/*
 *  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/base/scoped_ptr.h"
#include "webrtc/modules/include/module_common_types.h"
#include "webrtc/modules/video_processing/include/video_processing_defines.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 rtc::scoped_ptr<DenoiserFilter> Create(bool runtime_cpu_detection);

  virtual ~DenoiserFilter() {}

  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;
  virtual uint32_t Variance16x8(const uint8_t* a,
                                int a_stride,
                                const uint8_t* b,
                                int b_stride,
                                unsigned int* sse) = 0;
  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;
};

}  // namespace webrtc

#endif  // WEBRTC_MODULES_VIDEO_PROCESSING_UTIL_DENOISER_FILTER_H_