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/*
* Copyright (c) 2019, Alliance for Open Media. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef AOM_AV1_ENCODER_SVC_LAYERCONTEXT_H_
#define AOM_AV1_ENCODER_SVC_LAYERCONTEXT_H_
#include "av1/encoder/aq_cyclicrefresh.h"
#include "av1/encoder/encoder.h"
#include "av1/encoder/ratectrl.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
RATE_CONTROL rc;
int framerate_factor;
int64_t layer_target_bitrate;
int scaling_factor_num;
int scaling_factor_den;
int64_t target_bandwidth;
int64_t spatial_layer_target_bandwidth;
double framerate;
int avg_frame_size;
int max_q;
int min_q;
int frames_from_key_frame;
// Cyclic refresh parameters (aq-mode=3), that need to be updated per-frame.
int sb_index;
int8_t *map;
uint8_t *last_coded_q_map;
int actual_num_seg1_blocks;
int actual_num_seg2_blocks;
int counter_encode_maxq_scene_change;
uint8_t speed;
unsigned char group_index;
} LAYER_CONTEXT;
typedef struct SVC {
int spatial_layer_id;
int temporal_layer_id;
int number_spatial_layers;
int number_temporal_layers;
int external_ref_frame_config;
int non_reference_frame;
// LAST_FRAME (0), LAST2_FRAME(1), LAST3_FRAME(2), GOLDEN_FRAME(3),
// BWDREF_FRAME(4), ALTREF2_FRAME(5), ALTREF_FRAME(6).
int reference[INTER_REFS_PER_FRAME];
int ref_idx[INTER_REFS_PER_FRAME];
int refresh[REF_FRAMES];
double base_framerate;
unsigned int current_superframe;
unsigned int buffer_time_index[REF_FRAMES];
unsigned char buffer_spatial_layer[REF_FRAMES];
int skip_nonzeromv_last;
int skip_nonzeromv_gf;
// Layer context used for rate control in one pass temporal CBR mode or
// two pass spatial mode.
LAYER_CONTEXT layer_context[AOM_MAX_LAYERS];
} SVC;
struct AV1_COMP;
// Initialize layer context data from init_config().
void av1_init_layer_context(struct AV1_COMP *const cpi);
// Update the layer context from a change_config() call.
void av1_update_layer_context_change_config(struct AV1_COMP *const cpi,
const int64_t target_bandwidth);
// Prior to encoding the frame, update framerate-related quantities
// for the current temporal layer.
void av1_update_temporal_layer_framerate(struct AV1_COMP *const cpi);
// Prior to encoding the frame, set the layer context, for the current layer
// to be encoded, to the cpi struct.
void av1_restore_layer_context(struct AV1_COMP *const cpi);
// Save the layer context after encoding the frame.
void av1_save_layer_context(struct AV1_COMP *const cpi);
void av1_free_svc_cyclic_refresh(struct AV1_COMP *const cpi);
void av1_svc_reset_temporal_layers(struct AV1_COMP *const cpi, int is_key);
void av1_one_pass_cbr_svc_start_layer(struct AV1_COMP *const cpi);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AV1_ENCODER_SVC_LAYERCONTEXT_H_
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