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/**
*
* File Name: omxVCM4P10_SADQuar_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 SAD of pSrc with average of two Ref blocks
* of 4x8 or 4x4 blocks
*
*/
#include "omxtypes.h"
#include "armOMX.h"
#include "omxVC.h"
#include "armVC.h"
#include "armCOMM.h"
/**
* Function: omxVCM4P10_SADQuar_4x (6.3.5.4.2)
*
* Description:
* This function calculates the SAD between one block (pSrc) and the average
* of the other two (pSrcRef0 and pSrcRef1) for 4x8 or 4x4 blocks. Rounding
* is applied according to the convention (a+b+1)>>1.
*
* Input Arguments:
*
* pSrc - Pointer to the original block; must be aligned on a 4-byte
* boundary.
* pSrcRef0 - Pointer to reference block 0
* pSrcRef1 - Pointer to reference block 1
* iSrcStep - Step of the original block buffer; must be a multiple of 4.
* iRefStep0 - Step of reference block 0
* iRefStep1 - Step of reference block 1
* iHeight - Height of the block; must be equal to either 4 or 8.
*
* Output Arguments:
*
* pDstSAD - Pointer of result SAD
*
* Return Value:
* OMX_Sts_NoErr, if the function runs without error.
* OMX_Sts_BadArgErr - bad arguments: if one of the following cases occurs:
* - iHeight is not equal to either 4 or 8.
* - One of more of the following pointers is NULL: pSrc, pSrcRef0,
* pSrcRef1, pDstSAD.
* - iSrcStep is not a multiple of 4
* - Any alignment restrictions are violated
*
*/
OMXResult omxVCM4P10_SADQuar_4x(
const OMX_U8* pSrc,
const OMX_U8* pSrcRef0,
const OMX_U8* pSrcRef1,
OMX_U32 iSrcStep,
OMX_U32 iRefStep0,
OMX_U32 iRefStep1,
OMX_U32* pDstSAD,
OMX_U32 iHeight
)
{
/* check for argument error */
armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr);
armRetArgErrIf(pSrcRef0 == NULL, OMX_Sts_BadArgErr);
armRetArgErrIf(pSrcRef1 == NULL, OMX_Sts_BadArgErr);
armRetArgErrIf(pDstSAD == NULL, OMX_Sts_BadArgErr);
armRetArgErrIf((iHeight != 8) && (iHeight != 4), OMX_Sts_BadArgErr);
armRetArgErrIf(armNot4ByteAligned(pSrc), OMX_Sts_BadArgErr);
armRetArgErrIf((iSrcStep == 0) || (iSrcStep & 3), OMX_Sts_BadArgErr);
return armVCM4P10_SADQuar
(pSrc, pSrcRef0, pSrcRef1, iSrcStep,
iRefStep0, iRefStep1, pDstSAD, iHeight, 4);
}
/*****************************************************************************
* END OF FILE
*****************************************************************************/
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