libvpx: Pull from upstream

source/libvpx/vp8/common/onyx.h

 /*
  *  Copyright (c) 2010 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 86 matching lines @@
     {
         /* 4 versions of bitstream defined:
          *   0 best quality/slowest decode, 3 lowest quality/fastest decode
          */
         int Version;
         int Width;
         int Height;
         struct vpx_rational  timebase;
         unsigned int target_bandwidth;    /* kilobits per second */
 
-        /* parameter used for applying pre processing blur: recommendation 0 */
+        /* Parameter used for applying denoiser.
+         * For temporal denoiser: noise_sensitivity = 0 means off,
+         * noise_sensitivity = 1 means temporal denoiser on for Y channel only,
+         * noise_sensitivity = 2 means temporal denoiser on for all channels.
+         * noise_sensitivity = 3 will be used for aggressive mode in future.
+         * Temporal denoiser is enabled via the build option
+         * CONFIG_TEMPORAL_DENOISING.
+         * For spatial denoiser: noise_sensitivity controls the amount of
+         * pre-processing blur: noise_sensitivity = 0 means off.
+         * Spatial denoiser invoked under !CONFIG_TEMPORAL_DENOISING.
+         */
         int noise_sensitivity;
 
         /* parameter used for sharpening output: recommendation 0: */
         int Sharpness;
         int cpu_used;
         unsigned int rc_max_intra_bitrate_pct;
 
         /* mode ->
          *(0)=Realtime/Live Encoding. This mode is optimized for realtim
          *    encoding (for example, capturing a television signal or feed
@@ skipping 143 matching lines @@
     int vp8_set_roimap(struct VP8_COMP* comp, unsigned char *map, unsigned int rows, unsigned int cols, int delta_q[4], int delta_lf[4], unsigned int threshold[4]);
     int vp8_set_active_map(struct VP8_COMP* comp, unsigned char *map, unsigned int rows, unsigned int cols);
     int vp8_set_internal_size(struct VP8_COMP* comp, VPX_SCALING horiz_mode, VPX_SCALING vert_mode);
     int vp8_get_quantizer(struct VP8_COMP* c);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif  // VP8_COMMON_ONYX_H_