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: armVCCOMM_Average.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 Average of two blocks if size iWidth X iHeight 28 * 29 */ 30 31 #include "omxtypes.h" 32 #include "armOMX.h" 33 #include "omxVC.h" 34 35 #include "armCOMM.h" 36 #include "armVC.h" 37 38 /** 39 * Function: armVCCOMM_Average 40 * 41 * Description: 42 * This function calculates the average of two blocks and stores the result. 43 * 44 * Remarks: 45 * 46 * [in] pPred0 Pointer to the top-left corner of reference block 0 47 * [in] pPred1 Pointer to the top-left corner of reference block 1 48 * [in] iPredStep0 Step of reference block 0 49 * [in] iPredStep1 Step of reference block 1 50 * [in] iDstStep Step of the destination buffer 51 * [in] iWidth Width of the blocks 52 * [in] iHeight Height of the blocks 53 * [out] pDstPred Pointer to the destination buffer 54 * 55 * Return Value: 56 * Standard OMXResult value. 57 * 58 */ armVCCOMM_Average(const OMX_U8 * pPred0,const OMX_U8 * pPred1,OMX_U32 iPredStep0,OMX_U32 iPredStep1,OMX_U8 * pDstPred,OMX_U32 iDstStep,OMX_U32 iWidth,OMX_U32 iHeight)59 OMXResult armVCCOMM_Average ( 60 const OMX_U8* pPred0, 61 const OMX_U8* pPred1, 62 OMX_U32 iPredStep0, 63 OMX_U32 iPredStep1, 64 OMX_U8* pDstPred, 65 OMX_U32 iDstStep, 66 OMX_U32 iWidth, 67 OMX_U32 iHeight 68 ) 69 { 70 OMX_U32 x, y; 71 72 /* check for argument error */ 73 armRetArgErrIf(pPred0 == NULL, OMX_Sts_BadArgErr) 74 armRetArgErrIf(pPred1 == NULL, OMX_Sts_BadArgErr) 75 armRetArgErrIf(pDstPred == NULL, OMX_Sts_BadArgErr) 76 77 for (y = 0; y < iHeight; y++) 78 { 79 for (x = 0; x < iWidth; x++) 80 { 81 pDstPred [y * iDstStep + x] = 82 (OMX_U8)(((OMX_U32)pPred0 [y * iPredStep0 + x] + 83 pPred1 [y * iPredStep1 + x] + 1) >> 1); 84 } 85 } 86 87 return OMX_Sts_NoErr; 88 } 89 90 /***************************************************************************** 91 * END OF FILE 92 *****************************************************************************/ 93 94