| AOMedia AV1 Codec

ratectrl.h
1/*
2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved.
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12#ifndef AOM_AV1_ENCODER_RATECTRL_H_
13#define AOM_AV1_ENCODER_RATECTRL_H_
14
15#include "aom/aom_codec.h"
16#include "aom/aom_integer.h"
17
18#include "aom_ports/mem.h"
19
20#include "av1/common/av1_common_int.h"
21#include "av1/common/blockd.h"
22
23#ifdef __cplusplus
24 extern "C" {
25#endif
26
28
29// Bits Per MB at different Q (Multiplied by 512)
30#define BPER_MB_NORMBITS 9
31
32// Use this macro to turn on/off use of alt-refs in one-pass mode.
33#define USE_ALTREF_FOR_ONE_PASS 1
34
35// Threshold used to define if a KF group is static (e.g. a slide show).
36// Essentially, this means that no frame in the group has more than 1% of MBs
37// that are not marked as coded with 0,0 motion in the first pass.
38#define STATIC_KF_GROUP_THRESH 99
39#define STATIC_KF_GROUP_FLOAT_THRESH 0.99
40
41// The maximum duration of a GF group that is static (e.g. a slide show).
42#define MAX_STATIC_GF_GROUP_LENGTH 250
43
44#define MIN_GF_INTERVAL 4
45#define MAX_GF_INTERVAL 32
46#define FIXED_GF_INTERVAL 16
47#define MAX_GF_LENGTH_LAP 16
48
49#define FIXED_GF_INTERVAL_RT 80
50#define MAX_GF_INTERVAL_RT 160
51
52#define MAX_NUM_GF_INTERVALS 15
53
54#define MAX_ARF_LAYERS 6
55// #define STRICT_RC
56
57#define DEFAULT_KF_BOOST_RT 2300
58#define DEFAULT_GF_BOOST_RT 2000
59
60// A passive rate control strategy for screen content type in real-time mode.
61// When it is turned on, the compression performance is improved by
62// 7.8% (overall_psnr), 5.0% (VMAF) on average. Some clips see gains
63// over 20% on metric.
64// The downside is that it does not guarantee frame size.
65// Since RT mode has a tight restriction on buffer overflow control, we
66// turn it off by default.
67#define RT_PASSIVE_STRATEGY 0
68#define MAX_Q_HISTORY 1000
69
70 typedef struct {
71 int resize_width;
72 int resize_height;
73 uint8_t superres_denom;
74} size_params_type;
75
76 enum {
77 INTER_NORMAL,
78 GF_ARF_LOW,
79 GF_ARF_STD,
80 KF_STD,
81 RATE_FACTOR_LEVELS
82} UENUM1BYTE(RATE_FACTOR_LEVEL);
83
84 enum {
85 KF_UPDATE,
86 LF_UPDATE,
87 GF_UPDATE,
88 ARF_UPDATE,
89 OVERLAY_UPDATE,
90 INTNL_OVERLAY_UPDATE, // Internal Overlay Frame
91 INTNL_ARF_UPDATE, // Internal Altref Frame
92 FRAME_UPDATE_TYPES
93} UENUM1BYTE(FRAME_UPDATE_TYPE);
94
95 enum {
96 REFBUF_RESET, // Clear reference frame buffer
97 REFBUF_UPDATE, // Refresh reference frame buffer
98 REFBUF_STATES
99} UENUM1BYTE(REFBUF_STATE);
100
101 typedef enum {
102 NO_RESIZE = 0,
103 DOWN_THREEFOUR = 1, // From orig to 3/4.
104 DOWN_ONEHALF = 2, // From orig or 3/4 to 1/2.
105 UP_THREEFOUR = -1, // From 1/2 to 3/4.
106 UP_ORIG = -2, // From 1/2 or 3/4 to orig.
107} RESIZE_ACTION;
108
109 typedef enum { ORIG = 0, THREE_QUARTER = 1, ONE_HALF = 2 } RESIZE_STATE;
110
111#define MAX_FIRSTPASS_ANALYSIS_FRAMES 150
112 typedef enum region_types {
113 STABLE_REGION = 0,
114 HIGH_VAR_REGION = 1,
115 SCENECUT_REGION = 2,
116 BLENDING_REGION = 3,
117} REGION_TYPES;
118
119 typedef struct regions {
120 int start;
121 int last;
122 double avg_noise_var;
123 double avg_cor_coeff;
124 double avg_sr_fr_ratio;
125 double avg_intra_err;
126 double avg_coded_err;
127 REGION_TYPES type;
128} REGIONS;
129
134 typedef struct {
135 // Rate targetting variables
136
141 int base_frame_target;
145 int this_frame_target; // Actual frame target after rc adjustment.
146
150 int projected_frame_size;
151
155 int coefficient_size;
156
160 int sb64_target_rate;
161
165 int frames_since_golden;
166
170 int frames_till_gf_update_due;
171
175 int intervals_till_gf_calculate_due;
176
178 int min_gf_interval;
179 int max_gf_interval;
180 int static_scene_max_gf_interval;
185 int frames_to_key;
187 int frames_since_key;
188 int frames_to_fwd_kf;
189 int is_src_frame_alt_ref;
190 int sframe_due;
191
192 int high_source_sad;
193 int high_motion_content_screen_rtc;
194 uint64_t avg_source_sad;
195 uint64_t prev_avg_source_sad;
196 uint64_t frame_source_sad;
197 uint64_t frame_spatial_variance;
198 int static_since_last_scene_change;
199 int last_encoded_size_keyframe;
200 int last_target_size_keyframe;
201 int frames_since_scene_change;
202 int perc_spatial_flat_blocks;
203 int num_col_blscroll_last_tl0;
204 int num_row_blscroll_last_tl0;
205
206 int avg_frame_bandwidth; // Average frame size target for clip
207 int min_frame_bandwidth; // Minimum allocation used for any frame
208 int max_frame_bandwidth; // Maximum burst rate allowed for a frame.
209 int prev_avg_frame_bandwidth;
210
211 int ni_av_qi;
212 int ni_tot_qi;
213
214 int decimation_factor;
215 int decimation_count;
216 int prev_frame_is_dropped;
217 int drop_count_consec;
218 int max_consec_drop;
219 int force_max_q;
220 int postencode_drop;
221
226 unsigned int frame_number_encoded;
227
232 int worst_quality;
236 int best_quality;
237
239
240 // rate control history for last frame(1) and the frame before(2).
241 // -1: overshoot
242 // 1: undershoot
243 // 0: not initialized.
244 int rc_1_frame;
245 int rc_2_frame;
246 int q_1_frame;
247 int q_2_frame;
248
253 int active_worst_quality;
254
256 // Track amount of low motion in scene
257 int avg_frame_low_motion;
258 int cnt_zeromv;
259
260 // signals if number of blocks with motion is high
261 int percent_blocks_with_motion;
262
263 // signals percentage of 16x16 blocks that are inactive, via active_maps
264 int percent_blocks_inactive;
265
266 // Maximum value of source sad across all blocks of frame.
267 uint64_t max_block_source_sad;
268
269 // For dynamic resize, 1 pass cbr.
270 RESIZE_STATE resize_state;
271 int resize_avg_qp;
272 int resize_buffer_underflow;
273 int resize_count;
274
275 // Flag to disable content related qp adjustment.
276 int rtc_external_ratectrl;
277
278 // Stores fast_extra_bits of the current frame.
279 int frame_level_fast_extra_bits;
280
281 double frame_level_rate_correction_factors[RATE_FACTOR_LEVELS];
282
283 int frame_num_last_gf_refresh;
284
285 int prev_coded_width;
286 int prev_coded_height;
287
288 // The ratio used for inter frames in bit estimation.
289 // TODO(yunqing): if golden frame is treated differently (e.g. gf_cbr_boost_
290 // pct > THR), consider to add bit_est_ratio_g for golden frames.
291 int bit_est_ratio;
292
293 // Whether to use a fixed qp for the frame, bypassing internal rate control.
294 // This flag will reset to 0 after every frame.
295 int use_external_qp_one_pass;
297} RATE_CONTROL;
298
302 typedef struct {
303 // Sub-gop level Rate targetting variables
304
308 int64_t gf_group_bits;
309
313 int kf_boost;
314
318 int gfu_boost;
319
323 int gf_intervals[MAX_NUM_GF_INTERVALS];
324
328 int cur_gf_index;
329
331 int num_regions;
332
333 REGIONS regions[MAX_FIRSTPASS_ANALYSIS_FRAMES];
334 int regions_offset; // offset of regions from the last keyframe
335 int frames_till_regions_update;
336
337 int baseline_gf_interval;
338
339 int constrained_gf_group;
340
341 int this_key_frame_forced;
342
343 int next_key_frame_forced;
345
349 int64_t starting_buffer_level;
350
354 int64_t optimal_buffer_level;
355
359 int64_t maximum_buffer_size;
360
364 int arf_q;
365
367 float_t arf_boost_factor;
368
369 int base_layer_qp;
370
371 // Total number of stats used only for kf_boost calculation.
372 int num_stats_used_for_kf_boost;
373
374 // Total number of stats used only for gfu_boost calculation.
375 int num_stats_used_for_gfu_boost;
376
377 // Total number of stats required by gfu_boost calculation.
378 int num_stats_required_for_gfu_boost;
379
380 int enable_scenecut_detection;
381
382 int use_arf_in_this_kf_group;
383
384 int ni_frames;
385
386 double tot_q;
388
392 int last_kf_qindex;
393
397 int avg_frame_qindex[FRAME_TYPES];
398
399#if CONFIG_FPMT_TEST
404 int temp_active_best_quality[MAX_ARF_LAYERS + 1];
405
410 int temp_last_boosted_qindex;
411
416 double temp_avg_q;
417
422 int temp_last_q[FRAME_TYPES];
423
428 int temp_projected_frame_size;
429
434 int64_t temp_total_actual_bits;
435
440 int64_t temp_buffer_level;
441
446 int64_t temp_vbr_bits_off_target;
447
452 int64_t temp_vbr_bits_off_target_fast;
453
458 double temp_rate_correction_factors[RATE_FACTOR_LEVELS];
459
464 int temp_rate_error_estimate;
465
470 int temp_rolling_arf_group_target_bits;
471
476 int temp_rolling_arf_group_actual_bits;
477
482 int64_t temp_bits_left;
483
488 int temp_extend_minq;
489
494 int temp_extend_maxq;
495
496#endif
500 int active_best_quality[MAX_ARF_LAYERS + 1];
501
505 int last_boosted_qindex;
506
510 double avg_q;
511
515 int last_q[FRAME_TYPES];
516
521 double rate_correction_factors[RATE_FACTOR_LEVELS];
522
526 int64_t total_actual_bits;
527
531 int64_t total_target_bits;
532
536 int64_t buffer_level;
537
541 int rate_error_estimate;
542
546 int64_t vbr_bits_off_target;
547
551 int64_t vbr_bits_off_target_fast;
552
557 int64_t bits_off_target;
558
562 int rolling_target_bits;
563
568 int rolling_actual_bits;
569
574 int q_history[MAX_Q_HISTORY];
575} PRIMARY_RATE_CONTROL;
576
578
579 struct AV1_COMP;
580 struct AV1EncoderConfig;
581 struct GF_GROUP;
582
583 void av1_primary_rc_init(const struct AV1EncoderConfig *oxcf,
584 PRIMARY_RATE_CONTROL *p_rc);
585
586 void av1_rc_init(const struct AV1EncoderConfig *oxcf, RATE_CONTROL *rc);
587
588 int av1_estimate_bits_at_q(const struct AV1_COMP *cpi, int q,
589 double correction_factor);
590
591 double av1_convert_qindex_to_q(int qindex, aom_bit_depth_t bit_depth);
592
593// Converts a Q value to a qindex.
594 int av1_convert_q_to_qindex(double q, aom_bit_depth_t bit_depth);
595
596 void av1_rc_init_minq_luts(void);
597
598 int av1_rc_get_default_min_gf_interval(int width, int height, double framerate);
599
600// Generally at the high level, the following flow is expected
601// to be enforced for rate control:
602// First call per frame, one of:
603// av1_get_one_pass_rt_params()
604// av1_get_second_pass_params()
605// depending on the usage to set the rate control encode parameters desired.
606//
607// Then, call encode_frame_to_data_rate() to perform the
608// actual encode. This function will in turn call encode_frame()
609// one or more times, followed by:
610// av1_rc_postencode_update_drop_frame()
611//
612// The majority of rate control parameters are only expected
613// to be set in the av1_get_..._params() functions and
614// updated during the av1_rc_postencode_update...() functions.
615// The only exceptions are av1_rc_drop_frame() and
616// av1_rc_update_rate_correction_factors() functions.
617
618// Functions to set parameters for encoding before the actual
619// encode_frame_to_data_rate() function.
620 struct EncodeFrameInput;
621
622// Post encode update of the rate control parameters based
623// on bytes used
624 void av1_rc_postencode_update(struct AV1_COMP *cpi, uint64_t bytes_used);
625// Post encode update of the rate control parameters for dropped frames
626 void av1_rc_postencode_update_drop_frame(struct AV1_COMP *cpi);
627
642 void av1_rc_update_rate_correction_factors(struct AV1_COMP *cpi,
643 int is_encode_stage, int width,
644 int height);
646
647// Decide if we should drop this frame: For 1-pass CBR.
648// Changes only the decimation count in the rate control structure
649 int av1_rc_drop_frame(struct AV1_COMP *cpi);
650
651// Computes frame size bounds.
652 void av1_rc_compute_frame_size_bounds(const struct AV1_COMP *cpi,
653 int this_frame_target,
654 int *frame_under_shoot_limit,
655 int *frame_over_shoot_limit);
656
658
671 int av1_rc_pick_q_and_bounds(struct AV1_COMP *cpi, int width, int height,
672 int gf_index, int *bottom_index, int *top_index);
673
686 int av1_rc_regulate_q(const struct AV1_COMP *cpi, int target_bits_per_frame,
687 int active_best_quality, int active_worst_quality,
688 int width, int height);
689
691// Estimates bits per mb for a given qindex and correction factor.
692 int av1_rc_bits_per_mb(const struct AV1_COMP *cpi, FRAME_TYPE frame_type,
693 int qindex, double correction_factor,
694 int accurate_estimate);
695
696// Find q_index corresponding to desired_q, within [best_qindex, worst_qindex].
697// To be precise, 'q_index' is the smallest integer, for which the corresponding
698// q >= desired_q.
699// If no such q index is found, returns 'worst_qindex'.
700 int av1_find_qindex(double desired_q, aom_bit_depth_t bit_depth,
701 int best_qindex, int worst_qindex);
702
703// Computes a q delta (in "q index" terms) to get from a starting q value
704// to a target q value
705 int av1_compute_qdelta(const RATE_CONTROL *rc, double qstart, double qtarget,
706 aom_bit_depth_t bit_depth);
707
708// Computes a q delta (in "q index" terms) to get from a starting q value
709// to a value that should equate to the given rate ratio.
710 int av1_compute_qdelta_by_rate(const struct AV1_COMP *cpi,
711 FRAME_TYPE frame_type, int qindex,
712 double rate_target_ratio);
713
714 void av1_rc_update_framerate(struct AV1_COMP *cpi, int width, int height);
715
716 void av1_set_target_rate(struct AV1_COMP *cpi, int width, int height);
717
718 int av1_resize_one_pass_cbr(struct AV1_COMP *cpi);
719
720 void av1_rc_set_frame_target(struct AV1_COMP *cpi, int target, int width,
721 int height);
722
723 void av1_adjust_gf_refresh_qp_one_pass_rt(struct AV1_COMP *cpi);
724
725 void av1_set_rtc_reference_structure_one_layer(struct AV1_COMP *cpi,
726 int gf_update);
727
740 int av1_calc_pframe_target_size_one_pass_vbr(
741 const struct AV1_COMP *const cpi, FRAME_UPDATE_TYPE frame_update_type);
742
753 int av1_calc_iframe_target_size_one_pass_vbr(const struct AV1_COMP *const cpi);
754
766 int av1_calc_pframe_target_size_one_pass_cbr(
767 const struct AV1_COMP *cpi, FRAME_UPDATE_TYPE frame_update_type);
768
779 int av1_calc_iframe_target_size_one_pass_cbr(const struct AV1_COMP *cpi);
780
799 void av1_get_one_pass_rt_params(struct AV1_COMP *cpi,
800 FRAME_TYPE *const frame_type,
801 const struct EncodeFrameInput *frame_input,
802 unsigned int frame_flags);
803
818 int av1_encodedframe_overshoot_cbr(struct AV1_COMP *cpi, int *q);
819
831 int av1_postencode_drop_cbr(struct AV1_COMP *cpi, size_t *size);
832
833#ifdef __cplusplus
834} // extern "C"
835#endif
836
837#endif // AOM_AV1_ENCODER_RATECTRL_H_
aom_codec.h
Describes the codec algorithm interface to applications.
aom_bit_depth_t
enum aom_bit_depth aom_bit_depth_t
Bit depth for codecThis enumeration determines the bit depth of the codec.
av1_calc_pframe_target_size_one_pass_vbr
int av1_calc_pframe_target_size_one_pass_vbr(const struct AV1_COMP *const cpi, FRAME_UPDATE_TYPE frame_update_type)
Calculates how many bits to use for a P frame in one pass vbr.
av1_rc_update_rate_correction_factors
void av1_rc_update_rate_correction_factors(struct AV1_COMP *cpi, int is_encode_stage, int width, int height)
Updates the rate correction factor linking Q to output bits.
Definition ratectrl.c:894
av1_encodedframe_overshoot_cbr
int av1_encodedframe_overshoot_cbr(struct AV1_COMP *cpi, int *q)
Increase q on expected encoder overshoot, for CBR mode.
Definition ratectrl.c:3879
av1_get_one_pass_rt_params
void av1_get_one_pass_rt_params(struct AV1_COMP *cpi, FRAME_TYPE *const frame_type, const struct EncodeFrameInput *frame_input, unsigned int frame_flags)
Setup the rate control parameters for 1 pass real-time mode.
av1_calc_pframe_target_size_one_pass_cbr
int av1_calc_pframe_target_size_one_pass_cbr(const struct AV1_COMP *cpi, FRAME_UPDATE_TYPE frame_update_type)
Calculates how many bits to use for a P frame in one pass cbr.
av1_postencode_drop_cbr
int av1_postencode_drop_cbr(struct AV1_COMP *cpi, size_t *size)
Check if frame should be dropped, for RTC mode.
Definition ratectrl.c:3981
av1_rc_pick_q_and_bounds
int av1_rc_pick_q_and_bounds(struct AV1_COMP *cpi, int width, int height, int gf_index, int *bottom_index, int *top_index)
Picks q and q bounds given the rate control parameters in cpi->rc.
Definition ratectrl.c:2229
av1_calc_iframe_target_size_one_pass_cbr
int av1_calc_iframe_target_size_one_pass_cbr(const struct AV1_COMP *cpi)
Calculates how many bits to use for an i frame in one pass cbr.
av1_calc_iframe_target_size_one_pass_vbr
int av1_calc_iframe_target_size_one_pass_vbr(const struct AV1_COMP *const cpi)
Calculates how many bits to use for an i frame in one pass vbr.
av1_rc_regulate_q
int av1_rc_regulate_q(const struct AV1_COMP *cpi, int target_bits_per_frame, int active_best_quality, int active_worst_quality, int width, int height)
Estimates q to achieve a target bits per frame.
av1_set_rtc_reference_structure_one_layer
void av1_set_rtc_reference_structure_one_layer(AV1_COMP *cpi, int gf_update)
Setup the reference prediction structure for 1 pass real-time.
Definition ratectrl.c:2960
AV1EncoderConfig
Main encoder configuration data structure.
Definition encoder.h:943
AV1_COMP
Top level encoder structure.
Definition encoder.h:2896
EncodeFrameInput
Input frames and last input frame.
Definition encoder.h:3705
GF_GROUP
Data related to the current GF/ARF group and the individual frames within the group.
Definition firstpass.h:339
PRIMARY_RATE_CONTROL
Primary Rate Control parameters and status.
Definition ratectrl.h:302
PRIMARY_RATE_CONTROL::q_history
int q_history[MAX_Q_HISTORY]
Definition ratectrl.h:574
PRIMARY_RATE_CONTROL::gf_intervals
int gf_intervals[MAX_NUM_GF_INTERVALS]
Definition ratectrl.h:323
PRIMARY_RATE_CONTROL::bits_off_target
int64_t bits_off_target
Definition ratectrl.h:557
PRIMARY_RATE_CONTROL::rate_error_estimate
int rate_error_estimate
Definition ratectrl.h:541
PRIMARY_RATE_CONTROL::avg_q
double avg_q
Definition ratectrl.h:510
PRIMARY_RATE_CONTROL::maximum_buffer_size
int64_t maximum_buffer_size
Definition ratectrl.h:359
PRIMARY_RATE_CONTROL::kf_boost
int kf_boost
Definition ratectrl.h:313
PRIMARY_RATE_CONTROL::starting_buffer_level
int64_t starting_buffer_level
Definition ratectrl.h:349
PRIMARY_RATE_CONTROL::last_q
int last_q[FRAME_TYPES]
Definition ratectrl.h:515
PRIMARY_RATE_CONTROL::total_actual_bits
int64_t total_actual_bits
Definition ratectrl.h:526
PRIMARY_RATE_CONTROL::vbr_bits_off_target_fast
int64_t vbr_bits_off_target_fast
Definition ratectrl.h:551
PRIMARY_RATE_CONTROL::rolling_target_bits
int rolling_target_bits
Definition ratectrl.h:562
PRIMARY_RATE_CONTROL::buffer_level
int64_t buffer_level
Definition ratectrl.h:536
PRIMARY_RATE_CONTROL::gfu_boost
int gfu_boost
Definition ratectrl.h:318
PRIMARY_RATE_CONTROL::optimal_buffer_level
int64_t optimal_buffer_level
Definition ratectrl.h:354
PRIMARY_RATE_CONTROL::arf_q
int arf_q
Definition ratectrl.h:364
PRIMARY_RATE_CONTROL::rolling_actual_bits
int rolling_actual_bits
Definition ratectrl.h:568
PRIMARY_RATE_CONTROL::last_boosted_qindex
int last_boosted_qindex
Definition ratectrl.h:505
PRIMARY_RATE_CONTROL::cur_gf_index
int cur_gf_index
Definition ratectrl.h:328
PRIMARY_RATE_CONTROL::rate_correction_factors
double rate_correction_factors[RATE_FACTOR_LEVELS]
Definition ratectrl.h:521
PRIMARY_RATE_CONTROL::total_target_bits
int64_t total_target_bits
Definition ratectrl.h:531
PRIMARY_RATE_CONTROL::last_kf_qindex
int last_kf_qindex
Definition ratectrl.h:392
PRIMARY_RATE_CONTROL::active_best_quality
int active_best_quality[MAX_ARF_LAYERS+1]
Definition ratectrl.h:500
PRIMARY_RATE_CONTROL::gf_group_bits
int64_t gf_group_bits
Definition ratectrl.h:308
PRIMARY_RATE_CONTROL::vbr_bits_off_target
int64_t vbr_bits_off_target
Definition ratectrl.h:546
PRIMARY_RATE_CONTROL::avg_frame_qindex
int avg_frame_qindex[FRAME_TYPES]
Definition ratectrl.h:397
RATE_CONTROL
Rate Control parameters and status.
Definition ratectrl.h:134
RATE_CONTROL::best_quality
int best_quality
Definition ratectrl.h:236
RATE_CONTROL::intervals_till_gf_calculate_due
int intervals_till_gf_calculate_due
Definition ratectrl.h:175
RATE_CONTROL::this_frame_target
int this_frame_target
Definition ratectrl.h:145
RATE_CONTROL::frames_to_key
int frames_to_key
Definition ratectrl.h:185
RATE_CONTROL::base_frame_target
int base_frame_target
Definition ratectrl.h:141
RATE_CONTROL::projected_frame_size
int projected_frame_size
Definition ratectrl.h:150
RATE_CONTROL::worst_quality
int worst_quality
Definition ratectrl.h:232
RATE_CONTROL::sb64_target_rate
int sb64_target_rate
Definition ratectrl.h:160
RATE_CONTROL::coefficient_size
int coefficient_size
Definition ratectrl.h:155
RATE_CONTROL::active_worst_quality
int active_worst_quality
Definition ratectrl.h:253
RATE_CONTROL::frames_since_golden
int frames_since_golden
Definition ratectrl.h:165
RATE_CONTROL::frames_till_gf_update_due
int frames_till_gf_update_due
Definition ratectrl.h:170