e899859c48
All changes are for spatial svc only. 1. Enable encoding hidden frames in each layer and use alt reference idex to reference the hidden frame in each layer 2. Use golden reference idx for spatial reference 3. For those layers that don't have hidden frames (caused by lack of frame buffers), reference a hidden frame in lower layers 4. Add "auto-alt-refs" in svc options Change-Id: Idf27d1fd2fb5f3ffd9e86d2119235e3dad36c178
109 lines
3.8 KiB
C
109 lines
3.8 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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double framerate;
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int avg_frame_size;
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TWO_PASS twopass;
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struct vpx_fixed_buf rc_twopass_stats_in;
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unsigned int current_video_frame_in_layer;
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int is_key_frame;
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vpx_svc_parameters_t svc_params_received;
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struct lookahead_entry *alt_ref_source;
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int alt_ref_idx;
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int has_alt_frame;
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size_t layer_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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// Store scaled source frames to be used for temporal filter to generate
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// a alt ref frame.
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YV12_BUFFER_CONFIG scaled_frames[MAX_LAG_BUFFERS];
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// Layer context used for rate control in one pass temporal CBR mode or
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// two pass spatial mode. Defined for temporal or spatial layers for now.
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// Does not support temporal combined with spatial RC.
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LAYER_CONTEXT layer_context[MAX(VPX_TS_MAX_LAYERS, VPX_SS_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 temporal layer.
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void vp9_update_temporal_layer_framerate(struct VP9_COMP *const cpi);
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// Update framerate-related quantities for the current spatial layer.
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void vp9_update_spatial_layer_framerate(struct VP9_COMP *const cpi,
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double framerate);
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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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// Initialize second pass rc for spatial svc.
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void vp9_init_second_pass_spatial_svc(struct VP9_COMP *cpi);
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// Increment number of video frames in layer
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void vp9_inc_frame_in_layer(SVC *svc);
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// Check if current layer is key frame in spatial upper layer
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int vp9_is_upper_layer_key_frame(const struct VP9_COMP *const cpi);
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// Copy the source image, flags and svc parameters into a new framebuffer
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// with the expected stride/border
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int vp9_svc_lookahead_push(const struct VP9_COMP *const cpi,
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struct lookahead_ctx *ctx, YV12_BUFFER_CONFIG *src,
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int64_t ts_start, int64_t ts_end,
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unsigned int flags);
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// Get the next source buffer to encode
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struct lookahead_entry *vp9_svc_lookahead_pop(struct VP9_COMP *const cpi,
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struct lookahead_ctx *ctx,
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int drain);
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// Get a future source buffer to encode
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struct lookahead_entry *vp9_svc_lookahead_peek(struct VP9_COMP *const cpi,
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struct lookahead_ctx *ctx,
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int index, int copy_params);
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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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