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| 1 | +/*! | |
| 2 | + * \copy | |
| 3 | + * Copyright (c) 2013, Cisco Systems | |
| 4 | + * All rights reserved. | |
| 5 | + * | |
| 6 | + * Redistribution and use in source and binary forms, with or without | |
| 7 | + * modification, are permitted provided that the following conditions | |
| 8 | + * are met: | |
| 9 | + * | |
| 10 | + * * Redistributions of source code must retain the above copyright | |
| 11 | + * notice, this list of conditions and the following disclaimer. | |
| 12 | + * | |
| 13 | + * * Redistributions in binary form must reproduce the above copyright | |
| 14 | + * notice, this list of conditions and the following disclaimer in | |
| 15 | + * the documentation and/or other materials provided with the | |
| 16 | + * distribution. | |
| 17 | + * | |
| 18 | + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 | + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 | + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
| 21 | + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
| 22 | + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 23 | + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
| 24 | + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 25 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
| 26 | + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 27 | + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN | |
| 28 | + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 29 | + * POSSIBILITY OF SUCH DAMAGE. | |
| 30 | + * | |
| 31 | + */ | |
| 32 | + | |
| 33 | +#include "downsample.h" | |
| 34 | +#include "../common/cpu.h" | |
| 35 | + | |
| 36 | +WELSVP_NAMESPACE_BEGIN | |
| 37 | + | |
| 38 | + | |
| 39 | +/////////////////////////////////////////////////////////////////////////////////////////////////////////////// | |
| 40 | + | |
| 41 | +CDownsampling::CDownsampling (int32_t iCpuFlag) { | |
| 42 | + m_iCPUFlag = iCpuFlag; | |
| 43 | + m_eMethod = METHOD_DOWNSAMPLE; | |
| 44 | + WelsMemset (&m_pfDownsample, 0, sizeof (m_pfDownsample)); | |
| 45 | + InitDownsampleFuncs (m_pfDownsample, m_iCPUFlag); | |
| 46 | +} | |
| 47 | + | |
| 48 | +CDownsampling::~CDownsampling() { | |
| 49 | +} | |
| 50 | + | |
| 51 | +void CDownsampling::InitDownsampleFuncs (SDownsampleFuncs& sDownsampleFunc, int32_t iCpuFlag) { | |
| 52 | + sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsampler_c; | |
| 53 | + sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsampler_c; | |
| 54 | + sDownsampleFunc.pfHalfAverage[2] = DyadicBilinearDownsampler_c; | |
| 55 | + sDownsampleFunc.pfHalfAverage[3] = DyadicBilinearDownsampler_c; | |
| 56 | + sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsampler_c; | |
| 57 | + sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsampler_c; | |
| 58 | +#if defined(X86_ASM) | |
| 59 | + if (iCpuFlag & WELS_CPU_SSE) { | |
| 60 | + /* sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_sse; | |
| 61 | + sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsamplerWidthx16_sse; | |
| 62 | + sDownsampleFunc.pfHalfAverage[2] = DyadicBilinearDownsamplerWidthx8_sse;*/ | |
| 63 | + } | |
| 64 | + if (iCpuFlag & WELS_CPU_SSE2) { | |
| 65 | + // sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_sse2; | |
| 66 | + // sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsamplerWrap_sse2; | |
| 67 | + } | |
| 68 | + if (iCpuFlag & WELS_CPU_SSSE3) { | |
| 69 | + // sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_ssse3; | |
| 70 | + // sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsamplerWidthx16_ssse3; | |
| 71 | + } | |
| 72 | + if (iCpuFlag & WELS_CPU_SSE41) { | |
| 73 | + // sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_sse4; | |
| 74 | + // sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsamplerWidthx16_sse4; | |
| 75 | + } | |
| 76 | +#endif//X86_ASM | |
| 77 | + | |
| 78 | +} | |
| 79 | + | |
| 80 | +EResult CDownsampling::Process (int32_t iType, SPixMap* pSrcPixMap, SPixMap* pDstPixMap) { | |
| 81 | + int32_t iSrcWidthY = pSrcPixMap->sRect.iRectWidth; | |
| 82 | + int32_t iSrcHeightY = pSrcPixMap->sRect.iRectHeight; | |
| 83 | + int32_t iDstWidthY = pDstPixMap->sRect.iRectWidth; | |
| 84 | + int32_t iDstHeightY = pDstPixMap->sRect.iRectHeight; | |
| 85 | + | |
| 86 | + int32_t iSrcWidthUV = iSrcWidthY >> 1; | |
| 87 | + int32_t iSrcHeightUV = iSrcHeightY >> 1; | |
| 88 | + int32_t iDstWidthUV = iDstWidthY >> 1; | |
| 89 | + int32_t iDstHeightUV = iDstHeightY >> 1; | |
| 90 | + | |
| 91 | + if (iSrcWidthY <= iDstWidthY || iSrcHeightY <= iDstHeightY) { | |
| 92 | + return RET_INVALIDPARAM; | |
| 93 | + } | |
| 94 | + | |
| 95 | + if ((iSrcWidthY >> 1) == iDstWidthY && (iSrcHeightY >> 1) == iDstHeightY) { | |
| 96 | + // use half average functions | |
| 97 | + uint8_t iAlignIndex = 3; | |
| 98 | + | |
| 99 | + iAlignIndex = GetAlignedIndex (iSrcWidthY); | |
| 100 | + m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0], | |
| 101 | + (uint8_t*)pSrcPixMap->pPixel[0], pSrcPixMap->iStride[0], iSrcWidthY, iSrcHeightY); | |
| 102 | + | |
| 103 | + iAlignIndex = GetAlignedIndex (iSrcWidthUV); | |
| 104 | + m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1], | |
| 105 | + (uint8_t*)pSrcPixMap->pPixel[1], pSrcPixMap->iStride[1], iSrcWidthUV, iSrcHeightUV); | |
| 106 | + m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2], | |
| 107 | + (uint8_t*)pSrcPixMap->pPixel[2], pSrcPixMap->iStride[2], iSrcWidthUV, iSrcHeightUV); | |
| 108 | + } else { | |
| 109 | + m_pfDownsample.pfGeneralRatioLuma ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0], iDstWidthY, iDstHeightY, | |
| 110 | + (uint8_t*)pSrcPixMap->pPixel[0], pSrcPixMap->iStride[0], iSrcWidthY, iSrcHeightY); | |
| 111 | + | |
| 112 | + m_pfDownsample.pfGeneralRatioChroma ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1], iDstWidthUV, iDstHeightUV, | |
| 113 | + (uint8_t*)pSrcPixMap->pPixel[1], pSrcPixMap->iStride[1], iSrcWidthUV, iSrcHeightUV); | |
| 114 | + | |
| 115 | + m_pfDownsample.pfGeneralRatioChroma ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2], iDstWidthUV, iDstHeightUV, | |
| 116 | + (uint8_t*)pSrcPixMap->pPixel[2], pSrcPixMap->iStride[2], iSrcWidthUV, iSrcHeightUV); | |
| 117 | + } | |
| 118 | + return RET_SUCCESS; | |
| 119 | +} | |
| 120 | + | |
| 121 | +int32_t CDownsampling::GetAlignedIndex (const int32_t kiSrcWidth) { | |
| 122 | + int32_t iAlignIndex = 3; | |
| 123 | + if ((kiSrcWidth & 0x1f) == 0) // x32 | |
| 124 | + iAlignIndex = 0; | |
| 125 | + else if ((kiSrcWidth & 0x0f) == 0) // x16 | |
| 126 | + iAlignIndex = 1; | |
| 127 | + else if ((kiSrcWidth & 0x07) == 0) // x8 | |
| 128 | + iAlignIndex = 2; | |
| 129 | + else | |
| 130 | + iAlignIndex = 3; | |
| 131 | + return iAlignIndex; | |
| 132 | +} | |
| 133 | + | |
| 134 | + | |
| 135 | +WELSVP_NAMESPACE_END | |