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Diffstat (limited to 'vp10/encoder/aq_complexity.c')
| -rw-r--r-- | vp10/encoder/aq_complexity.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/vp10/encoder/aq_complexity.c b/vp10/encoder/aq_complexity.c deleted file mode 100644 index 0de044cf9..000000000 --- a/vp10/encoder/aq_complexity.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * Copyright (c) 2014 The WebM project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. An additional intellectual property rights grant can be found - * in the file PATENTS. All contributing project authors may - * be found in the AUTHORS file in the root of the source tree. - */ - -#include <limits.h> -#include <math.h> - -#include "vp10/encoder/aq_complexity.h" -#include "vp10/encoder/aq_variance.h" -#include "vp10/encoder/encodeframe.h" -#include "vp10/common/seg_common.h" -#include "vp10/encoder/segmentation.h" -#include "vpx_dsp/vpx_dsp_common.h" -#include "vpx_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} }; - -#define DEFAULT_COMPLEXITY 64 - - -static int get_aq_c_strength(int q_index, vpx_bit_depth_t bit_depth) { - // Approximate base quatizer (truncated to int) - const int base_quant = vp10_ac_quant(q_index, 0, bit_depth) / 4; - return (base_quant > 10) + (base_quant > 25); -} - -void vp10_setup_in_frame_q_adj(VP10_COMP *cpi) { - VP10_COMMON *const cm = &cpi->common; - struct segmentation *const seg = &cm->seg; - - // Make SURE use of floating point in this function is safe. - vpx_clear_system_state(); - - if (cm->frame_type == KEY_FRAME || - 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->bit_depth); - - // Clear down the segment map. - memset(cpi->segmentation_map, DEFAULT_AQ2_SEG, cm->mi_rows * cm->mi_cols); - - vp10_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) { - vp10_disable_segmentation(seg); - return; - } - - vp10_enable_segmentation(seg); - - // Select delta coding method. - seg->abs_delta = SEGMENT_DELTADATA; - - // Default segment "Q" feature is disabled so it defaults to the baseline Q. - vp10_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 = - vp10_compute_qdelta_by_rate(&cpi->rc, cm->frame_type, cm->base_qindex, - aq_c_q_adj_factor[aq_strength][segment], - cm->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) { - vp10_enable_segfeature(seg, segment, SEG_LVL_ALT_Q); - vp10_set_segdata(seg, segment, SEG_LVL_ALT_Q, qindex_delta); - } - } - } -} - -#define DEFAULT_LV_THRESH 10.0 -#define MIN_DEFAULT_LV_THRESH 8.0 -#define VAR_STRENGTH_STEP 0.25 -// 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 vp10_caq_select_segment(VP10_COMP *cpi, MACROBLOCK *mb, BLOCK_SIZE bs, - int mi_row, int mi_col, int projected_rate) { - VP10_COMMON *const cm = &cpi->common; - - const int mi_offset = mi_row * cm->mi_cols + mi_col; - const int bw = num_8x8_blocks_wide_lookup[BLOCK_64X64]; - const int bh = num_8x8_blocks_high_lookup[BLOCK_64X64]; - const int xmis = VPXMIN(cm->mi_cols - mi_col, num_8x8_blocks_wide_lookup[bs]); - const int ymis = VPXMIN(cm->mi_rows - mi_row, num_8x8_blocks_high_lookup[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 * 256 units. - const int target_rate = (cpi->rc.sb64_target_rate * xmis * ymis * 256) / - (bw * bh); - double logvar; - double low_var_thresh; - const int aq_strength = get_aq_c_strength(cm->base_qindex, cm->bit_depth); - - vpx_clear_system_state(); - low_var_thresh = (cpi->oxcf.pass == 2) - ? VPXMAX(cpi->twopass.mb_av_energy, MIN_DEFAULT_LV_THRESH) - : DEFAULT_LV_THRESH; - - vp10_setup_src_planes(mb, cpi->Source, mi_row, mi_col); - logvar = vp10_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; - } - } -} |