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      1 /*
      2  * Copyright (C) 2007-2008 ARM Limited
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  *
     16  */
     17 /**
     18  *
     19  * File Name:  omxVCCOMM_SAD_16x.c
     20  * OpenMAX DL: v1.0.2
     21  * Revision:   9641
     22  * Date:       Thursday, February 7, 2008
     23  *
     24  *
     25  *
     26  * Description:
     27  * This function will calculate SAD for 16x16 and 16x8 blocks
     28  *
     29  */
     30 
     31 #include "omxtypes.h"
     32 #include "armOMX.h"
     33 #include "omxVC.h"
     34 
     35 #include "armVC.h"
     36 #include "armCOMM.h"
     37 
     38 /**
     39  * Function:  omxVCCOMM_SAD_16x   (6.1.4.1.4)
     40  *
     41  * Description:
     42  * This function calculates the SAD for 16x16 and 16x8 blocks.
     43  *
     44  * Input Arguments:
     45  *
     46  *   pSrcOrg - Pointer to the original block; must be aligned on a 16-byte
     47  *             boundary.
     48  *   iStepOrg - Step of the original block buffer
     49  *   pSrcRef  - Pointer to the reference block
     50  *   iStepRef - Step of the reference block buffer
     51  *   iHeight  - Height of the block
     52  *
     53  * Output Arguments:
     54  *
     55  *   pDstSAD - Pointer of result SAD
     56  *
     57  * Return Value:
     58  *
     59  *    OMX_Sts_NoErr - no error
     60  *    OMX_Sts_BadArgErr - bad arguments.  Returned if one or more of the
     61  *              following conditions is true:
     62  *    -    at least one of the following pointers is NULL:
     63  *         pSrcOrg, pDstSAD, or pSrcRef
     64  *    -    pSrcOrg is not 16-byte aligned.
     65  *    -    iStepOrg  <= 0 or iStepOrg is not a multiple of 16
     66  *    -    iStepRef <= 0 or iStepRef is not a multiple of 16
     67  *    -    iHeight is not 8 or 16
     68  *
     69  */
     70 OMXResult omxVCCOMM_SAD_16x(
     71 			const OMX_U8* 	pSrcOrg,
     72 			OMX_U32 	iStepOrg,
     73 			const OMX_U8* 	pSrcRef,
     74 			OMX_U32 	iStepRef,
     75 			OMX_S32*	pDstSAD,
     76 			OMX_U32		iHeight
     77 )
     78 {
     79     /* check for argument error */
     80     armRetArgErrIf(pSrcOrg == NULL, OMX_Sts_BadArgErr)
     81     armRetArgErrIf(pSrcRef == NULL, OMX_Sts_BadArgErr)
     82     armRetArgErrIf(pDstSAD == NULL, OMX_Sts_BadArgErr)
     83     armRetArgErrIf((iHeight != 16) && (iHeight != 8), OMX_Sts_BadArgErr)
     84     armRetArgErrIf(armNot16ByteAligned(pSrcOrg), OMX_Sts_BadArgErr)
     85     armRetArgErrIf((iStepOrg == 0) || (iStepOrg & 15), OMX_Sts_BadArgErr)
     86     armRetArgErrIf((iStepRef == 0) || (iStepRef & 15), OMX_Sts_BadArgErr)
     87 
     88     return armVCCOMM_SAD
     89         (pSrcOrg, iStepOrg, pSrcRef, iStepRef, pDstSAD, iHeight, 16);
     90 }
     91 
     92 /*****************************************************************************
     93  *                              END OF FILE
     94  *****************************************************************************/
     95 
     96