178e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar/* 278e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * Copyright (C) 2007-2008 ARM Limited 378e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * 478e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * Licensed under the Apache License, Version 2.0 (the "License"); 578e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * you may not use this file except in compliance with the License. 678e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * You may obtain a copy of the License at 778e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * 878e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * http://www.apache.org/licenses/LICENSE-2.0 978e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * 1078e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * Unless required by applicable law or agreed to in writing, software 1178e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * distributed under the License is distributed on an "AS IS" BASIS, 1278e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1378e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * See the License for the specific language governing permissions and 1478e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * limitations under the License. 1578e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * 1678e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar */ 170c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 180c1bc742181ded4930842b46e9507372f0b1b963James Dong * 190c1bc742181ded4930842b46e9507372f0b1b963James Dong * File Name: omxVCCOMM_LimitMVToRect.c 200c1bc742181ded4930842b46e9507372f0b1b963James Dong * OpenMAX DL: v1.0.2 210c1bc742181ded4930842b46e9507372f0b1b963James Dong * Revision: 9641 220c1bc742181ded4930842b46e9507372f0b1b963James Dong * Date: Thursday, February 7, 2008 230c1bc742181ded4930842b46e9507372f0b1b963James Dong * 240c1bc742181ded4930842b46e9507372f0b1b963James Dong * 250c1bc742181ded4930842b46e9507372f0b1b963James Dong * 260c1bc742181ded4930842b46e9507372f0b1b963James Dong * 270c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 280c1bc742181ded4930842b46e9507372f0b1b963James Dong * Contains module for limiting the MV 290c1bc742181ded4930842b46e9507372f0b1b963James Dong * 300c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 310c1bc742181ded4930842b46e9507372f0b1b963James Dong 320c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxtypes.h" 330c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armOMX.h" 340c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxVC.h" 350c1bc742181ded4930842b46e9507372f0b1b963James Dong 360c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armCOMM.h" 370c1bc742181ded4930842b46e9507372f0b1b963James Dong 380c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 390c1bc742181ded4930842b46e9507372f0b1b963James Dong * Function: omxVCCOMM_LimitMVToRect (6.1.4.1.3) 400c1bc742181ded4930842b46e9507372f0b1b963James Dong * 410c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 420c1bc742181ded4930842b46e9507372f0b1b963James Dong * Limits the motion vector associated with the current block/macroblock to 430c1bc742181ded4930842b46e9507372f0b1b963James Dong * prevent the motion compensated block/macroblock from moving outside a 440c1bc742181ded4930842b46e9507372f0b1b963James Dong * bounding rectangle as shown in Figure 6-1. 450c1bc742181ded4930842b46e9507372f0b1b963James Dong * 460c1bc742181ded4930842b46e9507372f0b1b963James Dong * Input Arguments: 470c1bc742181ded4930842b46e9507372f0b1b963James Dong * 480c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrcMV - pointer to the motion vector associated with the current block 490c1bc742181ded4930842b46e9507372f0b1b963James Dong * or macroblock 500c1bc742181ded4930842b46e9507372f0b1b963James Dong * pRectVOPRef - pointer to the bounding rectangle 510c1bc742181ded4930842b46e9507372f0b1b963James Dong * Xcoord, Ycoord - coordinates of the current block or macroblock 520c1bc742181ded4930842b46e9507372f0b1b963James Dong * size - size of the current block or macroblock; must be equal to 8 or 530c1bc742181ded4930842b46e9507372f0b1b963James Dong * 16. 540c1bc742181ded4930842b46e9507372f0b1b963James Dong * 550c1bc742181ded4930842b46e9507372f0b1b963James Dong * Output Arguments: 560c1bc742181ded4930842b46e9507372f0b1b963James Dong * 570c1bc742181ded4930842b46e9507372f0b1b963James Dong * pDstMV - pointer to the limited motion vector 580c1bc742181ded4930842b46e9507372f0b1b963James Dong * 590c1bc742181ded4930842b46e9507372f0b1b963James Dong * Return Value: 600c1bc742181ded4930842b46e9507372f0b1b963James Dong * 610c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_NoErr - no error 620c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_BadArgErr - bad arguments. Returned if one or more of the 630c1bc742181ded4930842b46e9507372f0b1b963James Dong * following conditions is true: 640c1bc742181ded4930842b46e9507372f0b1b963James Dong * - at least one of the following pointers is NULL: 650c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrcMV, pDstMV, or pRectVOPRef. 660c1bc742181ded4930842b46e9507372f0b1b963James Dong * - size is not equal to either 8 or 16. 670c1bc742181ded4930842b46e9507372f0b1b963James Dong * - the width or height of the bounding rectangle is less than 680c1bc742181ded4930842b46e9507372f0b1b963James Dong * twice the block size. 690c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 700c1bc742181ded4930842b46e9507372f0b1b963James DongOMXResult omxVCCOMM_LimitMVToRect( 710c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMXVCMotionVector * pSrcMV, 720c1bc742181ded4930842b46e9507372f0b1b963James Dong OMXVCMotionVector *pDstMV, 730c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMXRect * pRectVOPRef, 740c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT Xcoord, 750c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT Ycoord, 760c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT size 770c1bc742181ded4930842b46e9507372f0b1b963James Dong) 780c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 790c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Argument error checks */ 800c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pSrcMV == NULL, OMX_Sts_BadArgErr); 810c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pDstMV == NULL, OMX_Sts_BadArgErr); 820c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pRectVOPRef == NULL, OMX_Sts_BadArgErr); 830c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf((size != 8) && (size != 16), OMX_Sts_BadArgErr); 840c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf((pRectVOPRef->width < (2* size)), OMX_Sts_BadArgErr); 850c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf((pRectVOPRef->height < (2* size)), OMX_Sts_BadArgErr); 860c1bc742181ded4930842b46e9507372f0b1b963James Dong 870c1bc742181ded4930842b46e9507372f0b1b963James Dong pDstMV->dx = armMin (armMax (pSrcMV->dx, 2*pRectVOPRef->x - Xcoord), 880c1bc742181ded4930842b46e9507372f0b1b963James Dong (2*pRectVOPRef->x + pRectVOPRef->width - Xcoord - size)); 890c1bc742181ded4930842b46e9507372f0b1b963James Dong pDstMV->dy = armMin (armMax (pSrcMV->dy, 2*pRectVOPRef->y - Ycoord), 900c1bc742181ded4930842b46e9507372f0b1b963James Dong (2*pRectVOPRef->y + pRectVOPRef->height - Ycoord - size)); 910c1bc742181ded4930842b46e9507372f0b1b963James Dong 920c1bc742181ded4930842b46e9507372f0b1b963James Dong 930c1bc742181ded4930842b46e9507372f0b1b963James Dong return OMX_Sts_NoErr; 940c1bc742181ded4930842b46e9507372f0b1b963James Dong} 950c1bc742181ded4930842b46e9507372f0b1b963James Dong 960c1bc742181ded4930842b46e9507372f0b1b963James Dong/* End of file */ 97