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/**
*
* File Name: omxVCM4P10_Average_4x.c
* OpenMAX DL: v1.0.2
* Revision: 9641
* Date: Thursday, February 7, 2008
*
* (c) Copyright 2007-2008 ARM Limited. All Rights Reserved.
*
*
* Description:
* This function will calculate Average of two 4x4 or 4x8 blocks
*
*/
#include "omxtypes.h"
#include "armOMX.h"
#include "omxVC.h"
#include "armCOMM.h"
#include "armVC.h"
/**
* Function: omxVCM4P10_Average_4x (6.3.5.5.3)
*
* Description:
* This function calculates the average of two 4x4, 4x8 blocks. The result
* is rounded according to (a+b+1)/2.
*
* Input Arguments:
*
* pPred0 - Pointer to the top-left corner of reference block 0
* pPred1 - Pointer to the top-left corner of reference block 1
* iPredStep0 - Step of reference block 0; must be a multiple of 4.
* iPredStep1 - Step of reference block 1; must be a multiple of 4.
* iDstStep - Step of the destination buffer; must be a multiple of 4.
* iHeight - Height of the blocks; must be either 4 or 8.
*
* Output Arguments:
*
* pDstPred - Pointer to the destination buffer. 4-byte alignment required.
*
* Return Value:
*
* OMX_Sts_NoErr - no error
* OMX_Sts_BadArgErr - bad arguments; returned if any of the following
* conditions are true:
* - at least one of the following pointers is NULL:
* pPred0, pPred1, or pDstPred
* - pDstPred is not aligned on a 4-byte boundary
* - iPredStep0 <= 0 or iPredStep0 is not a multiple of 4
* - iPredStep1 <= 0 or iPredStep1 is not a multiple of 4
* - iDstStep <= 0 or iDstStep is not a multiple of 4
* - iHeight is not equal to either 4 or 8
*
*/
OMXResult omxVCM4P10_Average_4x (
const OMX_U8* pPred0,
const OMX_U8* pPred1,
OMX_U32 iPredStep0,
OMX_U32 iPredStep1,
OMX_U8* pDstPred,
OMX_U32 iDstStep,
OMX_U32 iHeight
)
{
/* check for argument error */
armRetArgErrIf(pPred0 == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf(pPred1 == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf(pDstPred == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf((iHeight != 4) && (iHeight != 8), OMX_Sts_BadArgErr)
armRetArgErrIf((iPredStep0 == 0) || (iPredStep0 & 3), OMX_Sts_BadArgErr)
armRetArgErrIf((iPredStep1 == 0) || (iPredStep1 & 3), OMX_Sts_BadArgErr)
armRetArgErrIf((iDstStep == 0) || (iDstStep & 3), OMX_Sts_BadArgErr)
armRetArgErrIf(armNot4ByteAligned(pDstPred), OMX_Sts_BadArgErr)
return armVCCOMM_Average
(pPred0, pPred1, iPredStep0, iPredStep1, pDstPred, iDstStep, 4, iHeight);
}
/*****************************************************************************
* END OF FILE
*****************************************************************************/
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