/*! * \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, *     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER *     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT *     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN *     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE *     POSSIBILITY OF SUCH DAMAGE. * * \file	    :  downsample.h * * \brief	    :  downsample class of wels video processor class * * \date        :  2011/03/33 * * \description :  1. rewrite the package code of downsample class * ************************************************************************************* */ #ifndef WELSVP_DOWNSAMPLE_H#define WELSVP_DOWNSAMPLE_H #include "util.h"#include "WelsFrameWork.h"#include "IWelsVP.h"#include "macros.h" WELSVP_NAMESPACE_BEGIN  typedef void (HalveDownsampleFunc) (uint8_t* pDst, const int32_t kiDstStride,                                    uint8_t* pSrc, const int32_t kiSrcStride,                                    const int32_t kiSrcWidth, const int32_t kiSrcHeight); typedef void (GeneralDownsampleFunc) (uint8_t* pDst, const int32_t kiDstStride, const int32_t kiDstWidth,                                      const int32_t kiDstHeight,                                      uint8_t* pSrc, const int32_t kiSrcStride, const int32_t kiSrcWidth, const int32_t kiSrcHeight); typedef HalveDownsampleFunc*		PHalveDownsampleFunc;typedef GeneralDownsampleFunc*	PGeneralDownsampleFunc; HalveDownsampleFunc   DyadicBilinearDownsampler_c;GeneralDownsampleFunc GeneralBilinearFastDownsampler_c;GeneralDownsampleFunc GeneralBilinearAccurateDownsampler_c; typedef struct {  // align_index: 0 = x32; 1 = x16; 2 = x8; 3 = common case left;  PHalveDownsampleFunc			pfHalfAverage[4];  PGeneralDownsampleFunc		pfGeneralRatioLuma;  PGeneralDownsampleFunc		pfGeneralRatioChroma;} SDownsampleFuncs;  #ifdef X86_ASMWELSVP_EXTERN_C_BEGIN// used for scr width is multipler of 8 pixelsHalveDownsampleFunc		DyadicBilinearDownsamplerWidthx8_sse;// iSrcWidth= x16 pixelsHalveDownsampleFunc		DyadicBilinearDownsamplerWidthx16_sse;// iSrcWidth= x32 pixelsHalveDownsampleFunc		DyadicBilinearDownsamplerWidthx32_sse;// used for scr width is multipler of 16 pixelsHalveDownsampleFunc		DyadicBilinearDownsamplerWidthx16_ssse3;// iSrcWidth= x32 pixelsHalveDownsampleFunc		DyadicBilinearDownsamplerWidthx32_ssse3;// iSrcWidth= x16 pixelsHalveDownsampleFunc		DyadicBilinearDownsamplerWidthx16_sse4;// iSrcWidth= x32 pixelsHalveDownsampleFunc		DyadicBilinearDownsamplerWidthx32_sse4; GeneralDownsampleFunc GeneralBilinearFastDownsamplerWrap_sse2;GeneralDownsampleFunc GeneralBilinearAccurateDownsamplerWrap_sse2; void GeneralBilinearFastDownsampler_sse2 (uint8_t* pDst, const int32_t kiDstStride, const int32_t kiDstWidth,    const int32_t kiDstHeight,    uint8_t* pSrc, const int32_t kiSrcStride, const int32_t kiSrcWidth, const int32_t kiSrcHeight,    const uint32_t kuiScaleX, const uint32_t kuiScaleY);void GeneralBilinearAccurateDownsampler_sse2 (uint8_t* pDst, const int32_t kiDstStride, const int32_t kiDstWidth,    const int32_t kiDstHeight,    uint8_t* pSrc, const int32_t kiSrcStride, const int32_t kiSrcWidth, const int32_t kiSrcHeight,    const uint32_t kuiScaleX, const uint32_t kuiScaleY);WELSVP_EXTERN_C_END#endif #ifdef HAVE_NEONWELSVP_EXTERN_C_BEGIN// iSrcWidth no limitationHalveDownsampleFunc		DyadicBilinearDownsampler_neon;// iSrcWidth = x32 pixelsHalveDownsampleFunc		DyadicBilinearDownsamplerWidthx32_neon; GeneralDownsampleFunc   GeneralBilinearAccurateDownsamplerWrap_neon; void GeneralBilinearAccurateDownsampler_neon (uint8_t* pDst, const int32_t kiDstStride, const int32_t kiDstWidth,    const int32_t kiDstHeight,    uint8_t* pSrc, const int32_t kiSrcStride, const uint32_t kuiScaleX, const uint32_t kuiScaleY); WELSVP_EXTERN_C_END#endif  class CDownsampling : public IStrategy { public:  CDownsampling (int32_t iCpuFlag);  ~CDownsampling();   EResult Process (int32_t iType, SPixMap* pSrc, SPixMap* pDst);  private:  void InitDownsampleFuncs (SDownsampleFuncs& sDownsampleFunc, int32_t iCpuFlag);   int32_t GetAlignedIndex (const int32_t kiSrcWidth);  private:  SDownsampleFuncs m_pfDownsample;  int32_t  m_iCPUFlag;}; WELSVP_NAMESPACE_END #endif