1 /*! 2 * \copy 3 * Copyright (c) 2009-2013, 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 * \file : ScrollDetectionFuncs.h 32 * 33 * \brief : scroll detection class of wels video processor class 34 * 35 * \date : 2011/04/26 36 * 37 * \description : rewrite the package code of scroll detection class 38 * 39 ************************************************************************************* 40 */ 41 42 WELSVP_NAMESPACE_BEGIN 43 44 #define MINIMUM_DETECT_WIDTH 50 // no less than 16 45 #define CHECK_OFFSET 25 46 #define MAX_SCROLL_MV_Y 511 47 #define REGION_NUMBER 9 48 #define RECORD_COLOR(a, x) \ 49 { \ 50 int32_t _t = (uint8_t)(a); \ 51 x[_t>>5] |= (1 << (_t&31)); \ 52 } 53 54 int32_t CheckLine (uint8_t* pData, int32_t iWidth); 55 int32_t SelectTestLine (uint8_t* pY, int32_t iWidth, int32_t iHeight, int32_t iPicHeight, 56 int32_t iStride, int32_t iOffsetX, int32_t iOffsetY); 57 int32_t CompareLine (uint8_t* pYSrc, uint8_t* pYRef, const int32_t kiWidth); 58 void ScrollDetectionCore (SPixMap* pSrcPixMap, SPixMap* pRefPixMap, int32_t iWidth, int32_t iHeight, 59 int32_t iOffsetX, int32_t iOffsetY, SScrollDetectionParam& sScrollDetectionParam); 60 61 WELSVP_NAMESPACE_END 62