ref: e7cd53e81b43a841c1256d890e77534a20f6b0ab
dir: /codec/processing/src/downsample/downsample.cpp/
/*!
* \copy
* Copyright (c) 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.
*
*/
#include "downsample.h"
#include "cpu.h"
WELSVP_NAMESPACE_BEGIN
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
CDownsampling::CDownsampling (int32_t iCpuFlag) {
m_iCPUFlag = iCpuFlag;
m_eMethod = METHOD_DOWNSAMPLE;
WelsMemset (&m_pfDownsample, 0, sizeof (m_pfDownsample));
InitDownsampleFuncs (m_pfDownsample, m_iCPUFlag);
}
CDownsampling::~CDownsampling() {
}
void CDownsampling::InitDownsampleFuncs (SDownsampleFuncs& sDownsampleFunc, int32_t iCpuFlag) {
sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsampler_c;
sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsampler_c;
sDownsampleFunc.pfHalfAverage[2] = DyadicBilinearDownsampler_c;
sDownsampleFunc.pfHalfAverage[3] = DyadicBilinearDownsampler_c;
sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsampler_c;
sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsampler_c;
#if defined(X86_ASM)
if (iCpuFlag & WELS_CPU_SSE) {
sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_sse;
sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsamplerWidthx16_sse;
sDownsampleFunc.pfHalfAverage[2] = DyadicBilinearDownsamplerWidthx8_sse;
}
if (iCpuFlag & WELS_CPU_SSE2) {
sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_sse2;
sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsamplerWrap_sse2;
}
if (iCpuFlag & WELS_CPU_SSSE3) {
sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_ssse3;
sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsamplerWidthx16_ssse3;
}
if (iCpuFlag & WELS_CPU_SSE41) {
sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_sse4;
sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsamplerWidthx16_sse4;
}
#endif//X86_ASM
#if defined(HAVE_NEON)
if (iCpuFlag & WELS_CPU_NEON) {
sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_neon;
sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsampler_neon;
sDownsampleFunc.pfHalfAverage[2] = DyadicBilinearDownsampler_neon;
sDownsampleFunc.pfHalfAverage[3] = DyadicBilinearDownsampler_neon;
sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_neon;
sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearAccurateDownsamplerWrap_neon;
}
#endif
#if defined(HAVE_NEON_AARCH64)
if (iCpuFlag & WELS_CPU_NEON) {
sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_AArch64_neon;
sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsampler_AArch64_neon;
sDownsampleFunc.pfHalfAverage[2] = DyadicBilinearDownsampler_AArch64_neon;
sDownsampleFunc.pfHalfAverage[3] = DyadicBilinearDownsampler_AArch64_neon;
sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_AArch64_neon;
sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearAccurateDownsamplerWrap_AArch64_neon;
}
#endif
}
EResult CDownsampling::Process (int32_t iType, SPixMap* pSrcPixMap, SPixMap* pDstPixMap) {
int32_t iSrcWidthY = pSrcPixMap->sRect.iRectWidth;
int32_t iSrcHeightY = pSrcPixMap->sRect.iRectHeight;
int32_t iDstWidthY = pDstPixMap->sRect.iRectWidth;
int32_t iDstHeightY = pDstPixMap->sRect.iRectHeight;
int32_t iSrcWidthUV = iSrcWidthY >> 1;
int32_t iSrcHeightUV = iSrcHeightY >> 1;
int32_t iDstWidthUV = iDstWidthY >> 1;
int32_t iDstHeightUV = iDstHeightY >> 1;
if (iSrcWidthY <= iDstWidthY || iSrcHeightY <= iDstHeightY) {
return RET_INVALIDPARAM;
}
if ((iSrcWidthY >> 1) == iDstWidthY && (iSrcHeightY >> 1) == iDstHeightY) {
// use half average functions
uint8_t iAlignIndex = GetAlignedIndex (iSrcWidthY);
m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0],
(uint8_t*)pSrcPixMap->pPixel[0], pSrcPixMap->iStride[0], iSrcWidthY, iSrcHeightY);
iAlignIndex = GetAlignedIndex (iSrcWidthUV);
m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1],
(uint8_t*)pSrcPixMap->pPixel[1], pSrcPixMap->iStride[1], iSrcWidthUV, iSrcHeightUV);
m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2],
(uint8_t*)pSrcPixMap->pPixel[2], pSrcPixMap->iStride[2], iSrcWidthUV, iSrcHeightUV);
} else {
m_pfDownsample.pfGeneralRatioLuma ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0], iDstWidthY, iDstHeightY,
(uint8_t*)pSrcPixMap->pPixel[0], pSrcPixMap->iStride[0], iSrcWidthY, iSrcHeightY);
m_pfDownsample.pfGeneralRatioChroma ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1], iDstWidthUV, iDstHeightUV,
(uint8_t*)pSrcPixMap->pPixel[1], pSrcPixMap->iStride[1], iSrcWidthUV, iSrcHeightUV);
m_pfDownsample.pfGeneralRatioChroma ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2], iDstWidthUV, iDstHeightUV,
(uint8_t*)pSrcPixMap->pPixel[2], pSrcPixMap->iStride[2], iSrcWidthUV, iSrcHeightUV);
}
return RET_SUCCESS;
}
int32_t CDownsampling::GetAlignedIndex (const int32_t kiSrcWidth) {
int32_t iAlignIndex;
if ((kiSrcWidth & 0x1f) == 0) // x32
iAlignIndex = 0;
else if ((kiSrcWidth & 0x0f) == 0) // x16
iAlignIndex = 1;
else if ((kiSrcWidth & 0x07) == 0) // x8
iAlignIndex = 2;
else
iAlignIndex = 3;
return iAlignIndex;
}
WELSVP_NAMESPACE_END