10c1bc742181ded4930842b46e9507372f0b1b963James Dong/* ---------------------------------------------------------------- 20c1bc742181ded4930842b46e9507372f0b1b963James Dong * 30c1bc742181ded4930842b46e9507372f0b1b963James Dong * 40c1bc742181ded4930842b46e9507372f0b1b963James Dong * File Name: armVCM4P10_FwdTransformResidual4x4.c 50c1bc742181ded4930842b46e9507372f0b1b963James Dong * OpenMAX DL: v1.0.2 60c1bc742181ded4930842b46e9507372f0b1b963James Dong * Revision: 9641 70c1bc742181ded4930842b46e9507372f0b1b963James Dong * Date: Thursday, February 7, 2008 80c1bc742181ded4930842b46e9507372f0b1b963James Dong * 90c1bc742181ded4930842b46e9507372f0b1b963James Dong * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. 100c1bc742181ded4930842b46e9507372f0b1b963James Dong * 110c1bc742181ded4930842b46e9507372f0b1b963James Dong * 120c1bc742181ded4930842b46e9507372f0b1b963James Dong * 130c1bc742181ded4930842b46e9507372f0b1b963James Dong * H.264 transform module 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#include "armVC.h" 230c1bc742181ded4930842b46e9507372f0b1b963James Dong 240c1bc742181ded4930842b46e9507372f0b1b963James Dong/* 250c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 260c1bc742181ded4930842b46e9507372f0b1b963James Dong * Forward Transform Residual 4x4 Coefficients 270c1bc742181ded4930842b46e9507372f0b1b963James Dong * 280c1bc742181ded4930842b46e9507372f0b1b963James Dong * Parameters: 290c1bc742181ded4930842b46e9507372f0b1b963James Dong * [in] pSrc Source 4x4 block 300c1bc742181ded4930842b46e9507372f0b1b963James Dong * [out] pDst Destination 4x4 block 310c1bc742181ded4930842b46e9507372f0b1b963James Dong * 320c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 330c1bc742181ded4930842b46e9507372f0b1b963James Dongvoid armVCM4P10_FwdTransformResidual4x4(OMX_S16* pDst, OMX_S16 *pSrc) 340c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 350c1bc742181ded4930842b46e9507372f0b1b963James Dong int i; 360c1bc742181ded4930842b46e9507372f0b1b963James Dong 370c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Transform rows */ 380c1bc742181ded4930842b46e9507372f0b1b963James Dong for (i=0; i<16; i+=4) 390c1bc742181ded4930842b46e9507372f0b1b963James Dong { 400c1bc742181ded4930842b46e9507372f0b1b963James Dong int d0 = pSrc[i+0]; 410c1bc742181ded4930842b46e9507372f0b1b963James Dong int d1 = pSrc[i+1]; 420c1bc742181ded4930842b46e9507372f0b1b963James Dong int d2 = pSrc[i+2]; 430c1bc742181ded4930842b46e9507372f0b1b963James Dong int d3 = pSrc[i+3]; 440c1bc742181ded4930842b46e9507372f0b1b963James Dong int e0 = d0 + d3; 450c1bc742181ded4930842b46e9507372f0b1b963James Dong int e1 = d0 - d3; 460c1bc742181ded4930842b46e9507372f0b1b963James Dong int e2 = d1 + d2; 470c1bc742181ded4930842b46e9507372f0b1b963James Dong int e3 = d1 - d2; 480c1bc742181ded4930842b46e9507372f0b1b963James Dong int f0 = e0 + e2; 490c1bc742181ded4930842b46e9507372f0b1b963James Dong int f1 = (e1 << 1) + e3; 500c1bc742181ded4930842b46e9507372f0b1b963James Dong int f2 = e0 - e2; 510c1bc742181ded4930842b46e9507372f0b1b963James Dong int f3 = e1 - (e3 << 1); 520c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[i+0] = (OMX_S16)f0; 530c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[i+1] = (OMX_S16)f1; 540c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[i+2] = (OMX_S16)f2; 550c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[i+3] = (OMX_S16)f3; 560c1bc742181ded4930842b46e9507372f0b1b963James Dong } 570c1bc742181ded4930842b46e9507372f0b1b963James Dong 580c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Transform columns */ 590c1bc742181ded4930842b46e9507372f0b1b963James Dong for (i=0; i<4; i++) 600c1bc742181ded4930842b46e9507372f0b1b963James Dong { 610c1bc742181ded4930842b46e9507372f0b1b963James Dong int f0 = pDst[i+0]; 620c1bc742181ded4930842b46e9507372f0b1b963James Dong int f1 = pDst[i+4]; 630c1bc742181ded4930842b46e9507372f0b1b963James Dong int f2 = pDst[i+8]; 640c1bc742181ded4930842b46e9507372f0b1b963James Dong int f3 = pDst[i+12]; 650c1bc742181ded4930842b46e9507372f0b1b963James Dong int g0 = f0 + f3; 660c1bc742181ded4930842b46e9507372f0b1b963James Dong int g1 = f0 - f3; 670c1bc742181ded4930842b46e9507372f0b1b963James Dong int g2 = f1 + f2; 680c1bc742181ded4930842b46e9507372f0b1b963James Dong int g3 = f1 - f2; 690c1bc742181ded4930842b46e9507372f0b1b963James Dong int h0 = g0 + g2; 700c1bc742181ded4930842b46e9507372f0b1b963James Dong int h1 = (g1 << 1) + g3; 710c1bc742181ded4930842b46e9507372f0b1b963James Dong int h2 = g0 - g2; 720c1bc742181ded4930842b46e9507372f0b1b963James Dong int h3 = g1 - (g3 << 1); 730c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[i+0] = (OMX_S16) h0; 740c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[i+4] = (OMX_S16) h1; 750c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[i+8] = (OMX_S16) h2; 760c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[i+12] = (OMX_S16) h3; 770c1bc742181ded4930842b46e9507372f0b1b963James Dong } 780c1bc742181ded4930842b46e9507372f0b1b963James Dong} 79