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/*
* Copyright (c) 2014 The WebM project authors. 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 VP9_ENCODER_VP9_SVC_LAYERCONTEXT_H_
#define VP9_ENCODER_VP9_SVC_LAYERCONTEXT_H_
#include "vpx/vpx_encoder.h"
#include "vp9/encoder/vp9_ratectrl.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
RATE_CONTROL rc;
int target_bandwidth;
double framerate;
int avg_frame_size;
TWO_PASS twopass;
struct vpx_fixed_buf rc_twopass_stats_in;
unsigned int current_video_frame_in_layer;
int is_key_frame;
vpx_svc_parameters_t svc_params_received;
} LAYER_CONTEXT;
typedef struct {
int spatial_layer_id;
int temporal_layer_id;
int number_spatial_layers;
int number_temporal_layers;
// Layer context used for rate control in one pass temporal CBR mode or
// two pass spatial mode. Defined for temporal or spatial layers for now.
// Does not support temporal combined with spatial RC.
LAYER_CONTEXT layer_context[MAX(VPX_TS_MAX_LAYERS, VPX_SS_MAX_LAYERS)];
} SVC;
struct VP9_COMP;
// Initialize layer context data from init_config().
void vp9_init_layer_context(struct VP9_COMP *const cpi);
// Update the layer context from a change_config() call.
void vp9_update_layer_context_change_config(struct VP9_COMP *const cpi,
const int target_bandwidth);
// Prior to encoding the frame, update framerate-related quantities
// for the current temporal layer.
void vp9_update_temporal_layer_framerate(struct VP9_COMP *const cpi);
// Update framerate-related quantities for the current spatial layer.
void vp9_update_spatial_layer_framerate(struct VP9_COMP *const cpi,
double framerate);
// Prior to encoding the frame, set the layer context, for the current layer
// to be encoded, to the cpi struct.
void vp9_restore_layer_context(struct VP9_COMP *const cpi);
// Save the layer context after encoding the frame.
void vp9_save_layer_context(struct VP9_COMP *const cpi);
// Initialize second pass rc for spatial svc.
void vp9_init_second_pass_spatial_svc(struct VP9_COMP *cpi);
// Increment number of video frames in layer
void vp9_inc_frame_in_layer(SVC *svc);
// Check if current layer is key frame in spatial upper layer
int vp9_is_upper_layer_key_frame(const struct VP9_COMP *const cpi);
// Copy the source image, flags and svc parameters into a new framebuffer
// with the expected stride/border
int vp9_svc_lookahead_push(const struct VP9_COMP *const cpi,
struct lookahead_ctx *ctx, YV12_BUFFER_CONFIG *src,
int64_t ts_start, int64_t ts_end,
unsigned int flags);
// Get the next source buffer to encode
struct lookahead_entry *vp9_svc_lookahead_pop(struct VP9_COMP *const cpi,
struct lookahead_ctx *ctx,
int drain);
// Get a future source buffer to encode
struct lookahead_entry *vp9_svc_lookahead_peek(struct VP9_COMP *const cpi,
struct lookahead_ctx *ctx,
int index, int copy_params);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VP9_ENCODER_VP9_SVC_LAYERCONTEXT_
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