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#define BITDEPTH 8
/*
* 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 "common/intops.h"
#include "src/lf_apply.h"
#include "src/lr_apply.h"
// The loop filter buffer stores 12 rows of pixels. A superblock block will
// contain at most 2 stripes. Each stripe requires 4 rows pixels (2 above
// and 2 below) the final 4 rows are used to swap the bottom of the last
// stripe with the top of the next super block row.
static void backup_lpf(const Dav1dFrameContext *const f,
pixel *dst, const ptrdiff_t dst_stride,
const pixel *src, const ptrdiff_t src_stride,
const int ss_ver, const int sb128,
int row, const int row_h, const int src_w,
const int h, const int ss_hor, const int lr_backup)
{
const int cdef_backup = !lr_backup;
const int dst_w = f->frame_hdr->super_res.enabled ?
(f->frame_hdr->width[1] + ss_hor) >> ss_hor : src_w;
// The first stripe of the frame is shorter by 8 luma pixel rows.
int stripe_h = ((64 << (cdef_backup & sb128)) - 8 * !row) >> ss_ver;
src += (stripe_h - 2) * PXSTRIDE(src_stride);
if (f->c->n_tc == 1) {
if (row) {
const int top = 4 << sb128;
// Copy the top part of the stored loop filtered pixels from the
// previous sb row needed above the first stripe of this sb row.
pixel_copy(&dst[PXSTRIDE(dst_stride) * 0],
&dst[PXSTRIDE(dst_stride) * top], dst_w);
pixel_copy(&dst[PXSTRIDE(dst_stride) * 1],
&dst[PXSTRIDE(dst_stride) * (top + 1)], dst_w);
pixel_copy(&dst[PXSTRIDE(dst_stride) * 2],
&dst[PXSTRIDE(dst_stride) * (top + 2)], dst_w);
pixel_copy(&dst[PXSTRIDE(dst_stride) * 3],
&dst[PXSTRIDE(dst_stride) * (top + 3)], dst_w);
}
dst += 4 * PXSTRIDE(dst_stride);
}
if (lr_backup && (f->frame_hdr->width[0] != f->frame_hdr->width[1])) {
while (row + stripe_h <= row_h) {
const int n_lines = 4 - (row + stripe_h + 1 == h);
f->dsp->mc.resize(dst, dst_stride, src, src_stride,
dst_w, n_lines, src_w, f->resize_step[ss_hor],
f->resize_start[ss_hor] HIGHBD_CALL_SUFFIX);
row += stripe_h; // unmodified stripe_h for the 1st stripe
stripe_h = 64 >> ss_ver;
src += stripe_h * PXSTRIDE(src_stride);
dst += n_lines * PXSTRIDE(dst_stride);
if (n_lines == 3) {
pixel_copy(dst, &dst[-PXSTRIDE(dst_stride)], dst_w);
dst += PXSTRIDE(dst_stride);
}
}
} else {
while (row + stripe_h <= row_h) {
const int n_lines = 4 - (row + stripe_h + 1 == h);
for (int i = 0; i < 4; i++) {
pixel_copy(dst, i == n_lines ? &dst[-PXSTRIDE(dst_stride)] :
src, src_w);
dst += PXSTRIDE(dst_stride);
src += PXSTRIDE(src_stride);
}
row += stripe_h; // unmodified stripe_h for the 1st stripe
stripe_h = 64 >> ss_ver;
src += (stripe_h - 4) * PXSTRIDE(src_stride);
}
}
}
void bytefn(dav1d_copy_lpf)(Dav1dFrameContext *const f,
/*const*/ pixel *const src[3], const int sby)
{
const int have_tt = f->c->n_tc > 1;
const int resize = f->frame_hdr->width[0] != f->frame_hdr->width[1];
const int offset = 8 * !!sby;
const ptrdiff_t *const src_stride = f->cur.stride;
const ptrdiff_t *const lr_stride = f->sr_cur.p.stride;
const int tt_off = have_tt * sby * (4 << f->seq_hdr->sb128);
pixel *const dst[3] = {
f->lf.lr_lpf_line[0] + tt_off * PXSTRIDE(lr_stride[0]),
f->lf.lr_lpf_line[1] + tt_off * PXSTRIDE(lr_stride[1]),
f->lf.lr_lpf_line[2] + tt_off * PXSTRIDE(lr_stride[1])
};
// TODO Also check block level restore type to reduce copying.
const int restore_planes = f->lf.restore_planes;
if (f->seq_hdr->cdef || restore_planes & LR_RESTORE_Y) {
const int h = f->cur.p.h;
const int w = f->bw << 2;
const int row_h = imin((sby + 1) << (6 + f->seq_hdr->sb128), h - 1);
const int y_stripe = (sby << (6 + f->seq_hdr->sb128)) - offset;
if (restore_planes & LR_RESTORE_Y || !resize)
backup_lpf(f, dst[0], lr_stride[0],
src[0] - offset * PXSTRIDE(src_stride[0]), src_stride[0],
0, f->seq_hdr->sb128, y_stripe, row_h, w, h, 0, 1);
if (have_tt && resize) {
const ptrdiff_t cdef_off_y = sby * 4 * PXSTRIDE(src_stride[0]);
backup_lpf(f, f->lf.cdef_lpf_line[0] + cdef_off_y, src_stride[0],
src[0] - offset * PXSTRIDE(src_stride[0]), src_stride[0],
0, f->seq_hdr->sb128, y_stripe, row_h, w, h, 0, 0);
}
}
if ((f->seq_hdr->cdef || restore_planes & (LR_RESTORE_U | LR_RESTORE_V)) &&
f->cur.p.layout != DAV1D_PIXEL_LAYOUT_I400)
{
const int ss_ver = f->sr_cur.p.p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = f->sr_cur.p.p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int h = (f->cur.p.h + ss_ver) >> ss_ver;
const int w = f->bw << (2 - ss_hor);
const int row_h = imin((sby + 1) << ((6 - ss_ver) + f->seq_hdr->sb128), h - 1);
const int offset_uv = offset >> ss_ver;
const int y_stripe = (sby << ((6 - ss_ver) + f->seq_hdr->sb128)) - offset_uv;
const ptrdiff_t cdef_off_uv = sby * 4 * PXSTRIDE(src_stride[1]);
if (f->seq_hdr->cdef || restore_planes & LR_RESTORE_U) {
if (restore_planes & LR_RESTORE_U || !resize)
backup_lpf(f, dst[1], lr_stride[1],
src[1] - offset_uv * PXSTRIDE(src_stride[1]),
src_stride[1], ss_ver, f->seq_hdr->sb128, y_stripe,
row_h, w, h, ss_hor, 1);
if (have_tt && resize)
backup_lpf(f, f->lf.cdef_lpf_line[1] + cdef_off_uv, src_stride[1],
src[1] - offset_uv * PXSTRIDE(src_stride[1]),
src_stride[1], ss_ver, f->seq_hdr->sb128, y_stripe,
row_h, w, h, ss_hor, 0);
}
if (f->seq_hdr->cdef || restore_planes & LR_RESTORE_V) {
if (restore_planes & LR_RESTORE_V || !resize)
backup_lpf(f, dst[2], lr_stride[1],
src[2] - offset_uv * PXSTRIDE(src_stride[1]),
src_stride[1], ss_ver, f->seq_hdr->sb128, y_stripe,
row_h, w, h, ss_hor, 1);
if (have_tt && resize)
backup_lpf(f, f->lf.cdef_lpf_line[2] + cdef_off_uv, src_stride[1],
src[2] - offset_uv * PXSTRIDE(src_stride[1]),
src_stride[1], ss_ver, f->seq_hdr->sb128, y_stripe,
row_h, w, h, ss_hor, 0);
}
}
}
static inline void filter_plane_cols_y(const Dav1dFrameContext *const f,
const int have_left,
const uint8_t (*lvl)[4],
const ptrdiff_t b4_stride,
const uint16_t (*const mask)[3][2],
pixel *dst, const ptrdiff_t ls,
const int w,
const int starty4, const int endy4)
{
const Dav1dDSPContext *const dsp = f->dsp;
// filter edges between columns (e.g. block1 | block2)
for (int x = 0; x < w; x++) {
if (!have_left && !x) continue;
uint32_t hmask[4];
if (!starty4) {
hmask[0] = mask[x][0][0];
hmask[1] = mask[x][1][0];
hmask[2] = mask[x][2][0];
if (endy4 > 16) {
hmask[0] |= (unsigned) mask[x][0][1] << 16;
hmask[1] |= (unsigned) mask[x][1][1] << 16;
hmask[2] |= (unsigned) mask[x][2][1] << 16;
}
} else {
hmask[0] = mask[x][0][1];
hmask[1] = mask[x][1][1];
hmask[2] = mask[x][2][1];
}
hmask[3] = 0;
dsp->lf.loop_filter_sb[0][0](&dst[x * 4], ls, hmask,
(const uint8_t(*)[4]) &lvl[x][0], b4_stride,
&f->lf.lim_lut, endy4 - starty4 HIGHBD_CALL_SUFFIX);
}
}
static inline void filter_plane_rows_y(const Dav1dFrameContext *const f,
const int have_top,
const uint8_t (*lvl)[4],
const ptrdiff_t b4_stride,
const uint16_t (*const mask)[3][2],
pixel *dst, const ptrdiff_t ls,
const int w,
const int starty4, const int endy4)
{
const Dav1dDSPContext *const dsp = f->dsp;
// block1
// filter edges between rows (e.g. ------)
// block2
for (int y = starty4; y < endy4;
y++, dst += 4 * PXSTRIDE(ls), lvl += b4_stride)
{
if (!have_top && !y) continue;
const uint32_t vmask[4] = {
mask[y][0][0] | ((unsigned) mask[y][0][1] << 16),
mask[y][1][0] | ((unsigned) mask[y][1][1] << 16),
mask[y][2][0] | ((unsigned) mask[y][2][1] << 16),
0,
};
dsp->lf.loop_filter_sb[0][1](dst, ls, vmask,
(const uint8_t(*)[4]) &lvl[0][1], b4_stride,
&f->lf.lim_lut, w HIGHBD_CALL_SUFFIX);
}
}
static inline void filter_plane_cols_uv(const Dav1dFrameContext *const f,
const int have_left,
const uint8_t (*lvl)[4],
const ptrdiff_t b4_stride,
const uint16_t (*const mask)[2][2],
pixel *const u, pixel *const v,
const ptrdiff_t ls, const int w,
const int starty4, const int endy4,
const int ss_ver)
{
const Dav1dDSPContext *const dsp = f->dsp;
// filter edges between columns (e.g. block1 | block2)
for (int x = 0; x < w; x++) {
if (!have_left && !x) continue;
uint32_t hmask[3];
if (!starty4) {
hmask[0] = mask[x][0][0];
hmask[1] = mask[x][1][0];
if (endy4 > (16 >> ss_ver)) {
hmask[0] |= (unsigned) mask[x][0][1] << (16 >> ss_ver);
hmask[1] |= (unsigned) mask[x][1][1] << (16 >> ss_ver);
}
} else {
hmask[0] = mask[x][0][1];
hmask[1] = mask[x][1][1];
}
hmask[2] = 0;
dsp->lf.loop_filter_sb[1][0](&u[x * 4], ls, hmask,
(const uint8_t(*)[4]) &lvl[x][2], b4_stride,
&f->lf.lim_lut, endy4 - starty4 HIGHBD_CALL_SUFFIX);
dsp->lf.loop_filter_sb[1][0](&v[x * 4], ls, hmask,
(const uint8_t(*)[4]) &lvl[x][3], b4_stride,
&f->lf.lim_lut, endy4 - starty4 HIGHBD_CALL_SUFFIX);
}
}
static inline void filter_plane_rows_uv(const Dav1dFrameContext *const f,
const int have_top,
const uint8_t (*lvl)[4],
const ptrdiff_t b4_stride,
const uint16_t (*const mask)[2][2],
pixel *const u, pixel *const v,
const ptrdiff_t ls, const int w,
const int starty4, const int endy4,
const int ss_hor)
{
const Dav1dDSPContext *const dsp = f->dsp;
ptrdiff_t off_l = 0;
// block1
// filter edges between rows (e.g. ------)
// block2
for (int y = starty4; y < endy4;
y++, off_l += 4 * PXSTRIDE(ls), lvl += b4_stride)
{
if (!have_top && !y) continue;
const uint32_t vmask[3] = {
mask[y][0][0] | ((unsigned) mask[y][0][1] << (16 >> ss_hor)),
mask[y][1][0] | ((unsigned) mask[y][1][1] << (16 >> ss_hor)),
0,
};
dsp->lf.loop_filter_sb[1][1](&u[off_l], ls, vmask,
(const uint8_t(*)[4]) &lvl[0][2], b4_stride,
&f->lf.lim_lut, w HIGHBD_CALL_SUFFIX);
dsp->lf.loop_filter_sb[1][1](&v[off_l], ls, vmask,
(const uint8_t(*)[4]) &lvl[0][3], b4_stride,
&f->lf.lim_lut, w HIGHBD_CALL_SUFFIX);
}
}
void bytefn(dav1d_loopfilter_sbrow_cols)(const Dav1dFrameContext *const f,
pixel *const p[3], Av1Filter *const lflvl,
int sby, const int start_of_tile_row)
{
int x, have_left;
// Don't filter outside the frame
const int is_sb64 = !f->seq_hdr->sb128;
const int starty4 = (sby & is_sb64) << 4;
const int sbsz = 32 >> is_sb64;
const int sbl2 = 5 - is_sb64;
const int halign = (f->bh + 31) & ~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 vmask = 16 >> ss_ver, hmask = 16 >> ss_hor;
const unsigned vmax = 1U << vmask, hmax = 1U << hmask;
const unsigned endy4 = starty4 + imin(f->h4 - sby * sbsz, sbsz);
const unsigned uv_endy4 = (endy4 + ss_ver) >> ss_ver;
// fix lpf strength at tile col boundaries
const uint8_t *lpf_y = &f->lf.tx_lpf_right_edge[0][sby << sbl2];
const uint8_t *lpf_uv = &f->lf.tx_lpf_right_edge[1][sby << (sbl2 - ss_ver)];
for (int tile_col = 1;; tile_col++) {
x = f->frame_hdr->tiling.col_start_sb[tile_col];
if ((x << sbl2) >= f->bw) break;
const int bx4 = x & is_sb64 ? 16 : 0, cbx4 = bx4 >> ss_hor;
x >>= is_sb64;
uint16_t (*const y_hmask)[2] = lflvl[x].filter_y[0][bx4];
for (unsigned y = starty4, mask = 1 << y; y < endy4; y++, mask <<= 1) {
const int sidx = mask >= 0x10000U;
const unsigned smask = mask >> (sidx << 4);
const int idx = 2 * !!(y_hmask[2][sidx] & smask) +
!!(y_hmask[1][sidx] & smask);
y_hmask[2][sidx] &= ~smask;
y_hmask[1][sidx] &= ~smask;
y_hmask[0][sidx] &= ~smask;
y_hmask[imin(idx, lpf_y[y - starty4])][sidx] |= smask;
}
if (f->cur.p.layout != DAV1D_PIXEL_LAYOUT_I400) {
uint16_t (*const uv_hmask)[2] = lflvl[x].filter_uv[0][cbx4];
for (unsigned y = starty4 >> ss_ver, uv_mask = 1 << y; y < uv_endy4;
y++, uv_mask <<= 1)
{
const int sidx = uv_mask >= vmax;
const unsigned smask = uv_mask >> (sidx << (4 - ss_ver));
const int idx = !!(uv_hmask[1][sidx] & smask);
uv_hmask[1][sidx] &= ~smask;
uv_hmask[0][sidx] &= ~smask;
uv_hmask[imin(idx, lpf_uv[y - (starty4 >> ss_ver)])][sidx] |= smask;
}
}
lpf_y += halign;
lpf_uv += halign >> ss_ver;
}
// fix lpf strength at tile row boundaries
if (start_of_tile_row) {
const BlockContext *a;
for (x = 0, a = &f->a[f->sb128w * (start_of_tile_row - 1)];
x < f->sb128w; x++, a++)
{
uint16_t (*const y_vmask)[2] = lflvl[x].filter_y[1][starty4];
const unsigned w = imin(32, f->w4 - (x << 5));
for (unsigned mask = 1, i = 0; i < w; mask <<= 1, i++) {
const int sidx = mask >= 0x10000U;
const unsigned smask = mask >> (sidx << 4);
const int idx = 2 * !!(y_vmask[2][sidx] & smask) +
!!(y_vmask[1][sidx] & smask);
y_vmask[2][sidx] &= ~smask;
y_vmask[1][sidx] &= ~smask;
y_vmask[0][sidx] &= ~smask;
y_vmask[imin(idx, a->tx_lpf_y[i])][sidx] |= smask;
}
if (f->cur.p.layout != DAV1D_PIXEL_LAYOUT_I400) {
const unsigned cw = (w + ss_hor) >> ss_hor;
uint16_t (*const uv_vmask)[2] = lflvl[x].filter_uv[1][starty4 >> ss_ver];
for (unsigned uv_mask = 1, i = 0; i < cw; uv_mask <<= 1, i++) {
const int sidx = uv_mask >= hmax;
const unsigned smask = uv_mask >> (sidx << (4 - ss_hor));
const int idx = !!(uv_vmask[1][sidx] & smask);
uv_vmask[1][sidx] &= ~smask;
uv_vmask[0][sidx] &= ~smask;
uv_vmask[imin(idx, a->tx_lpf_uv[i])][sidx] |= smask;
}
}
}
}
pixel *ptr;
uint8_t (*level_ptr)[4] = f->lf.level + f->b4_stride * sby * sbsz;
for (ptr = p[0], have_left = 0, x = 0; x < f->sb128w;
x++, have_left = 1, ptr += 128, level_ptr += 32)
{
filter_plane_cols_y(f, have_left, level_ptr, f->b4_stride,
lflvl[x].filter_y[0], ptr, f->cur.stride[0],
imin(32, f->w4 - x * 32), starty4, endy4);
}
if (!f->frame_hdr->loopfilter.level_u && !f->frame_hdr->loopfilter.level_v)
return;
ptrdiff_t uv_off;
level_ptr = f->lf.level + f->b4_stride * (sby * sbsz >> ss_ver);
for (uv_off = 0, have_left = 0, x = 0; x < f->sb128w;
x++, have_left = 1, uv_off += 128 >> ss_hor, level_ptr += 32 >> ss_hor)
{
filter_plane_cols_uv(f, have_left, level_ptr, f->b4_stride,
lflvl[x].filter_uv[0],
&p[1][uv_off], &p[2][uv_off], f->cur.stride[1],
(imin(32, f->w4 - x * 32) + ss_hor) >> ss_hor,
starty4 >> ss_ver, uv_endy4, ss_ver);
}
}
void bytefn(dav1d_loopfilter_sbrow_rows)(const Dav1dFrameContext *const f,
pixel *const p[3], Av1Filter *const lflvl,
int sby)
{
int x;
// Don't filter outside the frame
const int have_top = sby > 0;
const int is_sb64 = !f->seq_hdr->sb128;
const int starty4 = (sby & is_sb64) << 4;
const int sbsz = 32 >> is_sb64;
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 unsigned endy4 = starty4 + imin(f->h4 - sby * sbsz, sbsz);
const unsigned uv_endy4 = (endy4 + ss_ver) >> ss_ver;
pixel *ptr;
uint8_t (*level_ptr)[4] = f->lf.level + f->b4_stride * sby * sbsz;
for (ptr = p[0], x = 0; x < f->sb128w; x++, ptr += 128, level_ptr += 32) {
filter_plane_rows_y(f, have_top, level_ptr, f->b4_stride,
lflvl[x].filter_y[1], ptr, f->cur.stride[0],
imin(32, f->w4 - x * 32), starty4, endy4);
}
if (!f->frame_hdr->loopfilter.level_u && !f->frame_hdr->loopfilter.level_v)
return;
ptrdiff_t uv_off;
level_ptr = f->lf.level + f->b4_stride * (sby * sbsz >> ss_ver);
for (uv_off = 0, x = 0; x < f->sb128w;
x++, uv_off += 128 >> ss_hor, level_ptr += 32 >> ss_hor)
{
filter_plane_rows_uv(f, have_top, level_ptr, f->b4_stride,
lflvl[x].filter_uv[1],
&p[1][uv_off], &p[2][uv_off], f->cur.stride[1],
(imin(32, f->w4 - x * 32) + ss_hor) >> ss_hor,
starty4 >> ss_ver, uv_endy4, ss_hor);
}
}