1/* 2 * Copyright (C) 2007-2008 ARM Limited 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 * 16 */ 17/** 18 * 19 * File Name: omxVCM4P10_SADQuar_8x.c 20 * OpenMAX DL: v1.0.2 21 * Revision: 9641 22 * Date: Thursday, February 7, 2008 23 * 24 * 25 * 26 * Description: 27 * This function will calculate SAD of pSrc with average of two Ref blocks 28 * of 8x16 or 8x8 or 8x4 29 * 30 */ 31 32#include "omxtypes.h" 33#include "armOMX.h" 34#include "omxVC.h" 35 36#include "armVC.h" 37#include "armCOMM.h" 38 39/** 40 * Function: omxVCM4P10_SADQuar_8x (6.3.5.4.3) 41 * 42 * Description: 43 * This function calculates the SAD between one block (pSrc) and the average 44 * of the other two (pSrcRef0 and pSrcRef1) for 8x16, 8x8, or 8x4 blocks. 45 * Rounding is applied according to the convention (a+b+1)>>1. 46 * 47 * Input Arguments: 48 * 49 * pSrc - Pointer to the original block; must be aligned on an 8-byte 50 * boundary. 51 * pSrcRef0 - Pointer to reference block 0 52 * pSrcRef1 - Pointer to reference block 1 53 * iSrcStep - Step of the original block buffer; must be a multiple of 8. 54 * iRefStep0 - Step of reference block 0 55 * iRefStep1 - Step of reference block 1 56 * iHeight - Height of the block; must be equal either 4, 8, or 16. 57 * 58 * Output Arguments: 59 * 60 * pDstSAD - Pointer of result SAD 61 * 62 * Return Value: 63 * OMX_Sts_NoErr, if the function runs without error. 64 * OMX_Sts_BadArgErr - bad arguments: if one of the following cases occurs: 65 * - iHeight is not equal to either 4, 8, or 16. 66 * - One of more of the following pointers is NULL: pSrc, pSrcRef0, 67 * pSrcRef1, pDstSAD. 68 * - iSrcStep is not a multiple of 8 69 * - Any alignment restrictions are violated 70 * 71 */ 72OMXResult omxVCM4P10_SADQuar_8x( 73 const OMX_U8* pSrc, 74 const OMX_U8* pSrcRef0, 75 const OMX_U8* pSrcRef1, 76 OMX_U32 iSrcStep, 77 OMX_U32 iRefStep0, 78 OMX_U32 iRefStep1, 79 OMX_U32* pDstSAD, 80 OMX_U32 iHeight 81) 82{ 83 /* check for argument error */ 84 armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr) 85 armRetArgErrIf(pSrcRef0 == NULL, OMX_Sts_BadArgErr) 86 armRetArgErrIf(pSrcRef1 == NULL, OMX_Sts_BadArgErr) 87 armRetArgErrIf(pDstSAD == NULL, OMX_Sts_BadArgErr) 88 armRetArgErrIf((iHeight != 16) && (iHeight != 8) && 89 (iHeight != 4), OMX_Sts_BadArgErr) 90 armRetArgErrIf(armNot8ByteAligned(pSrc), OMX_Sts_BadArgErr) 91 armRetArgErrIf((iSrcStep == 0) || (iSrcStep & 7), OMX_Sts_BadArgErr) 92 93 94 return armVCM4P10_SADQuar 95 (pSrc, pSrcRef0, pSrcRef1, iSrcStep, 96 iRefStep0, iRefStep1, pDstSAD, iHeight, 8); 97} 98 99/***************************************************************************** 100 * END OF FILE 101 *****************************************************************************/ 102 103