AOMedia AV1 Codec: av1/encoder/svc_layercontext.h Source File

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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 "aom_scale/yv12config.h"
15#include "av1/encoder/aq_cyclicrefresh.h"
16#include "av1/encoder/encoder.h"
17#include "av1/encoder/ratectrl.h"
18
19#ifdef __cplusplus
20extern "C" {
21#endif
22
27 typedef struct {
29 RATE_CONTROL rc;
30 PRIMARY_RATE_CONTROL p_rc;
31 int framerate_factor;
32 int64_t layer_target_bitrate;
33 int scaling_factor_num;
34 int scaling_factor_den;
35 int64_t target_bandwidth;
36 int64_t spatial_layer_target_bandwidth;
37 double framerate;
38 int avg_frame_size;
39 int max_q;
40 int min_q;
41 int frames_from_key_frame;
47 int sb_index;
51 int8_t *map;
55 int actual_num_seg1_blocks;
56
60 int actual_num_seg2_blocks;
64 int counter_encode_maxq_scene_change;
65
69 uint8_t speed;
73 unsigned char group_index;
77 int is_key_frame;
81 int max_mv_magnitude;
82} LAYER_CONTEXT;
83
88 typedef struct SVC {
90 int spatial_layer_id;
91 int temporal_layer_id;
92 int number_spatial_layers;
93 int number_temporal_layers;
94 int use_flexible_mode;
95 int ksvc_fixed_mode;
99 double base_framerate;
100 unsigned int current_superframe;
101 unsigned int buffer_time_index[REF_FRAMES];
102 unsigned char buffer_spatial_layer[REF_FRAMES];
103 int skip_mvsearch_last;
104 int skip_mvsearch_gf;
105 int skip_mvsearch_altref;
106 int spatial_layer_fb[REF_FRAMES];
107 int temporal_layer_fb[REF_FRAMES];
108 int num_encoded_top_layer;
109 int first_layer_denoise;
110 YV12_BUFFER_CONFIG source_last_TL0;
111 int mi_cols_full_resoln;
112 int mi_rows_full_resoln;
118 LAYER_CONTEXT *layer_context;
119
123 int num_allocated_layers;
124
128 InterpFilter downsample_filter_type[AOM_MAX_SS_LAYERS];
129
134 int downsample_filter_phase[AOM_MAX_SS_LAYERS];
135
139 int force_zero_mode_spatial_ref;
140} SVC;
141
142struct AV1_COMP;
143struct EncodeFrameInput;
144
155void av1_init_layer_context(struct AV1_COMP *const cpi);
156
169bool av1_alloc_layer_context(struct AV1_COMP *cpi, int num_layers);
170
182void av1_update_layer_context_change_config(struct AV1_COMP *const cpi,
183 const int64_t target_bandwidth);
184
197void av1_update_temporal_layer_framerate(struct AV1_COMP *const cpi);
198
210void av1_restore_layer_context(struct AV1_COMP *const cpi);
211
220void av1_save_layer_context(struct AV1_COMP *const cpi);
221
230void av1_free_svc_cyclic_refresh(struct AV1_COMP *const cpi);
231
241void av1_svc_reset_temporal_layers(struct AV1_COMP *const cpi, int is_key);
242
251void av1_one_pass_cbr_svc_start_layer(struct AV1_COMP *const cpi);
252
263 int av1_svc_primary_ref_frame(const struct AV1_COMP *const cpi);
264
277void av1_get_layer_resolution(const int width_org, const int height_org,
278 const int num, const int den, int *width_out,
279 int *height_out);
280
281void av1_set_svc_fixed_mode(struct AV1_COMP *const cpi);
282
283void av1_svc_check_reset_layer_rc_flag(struct AV1_COMP *const cpi);
284
285void av1_svc_set_last_source(struct AV1_COMP *const cpi,
286 struct EncodeFrameInput *frame_input,
287 YV12_BUFFER_CONFIG *prev_source);
288
289#ifdef __cplusplus
290} // extern "C"
291#endif
292
293#endif // AOM_AV1_ENCODER_SVC_LAYERCONTEXT_H_
encoder.h
Declares top-level encoder structures and functions.
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_update_temporal_layer_framerate
void av1_update_temporal_layer_framerate(struct AV1_COMP *const cpi)
Prior to encoding the frame, update framerate-related quantities for the current temporal layer.
Definition: svc_layercontext.c:154
av1_svc_reset_temporal_layers
void av1_svc_reset_temporal_layers(struct AV1_COMP *const cpi, int is_key)
Reset on key frame: reset counters, references and buffer updates.
Definition: svc_layercontext.c:329
av1_restore_layer_context
void av1_restore_layer_context(struct AV1_COMP *const cpi)
Prior to encoding the frame, set the layer context, for the current layer to be encoded,...
Definition: svc_layercontext.c:185
av1_save_layer_context
void av1_save_layer_context(struct AV1_COMP *const cpi)
Save the layer context after encoding the frame.
Definition: svc_layercontext.c:235
av1_alloc_layer_context
bool av1_alloc_layer_context(struct AV1_COMP *cpi, int num_layers)
Allocate layer context data.
Definition: svc_layercontext.c:84
av1_init_layer_context
void av1_init_layer_context(struct AV1_COMP *const cpi)
Initialize layer context data from init_config().
Definition: svc_layercontext.c:24
av1_free_svc_cyclic_refresh
void av1_free_svc_cyclic_refresh(struct AV1_COMP *const cpi)
Free the memory used for cyclic refresh in layer context.
Definition: svc_layercontext.c:318
av1_one_pass_cbr_svc_start_layer
void av1_one_pass_cbr_svc_start_layer(struct AV1_COMP *const cpi)
Before encoding, set resolutions and allocate compressor data.
Definition: svc_layercontext.c:356
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:342
av1_update_layer_context_change_config
void av1_update_layer_context_change_config(struct AV1_COMP *const cpi, const int64_t target_bandwidth)
Update the layer context from a change_config() call.
Definition: svc_layercontext.c:98
AOM_MAX_SS_LAYERS
#define AOM_MAX_SS_LAYERS
Definition: aomcx.h:1602
AV1_COMP
Top level encoder structure.
Definition: encoder.h:2759
EncodeFrameInput
Input frames and last input frame.
Definition: encoder.h:3470
LAYER_CONTEXT
The stucture of quantities related to each spatial and temporal layer.
Definition: svc_layercontext.h:27
LAYER_CONTEXT::actual_num_seg1_blocks
int actual_num_seg1_blocks
Definition: svc_layercontext.h:55
LAYER_CONTEXT::sb_index
int sb_index
Definition: svc_layercontext.h:47
LAYER_CONTEXT::counter_encode_maxq_scene_change
int counter_encode_maxq_scene_change
Definition: svc_layercontext.h:64
LAYER_CONTEXT::speed
uint8_t speed
Definition: svc_layercontext.h:69
LAYER_CONTEXT::actual_num_seg2_blocks
int actual_num_seg2_blocks
Definition: svc_layercontext.h:60
LAYER_CONTEXT::max_mv_magnitude
int max_mv_magnitude
Definition: svc_layercontext.h:81
LAYER_CONTEXT::is_key_frame
int is_key_frame
Definition: svc_layercontext.h:77
LAYER_CONTEXT::group_index
unsigned char group_index
Definition: svc_layercontext.h:73
LAYER_CONTEXT::map
int8_t * map
Definition: svc_layercontext.h:51
PRIMARY_RATE_CONTROL
Primary Rate Control parameters and status.
Definition: ratectrl.h:270
RATE_CONTROL
Rate Control parameters and status.
Definition: ratectrl.h:134
SVC
The stucture of SVC.
Definition: svc_layercontext.h:88
SVC::num_allocated_layers
int num_allocated_layers
Definition: svc_layercontext.h:123
SVC::force_zero_mode_spatial_ref
int force_zero_mode_spatial_ref
Definition: svc_layercontext.h:139
SVC::layer_context
LAYER_CONTEXT * layer_context
Definition: svc_layercontext.h:118
SVC::downsample_filter_type
InterpFilter downsample_filter_type[4]
Definition: svc_layercontext.h:128
SVC::downsample_filter_phase
int downsample_filter_phase[4]
Definition: svc_layercontext.h:134
yv12_buffer_config
YV12 frame buffer data structure.
Definition: yv12config.h:39