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      1 /**
      2  *
      3  * File Name:  omxVCCOMM_SAD_16x.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 for 16x16 and 16x8 blocks
     13  *
     14  */
     15 
     16 #include "omxtypes.h"
     17 #include "armOMX.h"
     18 #include "omxVC.h"
     19 
     20 #include "armVC.h"
     21 #include "armCOMM.h"
     22 
     23 /**
     24  * Function:  omxVCCOMM_SAD_16x   (6.1.4.1.4)
     25  *
     26  * Description:
     27  * This function calculates the SAD for 16x16 and 16x8 blocks.
     28  *
     29  * Input Arguments:
     30  *
     31  *   pSrcOrg - Pointer to the original block; must be aligned on a 16-byte
     32  *             boundary.
     33  *   iStepOrg - Step of the original block buffer
     34  *   pSrcRef  - Pointer to the reference block
     35  *   iStepRef - Step of the reference block buffer
     36  *   iHeight  - Height of the block
     37  *
     38  * Output Arguments:
     39  *
     40  *   pDstSAD - Pointer of result SAD
     41  *
     42  * Return Value:
     43  *
     44  *    OMX_Sts_NoErr - no error
     45  *    OMX_Sts_BadArgErr - bad arguments.  Returned if one or more of the
     46  *              following conditions is true:
     47  *    -    at least one of the following pointers is NULL:
     48  *         pSrcOrg, pDstSAD, or pSrcRef
     49  *    -    pSrcOrg is not 16-byte aligned.
     50  *    -    iStepOrg  <= 0 or iStepOrg is not a multiple of 16
     51  *    -    iStepRef <= 0 or iStepRef is not a multiple of 16
     52  *    -    iHeight is not 8 or 16
     53  *
     54  */
     55 OMXResult omxVCCOMM_SAD_16x(
     56 			const OMX_U8* 	pSrcOrg,
     57 			OMX_U32 	iStepOrg,
     58 			const OMX_U8* 	pSrcRef,
     59 			OMX_U32 	iStepRef,
     60 			OMX_S32*	pDstSAD,
     61 			OMX_U32		iHeight
     62 )
     63 {
     64     /* check for argument error */
     65     armRetArgErrIf(pSrcOrg == NULL, OMX_Sts_BadArgErr)
     66     armRetArgErrIf(pSrcRef == NULL, OMX_Sts_BadArgErr)
     67     armRetArgErrIf(pDstSAD == NULL, OMX_Sts_BadArgErr)
     68     armRetArgErrIf((iHeight != 16) && (iHeight != 8), OMX_Sts_BadArgErr)
     69     armRetArgErrIf(armNot16ByteAligned(pSrcOrg), OMX_Sts_BadArgErr)
     70     armRetArgErrIf((iStepOrg == 0) || (iStepOrg & 15), OMX_Sts_BadArgErr)
     71     armRetArgErrIf((iStepRef == 0) || (iStepRef & 15), OMX_Sts_BadArgErr)
     72 
     73     return armVCCOMM_SAD
     74         (pSrcOrg, iStepOrg, pSrcRef, iStepRef, pDstSAD, iHeight, 16);
     75 }
     76 
     77 /*****************************************************************************
     78  *                              END OF FILE
     79  *****************************************************************************/
     80 
     81