Showing the changes to codec/processing/src/scenechangedetection/SceneChangeDetection.cpp (1 of 124 files). Show all
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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 "SceneChangeDetection.h" | ||
| 34 | #include "../common/cpu.h" | ||
| 35 | |||
| 36 | WELSVP_NAMESPACE_BEGIN | ||
| 37 | |||
| 38 | #define HIGH_MOTION_BLOCK_THRESHOLD 320 | ||
| 39 | #define SCENE_CHANGE_MOTION_RATIO 0.85f | ||
| 40 | |||
| 41 | |||
| 42 | |||
| 43 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
| 44 | |||
| 45 | CSceneChangeDetection::CSceneChangeDetection (int32_t iCpuFlag) { | ||
| 46 | m_iCpuFlag = iCpuFlag; | ||
| 47 | m_eMethod = METHOD_SCENE_CHANGE_DETECTION; | ||
| 48 | m_pfSad = NULL; | ||
| 49 | WelsMemset (&m_sSceneChangeParam, 0, sizeof (m_sSceneChangeParam)); | ||
| 50 | InitSadFuncs (m_pfSad, m_iCpuFlag); | ||
| 51 | } | ||
| 52 | |||
| 53 | CSceneChangeDetection::~CSceneChangeDetection() { | ||
| 54 | } | ||
| 55 | |||
| 56 | EResult CSceneChangeDetection::Process (int32_t iType, SPixMap* pSrcPixMap, SPixMap* pRefPixMap) { | ||
| 57 | EResult eReturn = RET_INVALIDPARAM; | ||
| 58 | |||
| 59 | int32_t iWidth = pSrcPixMap->sRect.iRectWidth; | ||
| 60 | int32_t iHeight = pSrcPixMap->sRect.iRectHeight; | ||
| 61 | int32_t iBlock8x8Width = iWidth >> 3; | ||
| 62 | int32_t iBlock8x8Height = iHeight >> 3; | ||
| 63 | int32_t iBlock8x8Num = iBlock8x8Width * iBlock8x8Height; | ||
| 64 | int32_t iSceneChangeThreshold = WelsStaticCast (int32_t, SCENE_CHANGE_MOTION_RATIO * iBlock8x8Num + 0.5f + PESN); | ||
| 65 | |||
| 66 | int32_t iBlockSad = 0; | ||
| 67 | int32_t iMotionBlockNum = 0; | ||
| 68 | |||
| 69 | uint8_t* pRefY = NULL, *pCurY = NULL; | ||
| 70 | int32_t iRefStride = 0, iCurStride = 0; | ||
| 71 | int32_t iRefRowStride = 0, iCurRowStride = 0; | ||
| 72 | |||
| 73 | uint8_t* pRefTmp = NULL, *pCurTmp = NULL; | ||
| 74 | |||
| 75 | pRefY = (uint8_t*)pRefPixMap->pPixel[0]; | ||
| 76 | pCurY = (uint8_t*)pSrcPixMap->pPixel[0]; | ||
| 77 | |||
| 78 | iRefStride = pRefPixMap->iStride[0]; | ||
| 79 | iCurStride = pSrcPixMap->iStride[0]; | ||
| 80 | |||
| 81 | iRefRowStride = pRefPixMap->iStride[0] << 3; | ||
| 82 | iCurRowStride = pSrcPixMap->iStride[0] << 3; | ||
| 83 | |||
| 84 | m_sSceneChangeParam.bSceneChangeFlag = 0; | ||
| 85 | |||
| 86 | for (int32_t j = 0; j < iBlock8x8Height; j ++) { | ||
| 87 | pRefTmp = pRefY; | ||
| 88 | pCurTmp = pCurY; | ||
| 89 | |||
| 90 | for (int32_t i = 0; i < iBlock8x8Width; i++) { | ||
| 91 | iBlockSad = m_pfSad (pRefTmp, iRefStride, pCurTmp, iCurStride); | ||
| 92 | |||
| 93 | iMotionBlockNum += (iBlockSad > HIGH_MOTION_BLOCK_THRESHOLD); | ||
| 94 | |||
| 95 | pRefTmp += 8; | ||
| 96 | pCurTmp += 8; | ||
| 97 | } | ||
| 98 | |||
| 99 | pRefY += iRefRowStride; | ||
| 100 | pCurY += iCurRowStride; | ||
| 101 | } | ||
| 102 | |||
| 103 | if (iMotionBlockNum >= iSceneChangeThreshold) { | ||
| 104 | m_sSceneChangeParam.bSceneChangeFlag = 1; | ||
| 105 | } | ||
| 106 | |||
| 107 | eReturn = RET_SUCCESS; | ||
| 108 | |||
| 109 | return eReturn; | ||
| 110 | } | ||
| 111 | |||
| 112 | |||
| 113 | EResult CSceneChangeDetection::Get (int32_t iType, void* pParam) { | ||
| 114 | if (pParam == NULL) { | ||
| 115 | return RET_INVALIDPARAM; | ||
| 116 | } | ||
| 117 | |||
| 118 | * (SSceneChangeResult*)pParam = m_sSceneChangeParam; | ||
| 119 | |||
| 120 | return RET_SUCCESS; | ||
| 121 | } | ||
| 122 | |||
| 123 | /////////////////////////////////////////////////////////////////////////////////////////////// | ||
| 124 | |||
| 125 | void CSceneChangeDetection::InitSadFuncs (SadFuncPtr& pfSad, int32_t iCpuFlag) { | ||
| 126 | pfSad = WelsSampleSad8x8_c; | ||
| 127 | |||
| 128 | #ifdef X86_ASM | ||
| 129 | if (iCpuFlag & WELS_CPU_SSE2) { | ||
| 130 | pfSad = WelsSampleSad8x8_sse21; | ||
| 131 | } | ||
| 132 | #endif | ||
| 133 | } | ||
| 134 | |||
| 135 | |||
| 136 | WELSVP_NAMESPACE_END | ||