ref: 027ead10dc37c0471ebe17962f83077039b07977
dir: /vp9/encoder/vp9_aq_cyclicrefresh.h/
/* * 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. */ #ifndef VPX_VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_ #define VPX_VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_ #include "vpx/vpx_integer.h" #include "vp9/common/vp9_blockd.h" #include "vp9/encoder/vp9_block.h" #include "vp9/encoder/vp9_skin_detection.h" #ifdef __cplusplus extern "C" { #endif // The segment ids used in cyclic refresh: from base (no boost) to increasing // boost (higher delta-qp). #define CR_SEGMENT_ID_BASE 0 #define CR_SEGMENT_ID_BOOST1 1 #define CR_SEGMENT_ID_BOOST2 2 // Maximum rate target ratio for setting segment delta-qp. #define CR_MAX_RATE_TARGET_RATIO 4.0 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. signed char *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]; int reduce_refresh; double weight_segment; int apply_cyclic_refresh; int counter_encode_maxq_scene_change; int skip_flat_static_blocks; }; struct VP9_COMP; typedef struct CYCLIC_REFRESH CYCLIC_REFRESH; CYCLIC_REFRESH *vp9_cyclic_refresh_alloc(int mi_rows, int mi_cols); void vp9_cyclic_refresh_free(CYCLIC_REFRESH *cr); // Estimate the bits, incorporating the delta-q from segment 1, after encoding // the frame. int vp9_cyclic_refresh_estimate_bits_at_q(const struct VP9_COMP *cpi, double correction_factor); // Estimate the bits per mb, for a given q = i and a corresponding delta-q // (for segment 1), prior to encoding the frame. int vp9_cyclic_refresh_rc_bits_per_mb(const struct VP9_COMP *cpi, int i, double correction_factor); // 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 vp9_cyclic_refresh_update_segment(struct VP9_COMP *const cpi, MODE_INFO *const mi, int mi_row, int mi_col, BLOCK_SIZE bsize, int64_t rate, int64_t dist, int skip, struct macroblock_plane *const p); void vp9_cyclic_refresh_update_sb_postencode(struct VP9_COMP *const cpi, const MODE_INFO *const mi, int mi_row, int mi_col, BLOCK_SIZE bsize); // From the just encoded frame: update the actual number of blocks that were // applied the segment delta q, and the amount of low motion in the frame. // Also check conditions for forcing golden update, or preventing golden // update if the period is up. void vp9_cyclic_refresh_postencode(struct VP9_COMP *const cpi); // Set golden frame update interval, for non-svc 1 pass CBR mode. void vp9_cyclic_refresh_set_golden_update(struct VP9_COMP *const cpi); // Set/update global/frame level refresh parameters. void vp9_cyclic_refresh_update_parameters(struct VP9_COMP *const cpi); // Setup cyclic background refresh: set delta q and segmentation map. void vp9_cyclic_refresh_setup(struct VP9_COMP *const cpi); int vp9_cyclic_refresh_get_rdmult(const CYCLIC_REFRESH *cr); void vp9_cyclic_refresh_reset_resize(struct VP9_COMP *const cpi); static INLINE int cyclic_refresh_segment_id_boosted(int segment_id) { return segment_id == CR_SEGMENT_ID_BOOST1 || segment_id == CR_SEGMENT_ID_BOOST2; } static INLINE int cyclic_refresh_segment_id(int segment_id) { if (segment_id == CR_SEGMENT_ID_BOOST1) return CR_SEGMENT_ID_BOOST1; else if (segment_id == CR_SEGMENT_ID_BOOST2) return CR_SEGMENT_ID_BOOST2; else return CR_SEGMENT_ID_BASE; } void vp9_cyclic_refresh_limit_q(const struct VP9_COMP *cpi, int *q); #ifdef __cplusplus } // extern "C" #endif #endif // VPX_VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_