/*! * \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;     m_sScrollDetectionParam.iScrollMvX = 0;    m_sScrollDetectionParam.iScrollMvY = 0;    m_sScrollDetectionParam.bScrollDetectFlag = false;     ScrollDetectionCore (pSrcPixMap, pRefPixMap, iWidth, iHeight, iStartX, iStartY, m_sScrollDetectionParam);     if (m_sScrollDetectionParam.bScrollDetectFlag && m_sScrollDetectionParam.iScrollMvY)      break;  }} WELSVP_NAMESPACE_END