ref: 94a1d4426e26e01ee5170d2f3d404c124d329407
dir: /codec/processing/src/scrolldetection/ScrollDetection.cpp/
/*! * \copy * Copyright (c) 2009-2013, 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 "ScrollDetection.h" #include "ScrollDetectionFuncs.h" #include "cpu.h" WELSVP_NAMESPACE_BEGIN EResult CScrollDetection::Process (int32_t iType, SPixMap* pSrcPixMap, SPixMap* pRefPixMap) { if (pRefPixMap->pPixel[0] == NULL || pSrcPixMap->pPixel[0] == NULL || pRefPixMap->sRect.iRectWidth != pSrcPixMap->sRect.iRectWidth || pRefPixMap->sRect.iRectHeight != pSrcPixMap->sRect.iRectHeight) { return RET_INVALIDPARAM; } if (!m_sScrollDetectionParam.bMaskInfoAvailable) ScrollDetectionWithoutMask (pSrcPixMap, pRefPixMap); else ScrollDetectionWithMask (pSrcPixMap, pRefPixMap); return RET_SUCCESS; } EResult CScrollDetection::Set (int32_t iType, void* pParam) { if (pParam == NULL) { return RET_INVALIDPARAM; } m_sScrollDetectionParam = * ((SScrollDetectionParam*)pParam); return RET_SUCCESS; } EResult CScrollDetection::Get (int32_t iType, void* pParam) { if (pParam == NULL) { return RET_INVALIDPARAM; } * ((SScrollDetectionParam*)pParam) = m_sScrollDetectionParam; return RET_SUCCESS; } void CScrollDetection::ScrollDetectionWithMask (SPixMap* pSrcPixMap, SPixMap* pRefPixMap) { int32_t iStartX, iStartY, iWidth, iHeight; iStartX = m_sScrollDetectionParam.sMaskRect.iRectLeft; iStartY = m_sScrollDetectionParam.sMaskRect.iRectTop; iWidth = m_sScrollDetectionParam.sMaskRect.iRectWidth; iHeight = m_sScrollDetectionParam.sMaskRect.iRectHeight; iWidth /= 2; iStartX += iWidth / 2; m_sScrollDetectionParam.iScrollMvX = 0; m_sScrollDetectionParam.iScrollMvY = 0; m_sScrollDetectionParam.bScrollDetectFlag = false; if (iStartX >= 0 && iWidth > MINIMUM_DETECT_WIDTH && iHeight > 2 * CHECK_OFFSET) { ScrollDetectionCore (pSrcPixMap, pRefPixMap, iWidth, iHeight, iStartX, iStartY, m_sScrollDetectionParam); } } void CScrollDetection::ScrollDetectionWithoutMask (SPixMap* pSrcPixMap, SPixMap* pRefPixMap) { int32_t iStartX, iStartY, iWidth, iHeight; const int32_t kiPicBorderWidth = pSrcPixMap->sRect.iRectHeight >> 4; const int32_t kiRegionWidth = (int) (pSrcPixMap->sRect.iRectWidth - (kiPicBorderWidth << 1)) / 3; const int32_t kiRegionHeight = (pSrcPixMap->sRect.iRectHeight * 7) >> 3; const int32_t kiHieghtStride = (int) pSrcPixMap->sRect.iRectHeight * 5 / 24; for (int32_t i = 0; i < REGION_NUMBER; i++) { iStartX = kiPicBorderWidth + (i % 3) * kiRegionWidth; iStartY = -pSrcPixMap->sRect.iRectHeight * 7 / 48 + (int) (i / 3) * (kiHieghtStride); iWidth = kiRegionWidth; iHeight = kiRegionHeight; iWidth /= 2; iStartX += iWidth / 2; ScrollDetectionCore (pSrcPixMap, pRefPixMap, iWidth, iHeight, iStartX, iStartY, m_sScrollDetectionParam); if (m_sScrollDetectionParam.bScrollDetectFlag && m_sScrollDetectionParam.iScrollMvY) break; } } WELSVP_NAMESPACE_END