ref: e8d045ad53c0d2041e3b45f52251661b048ef1d4
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"
#include <assert.h>
WELSVP_NAMESPACE_BEGIN
#define MAX_SAMPLE_WIDTH 1920
#define MAX_SAMPLE_HEIGHT 1088
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
CDownsampling::CDownsampling (int32_t iCpuFlag) {
m_iCPUFlag = iCpuFlag;
m_eMethod = METHOD_DOWNSAMPLE;
WelsMemset (&m_pfDownsample, 0, sizeof (m_pfDownsample));
InitDownsampleFuncs (m_pfDownsample, m_iCPUFlag);
WelsMemset(m_pSampleBuffer,0,sizeof(m_pSampleBuffer));
m_bNoSampleBuffer = AllocateSampleBuffer();
}
CDownsampling::~CDownsampling() {
FreeSampleBuffer();
}
bool CDownsampling::AllocateSampleBuffer() {
for (int32_t i = 0; i < 2; i++) {
m_pSampleBuffer[i][0] = (uint8_t*)WelsMalloc (MAX_SAMPLE_WIDTH * MAX_SAMPLE_HEIGHT);
if (!m_pSampleBuffer[i][0])
goto FREE_RET;
m_pSampleBuffer[i][1] = (uint8_t*)WelsMalloc (MAX_SAMPLE_WIDTH * MAX_SAMPLE_HEIGHT / 4);
if (!m_pSampleBuffer[i][1])
goto FREE_RET;
m_pSampleBuffer[i][2] = (uint8_t*)WelsMalloc (MAX_SAMPLE_WIDTH * MAX_SAMPLE_HEIGHT / 4);
if (!m_pSampleBuffer[i][2])
goto FREE_RET;
}
return false;
FREE_RET:
FreeSampleBuffer();
return true;
}
void CDownsampling::FreeSampleBuffer() {
for (int32_t i = 0; i < 2; i++) {
WelsFree (m_pSampleBuffer[i][0]);
m_pSampleBuffer[i][0] = NULL;
WelsFree (m_pSampleBuffer[i][1]);
m_pSampleBuffer[i][1] = NULL;
WelsFree (m_pSampleBuffer[i][2]);
m_pSampleBuffer[i][2] = NULL;
}
}
void CDownsampling::InitDownsampleFuncs (SDownsampleFuncs& sDownsampleFunc, int32_t iCpuFlag) {
sDownsampleFunc.pfHalfAverageWidthx32 = DyadicBilinearDownsampler_c;
sDownsampleFunc.pfHalfAverageWidthx16 = DyadicBilinearDownsampler_c;
sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_c;
sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_c;
sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsampler_c;
sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsampler_c;
#if defined(X86_ASM)
if (iCpuFlag & WELS_CPU_SSE) {
sDownsampleFunc.pfHalfAverageWidthx32 = DyadicBilinearDownsamplerWidthx32_sse;
sDownsampleFunc.pfHalfAverageWidthx16 = DyadicBilinearDownsamplerWidthx16_sse;
sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_sse;
}
if (iCpuFlag & WELS_CPU_SSE2) {
sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_sse2;
sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsamplerWrap_sse2;
}
if (iCpuFlag & WELS_CPU_SSSE3) {
sDownsampleFunc.pfHalfAverageWidthx32 = DyadicBilinearDownsamplerWidthx32_ssse3;
sDownsampleFunc.pfHalfAverageWidthx16 = DyadicBilinearDownsamplerWidthx16_ssse3;
sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_ssse3;
sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_ssse3;
sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsamplerWrap_ssse3;
}
if (iCpuFlag & WELS_CPU_SSE41) {
sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_sse4;
sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_sse4;
sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_sse41;
}
#ifdef HAVE_AVX2
if (iCpuFlag & WELS_CPU_AVX2) {
sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_avx2;
sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsamplerWrap_avx2;
}
#endif
#endif//X86_ASM
#if defined(HAVE_NEON)
if (iCpuFlag & WELS_CPU_NEON) {
sDownsampleFunc.pfHalfAverageWidthx32 = DyadicBilinearDownsamplerWidthx32_neon;
sDownsampleFunc.pfHalfAverageWidthx16 = DyadicBilinearDownsampler_neon;
sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_neon;
sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_neon;
sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_neon;
sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearAccurateDownsamplerWrap_neon;
}
#endif
#if defined(HAVE_NEON_AARCH64)
if (iCpuFlag & WELS_CPU_NEON) {
sDownsampleFunc.pfHalfAverageWidthx32 = DyadicBilinearDownsamplerWidthx32_AArch64_neon;
sDownsampleFunc.pfHalfAverageWidthx16 = DyadicBilinearDownsampler_AArch64_neon;
sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_AArch64_neon;
sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_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) > MAX_SAMPLE_WIDTH || (iSrcHeightY >> 1) > MAX_SAMPLE_HEIGHT || m_bNoSampleBuffer) {
if ((iSrcWidthY >> 1) == iDstWidthY && (iSrcHeightY >> 1) == iDstHeightY) {
// use half average functions
DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0],
(uint8_t*)pSrcPixMap->pPixel[0], pSrcPixMap->iStride[0], iSrcWidthY, iSrcHeightY);
DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1],
(uint8_t*)pSrcPixMap->pPixel[1], pSrcPixMap->iStride[1], iSrcWidthUV, iSrcHeightUV);
DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2],
(uint8_t*)pSrcPixMap->pPixel[2], pSrcPixMap->iStride[2], iSrcWidthUV, iSrcHeightUV);
} else if ((iSrcWidthY >> 2) == iDstWidthY && (iSrcHeightY >> 2) == iDstHeightY) {
m_pfDownsample.pfQuarterDownsampler ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0],
(uint8_t*)pSrcPixMap->pPixel[0], pSrcPixMap->iStride[0], iSrcWidthY, iSrcHeightY);
m_pfDownsample.pfQuarterDownsampler ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1],
(uint8_t*)pSrcPixMap->pPixel[1], pSrcPixMap->iStride[1], iSrcWidthUV, iSrcHeightUV);
m_pfDownsample.pfQuarterDownsampler ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2],
(uint8_t*)pSrcPixMap->pPixel[2], pSrcPixMap->iStride[2], iSrcWidthUV, iSrcHeightUV);
} else if ((iSrcWidthY / 3) == iDstWidthY && (iSrcHeightY / 3) == iDstHeightY) {
m_pfDownsample.pfOneThirdDownsampler ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0],
(uint8_t*)pSrcPixMap->pPixel[0], pSrcPixMap->iStride[0], iSrcWidthY, iDstHeightY);
m_pfDownsample.pfOneThirdDownsampler ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1],
(uint8_t*)pSrcPixMap->pPixel[1], pSrcPixMap->iStride[1], iSrcWidthUV, iDstHeightUV);
m_pfDownsample.pfOneThirdDownsampler ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2],
(uint8_t*)pSrcPixMap->pPixel[2], pSrcPixMap->iStride[2], iSrcWidthUV, iDstHeightUV);
} 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);
}
} else {
int32_t iIdx = 0;
int32_t iHalfSrcWidth = iSrcWidthY >> 1;
int32_t iHalfSrcHeight = iSrcHeightY >> 1;
uint8_t* pSrcY = (uint8_t*)pSrcPixMap->pPixel[0];
uint8_t* pSrcU = (uint8_t*)pSrcPixMap->pPixel[1];
uint8_t* pSrcV = (uint8_t*)pSrcPixMap->pPixel[2];
int32_t iSrcStrideY = pSrcPixMap->iStride[0];
int32_t iSrcStrideU = pSrcPixMap->iStride[1];
int32_t iSrcStrideV = pSrcPixMap->iStride[2];
int32_t iDstStrideY = pDstPixMap->iStride[0];
int32_t iDstStrideU = pDstPixMap->iStride[1];
int32_t iDstStrideV = pDstPixMap->iStride[2];
uint8_t* pDstY = (uint8_t*)m_pSampleBuffer[iIdx][0];
uint8_t* pDstU = (uint8_t*)m_pSampleBuffer[iIdx][1];
uint8_t* pDstV = (uint8_t*)m_pSampleBuffer[iIdx][2];
iIdx++;
do {
if ((iHalfSrcWidth == iDstWidthY) && (iHalfSrcHeight == iDstHeightY)) { //end
// use half average functions
DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0],
(uint8_t*)pSrcY, iSrcStrideY, iSrcWidthY, iSrcHeightY);
DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1],
(uint8_t*)pSrcU, iSrcStrideU, iSrcWidthUV, iSrcHeightUV);
DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2],
(uint8_t*)pSrcV, iSrcStrideV, iSrcWidthUV, iSrcHeightUV);
break;
} else if ((iHalfSrcWidth > iDstWidthY) && (iHalfSrcHeight > iDstHeightY)){
// use half average functions
iDstStrideY = WELS_ALIGN (iHalfSrcWidth, 32);
iDstStrideU = WELS_ALIGN (iHalfSrcWidth >> 1, 32);
iDstStrideV = WELS_ALIGN (iHalfSrcWidth >> 1, 32);
DownsampleHalfAverage ((uint8_t*)pDstY, iDstStrideY,
(uint8_t*)pSrcY, iSrcStrideY, iSrcWidthY, iSrcHeightY);
DownsampleHalfAverage ((uint8_t*)pDstU, iDstStrideU,
(uint8_t*)pSrcU, iSrcStrideU, iSrcWidthUV, iSrcHeightUV);
DownsampleHalfAverage ((uint8_t*)pDstV, iDstStrideV,
(uint8_t*)pSrcV, iSrcStrideV, iSrcWidthUV, iSrcHeightUV);
pSrcY = (uint8_t*)pDstY;
pSrcU = (uint8_t*)pDstU;
pSrcV = (uint8_t*)pDstV;
iSrcWidthY = iHalfSrcWidth;
iSrcWidthUV = iHalfSrcWidth >> 1;
iSrcHeightY = iHalfSrcHeight;
iSrcHeightUV = iHalfSrcHeight >> 1;
iSrcStrideY = iDstStrideY;
iSrcStrideU = iDstStrideU;
iSrcStrideV = iDstStrideV;
iHalfSrcWidth >>= 1;
iHalfSrcHeight >>= 1;
iIdx = iIdx % 2;
pDstY = (uint8_t*)m_pSampleBuffer[iIdx][0];
pDstU = (uint8_t*)m_pSampleBuffer[iIdx][1];
pDstV = (uint8_t*)m_pSampleBuffer[iIdx][2];
iIdx++;
} else {
m_pfDownsample.pfGeneralRatioLuma ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0], iDstWidthY, iDstHeightY,
(uint8_t*)pSrcY, iSrcStrideY, iSrcWidthY, iSrcHeightY);
m_pfDownsample.pfGeneralRatioChroma ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1], iDstWidthUV, iDstHeightUV,
(uint8_t*)pSrcU, iSrcStrideU, iSrcWidthUV, iSrcHeightUV);
m_pfDownsample.pfGeneralRatioChroma ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2], iDstWidthUV, iDstHeightUV,
(uint8_t*)pSrcV, iSrcStrideV, iSrcWidthUV, iSrcHeightUV);
break;
}
} while (true);
}
return RET_SUCCESS;
}
void CDownsampling::DownsampleHalfAverage (uint8_t* pDst, int32_t iDstStride,
uint8_t* pSrc, int32_t iSrcStride, int32_t iSrcWidth, int32_t iSrcHeight) {
if ((iSrcStride & 31) == 0) {
assert ((iDstStride & 15) == 0);
m_pfDownsample.pfHalfAverageWidthx32 (pDst, iDstStride,
pSrc, iSrcStride, WELS_ALIGN (iSrcWidth & ~1, 32), iSrcHeight);
} else {
assert ((iSrcStride & 15) == 0);
assert ((iDstStride & 7) == 0);
m_pfDownsample.pfHalfAverageWidthx16 (pDst, iDstStride,
pSrc, iSrcStride, WELS_ALIGN (iSrcWidth & ~1, 16), iSrcHeight);
}
}
WELSVP_NAMESPACE_END