diff options
Diffstat (limited to 'chromium/third_party/libvpx/source/libvpx/vp9/encoder/vp9_svc_layercontext.h')
-rw-r--r-- | chromium/third_party/libvpx/source/libvpx/vp9/encoder/vp9_svc_layercontext.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/chromium/third_party/libvpx/source/libvpx/vp9/encoder/vp9_svc_layercontext.h b/chromium/third_party/libvpx/source/libvpx/vp9/encoder/vp9_svc_layercontext.h new file mode 100644 index 00000000000..74d9c1c0d42 --- /dev/null +++ b/chromium/third_party/libvpx/source/libvpx/vp9/encoder/vp9_svc_layercontext.h @@ -0,0 +1,84 @@ +/* + * 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; + int64_t starting_buffer_level; + int64_t optimal_buffer_level; + int64_t maximum_buffer_size; + double framerate; + int avg_frame_size; + struct twopass_rc twopass; + struct vpx_fixed_buf rc_twopass_stats_in; + unsigned int current_video_frame_in_layer; + int is_key_frame; +} 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); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // VP9_ENCODER_VP9_SVC_LAYERCONTEXT_ |