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/*
* 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"
#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 (4x4) blocks that are set for delta-q.
int target_num_seg_blocks;
// Actual number of (4x4) 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];
double weight_segment;
int apply_cyclic_refresh;
int cnt_zeromv;
double avg_frame_low_motion;
};
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);
// Estimate the bits, incorporating the delta-q from segment 1, after encoding
// the frame.
int av1_cyclic_refresh_estimate_bits_at_q(const struct AV1_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 av1_cyclic_refresh_rc_bits_per_mb(const struct AV1_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 av1_cyclic_refresh_update_segment(const struct 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);
// Update the some stats after encode frame is done.
void av1_cyclic_refresh_postencode(struct AV1_COMP *const cpi);
// Set golden frame update interval, for 1 pass CBR mode.
void av1_cyclic_refresh_set_golden_update(struct AV1_COMP *const cpi);
// Set/update global/frame level refresh parameters.
void av1_cyclic_refresh_update_parameters(struct AV1_COMP *const cpi);
// Setup cyclic background refresh: set delta q and segmentation map.
void av1_cyclic_refresh_setup(struct AV1_COMP *const cpi);
int av1_cyclic_refresh_get_rdmult(const CYCLIC_REFRESH *cr);
void av1_cyclic_refresh_reset_resize(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_
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