Moving src/webrtc into src/.

In order to eliminate the WebRTC Subtree mirror in Chromium, 
WebRTC is moving the content of the src/webrtc directory up
to the src/ directory.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org

Bug: chromium:611808
Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38
Reviewed-on: https://webrtc-review.googlesource.com/1560
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19845}

modules/video_processing/video_denoiser.h

@@ -0,0 +1,84 @@
+/*
+ *  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_VIDEO_DENOISER_H_
+#define WEBRTC_MODULES_VIDEO_PROCESSING_VIDEO_DENOISER_H_
+
+#include <memory>
+
+#include "webrtc/common_video/include/i420_buffer_pool.h"
+#include "webrtc/modules/video_processing/util/denoiser_filter.h"
+#include "webrtc/modules/video_processing/util/noise_estimation.h"
+#include "webrtc/modules/video_processing/util/skin_detection.h"
+
+namespace webrtc {
+
+class VideoDenoiser {
+ public:
+  explicit VideoDenoiser(bool runtime_cpu_detection);
+
+  rtc::scoped_refptr<I420BufferInterface> DenoiseFrame(
+      rtc::scoped_refptr<I420BufferInterface> frame,
+      bool noise_estimation_enabled);
+
+ private:
+  void DenoiserReset(rtc::scoped_refptr<I420BufferInterface> frame);
+
+  // Check the mb position, return 1: close to the frame center (between 1/8
+  // and 7/8 of width/height), 3: close to the border (out of 1/16 and 15/16
+  // of width/height), 2: in between.
+  int PositionCheck(int mb_row, int mb_col, int noise_level);
+
+  // To reduce false detection in moving object detection (MOD).
+  void ReduceFalseDetection(const std::unique_ptr<uint8_t[]>& d_status,
+                            std::unique_ptr<uint8_t[]>* d_status_red,
+                            int noise_level);
+
+  // Return whether a block might cause trailing artifact by checking if one of
+  // its neighbor blocks is a moving edge block.
+  bool IsTrailingBlock(const std::unique_ptr<uint8_t[]>& d_status,
+                       int mb_row,
+                       int mb_col);
+
+  // Copy input blocks to dst buffer on moving object blocks (MOB).
+  void CopySrcOnMOB(const uint8_t* y_src,
+                    int stride_src,
+                    uint8_t* y_dst,
+                    int stride_dst);
+
+  // Copy luma margin blocks when frame width/height not divisible by 16.
+  void CopyLumaOnMargin(const uint8_t* y_src,
+                        int stride_src,
+                        uint8_t* y_dst,
+                        int stride_dst);
+
+  int width_;
+  int height_;
+  int mb_rows_;
+  int mb_cols_;
+  CpuType cpu_type_;
+  std::unique_ptr<DenoiserFilter> filter_;
+  std::unique_ptr<NoiseEstimation> ne_;
+  // 1 for moving edge block, 0 for static block.
+  std::unique_ptr<uint8_t[]> moving_edge_;
+  // 1 for moving object block, 0 for static block.
+  std::unique_ptr<uint8_t[]> moving_object_;
+  // x_density_ and y_density_ are used in MOD process.
+  std::unique_ptr<uint8_t[]> x_density_;
+  std::unique_ptr<uint8_t[]> y_density_;
+  // Save the return values by MbDenoise for each block.
+  std::unique_ptr<DenoiserDecision[]> mb_filter_decision_;
+  I420BufferPool buffer_pool_;
+  rtc::scoped_refptr<I420BufferInterface> prev_buffer_;
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_VIDEO_PROCESSING_VIDEO_DENOISER_H_