10c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 20c1bc742181ded4930842b46e9507372f0b1b963James Dong * 30c1bc742181ded4930842b46e9507372f0b1b963James Dong * File Name: omxVCCOMM_LimitMVToRect.c 40c1bc742181ded4930842b46e9507372f0b1b963James Dong * OpenMAX DL: v1.0.2 50c1bc742181ded4930842b46e9507372f0b1b963James Dong * Revision: 9641 60c1bc742181ded4930842b46e9507372f0b1b963James Dong * Date: Thursday, February 7, 2008 70c1bc742181ded4930842b46e9507372f0b1b963James Dong * 80c1bc742181ded4930842b46e9507372f0b1b963James Dong * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. 90c1bc742181ded4930842b46e9507372f0b1b963James Dong * 100c1bc742181ded4930842b46e9507372f0b1b963James Dong * 110c1bc742181ded4930842b46e9507372f0b1b963James Dong * 120c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 130c1bc742181ded4930842b46e9507372f0b1b963James Dong * Contains module for limiting the MV 140c1bc742181ded4930842b46e9507372f0b1b963James Dong * 150c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 160c1bc742181ded4930842b46e9507372f0b1b963James Dong 170c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxtypes.h" 180c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armOMX.h" 190c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxVC.h" 200c1bc742181ded4930842b46e9507372f0b1b963James Dong 210c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armCOMM.h" 220c1bc742181ded4930842b46e9507372f0b1b963James Dong 230c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 240c1bc742181ded4930842b46e9507372f0b1b963James Dong * Function: omxVCCOMM_LimitMVToRect (6.1.4.1.3) 250c1bc742181ded4930842b46e9507372f0b1b963James Dong * 260c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 270c1bc742181ded4930842b46e9507372f0b1b963James Dong * Limits the motion vector associated with the current block/macroblock to 280c1bc742181ded4930842b46e9507372f0b1b963James Dong * prevent the motion compensated block/macroblock from moving outside a 290c1bc742181ded4930842b46e9507372f0b1b963James Dong * bounding rectangle as shown in Figure 6-1. 300c1bc742181ded4930842b46e9507372f0b1b963James Dong * 310c1bc742181ded4930842b46e9507372f0b1b963James Dong * Input Arguments: 320c1bc742181ded4930842b46e9507372f0b1b963James Dong * 330c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrcMV - pointer to the motion vector associated with the current block 340c1bc742181ded4930842b46e9507372f0b1b963James Dong * or macroblock 350c1bc742181ded4930842b46e9507372f0b1b963James Dong * pRectVOPRef - pointer to the bounding rectangle 360c1bc742181ded4930842b46e9507372f0b1b963James Dong * Xcoord, Ycoord - coordinates of the current block or macroblock 370c1bc742181ded4930842b46e9507372f0b1b963James Dong * size - size of the current block or macroblock; must be equal to 8 or 380c1bc742181ded4930842b46e9507372f0b1b963James Dong * 16. 390c1bc742181ded4930842b46e9507372f0b1b963James Dong * 400c1bc742181ded4930842b46e9507372f0b1b963James Dong * Output Arguments: 410c1bc742181ded4930842b46e9507372f0b1b963James Dong * 420c1bc742181ded4930842b46e9507372f0b1b963James Dong * pDstMV - pointer to the limited motion vector 430c1bc742181ded4930842b46e9507372f0b1b963James Dong * 440c1bc742181ded4930842b46e9507372f0b1b963James Dong * Return Value: 450c1bc742181ded4930842b46e9507372f0b1b963James Dong * 460c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_NoErr - no error 470c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_BadArgErr - bad arguments. Returned if one or more of the 480c1bc742181ded4930842b46e9507372f0b1b963James Dong * following conditions is true: 490c1bc742181ded4930842b46e9507372f0b1b963James Dong * - at least one of the following pointers is NULL: 500c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrcMV, pDstMV, or pRectVOPRef. 510c1bc742181ded4930842b46e9507372f0b1b963James Dong * - size is not equal to either 8 or 16. 520c1bc742181ded4930842b46e9507372f0b1b963James Dong * - the width or height of the bounding rectangle is less than 530c1bc742181ded4930842b46e9507372f0b1b963James Dong * twice the block size. 540c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 550c1bc742181ded4930842b46e9507372f0b1b963James DongOMXResult omxVCCOMM_LimitMVToRect( 560c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMXVCMotionVector * pSrcMV, 570c1bc742181ded4930842b46e9507372f0b1b963James Dong OMXVCMotionVector *pDstMV, 580c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMXRect * pRectVOPRef, 590c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT Xcoord, 600c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT Ycoord, 610c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT size 620c1bc742181ded4930842b46e9507372f0b1b963James Dong) 630c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 640c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Argument error checks */ 650c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pSrcMV == NULL, OMX_Sts_BadArgErr); 660c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pDstMV == NULL, OMX_Sts_BadArgErr); 670c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pRectVOPRef == NULL, OMX_Sts_BadArgErr); 680c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf((size != 8) && (size != 16), OMX_Sts_BadArgErr); 690c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf((pRectVOPRef->width < (2* size)), OMX_Sts_BadArgErr); 700c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf((pRectVOPRef->height < (2* size)), OMX_Sts_BadArgErr); 710c1bc742181ded4930842b46e9507372f0b1b963James Dong 720c1bc742181ded4930842b46e9507372f0b1b963James Dong pDstMV->dx = armMin (armMax (pSrcMV->dx, 2*pRectVOPRef->x - Xcoord), 730c1bc742181ded4930842b46e9507372f0b1b963James Dong (2*pRectVOPRef->x + pRectVOPRef->width - Xcoord - size)); 740c1bc742181ded4930842b46e9507372f0b1b963James Dong pDstMV->dy = armMin (armMax (pSrcMV->dy, 2*pRectVOPRef->y - Ycoord), 750c1bc742181ded4930842b46e9507372f0b1b963James Dong (2*pRectVOPRef->y + pRectVOPRef->height - Ycoord - size)); 760c1bc742181ded4930842b46e9507372f0b1b963James Dong 770c1bc742181ded4930842b46e9507372f0b1b963James Dong 780c1bc742181ded4930842b46e9507372f0b1b963James Dong return OMX_Sts_NoErr; 790c1bc742181ded4930842b46e9507372f0b1b963James Dong} 800c1bc742181ded4930842b46e9507372f0b1b963James Dong 810c1bc742181ded4930842b46e9507372f0b1b963James Dong/* End of file */ 82