text: /*!
   * \copy
   *     Copyright (c)  2011-2013, Cisco Systems
   *     All rights reserved.
   *
   *     Redistribution and use in source and binary forms, with or without
   *     modification, are permitted provided that the following conditions
   *     are met:
   *
   *        * Redistributions of source code must retain the above copyright
   *          notice, this list of conditions and the following disclaimer.
   *
   *        * Redistributions in binary form must reproduce the above copyright
   *          notice, this list of conditions and the following disclaimer in
   *          the documentation and/or other materials provided with the
   *          distribution.
   *
   *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   *     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   *     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   *     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   *     COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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   *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   *     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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   *
   * \file        :  denoise.h
   *
   * \brief       :  denoise class of wels video processor class
   *
   * \date        :  2011/03/15
   *
   * \description :  1. rewrite the package code of denoise class
   *
   *************************************************************************************
   */
  
  #ifndef WELSVP_DENOISE_H
  #define WELSVP_DENOISE_H
  
  #include BLIK_OPENH264_U_util_h //original-code:"util.h"
  #include BLIK_OPENH264_U_memory_h //original-code:"memory.h"
  #include BLIK_OPENH264_U_WelsFrameWork_h //original-code:"WelsFrameWork.h"
  #include BLIK_OPENH264_U_IWelsVP_h //original-code:"IWelsVP.h"
  
  
  #define DENOISE_GRAY_RADIUS (1)
  #define DENOISE_GRAY_SIGMA  (2)
  
  #define UV_WINDOWS_RADIUS   (2)
  #define TAIL_OF_LINE8       (7)
  
  #define DENOISE_Y_COMPONENT (1)
  #define DENOISE_U_COMPONENT (2)
  #define DENOISE_V_COMPONENT (4)
  #define DENOISE_ALL_COMPONENT (7)
  
  
  WELSVP_NAMESPACE_BEGIN
  
  void Gauss3x3Filter (uint8_t* pixels, int32_t stride);
  
  typedef void (DenoiseFilterFunc) (uint8_t* pixels, int32_t stride);
  
  typedef DenoiseFilterFunc* DenoiseFilterFuncPtr;
  
  DenoiseFilterFunc     BilateralLumaFilter8_c;
  DenoiseFilterFunc     WaverageChromaFilter8_c;
  
  #ifdef X86_ASM
  WELSVP_EXTERN_C_BEGIN
  DenoiseFilterFunc     BilateralLumaFilter8_sse2 ;
  DenoiseFilterFunc     WaverageChromaFilter8_sse2 ;
  WELSVP_EXTERN_C_END
  #endif
  
  typedef  struct TagDenoiseFuncs {
    DenoiseFilterFuncPtr pfBilateralLumaFilter8;//on 8 samples
    DenoiseFilterFuncPtr pfWaverageChromaFilter8;//on 8 samples
  } SDenoiseFuncs;
  
  class CDenoiser : public IStrategy {
   public:
    CDenoiser (int32_t iCpuFlag);
    ~CDenoiser();
  
    EResult Process (int32_t iType, SPixMap* pSrc, SPixMap* dst);
  
   private:
    void InitDenoiseFunc (SDenoiseFuncs& pf, int32_t cpu);
    void BilateralDenoiseLuma (uint8_t* p_y_data, int32_t width, int32_t height, int32_t stride);
    void WaverageDenoiseChroma (uint8_t* pSrcUV, int32_t width, int32_t height, int32_t stride);
  
   private:
    float          m_fSigmaGrey;                  //sigma for grey scale similarity, suggestion 2.5-3
    uint16_t       m_uiSpaceRadius;               //filter windows radius: 1-3x3, 2-5x5,3-7x7. Larger size, slower speed
    uint16_t       m_uiType;                      //do denoising on which component 1-Y, 2-U, 4-V; 7-YUV, 3-YU, 5-YV, 6-UV
  
    SDenoiseFuncs m_pfDenoise;
    int32_t      m_CPUFlag;
  };
  
  WELSVP_NAMESPACE_END
  
  #endif
  