omxVCM4P10_SAD_4x.c revision 78e52bfac041d71ce53b5b13c2abf78af742b09d
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_SAD_4x.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 for 4x8 and 4x4 blocks 28 * 29 */ 30 31#include "omxtypes.h" 32#include "armOMX.h" 33#include "omxVC.h" 34 35#include "armVC.h" 36#include "armCOMM.h" 37 38/** 39 * Function: omxVCM4P10_SAD_4x (6.3.5.4.1) 40 * 41 * Description: 42 * This function calculates the SAD for 4x8 and 4x4 blocks. 43 * 44 * Input Arguments: 45 * 46 * pSrcOrg -Pointer to the original block; must be aligned on a 4-byte 47 * boundary. 48 * iStepOrg -Step of the original block buffer; must be a multiple of 4. 49 * pSrcRef -Pointer to the reference block 50 * iStepRef -Step of the reference block buffer 51 * iHeight -Height of the block; must be equal to either 4 or 8. 52 * 53 * Output Arguments: 54 * 55 * pDstSAD -Pointer of result SAD 56 * 57 * Return Value: 58 * OMX_Sts_NoErr, if the function runs without error. 59 * OMX_Sts_BadArgErr - bad arguments: if one of the following cases occurs: 60 * - One of more of the following pointers is NULL: 61 * pSrcOrg, pSrcRef, or pDstSAD 62 * - iHeight is not equal to either 4 or 8. 63 * - iStepOrg is not a multiple of 4 64 * - Any alignment restrictions are violated 65 * 66 */ 67OMXResult omxVCM4P10_SAD_4x( 68 const OMX_U8* pSrcOrg, 69 OMX_U32 iStepOrg, 70 const OMX_U8* pSrcRef, 71 OMX_U32 iStepRef, 72 OMX_S32* pDstSAD, 73 OMX_U32 iHeight 74) 75{ 76 /* check for argument error */ 77 armRetArgErrIf(pSrcOrg == NULL, OMX_Sts_BadArgErr) 78 armRetArgErrIf(pSrcRef == NULL, OMX_Sts_BadArgErr) 79 armRetArgErrIf(pDstSAD == NULL, OMX_Sts_BadArgErr) 80 armRetArgErrIf((iHeight != 8) && (iHeight != 4), OMX_Sts_BadArgErr) 81 armRetArgErrIf(armNot4ByteAligned(pSrcOrg), OMX_Sts_BadArgErr) 82 armRetArgErrIf((iStepOrg == 0) || (iStepOrg & 3), OMX_Sts_BadArgErr) 83 armRetArgErrIf((iStepRef == 0) || (iStepRef & 3), OMX_Sts_BadArgErr) 84 85 return armVCCOMM_SAD 86 (pSrcOrg, iStepOrg, pSrcRef, iStepRef, pDstSAD, iHeight, 4); 87} 88 89/***************************************************************************** 90 * END OF FILE 91 *****************************************************************************/ 92 93