armVCM4P10_SADQuar.c revision 0c1bc742181ded4930842b46e9507372f0b1b963 
1/**
2 *
3 * File Name:  armVCM4P10_SADQuar.c
4 * OpenMAX DL: v1.0.2
5 * Revision:   9641
6 * Date:       Thursday, February 7, 2008
7 *
8 * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved.
9 *
10 *
11 * Description:
12 * This function will calculate SAD of pSrc with average of two Ref blocks
13 *
14 */
15
16#include "omxtypes.h"
17#include "armOMX.h"
18
19#include "armVC.h"
20#include "armCOMM.h"
21
22/**
23 * Function: armVCM4P10_SADQuar
24 *
25 * Description:
26 * This function calculates the SAD between one block (pSrc) and the
27 * average of the other two (pSrcRef0 and pSrcRef1)
28 *
29 * Remarks:
30 *
31 * [in]		pSrc				Pointer to the original block
32 * [in]		pSrcRef0		Pointer to reference block 0
33 * [in]		pSrcRef1		Pointer to reference block 1
34 * [in]		iSrcStep 		Step of the original block buffer
35 * [in]		iRefStep0		Step of reference block 0
36 * [in]		iRefStep1 	Step of reference block 1
37 * [in]		iHeight			Height of the block
38 * [in]		iWidth			Width of the block
39 * [out]	pDstSAD			Pointer of result SAD
40 *
41 * Return Value:
42 * Standard OMXResult value.
43 *
44 */
45OMXResult armVCM4P10_SADQuar(
46	const OMX_U8* 	pSrc,
47    const OMX_U8* 	pSrcRef0,
48	const OMX_U8* 	pSrcRef1,
49    OMX_U32 	iSrcStep,
50    OMX_U32		iRefStep0,
51    OMX_U32		iRefStep1,
52    OMX_U32*	pDstSAD,
53    OMX_U32     iHeight,
54    OMX_U32     iWidth
55)
56{
57    OMX_INT     x, y;
58    OMX_S32     SAD = 0;
59
60    /* check for argument error */
61    armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr)
62    armRetArgErrIf(pSrcRef0 == NULL, OMX_Sts_BadArgErr)
63    armRetArgErrIf(pSrcRef1 == NULL, OMX_Sts_BadArgErr)
64    armRetArgErrIf(pDstSAD == NULL, OMX_Sts_BadArgErr)
65
66    for (y = 0; y < iHeight; y++)
67    {
68        for (x = 0; x < iWidth; x++)
69        {
70            SAD += armAbs(pSrc [y * iSrcStep + x] - ((
71                    pSrcRef0 [y * iRefStep0 + x] +
72                    pSrcRef1 [y * iRefStep1 + x] + 1) >> 1));
73        }
74    }
75
76    *pDstSAD = SAD;
77
78    return OMX_Sts_NoErr;
79}
80
81/*****************************************************************************
82 *                              END OF FILE
83 *****************************************************************************/
84
85