omxVCCOMM_ComputeTextureErrorBlock_SAD.c revision 78e52bfac041d71ce53b5b13c2abf78af742b09d
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_ComputeTextureErrorBlock_SAD.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 computing the error for a MB of size 8x8 290c1bc742181ded4930842b46e9507372f0b1b963James Dong * 300c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 310c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxtypes.h" 320c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armOMX.h" 330c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxVC.h" 340c1bc742181ded4930842b46e9507372f0b1b963James Dong 350c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armCOMM.h" 360c1bc742181ded4930842b46e9507372f0b1b963James Dong 370c1bc742181ded4930842b46e9507372f0b1b963James Dong 380c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 390c1bc742181ded4930842b46e9507372f0b1b963James Dong * Function: omxVCCOMM_ComputeTextureErrorBlock_SAD (6.1.4.1.1) 400c1bc742181ded4930842b46e9507372f0b1b963James Dong * 410c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 420c1bc742181ded4930842b46e9507372f0b1b963James Dong * Computes texture error of the block; also returns SAD. 430c1bc742181ded4930842b46e9507372f0b1b963James Dong * 440c1bc742181ded4930842b46e9507372f0b1b963James Dong * Input Arguments: 450c1bc742181ded4930842b46e9507372f0b1b963James Dong * 460c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrc - pointer to the source plane; must be aligned on an 8-byte 470c1bc742181ded4930842b46e9507372f0b1b963James Dong * boundary. 480c1bc742181ded4930842b46e9507372f0b1b963James Dong * srcStep - step of the source plane 490c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrcRef - pointer to the reference buffer, an 8x8 block; must be aligned 500c1bc742181ded4930842b46e9507372f0b1b963James Dong * on an 8-byte boundary. 510c1bc742181ded4930842b46e9507372f0b1b963James Dong * 520c1bc742181ded4930842b46e9507372f0b1b963James Dong * Output Arguments: 530c1bc742181ded4930842b46e9507372f0b1b963James Dong * 540c1bc742181ded4930842b46e9507372f0b1b963James Dong * pDst - pointer to the destination buffer, an 8x8 block; must be aligned 550c1bc742181ded4930842b46e9507372f0b1b963James Dong * on an 8-byte boundary. 560c1bc742181ded4930842b46e9507372f0b1b963James Dong * pDstSAD - pointer to the Sum of Absolute Differences (SAD) value 570c1bc742181ded4930842b46e9507372f0b1b963James Dong * 580c1bc742181ded4930842b46e9507372f0b1b963James Dong * Return Value: 590c1bc742181ded4930842b46e9507372f0b1b963James Dong * 600c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_NoErr - no error 610c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_BadArgErr - bad arguments 620c1bc742181ded4930842b46e9507372f0b1b963James Dong * - At least one of the following 630c1bc742181ded4930842b46e9507372f0b1b963James Dong * pointers is NULL: pSrc, pSrcRef, pDst and pDstSAD. 640c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pSrc is not 8-byte aligned. 650c1bc742181ded4930842b46e9507372f0b1b963James Dong * - SrcStep <= 0 or srcStep is not a multiple of 8. 660c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pSrcRef is not 8-byte aligned. 670c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pDst is not 8-byte aligned. 680c1bc742181ded4930842b46e9507372f0b1b963James Dong * 690c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 700c1bc742181ded4930842b46e9507372f0b1b963James Dong 710c1bc742181ded4930842b46e9507372f0b1b963James DongOMXResult omxVCCOMM_ComputeTextureErrorBlock_SAD( 720c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMX_U8 *pSrc, 730c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT srcStep, 740c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMX_U8 *pSrcRef, 750c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S16 * pDst, 760c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT *pDstSAD 770c1bc742181ded4930842b46e9507372f0b1b963James Dong) 780c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 790c1bc742181ded4930842b46e9507372f0b1b963James Dong 800c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT x, y, count; 810c1bc742181ded4930842b46e9507372f0b1b963James Dong 820c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Argument error checks */ 830c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr); 840c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pSrcRef == NULL, OMX_Sts_BadArgErr); 850c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr); 860c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pDstSAD == NULL, OMX_Sts_BadArgErr); 870c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(!armIs8ByteAligned(pSrc), OMX_Sts_BadArgErr); 880c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(!armIs8ByteAligned(pSrcRef), OMX_Sts_BadArgErr); 890c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(!armIs8ByteAligned(pDst), OMX_Sts_BadArgErr); 900c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf((srcStep <= 0) || (srcStep & 7), OMX_Sts_BadArgErr); 910c1bc742181ded4930842b46e9507372f0b1b963James Dong 920c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Calculate the error block */ 930c1bc742181ded4930842b46e9507372f0b1b963James Dong for (y = 0, count = 0, *pDstSAD = 0; 940c1bc742181ded4930842b46e9507372f0b1b963James Dong y < 8; 950c1bc742181ded4930842b46e9507372f0b1b963James Dong y++, pSrc += srcStep) 960c1bc742181ded4930842b46e9507372f0b1b963James Dong { 970c1bc742181ded4930842b46e9507372f0b1b963James Dong for (x = 0; x < 8; x++, count++) 980c1bc742181ded4930842b46e9507372f0b1b963James Dong { 990c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[count] = pSrc[x] - pSrcRef[count]; 1000c1bc742181ded4930842b46e9507372f0b1b963James Dong *pDstSAD += armAbs(pDst[count]); 1010c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1020c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1030c1bc742181ded4930842b46e9507372f0b1b963James Dong 1040c1bc742181ded4930842b46e9507372f0b1b963James Dong return OMX_Sts_NoErr; 1050c1bc742181ded4930842b46e9507372f0b1b963James Dong 1060c1bc742181ded4930842b46e9507372f0b1b963James Dong} 1070c1bc742181ded4930842b46e9507372f0b1b963James Dong 1080c1bc742181ded4930842b46e9507372f0b1b963James Dong/* End of file */ 109