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aom/av1/encoder/pickrst.c

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C
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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 <float.h>
#include <limits.h>
#include <math.h>
#include "./aom_scale_rtcd.h"
#include "aom_dsp/aom_dsp_common.h"
#include "aom_dsp/binary_codes_writer.h"
#include "aom_dsp/psnr.h"
#include "aom_mem/aom_mem.h"
#include "aom_ports/mem.h"
#include "aom_ports/system_state.h"
#include "av1/common/onyxc_int.h"
#include "av1/common/quant_common.h"
#include "av1/common/restoration.h"
#include "av1/encoder/av1_quantize.h"
#include "av1/encoder/encoder.h"
#include "av1/encoder/picklpf.h"
#include "av1/encoder/pickrst.h"
#include "av1/encoder/mathutils.h"
// When set to RESTORE_WIENER or RESTORE_SGRPROJ only those are allowed.
// When set to RESTORE_NONE (0) we allow switchable.
const RestorationType force_restore_type = RESTORE_NONE;
// Number of Wiener iterations
#define NUM_WIENER_ITERS 5
typedef double (*search_restore_type)(const YV12_BUFFER_CONFIG *src,
AV1_COMP *cpi, int partial_frame,
int plane, RestorationInfo *info,
RestorationType *rest_level,
double *best_tile_cost,
YV12_BUFFER_CONFIG *dst_frame);
const int frame_level_restore_bits[RESTORE_TYPES] = { 2, 2, 2, 2 };
static int64_t sse_restoration_tile(const YV12_BUFFER_CONFIG *src,
const YV12_BUFFER_CONFIG *dst,
const AV1_COMMON *cm, int h_start,
int width, int v_start, int height,
int components_pattern) {
int64_t filt_err = 0;
(void)cm;
// Y and UV components cannot be mixed
assert(components_pattern == 1 || components_pattern == 2 ||
components_pattern == 4 || components_pattern == 6);
#if CONFIG_HIGHBITDEPTH
if (cm->use_highbitdepth) {
if ((components_pattern >> AOM_PLANE_Y) & 1) {
filt_err +=
aom_highbd_get_y_sse_part(src, dst, h_start, width, v_start, height);
}
if ((components_pattern >> AOM_PLANE_U) & 1) {
filt_err +=
aom_highbd_get_u_sse_part(src, dst, h_start, width, v_start, height);
}
if ((components_pattern >> AOM_PLANE_V) & 1) {
filt_err +=
aom_highbd_get_v_sse_part(src, dst, h_start, width, v_start, height);
}
return filt_err;
}
#endif // CONFIG_HIGHBITDEPTH
if ((components_pattern >> AOM_PLANE_Y) & 1) {
filt_err += aom_get_y_sse_part(src, dst, h_start, width, v_start, height);
}
if ((components_pattern >> AOM_PLANE_U) & 1) {
filt_err += aom_get_u_sse_part(src, dst, h_start, width, v_start, height);
}
if ((components_pattern >> AOM_PLANE_V) & 1) {
filt_err += aom_get_v_sse_part(src, dst, h_start, width, v_start, height);
}
return filt_err;
}
static int64_t sse_restoration_frame(AV1_COMMON *const cm,
const YV12_BUFFER_CONFIG *src,
const YV12_BUFFER_CONFIG *dst,
int components_pattern) {
int64_t filt_err = 0;
#if CONFIG_HIGHBITDEPTH
if (cm->use_highbitdepth) {
if ((components_pattern >> AOM_PLANE_Y) & 1) {
filt_err += aom_highbd_get_y_sse(src, dst);
}
if ((components_pattern >> AOM_PLANE_U) & 1) {
filt_err += aom_highbd_get_u_sse(src, dst);
}
if ((components_pattern >> AOM_PLANE_V) & 1) {
filt_err += aom_highbd_get_v_sse(src, dst);
}
return filt_err;
}
#else
(void)cm;
#endif // CONFIG_HIGHBITDEPTH
if ((components_pattern >> AOM_PLANE_Y) & 1) {
filt_err = aom_get_y_sse(src, dst);
}
if ((components_pattern >> AOM_PLANE_U) & 1) {
filt_err += aom_get_u_sse(src, dst);
}
if ((components_pattern >> AOM_PLANE_V) & 1) {
filt_err += aom_get_v_sse(src, dst);
}
return filt_err;
}
static int64_t try_restoration_tile(const YV12_BUFFER_CONFIG *src,
AV1_COMP *const cpi, RestorationInfo *rsi,
int components_pattern, int partial_frame,
int tile_idx, int subtile_idx,
int subtile_bits,
YV12_BUFFER_CONFIG *dst_frame) {
AV1_COMMON *const cm = &cpi->common;
int64_t filt_err;
int tile_width, tile_height, nhtiles, nvtiles;
int h_start, h_end, v_start, v_end;
int ntiles, width, height;
// Y and UV components cannot be mixed
assert(components_pattern == 1 || components_pattern == 2 ||
components_pattern == 4 || components_pattern == 6);
if (components_pattern == 1) { // Y only
width = src->y_crop_width;
height = src->y_crop_height;
} else { // Color
width = src->uv_crop_width;
height = src->uv_crop_height;
}
ntiles = av1_get_rest_ntiles(
width, height, cm->rst_info[components_pattern > 1].restoration_tilesize,
&tile_width, &tile_height, &nhtiles, &nvtiles);
(void)ntiles;
av1_loop_restoration_frame(cm->frame_to_show, cm, rsi, components_pattern,
partial_frame, dst_frame);
av1_get_rest_tile_limits(tile_idx, subtile_idx, subtile_bits, nhtiles,
nvtiles, tile_width, tile_height, width, height, 0,
0, &h_start, &h_end, &v_start, &v_end);
filt_err = sse_restoration_tile(src, dst_frame, cm, h_start, h_end - h_start,
v_start, v_end - v_start, components_pattern);
return filt_err;
}
static int64_t try_restoration_frame(const YV12_BUFFER_CONFIG *src,
AV1_COMP *const cpi, RestorationInfo *rsi,
int components_pattern, int partial_frame,
YV12_BUFFER_CONFIG *dst_frame) {
AV1_COMMON *const cm = &cpi->common;
int64_t filt_err;
av1_loop_restoration_frame(cm->frame_to_show, cm, rsi, components_pattern,
partial_frame, dst_frame);
filt_err = sse_restoration_frame(cm, src, dst_frame, components_pattern);
return filt_err;
}
static int64_t get_pixel_proj_error(uint8_t *src8, int width, int height,
int src_stride, uint8_t *dat8,
int dat_stride, int bit_depth,
int32_t *flt1, int flt1_stride,
int32_t *flt2, int flt2_stride, int *xqd) {
int i, j;
int64_t err = 0;
int xq[2];
decode_xq(xqd, xq);
if (bit_depth == 8) {
const uint8_t *src = src8;
const uint8_t *dat = dat8;
for (i = 0; i < height; ++i) {
for (j = 0; j < width; ++j) {
const int32_t u =
(int32_t)(dat[i * dat_stride + j] << SGRPROJ_RST_BITS);
const int32_t f1 = (int32_t)flt1[i * flt1_stride + j] - u;
const int32_t f2 = (int32_t)flt2[i * flt2_stride + j] - u;
const int32_t v = xq[0] * f1 + xq[1] * f2 + (u << SGRPROJ_PRJ_BITS);
const int32_t e =
ROUND_POWER_OF_TWO(v, SGRPROJ_RST_BITS + SGRPROJ_PRJ_BITS) -
src[i * src_stride + j];
err += e * e;
}
}
} else {
const uint16_t *src = CONVERT_TO_SHORTPTR(src8);
const uint16_t *dat = CONVERT_TO_SHORTPTR(dat8);
for (i = 0; i < height; ++i) {
for (j = 0; j < width; ++j) {
const int32_t u =
(int32_t)(dat[i * dat_stride + j] << SGRPROJ_RST_BITS);
const int32_t f1 = (int32_t)flt1[i * flt1_stride + j] - u;
const int32_t f2 = (int32_t)flt2[i * flt2_stride + j] - u;
const int32_t v = xq[0] * f1 + xq[1] * f2 + (u << SGRPROJ_PRJ_BITS);
const int32_t e =
ROUND_POWER_OF_TWO(v, SGRPROJ_RST_BITS + SGRPROJ_PRJ_BITS) -
src[i * src_stride + j];
err += e * e;
}
}
}
return err;
}
#define USE_SGRPROJ_REFINEMENT_SEARCH 1
static int64_t finer_search_pixel_proj_error(
uint8_t *src8, int width, int height, int src_stride, uint8_t *dat8,
int dat_stride, int bit_depth, int32_t *flt1, int flt1_stride,
int32_t *flt2, int flt2_stride, int start_step, int *xqd) {
int64_t err = get_pixel_proj_error(src8, width, height, src_stride, dat8,
dat_stride, bit_depth, flt1, flt1_stride,
flt2, flt2_stride, xqd);
(void)start_step;
#if USE_SGRPROJ_REFINEMENT_SEARCH
int64_t err2;
int tap_min[] = { SGRPROJ_PRJ_MIN0, SGRPROJ_PRJ_MIN1 };
int tap_max[] = { SGRPROJ_PRJ_MAX0, SGRPROJ_PRJ_MAX1 };
for (int s = start_step; s >= 1; s >>= 1) {
for (int p = 0; p < 2; ++p) {
int skip = 0;
do {
if (xqd[p] - s >= tap_min[p]) {
xqd[p] -= s;
err2 = get_pixel_proj_error(src8, width, height, src_stride, dat8,
dat_stride, bit_depth, flt1, flt1_stride,
flt2, flt2_stride, xqd);
if (err2 > err) {
xqd[p] += s;
} else {
err = err2;
skip = 1;
// At the highest step size continue moving in the same direction
if (s == start_step) continue;
}
}
break;
} while (1);
if (skip) break;
do {
if (xqd[p] + s <= tap_max[p]) {
xqd[p] += s;
err2 = get_pixel_proj_error(src8, width, height, src_stride, dat8,
dat_stride, bit_depth, flt1, flt1_stride,
flt2, flt2_stride, xqd);
if (err2 > err) {
xqd[p] -= s;
} else {
err = err2;
// At the highest step size continue moving in the same direction
if (s == start_step) continue;
}
}
break;
} while (1);
}
}
#endif // USE_SGRPROJ_REFINEMENT_SEARCH
return err;
}
static void get_proj_subspace(uint8_t *src8, int width, int height,
int src_stride, uint8_t *dat8, int dat_stride,
int bit_depth, int32_t *flt1, int flt1_stride,
int32_t *flt2, int flt2_stride, int *xq) {
int i, j;
double H[2][2] = { { 0, 0 }, { 0, 0 } };
double C[2] = { 0, 0 };
double Det;
double x[2];
const int size = width * height;
aom_clear_system_state();
// Default
xq[0] = 0;
xq[1] = 0;
if (bit_depth == 8) {
const uint8_t *src = src8;
const uint8_t *dat = dat8;
for (i = 0; i < height; ++i) {
for (j = 0; j < width; ++j) {
const double u = (double)(dat[i * dat_stride + j] << SGRPROJ_RST_BITS);
const double s =
(double)(src[i * src_stride + j] << SGRPROJ_RST_BITS) - u;
const double f1 = (double)flt1[i * flt1_stride + j] - u;
const double f2 = (double)flt2[i * flt2_stride + j] - u;
H[0][0] += f1 * f1;
H[1][1] += f2 * f2;
H[0][1] += f1 * f2;
C[0] += f1 * s;
C[1] += f2 * s;
}
}
} else {
const uint16_t *src = CONVERT_TO_SHORTPTR(src8);
const uint16_t *dat = CONVERT_TO_SHORTPTR(dat8);
for (i = 0; i < height; ++i) {
for (j = 0; j < width; ++j) {
const double u = (double)(dat[i * dat_stride + j] << SGRPROJ_RST_BITS);
const double s =
(double)(src[i * src_stride + j] << SGRPROJ_RST_BITS) - u;
const double f1 = (double)flt1[i * flt1_stride + j] - u;
const double f2 = (double)flt2[i * flt2_stride + j] - u;
H[0][0] += f1 * f1;
H[1][1] += f2 * f2;
H[0][1] += f1 * f2;
C[0] += f1 * s;
C[1] += f2 * s;
}
}
}
H[0][0] /= size;
H[0][1] /= size;
H[1][1] /= size;
H[1][0] = H[0][1];
C[0] /= size;
C[1] /= size;
Det = (H[0][0] * H[1][1] - H[0][1] * H[1][0]);
if (Det < 1e-8) return; // ill-posed, return default values
x[0] = (H[1][1] * C[0] - H[0][1] * C[1]) / Det;
x[1] = (H[0][0] * C[1] - H[1][0] * C[0]) / Det;
xq[0] = (int)rint(x[0] * (1 << SGRPROJ_PRJ_BITS));
xq[1] = (int)rint(x[1] * (1 << SGRPROJ_PRJ_BITS));
}
void encode_xq(int *xq, int *xqd) {
xqd[0] = xq[0];
xqd[0] = clamp(xqd[0], SGRPROJ_PRJ_MIN0, SGRPROJ_PRJ_MAX0);
xqd[1] = (1 << SGRPROJ_PRJ_BITS) - xqd[0] - xq[1];
xqd[1] = clamp(xqd[1], SGRPROJ_PRJ_MIN1, SGRPROJ_PRJ_MAX1);
}
static void search_selfguided_restoration(uint8_t *dat8, int width, int height,
int dat_stride, uint8_t *src8,
int src_stride, int bit_depth,
int *eps, int *xqd, int32_t *rstbuf) {
int32_t *flt1 = rstbuf;
int32_t *flt2 = flt1 + RESTORATION_TILEPELS_MAX;
int32_t *tmpbuf2 = flt2 + RESTORATION_TILEPELS_MAX;
int ep, bestep = 0;
int64_t err, besterr = -1;
int exqd[2], bestxqd[2] = { 0, 0 };
for (ep = 0; ep < SGRPROJ_PARAMS; ep++) {
int exq[2];
#if CONFIG_HIGHBITDEPTH
if (bit_depth > 8) {
uint16_t *dat = CONVERT_TO_SHORTPTR(dat8);
#if USE_HIGHPASS_IN_SGRPROJ
av1_highpass_filter_highbd(dat, width, height, dat_stride, flt1, width,
sgr_params[ep].corner, sgr_params[ep].edge);
#else
av1_selfguided_restoration_highbd(dat, width, height, dat_stride, flt1,
width, bit_depth, sgr_params[ep].r1,
sgr_params[ep].e1, tmpbuf2);
#endif // USE_HIGHPASS_IN_SGRPROJ
av1_selfguided_restoration_highbd(dat, width, height, dat_stride, flt2,
width, bit_depth, sgr_params[ep].r2,
sgr_params[ep].e2, tmpbuf2);
} else {
#endif
#if USE_HIGHPASS_IN_SGRPROJ
av1_highpass_filter(dat8, width, height, dat_stride, flt1, width,
sgr_params[ep].corner, sgr_params[ep].edge);
#else
av1_selfguided_restoration(dat8, width, height, dat_stride, flt1, width,
sgr_params[ep].r1, sgr_params[ep].e1, tmpbuf2);
#endif // USE_HIGHPASS_IN_SGRPROJ
av1_selfguided_restoration(dat8, width, height, dat_stride, flt2, width,
sgr_params[ep].r2, sgr_params[ep].e2, tmpbuf2);
#if CONFIG_HIGHBITDEPTH
}
#endif
aom_clear_system_state();
get_proj_subspace(src8, width, height, src_stride, dat8, dat_stride,
bit_depth, flt1, width, flt2, width, exq);
aom_clear_system_state();
encode_xq(exq, exqd);
err = finer_search_pixel_proj_error(src8, width, height, src_stride, dat8,
dat_stride, bit_depth, flt1, width,
flt2, width, 2, exqd);
if (besterr == -1 || err < besterr) {
bestep = ep;
besterr = err;
bestxqd[0] = exqd[0];
bestxqd[1] = exqd[1];
}
}
*eps = bestep;
xqd[0] = bestxqd[0];
xqd[1] = bestxqd[1];
}
static int count_sgrproj_bits(SgrprojInfo *sgrproj_info,
SgrprojInfo *ref_sgrproj_info) {
int bits = SGRPROJ_PARAMS_BITS;
bits += aom_count_primitive_refsubexpfin(
SGRPROJ_PRJ_MAX0 - SGRPROJ_PRJ_MIN0 + 1, SGRPROJ_PRJ_SUBEXP_K,
ref_sgrproj_info->xqd[0] - SGRPROJ_PRJ_MIN0,
sgrproj_info->xqd[0] - SGRPROJ_PRJ_MIN0);
bits += aom_count_primitive_refsubexpfin(
SGRPROJ_PRJ_MAX1 - SGRPROJ_PRJ_MIN1 + 1, SGRPROJ_PRJ_SUBEXP_K,
ref_sgrproj_info->xqd[1] - SGRPROJ_PRJ_MIN1,
sgrproj_info->xqd[1] - SGRPROJ_PRJ_MIN1);
return bits;
}
static double search_sgrproj(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi,
int partial_frame, int plane,
RestorationInfo *info, RestorationType *type,
double *best_tile_cost,
YV12_BUFFER_CONFIG *dst_frame) {
SgrprojInfo *sgrproj_info = info->sgrproj_info;
double err, cost_norestore, cost_sgrproj;
int bits;
MACROBLOCK *x = &cpi->td.mb;
AV1_COMMON *const cm = &cpi->common;
const YV12_BUFFER_CONFIG *dgd = cm->frame_to_show;
RestorationInfo *rsi = &cpi->rst_search[0];
int tile_idx, tile_width, tile_height, nhtiles, nvtiles;
int h_start, h_end, v_start, v_end;
int width, height, src_stride, dgd_stride;
uint8_t *dgd_buffer, *src_buffer;
if (plane == AOM_PLANE_Y) {
width = src->y_crop_width;
height = src->y_crop_height;
src_buffer = src->y_buffer;
src_stride = src->y_stride;
dgd_buffer = dgd->y_buffer;
dgd_stride = dgd->y_stride;
assert(width == dgd->y_crop_width);
assert(height == dgd->y_crop_height);
assert(width == src->y_crop_width);
assert(height == src->y_crop_height);
} else {
width = src->uv_crop_width;
height = src->uv_crop_height;
src_stride = src->uv_stride;
dgd_stride = dgd->uv_stride;
src_buffer = plane == AOM_PLANE_U ? src->u_buffer : src->v_buffer;
dgd_buffer = plane == AOM_PLANE_U ? dgd->u_buffer : dgd->v_buffer;
assert(width == dgd->uv_crop_width);
assert(height == dgd->uv_crop_height);
}
const int ntiles =
av1_get_rest_ntiles(width, height, cm->rst_info[0].restoration_tilesize,
&tile_width, &tile_height, &nhtiles, &nvtiles);
SgrprojInfo ref_sgrproj_info;
set_default_sgrproj(&ref_sgrproj_info);
rsi[plane].frame_restoration_type = RESTORE_SGRPROJ;
for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) {
rsi[plane].restoration_type[tile_idx] = RESTORE_NONE;
}
// Compute best Sgrproj filters for each tile
for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) {
av1_get_rest_tile_limits(tile_idx, 0, 0, nhtiles, nvtiles, tile_width,
tile_height, width, height, 0, 0, &h_start, &h_end,
&v_start, &v_end);
err = sse_restoration_tile(src, cm->frame_to_show, cm, h_start,
h_end - h_start, v_start, v_end - v_start,
(1 << plane));
// #bits when a tile is not restored
bits = av1_cost_bit(RESTORE_NONE_SGRPROJ_PROB, 0);
cost_norestore = RDCOST_DBL(x->rdmult, (bits >> 4), err);
best_tile_cost[tile_idx] = DBL_MAX;
search_selfguided_restoration(
dgd_buffer + v_start * dgd_stride + h_start, h_end - h_start,
v_end - v_start, dgd_stride,
src_buffer + v_start * src_stride + h_start, src_stride,
#if CONFIG_HIGHBITDEPTH
cm->bit_depth,
#else
8,
#endif // CONFIG_HIGHBITDEPTH
&rsi[plane].sgrproj_info[tile_idx].ep,
rsi[plane].sgrproj_info[tile_idx].xqd, cm->rst_internal.tmpbuf);
rsi[plane].restoration_type[tile_idx] = RESTORE_SGRPROJ;
err = try_restoration_tile(src, cpi, rsi, (1 << plane), partial_frame,
tile_idx, 0, 0, dst_frame);
bits = count_sgrproj_bits(&rsi[plane].sgrproj_info[tile_idx],
&ref_sgrproj_info)
<< AV1_PROB_COST_SHIFT;
bits += av1_cost_bit(RESTORE_NONE_SGRPROJ_PROB, 1);
cost_sgrproj = RDCOST_DBL(x->rdmult, (bits >> 4), err);
if (cost_sgrproj >= cost_norestore) {
type[tile_idx] = RESTORE_NONE;
} else {
type[tile_idx] = RESTORE_SGRPROJ;
memcpy(&sgrproj_info[tile_idx], &rsi[plane].sgrproj_info[tile_idx],
sizeof(sgrproj_info[tile_idx]));
memcpy(&ref_sgrproj_info, &sgrproj_info[tile_idx],
sizeof(ref_sgrproj_info));
best_tile_cost[tile_idx] = err;
}
rsi[plane].restoration_type[tile_idx] = RESTORE_NONE;
}
// Cost for Sgrproj filtering
set_default_sgrproj(&ref_sgrproj_info);
bits = frame_level_restore_bits[rsi[plane].frame_restoration_type]
<< AV1_PROB_COST_SHIFT;
for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) {
bits +=
av1_cost_bit(RESTORE_NONE_SGRPROJ_PROB, type[tile_idx] != RESTORE_NONE);
memcpy(&rsi[plane].sgrproj_info[tile_idx], &sgrproj_info[tile_idx],
sizeof(sgrproj_info[tile_idx]));
if (type[tile_idx] == RESTORE_SGRPROJ) {
bits += count_sgrproj_bits(&rsi[plane].sgrproj_info[tile_idx],
&ref_sgrproj_info)
<< AV1_PROB_COST_SHIFT;
memcpy(&ref_sgrproj_info, &rsi[plane].sgrproj_info[tile_idx],
sizeof(ref_sgrproj_info));
}
rsi[plane].restoration_type[tile_idx] = type[tile_idx];
}
err = try_restoration_frame(src, cpi, rsi, (1 << plane), partial_frame,
dst_frame);
cost_sgrproj = RDCOST_DBL(x->rdmult, (bits >> 4), err);
return cost_sgrproj;
}
static double find_average(uint8_t *src, int h_start, int h_end, int v_start,
int v_end, int stride) {
uint64_t sum = 0;
double avg = 0;
int i, j;
aom_clear_system_state();
for (i = v_start; i < v_end; i++)
for (j = h_start; j < h_end; j++) sum += src[i * stride + j];
avg = (double)sum / ((v_end - v_start) * (h_end - h_start));
return avg;
}
static void compute_stats(uint8_t *dgd, uint8_t *src, int h_start, int h_end,
int v_start, int v_end, int dgd_stride,
int src_stride, double *M, double *H) {
int i, j, k, l;
double Y[WIENER_WIN2];
const double avg =
find_average(dgd, h_start, h_end, v_start, v_end, dgd_stride);
memset(M, 0, sizeof(*M) * WIENER_WIN2);
memset(H, 0, sizeof(*H) * WIENER_WIN2 * WIENER_WIN2);
for (i = v_start; i < v_end; i++) {
for (j = h_start; j < h_end; j++) {
const double X = (double)src[i * src_stride + j] - avg;
int idx = 0;
for (k = -WIENER_HALFWIN; k <= WIENER_HALFWIN; k++) {
for (l = -WIENER_HALFWIN; l <= WIENER_HALFWIN; l++) {
Y[idx] = (double)dgd[(i + l) * dgd_stride + (j + k)] - avg;
idx++;
}
}
for (k = 0; k < WIENER_WIN2; ++k) {
M[k] += Y[k] * X;
H[k * WIENER_WIN2 + k] += Y[k] * Y[k];
for (l = k + 1; l < WIENER_WIN2; ++l) {
// H is a symmetric matrix, so we only need to fill out the upper
// triangle here. We can copy it down to the lower triangle outside
// the (i, j) loops.
H[k * WIENER_WIN2 + l] += Y[k] * Y[l];
}
}
}
}
for (k = 0; k < WIENER_WIN2; ++k) {
for (l = k + 1; l < WIENER_WIN2; ++l) {
H[l * WIENER_WIN2 + k] = H[k * WIENER_WIN2 + l];
}
}
}
#if CONFIG_HIGHBITDEPTH
static double find_average_highbd(uint16_t *src, int h_start, int h_end,
int v_start, int v_end, int stride) {
uint64_t sum = 0;
double avg = 0;
int i, j;
aom_clear_system_state();
for (i = v_start; i < v_end; i++)
for (j = h_start; j < h_end; j++) sum += src[i * stride + j];
avg = (double)sum / ((v_end - v_start) * (h_end - h_start));
return avg;
}
static void compute_stats_highbd(uint8_t *dgd8, uint8_t *src8, int h_start,
int h_end, int v_start, int v_end,
int dgd_stride, int src_stride, double *M,
double *H) {
int i, j, k, l;
double Y[WIENER_WIN2];
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *dgd = CONVERT_TO_SHORTPTR(dgd8);
const double avg =
find_average_highbd(dgd, h_start, h_end, v_start, v_end, dgd_stride);
memset(M, 0, sizeof(*M) * WIENER_WIN2);
memset(H, 0, sizeof(*H) * WIENER_WIN2 * WIENER_WIN2);
for (i = v_start; i < v_end; i++) {
for (j = h_start; j < h_end; j++) {
const double X = (double)src[i * src_stride + j] - avg;
int idx = 0;
for (k = -WIENER_HALFWIN; k <= WIENER_HALFWIN; k++) {
for (l = -WIENER_HALFWIN; l <= WIENER_HALFWIN; l++) {
Y[idx] = (double)dgd[(i + l) * dgd_stride + (j + k)] - avg;
idx++;
}
}
for (k = 0; k < WIENER_WIN2; ++k) {
M[k] += Y[k] * X;
H[k * WIENER_WIN2 + k] += Y[k] * Y[k];
for (l = k + 1; l < WIENER_WIN2; ++l) {
// H is a symmetric matrix, so we only need to fill out the upper
// triangle here. We can copy it down to the lower triangle outside
// the (i, j) loops.
H[k * WIENER_WIN2 + l] += Y[k] * Y[l];
}
}
}
}
for (k = 0; k < WIENER_WIN2; ++k) {
for (l = k + 1; l < WIENER_WIN2; ++l) {
H[l * WIENER_WIN2 + k] = H[k * WIENER_WIN2 + l];
}
}
}
#endif // CONFIG_HIGHBITDEPTH
static INLINE int wrap_index(int i) {
return (i >= WIENER_HALFWIN1 ? WIENER_WIN - 1 - i : i);
}
// Fix vector b, update vector a
static void update_a_sep_sym(double **Mc, double **Hc, double *a, double *b) {
int i, j;
double S[WIENER_WIN];
double A[WIENER_HALFWIN1], B[WIENER_HALFWIN1 * WIENER_HALFWIN1];
int w, w2;
memset(A, 0, sizeof(A));
memset(B, 0, sizeof(B));
for (i = 0; i < WIENER_WIN; i++) {
for (j = 0; j < WIENER_WIN; ++j) {
const int jj = wrap_index(j);
A[jj] += Mc[i][j] * b[i];
}
}
for (i = 0; i < WIENER_WIN; i++) {
for (j = 0; j < WIENER_WIN; j++) {
int k, l;
for (k = 0; k < WIENER_WIN; ++k)
for (l = 0; l < WIENER_WIN; ++l) {
const int kk = wrap_index(k);
const int ll = wrap_index(l);
B[ll * WIENER_HALFWIN1 + kk] +=
Hc[j * WIENER_WIN + i][k * WIENER_WIN2 + l] * b[i] * b[j];
}
}
}
// Normalization enforcement in the system of equations itself
w = WIENER_WIN;
w2 = (w >> 1) + 1;
for (i = 0; i < w2 - 1; ++i)
A[i] -=
A[w2 - 1] * 2 + B[i * w2 + w2 - 1] - 2 * B[(w2 - 1) * w2 + (w2 - 1)];
for (i = 0; i < w2 - 1; ++i)
for (j = 0; j < w2 - 1; ++j)
B[i * w2 + j] -= 2 * (B[i * w2 + (w2 - 1)] + B[(w2 - 1) * w2 + j] -
2 * B[(w2 - 1) * w2 + (w2 - 1)]);
if (linsolve(w2 - 1, B, w2, A, S)) {
S[w2 - 1] = 1.0;
for (i = w2; i < w; ++i) {
S[i] = S[w - 1 - i];
S[w2 - 1] -= 2 * S[i];
}
memcpy(a, S, w * sizeof(*a));
}
}
// Fix vector a, update vector b
static void update_b_sep_sym(double **Mc, double **Hc, double *a, double *b) {
int i, j;
double S[WIENER_WIN];
double A[WIENER_HALFWIN1], B[WIENER_HALFWIN1 * WIENER_HALFWIN1];
int w, w2;
memset(A, 0, sizeof(A));
memset(B, 0, sizeof(B));
for (i = 0; i < WIENER_WIN; i++) {
const int ii = wrap_index(i);
for (j = 0; j < WIENER_WIN; j++) A[ii] += Mc[i][j] * a[j];
}
for (i = 0; i < WIENER_WIN; i++) {
for (j = 0; j < WIENER_WIN; j++) {
const int ii = wrap_index(i);
const int jj = wrap_index(j);
int k, l;
for (k = 0; k < WIENER_WIN; ++k)
for (l = 0; l < WIENER_WIN; ++l)
B[jj * WIENER_HALFWIN1 + ii] +=
Hc[i * WIENER_WIN + j][k * WIENER_WIN2 + l] * a[k] * a[l];
}
}
// Normalization enforcement in the system of equations itself
w = WIENER_WIN;
w2 = WIENER_HALFWIN1;
for (i = 0; i < w2 - 1; ++i)
A[i] -=
A[w2 - 1] * 2 + B[i * w2 + w2 - 1] - 2 * B[(w2 - 1) * w2 + (w2 - 1)];
for (i = 0; i < w2 - 1; ++i)
for (j = 0; j < w2 - 1; ++j)
B[i * w2 + j] -= 2 * (B[i * w2 + (w2 - 1)] + B[(w2 - 1) * w2 + j] -
2 * B[(w2 - 1) * w2 + (w2 - 1)]);
if (linsolve(w2 - 1, B, w2, A, S)) {
S[w2 - 1] = 1.0;
for (i = w2; i < w; ++i) {
S[i] = S[w - 1 - i];
S[w2 - 1] -= 2 * S[i];
}
memcpy(b, S, w * sizeof(*b));
}
}
static int wiener_decompose_sep_sym(double *M, double *H, double *a,
double *b) {
static const int init_filt[WIENER_WIN] = {
WIENER_FILT_TAP0_MIDV, WIENER_FILT_TAP1_MIDV, WIENER_FILT_TAP2_MIDV,
WIENER_FILT_TAP3_MIDV, WIENER_FILT_TAP2_MIDV, WIENER_FILT_TAP1_MIDV,
WIENER_FILT_TAP0_MIDV,
};
int i, j, iter;
double *Hc[WIENER_WIN2];
double *Mc[WIENER_WIN];
for (i = 0; i < WIENER_WIN; i++) {
Mc[i] = M + i * WIENER_WIN;
for (j = 0; j < WIENER_WIN; j++) {
Hc[i * WIENER_WIN + j] =
H + i * WIENER_WIN * WIENER_WIN2 + j * WIENER_WIN;
}
}
for (i = 0; i < WIENER_WIN; i++) {
a[i] = b[i] = (double)init_filt[i] / WIENER_FILT_STEP;
}
iter = 1;
while (iter < NUM_WIENER_ITERS) {
update_a_sep_sym(Mc, Hc, a, b);
update_b_sep_sym(Mc, Hc, a, b);
iter++;
}
return 1;
}
// Computes the function x'*H*x - x'*M for the learned 2D filter x, and compares
// against identity filters; Final score is defined as the difference between
// the function values
static double compute_score(double *M, double *H, InterpKernel vfilt,
InterpKernel hfilt) {
double ab[WIENER_WIN * WIENER_WIN];
int i, k, l;
double P = 0, Q = 0;
double iP = 0, iQ = 0;
double Score, iScore;
double a[WIENER_WIN], b[WIENER_WIN];
aom_clear_system_state();
a[WIENER_HALFWIN] = b[WIENER_HALFWIN] = 1.0;
for (i = 0; i < WIENER_HALFWIN; ++i) {
a[i] = a[WIENER_WIN - i - 1] = (double)vfilt[i] / WIENER_FILT_STEP;
b[i] = b[WIENER_WIN - i - 1] = (double)hfilt[i] / WIENER_FILT_STEP;
a[WIENER_HALFWIN] -= 2 * a[i];
b[WIENER_HALFWIN] -= 2 * b[i];
}
for (k = 0; k < WIENER_WIN; ++k) {
for (l = 0; l < WIENER_WIN; ++l) ab[k * WIENER_WIN + l] = a[l] * b[k];
}
for (k = 0; k < WIENER_WIN2; ++k) {
P += ab[k] * M[k];
for (l = 0; l < WIENER_WIN2; ++l)
Q += ab[k] * H[k * WIENER_WIN2 + l] * ab[l];
}
Score = Q - 2 * P;
iP = M[WIENER_WIN2 >> 1];
iQ = H[(WIENER_WIN2 >> 1) * WIENER_WIN2 + (WIENER_WIN2 >> 1)];
iScore = iQ - 2 * iP;
return Score - iScore;
}
static void quantize_sym_filter(double *f, InterpKernel fi) {
int i;
for (i = 0; i < WIENER_HALFWIN; ++i) {
fi[i] = RINT(f[i] * WIENER_FILT_STEP);
}
// Specialize for 7-tap filter
fi[0] = CLIP(fi[0], WIENER_FILT_TAP0_MINV, WIENER_FILT_TAP0_MAXV);
fi[1] = CLIP(fi[1], WIENER_FILT_TAP1_MINV, WIENER_FILT_TAP1_MAXV);
fi[2] = CLIP(fi[2], WIENER_FILT_TAP2_MINV, WIENER_FILT_TAP2_MAXV);
// Satisfy filter constraints
fi[WIENER_WIN - 1] = fi[0];
fi[WIENER_WIN - 2] = fi[1];
fi[WIENER_WIN - 3] = fi[2];
// The central element has an implicit +WIENER_FILT_STEP
fi[3] = -2 * (fi[0] + fi[1] + fi[2]);
}
static int count_wiener_bits(WienerInfo *wiener_info,
WienerInfo *ref_wiener_info) {
int bits = 0;
bits += aom_count_primitive_refsubexpfin(
WIENER_FILT_TAP0_MAXV - WIENER_FILT_TAP0_MINV + 1,
WIENER_FILT_TAP0_SUBEXP_K,
ref_wiener_info->vfilter[0] - WIENER_FILT_TAP0_MINV,
wiener_info->vfilter[0] - WIENER_FILT_TAP0_MINV);
bits += aom_count_primitive_refsubexpfin(
WIENER_FILT_TAP1_MAXV - WIENER_FILT_TAP1_MINV + 1,
WIENER_FILT_TAP1_SUBEXP_K,
ref_wiener_info->vfilter[1] - WIENER_FILT_TAP1_MINV,
wiener_info->vfilter[1] - WIENER_FILT_TAP1_MINV);
bits += aom_count_primitive_refsubexpfin(
WIENER_FILT_TAP2_MAXV - WIENER_FILT_TAP2_MINV + 1,
WIENER_FILT_TAP2_SUBEXP_K,
ref_wiener_info->vfilter[2] - WIENER_FILT_TAP2_MINV,
wiener_info->vfilter[2] - WIENER_FILT_TAP2_MINV);
bits += aom_count_primitive_refsubexpfin(
WIENER_FILT_TAP0_MAXV - WIENER_FILT_TAP0_MINV + 1,
WIENER_FILT_TAP0_SUBEXP_K,
ref_wiener_info->hfilter[0] - WIENER_FILT_TAP0_MINV,
wiener_info->hfilter[0] - WIENER_FILT_TAP0_MINV);
bits += aom_count_primitive_refsubexpfin(
WIENER_FILT_TAP1_MAXV - WIENER_FILT_TAP1_MINV + 1,
WIENER_FILT_TAP1_SUBEXP_K,
ref_wiener_info->hfilter[1] - WIENER_FILT_TAP1_MINV,
wiener_info->hfilter[1] - WIENER_FILT_TAP1_MINV);
bits += aom_count_primitive_refsubexpfin(
WIENER_FILT_TAP2_MAXV - WIENER_FILT_TAP2_MINV + 1,
WIENER_FILT_TAP2_SUBEXP_K,
ref_wiener_info->hfilter[2] - WIENER_FILT_TAP2_MINV,
wiener_info->hfilter[2] - WIENER_FILT_TAP2_MINV);
return bits;
}
#define USE_WIENER_REFINEMENT_SEARCH 1
static int64_t finer_tile_search_wiener(const YV12_BUFFER_CONFIG *src,
AV1_COMP *cpi, RestorationInfo *rsi,
int start_step, int plane, int tile_idx,
int partial_frame,
YV12_BUFFER_CONFIG *dst_frame) {
int64_t err = try_restoration_tile(src, cpi, rsi, 1 << plane, partial_frame,
tile_idx, 0, 0, dst_frame);
(void)start_step;
#if USE_WIENER_REFINEMENT_SEARCH
int64_t err2;
int tap_min[] = { WIENER_FILT_TAP0_MINV, WIENER_FILT_TAP1_MINV,
WIENER_FILT_TAP2_MINV };
int tap_max[] = { WIENER_FILT_TAP0_MAXV, WIENER_FILT_TAP1_MAXV,
WIENER_FILT_TAP2_MAXV };
// printf("err pre = %"PRId64"\n", err);
for (int s = start_step; s >= 1; s >>= 1) {
for (int p = 0; p < WIENER_HALFWIN; ++p) {
int skip = 0;
do {
if (rsi[plane].wiener_info[tile_idx].hfilter[p] - s >= tap_min[p]) {
rsi[plane].wiener_info[tile_idx].hfilter[p] -= s;
rsi[plane].wiener_info[tile_idx].hfilter[WIENER_WIN - p - 1] -= s;
rsi[plane].wiener_info[tile_idx].hfilter[WIENER_HALFWIN] += 2 * s;
err2 = try_restoration_tile(src, cpi, rsi, 1 << plane, partial_frame,
tile_idx, 0, 0, dst_frame);
if (err2 > err) {
rsi[plane].wiener_info[tile_idx].hfilter[p] += s;
rsi[plane].wiener_info[tile_idx].hfilter[WIENER_WIN - p - 1] += s;
rsi[plane].wiener_info[tile_idx].hfilter[WIENER_HALFWIN] -= 2 * s;
} else {
err = err2;
skip = 1;
// At the highest step size continue moving in the same direction
if (s == start_step) continue;
}
}
break;
} while (1);
if (skip) break;
do {
if (rsi[plane].wiener_info[tile_idx].hfilter[p] + s <= tap_max[p]) {
rsi[plane].wiener_info[tile_idx].hfilter[p] += s;
rsi[plane].wiener_info[tile_idx].hfilter[WIENER_WIN - p - 1] += s;
rsi[plane].wiener_info[tile_idx].hfilter[WIENER_HALFWIN] -= 2 * s;
err2 = try_restoration_tile(src, cpi, rsi, 1 << plane, partial_frame,
tile_idx, 0, 0, dst_frame);
if (err2 > err) {
rsi[plane].wiener_info[tile_idx].hfilter[p] -= s;
rsi[plane].wiener_info[tile_idx].hfilter[WIENER_WIN - p - 1] -= s;
rsi[plane].wiener_info[tile_idx].hfilter[WIENER_HALFWIN] += 2 * s;
} else {
err = err2;
// At the highest step size continue moving in the same direction
if (s == start_step) continue;
}
}
break;
} while (1);
}
for (int p = 0; p < WIENER_HALFWIN; ++p) {
int skip = 0;
do {
if (rsi[plane].wiener_info[tile_idx].vfilter[p] - s >= tap_min[p]) {
rsi[plane].wiener_info[tile_idx].vfilter[p] -= s;
rsi[plane].wiener_info[tile_idx].vfilter[WIENER_WIN - p - 1] -= s;
rsi[plane].wiener_info[tile_idx].vfilter[WIENER_HALFWIN] += 2 * s;
err2 = try_restoration_tile(src, cpi, rsi, 1 << plane, partial_frame,
tile_idx, 0, 0, dst_frame);
if (err2 > err) {
rsi[plane].wiener_info[tile_idx].vfilter[p] += s;
rsi[plane].wiener_info[tile_idx].vfilter[WIENER_WIN - p - 1] += s;
rsi[plane].wiener_info[tile_idx].vfilter[WIENER_HALFWIN] -= 2 * s;
} else {
err = err2;
skip = 1;
// At the highest step size continue moving in the same direction
if (s == start_step) continue;
}
}
break;
} while (1);
if (skip) break;
do {
if (rsi[plane].wiener_info[tile_idx].vfilter[p] + s <= tap_max[p]) {
rsi[plane].wiener_info[tile_idx].vfilter[p] += s;
rsi[plane].wiener_info[tile_idx].vfilter[WIENER_WIN - p - 1] += s;
rsi[plane].wiener_info[tile_idx].vfilter[WIENER_HALFWIN] -= 2 * s;
err2 = try_restoration_tile(src, cpi, rsi, 1 << plane, partial_frame,
tile_idx, 0, 0, dst_frame);
if (err2 > err) {
rsi[plane].wiener_info[tile_idx].vfilter[p] -= s;
rsi[plane].wiener_info[tile_idx].vfilter[WIENER_WIN - p - 1] -= s;
rsi[plane].wiener_info[tile_idx].vfilter[WIENER_HALFWIN] += 2 * s;
} else {
err = err2;
// At the highest step size continue moving in the same direction
if (s == start_step) continue;
}
}
break;
} while (1);
}
}
// printf("err post = %"PRId64"\n", err);
#endif // USE_WIENER_REFINEMENT_SEARCH
return err;
}
static double search_wiener(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi,
int partial_frame, int plane, RestorationInfo *info,
RestorationType *type, double *best_tile_cost,
YV12_BUFFER_CONFIG *dst_frame) {
WienerInfo *wiener_info = info->wiener_info;
AV1_COMMON *const cm = &cpi->common;
RestorationInfo *rsi = cpi->rst_search;
int64_t err;
int bits;
double cost_wiener, cost_norestore;
MACROBLOCK *x = &cpi->td.mb;
double M[WIENER_WIN2];
double H[WIENER_WIN2 * WIENER_WIN2];
double vfilterd[WIENER_WIN], hfilterd[WIENER_WIN];
const YV12_BUFFER_CONFIG *dgd = cm->frame_to_show;
int width, height, src_stride, dgd_stride;
uint8_t *dgd_buffer, *src_buffer;
if (plane == AOM_PLANE_Y) {
width = src->y_crop_width;
height = src->y_crop_height;
src_buffer = src->y_buffer;
src_stride = src->y_stride;
dgd_buffer = dgd->y_buffer;
dgd_stride = dgd->y_stride;
assert(width == dgd->y_crop_width);
assert(height == dgd->y_crop_height);
assert(width == src->y_crop_width);
assert(height == src->y_crop_height);
} else {
width = src->uv_crop_width;
height = src->uv_crop_height;
src_stride = src->uv_stride;
dgd_stride = dgd->uv_stride;
src_buffer = plane == AOM_PLANE_U ? src->u_buffer : src->v_buffer;
dgd_buffer = plane == AOM_PLANE_U ? dgd->u_buffer : dgd->v_buffer;
assert(width == dgd->uv_crop_width);
assert(height == dgd->uv_crop_height);
}
double score;
int tile_idx, tile_width, tile_height, nhtiles, nvtiles;
int h_start, h_end, v_start, v_end;
const int ntiles = av1_get_rest_ntiles(
width, height, cm->rst_info[plane].restoration_tilesize, &tile_width,
&tile_height, &nhtiles, &nvtiles);
WienerInfo ref_wiener_info;
set_default_wiener(&ref_wiener_info);
rsi[plane].frame_restoration_type = RESTORE_WIENER;
for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) {
rsi[plane].restoration_type[tile_idx] = RESTORE_NONE;
}
// Construct a (WIENER_HALFWIN)-pixel border around the frame
#if CONFIG_HIGHBITDEPTH
if (cm->use_highbitdepth)
extend_frame_highbd(CONVERT_TO_SHORTPTR(dgd_buffer), width, height,
dgd_stride);
else
#endif
extend_frame(dgd_buffer, width, height, dgd_stride);
// Compute best Wiener filters for each tile
for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) {
av1_get_rest_tile_limits(tile_idx, 0, 0, nhtiles, nvtiles, tile_width,
tile_height, width, height, 0, 0, &h_start, &h_end,
&v_start, &v_end);
err = sse_restoration_tile(src, cm->frame_to_show, cm, h_start,
h_end - h_start, v_start, v_end - v_start,
(1 << plane));
// #bits when a tile is not restored
bits = av1_cost_bit(RESTORE_NONE_WIENER_PROB, 0);
cost_norestore = RDCOST_DBL(x->rdmult, (bits >> 4), err);
best_tile_cost[tile_idx] = DBL_MAX;
av1_get_rest_tile_limits(tile_idx, 0, 0, nhtiles, nvtiles, tile_width,
tile_height, width, height, 0, 0, &h_start, &h_end,
&v_start, &v_end);
#if CONFIG_HIGHBITDEPTH
if (cm->use_highbitdepth)
compute_stats_highbd(dgd_buffer, src_buffer, h_start, h_end, v_start,
v_end, dgd_stride, src_stride, M, H);
else
#endif // CONFIG_HIGHBITDEPTH
compute_stats(dgd_buffer, src_buffer, h_start, h_end, v_start, v_end,
dgd_stride, src_stride, M, H);
type[tile_idx] = RESTORE_WIENER;
if (!wiener_decompose_sep_sym(M, H, vfilterd, hfilterd)) {
type[tile_idx] = RESTORE_NONE;
continue;
}
quantize_sym_filter(vfilterd, rsi[plane].wiener_info[tile_idx].vfilter);
quantize_sym_filter(hfilterd, rsi[plane].wiener_info[tile_idx].hfilter);
// Filter score computes the value of the function x'*A*x - x'*b for the
// learned filter and compares it against identity filer. If there is no
// reduction in the function, the filter is reverted back to identity
score = compute_score(M, H, rsi[plane].wiener_info[tile_idx].vfilter,
rsi[plane].wiener_info[tile_idx].hfilter);
if (score > 0.0) {
type[tile_idx] = RESTORE_NONE;
continue;
}
aom_clear_system_state();
rsi[plane].restoration_type[tile_idx] = RESTORE_WIENER;
err = finer_tile_search_wiener(src, cpi, rsi, 4, plane, tile_idx,
partial_frame, dst_frame);
bits =
count_wiener_bits(&rsi[plane].wiener_info[tile_idx], &ref_wiener_info)
<< AV1_PROB_COST_SHIFT;
bits += av1_cost_bit(RESTORE_NONE_WIENER_PROB, 1);
cost_wiener = RDCOST_DBL(x->rdmult, (bits >> 4), err);
if (cost_wiener >= cost_norestore) {
type[tile_idx] = RESTORE_NONE;
} else {
type[tile_idx] = RESTORE_WIENER;
memcpy(&wiener_info[tile_idx], &rsi[plane].wiener_info[tile_idx],
sizeof(wiener_info[tile_idx]));
memcpy(&ref_wiener_info, &rsi[plane].wiener_info[tile_idx],
sizeof(ref_wiener_info));
best_tile_cost[tile_idx] = err;
}
rsi[plane].restoration_type[tile_idx] = RESTORE_NONE;
}
// Cost for Wiener filtering
set_default_wiener(&ref_wiener_info);
bits = frame_level_restore_bits[rsi[plane].frame_restoration_type]
<< AV1_PROB_COST_SHIFT;
for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) {
bits +=
av1_cost_bit(RESTORE_NONE_WIENER_PROB, type[tile_idx] != RESTORE_NONE);
memcpy(&rsi[plane].wiener_info[tile_idx], &wiener_info[tile_idx],
sizeof(wiener_info[tile_idx]));
if (type[tile_idx] == RESTORE_WIENER) {
bits +=
count_wiener_bits(&rsi[plane].wiener_info[tile_idx], &ref_wiener_info)
<< AV1_PROB_COST_SHIFT;
memcpy(&ref_wiener_info, &rsi[plane].wiener_info[tile_idx],
sizeof(ref_wiener_info));
}
rsi[plane].restoration_type[tile_idx] = type[tile_idx];
}
err = try_restoration_frame(src, cpi, rsi, 1 << plane, partial_frame,
dst_frame);
cost_wiener = RDCOST_DBL(x->rdmult, (bits >> 4), err);
return cost_wiener;
}
static double search_norestore(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi,
int partial_frame, int plane,
RestorationInfo *info, RestorationType *type,
double *best_tile_cost,
YV12_BUFFER_CONFIG *dst_frame) {
int64_t err;
double cost_norestore;
int bits;
MACROBLOCK *x = &cpi->td.mb;
AV1_COMMON *const cm = &cpi->common;
int tile_idx, tile_width, tile_height, nhtiles, nvtiles;
int h_start, h_end, v_start, v_end;
int width, height;
if (plane == AOM_PLANE_Y) {
width = src->y_crop_width;
height = src->y_crop_height;
} else {
width = src->uv_crop_width;
height = src->uv_crop_height;
}
const int ntiles = av1_get_rest_ntiles(
width, height, cm->rst_info[plane].restoration_tilesize, &tile_width,
&tile_height, &nhtiles, &nvtiles);
(void)info;
(void)dst_frame;
(void)partial_frame;
info->frame_restoration_type = RESTORE_NONE;
for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) {
av1_get_rest_tile_limits(tile_idx, 0, 0, nhtiles, nvtiles, tile_width,
tile_height, width, height, 0, 0, &h_start, &h_end,
&v_start, &v_end);
err = sse_restoration_tile(src, cm->frame_to_show, cm, h_start,
h_end - h_start, v_start, v_end - v_start,
1 << plane);
type[tile_idx] = RESTORE_NONE;
best_tile_cost[tile_idx] = err;
}
// RD cost associated with no restoration
err = sse_restoration_frame(cm, src, cm->frame_to_show, (1 << plane));
bits = frame_level_restore_bits[RESTORE_NONE] << AV1_PROB_COST_SHIFT;
cost_norestore = RDCOST_DBL(x->rdmult, (bits >> 4), err);
return cost_norestore;
}
static double search_switchable_restoration(
const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi, int partial_frame, int plane,
RestorationType *const restore_types[RESTORE_SWITCHABLE_TYPES],
double *const tile_cost[RESTORE_SWITCHABLE_TYPES], RestorationInfo *rsi) {
AV1_COMMON *const cm = &cpi->common;
MACROBLOCK *x = &cpi->td.mb;
double cost_switchable = 0;
int bits, tile_idx;
RestorationType r;
int width, height;
if (plane == AOM_PLANE_Y) {
width = src->y_crop_width;
height = src->y_crop_height;
} else {
width = src->uv_crop_width;
height = src->uv_crop_height;
}
const int ntiles = av1_get_rest_ntiles(
width, height, cm->rst_info[plane].restoration_tilesize, NULL, NULL, NULL,
NULL);
SgrprojInfo ref_sgrproj_info;
set_default_sgrproj(&ref_sgrproj_info);
WienerInfo ref_wiener_info;
set_default_wiener(&ref_wiener_info);
(void)partial_frame;
rsi->frame_restoration_type = RESTORE_SWITCHABLE;
bits = frame_level_restore_bits[rsi->frame_restoration_type]
<< AV1_PROB_COST_SHIFT;
cost_switchable = RDCOST_DBL(x->rdmult, bits >> 4, 0);
for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) {
double best_cost =
RDCOST_DBL(x->rdmult, (cpi->switchable_restore_cost[RESTORE_NONE] >> 4),
tile_cost[RESTORE_NONE][tile_idx]);
rsi->restoration_type[tile_idx] = RESTORE_NONE;
for (r = 1; r < RESTORE_SWITCHABLE_TYPES; r++) {
if (force_restore_type != 0)
if (r != force_restore_type) continue;
int tilebits = 0;
if (restore_types[r][tile_idx] != r) continue;
if (r == RESTORE_WIENER)
tilebits +=
count_wiener_bits(&rsi->wiener_info[tile_idx], &ref_wiener_info);
else if (r == RESTORE_SGRPROJ)
tilebits +=
count_sgrproj_bits(&rsi->sgrproj_info[tile_idx], &ref_sgrproj_info);
tilebits <<= AV1_PROB_COST_SHIFT;
tilebits += cpi->switchable_restore_cost[r];
double cost =
RDCOST_DBL(x->rdmult, tilebits >> 4, tile_cost[r][tile_idx]);
if (cost < best_cost) {
rsi->restoration_type[tile_idx] = r;
best_cost = cost;
}
}
if (rsi->restoration_type[tile_idx] == RESTORE_WIENER)
memcpy(&ref_wiener_info, &rsi->wiener_info[tile_idx],
sizeof(ref_wiener_info));
else if (rsi->restoration_type[tile_idx] == RESTORE_SGRPROJ)
memcpy(&ref_sgrproj_info, &rsi->sgrproj_info[tile_idx],
sizeof(ref_sgrproj_info));
if (force_restore_type != 0)
assert(rsi->restoration_type[tile_idx] == force_restore_type ||
rsi->restoration_type[tile_idx] == RESTORE_NONE);
cost_switchable += best_cost;
}
return cost_switchable;
}
void av1_pick_filter_restoration(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi,
LPF_PICK_METHOD method) {
static search_restore_type search_restore_fun[RESTORE_SWITCHABLE_TYPES] = {
search_norestore, search_wiener, search_sgrproj,
};
AV1_COMMON *const cm = &cpi->common;
double cost_restore[RESTORE_TYPES];
double *tile_cost[RESTORE_SWITCHABLE_TYPES];
RestorationType *restore_types[RESTORE_SWITCHABLE_TYPES];
double best_cost_restore;
RestorationType r, best_restore;
const int ywidth = src->y_crop_width;
const int yheight = src->y_crop_height;
const int uvwidth = src->uv_crop_width;
const int uvheight = src->uv_crop_height;
const int ntiles_y =
av1_get_rest_ntiles(ywidth, yheight, cm->rst_info[0].restoration_tilesize,
NULL, NULL, NULL, NULL);
const int ntiles_uv = av1_get_rest_ntiles(
uvwidth, uvheight, cm->rst_info[1].restoration_tilesize, NULL, NULL, NULL,
NULL);
// Assume ntiles_uv is never larger that ntiles_y and so the same arrays work.
for (r = 0; r < RESTORE_SWITCHABLE_TYPES; r++) {
tile_cost[r] = (double *)aom_malloc(sizeof(*tile_cost[0]) * ntiles_y);
restore_types[r] =
(RestorationType *)aom_malloc(sizeof(*restore_types[0]) * ntiles_y);
}
for (int plane = AOM_PLANE_Y; plane <= AOM_PLANE_V; ++plane) {
for (r = 0; r < RESTORE_SWITCHABLE_TYPES; ++r) {
cost_restore[r] = DBL_MAX;
if (force_restore_type != 0)
if (r != RESTORE_NONE && r != force_restore_type) continue;
cost_restore[r] =
search_restore_fun[r](src, cpi, method == LPF_PICK_FROM_SUBIMAGE,
plane, &cm->rst_info[plane], restore_types[r],
tile_cost[r], &cpi->trial_frame_rst);
}
if (plane == AOM_PLANE_Y)
cost_restore[RESTORE_SWITCHABLE] = search_switchable_restoration(
src, cpi, method == LPF_PICK_FROM_SUBIMAGE, plane, restore_types,
tile_cost, &cm->rst_info[plane]);
else
cost_restore[RESTORE_SWITCHABLE] = DBL_MAX;
best_cost_restore = DBL_MAX;
best_restore = 0;
for (r = 0; r < RESTORE_TYPES; ++r) {
if (force_restore_type != 0)
if (r != RESTORE_NONE && r != force_restore_type) continue;
if (cost_restore[r] < best_cost_restore) {
best_restore = r;
best_cost_restore = cost_restore[r];
}
}
cm->rst_info[plane].frame_restoration_type = best_restore;
if (force_restore_type != 0)
assert(best_restore == force_restore_type ||
best_restore == RESTORE_NONE);
if (best_restore != RESTORE_SWITCHABLE) {
const int nt = (plane == AOM_PLANE_Y ? ntiles_y : ntiles_uv);
memcpy(cm->rst_info[plane].restoration_type, restore_types[best_restore],
nt * sizeof(restore_types[best_restore][0]));
}
}
/*
printf("Frame %d/%d restore types: %d %d %d\n", cm->current_video_frame,
cm->show_frame, cm->rst_info[0].frame_restoration_type,
cm->rst_info[1].frame_restoration_type,
cm->rst_info[2].frame_restoration_type);
printf("Frame %d/%d frame_restore_type %d : %f %f %f %f\n",
cm->current_video_frame, cm->show_frame,
cm->rst_info[0].frame_restoration_type, cost_restore[0],
cost_restore[1], cost_restore[2], cost_restore[3]);
*/
for (r = 0; r < RESTORE_SWITCHABLE_TYPES; r++) {
aom_free(tile_cost[r]);
aom_free(restore_types[r]);
}
}
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