| /* |
| * Copyright (c) 2021, 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 <math.h> |
| |
| #include "av1/encoder/tune_butteraugli.h" |
| |
| #include "aom_dsp/butteraugli.h" |
| #include "av1/encoder/encodeframe.h" |
| #include "av1/encoder/encoder_utils.h" |
| #include "av1/encoder/extend.h" |
| #include "av1/encoder/var_based_part.h" |
| |
| static const int resize_factor = 2; |
| |
| static void set_mb_butteraugli_rdmult_scaling(AV1_COMP *cpi, |
| const YV12_BUFFER_CONFIG *source, |
| const YV12_BUFFER_CONFIG *recon, |
| const double K) { |
| AV1_COMMON *const cm = &cpi->common; |
| SequenceHeader *const seq_params = cm->seq_params; |
| const CommonModeInfoParams *const mi_params = &cm->mi_params; |
| const aom_color_range_t color_range = |
| seq_params->color_range != 0 ? AOM_CR_FULL_RANGE : AOM_CR_STUDIO_RANGE; |
| const int bit_depth = cpi->td.mb.e_mbd.bd; |
| const int width = source->y_crop_width; |
| const int height = source->y_crop_height; |
| const int ss_x = source->subsampling_x; |
| const int ss_y = source->subsampling_y; |
| |
| float *diffmap; |
| CHECK_MEM_ERROR(cm, diffmap, aom_malloc(width * height * sizeof(*diffmap))); |
| if (!aom_calc_butteraugli(source, recon, bit_depth, |
| seq_params->matrix_coefficients, color_range, |
| diffmap)) { |
| aom_internal_error(cm->error, AOM_CODEC_ERROR, |
| "Failed to calculate Butteraugli distances."); |
| } |
| |
| const int num_mi_w = mi_size_wide[butteraugli_rdo_bsize] / resize_factor; |
| const int num_mi_h = mi_size_high[butteraugli_rdo_bsize] / resize_factor; |
| const int num_cols = |
| (mi_params->mi_cols / resize_factor + num_mi_w - 1) / num_mi_w; |
| const int num_rows = |
| (mi_params->mi_rows / resize_factor + num_mi_h - 1) / num_mi_h; |
| const int block_w = num_mi_w << 2; |
| const int block_h = num_mi_h << 2; |
| double log_sum = 0.0; |
| double blk_count = 0.0; |
| |
| // Loop through each block. |
| for (int row = 0; row < num_rows; ++row) { |
| for (int col = 0; col < num_cols; ++col) { |
| const int index = row * num_cols + col; |
| const int y_start = row * block_h; |
| const int x_start = col * block_w; |
| float dbutteraugli = 0.0f; |
| float dmse = 0.0f; |
| float px_count = 0.0f; |
| |
| // Loop through each pixel. |
| for (int y = y_start; y < y_start + block_h && y < height; y++) { |
| for (int x = x_start; x < x_start + block_w && x < width; x++) { |
| dbutteraugli += powf(diffmap[y * width + x], 12.0f); |
| float px_diff = source->y_buffer[y * source->y_stride + x] - |
| recon->y_buffer[y * recon->y_stride + x]; |
| dmse += px_diff * px_diff; |
| px_count += 1.0f; |
| } |
| } |
| const int y_end = AOMMIN((y_start >> ss_y) + (block_h >> ss_y), |
| (height + ss_y) >> ss_y); |
| for (int y = y_start >> ss_y; y < y_end; y++) { |
| const int x_end = AOMMIN((x_start >> ss_x) + (block_w >> ss_x), |
| (width + ss_x) >> ss_x); |
| for (int x = x_start >> ss_x; x < x_end; x++) { |
| const int src_px_index = y * source->uv_stride + x; |
| const int recon_px_index = y * recon->uv_stride + x; |
| const float px_diff_u = (float)(source->u_buffer[src_px_index] - |
| recon->u_buffer[recon_px_index]); |
| const float px_diff_v = (float)(source->v_buffer[src_px_index] - |
| recon->v_buffer[recon_px_index]); |
| dmse += px_diff_u * px_diff_u + px_diff_v * px_diff_v; |
| px_count += 2.0f; |
| } |
| } |
| |
| dbutteraugli = powf(dbutteraugli, 1.0f / 12.0f); |
| dmse = dmse / px_count; |
| const float eps = 0.01f; |
| double weight; |
| if (dbutteraugli < eps || dmse < eps) { |
| weight = -1.0; |
| } else { |
| blk_count += 1.0; |
| weight = dmse / dbutteraugli; |
| weight = AOMMIN(weight, 5.0); |
| weight += K; |
| log_sum += log(weight); |
| } |
| cpi->butteraugli_info.rdmult_scaling_factors[index] = weight; |
| } |
| } |
| // Geometric average of the weights. |
| log_sum = exp(log_sum / blk_count); |
| |
| for (int row = 0; row < num_rows; ++row) { |
| for (int col = 0; col < num_cols; ++col) { |
| const int index = row * num_cols + col; |
| double *weight = &cpi->butteraugli_info.rdmult_scaling_factors[index]; |
| if (*weight <= 0.0) { |
| *weight = 1.0; |
| } else { |
| *weight /= log_sum; |
| } |
| *weight = AOMMIN(*weight, 2.5); |
| *weight = AOMMAX(*weight, 0.4); |
| } |
| } |
| |
| aom_free(diffmap); |
| } |
| |
| void av1_set_butteraugli_rdmult(const AV1_COMP *cpi, MACROBLOCK *x, |
| BLOCK_SIZE bsize, int mi_row, int mi_col, |
| int *rdmult) { |
| assert(cpi->oxcf.tune_cfg.tuning == AOM_TUNE_BUTTERAUGLI); |
| if (!cpi->butteraugli_info.recon_set) { |
| return; |
| } |
| const AV1_COMMON *const cm = &cpi->common; |
| |
| const int num_mi_w = mi_size_wide[butteraugli_rdo_bsize]; |
| const int num_mi_h = mi_size_high[butteraugli_rdo_bsize]; |
| const int num_cols = (cm->mi_params.mi_cols + num_mi_w - 1) / num_mi_w; |
| const int num_rows = (cm->mi_params.mi_rows + num_mi_h - 1) / num_mi_h; |
| const int num_bcols = (mi_size_wide[bsize] + num_mi_w - 1) / num_mi_w; |
| const int num_brows = (mi_size_high[bsize] + num_mi_h - 1) / num_mi_h; |
| double num_of_mi = 0.0; |
| double geom_mean_of_scale = 0.0; |
| |
| for (int row = mi_row / num_mi_w; |
| row < num_rows && row < mi_row / num_mi_w + num_brows; ++row) { |
| for (int col = mi_col / num_mi_h; |
| col < num_cols && col < mi_col / num_mi_h + num_bcols; ++col) { |
| const int index = row * num_cols + col; |
| geom_mean_of_scale += |
| log(cpi->butteraugli_info.rdmult_scaling_factors[index]); |
| num_of_mi += 1.0; |
| } |
| } |
| geom_mean_of_scale = exp(geom_mean_of_scale / num_of_mi); |
| |
| *rdmult = (int)((double)(*rdmult) * geom_mean_of_scale + 0.5); |
| *rdmult = AOMMAX(*rdmult, 0); |
| av1_set_error_per_bit(&x->errorperbit, *rdmult); |
| } |
| |
| static void copy_plane(const uint8_t *src, int src_stride, uint8_t *dst, |
| int dst_stride, int w, int h) { |
| for (int row = 0; row < h; row++) { |
| memcpy(dst, src, w); |
| src += src_stride; |
| dst += dst_stride; |
| } |
| } |
| |
| static void copy_img(const YV12_BUFFER_CONFIG *src, YV12_BUFFER_CONFIG *dst, |
| int width, int height) { |
| copy_plane(src->y_buffer, src->y_stride, dst->y_buffer, dst->y_stride, width, |
| height); |
| const int width_uv = (width + src->subsampling_x) >> src->subsampling_x; |
| const int height_uv = (height + src->subsampling_y) >> src->subsampling_y; |
| copy_plane(src->u_buffer, src->uv_stride, dst->u_buffer, dst->uv_stride, |
| width_uv, height_uv); |
| copy_plane(src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride, |
| width_uv, height_uv); |
| } |
| |
| static void zero_plane(uint8_t *dst, int dst_stride, int h) { |
| for (int row = 0; row < h; row++) { |
| memset(dst, 0, dst_stride); |
| dst += dst_stride; |
| } |
| } |
| |
| static void zero_img(YV12_BUFFER_CONFIG *dst) { |
| zero_plane(dst->y_buffer, dst->y_stride, dst->y_height); |
| zero_plane(dst->u_buffer, dst->uv_stride, dst->uv_height); |
| zero_plane(dst->v_buffer, dst->uv_stride, dst->uv_height); |
| } |
| |
| void av1_setup_butteraugli_source(AV1_COMP *cpi) { |
| YV12_BUFFER_CONFIG *const dst = &cpi->butteraugli_info.source; |
| AV1_COMMON *const cm = &cpi->common; |
| const int width = cpi->source->y_crop_width; |
| const int height = cpi->source->y_crop_height; |
| const int bit_depth = cpi->td.mb.e_mbd.bd; |
| const int ss_x = cpi->source->subsampling_x; |
| const int ss_y = cpi->source->subsampling_y; |
| if (dst->buffer_alloc_sz == 0) { |
| aom_alloc_frame_buffer( |
| dst, width, height, ss_x, ss_y, cm->seq_params->use_highbitdepth, |
| cpi->oxcf.border_in_pixels, cm->features.byte_alignment, false, 0); |
| } |
| av1_copy_and_extend_frame(cpi->source, dst); |
| |
| YV12_BUFFER_CONFIG *const resized_dst = &cpi->butteraugli_info.resized_source; |
| if (resized_dst->buffer_alloc_sz == 0) { |
| aom_alloc_frame_buffer( |
| resized_dst, width / resize_factor, height / resize_factor, ss_x, ss_y, |
| cm->seq_params->use_highbitdepth, cpi->oxcf.border_in_pixels, |
| cm->features.byte_alignment, false, 0); |
| } |
| if (!av1_resize_and_extend_frame_nonnormative( |
| cpi->source, resized_dst, bit_depth, av1_num_planes(cm))) { |
| aom_internal_error(cm->error, AOM_CODEC_MEM_ERROR, |
| "Error allocating buffers during resize"); |
| } |
| |
| zero_img(cpi->source); |
| copy_img(resized_dst, cpi->source, width / resize_factor, |
| height / resize_factor); |
| } |
| |
| void av1_setup_butteraugli_rdmult_and_restore_source(AV1_COMP *cpi, double K) { |
| av1_copy_and_extend_frame(&cpi->butteraugli_info.source, cpi->source); |
| AV1_COMMON *const cm = &cpi->common; |
| const int width = cpi->source->y_crop_width; |
| const int height = cpi->source->y_crop_height; |
| const int ss_x = cpi->source->subsampling_x; |
| const int ss_y = cpi->source->subsampling_y; |
| |
| YV12_BUFFER_CONFIG resized_recon; |
| memset(&resized_recon, 0, sizeof(resized_recon)); |
| aom_alloc_frame_buffer( |
| &resized_recon, width / resize_factor, height / resize_factor, ss_x, ss_y, |
| cm->seq_params->use_highbitdepth, cpi->oxcf.border_in_pixels, |
| cm->features.byte_alignment, false, 0); |
| copy_img(&cpi->common.cur_frame->buf, &resized_recon, width / resize_factor, |
| height / resize_factor); |
| |
| set_mb_butteraugli_rdmult_scaling(cpi, &cpi->butteraugli_info.resized_source, |
| &resized_recon, K); |
| cpi->butteraugli_info.recon_set = true; |
| aom_free_frame_buffer(&resized_recon); |
| } |
| |
| void av1_setup_butteraugli_rdmult(AV1_COMP *cpi) { |
| AV1_COMMON *const cm = &cpi->common; |
| const AV1EncoderConfig *const oxcf = &cpi->oxcf; |
| const QuantizationCfg *const q_cfg = &oxcf->q_cfg; |
| const int q_index = 96; |
| |
| // Setup necessary params for encoding, including frame source, etc. |
| if (cm->current_frame.frame_type == KEY_FRAME) copy_frame_prob_info(cpi); |
| av1_set_frame_size(cpi, cm->superres_upscaled_width, |
| cm->superres_upscaled_height); |
| |
| cpi->source = av1_realloc_and_scale_if_required( |
| cm, cpi->unscaled_source, &cpi->scaled_source, cm->features.interp_filter, |
| 0, false, false, cpi->oxcf.border_in_pixels, cpi->alloc_pyramid); |
| if (cpi->unscaled_last_source != NULL) { |
| cpi->last_source = av1_realloc_and_scale_if_required( |
| cm, cpi->unscaled_last_source, &cpi->scaled_last_source, |
| cm->features.interp_filter, 0, false, false, cpi->oxcf.border_in_pixels, |
| cpi->alloc_pyramid); |
| } |
| |
| av1_setup_butteraugli_source(cpi); |
| av1_setup_frame(cpi); |
| |
| if (cm->seg.enabled) { |
| if (!cm->seg.update_data && cm->prev_frame) { |
| segfeatures_copy(&cm->seg, &cm->prev_frame->seg); |
| cm->seg.enabled = cm->prev_frame->seg.enabled; |
| } else { |
| av1_calculate_segdata(&cm->seg); |
| } |
| } else { |
| memset(&cm->seg, 0, sizeof(cm->seg)); |
| } |
| segfeatures_copy(&cm->cur_frame->seg, &cm->seg); |
| cm->cur_frame->seg.enabled = cm->seg.enabled; |
| |
| const PARTITION_SEARCH_TYPE partition_search_type = |
| cpi->sf.part_sf.partition_search_type; |
| const BLOCK_SIZE fixed_partition_size = cpi->sf.part_sf.fixed_partition_size; |
| // Enable a quicker pass by uncommenting the following lines: |
| // cpi->sf.part_sf.partition_search_type = FIXED_PARTITION; |
| // cpi->sf.part_sf.fixed_partition_size = BLOCK_32X32; |
| |
| av1_set_quantizer(cm, q_cfg->qm_minlevel, q_cfg->qm_maxlevel, q_index, |
| q_cfg->enable_chroma_deltaq, q_cfg->enable_hdr_deltaq); |
| av1_set_speed_features_qindex_dependent(cpi, oxcf->speed); |
| av1_init_quantizer(&cpi->enc_quant_dequant_params, &cm->quant_params, |
| cm->seq_params->bit_depth); |
| |
| av1_set_variance_partition_thresholds(cpi, q_index, 0); |
| av1_encode_frame(cpi); |
| |
| av1_setup_butteraugli_rdmult_and_restore_source(cpi, 0.3); |
| cpi->sf.part_sf.partition_search_type = partition_search_type; |
| cpi->sf.part_sf.fixed_partition_size = fixed_partition_size; |
| } |