TX_4X4: MERGE_CTX(a, uint8_t, TX_4X4);
case TX_8X8: MERGE_CTX(a, uint16_t, TX_8X8);
case TX_16X16: MERGE_CTX(a, uint32_t, TX_16X16);
case TX_32X32: MERGE_CTX(a, uint32_t, TX_32X32);
case TX_64X64: MERGE_CTX(a, uint32_t, TX_64X64);
}
switch (t_dim->lh) {
default: assert(0); /* fall-through */
case TX_4X4: MERGE_CTX(l, uint8_t, TX_4X4);
case TX_8X8: MERGE_CTX(l, uint16_t, TX_8X8);
case TX_16X16: MERGE_CTX(l, uint32_t, TX_16X16);
case TX_32X32: MERGE_CTX(l, uint32_t, TX_32X32);
case TX_64X64: MERGE_CTX(l, uint32_t, TX_64X64);
}
#undef MERGE_CTX
return dav1d_skip_ctx[umin(la & 0x3F, 4)][umin(ll & 0x3F, 4)];
}
}
static inline unsigned get_dc_sign_ctx(const int /*enum RectTxfmSize*/ tx,
const uint8_t *const a,
const uint8_t *const l)
{
uint64_t mask = 0xC0C0C0C0C0C0C0C0ULL, mul = 0x0101010101010101ULL;
int s;
#if ARCH_X86_64 && defined(__GNUC__)
/* Coerce compilers into producing better code. For some reason
* every x86-64 compiler is awful at handling 64-bit constants. */
__asm__("" : "+r"(mask), "+r"(mul));
#endif
switch(tx) {
default: assert(0); /* fall-through */
case TX_4X4: {
int t = *(const uint8_t *) a >> 6;
t += *(const uint8_t *) l >> 6;
s = t - 1 - 1;
break;
}
case TX_8X8: {
uint32_t t = *(const uint16_t *) a & (uint32_t) mask;
t += *(const uint16_t *) l & (uint32_t) mask;
t *= 0x04040404U;
s = (int) (t >> 24) - 2 - 2;
break;
}
case TX_16X16: {
uint32_t t = (*(const uint32_t *) a & (uint32_t) mask) >> 6;
t += (*(const uint32_t *) l & (uint32_t) mask) >> 6;
t *= (uint32_t) mul;
s = (int) (t >> 24) - 4 - 4;
break;
}
case TX_32X32: {
uint64_t t = (*(const uint64_t *) a & mask) >> 6;
t += (*(const uint64_t *) l & mask) >> 6;
t *= mul;
s = (int) (t >> 56) - 8 - 8;
break;
}
case TX_64X64: {
uint64_t t = (*(const uint64_t *) &a[0] & mask) >> 6;
t += (*(const uint64_t *) &a[8] & mask) >> 6;
t += (*(const uint64_t *) &l[0] & mask) >> 6;
t += (*(const uint64_t *) &l[8] & mask) >> 6;
t *= mul;
s = (int) (t >> 56) - 16 - 16;
break;
}
case RTX_4X8: {
uint32_t t = *(const uint8_t *) a & (uint32_t) mask;
t += *(const uint16_t *) l & (uint32_t) mask;
t *= 0x04040404U;
s = (int) (t >> 24) - 1 - 2;
break;
}
case RTX_8X4: {
uint32_t t = *(const uint16_t *) a & (uint32_t) mask;
t += *(const uint8_t *) l & (uint32_t) mask;
t *= 0x04040404U;
s = (int) (t >> 24) - 2 - 1;
break;
}
case RTX_8X16: {
uint32_t t = *(const uint16_t *) a & (uint32_t) mask;
t += *(const uint32_t *) l & (uint32_t) mask;
t = (t >> 6) * (uint32_t) mul;
s = (int) (t >> 24) - 2 - 4;
break;
}
case RTX_16X8: {
uint32_t t = *(const uint32_t *) a & (uint32_t) mask;
t += *(const uint16_t *) l & (uint32_t) mask;
t = (t >> 6) * (uint32_t) mul;
s = (int) (t >> 24) - 4 - 2;
break;
}
case RTX_16X32: {
uint64_t t = *(const uint32_t *) a & (uint32_t) mask;
t += *(const uint64_t *) l & mask;
t = (t >> 6) * mul;
s = (int) (t >> 56) - 4 - 8;
break;
}
case RTX_32X16: {
uint64_t t = *(const uint64_t *) a & mask;
t += *(const uint32_t *) l & (uint32_t) mask;
t = (t >> 6) * mul;
s = (int) (t >> 56) - 8 - 4;
break;
}
case RTX_32X64: {
uint64_t t = (*(const uint64_t *) &a[0] & mask) >> 6;
t += (*(const uint64_t *) &l[0] & mask) >> 6;
t += (*(const uint64_t *) &l[8] & mask) >> 6;
t *= mul;
s = (int) (t >> 56) - 8 - 16;
break;
}
case RTX_64X32: {
uint64_t t = (*(const uint64_t *) &a[0] & mask) >> 6;
t += (*(const uint64_t *) &a[8] & mask) >> 6;
t += (*(const uint64_t *) &l[0] & mask) >> 6;
t *= mul;
s = (int) (t >> 56) - 16 - 8;
break;
}
case RTX_4X16: {
uint32_t t = *(const uint8_t *) a & (uint32_t) mask;
t += *(const uint32_t *) l & (uint32_t) mask;
t = (t >> 6) * (uint32_t) mul;
s = (int) (t >> 24) - 1 - 4;
break;
}
case RTX_16X4: {
uint32_t t = *(const uint32_t *) a & (uint32_t) mask;
t += *(const uint8_t *) l & (uint32_t) mask;
t = (t >> 6) * (uint32_t) mul;
s = (int) (t >> 24) - 4 - 1;
break;
}
case RTX_8X32: {
uint64_t t = *(const uint16_t *) a & (uint32_t) mask;
t += *(const uint64_t *) l & mask;
t = (t >> 6) * mul;
s = (int) (t >> 56) - 2 - 8;
break;
}
case RTX_32X8: {
uint64_t t = *(const uint64_t *) a & mask;
t += *(const uint16_t *) l & (uint32_t) mask;
t = (t >> 6) * mul;
s = (int) (t >> 56) - 8 - 2;
break;
}
case RTX_16X64: {
uint64_t t = *(const uint32_t *) a & (uint32_t) mask;
t += *(const uint64_t *) &l[0] & mask;
t = (t >> 6) + ((*(const uint64_t *) &l[8] & mask) >> 6);
t *= mul;
s = (int) (t >> 56) - 4 - 16;
break;
}
case RTX_64X16: {
uint64_t t = *(const uint64_t *) &a[0] & mask;
t += *(const uint32_t *) l & (uint32_t) mask;
t = (t >> 6) + ((*(const uint64_t *) &a[8] & mask) >> 6);
t *= mul;
s = (int) (t >> 56) - 16 - 4;
break;
}
}
return (s != 0) + (s > 0);
}
static inline unsigned get_lo_ctx(const uint8_t *const levels,
const enum TxClass tx_class,
unsigned *const hi_mag,
const uint8_t (*const ctx_offsets)[5],
const unsigned x, const unsigned y,
const ptrdiff_t stride)
{
unsigned mag = levels[0 * stride + 1] + levels[1 * stride + 0];
unsigned offset;
if (tx_class == TX_CLASS_2D) {
mag += levels[1 * stride + 1];
*hi_mag = mag;
mag += levels[0 * stride + 2] + levels[2 * stride + 0];
offset = ctx_offsets[umin(y, 4)][umin(x, 4)];
} else {
mag += levels[0 * stride + 2];
*hi_mag = mag;
mag += levels[0 * stride + 3] + levels[0 * stride + 4];
offset = 26 + (y > 1 ? 10 : y * 5);
}
return offset + (mag > 512 ? 4 : (mag + 64) >> 7);
}
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 int lossless = f->frame_hdr->segmentation.lossless[b->seg_id];
const TxfmInfo *const t_dim = &dav1d_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_skip_ctx(t_dim, bs, a, l, chroma, f->cur.p.layout);
const int all_skip = dav1d_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 = lossless * WHT_WHT; /* lossless ? WHT_WHT : DCT_DCT */
return -1;
}
// transform type (chroma: derived, luma: explicitly coded)
if (lossless) {
assert(t_dim->max == TX_4X4);
*txtp = WHT_WHT;
} else if (t_dim->max + intra >= TX_64X64) {
*txtp = DCT_DCT;
} else if (chroma) {
// inferred from either the luma txtp (inter) or a LUT (intra)
*txtp = intra ? dav1d_txtp_from_uvmode[b->uv_mode] :
get_uv_inter_txtp(t_dim, *txtp);
} else if (!f->frame_hdr->segmentation.qidx[b->seg_id]) {
// In libaom, lossless is checked by a literal qidx == 0, but not all
// such blocks are actually lossless. The remainder gets an implicit
// transform type (for luma)
*txtp = DCT_DCT;
} else {
unsigned idx;
if (intra) {
const enum IntraPredMode y_mode_nofilt = b->y_mode == FILTER_PRED ?
dav1d_filter_mode_to_y_mode[b->y_angle] : b->y_mode;
if (f->frame_hdr->reduced_txtp_set || t_dim->min == TX_16X16) {
idx = dav1d_msac_decode_symbol_adapt4(&ts->msac,
ts->cdf.m.txtp_intra2[t_dim->min][y_mode_nofilt], 4);
*txtp = dav1d_tx_types_per_set[idx + 0];
} else {
idx = dav1d_msac_decode_symbol_adapt8(&ts->msac,
ts->cdf.m.txtp_intra1[t_dim->min][y_mode_nofilt], 6);
*txtp = dav1d_tx_types_per_set[idx + 5];
}
if (dbg)
printf("Post-txtp-intra[%d->%d][%d][%d->%d]: r=%d\n",
tx, t_dim->min, y_mode_nofilt, idx, *txtp, ts->msac.rng);
} else {
if (f->frame_hdr->reduced_txtp_set || t_dim->max == TX_32X32) {
idx = dav1d_msac_decode_bool_adapt(&ts->msac,
ts->cdf.m.txtp_inter3[t_dim->min]);
*txtp = (idx - 1) & IDTX; /* idx ? DCT_DCT : IDTX */
} else if (t_dim->min == TX_16X16) {
idx = dav1d_msac_decode_symbol_adapt16(&ts->msac,
ts->cdf.m.txtp_inter2, 11);
*txtp = dav1d_tx_types_per_set[idx + 12];
} else {
idx = dav1d_msac_decode_symbol_adapt16(&ts->msac,
ts->cdf.m.txtp_inter1[t_dim->min], 15);
*txtp = dav1d_tx_types_per_set[idx + 24];
}
if (dbg)
printf("Post-txtp-inter[%d->%d][%d->%d]: r=%d\n",
tx, t_dim->min, idx, *txtp, ts->msac.rng);
}
}
// 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 = dav1d_tx_type_class[*txtp];
const int is_1d = tx_class != TX_CLASS_2D;
switch (tx2dszctx) {
#define case_sz(sz, bin, ns, is_1d) \
case sz: { \
uint16_t *const eob_bin_cdf = ts->cdf.coef.eob_bin_##bin[chroma]is_1d; \
eob_bin = dav1d_msac_decode_symbol_adapt##ns(&ts->msac, eob_bin_cdf, 4 + sz); \
break; \
}
case_sz(0, 16, 4, [is_1d]);
case_sz(1, 32, 8, [is_1d]);
case_sz(2, 64, 8, [is_1d]);
case_sz(3, 128, 8, [is_1d]);
case_sz(4, 256, 16, [is_1d]);
case_sz(5, 512, 16, );
case_sz(6, 1024, 16, );
#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) {
uint16_t *const eob_hi_bit_cdf =
ts->cdf.coef.eob_hi_bit[t_dim->ctx][chroma][eob_bin];
const int eob_hi_bit = dav1d_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);
eob = ((eob_hi_bit | 2) << (eob_bin - 2)) |
dav1d_msac_decode_bools(&ts->msac, eob_bin - 2);
if (dbg)
printf("Post-eob[%d]: r=%d\n", eob, ts->msac.rng);
} else {
eob = eob_bin;
}
// base tokens
uint16_t (*const eob_cdf)[4] = ts->cdf.coef.eob_base_tok[t_dim->ctx][chroma];
uint16_t (*const hi_cdf)[4] = ts->cdf.coef.br_tok[imin(t_dim->ctx, 3)][chroma];
const uint16_t *const scan = dav1d_scans[tx][tx_class];
int dc_tok;
if (eob) {
uint16_t (*const lo_cdf)[4] = ts->cdf.coef.base_tok[t_dim->ctx][chroma];
uint8_t *const levels = t->scratch.levels; // bits 0-5: tok, 6-7: lo_tok
const int sw = imin(t_dim->w, 8), sh = imin(t_dim->h, 8);
const unsigned shift = 2 + imin(t_dim->lh, 3), mask = 4 * sh - 1;
/* eob */
unsigned rc = scan[eob], x = rc >> shift, y = rc & mask;
unsigned ctx = 1 + (eob > sw * sh * 2) + (eob > sw * sh * 4);
int eob_tok = dav1d_msac_decode_symbol_adapt4(&ts->msac, eob_cdf[ctx], 2);
int tok = eob_tok + 1;
int level_tok = tok * 0x41;
unsigned mag;
if (dbg)
printf("Post-lo_tok[%d][%d][%d][%d=%d=%d]: r=%d\n",
t_dim->ctx, chroma, ctx, eob, rc, tok, ts->msac.rng);
#define DECODE_COEFS_CLASS(tx_class) \
if (eob_tok == 2) { \
ctx = (tx_class == TX_CLASS_2D ? (x | y) > 1 : \
tx_class == TX_CLASS_H ? x != 0 : y != 0) ? 14 : 7; \
tok = dav1d_msac_decode_hi_tok(&ts->msac, hi_cdf[ctx]); \
level_tok = tok + (3 << 6); \
if (dbg) \
printf("Post-hi_tok[%d][%d][%d][%d=%d=%d]: r=%d\n", \
imin(t_dim->ctx, 3), chroma, ctx, eob, rc, tok, \
ts->msac.rng); \
} \
cf[rc] = tok; \
if (tx_class == TX_CLASS_H) \
/* Transposing reduces the stride and padding requirements */ \
levels[y * stride + x] = (uint8_t) level_tok; \
else \
levels[x * stride + y] = (uint8_t) level_tok; \
for (int i = eob - 1; i > 0; i--) { /* ac */ \
if (tx_class == TX_CLASS_H) \
rc = i, x = rc & mask, y = rc >> shift; \
else \
rc = scan[i], x = rc >> shift, y = rc & mask; \
assert(x < 32 && y < 32); \
uint8_t *const level = levels + x * stride + y; \
ctx = get_lo_ctx(level, tx_class, &mag, lo_ctx_offsets, x, y, stride); \
if (tx_class == TX_CLASS_2D) \
y |= x; \
tok = dav1d_msac_decode_symbol_adapt4(&ts->msac, lo_cdf[ctx], 3); \
level_tok = tok * 0x41; \
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 == 3) { \
mag &= 63; \
ctx = (y > (tx_class == TX_CLASS_2D) ? 14 : 7) + \
(mag > 12 ? 6 : (mag + 1) >> 1); \
tok = dav1d_msac_decode_hi_tok(&ts->msac, hi_cdf[ctx]); \
level_tok = tok + (3 << 6); \
if (dbg) \
printf("Post-hi_tok[%d][%d][%d][%d=%d=%d]: r=%d\n", \
imin(t_dim->ctx, 3), chroma, ctx, i, rc, tok, \
ts->msac.rng); \
} \
cf[rc] = tok; \
*level = (uint8_t) level_tok; \
} \
/* dc */ \
ctx = (tx_class == TX_CLASS_2D) ? 0 : \
get_lo_ctx(levels, tx_class, &mag, lo_ctx_offsets, 0, 0, stride); \
dc_tok = dav1d_msac_decode_symbol_adapt4(&ts->msac, lo_cdf[ctx], 3); \
if (dbg) \
printf("Post-dc_lo_tok[%d][%d][%d][%d]: r=%d\n", \
t_dim->ctx, chroma, ctx, dc_tok, ts->msac.rng); \
if (dc_tok == 3) { \
if (tx_class == TX_CLASS_2D) \
mag = levels[0 * stride + 1] + levels[1 * stride + 0] + \
levels[1 * stride + 1]; \
mag &= 63; \
ctx = mag > 12 ? 6 : (mag + 1) >> 1; \
dc_tok = dav1d_msac_decode_hi_tok(&ts->msac, hi_cdf[ctx]); \
if (dbg) \
printf("Post-dc_hi_tok[%d][%d][0][%d]: r=%d\n", \
imin(t_dim->ctx, 3), chroma, dc_tok, ts->msac.rng); \
} \
break
switch (tx_class) {
case TX_CLASS_2D: {
const unsigned nonsquare_tx = tx >= RTX_4X8;
const uint8_t (*const lo_ctx_offsets)[5] =
dav1d_lo_ctx_offsets[nonsquare_tx + (tx & nonsquare_tx)];
const ptrdiff_t stride = 4 * sh;
memset(levels, 0, stride * (4 * sw + 2));
DECODE_COEFS_CLASS(TX_CLASS_2D);
}
case TX_CLASS_H: {
#define lo_ctx_offsets NULL
const ptrdiff_t stride = 16;
memset(levels, 0, stride * (4 * sh + 2));
DECODE_COEFS_CLASS(TX_CLASS_H);
}
case TX_CLASS_V: {
const ptrdiff_t stride = 16;
memset(levels, 0, stride * (4 * sw + 2));
DECODE_COEFS_CLASS(TX_CLASS_V);
}
#undef lo_ctx_offsets
#undef DECODE_COEFS_CLASS
default: assert(0);
}
} else { // dc-only
int tok_br = dav1d_msac_decode_symbol_adapt4(&ts->msac, eob_cdf[0], 2);
dc_tok = 1 + tok_br;
if (dbg)
printf("Post-dc_lo_tok[%d][%d][%d][%d]: r=%d\n",
t_dim->ctx, chroma, 0, dc_tok, ts->msac.rng);
if (tok_br == 2) {
dc_tok = dav1d_msac_decode_hi_tok(&ts->msac, hi_cdf[0]);
if (dbg)
printf("Post-dc_hi_tok[%d][%d][0][%d]: r=%d\n",
imin(t_dim->ctx, 3), chroma, dc_tok, ts->msac.rng);
}
}
// residual and sign
int dc_sign = 1 << 6;
const uint16_t *const dq_tbl = ts->dq[b->seg_id][plane];
const uint8_t *const qm_tbl = f->qm[lossless || is_1d || *txtp == IDTX][tx][plane];
const int dq_shift = imax(0, t_dim->ctx - 2);
const int bitdepth = BITDEPTH == 8 ? 8 : f->cur.p.bpc;
const int cf_max = (1 << (7 + bitdepth)) - 1;
unsigned cul_level = 0;
if (dc_tok) { // dc
const int dc_sign_ctx = get_dc_sign_ctx(tx, a, l);
uint16_t *const dc_sign_cdf =
ts->cdf.coef.dc_sign[chroma][dc_sign_ctx];
const int sign = dav1d_msac_decode_bool_adapt(&ts->msac, dc_sign_cdf);
const unsigned dq = (dq_tbl[0] * qm_tbl[0] + 16) >> 5;
if (dbg)
printf("Post-dc_sign[%d][%d][%d]: r=%d\n",
chroma, dc_sign_ctx, sign, ts->msac.rng);
dc_sign = (sign - 1) & (2 << 6);
if (dc_tok == 15) {
dc_tok += read_golomb(&ts->msac);
if (dbg)
printf("Post-dc_residual[%d->%d]: r=%d\n",
dc_tok - 15, dc_tok, ts->msac.rng);
dc_tok &= 0xfffff;
}
cul_level += dc_tok;
dc_tok = ((dq * dc_tok) & 0xffffff) >> dq_shift;
cf[0] = imin(dc_tok - sign, cf_max) ^ -sign;
}
for (int i = 1; i <= eob; i++) { // ac
const int rc = scan[i];
int tok = cf[rc];
if (!tok) continue;
// sign
const int sign = dav1d_msac_decode_bool_equi(&ts->msac);
const unsigned dq = (dq_tbl[1] * qm_tbl[rc] + 16) >> 5;
if (dbg)
printf("Post-sign[%d=%d=%d]: r=%d\n", i, rc, sign, ts->msac.rng);
// 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);
// coefficient parsing, see 5.11.39
tok &= 0xfffff;
}
// dequant, see 7.12.3
cul_level += tok;
tok = ((dq * tok) & 0xffffff) >> dq_shift;
cf[rc] = imin(tok - sign, cf_max) ^ -sign;
}
// context
*res_ctx = umin(cul_level, 63) | dc_sign;
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 = &dav1d_txfm_dimensions[ytx];
const int txw = t_dim->w, txh = t_dim->h;
/* y_off can be larger than 3 since lossless blocks use TX_4X4 but can't
* be splitted. Aviods an undefined left shift. */
if (depth < 2 && tx_split[depth] &&
tx_split[depth] & (1 << (y_off * 4 + x_off)))
{
const enum RectTxfmSize sub = t_dim->sub;
const TxfmInfo *const sub_t_dim = &dav1d_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.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) {
assert(ts->frame_thread.cf);
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 = bitfn(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);
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir lcoef, off, mul * cf_ctx)
#define default_memset(dir, diridx, off, sz) \
memset(&t->dir lcoef[off], cf_ctx, sz)
case_set_upto16_with_default(imin(txh, f->bh - t->by), l., 1, by4);
case_set_upto16_with_default(imin(txw, f->bw - t->bx), a->, 0, bx4);
#undef default_memset
#undef set_ctx
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
for (int y = 0; y < txh; y++) { \
rep_macro(type, txtp_map, 0, mul * txtp); \
txtp_map += 32; \
}
uint8_t *txtp_map = &t->txtp_map[by4 * 32 + bx4];
case_set_upto16(txw,,,);
#undef set_ctx
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.stride[0], cf, eob
HIGHBD_CALL_SUFFIX);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
hex_dump(dst, f->cur.stride[0], t_dim->w * 4, t_dim->h * 4, "recon");
}
}
}
}
void bytefn(dav1d_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.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = f->cur.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 = dav1d_block_dimensions[bs];
const int bw4 = b_dim[0], bh4 = b_dim[1];
const int cbw4 = (bw4 + ss_hor) >> ss_hor, cbh4 = (bh4 + ss_ver) >> ss_ver;
const int has_chroma = f->cur.p.layout != DAV1D_PIXEL_LAYOUT_I400 &&
(bw4 > ss_hor || t->bx & 1) &&
(bh4 > ss_ver || t->by & 1);
if (b->skip) {
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir lcoef, off, mul * 0x40)
case_set(bh4, l., 1, by4);
case_set(bw4, a->, 0, bx4);
#undef set_ctx
if (has_chroma) {
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir ccoef[0], off, mul * 0x40); \
rep_macro(type, t->dir ccoef[1], off, mul * 0x40)
case_set(cbh4, l., 1, cby4);
case_set(cbw4, a->, 0, cbx4);
#undef set_ctx
}
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 = &dav1d_txfm_dimensions[b->uvtx];
const TxfmInfo *const t_dim = &dav1d_txfm_dimensions[b->intra ? b->tx : b->max_ytx];
const uint16_t tx_split[2] = { b->tx_split0, b->tx_split1 };
for (int init_y = 0; init_y < h4; init_y += 16) {
const int sub_h4 = imin(h4, 16 + init_y);
for (int init_x = 0; init_x < w4; init_x += 16) {
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, 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;
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir lcoef, off, mul * cf_ctx)
#define default_memset(dir, diridx, off, sz) \
memset(&t->dir lcoef[off], cf_ctx, sz)
case_set_upto16_with_default(imin(t_dim->h, f->bh - t->by),
l., 1, by4 + y);
case_set_upto16_with_default(imin(t_dim->w, f->bw - t->bx),
a->, 0, bx4 + x);
#undef default_memset
#undef set_ctx
}
}
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;
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir ccoef[pl], off, mul * cf_ctx)
#define default_memset(dir, diridx, off, sz) \
memset(&t->dir ccoef[pl][off], cf_ctx, sz)
case_set_upto16_with_default( \
imin(uv_t_dim->h, (f->bh - t->by + ss_ver) >> ss_ver),
l., 1, cby4 + y);
case_set_upto16_with_default( \
imin(uv_t_dim->w, (f->bw - t->bx + ss_hor) >> ss_hor),
a->, 0, cbx4 + x);
#undef default_memset
#undef set_ctx
}
t->bx -= x << ss_hor;
}
t->by -= y << ss_ver;
}
}
}
}
static int mc(Dav1dTileContext *const t,
pixel *const dst8, int16_t *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 int refidx,
const enum Filter2d filter_2d)
{
assert((dst8 != NULL) ^ (dst16 != NULL));
const Dav1dFrameContext *const f = t->f;
const int ss_ver = !!pl && f->cur.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = !!pl && f->cur.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);
ptrdiff_t ref_stride = refp->p.stride[!!pl];
const pixel *ref;
if (refp->p.p.w == f->cur.p.w && refp->p.p.h == f->cur.p.h) {
const int dx = bx * h_mul + (mvx >> (3 + ss_hor));
const int dy = by * v_mul + (mvy >> (3 + ss_ver));
int w, h;
if (refp->p.data[0] != f->cur.data[0]) { // i.e. not for intrabc
if (dav1d_thread_picture_wait(refp, dy + bh4 * v_mul + !!my * 4,
PLANE_TYPE_Y + !!pl))
{
return -1;
}
w = (f->cur.p.w + ss_hor) >> ss_hor;
h = (f->cur.p.h + ss_ver) >> ss_ver;
} else {
w = f->bw * 4 >> ss_hor;
h = f->bh * 4 >> ss_ver;
}
if (dx < !!mx * 3 || dy < !!my * 3 ||
dx + bw4 * h_mul + !!mx * 4 > w ||
dy + bh4 * v_mul + !!my * 4 > h)
{
pixel *const emu_edge_buf = bitfn(t->scratch.emu_edge);
f->dsp->mc.emu_edge(bw4 * h_mul + !!mx * 7, bh4 * v_mul + !!my * 7,
w, h, dx - !!mx * 3, dy - !!my * 3,
emu_edge_buf, 192 * sizeof(pixel),
refp->p.data[pl], ref_stride);
ref = &emu_edge_buf[192 * !!my * 3 + !!mx * 3];
ref_stride = 192 * 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
HIGHBD_CALL_SUFFIX);
} else {
f->dsp->mc.mct[filter_2d](dst16, ref, ref_stride, bw4 * h_mul,
bh4 * v_mul, mx << !ss_hor, my << !ss_ver
HIGHBD_CALL_SUFFIX);
}
} else {
assert(refp != &f->sr_cur);
const int orig_pos_y = (by * v_mul << 4) + mvy * (1 << !ss_ver);
const int orig_pos_x = (bx * h_mul << 4) + mvx * (1 << !ss_hor);
#define scale_mv(res, val, scale) do { \
const int64_t tmp = (int64_t)(val) * scale + (scale - 0x4000) * 8; \
res = apply_sign64((int) ((llabs(tmp) + 128) >> 8), tmp) + 32; \
} while (0)
int pos_y, pos_x;
scale_mv(pos_x, orig_pos_x, f->svc[refidx][0].scale);
scale_mv(pos_y, orig_pos_y, f->svc[refidx][1].scale);
#undef scale_mv
const int left = pos_x >> 10;
const int top = pos_y >> 10;
const int right =
((pos_x + (bw4 * h_mul - 1) * f->svc[refidx][0].step) >> 10) + 1;
const int bottom =
((pos_y + (bh4 * v_mul - 1) * f->svc[refidx][1].step) >> 10) + 1;
if (dav1d_thread_picture_wait(refp, bottom + 4, PLANE_TYPE_Y + !!pl))
return -1;
if (DEBUG_BLOCK_INFO)
printf("Off %dx%d [%d,%d,%d], size %dx%d [%d,%d]\n",
left, top, orig_pos_x, f->svc[refidx][0].scale, refidx,
right-left, bottom-top,
f->svc[refidx][0].step, f->svc[refidx][1].step);
const int w = (refp->p.p.w + ss_hor) >> ss_hor;
const int h = (refp->p.p.h + ss_ver) >> ss_ver;
if (left < 3 || top < 3 || right + 4 > w || bottom + 4 > h) {
pixel *const emu_edge_buf = bitfn(t->scratch.emu_edge);
f->dsp->mc.emu_edge(right - left + 7, bottom - top + 7,
w, h, left - 3, top - 3,
emu_edge_buf, 320 * sizeof(pixel),
refp->p.data[pl], ref_stride);
ref = &emu_edge_buf[320 * 3 + 3];
ref_stride = 320 * sizeof(pixel);
if (DEBUG_BLOCK_INFO) printf("Emu\n");
} else {
ref = ((pixel *) refp->p.data[pl]) + PXSTRIDE(ref_stride) * top + left;
}
if (dst8 != NULL) {
f->dsp->mc.mc_scaled[filter_2d](dst8, dst_stride, ref, ref_stride,
bw4 * h_mul, bh4 * v_mul,
pos_x & 0x3ff, pos_y & 0x3ff,
f->svc[refidx][0].step,
f->svc[refidx][1].step
HIGHBD_CALL_SUFFIX);
} else {
f->dsp->mc.mct_scaled[filter_2d](dst16, ref, ref_stride,
bw4 * h_mul, bh4 * v_mul,
pos_x & 0x3ff, pos_y & 0x3ff,
f->svc[refidx][0].step,
f->svc[refidx][1].step
HIGHBD_CALL_SUFFIX);
}
}
return 0;
}
static int 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_block **r = &t->rt.r[(t->by & 31) + 5];
pixel *const lap = bitfn(t->scratch.lap);
const int ss_ver = !!pl && f->cur.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = !!pl && f->cur.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int h_mul = 4 >> ss_hor, v_mul = 4 >> ss_ver;
int res;
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_block *const a_r = &r[-1][t->bx + x + 1];
const uint8_t *const a_b_dim = dav1d_block_dimensions[a_r->bs];
if (a_r->ref.ref[0] > 0) {
const int ow4 = iclip(a_b_dim[0], 2, b_dim[0]);
const int oh4 = imin(b_dim[1], 16) >> 1;
res = mc(t, lap, NULL, ow4 * h_mul * sizeof(pixel), ow4, (oh4 * 3 + 3) >> 2,
t->bx + x, t->by, pl, a_r->mv.mv[0],
&f->refp[a_r->ref.ref[0] - 1], a_r->ref.ref[0] - 1,
dav1d_filter_2d[t->a->filter[1][bx4 + x + 1]][t->a->filter[0][bx4 + x + 1]]);
if (res) return res;
f->dsp->mc.blend_h(&dst[x * h_mul], dst_stride, lap,
h_mul * ow4, v_mul * oh4);
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_block *const l_r = &r[y + 1][t->bx - 1];
const uint8_t *const l_b_dim = dav1d_block_dimensions[l_r->bs];
if (l_r->ref.ref[0] > 0) {
const int ow4 = imin(b_dim[0], 16) >> 1;
const int oh4 = iclip(l_b_dim[1], 2, b_dim[1]);
res = mc(t, lap, NULL, h_mul * ow4 * sizeof(pixel), ow4, oh4,
t->bx, t->by + y, pl, l_r->mv.mv[0],
&f->refp[l_r->ref.ref[0] - 1], l_r->ref.ref[0] - 1,
dav1d_filter_2d[t->l.filter[1][by4 + y + 1]][t->l.filter[0][by4 + y + 1]]);
if (res) return res;
f->dsp->mc.blend_v(&dst[y * v_mul * PXSTRIDE(dst_stride)],
dst_stride, lap, h_mul * ow4, v_mul * oh4);
i++;
}
y += imax(l_b_dim[1], 2);
}
return 0;
}
static int warp_affine(Dav1dTileContext *const t,
pixel *dst8, int16_t *dst16, const ptrdiff_t dstride,
const uint8_t *const b_dim, const int pl,
const Dav1dThreadPicture *const refp,
const Dav1dWarpedMotionParams *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.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = !!pl && f->cur.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 = (refp->p.p.w + ss_hor) >> ss_hor;
const int height = (refp->p.p.h + ss_ver) >> ss_ver;
for (int y = 0; y < b_dim[1] * v_mul; y += 8) {
const int src_y = t->by * 4 + ((y + 4) << ss_ver);
const int64_t mat3_y = (int64_t) mat[3] * src_y + mat[0];
const int64_t mat5_y = (int64_t) mat[5] * src_y + mat[1];
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 int64_t mvx = ((int64_t) mat[2] * src_x + mat3_y) >> ss_hor;
const int64_t mvy = ((int64_t) mat[4] * src_x + mat5_y) >> ss_ver;
const int dx = (int) (mvx >> 16) - 4;
const int mx = (((int) mvx & 0xffff) - wmp->u.p.alpha * 4 -
wmp->u.p.beta * 7) & ~0x3f;
const int dy = (int) (mvy >> 16) - 4;
const int my = (((int) mvy & 0xffff) - wmp->u.p.gamma * 4 -
wmp->u.p.delta * 4) & ~0x3f;
const pixel *ref_ptr;
ptrdiff_t ref_stride = refp->p.stride[!!pl];
if (dav1d_thread_picture_wait(refp, dy + 4 + 8,
PLANE_TYPE_Y + !!pl))
{
return -1;
}
if (dx < 3 || dx + 8 + 4 > width || dy < 3 || dy + 8 + 4 > height) {
pixel *const emu_edge_buf = bitfn(t->scratch.emu_edge);
f->dsp->mc.emu_edge(15, 15, width, height, dx - 3, dy - 3,
emu_edge_buf, 32 * sizeof(pixel),
refp->p.data[pl], ref_stride);
ref_ptr = &emu_edge_buf[32 * 3 + 3];
ref_stride = 32 * 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->u.abcd, mx, my HIGHBD_CALL_SUFFIX);
else
dsp->mc.warp8x8(&dst8[x], dstride, ref_ptr, ref_stride,
wmp->u.abcd, mx, my HIGHBD_CALL_SUFFIX);
}
if (dst8) dst8 += 8 * PXSTRIDE(dstride);
else dst16 += 8 * dstride;
}
return 0;
}
void bytefn(dav1d_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.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = f->cur.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int cbx4 = bx4 >> ss_hor, cby4 = by4 >> ss_ver;
const uint8_t *const b_dim = dav1d_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->cur.p.layout != DAV1D_PIXEL_LAYOUT_I400 &&
(bw4 > ss_hor || t->bx & 1) &&
(bh4 > ss_ver || t->by & 1);
const TxfmInfo *const t_dim = &dav1d_txfm_dimensions[b->tx];
const TxfmInfo *const uv_t_dim = &dav1d_txfm_dimensions[b->uvtx];
// coefficient coding
pixel *const edge = bitfn(t->scratch.edge) + 128;
const int cbw4 = (bw4 + ss_hor) >> ss_hor, cbh4 = (bh4 + ss_ver) >> ss_ver;
const int intra_edge_filter_flag = f->seq_hdr->intra_edge_filter << 10;
for (int init_y = 0; init_y < h4; init_y += 16) {
const int sub_h4 = imin(h4, 16 + init_y);
const int sub_ch4 = imin(ch4, (init_y + 16) >> ss_ver);
for (int init_x = 0; init_x < w4; init_x += 16) {
if (b->pal_sz[0]) {
pixel *dst = ((pixel *) f->cur.data[0]) +
4 * (t->by * PXSTRIDE(f->cur.stride[0]) + t->bx);
const uint8_t *pal_idx;
if (f->frame_thread.pass) {
assert(ts->frame_thread.pal_idx);
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->scratch.pal[0];
f->dsp->ipred.pal_pred(dst, f->cur.stride[0], pal,
pal_idx, bw4 * 4, bh4 * 4);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
hex_dump(dst, PXSTRIDE(f->cur.stride[0]),
bw4 * 4, bh4 * 4, "y-pal-pred");
}
const int intra_flags = (sm_flag(t->a, bx4) |
sm_flag(&t->l, by4) |
intra_edge_filter_flag);
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_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.data[0]) +
4 * (t->by * PXSTRIDE(f->cur.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(dav1d_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.stride[0], top_sb_edge,
b->y_mode, &angle,
t_dim->w, t_dim->h,
f->seq_hdr->intra_edge_filter,
edge HIGHBD_CALL_SUFFIX);
dsp->ipred.intra_pred[m](dst, f->cur.stride[0], edge,
t_dim->w * 4, t_dim->h * 4,
angle | intra_flags,
4 * f->bw - 4 * t->bx,
4 * f->bh - 4 * t->by
HIGHBD_CALL_SUFFIX);
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.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 = bitfn(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);
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir lcoef, off, mul * cf_ctx)
#define default_memset(dir, diridx, off, sz) \
memset(&t->dir lcoef[off], cf_ctx, sz)
case_set_upto16_with_default(imin(t_dim->h, f->bh - t->by), \
l., 1, by4 + y);
case_set_upto16_with_default(imin(t_dim->w, f->bw - t->bx), \
a->, 0, bx4 + x);
#undef default_memset
#undef set_ctx
}
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.stride[0],
cf, eob HIGHBD_CALL_SUFFIX);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
hex_dump(dst, f->cur.stride[0],
t_dim->w * 4, t_dim->h * 4, "recon");
}
} else if (!f->frame_thread.pass) {
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir lcoef, off, mul * 0x40)
case_set_upto16(t_dim->h, l., 1, by4 + y);
case_set_upto16(t_dim->w, a->, 0, bx4 + x);
#undef set_ctx
}
dst += 4 * t_dim->w;
}
t->bx -= x;
}
t->by -= y;
if (!has_chroma) continue;
const ptrdiff_t stride = f->cur.stride[1];
if (b->uv_mode == CFL_PRED) {
assert(!init_x && !init_y);
int16_t *const ac = t->scratch.ac;
pixel *y_src = ((pixel *) f->cur.data[0]) + 4 * (t->bx & ~ss_hor) +
4 * (t->by & ~ss_ver) * PXSTRIDE(f->cur.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.data[1]) + uv_off,
((pixel *) f->cur.data[2]) + uv_off };
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.layout - 1](ac, y_src, f->cur.stride[0],
cbw4 - (furthest_r >> ss_hor),
cbh4 - (furthest_b >> ss_ver),
cbw4 * 4, cbh4 * 4);
for (int pl = 0; pl < 2; pl++) {
if (!b->cfl_alpha[pl]) continue;
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 int xpos = t->bx >> ss_hor, ypos = t->by >> ss_ver;
const int xstart = ts->tiling.col_start >> ss_hor;
const int ystart = ts->tiling.row_start >> ss_ver;
const enum IntraPredMode m =
bytefn(dav1d_prepare_intra_edges)(xpos, xpos > xstart,
ypos, ypos > ystart,
ts->tiling.col_end >> ss_hor,
ts->tiling.row_end >> ss_ver,
0, uv_dst[pl], stride,
top_sb_edge, DC_PRED, &angle,
uv_t_dim->w, uv_t_dim->h, 0,
edge HIGHBD_CALL_SUFFIX);
dsp->ipred.cfl_pred[m](uv_dst[pl], stride, edge,
uv_t_dim->w * 4,
uv_t_dim->h * 4,
ac, b->cfl_alpha[pl]
HIGHBD_CALL_SUFFIX);
}
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]) {
const ptrdiff_t uv_dstoff = 4 * ((t->bx >> ss_hor) +
(t->by >> ss_ver) * PXSTRIDE(f->cur.stride[1]));
const uint16_t (*pal)[8];
const uint8_t *pal_idx;
if (f->frame_thread.pass) {
assert(ts->frame_thread.pal_idx);
pal = f->frame_thread.pal[((t->by >> 1) + (t->bx & 1)) * (f->b4_stride >> 1) +
((t->bx >> 1) + (t->by & 1))];
pal_idx = ts->frame_thread.pal_idx;
ts->frame_thread.pal_idx += cbw4 * cbh4 * 16;
} else {
pal = t->scratch.pal;
pal_idx = &t->scratch.pal_idx[bw4 * bh4 * 16];
}
f->dsp->ipred.pal_pred(((pixel *) f->cur.data[1]) + uv_dstoff,
f->cur.stride[1], pal[1],
pal_idx, cbw4 * 4, cbh4 * 4);
f->dsp->ipred.pal_pred(((pixel *) f->cur.data[2]) + uv_dstoff,
f->cur.stride[1], pal[2],
pal_idx, cbw4 * 4, cbh4 * 4);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS) {
hex_dump(((pixel *) f->cur.data[1]) + uv_dstoff,
PXSTRIDE(f->cur.stride[1]),
cbw4 * 4, cbh4 * 4, "u-pal-pred");
hex_dump(((pixel *) f->cur.data[2]) + uv_dstoff,
PXSTRIDE(f->cur.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.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.layout - 1));
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.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->cfl_alpha[pl]) ||
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 uv_mode =
b->uv_mode == CFL_PRED ? DC_PRED : b->uv_mode;
const int xpos = t->bx >> ss_hor, ypos = t->by >> ss_ver;
const int xstart = ts->tiling.col_start >> ss_hor;
const int ystart = ts->tiling.row_start >> ss_ver;
const enum IntraPredMode m =
bytefn(dav1d_prepare_intra_edges)(xpos, xpos > xstart,
ypos, ypos > ystart,
ts->tiling.col_end >> ss_hor,
ts->tiling.row_end >> ss_ver,
edge_flags, dst, stride,
top_sb_edge, uv_mode,
&angle, uv_t_dim->w,
uv_t_dim->h,
f->seq_hdr->intra_edge_filter,
edge HIGHBD_CALL_SUFFIX);
angle |= intra_edge_filter_flag;
dsp->ipred.intra_pred[m](dst, stride, edge,
uv_t_dim->w * 4,
uv_t_dim->h * 4,
angle | sm_uv_fl,
(4 * f->bw + ss_hor -
4 * (t->bx & ~ss_hor)) >> ss_hor,
(4 * f->bh + ss_ver -
4 * (t->by & ~ss_ver)) >> ss_ver
HIGHBD_CALL_SUFFIX);
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 = bitfn(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);
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir ccoef[pl], off, mul * cf_ctx)
#define default_memset(dir, diridx, off, sz) \
memset(&t->dir ccoef[pl][off], cf_ctx, sz)
case_set_upto16_with_default( \
imin(uv_t_dim->h, (f->bh - t->by + ss_ver) >> ss_ver),
l., 1, cby4 + y);
case_set_upto16_with_default( \
imin(uv_t_dim->w, (f->bw - t->bx + ss_hor) >> ss_hor),
a->, 0, cbx4 + x);
#undef default_memset
#undef set_ctx
}
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 HIGHBD_CALL_SUFFIX);
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) {
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir ccoef[pl], off, mul * 0x40)
case_set_upto16(uv_t_dim->h, l., 1, cby4 + y);
case_set_upto16(uv_t_dim->w, a->, 0, cbx4 + x);
#undef set_ctx
}
dst += uv_t_dim->w * 4;
}
t->bx -= x << ss_hor;
}
t->by -= y << ss_ver;
}
}
}
}
int bytefn(dav1d_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.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = f->cur.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int cbx4 = bx4 >> ss_hor, cby4 = by4 >> ss_ver;
const uint8_t *const b_dim = dav1d_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->cur.p.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.layout == DAV1D_PIXEL_LAYOUT_I400 ? 0 :
DAV1D_PIXEL_LAYOUT_I444 - f->cur.p.layout;
int res;
// prediction
const int cbh4 = (bh4 + ss_ver) >> ss_ver, cbw4 = (bw4 + ss_hor) >> ss_hor;
pixel *dst = ((pixel *) f->cur.data[0]) +
4 * (t->by * PXSTRIDE(f->cur.stride[0]) + t->bx);
const ptrdiff_t uvdstoff =
4 * ((t->bx >> ss_hor) + (t->by >> ss_ver) * PXSTRIDE(f->cur.stride[1]));
if (!(f->frame_hdr->frame_type & 1)) {
// intrabc
assert(!f->frame_hdr->super_res.enabled);
res = mc(t, dst, NULL, f->cur.stride[0], bw4, bh4, t->bx, t->by, 0,
b->mv[0], &f->sr_cur, 0 /* unused */, FILTER_2D_BILINEAR);
if (res) return res;
if (has_chroma) for (int pl = 1; pl < 3; pl++) {
res = mc(t, ((pixel *)f->cur.data[pl]) + uvdstoff, NULL, f->cur.stride[1],
bw4 << (bw4 == ss_hor), bh4 << (bh4 == ss_ver),
t->bx & ~ss_hor, t->by & ~ss_ver, pl, b->mv[0],
&f->sr_cur, 0 /* unused */, FILTER_2D_BILINEAR);
if (res) return res;
}
} 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->gmv_warp_allowed[b->ref[0]]) ||
(b->motion_mode == MM_WARP && t->warpmv.type > DAV1D_WM_TYPE_TRANSLATION)))
{
res = warp_affine(t, dst, NULL, f->cur.stride[0], b_dim, 0, refp,
b->motion_mode == MM_WARP ? &t->warpmv :
&f->frame_hdr->gmv[b->ref[0]]);
if (res) return res;
} else {
res = mc(t, dst, NULL, f->cur.stride[0],
bw4, bh4, t->bx, t->by, 0, b->mv[0], refp, b->ref[0], filter_2d);
if (res) return res;
if (b->motion_mode == MM_OBMC) {
res = obmc(t, dst, f->cur.stride[0], b_dim, 0, bx4, by4, w4, h4);
if (res) return res;
}
}
if (b->interintra_type) {
pixel *const tl_edge = bitfn(t->scratch.edge) + 32;
enum IntraPredMode m = b->interintra_mode == II_SMOOTH_PRED ?
SMOOTH_PRED : b->interintra_mode;
pixel *const tmp = bitfn(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(dav1d_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.stride[0], top_sb_edge,
m, &angle, bw4, bh4, 0, tl_edge
HIGHBD_CALL_SUFFIX);
dsp->ipred.intra_pred[m](tmp, 4 * bw4 * sizeof(pixel),
tl_edge, bw4 * 4, bh4 * 4, 0, 0, 0
HIGHBD_CALL_SUFFIX);
const uint8_t *const ii_mask =
b->interintra_type == INTER_INTRA_BLEND ?
dav1d_ii_masks[bs][0][b->interintra_mode] :
dav1d_wedge_masks[bs][0][0][b->wedge_idx];
dsp->mc.blend(dst, f->cur.stride[0], tmp,
bw4 * 4, bh4 * 4, ii_mask);
}
if (!has_chroma) goto skip_inter_chroma_pred;
// sub8x8 derivation
int is_sub8x8 = bw4 == ss_hor || bh4 == ss_ver;
refmvs_block *const *r;
if (is_sub8x8) {
assert(ss_hor == 1);
r = &t->rt.r[(t->by & 31) + 5];
if (bw4 == 1) is_sub8x8 &= r[0][t->bx - 1].ref.ref[0] > 0;
if (bh4 == ss_ver) is_sub8x8 &= r[-1][t->bx].ref.ref[0] > 0;
if (bw4 == 1 && bh4 == ss_ver)
is_sub8x8 &= r[-1][t->bx - 1].ref.ref[0] > 0;
}
// chroma prediction
if (is_sub8x8) {
assert(ss_hor == 1);
ptrdiff_t h_off = 0, v_off = 0;
if (bw4 == 1 && bh4 == ss_ver) {
for (int pl = 0; pl < 2; pl++) {
res = mc(t, ((pixel *) f->cur.data[1 + pl]) + uvdstoff,
NULL, f->cur.stride[1],
bw4, bh4, t->bx - 1, t->by - 1, 1 + pl,
r[-1][t->bx - 1].mv.mv[0],
&f->refp[r[-1][t->bx - 1].ref.ref[0] - 1],
r[-1][t->bx - 1].ref.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);
if (res) return res;
}
v_off = 2 * PXSTRIDE(f->cur.stride[1]);
h_off = 2;
}
if (bw4 == 1) {
const enum Filter2d left_filter_2d =
dav1d_filter_2d[t->l.filter[1][by4]][t->l.filter[0][by4]];
for (int pl = 0; pl < 2; pl++) {
res = mc(t, ((pixel *) f->cur.data[1 + pl]) + uvdstoff + v_off, NULL,
f->cur.stride[1], bw4, bh4, t->bx - 1,
t->by, 1 + pl, r[0][t->bx - 1].mv.mv[0],
&f->refp[r[0][t->bx - 1].ref.ref[0] - 1],
r[0][t->bx - 1].ref.ref[0] - 1,
f->frame_thread.pass != 2 ? left_filter_2d :
f->frame_thread.b[(t->by * f->b4_stride) + t->bx - 1].filter2d);
if (res) return res;
}
h_off = 2;
}
if (bh4 == ss_ver) {
const enum Filter2d top_filter_2d =
dav1d_filter_2d[t->a->filter[1][bx4]][t->a->filter[0][bx4]];
for (int pl = 0; pl < 2; pl++) {
res = mc(t, ((pixel *) f->cur.data[1 + pl]) + uvdstoff + h_off, NULL,
f->cur.stride[1], bw4, bh4, t->bx, t->by - 1,
1 + pl, r[-1][t->bx].mv.mv[0],
&f->refp[r[-1][t->bx].ref.ref[0] - 1],
r[-1][t->bx].ref.ref[0] - 1,
f->frame_thread.pass != 2 ? top_filter_2d :
f->frame_thread.b[((t->by - 1) * f->b4_stride) + t->bx].filter2d);
if (res) return res;
}
v_off = 2 * PXSTRIDE(f->cur.stride[1]);
}
for (int pl = 0; pl < 2; pl++) {
res = mc(t, ((pixel *) f->cur.data[1 + pl]) + uvdstoff + h_off + v_off, NULL, f->cur.stride[1],
bw4, bh4, t->bx, t->by, 1 + pl, b->mv[0],
refp, b->ref[0], filter_2d);
if (res) return res;
}
} else {
if (imin(cbw4, cbh4) > 1 &&
((b->inter_mode == GLOBALMV && f->gmv_warp_allowed[b->ref[0]]) ||
(b->motion_mode == MM_WARP && t->warpmv.type > DAV1D_WM_TYPE_TRANSLATION)))
{
for (int pl = 0; pl < 2; pl++) {
res = warp_affine(t, ((pixel *) f->cur.data[1 + pl]) + uvdstoff, NULL,
f->cur.stride[1], b_dim, 1 + pl, refp,
b->motion_mode == MM_WARP ? &t->warpmv :
&f->frame_hdr->gmv[b->ref[0]]);
if (res) return res;
}
} else {
for (int pl = 0; pl < 2; pl++) {
res = mc(t, ((pixel *) f->cur.data[1 + pl]) + uvdstoff,
NULL, f->cur.stride[1],
bw4 << (bw4 == ss_hor), bh4 << (bh4 == ss_ver),
t->bx & ~ss_hor, t->by & ~ss_ver,
1 + pl, b->mv[0], refp, b->ref[0], filter_2d);
if (res) return res;
if (b->motion_mode == MM_OBMC) {
res = obmc(t, ((pixel *) f->cur.data[1 + pl]) + uvdstoff,
f->cur.stride[1], b_dim, 1 + pl, bx4, by4, w4, h4);
if (res) return res;
}
}
}
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 uint8_t *const ii_mask =
b->interintra_type == INTER_INTRA_BLEND ?
dav1d_ii_masks[bs][chr_layout_idx][b->interintra_mode] :
dav1d_wedge_masks[bs][chr_layout_idx][0][b->wedge_idx];
for (int pl = 0; pl < 2; pl++) {
pixel *const tmp = bitfn(t->scratch.interintra);
pixel *const tl_edge = bitfn(t->scratch.edge) + 32;
enum IntraPredMode m =
b->interintra_mode == II_SMOOTH_PRED ?
SMOOTH_PRED : b->interintra_mode;
int angle = 0;
pixel *const uvdst = ((pixel *) f->cur.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(dav1d_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.stride[1],
top_sb_edge, m,
&angle, cbw4, cbh4, 0, tl_edge
HIGHBD_CALL_SUFFIX);
dsp->ipred.intra_pred[m](tmp, cbw4 * 4 * sizeof(pixel),
tl_edge, cbw4 * 4, cbh4 * 4, 0, 0, 0
HIGHBD_CALL_SUFFIX);
dsp->mc.blend(uvdst, f->cur.stride[1], tmp,
cbw4 * 4, cbh4 * 4, ii_mask);
}
}
}
skip_inter_chroma_pred: {}
t->tl_4x4_filter = filter_2d;
} else {
const enum Filter2d filter_2d = b->filter2d;
// Maximum super block size is 128x128
int16_t (*tmp)[128 * 128] = 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->gmv_warp_allowed[b->ref[i]]) {
res = warp_affine(t, NULL, tmp[i], bw4 * 4, b_dim, 0, refp,
&f->frame_hdr->gmv[b->ref[i]]);
if (res) return res;
} else {
res = mc(t, NULL, tmp[i], 0, bw4, bh4, t->bx, t->by, 0,
b->mv[i], refp, b->ref[i], filter_2d);
if (res) return res;
}
}
switch (b->comp_type) {
case COMP_INTER_AVG:
dsp->mc.avg(dst, f->cur.stride[0], tmp[0], tmp[1],
bw4 * 4, bh4 * 4 HIGHBD_CALL_SUFFIX);
break;
case COMP_INTER_WEIGHTED_AVG:
jnt_weight = f->jnt_weights[b->ref[0]][b->ref[1]];
dsp->mc.w_avg(dst, f->cur.stride[0], tmp[0], tmp[1],
bw4 * 4, bh4 * 4, jnt_weight HIGHBD_CALL_SUFFIX);
break;
case COMP_INTER_SEG:
dsp->mc.w_mask[chr_layout_idx](dst, f->cur.stride[0],
tmp[b->mask_sign], tmp[!b->mask_sign],
bw4 * 4, bh4 * 4, seg_mask,
b->mask_sign HIGHBD_CALL_SUFFIX);
mask = seg_mask;
break;
case COMP_INTER_WEDGE:
mask = dav1d_wedge_masks[bs][0][0][b->wedge_idx];
dsp->mc.mask(dst, f->cur.stride[0],
tmp[b->mask_sign], tmp[!b->mask_sign],
bw4 * 4, bh4 * 4, mask HIGHBD_CALL_SUFFIX);
if (has_chroma)
mask = dav1d_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->gmv_warp_allowed[b->ref[i]])
{
res = warp_affine(t, NULL, tmp[i], bw4 * 4 >> ss_hor,
b_dim, 1 + pl,
refp, &f->frame_hdr->gmv[b->ref[i]]);
if (res) return res;
} else {
res = mc(t, NULL, tmp[i], 0, bw4, bh4, t->bx, t->by,
1 + pl, b->mv[i], refp, b->ref[i], filter_2d);
if (res) return res;
}
}
pixel *const uvdst = ((pixel *) f->cur.data[1 + pl]) + uvdstoff;
switch (b->comp_type) {
case COMP_INTER_AVG:
dsp->mc.avg(uvdst, f->cur.stride[1], tmp[0], tmp[1],
bw4 * 4 >> ss_hor, bh4 * 4 >> ss_ver
HIGHBD_CALL_SUFFIX);
break;
case COMP_INTER_WEIGHTED_AVG:
dsp->mc.w_avg(uvdst, f->cur.stride[1], tmp[0], tmp[1],
bw4 * 4 >> ss_hor, bh4 * 4 >> ss_ver, jnt_weight
HIGHBD_CALL_SUFFIX);
break;
case COMP_INTER_WEDGE:
case COMP_INTER_SEG:
dsp->mc.mask(uvdst, f->cur.stride[1],
tmp[b->mask_sign], tmp[!b->mask_sign],
bw4 * 4 >> ss_hor, bh4 * 4 >> ss_ver, mask
HIGHBD_CALL_SUFFIX);
break;
}
}
}
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS) {
hex_dump(dst, f->cur.stride[0], b_dim[0] * 4, b_dim[1] * 4, "y-pred");
if (has_chroma) {
hex_dump(&((pixel *) f->cur.data[1])[uvdstoff], f->cur.stride[1],
cbw4 * 4, cbh4 * 4, "u-pred");
hex_dump(&((pixel *) f->cur.data[2])[uvdstoff], f->cur.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
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir lcoef, off, mul * 0x40)
case_set(bh4, l., 1, by4);
case_set(bw4, a->, 0, bx4);
#undef set_ctx
if (has_chroma) {
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir ccoef[0], off, mul * 0x40); \
rep_macro(type, t->dir ccoef[1], off, mul * 0x40)
case_set(cbh4, l., 1, cby4);
case_set(cbw4, a->, 0, cbx4);
#undef set_ctx
}
return 0;
}
const TxfmInfo *const uvtx = &dav1d_txfm_dimensions[b->uvtx];
const TxfmInfo *const ytx = &dav1d_txfm_dimensions[b->max_ytx];
const uint16_t tx_split[2] = { b->tx_split0, b->tx_split1 };
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.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, tx_split,
x_off, y_off, &dst[x * 4]);
t->bx += ytx->w;
}
dst += PXSTRIDE(f->cur.stride[0]) * 4 * ytx->h;
t->bx -= x;
t->by += ytx->h;
}
dst -= PXSTRIDE(f->cur.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.data[1 + pl]) + uvdstoff +
(PXSTRIDE(f->cur.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 = bitfn(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);
#define set_ctx(type, dir, diridx, off, mul, rep_macro) \
rep_macro(type, t->dir ccoef[pl], off, mul * cf_ctx)
#define default_memset(dir, diridx, off, sz) \
memset(&t->dir ccoef[pl][off], cf_ctx, sz)
case_set_upto16_with_default( \
imin(uvtx->h, (f->bh - t->by + ss_ver) >> ss_ver),
l., 1, cby4 + y);
case_set_upto16_with_default( \
imin(uvtx->w, (f->bw - t->bx + ss_hor) >> ss_hor),
a->, 0, cbx4 + x);
#undef default_memset
#undef set_ctx
}
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.stride[1],
cf, eob HIGHBD_CALL_SUFFIX);
if (DEBUG_BLOCK_INFO && DEBUG_B_PIXELS)
hex_dump(&uvdst[4 * x], f->cur.stride[1],
uvtx->w * 4, uvtx->h * 4, "recon");
}
t->bx += uvtx->w << ss_hor;
}
uvdst += PXSTRIDE(f->cur.stride[1]) * 4 * uvtx->h;
t->bx -= x << ss_hor;
t->by += uvtx->h << ss_ver;
}
t->by -= y << ss_ver;
}
}
}
return 0;
}
void bytefn(dav1d_filter_sbrow)(Dav1dFrameContext *const f, const int sby) {
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->lf.restore_planes) {
// 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) {
const int ss_ver = f->cur.p.layout == DAV1D_PIXEL_LAYOUT_I420;
pixel *p_up[3] = {
f->lf.p[0] - 8 * PXSTRIDE(f->cur.stride[0]),
f->lf.p[1] - (8 * PXSTRIDE(f->cur.stride[1]) >> ss_ver),
f->lf.p[2] - (8 * PXSTRIDE(f->cur.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->frame_hdr->width[0] != f->frame_hdr->width[1]) {
const int has_chroma = f->cur.p.layout != DAV1D_PIXEL_LAYOUT_I400;
for (int pl = 0; pl < 1 + 2 * has_chroma; pl++) {
const int ss_ver = pl && f->cur.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int h_start = 8 * !!sby >> ss_ver;
const ptrdiff_t dst_stride = f->sr_cur.p.stride[!!pl];
pixel *dst = f->lf.sr_p[pl] - h_start * PXSTRIDE(dst_stride);
const ptrdiff_t src_stride = f->cur.stride[!!pl];
const pixel *src = f->lf.p[pl] - h_start * PXSTRIDE(src_stride);
const int h_end = 4 * (sbsz - 2 * (sby + 1 < sbh)) >> ss_ver;
const int ss_hor = pl && f->cur.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int dst_w = (f->sr_cur.p.p.w + ss_hor) >> ss_hor;
const int src_w = (4 * f->bw + ss_hor) >> ss_hor;
const int img_h = (f->cur.p.h - sbsz * 4 * sby + ss_ver) >> ss_ver;
f->dsp->mc.resize(dst, dst_stride, src, src_stride, dst_w,
imin(img_h, h_end) + h_start, src_w,
f->resize_step[!!pl], f->resize_start[!!pl]
HIGHBD_CALL_SUFFIX);
}
}
if (f->lf.restore_planes) {
bytefn(dav1d_lr_sbrow)(f, f->lf.sr_p, sby);
}
const int ss_ver = f->cur.p.layout == DAV1D_PIXEL_LAYOUT_I420;
f->lf.p[0] += sbsz * 4 * PXSTRIDE(f->cur.stride[0]);
f->lf.p[1] += sbsz * 4 * PXSTRIDE(f->cur.stride[1]) >> ss_ver;
f->lf.p[2] += sbsz * 4 * PXSTRIDE(f->cur.stride[1]) >> ss_ver;
f->lf.sr_p[0] += sbsz * 4 * PXSTRIDE(f->sr_cur.p.stride[0]);
f->lf.sr_p[1] += sbsz * 4 * PXSTRIDE(f->sr_cur.p.stride[1]) >> ss_ver;
f->lf.sr_p[2] += sbsz * 4 * PXSTRIDE(f->sr_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(dav1d_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.data[0]) + x_off * 4 +
((t->by + f->sb_step) * 4 - 1) * PXSTRIDE(f->cur.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.layout != DAV1D_PIXEL_LAYOUT_I400) {
const int ss_ver = f->cur.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = f->cur.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.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.data[pl])[uv_off],
4 * (ts->tiling.col_end - x_off) >> ss_hor);
}
}