10c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 20c1bc742181ded4930842b46e9507372f0b1b963James Dong * 30c1bc742181ded4930842b46e9507372f0b1b963James Dong * File Name: omxVCCOMM_ComputeTextureErrorBlock.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 computing the error for a MB of size 8x8 140c1bc742181ded4930842b46e9507372f0b1b963James Dong * 150c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 160c1bc742181ded4930842b46e9507372f0b1b963James Dong 170c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxtypes.h" 180c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armOMX.h" 190c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxVC.h" 200c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armCOMM.h" 210c1bc742181ded4930842b46e9507372f0b1b963James Dong 220c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 230c1bc742181ded4930842b46e9507372f0b1b963James Dong * Function: omxVCCOMM_ComputeTextureErrorBlock (6.1.4.1.2) 240c1bc742181ded4930842b46e9507372f0b1b963James Dong * 250c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 260c1bc742181ded4930842b46e9507372f0b1b963James Dong * Computes the texture error of the block. 270c1bc742181ded4930842b46e9507372f0b1b963James Dong * 280c1bc742181ded4930842b46e9507372f0b1b963James Dong * Input Arguments: 290c1bc742181ded4930842b46e9507372f0b1b963James Dong * 300c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrc - pointer to the source plane. This should be aligned on an 8-byte 310c1bc742181ded4930842b46e9507372f0b1b963James Dong * boundary. 320c1bc742181ded4930842b46e9507372f0b1b963James Dong * srcStep - step of the source plane 330c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrcRef - pointer to the reference buffer, an 8x8 block. This should be 340c1bc742181ded4930842b46e9507372f0b1b963James Dong * aligned on an 8-byte boundary. 350c1bc742181ded4930842b46e9507372f0b1b963James Dong * 360c1bc742181ded4930842b46e9507372f0b1b963James Dong * Output Arguments: 370c1bc742181ded4930842b46e9507372f0b1b963James Dong * 380c1bc742181ded4930842b46e9507372f0b1b963James Dong * pDst - pointer to the destination buffer, an 8x8 block. This should be 390c1bc742181ded4930842b46e9507372f0b1b963James Dong * aligned on an 8-byte boundary. 400c1bc742181ded4930842b46e9507372f0b1b963James Dong * 410c1bc742181ded4930842b46e9507372f0b1b963James Dong * Return Value: 420c1bc742181ded4930842b46e9507372f0b1b963James Dong * 430c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_NoErr - no error 440c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_BadArgErr - bad arguments: 450c1bc742181ded4930842b46e9507372f0b1b963James Dong * - At least one of the following pointers is NULL: 460c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrc, pSrcRef, pDst. 470c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pSrc is not 8-byte aligned. 480c1bc742181ded4930842b46e9507372f0b1b963James Dong * - SrcStep <= 0 or srcStep is not a multiple of 8. 490c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pSrcRef is not 8-byte aligned. 500c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pDst is not 8-byte aligned 510c1bc742181ded4930842b46e9507372f0b1b963James Dong * 520c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 530c1bc742181ded4930842b46e9507372f0b1b963James Dong 540c1bc742181ded4930842b46e9507372f0b1b963James DongOMXResult omxVCCOMM_ComputeTextureErrorBlock( 550c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMX_U8 *pSrc, 560c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT srcStep, 570c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMX_U8 *pSrcRef, 580c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S16 * pDst 590c1bc742181ded4930842b46e9507372f0b1b963James Dong) 600c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 610c1bc742181ded4930842b46e9507372f0b1b963James Dong 620c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT x, y, count; 630c1bc742181ded4930842b46e9507372f0b1b963James Dong 640c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Argument error checks */ 650c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr); 660c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pSrcRef == NULL, OMX_Sts_BadArgErr); 670c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr); 680c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(!armIs8ByteAligned(pSrc), OMX_Sts_BadArgErr); 690c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(!armIs8ByteAligned(pSrcRef), OMX_Sts_BadArgErr); 700c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(!armIs8ByteAligned(pDst), OMX_Sts_BadArgErr); 710c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf((srcStep <= 0) || (srcStep & 7), OMX_Sts_BadArgErr); 720c1bc742181ded4930842b46e9507372f0b1b963James Dong 730c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Calculate the error block */ 740c1bc742181ded4930842b46e9507372f0b1b963James Dong for (y = 0, count = 0; 750c1bc742181ded4930842b46e9507372f0b1b963James Dong y < 8; 760c1bc742181ded4930842b46e9507372f0b1b963James Dong y++, pSrc += srcStep) 770c1bc742181ded4930842b46e9507372f0b1b963James Dong { 780c1bc742181ded4930842b46e9507372f0b1b963James Dong for (x = 0; x < 8; x++, count++) 790c1bc742181ded4930842b46e9507372f0b1b963James Dong { 800c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[count] = pSrc[x] - pSrcRef[count]; 810c1bc742181ded4930842b46e9507372f0b1b963James Dong } 820c1bc742181ded4930842b46e9507372f0b1b963James Dong } 830c1bc742181ded4930842b46e9507372f0b1b963James Dong 840c1bc742181ded4930842b46e9507372f0b1b963James Dong return OMX_Sts_NoErr; 850c1bc742181ded4930842b46e9507372f0b1b963James Dong 860c1bc742181ded4930842b46e9507372f0b1b963James Dong} 870c1bc742181ded4930842b46e9507372f0b1b963James Dong 880c1bc742181ded4930842b46e9507372f0b1b963James Dong/* End of file */ 89