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/**
*
* File Name: omxVCCOMM_Copy16x16.c
* OpenMAX DL: v1.0.2
* Revision: 9641
* Date: Thursday, February 7, 2008
*
* (c) Copyright 2007-2008 ARM Limited. All Rights Reserved.
*
*
* Description:
* MPEG4 16x16 Copy module
*
*/
#include "omxtypes.h"
#include "armOMX.h"
#include "omxVC.h"
#include "armCOMM.h"
/**
* Function: omxVCCOMM_Copy16x16 (6.1.3.3.2)
*
* Description:
* Copies the reference 16x16 macroblock to the current macroblock.
*
* Input Arguments:
*
* pSrc - pointer to the reference macroblock in the source frame; must be
* aligned on a 16-byte boundary.
* step - distance between the starts of consecutive lines in the reference
* frame, in bytes; must be a multiple of 16 and must be larger
* than or equal to 16.
*
* Output Arguments:
*
* pDst - pointer to the destination macroblock; must be aligned on a
* 16-byte boundary.
*
* Return Value:
*
* OMX_Sts_NoErr - no error
* OMX_Sts_BadArgErr - bad arguments; returned under any of the following
* conditions:
* - one or more of the following pointers is NULL: pSrc, pDst
* - one or more of the following pointers is not aligned on a 16-byte
* boundary: pSrc, pDst
* - step <16 or step is not a multiple of 16.
*
*/
OMXResult omxVCCOMM_Copy16x16(
const OMX_U8 *pSrc,
OMX_U8 *pDst,
OMX_INT step)
{
/* Definitions and Initializations*/
OMX_INT count,index, x, y;
/* Argument error checks */
armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr);
armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr);
armRetArgErrIf(!armIs16ByteAligned(pSrc), OMX_Sts_BadArgErr);
armRetArgErrIf(!armIs16ByteAligned(pDst), OMX_Sts_BadArgErr);
armRetArgErrIf(((step < 16) || (step % 16)), OMX_Sts_BadArgErr);
/* Copying the ref 16x16 blk to the curr blk */
for (y = 0, count = 0, index = 0; y < 16; y++, count = count + step - 16)
{
for (x = 0; x < 16; x++, count++, index++)
{
pDst[index] = pSrc[count];
}
}
return OMX_Sts_NoErr;
}
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