libvpx: Pull from upstream

source/libvpx/vp9/encoder/vp9_svc_layercontext.h

 /*
  *  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.
  */
 
@@ skipping 10 matching lines @@
 
 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.
@@ skipping 26 matching lines @@
 
 // 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_