67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/*
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* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_ENCODER_VP9_SVC_LAYERCONTEXT_H_
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#define VP9_ENCODER_VP9_SVC_LAYERCONTEXT_H_
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#include "vpx/vpx_encoder.h"
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#include "vp9/encoder/vp9_ratectrl.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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RATE_CONTROL rc;
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int target_bandwidth;
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int64_t starting_buffer_level;
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int64_t optimal_buffer_level;
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int64_t maximum_buffer_size;
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double framerate;
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int avg_frame_size;
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} LAYER_CONTEXT;
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typedef struct {
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int spatial_layer_id;
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int temporal_layer_id;
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int number_spatial_layers;
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int number_temporal_layers;
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// Layer context used for rate control in CBR mode, only defined for
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// temporal layers for now.
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LAYER_CONTEXT layer_context[VPX_TS_MAX_LAYERS];
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} SVC;
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struct VP9_COMP;
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// Initialize layer context data from init_config().
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void vp9_init_layer_context(struct VP9_COMP *const cpi);
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// Update the layer context from a change_config() call.
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void vp9_update_layer_context_change_config(struct VP9_COMP *const cpi,
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const int target_bandwidth);
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// Prior to encoding the frame, update framerate-related quantities
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// for the current layer.
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void vp9_update_layer_framerate(struct VP9_COMP *const cpi);
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// Prior to encoding the frame, set the layer context, for the current layer
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// to be encoded, to the cpi struct.
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void vp9_restore_layer_context(struct VP9_COMP *const cpi);
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// Save the layer context after encoding the frame.
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void vp9_save_layer_context(struct VP9_COMP *const cpi);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP9_ENCODER_VP9_SVC_LAYERCONTEXT_
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