ref: 6a2a4efef66f625a4fe15be1bff7dc5caaf5c4c8
dir: /codec/processing/src/scrolldetection/ScrollDetectionFuncs.h/
/*!
* \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.
*
* \file : ScrollDetectionFuncs.h
*
* \brief : scroll detection class of wels video processor class
*
* \date : 2011/04/26
*
* \description : rewrite the package code of scroll detection class
*
*************************************************************************************
*/
WELSVP_NAMESPACE_BEGIN
#define MINIMUM_DETECT_WIDTH 50 // no less than 16
#define CHECK_OFFSET 25
#define MAX_SCROLL_MV_Y 511
#define REGION_NUMBER 9
#define RECORD_COLOR(a, x) \
{ \
int32_t _t = (uint8_t)(a); \
x[_t>>5] |= (1 << (_t&31)); \
}
int32_t CheckLine (uint8_t* pData, int32_t iWidth);
int32_t SelectTestLine (uint8_t* pY, int32_t iWidth, int32_t iHeight, int32_t iPicHeight,
int32_t iStride, int32_t iOffsetX, int32_t iOffsetY);
int32_t CompareLine (uint8_t* pYSrc, uint8_t* pYRef, const int32_t kiWidth);
void ScrollDetectionCore (SPixMap* pSrcPixMap, SPixMap* pRefPixMap, int32_t iWidth, int32_t iHeight,
int32_t iOffsetX, int32_t iOffsetY, SScrollDetectionParam& sScrollDetectionParam);
WELSVP_NAMESPACE_END