diff options
Diffstat (limited to 'third_party/aom/av1/encoder/aq_complexity.c')
-rw-r--r-- | third_party/aom/av1/encoder/aq_complexity.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/third_party/aom/av1/encoder/aq_complexity.c b/third_party/aom/av1/encoder/aq_complexity.c deleted file mode 100644 index 80f8e2e66..000000000 --- a/third_party/aom/av1/encoder/aq_complexity.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * 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 <limits.h> -#include <math.h> - -#include "av1/encoder/aq_complexity.h" -#include "av1/encoder/aq_variance.h" -#include "av1/encoder/encodeframe.h" -#include "av1/common/seg_common.h" -#include "av1/encoder/segmentation.h" -#include "aom_dsp/aom_dsp_common.h" -#include "aom_ports/system_state.h" - -#define AQ_C_SEGMENTS 5 -#define DEFAULT_AQ2_SEG 3 // Neutral Q segment -#define AQ_C_STRENGTHS 3 -static const double aq_c_q_adj_factor[AQ_C_STRENGTHS][AQ_C_SEGMENTS] = { - { 1.75, 1.25, 1.05, 1.00, 0.90 }, - { 2.00, 1.50, 1.15, 1.00, 0.85 }, - { 2.50, 1.75, 1.25, 1.00, 0.80 } -}; -static const double aq_c_transitions[AQ_C_STRENGTHS][AQ_C_SEGMENTS] = { - { 0.15, 0.30, 0.55, 2.00, 100.0 }, - { 0.20, 0.40, 0.65, 2.00, 100.0 }, - { 0.25, 0.50, 0.75, 2.00, 100.0 } -}; -static const double aq_c_var_thresholds[AQ_C_STRENGTHS][AQ_C_SEGMENTS] = { - { -4.0, -3.0, -2.0, 100.00, 100.0 }, - { -3.5, -2.5, -1.5, 100.00, 100.0 }, - { -3.0, -2.0, -1.0, 100.00, 100.0 } -}; - -static int get_aq_c_strength(int q_index, aom_bit_depth_t bit_depth) { - // Approximate base quatizer (truncated to int) - const int base_quant = av1_ac_quant_Q3(q_index, 0, bit_depth) / 4; - return (base_quant > 10) + (base_quant > 25); -} - -void av1_setup_in_frame_q_adj(AV1_COMP *cpi) { - AV1_COMMON *const cm = &cpi->common; - struct segmentation *const seg = &cm->seg; - int resolution_change = - cm->prev_frame && (cm->width != cm->prev_frame->width || - cm->height != cm->prev_frame->height); - - // Make SURE use of floating point in this function is safe. - aom_clear_system_state(); - - if (resolution_change) { - memset(cpi->segmentation_map, 0, cm->mi_rows * cm->mi_cols); - av1_clearall_segfeatures(seg); - av1_disable_segmentation(seg); - return; - } - - if (frame_is_intra_only(cm) || cm->error_resilient_mode || - cpi->refresh_alt_ref_frame || - (cpi->refresh_golden_frame && !cpi->rc.is_src_frame_alt_ref)) { - int segment; - const int aq_strength = - get_aq_c_strength(cm->base_qindex, cm->seq_params.bit_depth); - - // Clear down the segment map. - memset(cpi->segmentation_map, DEFAULT_AQ2_SEG, cm->mi_rows * cm->mi_cols); - - av1_clearall_segfeatures(seg); - - // Segmentation only makes sense if the target bits per SB is above a - // threshold. Below this the overheads will usually outweigh any benefit. - if (cpi->rc.sb64_target_rate < 256) { - av1_disable_segmentation(seg); - return; - } - - av1_enable_segmentation(seg); - - // Default segment "Q" feature is disabled so it defaults to the baseline Q. - av1_disable_segfeature(seg, DEFAULT_AQ2_SEG, SEG_LVL_ALT_Q); - - // Use some of the segments for in frame Q adjustment. - for (segment = 0; segment < AQ_C_SEGMENTS; ++segment) { - int qindex_delta; - - if (segment == DEFAULT_AQ2_SEG) continue; - - qindex_delta = av1_compute_qdelta_by_rate( - &cpi->rc, cm->frame_type, cm->base_qindex, - aq_c_q_adj_factor[aq_strength][segment], cm->seq_params.bit_depth); - - // For AQ complexity mode, we dont allow Q0 in a segment if the base - // Q is not 0. Q0 (lossless) implies 4x4 only and in AQ mode 2 a segment - // Q delta is sometimes applied without going back around the rd loop. - // This could lead to an illegal combination of partition size and q. - if ((cm->base_qindex != 0) && ((cm->base_qindex + qindex_delta) == 0)) { - qindex_delta = -cm->base_qindex + 1; - } - if ((cm->base_qindex + qindex_delta) > 0) { - av1_enable_segfeature(seg, segment, SEG_LVL_ALT_Q); - av1_set_segdata(seg, segment, SEG_LVL_ALT_Q, qindex_delta); - } - } - } -} - -#define DEFAULT_LV_THRESH 10.0 -#define MIN_DEFAULT_LV_THRESH 8.0 -// Select a segment for the current block. -// The choice of segment for a block depends on the ratio of the projected -// bits for the block vs a target average and its spatial complexity. -void av1_caq_select_segment(const AV1_COMP *cpi, MACROBLOCK *mb, BLOCK_SIZE bs, - int mi_row, int mi_col, int projected_rate) { - const AV1_COMMON *const cm = &cpi->common; - const int num_planes = av1_num_planes(cm); - - const int mi_offset = mi_row * cm->mi_cols + mi_col; - const int xmis = AOMMIN(cm->mi_cols - mi_col, mi_size_wide[bs]); - const int ymis = AOMMIN(cm->mi_rows - mi_row, mi_size_high[bs]); - int x, y; - int i; - unsigned char segment; - - if (0) { - segment = DEFAULT_AQ2_SEG; - } else { - // Rate depends on fraction of a SB64 in frame (xmis * ymis / bw * bh). - // It is converted to bits << AV1_PROB_COST_SHIFT units. - const int64_t num = (int64_t)(cpi->rc.sb64_target_rate * xmis * ymis) - << AV1_PROB_COST_SHIFT; - const int denom = cm->seq_params.mib_size * cm->seq_params.mib_size; - const int target_rate = (int)(num / denom); - double logvar; - double low_var_thresh; - const int aq_strength = - get_aq_c_strength(cm->base_qindex, cm->seq_params.bit_depth); - - aom_clear_system_state(); - low_var_thresh = - (cpi->oxcf.pass == 2) - ? AOMMAX(exp(cpi->twopass.mb_av_energy), MIN_DEFAULT_LV_THRESH) - : DEFAULT_LV_THRESH; - - av1_setup_src_planes(mb, cpi->source, mi_row, mi_col, num_planes); - logvar = av1_log_block_var(cpi, mb, bs); - - segment = AQ_C_SEGMENTS - 1; // Just in case no break out below. - for (i = 0; i < AQ_C_SEGMENTS; ++i) { - // Test rate against a threshold value and variance against a threshold. - // Increasing segment number (higher variance and complexity) = higher Q. - if ((projected_rate < target_rate * aq_c_transitions[aq_strength][i]) && - (logvar < (low_var_thresh + aq_c_var_thresholds[aq_strength][i]))) { - segment = i; - break; - } - } - } - - // Fill in the entires in the segment map corresponding to this SB64. - for (y = 0; y < ymis; y++) { - for (x = 0; x < xmis; x++) { - cpi->segmentation_map[mi_offset + y * cm->mi_cols + x] = segment; - } - } -} |