diff options
Diffstat (limited to 'third_party/aom/av1/encoder/aq_cyclicrefresh.c')
| -rw-r--r-- | third_party/aom/av1/encoder/aq_cyclicrefresh.c | 580 |
1 files changed, 0 insertions, 580 deletions
diff --git a/third_party/aom/av1/encoder/aq_cyclicrefresh.c b/third_party/aom/av1/encoder/aq_cyclicrefresh.c deleted file mode 100644 index f532d48da..000000000 --- a/third_party/aom/av1/encoder/aq_cyclicrefresh.c +++ /dev/null @@ -1,580 +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/common/seg_common.h" -#include "av1/encoder/aq_cyclicrefresh.h" -#include "av1/encoder/ratectrl.h" -#include "av1/encoder/segmentation.h" -#include "aom_dsp/aom_dsp_common.h" -#include "aom_ports/system_state.h" - -struct CYCLIC_REFRESH { - // Percentage of blocks per frame that are targeted as candidates - // for cyclic refresh. - int percent_refresh; - // Maximum q-delta as percentage of base q. - int max_qdelta_perc; - // Superblock starting index for cycling through the frame. - int sb_index; - // Controls how long block will need to wait to be refreshed again, in - // excess of the cycle time, i.e., in the case of all zero motion, block - // will be refreshed every (100/percent_refresh + time_for_refresh) frames. - int time_for_refresh; - // Target number of (8x8) blocks that are set for delta-q. - int target_num_seg_blocks; - // Actual number of (8x8) blocks that were applied delta-q. - int actual_num_seg1_blocks; - int actual_num_seg2_blocks; - // RD mult. parameters for segment 1. - int rdmult; - // Cyclic refresh map. - int8_t *map; - // Map of the last q a block was coded at. - uint8_t *last_coded_q_map; - // Thresholds applied to the projected rate/distortion of the coding block, - // when deciding whether block should be refreshed. - int64_t thresh_rate_sb; - int64_t thresh_dist_sb; - // Threshold applied to the motion vector (in units of 1/8 pel) of the - // coding block, when deciding whether block should be refreshed. - int16_t motion_thresh; - // Rate target ratio to set q delta. - double rate_ratio_qdelta; - // Boost factor for rate target ratio, for segment CR_SEGMENT_ID_BOOST2. - int rate_boost_fac; - double low_content_avg; - int qindex_delta[3]; -}; - -CYCLIC_REFRESH *av1_cyclic_refresh_alloc(int mi_rows, int mi_cols) { - size_t last_coded_q_map_size; - CYCLIC_REFRESH *const cr = aom_calloc(1, sizeof(*cr)); - if (cr == NULL) return NULL; - - cr->map = aom_calloc(mi_rows * mi_cols, sizeof(*cr->map)); - if (cr->map == NULL) { - av1_cyclic_refresh_free(cr); - return NULL; - } - last_coded_q_map_size = mi_rows * mi_cols * sizeof(*cr->last_coded_q_map); - cr->last_coded_q_map = aom_malloc(last_coded_q_map_size); - if (cr->last_coded_q_map == NULL) { - av1_cyclic_refresh_free(cr); - return NULL; - } - assert(MAXQ <= 255); - memset(cr->last_coded_q_map, MAXQ, last_coded_q_map_size); - - return cr; -} - -void av1_cyclic_refresh_free(CYCLIC_REFRESH *cr) { - if (cr != NULL) { - aom_free(cr->map); - aom_free(cr->last_coded_q_map); - aom_free(cr); - } -} - -// Check if we should turn off cyclic refresh based on bitrate condition. -static int apply_cyclic_refresh_bitrate(const AV1_COMMON *cm, - const RATE_CONTROL *rc) { - // Turn off cyclic refresh if bits available per frame is not sufficiently - // larger than bit cost of segmentation. Segment map bit cost should scale - // with number of seg blocks, so compare available bits to number of blocks. - // Average bits available per frame = avg_frame_bandwidth - // Number of (8x8) blocks in frame = mi_rows * mi_cols; - const float factor = 0.25; - const int number_blocks = cm->mi_rows * cm->mi_cols; - // The condition below corresponds to turning off at target bitrates: - // (at 30fps), ~12kbps for CIF, 36kbps for VGA, 100kps for HD/720p. - // Also turn off at very small frame sizes, to avoid too large fraction of - // superblocks to be refreshed per frame. Threshold below is less than QCIF. - if (rc->avg_frame_bandwidth < factor * number_blocks || - number_blocks / 64 < 5) - return 0; - else - return 1; -} - -// Check if this coding block, of size bsize, should be considered for refresh -// (lower-qp coding). Decision can be based on various factors, such as -// size of the coding block (i.e., below min_block size rejected), coding -// mode, and rate/distortion. -static int candidate_refresh_aq(const CYCLIC_REFRESH *cr, - const MB_MODE_INFO *mbmi, int64_t rate, - int64_t dist, int bsize) { - MV mv = mbmi->mv[0].as_mv; - // Reject the block for lower-qp coding if projected distortion - // is above the threshold, and any of the following is true: - // 1) mode uses large mv - // 2) mode is an intra-mode - // Otherwise accept for refresh. - if (dist > cr->thresh_dist_sb && - (mv.row > cr->motion_thresh || mv.row < -cr->motion_thresh || - mv.col > cr->motion_thresh || mv.col < -cr->motion_thresh || - !is_inter_block(mbmi))) - return CR_SEGMENT_ID_BASE; - else if (bsize >= BLOCK_16X16 && rate < cr->thresh_rate_sb && - is_inter_block(mbmi) && mbmi->mv[0].as_int == 0 && - cr->rate_boost_fac > 10) - // More aggressive delta-q for bigger blocks with zero motion. - return CR_SEGMENT_ID_BOOST2; - else - return CR_SEGMENT_ID_BOOST1; -} - -// Compute delta-q for the segment. -static int compute_deltaq(const AV1_COMP *cpi, int q, double rate_factor) { - const CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; - const RATE_CONTROL *const rc = &cpi->rc; - int deltaq = - av1_compute_qdelta_by_rate(rc, cpi->common.frame_type, q, rate_factor, - cpi->common.seq_params.bit_depth); - if ((-deltaq) > cr->max_qdelta_perc * q / 100) { - deltaq = -cr->max_qdelta_perc * q / 100; - } - return deltaq; -} - -// For the just encoded frame, estimate the bits, incorporating the delta-q -// from non-base segment. For now ignore effect of multiple segments -// (with different delta-q). Note this function is called in the postencode -// (called from rc_update_rate_correction_factors()). -int av1_cyclic_refresh_estimate_bits_at_q(const AV1_COMP *cpi, - double correction_factor) { - const AV1_COMMON *const cm = &cpi->common; - const CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; - int estimated_bits; - int mbs = cm->MBs; - int num8x8bl = mbs << 2; - // Weight for non-base segments: use actual number of blocks refreshed in - // previous/just encoded frame. Note number of blocks here is in 8x8 units. - double weight_segment1 = (double)cr->actual_num_seg1_blocks / num8x8bl; - double weight_segment2 = (double)cr->actual_num_seg2_blocks / num8x8bl; - // Take segment weighted average for estimated bits. - estimated_bits = - (int)((1.0 - weight_segment1 - weight_segment2) * - av1_estimate_bits_at_q(cm->frame_type, cm->base_qindex, mbs, - correction_factor, - cm->seq_params.bit_depth) + - weight_segment1 * av1_estimate_bits_at_q( - cm->frame_type, - cm->base_qindex + cr->qindex_delta[1], mbs, - correction_factor, cm->seq_params.bit_depth) + - weight_segment2 * av1_estimate_bits_at_q( - cm->frame_type, - cm->base_qindex + cr->qindex_delta[2], mbs, - correction_factor, cm->seq_params.bit_depth)); - return estimated_bits; -} - -// Prior to encoding the frame, estimate the bits per mb, for a given q = i and -// a corresponding delta-q (for segment 1). This function is called in the -// rc_regulate_q() to set the base qp index. -// Note: the segment map is set to either 0/CR_SEGMENT_ID_BASE (no refresh) or -// to 1/CR_SEGMENT_ID_BOOST1 (refresh) for each superblock, prior to encoding. -int av1_cyclic_refresh_rc_bits_per_mb(const AV1_COMP *cpi, int i, - double correction_factor) { - const AV1_COMMON *const cm = &cpi->common; - CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; - int bits_per_mb; - int num8x8bl = cm->MBs << 2; - // Weight for segment prior to encoding: take the average of the target - // number for the frame to be encoded and the actual from the previous frame. - double weight_segment = - (double)((cr->target_num_seg_blocks + cr->actual_num_seg1_blocks + - cr->actual_num_seg2_blocks) >> - 1) / - num8x8bl; - // Compute delta-q corresponding to qindex i. - int deltaq = compute_deltaq(cpi, i, cr->rate_ratio_qdelta); - // Take segment weighted average for bits per mb. - bits_per_mb = - (int)((1.0 - weight_segment) * - av1_rc_bits_per_mb(cm->frame_type, i, correction_factor, - cm->seq_params.bit_depth) + - weight_segment * av1_rc_bits_per_mb(cm->frame_type, i + deltaq, - correction_factor, - cm->seq_params.bit_depth)); - return bits_per_mb; -} - -// Prior to coding a given prediction block, of size bsize at (mi_row, mi_col), -// check if we should reset the segment_id, and update the cyclic_refresh map -// and segmentation map. -void av1_cyclic_refresh_update_segment(const AV1_COMP *cpi, - MB_MODE_INFO *const mbmi, int mi_row, - int mi_col, BLOCK_SIZE bsize, - int64_t rate, int64_t dist, int skip) { - const AV1_COMMON *const cm = &cpi->common; - CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; - const int bw = mi_size_wide[bsize]; - const int bh = mi_size_high[bsize]; - const int xmis = AOMMIN(cm->mi_cols - mi_col, bw); - const int ymis = AOMMIN(cm->mi_rows - mi_row, bh); - const int block_index = mi_row * cm->mi_cols + mi_col; - const int refresh_this_block = - candidate_refresh_aq(cr, mbmi, rate, dist, bsize); - // Default is to not update the refresh map. - int new_map_value = cr->map[block_index]; - int x = 0; - int y = 0; - - // If this block is labeled for refresh, check if we should reset the - // segment_id. - if (cyclic_refresh_segment_id_boosted(mbmi->segment_id)) { - mbmi->segment_id = refresh_this_block; - // Reset segment_id if will be skipped. - if (skip) mbmi->segment_id = CR_SEGMENT_ID_BASE; - } - - // Update the cyclic refresh map, to be used for setting segmentation map - // for the next frame. If the block will be refreshed this frame, mark it - // as clean. The magnitude of the -ve influences how long before we consider - // it for refresh again. - if (cyclic_refresh_segment_id_boosted(mbmi->segment_id)) { - new_map_value = -cr->time_for_refresh; - } else if (refresh_this_block) { - // Else if it is accepted as candidate for refresh, and has not already - // been refreshed (marked as 1) then mark it as a candidate for cleanup - // for future time (marked as 0), otherwise don't update it. - if (cr->map[block_index] == 1) new_map_value = 0; - } else { - // Leave it marked as block that is not candidate for refresh. - new_map_value = 1; - } - - // Update entries in the cyclic refresh map with new_map_value, and - // copy mbmi->segment_id into global segmentation map. - for (y = 0; y < ymis; y++) - for (x = 0; x < xmis; x++) { - int map_offset = block_index + y * cm->mi_cols + x; - cr->map[map_offset] = new_map_value; - cpi->segmentation_map[map_offset] = mbmi->segment_id; - // Inter skip blocks were clearly not coded at the current qindex, so - // don't update the map for them. For cases where motion is non-zero or - // the reference frame isn't the previous frame, the previous value in - // the map for this spatial location is not entirely correct. - if ((!is_inter_block(mbmi) || !skip) && - mbmi->segment_id <= CR_SEGMENT_ID_BOOST2) { - cr->last_coded_q_map[map_offset] = clamp( - cm->base_qindex + cr->qindex_delta[mbmi->segment_id], 0, MAXQ); - } else if (is_inter_block(mbmi) && skip && - mbmi->segment_id <= CR_SEGMENT_ID_BOOST2) { - cr->last_coded_q_map[map_offset] = - AOMMIN(clamp(cm->base_qindex + cr->qindex_delta[mbmi->segment_id], - 0, MAXQ), - cr->last_coded_q_map[map_offset]); - } - } -} - -// Update the actual number of blocks that were applied the segment delta q. -void av1_cyclic_refresh_postencode(AV1_COMP *const cpi) { - AV1_COMMON *const cm = &cpi->common; - CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; - unsigned char *const seg_map = cpi->segmentation_map; - int mi_row, mi_col; - cr->actual_num_seg1_blocks = 0; - cr->actual_num_seg2_blocks = 0; - for (mi_row = 0; mi_row < cm->mi_rows; mi_row++) - for (mi_col = 0; mi_col < cm->mi_cols; mi_col++) { - if (cyclic_refresh_segment_id(seg_map[mi_row * cm->mi_cols + mi_col]) == - CR_SEGMENT_ID_BOOST1) - cr->actual_num_seg1_blocks++; - else if (cyclic_refresh_segment_id( - seg_map[mi_row * cm->mi_cols + mi_col]) == - CR_SEGMENT_ID_BOOST2) - cr->actual_num_seg2_blocks++; - } -} - -// Set golden frame update interval, for 1 pass CBR mode. -void av1_cyclic_refresh_set_golden_update(AV1_COMP *const cpi) { - RATE_CONTROL *const rc = &cpi->rc; - CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; - // Set minimum gf_interval for GF update to a multiple (== 2) of refresh - // period. Depending on past encoding stats, GF flag may be reset and update - // may not occur until next baseline_gf_interval. - if (cr->percent_refresh > 0) - rc->baseline_gf_interval = 4 * (100 / cr->percent_refresh); - else - rc->baseline_gf_interval = 40; -} - -// Update some encoding stats (from the just encoded frame). If this frame's -// background has high motion, refresh the golden frame. Otherwise, if the -// golden reference is to be updated check if we should NOT update the golden -// ref. -void av1_cyclic_refresh_check_golden_update(AV1_COMP *const cpi) { - AV1_COMMON *const cm = &cpi->common; - CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; - int mi_row, mi_col; - double fraction_low = 0.0; - int low_content_frame = 0; - - MB_MODE_INFO **mi; - RATE_CONTROL *const rc = &cpi->rc; - const int rows = cm->mi_rows, cols = cm->mi_cols; - int cnt1 = 0, cnt2 = 0; - int force_gf_refresh = 0; - - for (mi_row = 0; mi_row < rows; mi_row++) { - mi = cm->mi_grid_visible + mi_row * cm->mi_stride; - - for (mi_col = 0; mi_col < cols; mi_col++) { - int16_t abs_mvr = mi[0]->mv[0].as_mv.row >= 0 - ? mi[0]->mv[0].as_mv.row - : -1 * mi[0]->mv[0].as_mv.row; - int16_t abs_mvc = mi[0]->mv[0].as_mv.col >= 0 - ? mi[0]->mv[0].as_mv.col - : -1 * mi[0]->mv[0].as_mv.col; - - // Calculate the motion of the background. - if (abs_mvr <= 16 && abs_mvc <= 16) { - cnt1++; - if (abs_mvr == 0 && abs_mvc == 0) cnt2++; - } - mi++; - - // Accumulate low_content_frame. - if (cr->map[mi_row * cols + mi_col] < 1) low_content_frame++; - } - } - - // For video conference clips, if the background has high motion in current - // frame because of the camera movement, set this frame as the golden frame. - // Use 70% and 5% as the thresholds for golden frame refreshing. - if (cnt1 * 10 > (70 * rows * cols) && cnt2 * 20 < cnt1) { - av1_cyclic_refresh_set_golden_update(cpi); - rc->frames_till_gf_update_due = rc->baseline_gf_interval; - - if (rc->frames_till_gf_update_due > rc->frames_to_key) - rc->frames_till_gf_update_due = rc->frames_to_key; - cpi->refresh_golden_frame = 1; - force_gf_refresh = 1; - } - - fraction_low = (double)low_content_frame / (rows * cols); - // Update average. - cr->low_content_avg = (fraction_low + 3 * cr->low_content_avg) / 4; - if (!force_gf_refresh && cpi->refresh_golden_frame == 1) { - // Don't update golden reference if the amount of low_content for the - // current encoded frame is small, or if the recursive average of the - // low_content over the update interval window falls below threshold. - if (fraction_low < 0.8 || cr->low_content_avg < 0.7) - cpi->refresh_golden_frame = 0; - // Reset for next internal. - cr->low_content_avg = fraction_low; - } -} - -// Update the segmentation map, and related quantities: cyclic refresh map, -// refresh sb_index, and target number of blocks to be refreshed. -// The map is set to either 0/CR_SEGMENT_ID_BASE (no refresh) or to -// 1/CR_SEGMENT_ID_BOOST1 (refresh) for each superblock. -// Blocks labeled as BOOST1 may later get set to BOOST2 (during the -// encoding of the superblock). -static void cyclic_refresh_update_map(AV1_COMP *const cpi) { - AV1_COMMON *const cm = &cpi->common; - CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; - unsigned char *const seg_map = cpi->segmentation_map; - int i, block_count, bl_index, sb_rows, sb_cols, sbs_in_frame; - int xmis, ymis, x, y; - memset(seg_map, CR_SEGMENT_ID_BASE, cm->mi_rows * cm->mi_cols); - sb_cols = - (cm->mi_cols + cm->seq_params.mib_size - 1) / cm->seq_params.mib_size; - sb_rows = - (cm->mi_rows + cm->seq_params.mib_size - 1) / cm->seq_params.mib_size; - sbs_in_frame = sb_cols * sb_rows; - // Number of target blocks to get the q delta (segment 1). - block_count = cr->percent_refresh * cm->mi_rows * cm->mi_cols / 100; - // Set the segmentation map: cycle through the superblocks, starting at - // cr->mb_index, and stopping when either block_count blocks have been found - // to be refreshed, or we have passed through whole frame. - if (cr->sb_index >= sbs_in_frame) cr->sb_index = 0; - assert(cr->sb_index < sbs_in_frame); - i = cr->sb_index; - cr->target_num_seg_blocks = 0; - do { - int sum_map = 0; - // Get the mi_row/mi_col corresponding to superblock index i. - int sb_row_index = (i / sb_cols); - int sb_col_index = i - sb_row_index * sb_cols; - int mi_row = sb_row_index * cm->seq_params.mib_size; - int mi_col = sb_col_index * cm->seq_params.mib_size; - int qindex_thresh = - cpi->oxcf.content == AOM_CONTENT_SCREEN - ? av1_get_qindex(&cm->seg, CR_SEGMENT_ID_BOOST2, cm->base_qindex) - : 0; - assert(mi_row >= 0 && mi_row < cm->mi_rows); - assert(mi_col >= 0 && mi_col < cm->mi_cols); - bl_index = mi_row * cm->mi_cols + mi_col; - // Loop through all MI blocks in superblock and update map. - xmis = AOMMIN(cm->mi_cols - mi_col, cm->seq_params.mib_size); - ymis = AOMMIN(cm->mi_rows - mi_row, cm->seq_params.mib_size); - for (y = 0; y < ymis; y++) { - for (x = 0; x < xmis; x++) { - const int bl_index2 = bl_index + y * cm->mi_cols + x; - // If the block is as a candidate for clean up then mark it - // for possible boost/refresh (segment 1). The segment id may get - // reset to 0 later if block gets coded anything other than GLOBALMV. - if (cr->map[bl_index2] == 0) { - if (cr->last_coded_q_map[bl_index2] > qindex_thresh) sum_map++; - } else if (cr->map[bl_index2] < 0) { - cr->map[bl_index2]++; - } - } - } - // Enforce constant segment over superblock. - // If segment is at least half of superblock, set to 1. - if (sum_map >= xmis * ymis / 2) { - for (y = 0; y < ymis; y++) - for (x = 0; x < xmis; x++) { - seg_map[bl_index + y * cm->mi_cols + x] = CR_SEGMENT_ID_BOOST1; - } - cr->target_num_seg_blocks += xmis * ymis; - } - i++; - if (i == sbs_in_frame) { - i = 0; - } - } while (cr->target_num_seg_blocks < block_count && i != cr->sb_index); - cr->sb_index = i; -} - -// Set cyclic refresh parameters. -void av1_cyclic_refresh_update_parameters(AV1_COMP *const cpi) { - const RATE_CONTROL *const rc = &cpi->rc; - const AV1_COMMON *const cm = &cpi->common; - CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; - cr->percent_refresh = 10; - cr->max_qdelta_perc = 50; - cr->time_for_refresh = 0; - // Use larger delta-qp (increase rate_ratio_qdelta) for first few (~4) - // periods of the refresh cycle, after a key frame. - if (rc->frames_since_key < 4 * cr->percent_refresh) - cr->rate_ratio_qdelta = 3.0; - else - cr->rate_ratio_qdelta = 2.0; - // Adjust some parameters for low resolutions at low bitrates. - if (cm->width <= 352 && cm->height <= 288 && rc->avg_frame_bandwidth < 3400) { - cr->motion_thresh = 4; - cr->rate_boost_fac = 10; - } else { - cr->motion_thresh = 32; - cr->rate_boost_fac = 17; - } -} - -// Setup cyclic background refresh: set delta q and segmentation map. -void av1_cyclic_refresh_setup(AV1_COMP *const cpi) { - AV1_COMMON *const cm = &cpi->common; - const RATE_CONTROL *const rc = &cpi->rc; - CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; - struct segmentation *const seg = &cm->seg; - const int apply_cyclic_refresh = apply_cyclic_refresh_bitrate(cm, rc); - int resolution_change = - cm->prev_frame && (cm->width != cm->prev_frame->width || - cm->height != cm->prev_frame->height); - if (resolution_change) { - memset(cpi->segmentation_map, 0, cm->mi_rows * cm->mi_cols); - av1_clearall_segfeatures(seg); - aom_clear_system_state(); - av1_disable_segmentation(seg); - return; - } - if (cm->current_video_frame == 0) cr->low_content_avg = 0.0; - // Don't apply refresh on key frame or enhancement layer frames. - if (!apply_cyclic_refresh || cm->frame_type == KEY_FRAME) { - // Set segmentation map to 0 and disable. - unsigned char *const seg_map = cpi->segmentation_map; - memset(seg_map, 0, cm->mi_rows * cm->mi_cols); - av1_disable_segmentation(&cm->seg); - if (cm->frame_type == KEY_FRAME) { - memset(cr->last_coded_q_map, MAXQ, - cm->mi_rows * cm->mi_cols * sizeof(*cr->last_coded_q_map)); - cr->sb_index = 0; - } - return; - } else { - int qindex_delta = 0; - int qindex2; - const double q = - av1_convert_qindex_to_q(cm->base_qindex, cm->seq_params.bit_depth); - aom_clear_system_state(); - // Set rate threshold to some multiple (set to 2 for now) of the target - // rate (target is given by sb64_target_rate and scaled by 256). - cr->thresh_rate_sb = ((int64_t)(rc->sb64_target_rate) << 8) << 2; - // Distortion threshold, quadratic in Q, scale factor to be adjusted. - // q will not exceed 457, so (q * q) is within 32bit; see: - // av1_convert_qindex_to_q(), av1_ac_quant(), ac_qlookup*[]. - cr->thresh_dist_sb = ((int64_t)(q * q)) << 2; - - // Set up segmentation. - // Clear down the segment map. - av1_enable_segmentation(&cm->seg); - av1_clearall_segfeatures(seg); - - // Note: setting temporal_update has no effect, as the seg-map coding method - // (temporal or spatial) is determined in - // av1_choose_segmap_coding_method(), - // based on the coding cost of each method. For error_resilient mode on the - // last_frame_seg_map is set to 0, so if temporal coding is used, it is - // relative to 0 previous map. - // seg->temporal_update = 0; - - // Segment BASE "Q" feature is disabled so it defaults to the baseline Q. - av1_disable_segfeature(seg, CR_SEGMENT_ID_BASE, SEG_LVL_ALT_Q); - // Use segment BOOST1 for in-frame Q adjustment. - av1_enable_segfeature(seg, CR_SEGMENT_ID_BOOST1, SEG_LVL_ALT_Q); - // Use segment BOOST2 for more aggressive in-frame Q adjustment. - av1_enable_segfeature(seg, CR_SEGMENT_ID_BOOST2, SEG_LVL_ALT_Q); - - // Set the q delta for segment BOOST1. - qindex_delta = compute_deltaq(cpi, cm->base_qindex, cr->rate_ratio_qdelta); - cr->qindex_delta[1] = qindex_delta; - - // Compute rd-mult for segment BOOST1. - qindex2 = clamp(cm->base_qindex + cm->y_dc_delta_q + qindex_delta, 0, MAXQ); - - cr->rdmult = av1_compute_rd_mult(cpi, qindex2); - - av1_set_segdata(seg, CR_SEGMENT_ID_BOOST1, SEG_LVL_ALT_Q, qindex_delta); - - // Set a more aggressive (higher) q delta for segment BOOST2. - qindex_delta = compute_deltaq( - cpi, cm->base_qindex, - AOMMIN(CR_MAX_RATE_TARGET_RATIO, - 0.1 * cr->rate_boost_fac * cr->rate_ratio_qdelta)); - cr->qindex_delta[2] = qindex_delta; - av1_set_segdata(seg, CR_SEGMENT_ID_BOOST2, SEG_LVL_ALT_Q, qindex_delta); - - // Update the segmentation and refresh map. - cyclic_refresh_update_map(cpi); - } -} - -int av1_cyclic_refresh_get_rdmult(const CYCLIC_REFRESH *cr) { - return cr->rdmult; -} - -void av1_cyclic_refresh_reset_resize(AV1_COMP *const cpi) { - const AV1_COMMON *const cm = &cpi->common; - CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; - memset(cr->map, 0, cm->mi_rows * cm->mi_cols); - cr->sb_index = 0; - cpi->refresh_golden_frame = 1; -} |