| /* |
| * 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/mathutils.h" |
| #include "av1/encoder/picklpf.h" |
| #include "av1/encoder/pickrst.h" |
| |
| // When set to RESTORE_WIENER or RESTORE_SGRPROJ only those are allowed. |
| // When set to RESTORE_TYPES we allow switchable. |
| static const RestorationType force_restore_type = RESTORE_TYPES; |
| |
| // Number of Wiener iterations |
| #define NUM_WIENER_ITERS 5 |
| |
| typedef double (*search_restore_type)(const YV12_BUFFER_CONFIG *src, |
| AV1_COMP *cpi, int plane, |
| RestorationInfo *info, |
| RestorationType *rest_level, |
| int64_t *best_tile_cost, |
| YV12_BUFFER_CONFIG *dst_frame); |
| |
| const int frame_level_restore_bits[RESTORE_TYPES] = { 2, 2, 2, 2 }; |
| |
| typedef int64_t (*sse_extractor_type)(const YV12_BUFFER_CONFIG *a, |
| const YV12_BUFFER_CONFIG *b); |
| typedef int64_t (*sse_part_extractor_type)(const YV12_BUFFER_CONFIG *a, |
| const YV12_BUFFER_CONFIG *b, |
| int hstart, int width, int vstart, |
| int height); |
| |
| #define NUM_EXTRACTORS (3 * (1 + CONFIG_HIGHBITDEPTH)) |
| |
| static const sse_part_extractor_type sse_part_extractors[NUM_EXTRACTORS] = { |
| aom_get_y_sse_part, aom_get_u_sse_part, |
| aom_get_v_sse_part, |
| #if CONFIG_HIGHBITDEPTH |
| aom_highbd_get_y_sse_part, aom_highbd_get_u_sse_part, |
| aom_highbd_get_v_sse_part, |
| #endif // CONFIG_HIGHBITDEPTH |
| }; |
| |
| static const sse_extractor_type sse_extractors[NUM_EXTRACTORS] = { |
| aom_get_y_sse, aom_get_u_sse, aom_get_v_sse, |
| #if CONFIG_HIGHBITDEPTH |
| aom_highbd_get_y_sse, aom_highbd_get_u_sse, aom_highbd_get_v_sse, |
| #endif // CONFIG_HIGHBITDEPTH |
| }; |
| |
| static int64_t sse_restoration_tile(const RestorationTileLimits *limits, |
| const YV12_BUFFER_CONFIG *src, |
| const YV12_BUFFER_CONFIG *dst, int plane, |
| int highbd) { |
| assert(CONFIG_HIGHBITDEPTH || !highbd); |
| return sse_part_extractors[3 * highbd + plane]( |
| src, dst, limits->h_start, limits->h_end - limits->h_start, |
| limits->v_start, limits->v_end - limits->v_start); |
| } |
| |
| static int64_t sse_restoration_frame(const YV12_BUFFER_CONFIG *src, |
| const YV12_BUFFER_CONFIG *dst, int plane, |
| int highbd) { |
| assert(CONFIG_HIGHBITDEPTH || !highbd); |
| return sse_extractors[3 * highbd + plane](src, dst); |
| } |
| |
| static int64_t try_restoration_tile(const AV1_COMMON *cm, |
| const YV12_BUFFER_CONFIG *src, |
| const RestorationTileLimits *limits, |
| const RestorationUnitInfo *rui, |
| YV12_BUFFER_CONFIG *dst, int plane) { |
| const RestorationInfo *prsi = &cm->rst_info[plane]; |
| const int is_uv = plane > 0; |
| #if CONFIG_STRIPED_LOOP_RESTORATION |
| RestorationLineBuffers rlbs; |
| const int ss_y = is_uv && cm->subsampling_y; |
| #endif |
| #if CONFIG_HIGHBITDEPTH |
| const int bit_depth = cm->bit_depth; |
| const int highbd = cm->use_highbitdepth; |
| #else |
| const int bit_depth = 8; |
| const int highbd = 0; |
| #endif |
| |
| const YV12_BUFFER_CONFIG *fts = cm->frame_to_show; |
| |
| av1_loop_restoration_filter_unit(limits, rui, |
| #if CONFIG_STRIPED_LOOP_RESTORATION |
| &prsi->boundaries, &rlbs, ss_y, |
| #endif |
| prsi->procunit_width, prsi->procunit_height, |
| highbd, bit_depth, fts->buffers[plane], |
| fts->strides[is_uv], dst->buffers[plane], |
| dst->strides[is_uv], cm->rst_tmpbuf); |
| |
| return sse_restoration_tile(limits, src, dst, plane, highbd); |
| } |
| |
| static int64_t try_restoration_frame(const YV12_BUFFER_CONFIG *src, |
| AV1_COMMON *cm, RestorationInfo *rsi, |
| YV12_BUFFER_CONFIG *dst, int plane) { |
| #if CONFIG_HIGHBITDEPTH |
| const int highbd = cm->use_highbitdepth; |
| #else |
| const int highbd = 0; |
| #endif // CONFIG_HIGHBITDEPTH |
| |
| av1_loop_restoration_filter_frame(cm->frame_to_show, cm, rsi, 1 << plane, |
| dst); |
| return sse_restoration_frame(src, dst, plane, highbd); |
| } |
| |
| static int64_t get_pixel_proj_error(const uint8_t *src8, int width, int height, |
| int src_stride, const uint8_t *dat8, |
| int dat_stride, int use_highbitdepth, |
| 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 (!use_highbitdepth) { |
| 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( |
| const uint8_t *src8, int width, int height, int src_stride, |
| const uint8_t *dat8, int dat_stride, int use_highbitdepth, 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, use_highbitdepth, 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, use_highbitdepth, 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, use_highbitdepth, 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(const uint8_t *src8, int width, int height, |
| int src_stride, uint8_t *dat8, int dat_stride, |
| int use_highbitdepth, 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 (!use_highbitdepth) { |
| 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, const uint8_t *src8, |
| int src_stride, int use_highbitdepth, |
| int bit_depth, int pu_width, |
| int pu_height, int *eps, int *xqd, |
| int32_t *rstbuf) { |
| int32_t *flt1 = rstbuf; |
| int32_t *flt2 = flt1 + RESTORATION_TILEPELS_MAX; |
| int ep, bestep = 0; |
| int64_t err, besterr = -1; |
| int exqd[2], bestxqd[2] = { 0, 0 }; |
| int flt1_stride = ((width + 7) & ~7) + 8; |
| int flt2_stride = ((width + 7) & ~7) + 8; |
| assert(pu_width == (RESTORATION_PROC_UNIT_SIZE >> 1) || |
| pu_width == RESTORATION_PROC_UNIT_SIZE); |
| assert(pu_height == (RESTORATION_PROC_UNIT_SIZE >> 1) || |
| pu_height == RESTORATION_PROC_UNIT_SIZE); |
| #if !CONFIG_HIGHBITDEPTH |
| (void)bit_depth; |
| #endif |
| |
| for (ep = 0; ep < SGRPROJ_PARAMS; ep++) { |
| int exq[2]; |
| #if CONFIG_HIGHBITDEPTH |
| if (use_highbitdepth) { |
| uint16_t *dat = CONVERT_TO_SHORTPTR(dat8); |
| for (int i = 0; i < height; i += pu_height) |
| for (int j = 0; j < width; j += pu_width) { |
| const int w = AOMMIN(pu_width, width - j); |
| const int h = AOMMIN(pu_height, height - i); |
| uint16_t *dat_p = dat + i * dat_stride + j; |
| int32_t *flt1_p = flt1 + i * flt1_stride + j; |
| int32_t *flt2_p = flt2 + i * flt2_stride + j; |
| #if USE_HIGHPASS_IN_SGRPROJ |
| av1_highpass_filter_highbd(dat_p, w, h, dat_stride, flt1_p, |
| flt1_stride, sgr_params[ep].corner, |
| sgr_params[ep].edge); |
| #else |
| av1_selfguided_restoration_highbd( |
| dat_p, w, h, dat_stride, flt1_p, flt1_stride, bit_depth, |
| sgr_params[ep].r1, sgr_params[ep].e1); |
| #endif // USE_HIGHPASS_IN_SGRPROJ |
| av1_selfguided_restoration_highbd( |
| dat_p, w, h, dat_stride, flt2_p, flt2_stride, bit_depth, |
| sgr_params[ep].r2, sgr_params[ep].e2); |
| } |
| } else { |
| #endif |
| for (int i = 0; i < height; i += pu_height) |
| for (int j = 0; j < width; j += pu_width) { |
| const int w = AOMMIN(pu_width, width - j); |
| const int h = AOMMIN(pu_height, height - i); |
| uint8_t *dat_p = dat8 + i * dat_stride + j; |
| int32_t *flt1_p = flt1 + i * flt1_stride + j; |
| int32_t *flt2_p = flt2 + i * flt2_stride + j; |
| #if USE_HIGHPASS_IN_SGRPROJ |
| av1_highpass_filter(dat_p, w, h, dat_stride, flt1_p, flt1_stride, |
| sgr_params[ep].corner, sgr_params[ep].edge); |
| #else |
| av1_selfguided_restoration(dat_p, w, h, dat_stride, flt1_p, flt1_stride, |
| sgr_params[ep].r1, sgr_params[ep].e1); |
| #endif // USE_HIGHPASS_IN_SGRPROJ |
| av1_selfguided_restoration(dat_p, w, h, dat_stride, flt2_p, |
| flt2_stride, sgr_params[ep].r2, |
| sgr_params[ep].e2); |
| } |
| #if CONFIG_HIGHBITDEPTH |
| } |
| #endif |
| aom_clear_system_state(); |
| get_proj_subspace(src8, width, height, src_stride, dat8, dat_stride, |
| use_highbitdepth, flt1, flt1_stride, flt2, flt2_stride, |
| exq); |
| aom_clear_system_state(); |
| encode_xq(exq, exqd); |
| err = finer_search_pixel_proj_error( |
| src8, width, height, src_stride, dat8, dat_stride, use_highbitdepth, |
| flt1, flt1_stride, flt2, flt2_stride, 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; |
| } |
| |
| struct rest_search_ctxt { |
| const YV12_BUFFER_CONFIG *src; |
| AV1_COMP *cpi; |
| uint8_t *dgd_buffer; |
| const uint8_t *src_buffer; |
| int dgd_stride; |
| int src_stride; |
| RestorationInfo *info; |
| RestorationType *type; |
| int64_t *best_tile_cost; |
| int plane; |
| int plane_width; |
| int plane_height; |
| int nrtiles_x; |
| int nrtiles_y; |
| YV12_BUFFER_CONFIG *dst_frame; |
| }; |
| |
| // Fill in ctxt. Returns the number of restoration tiles for this plane |
| static INLINE int init_rest_search_ctxt( |
| const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi, int plane, |
| RestorationInfo *info, RestorationType *type, int64_t *best_tile_cost, |
| YV12_BUFFER_CONFIG *dst_frame, struct rest_search_ctxt *ctxt) { |
| AV1_COMMON *const cm = &cpi->common; |
| ctxt->src = src; |
| ctxt->cpi = cpi; |
| ctxt->info = info; |
| ctxt->type = type; |
| ctxt->best_tile_cost = best_tile_cost; |
| ctxt->plane = plane; |
| ctxt->dst_frame = dst_frame; |
| |
| const YV12_BUFFER_CONFIG *dgd = cm->frame_to_show; |
| const int is_uv = plane != AOM_PLANE_Y; |
| ctxt->plane_width = src->crop_widths[is_uv]; |
| ctxt->plane_height = src->crop_heights[is_uv]; |
| ctxt->src_buffer = src->buffers[plane]; |
| ctxt->src_stride = src->strides[is_uv]; |
| ctxt->dgd_buffer = dgd->buffers[plane]; |
| ctxt->dgd_stride = dgd->strides[is_uv]; |
| assert(src->crop_widths[is_uv] == dgd->crop_widths[is_uv]); |
| assert(src->crop_heights[is_uv] == dgd->crop_heights[is_uv]); |
| |
| return av1_get_rest_ntiles(ctxt->plane_width, ctxt->plane_height, |
| cm->rst_info[plane].restoration_tilesize, |
| &ctxt->nrtiles_x, &ctxt->nrtiles_y); |
| } |
| |
| typedef void (*rtile_visitor_t)(const struct rest_search_ctxt *search_ctxt, |
| int rtile_idx, |
| const RestorationTileLimits *limits, void *arg); |
| |
| static void foreach_rtile_in_tile(const struct rest_search_ctxt *ctxt, |
| int tile_row, int tile_col, |
| rtile_visitor_t fun, void *arg) { |
| const AV1_COMMON *const cm = &ctxt->cpi->common; |
| const RestorationInfo *rsi = ctxt->cpi->rst_search; |
| TileInfo tile_info; |
| |
| av1_tile_set_row(&tile_info, cm, tile_row); |
| av1_tile_set_col(&tile_info, cm, tile_col); |
| |
| int tile_col_start = tile_info.mi_col_start * MI_SIZE; |
| int tile_col_end = tile_info.mi_col_end * MI_SIZE; |
| int tile_row_start = tile_info.mi_row_start * MI_SIZE; |
| int tile_row_end = tile_info.mi_row_end * MI_SIZE; |
| if (ctxt->plane > 0) { |
| tile_col_start = ROUND_POWER_OF_TWO(tile_col_start, cm->subsampling_x); |
| tile_col_end = ROUND_POWER_OF_TWO(tile_col_end, cm->subsampling_x); |
| tile_row_start = ROUND_POWER_OF_TWO(tile_row_start, cm->subsampling_y); |
| tile_row_end = ROUND_POWER_OF_TWO(tile_row_end, cm->subsampling_y); |
| } |
| |
| #if CONFIG_FRAME_SUPERRES |
| // If upscaling is enabled, the tile limits need scaling to match the |
| // upscaled frame where the restoration tiles live. To do this, scale up the |
| // top-left and bottom-right of the tile. |
| if (!av1_superres_unscaled(cm)) { |
| av1_calculate_unscaled_superres_size(&tile_col_start, &tile_row_start, |
| cm->superres_scale_denominator); |
| av1_calculate_unscaled_superres_size(&tile_col_end, &tile_row_end, |
| cm->superres_scale_denominator); |
| // Make sure we don't fall off the bottom-right of the frame. |
| tile_col_end = AOMMIN(tile_col_end, ctxt->plane_width); |
| tile_row_end = AOMMIN(tile_row_end, ctxt->plane_height); |
| } |
| #endif // CONFIG_FRAME_SUPERRES |
| |
| const int rtile_size = rsi->restoration_tilesize; |
| const int rtile_col0 = (tile_col_start + rtile_size - 1) / rtile_size; |
| const int rtile_col1 = |
| AOMMIN((tile_col_end + rtile_size - 1) / rtile_size, ctxt->nrtiles_x); |
| const int rtile_row0 = (tile_row_start + rtile_size - 1) / rtile_size; |
| const int rtile_row1 = |
| AOMMIN((tile_row_end + rtile_size - 1) / rtile_size, ctxt->nrtiles_y); |
| const int ss_y = ctxt->plane > 0 && cm->subsampling_y; |
| |
| for (int rtile_row = rtile_row0; rtile_row < rtile_row1; ++rtile_row) { |
| for (int rtile_col = rtile_col0; rtile_col < rtile_col1; ++rtile_col) { |
| const int rtile_idx = rtile_row * ctxt->nrtiles_x + rtile_col; |
| RestorationTileLimits limits = av1_get_rest_tile_limits( |
| rtile_idx, ctxt->nrtiles_x, ctxt->nrtiles_y, rtile_size, |
| ctxt->plane_width, ctxt->plane_height, ss_y); |
| fun(ctxt, rtile_idx, &limits, arg); |
| } |
| } |
| } |
| |
| static void search_sgrproj_for_rtile(const struct rest_search_ctxt *ctxt, |
| int rtile_idx, |
| const RestorationTileLimits *limits, |
| void *arg) { |
| const MACROBLOCK *const x = &ctxt->cpi->td.mb; |
| const AV1_COMMON *const cm = &ctxt->cpi->common; |
| RestorationInfo *rsi = ctxt->cpi->rst_search; |
| SgrprojInfo *ref_sgrproj_info = (SgrprojInfo *)arg; |
| |
| #if CONFIG_HIGHBITDEPTH |
| const int highbd = cm->use_highbitdepth; |
| const int bit_depth = cm->bit_depth; |
| #else |
| const int highbd = 0; |
| const int bit_depth = 8; |
| #endif // CONFIG_HIGHBITDEPTH |
| |
| int64_t err = sse_restoration_tile(limits, ctxt->src, cm->frame_to_show, |
| ctxt->plane, highbd); |
| // #bits when a tile is not restored |
| int bits = x->sgrproj_restore_cost[0]; |
| double cost_norestore = RDCOST_DBL(x->rdmult, (bits >> 4), err); |
| ctxt->best_tile_cost[rtile_idx] = INT64_MAX; |
| |
| RestorationUnitInfo *plane_rui = &rsi[ctxt->plane].unit_info[rtile_idx]; |
| SgrprojInfo *rtile_sgrproj_info = &plane_rui->sgrproj_info; |
| uint8_t *dgd_start = |
| ctxt->dgd_buffer + limits->v_start * ctxt->dgd_stride + limits->h_start; |
| const uint8_t *src_start = |
| ctxt->src_buffer + limits->v_start * ctxt->src_stride + limits->h_start; |
| |
| search_selfguided_restoration( |
| dgd_start, limits->h_end - limits->h_start, |
| limits->v_end - limits->v_start, ctxt->dgd_stride, src_start, |
| ctxt->src_stride, highbd, bit_depth, rsi[ctxt->plane].procunit_width, |
| rsi[ctxt->plane].procunit_height, &rtile_sgrproj_info->ep, |
| rtile_sgrproj_info->xqd, cm->rst_tmpbuf); |
| |
| plane_rui->restoration_type = RESTORE_SGRPROJ; |
| err = try_restoration_tile(cm, ctxt->src, limits, plane_rui, ctxt->dst_frame, |
| ctxt->plane); |
| |
| bits = count_sgrproj_bits(rtile_sgrproj_info, ref_sgrproj_info) |
| << AV1_PROB_COST_SHIFT; |
| bits += x->sgrproj_restore_cost[1]; |
| double cost_sgrproj = RDCOST_DBL(x->rdmult, (bits >> 4), err); |
| if (cost_sgrproj >= cost_norestore) { |
| ctxt->type[rtile_idx] = RESTORE_NONE; |
| } else { |
| ctxt->type[rtile_idx] = RESTORE_SGRPROJ; |
| SgrprojInfo *sgrproj_info = &ctxt->info->unit_info[rtile_idx].sgrproj_info; |
| *ref_sgrproj_info = *sgrproj_info = plane_rui->sgrproj_info; |
| ctxt->best_tile_cost[rtile_idx] = err; |
| } |
| plane_rui->restoration_type = RESTORE_NONE; |
| } |
| |
| static double search_sgrproj(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi, |
| int plane, RestorationInfo *info, |
| RestorationType *type, int64_t *best_tile_cost, |
| YV12_BUFFER_CONFIG *dst_frame) { |
| const MACROBLOCK *const x = &cpi->td.mb; |
| struct rest_search_ctxt ctxt; |
| const int nrtiles = init_rest_search_ctxt(src, cpi, plane, info, type, |
| best_tile_cost, dst_frame, &ctxt); |
| |
| RestorationInfo *plane_rsi = &cpi->rst_search[plane]; |
| plane_rsi->frame_restoration_type = RESTORE_SGRPROJ; |
| for (int rtile_idx = 0; rtile_idx < nrtiles; ++rtile_idx) { |
| plane_rsi->unit_info[rtile_idx].restoration_type = RESTORE_NONE; |
| } |
| |
| // Compute best Sgrproj filters for each rtile, one (encoder/decoder) |
| // tile at a time. |
| AV1_COMMON *const cm = &cpi->common; |
| #if CONFIG_HIGHBITDEPTH |
| const int highbd = cm->use_highbitdepth; |
| #else |
| const int highbd = 0; |
| #endif |
| extend_frame(ctxt.dgd_buffer, ctxt.plane_width, ctxt.plane_height, |
| ctxt.dgd_stride, SGRPROJ_BORDER_HORZ, SGRPROJ_BORDER_VERT, |
| highbd); |
| |
| for (int tile_row = 0; tile_row < cm->tile_rows; ++tile_row) { |
| for (int tile_col = 0; tile_col < cm->tile_cols; ++tile_col) { |
| SgrprojInfo ref_sgrproj_info; |
| set_default_sgrproj(&ref_sgrproj_info); |
| foreach_rtile_in_tile(&ctxt, tile_row, tile_col, search_sgrproj_for_rtile, |
| &ref_sgrproj_info); |
| } |
| } |
| |
| // Cost for Sgrproj filtering |
| SgrprojInfo ref_sgrproj_info; |
| set_default_sgrproj(&ref_sgrproj_info); |
| |
| int bits = frame_level_restore_bits[plane_rsi->frame_restoration_type] |
| << AV1_PROB_COST_SHIFT; |
| for (int rtile_idx = 0; rtile_idx < nrtiles; ++rtile_idx) { |
| RestorationUnitInfo *plane_rui = &plane_rsi->unit_info[rtile_idx]; |
| RestorationUnitInfo *search_rui = &info->unit_info[rtile_idx]; |
| |
| bits += x->sgrproj_restore_cost[type[rtile_idx] != RESTORE_NONE]; |
| plane_rui->sgrproj_info = search_rui->sgrproj_info; |
| if (type[rtile_idx] == RESTORE_SGRPROJ) { |
| bits += count_sgrproj_bits(&plane_rui->sgrproj_info, &ref_sgrproj_info) |
| << AV1_PROB_COST_SHIFT; |
| ref_sgrproj_info = plane_rui->sgrproj_info; |
| } |
| plane_rui->restoration_type = type[rtile_idx]; |
| } |
| int64_t err = |
| try_restoration_frame(src, cm, cpi->rst_search, dst_frame, plane); |
| double cost_sgrproj = RDCOST_DBL(cpi->td.mb.rdmult, (bits >> 4), err); |
| return cost_sgrproj; |
| } |
| |
| static double find_average(const 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(int wiener_win, const uint8_t *dgd, |
| const 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 int wiener_win2 = wiener_win * wiener_win; |
| const int wiener_halfwin = (wiener_win >> 1); |
| 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++; |
| } |
| } |
| assert(idx == wiener_win2); |
| 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(const 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(int wiener_win, const uint8_t *dgd8, |
| const 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]; |
| const int wiener_win2 = wiener_win * wiener_win; |
| const int wiener_halfwin = (wiener_win >> 1); |
| const uint16_t *src = CONVERT_TO_SHORTPTR(src8); |
| const 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++; |
| } |
| } |
| assert(idx == wiener_win2); |
| 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, int wiener_win) { |
| const int wiener_halfwin1 = (wiener_win >> 1) + 1; |
| return (i >= wiener_halfwin1 ? wiener_win - 1 - i : i); |
| } |
| |
| // Fix vector b, update vector a |
| static void update_a_sep_sym(int wiener_win, double **Mc, double **Hc, |
| double *a, double *b) { |
| int i, j; |
| double S[WIENER_WIN]; |
| double A[WIENER_HALFWIN1], B[WIENER_HALFWIN1 * WIENER_HALFWIN1]; |
| const int wiener_win2 = wiener_win * wiener_win; |
| const int wiener_halfwin1 = (wiener_win >> 1) + 1; |
| 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, wiener_win); |
| 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, wiener_win); |
| const int ll = wrap_index(l, wiener_win); |
| 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 |
| for (i = 0; i < wiener_halfwin1 - 1; ++i) |
| A[i] -= |
| A[wiener_halfwin1 - 1] * 2 + |
| B[i * wiener_halfwin1 + wiener_halfwin1 - 1] - |
| 2 * B[(wiener_halfwin1 - 1) * wiener_halfwin1 + (wiener_halfwin1 - 1)]; |
| for (i = 0; i < wiener_halfwin1 - 1; ++i) |
| for (j = 0; j < wiener_halfwin1 - 1; ++j) |
| B[i * wiener_halfwin1 + j] -= |
| 2 * (B[i * wiener_halfwin1 + (wiener_halfwin1 - 1)] + |
| B[(wiener_halfwin1 - 1) * wiener_halfwin1 + j] - |
| 2 * B[(wiener_halfwin1 - 1) * wiener_halfwin1 + |
| (wiener_halfwin1 - 1)]); |
| if (linsolve(wiener_halfwin1 - 1, B, wiener_halfwin1, A, S)) { |
| S[wiener_halfwin1 - 1] = 1.0; |
| for (i = wiener_halfwin1; i < wiener_win; ++i) { |
| S[i] = S[wiener_win - 1 - i]; |
| S[wiener_halfwin1 - 1] -= 2 * S[i]; |
| } |
| memcpy(a, S, wiener_win * sizeof(*a)); |
| } |
| } |
| |
| // Fix vector a, update vector b |
| static void update_b_sep_sym(int wiener_win, double **Mc, double **Hc, |
| double *a, double *b) { |
| int i, j; |
| double S[WIENER_WIN]; |
| double A[WIENER_HALFWIN1], B[WIENER_HALFWIN1 * WIENER_HALFWIN1]; |
| const int wiener_win2 = wiener_win * wiener_win; |
| const int wiener_halfwin1 = (wiener_win >> 1) + 1; |
| memset(A, 0, sizeof(A)); |
| memset(B, 0, sizeof(B)); |
| for (i = 0; i < wiener_win; i++) { |
| const int ii = wrap_index(i, wiener_win); |
| 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, wiener_win); |
| const int jj = wrap_index(j, wiener_win); |
| 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 |
| for (i = 0; i < wiener_halfwin1 - 1; ++i) |
| A[i] -= |
| A[wiener_halfwin1 - 1] * 2 + |
| B[i * wiener_halfwin1 + wiener_halfwin1 - 1] - |
| 2 * B[(wiener_halfwin1 - 1) * wiener_halfwin1 + (wiener_halfwin1 - 1)]; |
| for (i = 0; i < wiener_halfwin1 - 1; ++i) |
| for (j = 0; j < wiener_halfwin1 - 1; ++j) |
| B[i * wiener_halfwin1 + j] -= |
| 2 * (B[i * wiener_halfwin1 + (wiener_halfwin1 - 1)] + |
| B[(wiener_halfwin1 - 1) * wiener_halfwin1 + j] - |
| 2 * B[(wiener_halfwin1 - 1) * wiener_halfwin1 + |
| (wiener_halfwin1 - 1)]); |
| if (linsolve(wiener_halfwin1 - 1, B, wiener_halfwin1, A, S)) { |
| S[wiener_halfwin1 - 1] = 1.0; |
| for (i = wiener_halfwin1; i < wiener_win; ++i) { |
| S[i] = S[wiener_win - 1 - i]; |
| S[wiener_halfwin1 - 1] -= 2 * S[i]; |
| } |
| memcpy(b, S, wiener_win * sizeof(*b)); |
| } |
| } |
| |
| static int wiener_decompose_sep_sym(int wiener_win, 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, |
| }; |
| double *Hc[WIENER_WIN2]; |
| double *Mc[WIENER_WIN]; |
| int i, j, iter; |
| const int plane_off = (WIENER_WIN - wiener_win) >> 1; |
| const int wiener_win2 = wiener_win * wiener_win; |
| for (i = 0; i < wiener_win; i++) { |
| a[i] = b[i] = (double)init_filt[i + plane_off] / WIENER_FILT_STEP; |
| } |
| 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; |
| } |
| } |
| |
| iter = 1; |
| while (iter < NUM_WIENER_ITERS) { |
| update_a_sep_sym(wiener_win, Mc, Hc, a, b); |
| update_b_sep_sym(wiener_win, 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(int wiener_win, 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]; |
| const int plane_off = (WIENER_WIN - wiener_win) >> 1; |
| const int wiener_win2 = wiener_win * 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]; |
| } |
| memset(ab, 0, sizeof(ab)); |
| for (k = 0; k < wiener_win; ++k) { |
| for (l = 0; l < wiener_win; ++l) |
| ab[k * wiener_win + l] = a[l + plane_off] * b[k + plane_off]; |
| } |
| 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(int wiener_win, double *f, InterpKernel fi) { |
| int i; |
| const int wiener_halfwin = (wiener_win >> 1); |
| for (i = 0; i < wiener_halfwin; ++i) { |
| fi[i] = RINT(f[i] * WIENER_FILT_STEP); |
| } |
| // Specialize for 7-tap filter |
| if (wiener_win == WIENER_WIN) { |
| 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); |
| } else { |
| fi[2] = CLIP(fi[1], WIENER_FILT_TAP2_MINV, WIENER_FILT_TAP2_MAXV); |
| fi[1] = CLIP(fi[0], WIENER_FILT_TAP1_MINV, WIENER_FILT_TAP1_MAXV); |
| fi[0] = 0; |
| } |
| // 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(int wiener_win, WienerInfo *wiener_info, |
| WienerInfo *ref_wiener_info) { |
| int bits = 0; |
| if (wiener_win == WIENER_WIN) |
| 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); |
| if (wiener_win == WIENER_WIN) |
| 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 AV1_COMMON *cm, const YV12_BUFFER_CONFIG *src, |
| const RestorationTileLimits *limits, RestorationUnitInfo *rui, |
| int start_step, int plane, int wiener_win, YV12_BUFFER_CONFIG *dst_frame) { |
| const int plane_off = (WIENER_WIN - wiener_win) >> 1; |
| int64_t err = try_restoration_tile(cm, src, limits, rui, dst_frame, plane); |
| (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 }; |
| |
| WienerInfo *plane_wiener = &rui->wiener_info; |
| |
| // printf("err pre = %"PRId64"\n", err); |
| for (int s = start_step; s >= 1; s >>= 1) { |
| for (int p = plane_off; p < WIENER_HALFWIN; ++p) { |
| int skip = 0; |
| do { |
| if (plane_wiener->hfilter[p] - s >= tap_min[p]) { |
| plane_wiener->hfilter[p] -= s; |
| plane_wiener->hfilter[WIENER_WIN - p - 1] -= s; |
| plane_wiener->hfilter[WIENER_HALFWIN] += 2 * s; |
| err2 = try_restoration_tile(cm, src, limits, rui, dst_frame, plane); |
| if (err2 > err) { |
| plane_wiener->hfilter[p] += s; |
| plane_wiener->hfilter[WIENER_WIN - p - 1] += s; |
| plane_wiener->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 (plane_wiener->hfilter[p] + s <= tap_max[p]) { |
| plane_wiener->hfilter[p] += s; |
| plane_wiener->hfilter[WIENER_WIN - p - 1] += s; |
| plane_wiener->hfilter[WIENER_HALFWIN] -= 2 * s; |
| err2 = try_restoration_tile(cm, src, limits, rui, dst_frame, plane); |
| if (err2 > err) { |
| plane_wiener->hfilter[p] -= s; |
| plane_wiener->hfilter[WIENER_WIN - p - 1] -= s; |
| plane_wiener->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 = plane_off; p < WIENER_HALFWIN; ++p) { |
| int skip = 0; |
| do { |
| if (plane_wiener->vfilter[p] - s >= tap_min[p]) { |
| plane_wiener->vfilter[p] -= s; |
| plane_wiener->vfilter[WIENER_WIN - p - 1] -= s; |
| plane_wiener->vfilter[WIENER_HALFWIN] += 2 * s; |
| err2 = try_restoration_tile(cm, src, limits, rui, dst_frame, plane); |
| if (err2 > err) { |
| plane_wiener->vfilter[p] += s; |
| plane_wiener->vfilter[WIENER_WIN - p - 1] += s; |
| plane_wiener->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 (plane_wiener->vfilter[p] + s <= tap_max[p]) { |
| plane_wiener->vfilter[p] += s; |
| plane_wiener->vfilter[WIENER_WIN - p - 1] += s; |
| plane_wiener->vfilter[WIENER_HALFWIN] -= 2 * s; |
| err2 = try_restoration_tile(cm, src, limits, rui, dst_frame, plane); |
| if (err2 > err) { |
| plane_wiener->vfilter[p] -= s; |
| plane_wiener->vfilter[WIENER_WIN - p - 1] -= s; |
| plane_wiener->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 void search_wiener_for_rtile(const struct rest_search_ctxt *ctxt, |
| int rtile_idx, |
| const RestorationTileLimits *limits, |
| void *arg) { |
| const MACROBLOCK *const x = &ctxt->cpi->td.mb; |
| const AV1_COMMON *const cm = &ctxt->cpi->common; |
| RestorationInfo *rsi = ctxt->cpi->rst_search; |
| |
| const int wiener_win = |
| (ctxt->plane == AOM_PLANE_Y) ? WIENER_WIN : WIENER_WIN_CHROMA; |
| |
| double M[WIENER_WIN2]; |
| double H[WIENER_WIN2 * WIENER_WIN2]; |
| double vfilterd[WIENER_WIN], hfilterd[WIENER_WIN]; |
| |
| WienerInfo *ref_wiener_info = (WienerInfo *)arg; |
| |
| #if CONFIG_HIGHBITDEPTH |
| const int highbd = cm->use_highbitdepth; |
| #else |
| const int highbd = 0; |
| #endif // CONFIG_HIGHBITDEPTH |
| |
| int64_t err = sse_restoration_tile(limits, ctxt->src, cm->frame_to_show, |
| ctxt->plane, highbd); |
| // #bits when a tile is not restored |
| int bits = x->wiener_restore_cost[0]; |
| double cost_norestore = RDCOST_DBL(x->rdmult, (bits >> 4), err); |
| ctxt->best_tile_cost[rtile_idx] = INT64_MAX; |
| |
| #if CONFIG_HIGHBITDEPTH |
| if (cm->use_highbitdepth) |
| compute_stats_highbd(wiener_win, ctxt->dgd_buffer, ctxt->src_buffer, |
| limits->h_start, limits->h_end, limits->v_start, |
| limits->v_end, ctxt->dgd_stride, ctxt->src_stride, M, |
| H); |
| else |
| #endif // CONFIG_HIGHBITDEPTH |
| compute_stats(wiener_win, ctxt->dgd_buffer, ctxt->src_buffer, |
| limits->h_start, limits->h_end, limits->v_start, |
| limits->v_end, ctxt->dgd_stride, ctxt->src_stride, M, H); |
| |
| ctxt->type[rtile_idx] = RESTORE_WIENER; |
| |
| if (!wiener_decompose_sep_sym(wiener_win, M, H, vfilterd, hfilterd)) { |
| ctxt->type[rtile_idx] = RESTORE_NONE; |
| return; |
| } |
| |
| RestorationUnitInfo *plane_rui = &rsi[ctxt->plane].unit_info[rtile_idx]; |
| WienerInfo *rtile_wiener_info = &plane_rui->wiener_info; |
| quantize_sym_filter(wiener_win, vfilterd, rtile_wiener_info->vfilter); |
| quantize_sym_filter(wiener_win, hfilterd, rtile_wiener_info->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 |
| double score = compute_score(wiener_win, M, H, rtile_wiener_info->vfilter, |
| rtile_wiener_info->hfilter); |
| if (score > 0.0) { |
| ctxt->type[rtile_idx] = RESTORE_NONE; |
| return; |
| } |
| aom_clear_system_state(); |
| |
| plane_rui->restoration_type = RESTORE_WIENER; |
| err = |
| finer_tile_search_wiener(&ctxt->cpi->common, ctxt->src, limits, plane_rui, |
| 4, ctxt->plane, wiener_win, ctxt->dst_frame); |
| if (wiener_win != WIENER_WIN) { |
| assert(rtile_wiener_info->vfilter[0] == 0 && |
| rtile_wiener_info->vfilter[WIENER_WIN - 1] == 0); |
| assert(rtile_wiener_info->hfilter[0] == 0 && |
| rtile_wiener_info->hfilter[WIENER_WIN - 1] == 0); |
| } |
| bits = count_wiener_bits(wiener_win, rtile_wiener_info, ref_wiener_info) |
| << AV1_PROB_COST_SHIFT; |
| bits += x->wiener_restore_cost[1]; |
| double cost_wiener = RDCOST_DBL(x->rdmult, (bits >> 4), err); |
| if (cost_wiener >= cost_norestore) { |
| ctxt->type[rtile_idx] = RESTORE_NONE; |
| } else { |
| ctxt->type[rtile_idx] = RESTORE_WIENER; |
| *ref_wiener_info = ctxt->info->unit_info[rtile_idx].wiener_info = |
| *rtile_wiener_info; |
| ctxt->best_tile_cost[rtile_idx] = err; |
| } |
| plane_rui->restoration_type = RESTORE_NONE; |
| } |
| |
| static double search_wiener(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi, |
| int plane, RestorationInfo *info, |
| RestorationType *type, int64_t *best_tile_cost, |
| YV12_BUFFER_CONFIG *dst_frame) { |
| const MACROBLOCK *const x = &cpi->td.mb; |
| struct rest_search_ctxt ctxt; |
| const int nrtiles = init_rest_search_ctxt(src, cpi, plane, info, type, |
| best_tile_cost, dst_frame, &ctxt); |
| |
| RestorationInfo *plane_rsi = &cpi->rst_search[plane]; |
| plane_rsi->frame_restoration_type = RESTORE_WIENER; |
| for (int tile_idx = 0; tile_idx < nrtiles; ++tile_idx) { |
| plane_rsi->unit_info[tile_idx].restoration_type = RESTORE_NONE; |
| } |
| |
| AV1_COMMON *const cm = &cpi->common; |
| // Construct a (WIENER_HALFWIN)-pixel border around the frame |
| // Note use this border to gather stats even though the actual filter |
| // may use less border on the top/bottom of a processing unit. |
| #if CONFIG_HIGHBITDEPTH |
| const int highbd = cm->use_highbitdepth; |
| #else |
| const int highbd = 0; |
| #endif |
| extend_frame(ctxt.dgd_buffer, ctxt.plane_width, ctxt.plane_height, |
| ctxt.dgd_stride, WIENER_HALFWIN, WIENER_HALFWIN, highbd); |
| |
| // Compute best Wiener filters for each rtile, one (encoder/decoder) |
| // tile at a time. |
| for (int tile_row = 0; tile_row < cm->tile_rows; ++tile_row) { |
| for (int tile_col = 0; tile_col < cm->tile_cols; ++tile_col) { |
| WienerInfo ref_wiener_info; |
| set_default_wiener(&ref_wiener_info); |
| |
| foreach_rtile_in_tile(&ctxt, tile_row, tile_col, search_wiener_for_rtile, |
| &ref_wiener_info); |
| } |
| } |
| |
| // cost for Wiener filtering |
| WienerInfo ref_wiener_info; |
| set_default_wiener(&ref_wiener_info); |
| int bits = frame_level_restore_bits[plane_rsi->frame_restoration_type] |
| << AV1_PROB_COST_SHIFT; |
| const int wiener_win = |
| (plane == AOM_PLANE_Y) ? WIENER_WIN : WIENER_WIN_CHROMA; |
| |
| for (int tile_idx = 0; tile_idx < nrtiles; ++tile_idx) { |
| bits += x->wiener_restore_cost[type[tile_idx] != RESTORE_NONE]; |
| RestorationUnitInfo *plane_rui = &plane_rsi->unit_info[tile_idx]; |
| plane_rui->wiener_info = info->unit_info[tile_idx].wiener_info; |
| |
| if (type[tile_idx] == RESTORE_WIENER) { |
| bits += count_wiener_bits(wiener_win, &plane_rui->wiener_info, |
| &ref_wiener_info) |
| << AV1_PROB_COST_SHIFT; |
| ref_wiener_info = plane_rui->wiener_info; |
| } |
| plane_rui->restoration_type = type[tile_idx]; |
| } |
| int64_t err = |
| try_restoration_frame(src, cm, cpi->rst_search, dst_frame, plane); |
| double cost_wiener = RDCOST_DBL(cpi->td.mb.rdmult, (bits >> 4), err); |
| |
| return cost_wiener; |
| } |
| |
| static double search_norestore(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi, |
| int plane, RestorationInfo *info, |
| RestorationType *type, int64_t *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, nhtiles, nvtiles; |
| |
| #if CONFIG_HIGHBITDEPTH |
| const int highbd = cm->use_highbitdepth; |
| #else |
| const int highbd = 0; |
| #endif // CONFIG_HIGHBITDEPTH |
| |
| const int is_uv = plane > 0; |
| const int ss_y = plane > 0 && cm->subsampling_y; |
| const int width = src->crop_widths[is_uv]; |
| const int height = src->crop_heights[is_uv]; |
| |
| const int rtile_size = cm->rst_info[plane].restoration_tilesize; |
| |
| const int ntiles = |
| av1_get_rest_ntiles(width, height, rtile_size, &nhtiles, &nvtiles); |
| (void)dst_frame; |
| |
| info->frame_restoration_type = RESTORE_NONE; |
| for (tile_idx = 0; tile_idx < ntiles; ++tile_idx) { |
| RestorationTileLimits limits = av1_get_rest_tile_limits( |
| tile_idx, nhtiles, nvtiles, rtile_size, width, height, ss_y); |
| err = sse_restoration_tile(&limits, src, cm->frame_to_show, plane, highbd); |
| type[tile_idx] = RESTORE_NONE; |
| best_tile_cost[tile_idx] = err; |
| } |
| // RD cost associated with no restoration |
| err = sse_restoration_frame(src, cm->frame_to_show, plane, highbd); |
| bits = frame_level_restore_bits[RESTORE_NONE] << AV1_PROB_COST_SHIFT; |
| cost_norestore = RDCOST_DBL(x->rdmult, (bits >> 4), err); |
| return cost_norestore; |
| } |
| |
| struct switchable_rest_search_ctxt { |
| SgrprojInfo sgrproj_info; |
| WienerInfo wiener_info; |
| RestorationType *const *restore_types; |
| int64_t *const *tile_cost; |
| double cost_switchable; |
| }; |
| |
| static void search_switchable_for_rtile(const struct rest_search_ctxt *ctxt, |
| int rtile_idx, |
| const RestorationTileLimits *limits, |
| void *arg) { |
| const MACROBLOCK *x = &ctxt->cpi->td.mb; |
| RestorationUnitInfo *rui = |
| &ctxt->cpi->common.rst_info[ctxt->plane].unit_info[rtile_idx]; |
| struct switchable_rest_search_ctxt *swctxt = |
| (struct switchable_rest_search_ctxt *)arg; |
| |
| (void)limits; |
| |
| double best_cost = |
| RDCOST_DBL(x->rdmult, (x->switchable_restore_cost[RESTORE_NONE] >> 4), |
| swctxt->tile_cost[RESTORE_NONE][rtile_idx]); |
| |
| rui->restoration_type = RESTORE_NONE; |
| for (RestorationType r = 1; r < RESTORE_SWITCHABLE_TYPES; r++) { |
| if (force_restore_type != RESTORE_TYPES) |
| if (r != force_restore_type) continue; |
| int tilebits = 0; |
| if (swctxt->restore_types[r][rtile_idx] != r) continue; |
| if (r == RESTORE_WIENER) |
| tilebits += count_wiener_bits( |
| (ctxt->plane == AOM_PLANE_Y ? WIENER_WIN : WIENER_WIN - 2), |
| &rui->wiener_info, &swctxt->wiener_info); |
| else if (r == RESTORE_SGRPROJ) |
| tilebits += count_sgrproj_bits(&rui->sgrproj_info, &swctxt->sgrproj_info); |
| tilebits <<= AV1_PROB_COST_SHIFT; |
| tilebits += x->switchable_restore_cost[r]; |
| double cost = |
| RDCOST_DBL(x->rdmult, tilebits >> 4, swctxt->tile_cost[r][rtile_idx]); |
| |
| if (cost < best_cost) { |
| rui->restoration_type = r; |
| best_cost = cost; |
| } |
| } |
| if (rui->restoration_type == RESTORE_WIENER) |
| swctxt->wiener_info = rui->wiener_info; |
| else if (rui->restoration_type == RESTORE_SGRPROJ) |
| swctxt->sgrproj_info = rui->sgrproj_info; |
| if (force_restore_type != RESTORE_TYPES) |
| assert(rui->restoration_type == force_restore_type || |
| rui->restoration_type == RESTORE_NONE); |
| swctxt->cost_switchable += best_cost; |
| } |
| |
| static double search_switchable_restoration( |
| const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi, int plane, |
| RestorationType *const restore_types[RESTORE_SWITCHABLE_TYPES], |
| int64_t *const tile_cost[RESTORE_SWITCHABLE_TYPES], RestorationInfo *rsi) { |
| const AV1_COMMON *const cm = &cpi->common; |
| struct rest_search_ctxt ctxt; |
| init_rest_search_ctxt(src, cpi, plane, NULL, NULL, NULL, NULL, &ctxt); |
| struct switchable_rest_search_ctxt swctxt; |
| swctxt.restore_types = restore_types; |
| swctxt.tile_cost = tile_cost; |
| |
| rsi->frame_restoration_type = RESTORE_SWITCHABLE; |
| int bits = frame_level_restore_bits[rsi->frame_restoration_type] |
| << AV1_PROB_COST_SHIFT; |
| swctxt.cost_switchable = RDCOST_DBL(cpi->td.mb.rdmult, bits >> 4, 0); |
| |
| for (int tile_row = 0; tile_row < cm->tile_rows; ++tile_row) { |
| for (int tile_col = 0; tile_col < cm->tile_cols; ++tile_col) { |
| set_default_sgrproj(&swctxt.sgrproj_info); |
| set_default_wiener(&swctxt.wiener_info); |
| foreach_rtile_in_tile(&ctxt, tile_row, tile_col, |
| search_switchable_for_rtile, &swctxt); |
| } |
| } |
| |
| return swctxt.cost_switchable; |
| } |
| |
| void av1_pick_filter_restoration(const YV12_BUFFER_CONFIG *src, AV1_COMP *cpi) { |
| 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]; |
| int64_t *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); |
| const int ntiles_uv = av1_get_rest_ntiles( |
| uvwidth, uvheight, cm->rst_info[1].restoration_tilesize, NULL, NULL); |
| |
| // Assume ntiles_uv is never larger that ntiles_y and so the same arrays work. |
| assert(ntiles_uv <= ntiles_y); |
| for (r = 0; r < RESTORE_SWITCHABLE_TYPES; r++) { |
| tile_cost[r] = (int64_t *)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) { |
| const int ntiles = (plane == AOM_PLANE_Y ? ntiles_y : ntiles_uv); |
| for (r = 0; r < RESTORE_SWITCHABLE_TYPES; ++r) { |
| cost_restore[r] = DBL_MAX; |
| if (force_restore_type != RESTORE_TYPES) |
| if (r != RESTORE_NONE && r != force_restore_type) continue; |
| cost_restore[r] = search_restore_fun[r]( |
| src, cpi, plane, &cm->rst_info[plane], restore_types[r], tile_cost[r], |
| &cpi->trial_frame_rst); |
| } |
| if (ntiles > 1) |
| cost_restore[RESTORE_SWITCHABLE] = search_switchable_restoration( |
| src, cpi, 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 != RESTORE_TYPES) |
| 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 != RESTORE_TYPES) |
| assert(best_restore == force_restore_type || |
| best_restore == RESTORE_NONE); |
| if (best_restore != RESTORE_SWITCHABLE) { |
| for (int u = 0; u < ntiles; ++u) { |
| cm->rst_info[plane].unit_info[u].restoration_type = |
| restore_types[best_restore][u]; |
| } |
| } |
| } |
| /* |
| 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]); |
| } |
| } |
