AOMedia AV1 Codec
svc_layercontext.h
1 /*
2  * Copyright (c) 2019, Alliance for Open Media. All Rights Reserved.
3  *
4  * Use of this source code is governed by a BSD-style license
5  * that can be found in the LICENSE file in the root of the source
6  * tree. An additional intellectual property rights grant can be found
7  * in the file PATENTS. All contributing project authors may
8  * be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef AOM_AV1_ENCODER_SVC_LAYERCONTEXT_H_
12 #define AOM_AV1_ENCODER_SVC_LAYERCONTEXT_H_
13 
14 #include "av1/encoder/aq_cyclicrefresh.h"
15 #include "av1/encoder/encoder.h"
16 #include "av1/encoder/ratectrl.h"
17 
18 #ifdef __cplusplus
19 extern "C" {
20 #endif
21 
26 typedef struct {
29  int framerate_factor;
30  int64_t layer_target_bitrate;
31  int scaling_factor_num;
32  int scaling_factor_den;
33  int64_t target_bandwidth;
34  int64_t spatial_layer_target_bandwidth;
35  double framerate;
36  int avg_frame_size;
37  int max_q;
38  int min_q;
39  int frames_from_key_frame;
45  int sb_index;
49  int8_t *map;
53  uint8_t *last_coded_q_map;
54 
59 
68 
72  uint8_t speed;
76  unsigned char group_index;
86 
91 typedef struct SVC {
93  int spatial_layer_id;
94  int temporal_layer_id;
95  int number_spatial_layers;
96  int number_temporal_layers;
97  int set_ref_frame_config;
98  int non_reference_frame;
99  int use_flexible_mode;
100  int ksvc_fixed_mode;
107  int reference[INTER_REFS_PER_FRAME];
109  int ref_idx[INTER_REFS_PER_FRAME];
110  int refresh[REF_FRAMES];
111  double base_framerate;
112  unsigned int current_superframe;
113  unsigned int buffer_time_index[REF_FRAMES];
114  unsigned char buffer_spatial_layer[REF_FRAMES];
115  int skip_mvsearch_last;
116  int skip_mvsearch_gf;
117  int spatial_layer_fb[REF_FRAMES];
118  int temporal_layer_fb[REF_FRAMES];
119  int num_encoded_top_layer;
120  int first_layer_denoise;
127 
132 
138 
143 } SVC;
144 
145 struct AV1_COMP;
146 
157 void av1_init_layer_context(struct AV1_COMP *const cpi);
158 
170 void av1_update_layer_context_change_config(struct AV1_COMP *const cpi,
171  const int64_t target_bandwidth);
172 
185 void av1_update_temporal_layer_framerate(struct AV1_COMP *const cpi);
186 
198 void av1_restore_layer_context(struct AV1_COMP *const cpi);
199 
210 void av1_save_layer_context(struct AV1_COMP *const cpi);
211 
222 void av1_free_svc_cyclic_refresh(struct AV1_COMP *const cpi);
223 
235 void av1_svc_reset_temporal_layers(struct AV1_COMP *const cpi, int is_key);
236 
247 void av1_one_pass_cbr_svc_start_layer(struct AV1_COMP *const cpi);
248 
259 int av1_svc_primary_ref_frame(const struct AV1_COMP *const cpi);
260 
273 void av1_get_layer_resolution(const int width_org, const int height_org,
274  const int num, const int den, int *width_out,
275  int *height_out);
276 
277 void av1_set_svc_fixed_mode(struct AV1_COMP *const cpi);
278 
279 #ifdef __cplusplus
280 } // extern "C"
281 #endif
282 
283 #endif // AOM_AV1_ENCODER_SVC_LAYERCONTEXT_H_
encoder.h
Declares top-level encoder structures and functions.
RATE_CONTROL::maximum_buffer_size
int64_t maximum_buffer_size
Definition: ratectrl.h:284
RATE_CONTROL
Rate Control parameters and status.
Definition: ratectrl.h:118
MotionVectorSearchParams::max_mv_magnitude
int max_mv_magnitude
Definition: encoder.h:1735
SVC
struct SVC SVC
The stucture of SVC.
LAYER_CONTEXT::is_key_frame
int is_key_frame
Definition: svc_layercontext.h:80
RATE_CONTROL::best_quality
int best_quality
Definition: ratectrl.h:271
AV1_COMP::gf_frame_index
unsigned char gf_frame_index
Definition: encoder.h:2362
LAYER_CONTEXT::actual_num_seg1_blocks
int actual_num_seg1_blocks
Definition: svc_layercontext.h:58
CYCLIC_REFRESH::actual_num_seg2_blocks
int actual_num_seg2_blocks
Definition: aq_cyclicrefresh.h:69
CYCLIC_REFRESH::actual_num_seg1_blocks
int actual_num_seg1_blocks
Definition: aq_cyclicrefresh.h:64
AOM_MAX_SS_LAYERS
#define AOM_MAX_SS_LAYERS
Definition: aomcx.h:1431
av1_update_temporal_layer_framerate
void av1_update_temporal_layer_framerate(AV1_COMP *const cpi)
Prior to encoding the frame, update framerate-related quantities for the current temporal layer.
Definition: svc_layercontext.c:143
RATE_CONTROL::optimal_buffer_level
int64_t optimal_buffer_level
Definition: ratectrl.h:280
LAYER_CONTEXT::sb_index
int sb_index
Definition: svc_layercontext.h:45
get_layer_context
static LAYER_CONTEXT * get_layer_context(AV1_COMP *const cpi)
Return layer context for current layer.
Definition: svc_layercontext.c:137
LAYER_CONTEXT::last_coded_q_map
uint8_t * last_coded_q_map
Definition: svc_layercontext.h:53
SVC::layer_context
LAYER_CONTEXT layer_context[32]
Definition: svc_layercontext.h:126
AV1EncoderConfig
Main encoder configuration data structure.
Definition: encoder.h:805
av1_get_layer_resolution
void av1_get_layer_resolution(const int width_org, const int height_org, const int num, const int den, int *width_out, int *height_out)
Get resolution for current layer.
Definition: svc_layercontext.c:313
RateControlCfg::starting_buffer_level_ms
int64_t starting_buffer_level_ms
Definition: encoder.h:439
LAYER_CONTEXT::counter_encode_maxq_scene_change
int counter_encode_maxq_scene_change
Definition: svc_layercontext.h:67
AV1_COMP
Top level encoder structure.
Definition: encoder.h:2095
AV1Common::height
int height
Definition: av1_common_int.h:749
av1_update_layer_context_change_config
void av1_update_layer_context_change_config(AV1_COMP *const cpi, const int64_t target_bandwidth)
Update the layer context from a change_config() call.
Definition: svc_layercontext.c:91
SVC
The stucture of SVC.
Definition: svc_layercontext.h:91
SVC::downsample_filter_type
InterpFilter downsample_filter_type[4]
Definition: svc_layercontext.h:131
RATE_CONTROL::rate_correction_factors
double rate_correction_factors[RATE_FACTOR_LEVELS]
Definition: ratectrl.h:179
AV1_COMP::common
AV1_COMMON common
Definition: encoder.h:2138
LAYER_CONTEXT
The stucture of quantities related to each spatial and temporal layer.
Definition: svc_layercontext.h:26
RateControlCfg::worst_allowed_q
int worst_allowed_q
Definition: encoder.h:500
AV1_COMP::mv_search_params
MotionVectorSearchParams mv_search_params
Definition: encoder.h:2319
av1_svc_reset_temporal_layers
void av1_svc_reset_temporal_layers(AV1_COMP *const cpi, int is_key)
Reset on key frame: reset counters, references and buffer updates.
Definition: svc_layercontext.c:300
CommonModeInfoParams::mi_rows
int mi_rows
Definition: av1_common_int.h:498
av1_one_pass_cbr_svc_start_layer
void av1_one_pass_cbr_svc_start_layer(AV1_COMP *const cpi)
Before encoding, set resolutions and allocate compressor data.
Definition: svc_layercontext.c:327
CYCLIC_REFRESH::last_coded_q_map
uint8_t * last_coded_q_map
Definition: aq_cyclicrefresh.h:85
RateControlCfg::target_bandwidth
int64_t target_bandwidth
Definition: encoder.h:454
LAYER_CONTEXT::map
int8_t * map
Definition: svc_layercontext.h:49
av1_free_svc_cyclic_refresh
void av1_free_svc_cyclic_refresh(AV1_COMP *const cpi)
Free the memory used for cyclic refresh in layer context.
Definition: svc_layercontext.c:288
CYCLIC_REFRESH::map
int8_t * map
Definition: aq_cyclicrefresh.h:81
AOM_MAX_LAYERS
#define AOM_MAX_LAYERS
Definition: aomcx.h:1430
RATE_CONTROL::starting_buffer_level
int64_t starting_buffer_level
Definition: ratectrl.h:276
av1_save_layer_context
void av1_save_layer_context(AV1_COMP *const cpi)
Save the layer context after encoding the frame.
Definition: svc_layercontext.c:213
av1_init_layer_context
void av1_init_layer_context(AV1_COMP *const cpi)
Initialize layer context data from init_config().
Definition: svc_layercontext.c:23
AV1_COMP::rc
RATE_CONTROL rc
Definition: encoder.h:2294
LAYER_CONTEXT::speed
uint8_t speed
Definition: svc_layercontext.h:72
AV1Common
Top level common structure used by both encoder and decoder.
Definition: av1_common_int.h:723
av1_svc_primary_ref_frame
int av1_svc_primary_ref_frame(const struct AV1_COMP *const cpi)
Get primary reference frame for current layer.
av1_restore_layer_context
void av1_restore_layer_context(AV1_COMP *const cpi)
Prior to encoding the frame, set the layer context, for the current layer to be encoded,...
Definition: svc_layercontext.c:167
CYCLIC_REFRESH
The stucture of CYCLIC_REFRESH.
Definition: aq_cyclicrefresh.h:36
CYCLIC_REFRESH::sb_index
int sb_index
Definition: aq_cyclicrefresh.h:49
AV1_COMP::framerate
double framerate
Definition: encoder.h:2299
CommonModeInfoParams::mi_cols
int mi_cols
Definition: av1_common_int.h:503
SVC::reference
int reference[INTER_REFS_PER_FRAME]
Definition: svc_layercontext.h:107
LAYER_CONTEXT::actual_num_seg2_blocks
int actual_num_seg2_blocks
Definition: svc_layercontext.h:63
AV1Common::width
int width
Definition: av1_common_int.h:748
AV1_COMP::cyclic_refresh
CYCLIC_REFRESH * cyclic_refresh
Definition: encoder.h:2335
SVC::downsample_filter_phase
int downsample_filter_phase[4]
Definition: svc_layercontext.h:137
AV1_COMP::oxcf
AV1EncoderConfig oxcf
Definition: encoder.h:2143
AV1EncoderConfig::rc_cfg
RateControlCfg rc_cfg
Definition: encoder.h:827
AV1Common::current_frame
CurrentFrame current_frame
Definition: av1_common_int.h:727
RATE_CONTROL::last_q
int last_q[FRAME_TYPES]
Definition: ratectrl.h:154
LAYER_CONTEXT::group_index
unsigned char group_index
Definition: svc_layercontext.h:76
AV1Common::mi_params
CommonModeInfoParams mi_params
Definition: av1_common_int.h:887
LAYER_CONTEXT::max_mv_magnitude
int max_mv_magnitude
Definition: svc_layercontext.h:84
RATE_CONTROL::frames_to_key
int frames_to_key
Definition: ratectrl.h:223
SVC::force_zero_mode_spatial_ref
int force_zero_mode_spatial_ref
Definition: svc_layercontext.h:142
RATE_CONTROL::worst_quality
int worst_quality
Definition: ratectrl.h:267
AV1_COMP::svc
SVC svc
Definition: encoder.h:2636