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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_InterpolateHalfHor_Luma.c
* OpenMAX DL: v1.0.2
* Revision: 9641
* Date: Thursday, February 7, 2008
*
*
*
* Description:
* This function will calculate Half horizontal luma interpolation
*
*/
#include "omxtypes.h"
#include "armOMX.h"
#include "omxVC.h"
#include "armCOMM.h"
#include "armVC.h"
/**
* Function: omxVCM4P10_InterpolateHalfHor_Luma (6.3.5.5.1)
*
* Description:
* This function performs interpolation for two horizontal 1/2-pel positions
* (-1/2,0) and (1/2, 0) - around a full-pel position.
*
* Input Arguments:
*
* pSrc - Pointer to the top-left corner of the block used to interpolate in
* the reconstruction 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 4, 8, or 16
*
* Output Arguments:
*
* pDstLeft -Pointer to the interpolation buffer of the left -pel position
* (-1/2, 0)
* If iWidth==4, 4-byte alignment required.
* If iWidth==8, 8-byte alignment required.
* If iWidth==16, 16-byte alignment required.
* pDstRight -Pointer to the interpolation buffer of the right -pel
* position (1/2, 0)
* 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, pDstLeft, or pDstRight
* - iWidth or iHeight have values other than 4, 8, or 16
* - iWidth==4 but pDstLeft and/or pDstRight is/are not aligned on a 4-byte boundary
* - iWidth==8 but pDstLeft and/or pDstRight is/are not aligned on a 8-byte boundary
* - iWidth==16 but pDstLeft and/or pDstRight is/are not aligned on a 16-byte boundary
* - any alignment restrictions are violated
*
*/
OMXResult omxVCM4P10_InterpolateHalfHor_Luma(
const OMX_U8* pSrc,
OMX_U32 iSrcStep,
OMX_U8* pDstLeft,
OMX_U8* pDstRight,
OMX_U32 iDstStep,
OMX_U32 iWidth,
OMX_U32 iHeight
)
{
OMXResult RetValue;
/* check for argument error */
armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf(pDstLeft == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf(pDstRight == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf((iWidth == 4) &&
armNot4ByteAligned(pDstLeft) &&
armNot4ByteAligned(pDstRight), OMX_Sts_BadArgErr)
armRetArgErrIf((iWidth == 8) &&
armNot8ByteAligned(pDstLeft) &&
armNot8ByteAligned(pDstRight), OMX_Sts_BadArgErr)
armRetArgErrIf((iWidth == 16) &&
armNot16ByteAligned(pDstLeft) &&
armNot16ByteAligned(pDstRight), 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_InterpolateHalfHor_Luma (
pSrc - 1,
iSrcStep,
pDstLeft,
iDstStep,
iWidth,
iHeight);
if (RetValue != OMX_Sts_NoErr)
{
return RetValue;
}
RetValue = armVCM4P10_InterpolateHalfHor_Luma (
pSrc,
iSrcStep,
pDstRight,
iDstStep,
iWidth,
iHeight);
return RetValue;
}
/*****************************************************************************
* END OF FILE
*****************************************************************************/
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