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.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 320c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxtypes.h" 330c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armOMX.h" 340c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxVC.h" 350c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armCOMM.h" 360c1bc742181ded4930842b46e9507372f0b1b963James Dong 370c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 380c1bc742181ded4930842b46e9507372f0b1b963James Dong * Function: omxVCCOMM_ComputeTextureErrorBlock (6.1.4.1.2) 390c1bc742181ded4930842b46e9507372f0b1b963James Dong * 400c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 410c1bc742181ded4930842b46e9507372f0b1b963James Dong * Computes the texture error of the block. 420c1bc742181ded4930842b46e9507372f0b1b963James Dong * 430c1bc742181ded4930842b46e9507372f0b1b963James Dong * Input Arguments: 440c1bc742181ded4930842b46e9507372f0b1b963James Dong * 450c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrc - pointer to the source plane. This should be aligned on an 8-byte 460c1bc742181ded4930842b46e9507372f0b1b963James Dong * boundary. 470c1bc742181ded4930842b46e9507372f0b1b963James Dong * srcStep - step of the source plane 480c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrcRef - pointer to the reference buffer, an 8x8 block. This should be 490c1bc742181ded4930842b46e9507372f0b1b963James Dong * aligned on an 8-byte boundary. 500c1bc742181ded4930842b46e9507372f0b1b963James Dong * 510c1bc742181ded4930842b46e9507372f0b1b963James Dong * Output Arguments: 520c1bc742181ded4930842b46e9507372f0b1b963James Dong * 530c1bc742181ded4930842b46e9507372f0b1b963James Dong * pDst - pointer to the destination buffer, an 8x8 block. This should be 540c1bc742181ded4930842b46e9507372f0b1b963James Dong * aligned on an 8-byte boundary. 550c1bc742181ded4930842b46e9507372f0b1b963James Dong * 560c1bc742181ded4930842b46e9507372f0b1b963James Dong * Return Value: 570c1bc742181ded4930842b46e9507372f0b1b963James Dong * 580c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_NoErr - no error 590c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_BadArgErr - bad arguments: 600c1bc742181ded4930842b46e9507372f0b1b963James Dong * - At least one of the following pointers is NULL: 610c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrc, pSrcRef, pDst. 620c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pSrc is not 8-byte aligned. 630c1bc742181ded4930842b46e9507372f0b1b963James Dong * - SrcStep <= 0 or srcStep is not a multiple of 8. 640c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pSrcRef is not 8-byte aligned. 650c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pDst is not 8-byte aligned 660c1bc742181ded4930842b46e9507372f0b1b963James Dong * 670c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 680c1bc742181ded4930842b46e9507372f0b1b963James Dong 690c1bc742181ded4930842b46e9507372f0b1b963James DongOMXResult omxVCCOMM_ComputeTextureErrorBlock( 700c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMX_U8 *pSrc, 710c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT srcStep, 720c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMX_U8 *pSrcRef, 730c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S16 * pDst 740c1bc742181ded4930842b46e9507372f0b1b963James Dong) 750c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 760c1bc742181ded4930842b46e9507372f0b1b963James Dong 770c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT x, y, count; 780c1bc742181ded4930842b46e9507372f0b1b963James Dong 790c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Argument error checks */ 800c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr); 810c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pSrcRef == NULL, OMX_Sts_BadArgErr); 820c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr); 830c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(!armIs8ByteAligned(pSrc), OMX_Sts_BadArgErr); 840c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(!armIs8ByteAligned(pSrcRef), OMX_Sts_BadArgErr); 850c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(!armIs8ByteAligned(pDst), OMX_Sts_BadArgErr); 860c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf((srcStep <= 0) || (srcStep & 7), OMX_Sts_BadArgErr); 870c1bc742181ded4930842b46e9507372f0b1b963James Dong 880c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Calculate the error block */ 890c1bc742181ded4930842b46e9507372f0b1b963James Dong for (y = 0, count = 0; 900c1bc742181ded4930842b46e9507372f0b1b963James Dong y < 8; 910c1bc742181ded4930842b46e9507372f0b1b963James Dong y++, pSrc += srcStep) 920c1bc742181ded4930842b46e9507372f0b1b963James Dong { 930c1bc742181ded4930842b46e9507372f0b1b963James Dong for (x = 0; x < 8; x++, count++) 940c1bc742181ded4930842b46e9507372f0b1b963James Dong { 950c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[count] = pSrc[x] - pSrcRef[count]; 960c1bc742181ded4930842b46e9507372f0b1b963James Dong } 970c1bc742181ded4930842b46e9507372f0b1b963James Dong } 980c1bc742181ded4930842b46e9507372f0b1b963James Dong 990c1bc742181ded4930842b46e9507372f0b1b963James Dong return OMX_Sts_NoErr; 1000c1bc742181ded4930842b46e9507372f0b1b963James Dong 1010c1bc742181ded4930842b46e9507372f0b1b963James Dong} 1020c1bc742181ded4930842b46e9507372f0b1b963James Dong 1030c1bc742181ded4930842b46e9507372f0b1b963James Dong/* End of file */ 104