ref: 3026958bdeac14c16f76fb354e441e6b702f55e3
dir: /codec/processing/src/scenechangedetection/SceneChangeDetection.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 : SceneChangeDetection.h * * \brief : scene change detection class of wels video processor class * * \date : 2011/03/14 * * \description : 1. rewrite the package code of scene change detection class * ************************************************************************************* */ #ifndef WELSVP_SCENECHANGEDETECTION_H #define WELSVP_SCENECHANGEDETECTION_H #include "util.h" #include "memory.h" #include "cpu.h" #include "WelsFrameWork.h" #include "IWelsVP.h" #include "common.h" #define HIGH_MOTION_BLOCK_THRESHOLD 320 #define SCENE_CHANGE_MOTION_RATIO_LARGE 0.85f #define SCENE_CHANGE_MOTION_RATIO_MEDIUM 0.50f WELSVP_NAMESPACE_BEGIN class CSceneChangeDetectorVideo { public: CSceneChangeDetectorVideo(SSceneChangeResult & sParam, int32_t iCpuFlag) : m_sParam(sParam) { m_pfSad = WelsSampleSad8x8_c; #ifdef X86_ASM if (iCpuFlag & WELS_CPU_SSE2){ m_pfSad = WelsSampleSad8x8_sse21; } #endif #ifdef HAVE_NEON if (iCpuFlag & WELS_CPU_NEON){ m_pfSad = WelsProcessingSampleSad8x8_neon; } #endif } virtual ~CSceneChangeDetectorVideo() { } void operator () (uint8_t* pSrcY, int32_t iSrcStrideY, uint8_t* pRefY, int32_t iRefStrideY, uint8_t *& pStaticBlockIdc) { int32_t iSad = m_pfSad(pSrcY, iSrcStrideY, pRefY, iSrcStrideY); m_sParam.iMotionBlockNum += iSad > HIGH_MOTION_BLOCK_THRESHOLD; } protected: SadFuncPtr m_pfSad; SSceneChangeResult &m_sParam; }; class CSceneChangeDetectorScreen : public CSceneChangeDetectorVideo{ public: CSceneChangeDetectorScreen(SSceneChangeResult & sParam, int32_t iCpuFlag) : CSceneChangeDetectorVideo(sParam, iCpuFlag) { } virtual ~CSceneChangeDetectorScreen() { } void operator() (uint8_t* pSrcY, int32_t iSrcStrideY, uint8_t* pRefY, int32_t iRefStrideY, uint8_t *& pStaticBlockIdc) { int32_t iSad = m_pfSad(pSrcY, iSrcStrideY, pRefY, iSrcStrideY); if( iSad == 0 ){ *pStaticBlockIdc ++ = COLLOCATED_STATIC; } else { m_sParam.iFrameComplexity += iSad; m_sParam.iMotionBlockNum += iSad > HIGH_MOTION_BLOCK_THRESHOLD; *pStaticBlockIdc ++ = NO_STATIC; } } }; template<typename T> class CSceneChangeDetection : public IStrategy { public: CSceneChangeDetection (EMethods eMethod, int32_t iCpuFlag): m_cDetector(m_sSceneChangeParam, iCpuFlag) { m_eMethod = eMethod; WelsMemset (&m_sSceneChangeParam, 0, sizeof (m_sSceneChangeParam)); } ~CSceneChangeDetection(){ } EResult Process (int32_t iType, SPixMap* pSrcPixMap, SPixMap* pRefPixMap){ EResult eReturn = RET_INVALIDPARAM; int32_t iWidth = pSrcPixMap->sRect.iRectWidth; int32_t iHeight = pSrcPixMap->sRect.iRectHeight; int32_t iBlock8x8Width = iWidth >> 3; int32_t iBlock8x8Height = iHeight >> 3; int32_t iBlock8x8Num = iBlock8x8Width * iBlock8x8Height; int32_t iSceneChangeThresholdLarge = WelsStaticCast (int32_t, SCENE_CHANGE_MOTION_RATIO_LARGE * iBlock8x8Num + 0.5f + PESN); int32_t iSceneChangeThresholdMedium = WelsStaticCast(int32_t, SCENE_CHANGE_MOTION_RATIO_MEDIUM * iBlock8x8Num + 0.5f + PESN); uint8_t* pRefY = NULL, *pCurY = NULL; int32_t iRefStride = 0, iCurStride = 0; int32_t iRefRowStride = 0, iCurRowStride = 0; uint8_t* pRefTmp = NULL, *pCurTmp = NULL; uint8_t * pStaticBlockIdc = m_sSceneChangeParam.pStaticBlockIdc; pRefY = (uint8_t*)pRefPixMap->pPixel[0]; pCurY = (uint8_t*)pSrcPixMap->pPixel[0]; iRefStride = pRefPixMap->iStride[0]; iCurStride = pSrcPixMap->iStride[0]; iRefRowStride = pRefPixMap->iStride[0] << 3; iCurRowStride = pSrcPixMap->iStride[0] << 3; m_sSceneChangeParam.iMotionBlockNum = 0; m_sSceneChangeParam.iFrameComplexity = 0; m_sSceneChangeParam.eSceneChangeIdc = SIMILAR_SCENE; for (int32_t j = 0; j < iBlock8x8Height; j ++) { pRefTmp = pRefY; pCurTmp = pCurY; for (int32_t i = 0; i < iBlock8x8Width; i++) { m_cDetector(pRefTmp, iRefStride, pCurTmp, iCurStride, pStaticBlockIdc); pRefTmp += 8; pCurTmp += 8; } pRefY += iRefRowStride; pCurY += iCurRowStride; } if (m_sSceneChangeParam.iMotionBlockNum >= iSceneChangeThresholdLarge) { m_sSceneChangeParam.eSceneChangeIdc = LARGE_CHANGED_SCENE; } else if( m_sSceneChangeParam.iMotionBlockNum >= iSceneChangeThresholdMedium ){ m_sSceneChangeParam.eSceneChangeIdc = MEDIUM_CHANGED_SCENE; } eReturn = RET_SUCCESS; return eReturn; } EResult Get (int32_t iType, void* pParam) { if (pParam == NULL) { return RET_INVALIDPARAM; } * (SSceneChangeResult*)pParam = m_sSceneChangeParam; return RET_SUCCESS; } EResult Set(int32_t iType, void * pParam) { if( pParam == NULL ){ return RET_INVALIDPARAM; } m_sSceneChangeParam = *(SSceneChangeResult*)pParam; return RET_SUCCESS; } private: SSceneChangeResult m_sSceneChangeParam; T m_cDetector; }; IStrategy * BuildSceneChangeDetection(EMethods eMethod, int32_t iCpuFlag); WELSVP_NAMESPACE_END #endif