Standalone denoiser (off by default).

webrtc/modules/video_processing/util/denoiser_filter.h

Index: webrtc/modules/video_processing/util/denoiser_filter.h
diff --git a/webrtc/modules/video_processing/util/denoiser_filter.h b/webrtc/modules/video_processing/util/denoiser_filter.h
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+/*
+ *  Copyright (c) 2015 The WebRTC 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 WEBRTC_MODULES_VIDEO_PROCESSING_UTIL_DENOISER_FILTER_H_
+#define WEBRTC_MODULES_VIDEO_PROCESSING_UTIL_DENOISER_FILTER_H_
+
+#include "webrtc/modules/include/module_common_types.h"
+#include "webrtc/modules/video_processing/include/video_processing_defines.h"
+#include "webrtc/video_frame.h"
+
+namespace webrtc {
+
+extern const int kMotionMagnitudeThreshold;
+extern const int kSumDiffThreshold;
+extern const int kSumDiffThresholdHigh;
+
+enum DenoiserDecision { COPY_BLOCK, FILTER_BLOCK };
+struct DenoiseMetrics {
+  uint32_t var;
+  uint32_t sad;
+  uint8_t denoise;
+  bool is_skin;
+};
+
+class DenoiserFilter {
+ public:
+  static DenoiserFilter* Create();
+
+  virtual ~DenoiserFilter() {}
+
+  virtual DenoiserDecision MbDenoise(uint8_t* mc_running_avg_y,
+                                     int mc_avg_y_stride,
+                                     uint8_t* running_avg_y,
+                                     int avg_y_stride,
+                                     const uint8_t* sig,
+                                     int sig_stride,
+                                     uint8_t motion_magnitude,
+                                     int increase_denoising) = 0;
+  virtual uint32_t Variance16x8(const uint8_t* a,
+                                int a_stride,
+                                const uint8_t* b,
+                                int b_stride,
+                                unsigned int* sse) = 0;
+  virtual void CopyMem16x16(const uint8_t* src,
+                            int src_stride,
+                            uint8_t* dst,
+                            int dst_stride) = 0;
+  virtual void CopyMem8x8(const uint8_t* src,
+                          int src_stride,
+                          uint8_t* dst,
+                          int dst_stride) = 0;
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_VIDEO_PROCESSING_UTIL_DENOISER_FILTER_H_