| /* |
| * 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/psnr.h" |
| #include "aom_dsp/aom_dsp_common.h" |
| #include "aom_mem/aom_mem.h" |
| #include "aom_ports/mem.h" |
| |
| #include "av1/common/onyxc_int.h" |
| #include "av1/common/quant_common.h" |
| #include "av1/common/restoration.h" |
| |
| #include "av1/encoder/encoder.h" |
| #include "av1/encoder/picklpf.h" |
| #include "av1/encoder/pickrst.h" |
| #include "av1/encoder/quantize.h" |
| |
| typedef double (*search_restore_type)(const YV12_BUFFER_CONFIG *src, |
| AV1_COMP *cpi, int filter_level, |
| int partial_frame, RestorationInfo *info, |
| RestorationType *rest_level, |
| double *best_tile_cost, |
| YV12_BUFFER_CONFIG *dst_frame); |
| |
| const int frame_level_restore_bits[RESTORE_TYPES] = { 2, 2, 3, 3, 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_AOM_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_AOM_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_AOM_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_AOM_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, &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 int64_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 int64_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; |
| } |
| |
| 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; |
| |
| xq[0] = -(1 << SGRPROJ_PRJ_BITS) / 4; |
| xq[1] = (1 << SGRPROJ_PRJ_BITS) - xq[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 i, j, 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 (bit_depth > 8) { |
| uint16_t *dat = CONVERT_TO_SHORTPTR(dat8); |
| for (i = 0; i < height; ++i) { |
| for (j = 0; j < width; ++j) { |
| flt1[i * width + j] = (int32_t)dat[i * dat_stride + j]; |
| flt2[i * width + j] = (int32_t)dat[i * dat_stride + j]; |
| } |
| } |
| } else { |
| uint8_t *dat = dat8; |
| for (i = 0; i < height; ++i) { |
| for (j = 0; j < width; ++j) { |
| const int k = i * width + j; |
| const int l = i * dat_stride + j; |
| flt1[k] = (int32_t)dat[l]; |
| flt2[k] = (int32_t)dat[l]; |
| } |
| } |
| } |
| av1_selfguided_restoration(flt1, width, height, width, bit_depth, |
| sgr_params[ep].r1, sgr_params[ep].e1, tmpbuf2); |
| av1_selfguided_restoration(flt2, width, height, width, bit_depth, |
| sgr_params[ep].r2, sgr_params[ep].e2, tmpbuf2); |
| get_proj_subspace(src8, width, height, src_stride, dat8, dat_stride, |
| bit_depth, flt1, width, flt2, width, exq); |
| encode_xq(exq, exqd); |
| err = |
| get_pixel_proj_error(src8, width, height, src_stride, dat8, dat_stride, |
| bit_depth, flt1, width, flt2, width, 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 double search_sgrproj(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi, |
| int filter_level, int partial_frame, |
| 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; |
| // Allocate for the src buffer at high precision |
| const int ntiles = av1_get_rest_ntiles(cm->width, cm->height, &tile_width, |
| &tile_height, &nhtiles, &nvtiles); |
| // Make a copy of the unfiltered / processed recon buffer |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_uf); |
| av1_loop_filter_frame(cm->frame_to_show, cm, &cpi->td.mb.e_mbd, filter_level, |
| 1, partial_frame); |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_db); |
| |
| rsi->frame_restoration_type = RESTORE_SGRPROJ; |
| |
| for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) { |
| rsi->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, cm->width, cm->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); |
| // #bits when a tile is not restored |
| bits = av1_cost_bit(RESTORE_NONE_SGRPROJ_PROB, 0); |
| cost_norestore = RDCOST_DBL(x->rdmult, x->rddiv, (bits >> 4), err); |
| best_tile_cost[tile_idx] = DBL_MAX; |
| search_selfguided_restoration( |
| dgd->y_buffer + v_start * dgd->y_stride + h_start, h_end - h_start, |
| v_end - v_start, dgd->y_stride, |
| src->y_buffer + v_start * src->y_stride + h_start, src->y_stride, |
| #if CONFIG_AOM_HIGHBITDEPTH |
| cm->bit_depth, |
| #else |
| 8, |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| &rsi->sgrproj_info[tile_idx].ep, rsi->sgrproj_info[tile_idx].xqd, |
| cm->rst_internal.tmpbuf); |
| rsi->restoration_type[tile_idx] = RESTORE_SGRPROJ; |
| err = try_restoration_tile(src, cpi, rsi, 1, partial_frame, tile_idx, 0, 0, |
| dst_frame); |
| bits = SGRPROJ_BITS << AV1_PROB_COST_SHIFT; |
| bits += av1_cost_bit(RESTORE_NONE_SGRPROJ_PROB, 1); |
| cost_sgrproj = RDCOST_DBL(x->rdmult, x->rddiv, (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->sgrproj_info[tile_idx], |
| sizeof(sgrproj_info[tile_idx])); |
| bits = SGRPROJ_BITS << AV1_PROB_COST_SHIFT; |
| best_tile_cost[tile_idx] = RDCOST_DBL( |
| x->rdmult, x->rddiv, |
| (bits + cpi->switchable_restore_cost[RESTORE_SGRPROJ]) >> 4, err); |
| } |
| rsi->restoration_type[tile_idx] = RESTORE_NONE; |
| } |
| // Cost for Sgrproj filtering |
| bits = frame_level_restore_bits[rsi->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->sgrproj_info[tile_idx], &sgrproj_info[tile_idx], |
| sizeof(sgrproj_info[tile_idx])); |
| if (type[tile_idx] == RESTORE_SGRPROJ) { |
| bits += (SGRPROJ_BITS << AV1_PROB_COST_SHIFT); |
| } |
| rsi->restoration_type[tile_idx] = type[tile_idx]; |
| } |
| err = try_restoration_frame(src, cpi, rsi, 1, partial_frame, dst_frame); |
| cost_sgrproj = RDCOST_DBL(x->rdmult, x->rddiv, (bits >> 4), err); |
| |
| aom_yv12_copy_y(&cpi->last_frame_uf, cm->frame_to_show); |
| return cost_sgrproj; |
| } |
| |
| static int64_t compute_sse(uint8_t *dgd, int width, int height, int dgd_stride, |
| uint8_t *src, int src_stride) { |
| int64_t sse = 0; |
| int i, j; |
| for (i = 0; i < height; ++i) { |
| for (j = 0; j < width; ++j) { |
| const int diff = |
| (int)dgd[i * dgd_stride + j] - (int)src[i * src_stride + j]; |
| sse += diff * diff; |
| } |
| } |
| return sse; |
| } |
| |
| #if CONFIG_AOM_HIGHBITDEPTH |
| static int64_t compute_sse_highbd(uint16_t *dgd, int width, int height, |
| int dgd_stride, uint16_t *src, |
| int src_stride) { |
| int64_t sse = 0; |
| int i, j; |
| for (i = 0; i < height; ++i) { |
| for (j = 0; j < width; ++j) { |
| const int diff = |
| (int)dgd[i * dgd_stride + j] - (int)src[i * src_stride + j]; |
| sse += diff * diff; |
| } |
| } |
| return sse; |
| } |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| |
| static void search_domaintxfmrf_restoration(uint8_t *dgd8, int width, |
| int height, int dgd_stride, |
| uint8_t *src8, int src_stride, |
| int bit_depth, int *sigma_r, |
| uint8_t *fltbuf, int32_t *tmpbuf) { |
| const int first_p_step = 8; |
| const int second_p_range = first_p_step >> 1; |
| const int second_p_step = 2; |
| const int third_p_range = second_p_step >> 1; |
| const int third_p_step = 1; |
| int p, best_p0, best_p = -1; |
| int64_t best_sse = INT64_MAX, sse; |
| if (bit_depth == 8) { |
| uint8_t *flt = fltbuf; |
| uint8_t *dgd = dgd8; |
| uint8_t *src = src8; |
| // First phase |
| for (p = first_p_step / 2; p < DOMAINTXFMRF_PARAMS; p += first_p_step) { |
| av1_domaintxfmrf_restoration(dgd, width, height, dgd_stride, p, flt, |
| width, tmpbuf); |
| sse = compute_sse(flt, width, height, width, src, src_stride); |
| if (sse < best_sse || best_p == -1) { |
| best_p = p; |
| best_sse = sse; |
| } |
| } |
| // Second Phase |
| best_p0 = best_p; |
| for (p = best_p0 - second_p_range; p <= best_p0 + second_p_range; |
| p += second_p_step) { |
| if (p < 0 || p == best_p || p >= DOMAINTXFMRF_PARAMS) continue; |
| av1_domaintxfmrf_restoration(dgd, width, height, dgd_stride, p, flt, |
| width, tmpbuf); |
| sse = compute_sse(flt, width, height, width, src, src_stride); |
| if (sse < best_sse) { |
| best_p = p; |
| best_sse = sse; |
| } |
| } |
| // Third Phase |
| best_p0 = best_p; |
| for (p = best_p0 - third_p_range; p <= best_p0 + third_p_range; |
| p += third_p_step) { |
| if (p < 0 || p == best_p || p >= DOMAINTXFMRF_PARAMS) continue; |
| av1_domaintxfmrf_restoration(dgd, width, height, dgd_stride, p, flt, |
| width, tmpbuf); |
| sse = compute_sse(flt, width, height, width, src, src_stride); |
| if (sse < best_sse) { |
| best_p = p; |
| best_sse = sse; |
| } |
| } |
| } else { |
| #if CONFIG_AOM_HIGHBITDEPTH |
| uint16_t *flt = (uint16_t *)fltbuf; |
| uint16_t *dgd = CONVERT_TO_SHORTPTR(dgd8); |
| uint16_t *src = CONVERT_TO_SHORTPTR(src8); |
| // First phase |
| for (p = first_p_step / 2; p < DOMAINTXFMRF_PARAMS; p += first_p_step) { |
| av1_domaintxfmrf_restoration_highbd(dgd, width, height, dgd_stride, p, |
| bit_depth, flt, width, tmpbuf); |
| sse = compute_sse_highbd(flt, width, height, width, src, src_stride); |
| if (sse < best_sse || best_p == -1) { |
| best_p = p; |
| best_sse = sse; |
| } |
| } |
| // Second Phase |
| best_p0 = best_p; |
| for (p = best_p0 - second_p_range; p <= best_p0 + second_p_range; |
| p += second_p_step) { |
| if (p < 0 || p == best_p || p >= DOMAINTXFMRF_PARAMS) continue; |
| av1_domaintxfmrf_restoration_highbd(dgd, width, height, dgd_stride, p, |
| bit_depth, flt, width, tmpbuf); |
| sse = compute_sse_highbd(flt, width, height, width, src, src_stride); |
| if (sse < best_sse) { |
| best_p = p; |
| best_sse = sse; |
| } |
| } |
| // Third Phase |
| best_p0 = best_p; |
| for (p = best_p0 - third_p_range; p <= best_p0 + third_p_range; |
| p += third_p_step) { |
| if (p < 0 || p == best_p || p >= DOMAINTXFMRF_PARAMS) continue; |
| av1_domaintxfmrf_restoration_highbd(dgd, width, height, dgd_stride, p, |
| bit_depth, flt, width, tmpbuf); |
| sse = compute_sse_highbd(flt, width, height, width, src, src_stride); |
| if (sse < best_sse) { |
| best_p = p; |
| best_sse = sse; |
| } |
| } |
| #else |
| assert(0); |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| } |
| *sigma_r = best_p; |
| } |
| |
| static double search_domaintxfmrf(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi, |
| int filter_level, int partial_frame, |
| RestorationInfo *info, RestorationType *type, |
| double *best_tile_cost, |
| YV12_BUFFER_CONFIG *dst_frame) { |
| DomaintxfmrfInfo *domaintxfmrf_info = info->domaintxfmrf_info; |
| double cost_norestore, cost_domaintxfmrf; |
| int64_t err; |
| 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; |
| const int ntiles = av1_get_rest_ntiles(cm->width, cm->height, &tile_width, |
| &tile_height, &nhtiles, &nvtiles); |
| // Make a copy of the unfiltered / processed recon buffer |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_uf); |
| av1_loop_filter_frame(cm->frame_to_show, cm, &cpi->td.mb.e_mbd, filter_level, |
| 1, partial_frame); |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_db); |
| |
| rsi->frame_restoration_type = RESTORE_DOMAINTXFMRF; |
| |
| for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) { |
| rsi->restoration_type[tile_idx] = RESTORE_NONE; |
| } |
| // Compute best Domaintxfm 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, cm->width, cm->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); |
| // #bits when a tile is not restored |
| bits = av1_cost_bit(RESTORE_NONE_DOMAINTXFMRF_PROB, 0); |
| cost_norestore = RDCOST_DBL(x->rdmult, x->rddiv, (bits >> 4), err); |
| best_tile_cost[tile_idx] = DBL_MAX; |
| |
| search_domaintxfmrf_restoration( |
| dgd->y_buffer + v_start * dgd->y_stride + h_start, h_end - h_start, |
| v_end - v_start, dgd->y_stride, |
| src->y_buffer + v_start * src->y_stride + h_start, src->y_stride, |
| #if CONFIG_AOM_HIGHBITDEPTH |
| cm->bit_depth, |
| #else |
| 8, |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| &rsi->domaintxfmrf_info[tile_idx].sigma_r, cpi->extra_rstbuf, |
| cm->rst_internal.tmpbuf); |
| |
| rsi->restoration_type[tile_idx] = RESTORE_DOMAINTXFMRF; |
| err = try_restoration_tile(src, cpi, rsi, 1, partial_frame, tile_idx, 0, 0, |
| dst_frame); |
| bits = DOMAINTXFMRF_PARAMS_BITS << AV1_PROB_COST_SHIFT; |
| bits += av1_cost_bit(RESTORE_NONE_DOMAINTXFMRF_PROB, 1); |
| cost_domaintxfmrf = RDCOST_DBL(x->rdmult, x->rddiv, (bits >> 4), err); |
| if (cost_domaintxfmrf >= cost_norestore) { |
| type[tile_idx] = RESTORE_NONE; |
| } else { |
| type[tile_idx] = RESTORE_DOMAINTXFMRF; |
| memcpy(&domaintxfmrf_info[tile_idx], &rsi->domaintxfmrf_info[tile_idx], |
| sizeof(domaintxfmrf_info[tile_idx])); |
| bits = DOMAINTXFMRF_PARAMS_BITS << AV1_PROB_COST_SHIFT; |
| best_tile_cost[tile_idx] = RDCOST_DBL( |
| x->rdmult, x->rddiv, |
| (bits + cpi->switchable_restore_cost[RESTORE_DOMAINTXFMRF]) >> 4, |
| err); |
| } |
| rsi->restoration_type[tile_idx] = RESTORE_NONE; |
| } |
| // Cost for Domaintxfmrf filtering |
| bits = frame_level_restore_bits[rsi->frame_restoration_type] |
| << AV1_PROB_COST_SHIFT; |
| for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) { |
| bits += av1_cost_bit(RESTORE_NONE_DOMAINTXFMRF_PROB, |
| type[tile_idx] != RESTORE_NONE); |
| memcpy(&rsi->domaintxfmrf_info[tile_idx], &domaintxfmrf_info[tile_idx], |
| sizeof(domaintxfmrf_info[tile_idx])); |
| if (type[tile_idx] == RESTORE_DOMAINTXFMRF) { |
| bits += (DOMAINTXFMRF_PARAMS_BITS << AV1_PROB_COST_SHIFT); |
| } |
| rsi->restoration_type[tile_idx] = type[tile_idx]; |
| } |
| err = try_restoration_frame(src, cpi, rsi, 1, partial_frame, dst_frame); |
| cost_domaintxfmrf = RDCOST_DBL(x->rdmult, x->rddiv, (bits >> 4), err); |
| |
| aom_yv12_copy_y(&cpi->last_frame_uf, cm->frame_to_show); |
| return cost_domaintxfmrf; |
| } |
| |
| 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; |
| 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_AOM_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; |
| 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_AOM_HIGHBITDEPTH |
| |
| // Solves Ax = b, where x and b are column vectors |
| static int linsolve(int n, double *A, int stride, double *b, double *x) { |
| int i, j, k; |
| double c; |
| // Partial pivoting |
| for (i = n - 1; i > 0; i--) { |
| if (A[(i - 1) * stride] < A[i * stride]) { |
| for (j = 0; j < n; j++) { |
| c = A[i * stride + j]; |
| A[i * stride + j] = A[(i - 1) * stride + j]; |
| A[(i - 1) * stride + j] = c; |
| } |
| c = b[i]; |
| b[i] = b[i - 1]; |
| b[i - 1] = c; |
| } |
| } |
| // Forward elimination |
| for (k = 0; k < n - 1; k++) { |
| for (i = k; i < n - 1; i++) { |
| c = A[(i + 1) * stride + k] / A[k * stride + k]; |
| for (j = 0; j < n; j++) A[(i + 1) * stride + j] -= c * A[k * stride + j]; |
| b[i + 1] -= c * b[k]; |
| } |
| } |
| // Backward substitution |
| for (i = n - 1; i >= 0; i--) { |
| if (fabs(A[i * stride + i]) < 1e-10) return 0; |
| c = 0; |
| for (j = i + 1; j <= n - 1; j++) c += A[i * stride + j] * x[j]; |
| x[i] = (b[i] - c) / A[i * stride + i]; |
| } |
| return 1; |
| } |
| |
| 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_WIN], B[WIENER_WIN2]; |
| 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_WIN], B[WIENER_WIN2]; |
| 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 double init_filt[WIENER_WIN] = { |
| 0.035623, -0.127154, 0.211436, 0.760190, 0.211436, -0.127154, 0.035623, |
| }; |
| 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; |
| } |
| } |
| memcpy(a, init_filt, sizeof(*a) * WIENER_WIN); |
| memcpy(b, init_filt, sizeof(*b) * WIENER_WIN); |
| |
| iter = 1; |
| while (iter < 10) { |
| 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]; |
| 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 double search_wiener_uv(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi, |
| int filter_level, int partial_frame, int plane, |
| RestorationInfo *info, RestorationType *type, |
| 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, cost_wiener_frame, cost_norestore_frame; |
| 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; |
| const int width = src->uv_crop_width; |
| const int height = src->uv_crop_height; |
| const int src_stride = src->uv_stride; |
| const int dgd_stride = dgd->uv_stride; |
| 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, &tile_width, |
| &tile_height, &nhtiles, &nvtiles); |
| assert(width == dgd->uv_crop_width); |
| assert(height == dgd->uv_crop_height); |
| |
| // Make a copy of the unfiltered / processed recon buffer |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_uf); |
| aom_yv12_copy_u(cm->frame_to_show, &cpi->last_frame_uf); |
| aom_yv12_copy_v(cm->frame_to_show, &cpi->last_frame_uf); |
| av1_loop_filter_frame(cm->frame_to_show, cm, &cpi->td.mb.e_mbd, filter_level, |
| 0, partial_frame); |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_db); |
| aom_yv12_copy_u(cm->frame_to_show, &cpi->last_frame_db); |
| aom_yv12_copy_v(cm->frame_to_show, &cpi->last_frame_db); |
| |
| rsi[plane].frame_restoration_type = RESTORE_NONE; |
| err = sse_restoration_frame(cm, src, cm->frame_to_show, (1 << plane)); |
| bits = 0; |
| cost_norestore_frame = RDCOST_DBL(x->rdmult, x->rddiv, (bits >> 4), err); |
| |
| rsi[plane].frame_restoration_type = RESTORE_WIENER; |
| |
| for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) { |
| rsi[plane].restoration_type[tile_idx] = RESTORE_NONE; |
| } |
| |
| // 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, x->rddiv, (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, WIENER_HALFWIN, |
| WIENER_HALFWIN, &h_start, &h_end, &v_start, |
| &v_end); |
| if (plane == AOM_PLANE_U) { |
| #if CONFIG_AOM_HIGHBITDEPTH |
| if (cm->use_highbitdepth) |
| compute_stats_highbd(dgd->u_buffer, src->u_buffer, h_start, h_end, |
| v_start, v_end, dgd_stride, src_stride, M, H); |
| else |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| compute_stats(dgd->u_buffer, src->u_buffer, h_start, h_end, v_start, |
| v_end, dgd_stride, src_stride, M, H); |
| } else if (plane == AOM_PLANE_V) { |
| #if CONFIG_AOM_HIGHBITDEPTH |
| if (cm->use_highbitdepth) |
| compute_stats_highbd(dgd->v_buffer, src->v_buffer, h_start, h_end, |
| v_start, v_end, dgd_stride, src_stride, M, H); |
| else |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| compute_stats(dgd->v_buffer, src->v_buffer, h_start, h_end, v_start, |
| v_end, dgd_stride, src_stride, M, H); |
| } else { |
| assert(0); |
| } |
| |
| 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; |
| } |
| |
| rsi[plane].restoration_type[tile_idx] = RESTORE_WIENER; |
| err = try_restoration_tile(src, cpi, rsi, 1 << plane, partial_frame, |
| tile_idx, 0, 0, dst_frame); |
| bits = WIENER_FILT_BITS << AV1_PROB_COST_SHIFT; |
| bits += av1_cost_bit(RESTORE_NONE_WIENER_PROB, 1); |
| cost_wiener = RDCOST_DBL(x->rdmult, x->rddiv, (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])); |
| } |
| rsi[plane].restoration_type[tile_idx] = RESTORE_NONE; |
| } |
| aom_yv12_copy_frame(&cpi->last_frame_db, cm->frame_to_show); |
| // Cost for Wiener filtering |
| bits = 0; |
| 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 += (WIENER_FILT_BITS << AV1_PROB_COST_SHIFT); |
| } |
| rsi[plane].restoration_type[tile_idx] = type[tile_idx]; |
| } |
| err = try_restoration_frame(src, cpi, rsi, 1 << plane, partial_frame, |
| dst_frame); |
| cost_wiener_frame = RDCOST_DBL(x->rdmult, x->rddiv, (bits >> 4), err); |
| |
| if (cost_wiener_frame < cost_norestore_frame) { |
| info->frame_restoration_type = RESTORE_WIENER; |
| } else { |
| info->frame_restoration_type = RESTORE_NONE; |
| } |
| |
| aom_yv12_copy_y(&cpi->last_frame_uf, cm->frame_to_show); |
| aom_yv12_copy_u(&cpi->last_frame_uf, cm->frame_to_show); |
| aom_yv12_copy_v(&cpi->last_frame_uf, cm->frame_to_show); |
| return info->frame_restoration_type == RESTORE_WIENER ? cost_wiener_frame |
| : cost_norestore_frame; |
| } |
| |
| static double search_wiener(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi, |
| int filter_level, int partial_frame, |
| 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; |
| const int width = cm->width; |
| const int height = cm->height; |
| const int src_stride = src->y_stride; |
| const int dgd_stride = dgd->y_stride; |
| 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, &tile_width, |
| &tile_height, &nhtiles, &nvtiles); |
| assert(width == dgd->y_crop_width); |
| assert(height == dgd->y_crop_height); |
| assert(width == src->y_crop_width); |
| assert(height == src->y_crop_height); |
| |
| // Make a copy of the unfiltered / processed recon buffer |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_uf); |
| av1_loop_filter_frame(cm->frame_to_show, cm, &cpi->td.mb.e_mbd, filter_level, |
| 1, partial_frame); |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_db); |
| |
| rsi->frame_restoration_type = RESTORE_WIENER; |
| |
| for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) { |
| rsi->restoration_type[tile_idx] = RESTORE_NONE; |
| } |
| |
| // Construct a (WIENER_HALFWIN)-pixel border around the frame |
| #if CONFIG_AOM_HIGHBITDEPTH |
| if (cm->use_highbitdepth) |
| extend_frame_highbd(CONVERT_TO_SHORTPTR(dgd->y_buffer), width, height, |
| dgd_stride); |
| else |
| #endif |
| extend_frame(dgd->y_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); |
| // #bits when a tile is not restored |
| bits = av1_cost_bit(RESTORE_NONE_WIENER_PROB, 0); |
| cost_norestore = RDCOST_DBL(x->rdmult, x->rddiv, (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_AOM_HIGHBITDEPTH |
| if (cm->use_highbitdepth) |
| compute_stats_highbd(dgd->y_buffer, src->y_buffer, h_start, h_end, |
| v_start, v_end, dgd_stride, src_stride, M, H); |
| else |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| compute_stats(dgd->y_buffer, src->y_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->wiener_info[tile_idx].vfilter); |
| quantize_sym_filter(hfilterd, rsi->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->wiener_info[tile_idx].vfilter, |
| rsi->wiener_info[tile_idx].hfilter); |
| if (score > 0.0) { |
| type[tile_idx] = RESTORE_NONE; |
| continue; |
| } |
| |
| rsi->restoration_type[tile_idx] = RESTORE_WIENER; |
| err = try_restoration_tile(src, cpi, rsi, 1, partial_frame, tile_idx, 0, 0, |
| dst_frame); |
| bits = WIENER_FILT_BITS << AV1_PROB_COST_SHIFT; |
| bits += av1_cost_bit(RESTORE_NONE_WIENER_PROB, 1); |
| cost_wiener = RDCOST_DBL(x->rdmult, x->rddiv, (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->wiener_info[tile_idx], |
| sizeof(wiener_info[tile_idx])); |
| bits = WIENER_FILT_BITS << AV1_PROB_COST_SHIFT; |
| best_tile_cost[tile_idx] = RDCOST_DBL( |
| x->rdmult, x->rddiv, |
| (bits + cpi->switchable_restore_cost[RESTORE_WIENER]) >> 4, err); |
| } |
| rsi->restoration_type[tile_idx] = RESTORE_NONE; |
| } |
| // Cost for Wiener filtering |
| bits = frame_level_restore_bits[rsi->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->wiener_info[tile_idx], &wiener_info[tile_idx], |
| sizeof(wiener_info[tile_idx])); |
| if (type[tile_idx] == RESTORE_WIENER) { |
| bits += (WIENER_FILT_BITS << AV1_PROB_COST_SHIFT); |
| } |
| rsi->restoration_type[tile_idx] = type[tile_idx]; |
| } |
| err = try_restoration_frame(src, cpi, rsi, 1, partial_frame, dst_frame); |
| cost_wiener = RDCOST_DBL(x->rdmult, x->rddiv, (bits >> 4), err); |
| |
| aom_yv12_copy_y(&cpi->last_frame_uf, cm->frame_to_show); |
| return cost_wiener; |
| } |
| |
| static double search_norestore(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi, |
| int filter_level, int partial_frame, |
| RestorationInfo *info, RestorationType *type, |
| double *best_tile_cost, |
| YV12_BUFFER_CONFIG *dst_frame) { |
| double err, 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; |
| const int ntiles = av1_get_rest_ntiles(cm->width, cm->height, &tile_width, |
| &tile_height, &nhtiles, &nvtiles); |
| (void)info; |
| (void)dst_frame; |
| |
| // Make a copy of the unfiltered / processed recon buffer |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_uf); |
| av1_loop_filter_frame(cm->frame_to_show, cm, &cpi->td.mb.e_mbd, filter_level, |
| 1, partial_frame); |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_db); |
| |
| for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) { |
| av1_get_rest_tile_limits(tile_idx, 0, 0, nhtiles, nvtiles, tile_width, |
| tile_height, cm->width, cm->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); |
| best_tile_cost[tile_idx] = |
| RDCOST_DBL(x->rdmult, x->rddiv, |
| (cpi->switchable_restore_cost[RESTORE_NONE] >> 4), err); |
| type[tile_idx] = RESTORE_NONE; |
| } |
| // RD cost associated with no restoration |
| err = sse_restoration_tile(src, cm->frame_to_show, cm, 0, cm->width, 0, |
| cm->height, 1); |
| bits = frame_level_restore_bits[RESTORE_NONE] << AV1_PROB_COST_SHIFT; |
| cost_norestore = RDCOST_DBL(x->rdmult, x->rddiv, (bits >> 4), err); |
| aom_yv12_copy_y(&cpi->last_frame_uf, cm->frame_to_show); |
| return cost_norestore; |
| } |
| |
| static double search_switchable_restoration( |
| AV1_COMP *cpi, int filter_level, int partial_frame, RestorationInfo *rsi, |
| double *tile_cost[RESTORE_SWITCHABLE_TYPES]) { |
| AV1_COMMON *const cm = &cpi->common; |
| MACROBLOCK *x = &cpi->td.mb; |
| double cost_switchable = 0; |
| int r, bits, tile_idx; |
| const int ntiles = |
| av1_get_rest_ntiles(cm->width, cm->height, NULL, NULL, NULL, NULL); |
| |
| // Make a copy of the unfiltered / processed recon buffer |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_uf); |
| av1_loop_filter_frame(cm->frame_to_show, cm, &cpi->td.mb.e_mbd, filter_level, |
| 1, partial_frame); |
| aom_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_db); |
| |
| 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, x->rddiv, bits >> 4, 0); |
| for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) { |
| double best_cost = tile_cost[RESTORE_NONE][tile_idx]; |
| rsi->restoration_type[tile_idx] = RESTORE_NONE; |
| for (r = 1; r < RESTORE_SWITCHABLE_TYPES; r++) { |
| if (tile_cost[r][tile_idx] < best_cost) { |
| rsi->restoration_type[tile_idx] = r; |
| best_cost = tile_cost[r][tile_idx]; |
| } |
| } |
| cost_switchable += best_cost; |
| } |
| aom_yv12_copy_y(&cpi->last_frame_uf, cm->frame_to_show); |
| 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, search_domaintxfmrf, |
| }; |
| AV1_COMMON *const cm = &cpi->common; |
| struct loopfilter *const lf = &cm->lf; |
| 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 ntiles = |
| av1_get_rest_ntiles(cm->width, cm->height, NULL, NULL, NULL, NULL); |
| |
| for (r = 0; r < RESTORE_SWITCHABLE_TYPES; r++) { |
| tile_cost[r] = (double *)aom_malloc(sizeof(*tile_cost[0]) * ntiles); |
| restore_types[r] = |
| (RestorationType *)aom_malloc(sizeof(*restore_types[0]) * ntiles); |
| } |
| |
| lf->sharpness_level = cm->frame_type == KEY_FRAME ? 0 : cpi->oxcf.sharpness; |
| |
| if (method == LPF_PICK_MINIMAL_LPF && lf->filter_level) { |
| lf->filter_level = 0; |
| cm->rst_info[0].frame_restoration_type = RESTORE_NONE; |
| } else if (method >= LPF_PICK_FROM_Q) { |
| const int min_filter_level = 0; |
| const int max_filter_level = av1_get_max_filter_level(cpi); |
| const int q = av1_ac_quant(cm->base_qindex, 0, cm->bit_depth); |
| // These values were determined by linear fitting the result of the |
| // searched level, filt_guess = q * 0.316206 + 3.87252 |
| #if CONFIG_AOM_HIGHBITDEPTH |
| int filt_guess; |
| switch (cm->bit_depth) { |
| case AOM_BITS_8: |
| filt_guess = ROUND_POWER_OF_TWO(q * 20723 + 1015158, 18); |
| break; |
| case AOM_BITS_10: |
| filt_guess = ROUND_POWER_OF_TWO(q * 20723 + 4060632, 20); |
| break; |
| case AOM_BITS_12: |
| filt_guess = ROUND_POWER_OF_TWO(q * 20723 + 16242526, 22); |
| break; |
| default: |
| assert(0 && |
| "bit_depth should be AOM_BITS_8, AOM_BITS_10 " |
| "or AOM_BITS_12"); |
| return; |
| } |
| #else |
| int filt_guess = ROUND_POWER_OF_TWO(q * 20723 + 1015158, 18); |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| if (cm->frame_type == KEY_FRAME) filt_guess -= 4; |
| lf->filter_level = clamp(filt_guess, min_filter_level, max_filter_level); |
| } else { |
| lf->filter_level = |
| av1_search_filter_level(src, cpi, method == LPF_PICK_FROM_SUBIMAGE, |
| &cost_restore[RESTORE_NONE]); |
| } |
| for (r = 0; r < RESTORE_SWITCHABLE_TYPES; ++r) { |
| cost_restore[r] = search_restore_fun[r]( |
| src, cpi, lf->filter_level, method == LPF_PICK_FROM_SUBIMAGE, |
| &cm->rst_info[0], restore_types[r], tile_cost[r], |
| &cpi->trial_frame_rst); |
| } |
| cost_restore[RESTORE_SWITCHABLE] = search_switchable_restoration( |
| cpi, lf->filter_level, method == LPF_PICK_FROM_SUBIMAGE, &cm->rst_info[0], |
| tile_cost); |
| |
| best_cost_restore = DBL_MAX; |
| best_restore = 0; |
| for (r = 0; r < RESTORE_TYPES; ++r) { |
| if (cost_restore[r] < best_cost_restore) { |
| best_restore = r; |
| best_cost_restore = cost_restore[r]; |
| } |
| } |
| cm->rst_info[0].frame_restoration_type = best_restore; |
| if (best_restore != RESTORE_SWITCHABLE) { |
| memcpy(cm->rst_info[0].restoration_type, restore_types[best_restore], |
| ntiles * sizeof(restore_types[best_restore][0])); |
| } |
| |
| // Color components |
| search_wiener_uv(src, cpi, lf->filter_level, method == LPF_PICK_FROM_SUBIMAGE, |
| AOM_PLANE_U, &cm->rst_info[AOM_PLANE_U], |
| cm->rst_info[AOM_PLANE_U].restoration_type, |
| &cpi->trial_frame_rst); |
| search_wiener_uv(src, cpi, lf->filter_level, method == LPF_PICK_FROM_SUBIMAGE, |
| AOM_PLANE_V, &cm->rst_info[AOM_PLANE_V], |
| cm->rst_info[AOM_PLANE_V].restoration_type, |
| &cpi->trial_frame_rst); |
| /* |
| 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 %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], cost_restore[4]); |
| */ |
| |
| for (r = 0; r < RESTORE_SWITCHABLE_TYPES; r++) { |
| aom_free(tile_cost[r]); |
| aom_free(restore_types[r]); |
| } |
| } |
