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/*
* Copyright (C) 2007-2008 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/**
*
* File Name: omxVCM4P10_InterpolateHalfVer_Luma.c
* OpenMAX DL: v1.0.2
* Revision: 9641
* Date: Thursday, February 7, 2008
*
*
*
* Description:
* This function will calculate SAD for 4x4 blocks
*
*/
#include "omxtypes.h"
#include "armOMX.h"
#include "omxVC.h"
#include "armCOMM.h"
#include "armVC.h"
/**
* Function: omxVCM4P10_InterpolateHalfVer_Luma (6.3.5.5.2)
*
* Description:
* This function performs interpolation for two vertical 1/2-pel positions -
* (0, -1/2) and (0, 1/2) - around a full-pel position.
*
* Input Arguments:
*
* pSrc - Pointer to top-left corner of block used to interpolate in the
* reconstructed frame plane
* iSrcStep - Step of the source buffer.
* iDstStep - Step of the destination (interpolation) buffer; must be a
* multiple of iWidth.
* iWidth - Width of the current block; must be equal to either 4, 8, or 16
* iHeight - Height of the current block; must be equal to either 4, 8, or 16
*
* Output Arguments:
*
* pDstUp -Pointer to the interpolation buffer of the -pel position above
* the current full-pel position (0, -1/2)
* If iWidth==4, 4-byte alignment required.
* If iWidth==8, 8-byte alignment required.
* If iWidth==16, 16-byte alignment required.
* pDstDown -Pointer to the interpolation buffer of the -pel position below
* the current full-pel position (0, 1/2)
* If iWidth==4, 4-byte alignment required.
* If iWidth==8, 8-byte alignment required.
* If iWidth==16, 16-byte alignment required.
*
* Return Value:
*
* OMX_Sts_NoErr - no error
* OMX_Sts_BadArgErr - bad arguments; returned if any of the following
* conditions are true:
* - at least one of the following pointers is NULL:
* pSrc, pDstUp, or pDstDown
* - iWidth or iHeight have values other than 4, 8, or 16
* - iWidth==4 but pDstUp and/or pDstDown is/are not aligned on a 4-byte boundary
* - iWidth==8 but pDstUp and/or pDstDown is/are not aligned on a 8-byte boundary
* - iWidth==16 but pDstUp and/or pDstDown is/are not aligned on a 16-byte boundary
*
*/
OMXResult omxVCM4P10_InterpolateHalfVer_Luma(
const OMX_U8* pSrc,
OMX_U32 iSrcStep,
OMX_U8* pDstUp,
OMX_U8* pDstDown,
OMX_U32 iDstStep,
OMX_U32 iWidth,
OMX_U32 iHeight
)
{
OMXResult RetValue;
/* check for argument error */
armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf(pDstUp == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf(pDstDown == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf((iWidth == 4) &&
armNot4ByteAligned(pDstUp) &&
armNot4ByteAligned(pDstDown), OMX_Sts_BadArgErr)
armRetArgErrIf((iWidth == 8) &&
armNot8ByteAligned(pDstUp) &&
armNot8ByteAligned(pDstDown), OMX_Sts_BadArgErr)
armRetArgErrIf((iWidth == 16) &&
armNot16ByteAligned(pDstUp) &&
armNot16ByteAligned(pDstDown), OMX_Sts_BadArgErr)
armRetArgErrIf((iHeight != 16) && (iHeight != 8)&& (iHeight != 4), OMX_Sts_BadArgErr)
armRetArgErrIf((iWidth != 16) && (iWidth != 8)&& (iWidth != 4), OMX_Sts_BadArgErr)
RetValue = armVCM4P10_InterpolateHalfVer_Luma(
pSrc - iSrcStep,
iSrcStep,
pDstUp,
iDstStep,
iWidth,
iHeight);
if (RetValue != OMX_Sts_NoErr)
{
return RetValue;
}
RetValue = armVCM4P10_InterpolateHalfVer_Luma(
pSrc,
iSrcStep,
pDstDown,
iDstStep,
iWidth,
iHeight);
return RetValue;
}
/*****************************************************************************
* END OF FILE
*****************************************************************************/
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