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/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <assert.h>
#include <math.h>
#include <string.h>
#include "config/aom_scale_rtcd.h"
#include "aom/aom_integer.h"
#include "av1/common/cdef.h"
#include "av1/common/cdef_block.h"
#include "av1/common/onyxc_int.h"
#include "av1/common/reconinter.h"
static int is_8x8_block_skip(MB_MODE_INFO **grid, int mi_row, int mi_col,
int mi_stride) {
MB_MODE_INFO **mbmi = grid + mi_row * mi_stride + mi_col;
for (int r = 0; r < mi_size_high[BLOCK_8X8]; ++r, mbmi += mi_stride) {
for (int c = 0; c < mi_size_wide[BLOCK_8X8]; ++c) {
if (!mbmi[c]->skip) return 0;
}
}
return 1;
}
int av1_cdef_compute_sb_list(const AV1_COMMON *const cm, int mi_row, int mi_col,
cdef_list *dlist, BLOCK_SIZE bs) {
MB_MODE_INFO **grid = cm->mi_grid_base;
int maxc = cm->mi_cols - mi_col;
int maxr = cm->mi_rows - mi_row;
if (bs == BLOCK_128X128 || bs == BLOCK_128X64)
maxc = AOMMIN(maxc, MI_SIZE_128X128);
else
maxc = AOMMIN(maxc, MI_SIZE_64X64);
if (bs == BLOCK_128X128 || bs == BLOCK_64X128)
maxr = AOMMIN(maxr, MI_SIZE_128X128);
else
maxr = AOMMIN(maxr, MI_SIZE_64X64);
const int r_step = 2; // mi_size_high[BLOCK_8X8]
const int c_step = 2; // mi_size_wide[BLOCK_8X8]
const int r_shift = 1;
const int c_shift = 1;
int count = 0;
for (int r = 0; r < maxr; r += r_step) {
for (int c = 0; c < maxc; c += c_step) {
if (!is_8x8_block_skip(grid, mi_row + r, mi_col + c, cm->mi_stride)) {
dlist[count].by = r >> r_shift;
dlist[count].bx = c >> c_shift;
count++;
}
}
}
return count;
}
void cdef_copy_rect8_8bit_to_16bit_c(uint16_t *dst, int dstride,
const uint8_t *src, int sstride, int v,
int h) {
for (int i = 0; i < v; i++) {
for (int j = 0; j < h; j++) {
dst[i * dstride + j] = src[i * sstride + j];
}
}
}
void cdef_copy_rect8_16bit_to_16bit_c(uint16_t *dst, int dstride,
const uint16_t *src, int sstride, int v,
int h) {
for (int i = 0; i < v; i++) {
for (int j = 0; j < h; j++) {
dst[i * dstride + j] = src[i * sstride + j];
}
}
}
static void copy_sb8_16(AV1_COMMON *cm, uint16_t *dst, int dstride,
const uint8_t *src, int src_voffset, int src_hoffset,
int sstride, int vsize, int hsize) {
if (cm->seq_params.use_highbitdepth) {
const uint16_t *base =
&CONVERT_TO_SHORTPTR(src)[src_voffset * sstride + src_hoffset];
cdef_copy_rect8_16bit_to_16bit(dst, dstride, base, sstride, vsize, hsize);
} else {
const uint8_t *base = &src[src_voffset * sstride + src_hoffset];
cdef_copy_rect8_8bit_to_16bit(dst, dstride, base, sstride, vsize, hsize);
}
}
static INLINE void fill_rect(uint16_t *dst, int dstride, int v, int h,
uint16_t x) {
for (int i = 0; i < v; i++) {
for (int j = 0; j < h; j++) {
dst[i * dstride + j] = x;
}
}
}
static INLINE void copy_rect(uint16_t *dst, int dstride, const uint16_t *src,
int sstride, int v, int h) {
for (int i = 0; i < v; i++) {
for (int j = 0; j < h; j++) {
dst[i * dstride + j] = src[i * sstride + j];
}
}
}
void av1_cdef_frame(YV12_BUFFER_CONFIG *frame, AV1_COMMON *cm,
MACROBLOCKD *xd) {
const CdefInfo *const cdef_info = &cm->cdef_info;
const int num_planes = av1_num_planes(cm);
DECLARE_ALIGNED(16, uint16_t, src[CDEF_INBUF_SIZE]);
uint16_t *linebuf[3];
uint16_t *colbuf[3];
cdef_list dlist[MI_SIZE_64X64 * MI_SIZE_64X64];
unsigned char *row_cdef, *prev_row_cdef, *curr_row_cdef;
int cdef_count;
int dir[CDEF_NBLOCKS][CDEF_NBLOCKS] = { { 0 } };
int var[CDEF_NBLOCKS][CDEF_NBLOCKS] = { { 0 } };
int mi_wide_l2[3];
int mi_high_l2[3];
int xdec[3];
int ydec[3];
int coeff_shift = AOMMAX(cm->seq_params.bit_depth - 8, 0);
const int nvfb = (cm->mi_rows + MI_SIZE_64X64 - 1) / MI_SIZE_64X64;
const int nhfb = (cm->mi_cols + MI_SIZE_64X64 - 1) / MI_SIZE_64X64;
av1_setup_dst_planes(xd->plane, cm->seq_params.sb_size, frame, 0, 0, 0,
num_planes);
row_cdef = aom_malloc(sizeof(*row_cdef) * (nhfb + 2) * 2);
memset(row_cdef, 1, sizeof(*row_cdef) * (nhfb + 2) * 2);
prev_row_cdef = row_cdef + 1;
curr_row_cdef = prev_row_cdef + nhfb + 2;
for (int pli = 0; pli < num_planes; pli++) {
xdec[pli] = xd->plane[pli].subsampling_x;
ydec[pli] = xd->plane[pli].subsampling_y;
mi_wide_l2[pli] = MI_SIZE_LOG2 - xd->plane[pli].subsampling_x;
mi_high_l2[pli] = MI_SIZE_LOG2 - xd->plane[pli].subsampling_y;
}
const int stride = (cm->mi_cols << MI_SIZE_LOG2) + 2 * CDEF_HBORDER;
for (int pli = 0; pli < num_planes; pli++) {
linebuf[pli] = aom_malloc(sizeof(*linebuf) * CDEF_VBORDER * stride);
colbuf[pli] =
aom_malloc(sizeof(*colbuf) *
((CDEF_BLOCKSIZE << mi_high_l2[pli]) + 2 * CDEF_VBORDER) *
CDEF_HBORDER);
}
for (int fbr = 0; fbr < nvfb; fbr++) {
for (int pli = 0; pli < num_planes; pli++) {
const int block_height =
(MI_SIZE_64X64 << mi_high_l2[pli]) + 2 * CDEF_VBORDER;
fill_rect(colbuf[pli], CDEF_HBORDER, block_height, CDEF_HBORDER,
CDEF_VERY_LARGE);
}
int cdef_left = 1;
for (int fbc = 0; fbc < nhfb; fbc++) {
int level, sec_strength;
int uv_level, uv_sec_strength;
int nhb, nvb;
int cstart = 0;
curr_row_cdef[fbc] = 0;
if (cm->mi_grid_base[MI_SIZE_64X64 * fbr * cm->mi_stride +
MI_SIZE_64X64 * fbc] == NULL ||
cm->mi_grid_base[MI_SIZE_64X64 * fbr * cm->mi_stride +
MI_SIZE_64X64 * fbc]
->cdef_strength == -1) {
cdef_left = 0;
continue;
}
if (!cdef_left) cstart = -CDEF_HBORDER;
nhb = AOMMIN(MI_SIZE_64X64, cm->mi_cols - MI_SIZE_64X64 * fbc);
nvb = AOMMIN(MI_SIZE_64X64, cm->mi_rows - MI_SIZE_64X64 * fbr);
int frame_top, frame_left, frame_bottom, frame_right;
int mi_row = MI_SIZE_64X64 * fbr;
int mi_col = MI_SIZE_64X64 * fbc;
// for the current filter block, it's top left corner mi structure (mi_tl)
// is first accessed to check whether the top and left boundaries are
// frame boundaries. Then bottom-left and top-right mi structures are
// accessed to check whether the bottom and right boundaries
// (respectively) are frame boundaries.
//
// Note that we can't just check the bottom-right mi structure - eg. if
// we're at the right-hand edge of the frame but not the bottom, then
// the bottom-right mi is NULL but the bottom-left is not.
frame_top = (mi_row == 0) ? 1 : 0;
frame_left = (mi_col == 0) ? 1 : 0;
if (fbr != nvfb - 1)
frame_bottom = (mi_row + MI_SIZE_64X64 == cm->mi_rows) ? 1 : 0;
else
frame_bottom = 1;
if (fbc != nhfb - 1)
frame_right = (mi_col + MI_SIZE_64X64 == cm->mi_cols) ? 1 : 0;
else
frame_right = 1;
const int mbmi_cdef_strength =
cm->mi_grid_base[MI_SIZE_64X64 * fbr * cm->mi_stride +
MI_SIZE_64X64 * fbc]
->cdef_strength;
level =
cdef_info->cdef_strengths[mbmi_cdef_strength] / CDEF_SEC_STRENGTHS;
sec_strength =
cdef_info->cdef_strengths[mbmi_cdef_strength] % CDEF_SEC_STRENGTHS;
sec_strength += sec_strength == 3;
uv_level =
cdef_info->cdef_uv_strengths[mbmi_cdef_strength] / CDEF_SEC_STRENGTHS;
uv_sec_strength =
cdef_info->cdef_uv_strengths[mbmi_cdef_strength] % CDEF_SEC_STRENGTHS;
uv_sec_strength += uv_sec_strength == 3;
if ((level == 0 && sec_strength == 0 && uv_level == 0 &&
uv_sec_strength == 0) ||
(cdef_count = av1_cdef_compute_sb_list(cm, fbr * MI_SIZE_64X64,
fbc * MI_SIZE_64X64, dlist,
BLOCK_64X64)) == 0) {
cdef_left = 0;
continue;
}
curr_row_cdef[fbc] = 1;
for (int pli = 0; pli < num_planes; pli++) {
int coffset;
int rend, cend;
int damping = cdef_info->cdef_damping;
int hsize = nhb << mi_wide_l2[pli];
int vsize = nvb << mi_high_l2[pli];
if (pli) {
level = uv_level;
sec_strength = uv_sec_strength;
}
if (fbc == nhfb - 1)
cend = hsize;
else
cend = hsize + CDEF_HBORDER;
if (fbr == nvfb - 1)
rend = vsize;
else
rend = vsize + CDEF_VBORDER;
coffset = fbc * MI_SIZE_64X64 << mi_wide_l2[pli];
if (fbc == nhfb - 1) {
/* On the last superblock column, fill in the right border with
CDEF_VERY_LARGE to avoid filtering with the outside. */
fill_rect(&src[cend + CDEF_HBORDER], CDEF_BSTRIDE,
rend + CDEF_VBORDER, hsize + CDEF_HBORDER - cend,
CDEF_VERY_LARGE);
}
if (fbr == nvfb - 1) {
/* On the last superblock row, fill in the bottom border with
CDEF_VERY_LARGE to avoid filtering with the outside. */
fill_rect(&src[(rend + CDEF_VBORDER) * CDEF_BSTRIDE], CDEF_BSTRIDE,
CDEF_VBORDER, hsize + 2 * CDEF_HBORDER, CDEF_VERY_LARGE);
}
/* Copy in the pixels we need from the current superblock for
deringing.*/
copy_sb8_16(cm,
&src[CDEF_VBORDER * CDEF_BSTRIDE + CDEF_HBORDER + cstart],
CDEF_BSTRIDE, xd->plane[pli].dst.buf,
(MI_SIZE_64X64 << mi_high_l2[pli]) * fbr, coffset + cstart,
xd->plane[pli].dst.stride, rend, cend - cstart);
if (!prev_row_cdef[fbc]) {
copy_sb8_16(cm, &src[CDEF_HBORDER], CDEF_BSTRIDE,
xd->plane[pli].dst.buf,
(MI_SIZE_64X64 << mi_high_l2[pli]) * fbr - CDEF_VBORDER,
coffset, xd->plane[pli].dst.stride, CDEF_VBORDER, hsize);
} else if (fbr > 0) {
copy_rect(&src[CDEF_HBORDER], CDEF_BSTRIDE, &linebuf[pli][coffset],
stride, CDEF_VBORDER, hsize);
} else {
fill_rect(&src[CDEF_HBORDER], CDEF_BSTRIDE, CDEF_VBORDER, hsize,
CDEF_VERY_LARGE);
}
if (!prev_row_cdef[fbc - 1]) {
copy_sb8_16(cm, src, CDEF_BSTRIDE, xd->plane[pli].dst.buf,
(MI_SIZE_64X64 << mi_high_l2[pli]) * fbr - CDEF_VBORDER,
coffset - CDEF_HBORDER, xd->plane[pli].dst.stride,
CDEF_VBORDER, CDEF_HBORDER);
} else if (fbr > 0 && fbc > 0) {
copy_rect(src, CDEF_BSTRIDE, &linebuf[pli][coffset - CDEF_HBORDER],
stride, CDEF_VBORDER, CDEF_HBORDER);
} else {
fill_rect(src, CDEF_BSTRIDE, CDEF_VBORDER, CDEF_HBORDER,
CDEF_VERY_LARGE);
}
if (!prev_row_cdef[fbc + 1]) {
copy_sb8_16(cm, &src[CDEF_HBORDER + (nhb << mi_wide_l2[pli])],
CDEF_BSTRIDE, xd->plane[pli].dst.buf,
(MI_SIZE_64X64 << mi_high_l2[pli]) * fbr - CDEF_VBORDER,
coffset + hsize, xd->plane[pli].dst.stride, CDEF_VBORDER,
CDEF_HBORDER);
} else if (fbr > 0 && fbc < nhfb - 1) {
copy_rect(&src[hsize + CDEF_HBORDER], CDEF_BSTRIDE,
&linebuf[pli][coffset + hsize], stride, CDEF_VBORDER,
CDEF_HBORDER);
} else {
fill_rect(&src[hsize + CDEF_HBORDER], CDEF_BSTRIDE, CDEF_VBORDER,
CDEF_HBORDER, CDEF_VERY_LARGE);
}
if (cdef_left) {
/* If we deringed the superblock on the left then we need to copy in
saved pixels. */
copy_rect(src, CDEF_BSTRIDE, colbuf[pli], CDEF_HBORDER,
rend + CDEF_VBORDER, CDEF_HBORDER);
}
/* Saving pixels in case we need to dering the superblock on the
right. */
copy_rect(colbuf[pli], CDEF_HBORDER, src + hsize, CDEF_BSTRIDE,
rend + CDEF_VBORDER, CDEF_HBORDER);
copy_sb8_16(
cm, &linebuf[pli][coffset], stride, xd->plane[pli].dst.buf,
(MI_SIZE_64X64 << mi_high_l2[pli]) * (fbr + 1) - CDEF_VBORDER,
coffset, xd->plane[pli].dst.stride, CDEF_VBORDER, hsize);
if (frame_top) {
fill_rect(src, CDEF_BSTRIDE, CDEF_VBORDER, hsize + 2 * CDEF_HBORDER,
CDEF_VERY_LARGE);
}
if (frame_left) {
fill_rect(src, CDEF_BSTRIDE, vsize + 2 * CDEF_VBORDER, CDEF_HBORDER,
CDEF_VERY_LARGE);
}
if (frame_bottom) {
fill_rect(&src[(vsize + CDEF_VBORDER) * CDEF_BSTRIDE], CDEF_BSTRIDE,
CDEF_VBORDER, hsize + 2 * CDEF_HBORDER, CDEF_VERY_LARGE);
}
if (frame_right) {
fill_rect(&src[hsize + CDEF_HBORDER], CDEF_BSTRIDE,
vsize + 2 * CDEF_VBORDER, CDEF_HBORDER, CDEF_VERY_LARGE);
}
if (cm->seq_params.use_highbitdepth) {
av1_cdef_filter_fb(
NULL,
&CONVERT_TO_SHORTPTR(
xd->plane[pli]
.dst.buf)[xd->plane[pli].dst.stride *
(MI_SIZE_64X64 * fbr << mi_high_l2[pli]) +
(fbc * MI_SIZE_64X64 << mi_wide_l2[pli])],
xd->plane[pli].dst.stride,
&src[CDEF_VBORDER * CDEF_BSTRIDE + CDEF_HBORDER], xdec[pli],
ydec[pli], dir, NULL, var, pli, dlist, cdef_count, level,
sec_strength, damping, coeff_shift);
} else {
av1_cdef_filter_fb(
&xd->plane[pli]
.dst.buf[xd->plane[pli].dst.stride *
(MI_SIZE_64X64 * fbr << mi_high_l2[pli]) +
(fbc * MI_SIZE_64X64 << mi_wide_l2[pli])],
NULL, xd->plane[pli].dst.stride,
&src[CDEF_VBORDER * CDEF_BSTRIDE + CDEF_HBORDER], xdec[pli],
ydec[pli], dir, NULL, var, pli, dlist, cdef_count, level,
sec_strength, damping, coeff_shift);
}
}
cdef_left = 1;
}
{
unsigned char *tmp = prev_row_cdef;
prev_row_cdef = curr_row_cdef;
curr_row_cdef = tmp;
}
}
aom_free(row_cdef);
for (int pli = 0; pli < num_planes; pli++) {
aom_free(linebuf[pli]);
aom_free(colbuf[pli]);
}
}