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diff --git a/media/libvpx/libvpx/vp8/encoder/denoising.h b/media/libvpx/libvpx/vp8/encoder/denoising.h
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+++ b/media/libvpx/libvpx/vp8/encoder/denoising.h
@@ -0,0 +1,103 @@
+/*
+ *  Copyright (c) 2012 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 VPX_VP8_ENCODER_DENOISING_H_
+#define VPX_VP8_ENCODER_DENOISING_H_
+
+#include "block.h"
+#include "vp8/common/loopfilter.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SUM_DIFF_THRESHOLD 512
+#define SUM_DIFF_THRESHOLD_HIGH 600
+#define MOTION_MAGNITUDE_THRESHOLD (8 * 3)
+
+#define SUM_DIFF_THRESHOLD_UV (96)  // (8 * 8 * 1.5)
+#define SUM_DIFF_THRESHOLD_HIGH_UV (8 * 8 * 2)
+#define SUM_DIFF_FROM_AVG_THRESH_UV (8 * 8 * 8)
+#define MOTION_MAGNITUDE_THRESHOLD_UV (8 * 3)
+
+#define MAX_GF_ARF_DENOISE_RANGE (8)
+
+enum vp8_denoiser_decision { COPY_BLOCK, FILTER_BLOCK };
+
+enum vp8_denoiser_filter_state { kNoFilter, kFilterZeroMV, kFilterNonZeroMV };
+
+enum vp8_denoiser_mode {
+  kDenoiserOff,
+  kDenoiserOnYOnly,
+  kDenoiserOnYUV,
+  kDenoiserOnYUVAggressive,
+  kDenoiserOnAdaptive
+};
+
+typedef struct {
+  // Scale factor on sse threshold above which no denoising is done.
+  unsigned int scale_sse_thresh;
+  // Scale factor on motion magnitude threshold above which no
+  // denoising is done.
+  unsigned int scale_motion_thresh;
+  // Scale factor on motion magnitude below which we increase the strength of
+  // the temporal filter (in function vp8_denoiser_filter).
+  unsigned int scale_increase_filter;
+  // Scale factor to bias to ZEROMV for denoising.
+  unsigned int denoise_mv_bias;
+  // Scale factor to bias to ZEROMV for coding mode selection.
+  unsigned int pickmode_mv_bias;
+  // Quantizer threshold below which we use the segmentation map to switch off
+  // loop filter for blocks that have been coded as ZEROMV-LAST a certain number
+  // (consec_zerolast) of consecutive frames. Note that the delta-QP is set to
+  // 0 when segmentation map is used for shutting off loop filter.
+  unsigned int qp_thresh;
+  // Threshold for number of consecutive frames for blocks coded as ZEROMV-LAST.
+  unsigned int consec_zerolast;
+  // Threshold for amount of spatial blur on Y channel. 0 means no spatial blur.
+  unsigned int spatial_blur;
+} denoise_params;
+
+typedef struct vp8_denoiser {
+  YV12_BUFFER_CONFIG yv12_running_avg[MAX_REF_FRAMES];
+  YV12_BUFFER_CONFIG yv12_mc_running_avg;
+  // TODO(marpan): Should remove yv12_last_source and use vp8_lookahead_peak.
+  YV12_BUFFER_CONFIG yv12_last_source;
+  unsigned char *denoise_state;
+  int num_mb_cols;
+  int denoiser_mode;
+  int threshold_aggressive_mode;
+  int nmse_source_diff;
+  int nmse_source_diff_count;
+  int qp_avg;
+  int qp_threshold_up;
+  int qp_threshold_down;
+  int bitrate_threshold;
+  denoise_params denoise_pars;
+} VP8_DENOISER;
+
+int vp8_denoiser_allocate(VP8_DENOISER *denoiser, int width, int height,
+                          int num_mb_rows, int num_mb_cols, int mode);
+
+void vp8_denoiser_free(VP8_DENOISER *denoiser);
+
+void vp8_denoiser_set_parameters(VP8_DENOISER *denoiser, int mode);
+
+void vp8_denoiser_denoise_mb(VP8_DENOISER *denoiser, MACROBLOCK *x,
+                             unsigned int best_sse, unsigned int zero_mv_sse,
+                             int recon_yoffset, int recon_uvoffset,
+                             loop_filter_info_n *lfi_n, int mb_row, int mb_col,
+                             int block_index, int consec_zero_last);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VPX_VP8_ENCODER_DENOISING_H_