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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: armVCM4P2_CompareMV.c
* OpenMAX DL: v1.0.2
* Revision: 9641
* Date: Thursday, February 7, 2008
*
*
*
*
* Description:
* Contains module for comparing motion vectors and SAD's to decide
* the best MV and SAD
*
*/
#include "omxtypes.h"
#include "armOMX.h"
#include "armVC.h"
#include "armCOMM.h"
/**
* Function: armVCM4P2_CompareMV
*
* Description:
* Performs comparision of motion vectors and SAD's to decide the
* best MV and SAD
*
* Remarks:
*
* Parameters:
* [in] mvX x coordinate of the candidate motion vector
* [in] mvY y coordinate of the candidate motion vector
* [in] candSAD Candidate SAD
* [in] bestMVX x coordinate of the best motion vector
* [in] bestMVY y coordinate of the best motion vector
* [in] bestSAD best SAD
*
* Return Value:
* OMX_INT -- 1 to indicate that the current sad is the best
* 0 to indicate that it is NOT the best SAD
*/
OMX_INT armVCM4P2_CompareMV (
OMX_S16 mvX,
OMX_S16 mvY,
OMX_INT candSAD,
OMX_S16 bestMVX,
OMX_S16 bestMVY,
OMX_INT bestSAD
)
{
if (candSAD < bestSAD)
{
return 1;
}
if (candSAD > bestSAD)
{
return 0;
}
/* shorter motion vector */
if ( (mvX * mvX + mvY * mvY) < (bestMVX*bestMVX+bestMVY*bestMVY) )
{
return 1;
}
return 0;
}
/*End of File*/
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