xref: /frameworks/av/media/libstagefright/codecs/on2/h264dec/omxdl/arm11/vc/m4p10/src/omxVCM4P10_InterpolateChroma.c

/*
 * 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_InterpolateChroma.c
 * OpenMAX DL: v1.0.2
 * Revision:   9641
 * Date:       Thursday, February 7, 2008
 *
 *
 *
 * Description:
 * This function will calculate 1/8 Pixel interpolation for Chroma Block
 *
 */

#include "omxtypes.h"
#include "armOMX.h"
#include "omxVC.h"

#include "armVC.h"
#include "armCOMM.h"


/**
 * Function: omxVCM4P10_InterpolateChroma,
 *
 * Description:
 * Performs 1/8-pixel interpolation for inter chroma MB.
 *
 * Remarks:
 *
 * Parameters:
 * [in]	pSrc	Pointer to the source reference frame buffer
 * [in]	srcStep Reference frame step in byte
 * [in]	dstStep Destination frame step in byte. Must be multiple of roi.width.
 * [in]	dx		Fractional part of horizontal motion vector component
 *						in 1/8 pixel unit;valid in the range [0,7]
 * [in]	dy		Fractional part of vertical motion vector component
 *						in 1/8 pixel unit;valid in the range [0,7]
 * [in]	roi		Dimension of the interpolation region;the parameters roi.width and roi.height must
 *                      be equal to either 2, 4, or 8.
 * [out]	pDst	Pointer to the destination frame buffer.
 *                   if roi.width==2,  2-byte alignment required
 *                   if roi.width==4,  4-byte alignment required
 *                   if roi.width==8,  8-byte alignment required
 *
 * Return Value:
 * If the function runs without error, it returns OMX_Sts_NoErr.
 * If one of the following cases occurs, the function returns OMX_Sts_BadArgErr:
 *	pSrc or pDst is NULL.
 *	srcStep or dstStep < 8.
 *	dx or dy is out of range [0-7].
 *	roi.width or roi.height is out of range {2,4,8}.
 *	roi.width is equal to 2, but pDst is not 2-byte aligned.
 *	roi.width is equal to 4, but pDst is not 4-byte aligned.
 *	roi.width is equal to 8, but pDst is not 8 byte aligned.
 *	srcStep or dstStep is not a multiple of 8.
 *
 */

OMXResult omxVCM4P10_InterpolateChroma (
     const OMX_U8* pSrc,
     OMX_S32 srcStep,
     OMX_U8* pDst,
     OMX_S32 dstStep,
     OMX_S32 dx,
     OMX_S32 dy,
     OMXSize roi
 )
{
    return armVCM4P10_Interpolate_Chroma
        ((OMX_U8*)pSrc, srcStep, pDst, dstStep, roi.width, roi.height, dx, dy);
}


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 *                              END OF FILE
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