ref: efe32b7900e5aeebe7427cd315fe8c69ae9d14f6
dir: /codec/processing/src/downsample/downsample.h/
/*!
* \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"
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_ASM
WELSVP_EXTERN_C_BEGIN
// used for scr width is multipler of 8 pixels
HalveDownsampleFunc DyadicBilinearDownsamplerWidthx8_sse;
// iSrcWidth= x16 pixels
HalveDownsampleFunc DyadicBilinearDownsamplerWidthx16_sse;
// iSrcWidth= x32 pixels
HalveDownsampleFunc DyadicBilinearDownsamplerWidthx32_sse;
// used for scr width is multipler of 16 pixels
HalveDownsampleFunc DyadicBilinearDownsamplerWidthx16_ssse3;
// iSrcWidth= x32 pixels
HalveDownsampleFunc DyadicBilinearDownsamplerWidthx32_ssse3;
// iSrcWidth= x16 pixels
HalveDownsampleFunc DyadicBilinearDownsamplerWidthx16_sse4;
// iSrcWidth= x32 pixels
HalveDownsampleFunc 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_NEON
WELSVP_EXTERN_C_BEGIN
// iSrcWidth no limitation
HalveDownsampleFunc DyadicBilinearDownsampler_neon;
// iSrcWidth = x32 pixels
HalveDownsampleFunc 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