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/*
* Copyright (C) 2007-2008 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/**
*
* File Name: armVCCOMM_Average.c
* OpenMAX DL: v1.0.2
* Revision: 9641
* Date: Thursday, February 7, 2008
*
*
*
* Description:
* This function will calculate Average of two blocks if size iWidth X iHeight
*
*/
#include "omxtypes.h"
#include "armOMX.h"
#include "omxVC.h"
#include "armCOMM.h"
#include "armVC.h"
/**
* Function: armVCCOMM_Average
*
* Description:
* This function calculates the average of two blocks and stores the result.
*
* Remarks:
*
* [in] pPred0 Pointer to the top-left corner of reference block 0
* [in] pPred1 Pointer to the top-left corner of reference block 1
* [in] iPredStep0 Step of reference block 0
* [in] iPredStep1 Step of reference block 1
* [in] iDstStep Step of the destination buffer
* [in] iWidth Width of the blocks
* [in] iHeight Height of the blocks
* [out] pDstPred Pointer to the destination buffer
*
* Return Value:
* Standard OMXResult value.
*
*/
OMXResult 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
)
{
OMX_U32 x, y;
/* check for argument error */
armRetArgErrIf(pPred0 == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf(pPred1 == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf(pDstPred == NULL, OMX_Sts_BadArgErr)
for (y = 0; y < iHeight; y++)
{
for (x = 0; x < iWidth; x++)
{
pDstPred [y * iDstStep + x] =
(OMX_U8)(((OMX_U32)pPred0 [y * iPredStep0 + x] +
pPred1 [y * iPredStep1 + x] + 1) >> 1);
}
}
return OMX_Sts_NoErr;
}
/*****************************************************************************
* END OF FILE
*****************************************************************************/
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