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/*
* 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/cdef_apply.h"
enum Backup2x8Flags {
BACKUP_2X8_Y = 1 << 0,
BACKUP_2X8_UV = 1 << 1,
};
static void backup2lines(pixel *const dst[3], /*const*/ pixel *const src[3],
const ptrdiff_t stride[2],
const enum Dav1dPixelLayout layout)
{
const ptrdiff_t y_stride = PXSTRIDE(stride[0]);
if (y_stride < 0)
pixel_copy(dst[0] + y_stride, src[0] + 7 * y_stride, -2 * y_stride);
else
pixel_copy(dst[0], src[0] + 6 * y_stride, 2 * y_stride);
if (layout != DAV1D_PIXEL_LAYOUT_I400) {
const ptrdiff_t uv_stride = PXSTRIDE(stride[1]);
if (uv_stride < 0) {
const int uv_off = layout == DAV1D_PIXEL_LAYOUT_I420 ? 3 : 7;
pixel_copy(dst[1] + uv_stride, src[1] + uv_off * uv_stride, -2 * uv_stride);
pixel_copy(dst[2] + uv_stride, src[2] + uv_off * uv_stride, -2 * uv_stride);
} else {
const int uv_off = layout == DAV1D_PIXEL_LAYOUT_I420 ? 2 : 6;
pixel_copy(dst[1], src[1] + uv_off * uv_stride, 2 * uv_stride);
pixel_copy(dst[2], src[2] + uv_off * uv_stride, 2 * uv_stride);
}
}
}
static void backup2x8(pixel dst[3][8][2],
/*const*/ pixel *const src[3],
const ptrdiff_t src_stride[2], int x_off,
const enum Dav1dPixelLayout layout,
const enum Backup2x8Flags flag)
{
ptrdiff_t y_off = 0;
if (flag & BACKUP_2X8_Y) {
for (int y = 0; y < 8; y++, y_off += PXSTRIDE(src_stride[0]))
pixel_copy(dst[0][y], &src[0][y_off + x_off - 2], 2);
}
if (layout == DAV1D_PIXEL_LAYOUT_I400 || !(flag & BACKUP_2X8_UV))
return;
const int ss_ver = layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = layout != DAV1D_PIXEL_LAYOUT_I444;
x_off >>= ss_hor;
y_off = 0;
for (int y = 0; y < (8 >> ss_ver); y++, y_off += PXSTRIDE(src_stride[1])) {
pixel_copy(dst[1][y], &src[1][y_off + x_off - 2], 2);
pixel_copy(dst[2][y], &src[2][y_off + x_off - 2], 2);
}
}
static int adjust_strength(const int strength, const unsigned var) {
if (!var) return 0;
const int i = var >> 6 ? imin(ulog2(var >> 6), 12) : 0;
return (strength * (4 + i) + 8) >> 4;
}
void bytefn(dav1d_cdef_brow)(Dav1dTaskContext *const tc,
pixel *const p[3],
const Av1Filter *const lflvl,
const int by_start, const int by_end,
const int sbrow_start, const int sby)
{
Dav1dFrameContext *const f = (Dav1dFrameContext *)tc->f;
const int bitdepth_min_8 = BITDEPTH == 8 ? 0 : f->cur.p.bpc - 8;
const Dav1dDSPContext *const dsp = f->dsp;
enum CdefEdgeFlags edges = CDEF_HAVE_BOTTOM | (by_start > 0 ? CDEF_HAVE_TOP : 0);
pixel *ptrs[3] = { p[0], p[1], p[2] };
const int sbsz = 16;
const int sb64w = f->sb128w << 1;
const int damping = f->frame_hdr->cdef.damping + bitdepth_min_8;
const enum Dav1dPixelLayout layout = f->cur.p.layout;
const int uv_idx = DAV1D_PIXEL_LAYOUT_I444 - layout;
const int ss_ver = layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = layout != DAV1D_PIXEL_LAYOUT_I444;
static const uint8_t uv_dirs[2][8] = { { 0, 1, 2, 3, 4, 5, 6, 7 },
{ 7, 0, 2, 4, 5, 6, 6, 6 } };
const uint8_t *uv_dir = uv_dirs[layout == DAV1D_PIXEL_LAYOUT_I422];
const int have_tt = f->c->n_tc > 1;
const int sb128 = f->seq_hdr->sb128;
const int resize = f->frame_hdr->width[0] != f->frame_hdr->width[1];
const ptrdiff_t y_stride = PXSTRIDE(f->cur.stride[0]);
const ptrdiff_t uv_stride = PXSTRIDE(f->cur.stride[1]);
for (int bit = 0, by = by_start; by < by_end; by += 2, edges |= CDEF_HAVE_TOP) {
const int tf = tc->top_pre_cdef_toggle;
const int by_idx = (by & 30) >> 1;
if (by + 2 >= f->bh) edges &= ~CDEF_HAVE_BOTTOM;
if ((!have_tt || sbrow_start || by + 2 < by_end) &&
edges & CDEF_HAVE_BOTTOM)
{
// backup pre-filter data for next iteration
pixel *const cdef_top_bak[3] = {
f->lf.cdef_line[!tf][0] + have_tt * sby * 4 * y_stride,
f->lf.cdef_line[!tf][1] + have_tt * sby * 8 * uv_stride,
f->lf.cdef_line[!tf][2] + have_tt * sby * 8 * uv_stride
};
backup2lines(cdef_top_bak, ptrs, f->cur.stride, layout);
}
ALIGN_STK_16(pixel, lr_bak, 2 /* idx */, [3 /* plane */][8 /* y */][2 /* x */]);
pixel *iptrs[3] = { ptrs[0], ptrs[1], ptrs[2] };
edges &= ~CDEF_HAVE_LEFT;
edges |= CDEF_HAVE_RIGHT;
enum Backup2x8Flags prev_flag = 0;
for (int sbx = 0, last_skip = 1; sbx < sb64w; sbx++, edges |= CDEF_HAVE_LEFT) {
const int sb128x = sbx >> 1;
const int sb64_idx = ((by & sbsz) >> 3) + (sbx & 1);
const int cdef_idx = lflvl[sb128x].cdef_idx[sb64_idx];
if (cdef_idx == -1 ||
(!f->frame_hdr->cdef.y_strength[cdef_idx] &&
!f->frame_hdr->cdef.uv_strength[cdef_idx]))
{
last_skip = 1;
goto next_sb;
}
// Create a complete 32-bit mask for the sb row ahead of time.
const uint16_t (*noskip_row)[2] = &lflvl[sb128x].noskip_mask[by_idx];
const unsigned noskip_mask = (unsigned) noskip_row[0][1] << 16 |
noskip_row[0][0];
const int y_lvl = f->frame_hdr->cdef.y_strength[cdef_idx];
const int uv_lvl = f->frame_hdr->cdef.uv_strength[cdef_idx];
const enum Backup2x8Flags flag = !!y_lvl + (!!uv_lvl << 1);
const int y_pri_lvl = (y_lvl >> 2) << bitdepth_min_8;
int y_sec_lvl = y_lvl & 3;
y_sec_lvl += y_sec_lvl == 3;
y_sec_lvl <<= bitdepth_min_8;
const int uv_pri_lvl = (uv_lvl >> 2) << bitdepth_min_8;
int uv_sec_lvl = uv_lvl & 3;
uv_sec_lvl += uv_sec_lvl == 3;
uv_sec_lvl <<= bitdepth_min_8;
pixel *bptrs[3] = { iptrs[0], iptrs[1], iptrs[2] };
for (int bx = sbx * sbsz; bx < imin((sbx + 1) * sbsz, f->bw);
bx += 2, edges |= CDEF_HAVE_LEFT)
{
if (bx + 2 >= f->bw) edges &= ~CDEF_HAVE_RIGHT;
// check if this 8x8 block had any coded coefficients; if not,
// go to the next block
const uint32_t bx_mask = 3U << (bx & 30);
if (!(noskip_mask & bx_mask)) {
last_skip = 1;
goto next_b;
}
const int do_left = last_skip ? flag : (prev_flag ^ flag) & flag;
prev_flag = flag;
if (do_left && edges & CDEF_HAVE_LEFT) {
// we didn't backup the prefilter data because it wasn't
// there, so do it here instead
backup2x8(lr_bak[bit], bptrs, f->cur.stride, 0, layout, do_left);
}
if (edges & CDEF_HAVE_RIGHT) {
// backup pre-filter data for next iteration
backup2x8(lr_bak[!bit], bptrs, f->cur.stride, 8, layout, flag);
}
int dir;
unsigned variance;
if (y_pri_lvl || uv_pri_lvl)
dir = dsp->cdef.dir(bptrs[0], f->cur.stride[0],
&variance HIGHBD_CALL_SUFFIX);
const pixel *top, *bot;
ptrdiff_t offset;
if (!have_tt) goto st_y;
if (sbrow_start && by == by_start) {
if (resize) {
offset = (sby - 1) * 4 * y_stride + bx * 4;
top = &f->lf.cdef_lpf_line[0][offset];
} else {
offset = (sby * (4 << sb128) - 4) * y_stride + bx * 4;
top = &f->lf.lr_lpf_line[0][offset];
}
bot = bptrs[0] + 8 * y_stride;
} else if (!sbrow_start && by + 2 >= by_end) {
top = &f->lf.cdef_line[tf][0][sby * 4 * y_stride + bx * 4];
if (resize) {
offset = (sby * 4 + 2) * y_stride + bx * 4;
bot = &f->lf.cdef_lpf_line[0][offset];
} else {
const int line = sby * (4 << sb128) + 4 * sb128 + 2;
offset = line * y_stride + bx * 4;
bot = &f->lf.lr_lpf_line[0][offset];
}
} else {
st_y:;
offset = sby * 4 * y_stride;
top = &f->lf.cdef_line[tf][0][have_tt * offset + bx * 4];
bot = bptrs[0] + 8 * y_stride;
}
if (y_pri_lvl) {
const int adj_y_pri_lvl = adjust_strength(y_pri_lvl, variance);
if (adj_y_pri_lvl || y_sec_lvl)
dsp->cdef.fb[0](bptrs[0], f->cur.stride[0], lr_bak[bit][0],
top, bot, adj_y_pri_lvl, y_sec_lvl,
dir, damping, edges HIGHBD_CALL_SUFFIX);
} else if (y_sec_lvl)
dsp->cdef.fb[0](bptrs[0], f->cur.stride[0], lr_bak[bit][0],
top, bot, 0, y_sec_lvl, 0, damping,
edges HIGHBD_CALL_SUFFIX);
if (!uv_lvl) goto skip_uv;
assert(layout != DAV1D_PIXEL_LAYOUT_I400);
const int uvdir = uv_pri_lvl ? uv_dir[dir] : 0;
for (int pl = 1; pl <= 2; pl++) {
if (!have_tt) goto st_uv;
if (sbrow_start && by == by_start) {
if (resize) {
offset = (sby - 1) * 4 * uv_stride + (bx * 4 >> ss_hor);
top = &f->lf.cdef_lpf_line[pl][offset];
} else {
const int line = sby * (4 << sb128) - 4;
offset = line * uv_stride + (bx * 4 >> ss_hor);
top = &f->lf.lr_lpf_line[pl][offset];
}
bot = bptrs[pl] + (8 >> ss_ver) * uv_stride;
} else if (!sbrow_start && by + 2 >= by_end) {
const ptrdiff_t top_offset = sby * 8 * uv_stride +
(bx * 4 >> ss_hor);
top = &f->lf.cdef_line[tf][pl][top_offset];
if (resize) {
offset = (sby * 4 + 2) * uv_stride + (bx * 4 >> ss_hor);
bot = &f->lf.cdef_lpf_line[pl][offset];
} else {
const int line = sby * (4 << sb128) + 4 * sb128 + 2;
offset = line * uv_stride + (bx * 4 >> ss_hor);
bot = &f->lf.lr_lpf_line[pl][offset];
}
} else {
st_uv:;
const ptrdiff_t offset = sby * 8 * uv_stride;
top = &f->lf.cdef_line[tf][pl][have_tt * offset + (bx * 4 >> ss_hor)];
bot = bptrs[pl] + (8 >> ss_ver) * uv_stride;
}
dsp->cdef.fb[uv_idx](bptrs[pl], f->cur.stride[1],
lr_bak[bit][pl], top, bot,
uv_pri_lvl, uv_sec_lvl, uvdir,
damping - 1, edges HIGHBD_CALL_SUFFIX);
}
skip_uv:
bit ^= 1;
last_skip = 0;
next_b:
bptrs[0] += 8;
bptrs[1] += 8 >> ss_hor;
bptrs[2] += 8 >> ss_hor;
}
next_sb:
iptrs[0] += sbsz * 4;
iptrs[1] += sbsz * 4 >> ss_hor;
iptrs[2] += sbsz * 4 >> ss_hor;
}
ptrs[0] += 8 * PXSTRIDE(f->cur.stride[0]);
ptrs[1] += 8 * PXSTRIDE(f->cur.stride[1]) >> ss_ver;
ptrs[2] += 8 * PXSTRIDE(f->cur.stride[1]) >> ss_ver;
tc->top_pre_cdef_toggle ^= 1;
}
}