Quelle aq_cyclicrefresh.h
Sprache: C
/*
* 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 .
*/
#ifndef AOM_AV1_ENCODER_AQ_CYCLICREFRESH_H_
#define AOM_AV1_ENCODER_AQ_CYCLICREFRESH_H_
#include "av1/common/blockd.h"
#include "av1/encoder/block.h"
#include "av1/encoder/tokenize.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
/*!
* \ brief The stucture of CYCLIC_REFRESH .
* \ ingroup cyclic_refresh
*/
struct CYCLIC_REFRESH {
/*!
* Percentage of blocks per frame that are targeted as candidates
* for cyclic refresh .
*/
int percent_refresh;
/*!
* Active adjustment delta for cyclic refresh for rate control .
*/
int percent_refresh_adjustment;
/*!
* Maximum q - delta as percentage of base q .
*/
int max_qdelta_perc;
/*!
* Superblock starting index for cycling through the frame .
*/
int sb_index;
/*!
* Superblock index cyclic refresh index last frame
*/
int last_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 ( 4 x4 ) blocks that are set for delta - q .
*/
int target_num_seg_blocks;
/*!
* Actual number of ( 4 x4 ) blocks that were applied delta - q ,
* for segment 1 .
*/
int actual_num_seg1_blocks;
/*!
* Actual number of ( 4 x4 ) blocks that were applied delta - q ,
* for segment 2 .
*/
int actual_num_seg2_blocks;
/*!
* RD mult . parameters for segment 1 .
*/
int rdmult;
/*!
* Cyclic refresh map .
*/
int8_t *map;
/*!
* Threshold applied to the projected rate of the coding block ,
* when deciding whether block should be refreshed .
*/
int64_t thresh_rate_sb;
/*!
* Threshold applied to the projected distortion of the coding block ,
* when deciding whether block should be refreshed .
*/
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;
/*!
* Active adjustment of qdelta rate ratio for enhanced rate control
*/
double rate_ratio_qdelta_adjustment;
/*!
* Boost factor for rate target ratio , for segment CR_SEGMENT_ID_BOOST2 .
*/
int rate_boost_fac;
/*!\cond */
int qindex_delta[3 ];
int apply_cyclic_refresh;
int skip_over4x4;
int counter_encode_maxq_scene_change;
int use_block_sad_scene_det;
/*!\endcond */
};
struct AV1_COMP;
typedef struct CYCLIC_REFRESH CYCLIC_REFRESH;
CYCLIC_REFRESH *av1_cyclic_refresh_alloc(int mi_rows, int mi_cols);
void av1_cyclic_refresh_free(CYCLIC_REFRESH *cr);
/*!\brief Estimate the bits, incorporating the delta-q from the segments.
*
* For the just encoded frame , estimate the bits , incorporating the delta - q
* from non - base segment ( s ) . Note this function is called in the postencode
* ( called from rc_update_rate_correction_factors ( ) ) .
*
* \ ingroup cyclic_refresh
* \ callgraph
* \ callergraph
*
* \ param [ in ] cpi Top level encoder structure
* \ param [ in ] correction_factor rate correction factor
*
* \ return Return the estimated bits at given q .
*/
int av1_cyclic_refresh_estimate_bits_at_q(const struct AV1_COMP *cpi,
double correction_factor);
/*!\brief Estimate the bits per mb, for given q = i and delta-q.
*
* 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 .
*
* \ ingroup cyclic_refresh
* \ callgraph
* \ callergraph
*
* \ param [ in ] cpi Top level encoder structure
* \ param [ in ] i q index
* \ param [ in ] correction_factor rate correction factor
*
* \ return Return the estimated bits for q = i and delta - q ( segment 1 ) .
*/
int av1_cyclic_refresh_rc_bits_per_mb(const struct AV1_COMP *cpi, int i,
double correction_factor);
/*!\brief Update segment_id for blocks are skipped.
*
* After encoding a given prediction block , of size bsize at ( mi_row , mi_col ) ,
* check if we should reset the segment_id based on skip_txfm ,
* and update the cyclic_refresh map and segmentation counters .
*
* \ ingroup cyclic_refresh
* \ callgraph
* \ callergraph
*
* \ param [ in ] cpi Top level encoder structure
* \ param [ in ] x Pointer to MACROBLOCK structure
* \ param [ in ] mi_row Row coordinate of the block in a step size of MI_SIZE
* \ param [ in ] mi_col Col coordinate of the block in a step size of MI_SIZE
* \ param [ in ] bsize Block size
* \ param [ in ] dry_run A code indicating whether it is part of the final
* pass for reconstructing the superblock
*
* \ remark Update the \ c mbmi - > segment_id , the \ c cpi - > cyclic_refresh and
* the \ c cm - > cpi - > enc_seg . map .
*/
void av1_cyclic_reset_segment_skip(const struct AV1_COMP *cpi,
MACROBLOCK *const x, int mi_row, int mi_col,
BLOCK_SIZE bsize, RUN_TYPE dry_run);
/*!\brief Update segment_id for block based on mode selected.
*
* Prior to coding a given prediction block , of size bsize at ( mi_row , mi_col ) ,
* check if we should reset the segment_id ( based on mode / motion / skip selected
* for that block ) and update the cyclic_refresh map and segmentation map .
*
* \ ingroup cyclic_refresh
* \ callgraph
* \ callergraph
*
* \ param [ in ] cpi Top level encoder structure
* \ param [ in ] x Pointer to MACROBLOCK structure
* \ param [ in ] mi_row Row coordinate of the block in a step size of MI_SIZE
* \ param [ in ] mi_col Col coordinate of the block in a step size of MI_SIZE
* \ param [ in ] bsize Block size
* \ param [ in ] rate Projected block rate from pickmode
* \ param [ in ] dist Projected block dist from pickmode
* \ param [ in ] skip Skip flag set from picmode
* \ param [ in ] dry_run A code indicating whether it is part of the final
* pass for reconstructing the superblock
*
* \ remark Update the \ c mbmi - > segment_id , the \ c cpi - > cyclic_refresh and
* the \ c cm - > cpi - > enc_seg . map .
*/
void av1_cyclic_refresh_update_segment(const struct AV1_COMP *cpi,
MACROBLOCK *const x, int mi_row,
int mi_col, BLOCK_SIZE bsize,
int64_t rate, int64_t dist, int skip,
RUN_TYPE dry_run);
/*!\brief Initialize counters used for cyclic refresh.
*
* Initializes cyclic refresh counters actual_num_seg1_blocks and
* actual_num_seg2_blocks .
*
* \ ingroup cyclic_refresh
* \ callgraph
* \ callergraph
*
* \ param [ in ] x Pointer to MACROBLOCK structure
*
* \ remark Update the \ c x - > actual_num_seg1_blocks and the
* \ c x - > actual_num_seg2_blocks .
*/
void av1_init_cyclic_refresh_counters(MACROBLOCK *const x);
/*!\brief Accumulate cyclic refresh counters.
*
* Accumulates cyclic refresh counters actual_num_seg1_blocks and
* actual_num_seg2_blocks from MACROBLOCK strcture to CYCLIC_REFRESH strcture .
*
* \ ingroup cyclic_refresh
* \ callgraph
* \ callergraph
*
* \ param [ in ] cyclic_refresh Pointer to CYCLIC_REFRESH structure
* \ param [ in ] x Pointer to MACROBLOCK structure
*
* \ remark Update the \ c cyclic_refresh - > actual_num_seg1_blocks and the
* \ c cyclic_refresh - > actual_num_seg2_blocks .
*/
void av1_accumulate_cyclic_refresh_counters(
CYCLIC_REFRESH *const cyclic_refresh, const MACROBLOCK *const x);
/*!\brief Set golden frame update interval nased on cyclic refresh.
*
* \ ingroup cyclic_refresh
* \ callgraph
* \ callergraph
*
* \ param [ in ] cpi Top level encoder structure
*
* \ remark Returns the interval in \ c cpi - > rc . baseline_gf_interval .
*/
void av1_cyclic_refresh_set_golden_update(struct AV1_COMP *const cpi);
/*!\brief Set the global/frame level parameters for cyclic refresh.
*
* First call to the cyclic refresh , before encoding the frame .
* Sets the flag on whether cyclic refresh should be applied , sets
* the amount / percent of refresh , and the amount of boost applied to
* the two segments ( set by rate_ratio_qdelta and rate_boost_fac ) .
*
* \ ingroup cyclic_refresh
* \ callgraph
* \ callergraph
*
* \ param [ in ] cpi Top level encoder structure
*
* \ remark Updates the \ c cpi - > cyclic_refresh with the settings .
*/
void av1_cyclic_refresh_update_parameters(struct AV1_COMP *const cpi);
/*!\brief Setup the cyclic background refresh.
*
* Set the delta q for the segment ( s ) , and set the segmentation map .
*
* \ ingroup cyclic_refresh
* \ callgraph
* \ callergraph
*
* \ param [ in ] cpi Top level encoder structure
*
* \ remark Updates the \ c cpi - > cyclic_refresh with the cyclic refresh
* parameters and the \ c cm - > seg with the segmentation data .
*/
void av1_cyclic_refresh_setup(struct AV1_COMP *const cpi);
int av1_cyclic_refresh_get_rdmult(const CYCLIC_REFRESH *cr);
int av1_cyclic_refresh_disable_lf_cdef(struct AV1_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;
}
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AV1_ENCODER_AQ_CYCLICREFRESH_H_
Messung V0.5 in Prozent C=91 H=100 G=95
¤ Dauer der Verarbeitung: 0.17 Sekunden
(vorverarbeitet am 2026-08-26)
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*© Formatika GbR, Deutschland
2026-08-25
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