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: omxVCM4P10_InvTransformDequant_LumaDC.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 * Description: 270c1bc742181ded4930842b46e9507372f0b1b963James Dong * This function will calculate 4x4 hadamard transform of luma DC coefficients 280c1bc742181ded4930842b46e9507372f0b1b963James Dong * and quantization 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#include "armVC.h" 380c1bc742181ded4930842b46e9507372f0b1b963James Dong 390c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 400c1bc742181ded4930842b46e9507372f0b1b963James Dong * Function: omxVCM4P10_InvTransformDequant_LumaDC (6.3.5.6.3) 410c1bc742181ded4930842b46e9507372f0b1b963James Dong * 420c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 430c1bc742181ded4930842b46e9507372f0b1b963James Dong * This function performs inverse 4x4 Hadamard transform and then dequantizes 440c1bc742181ded4930842b46e9507372f0b1b963James Dong * the coefficients. 450c1bc742181ded4930842b46e9507372f0b1b963James Dong * 460c1bc742181ded4930842b46e9507372f0b1b963James Dong * Input Arguments: 470c1bc742181ded4930842b46e9507372f0b1b963James Dong * 480c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrc - Pointer to the 4x4 array of the 4x4 Hadamard-transformed and 490c1bc742181ded4930842b46e9507372f0b1b963James Dong * quantized coefficients. 16 byte alignment required. 500c1bc742181ded4930842b46e9507372f0b1b963James Dong * iQP - Quantization parameter; must be in the range [0,51]. 510c1bc742181ded4930842b46e9507372f0b1b963James Dong * 520c1bc742181ded4930842b46e9507372f0b1b963James Dong * Output Arguments: 530c1bc742181ded4930842b46e9507372f0b1b963James Dong * 540c1bc742181ded4930842b46e9507372f0b1b963James Dong * pDst - Pointer to inverse-transformed and dequantized coefficients. 550c1bc742181ded4930842b46e9507372f0b1b963James Dong * 16-byte alignment required. 560c1bc742181ded4930842b46e9507372f0b1b963James Dong * 570c1bc742181ded4930842b46e9507372f0b1b963James Dong * Return Value: 580c1bc742181ded4930842b46e9507372f0b1b963James Dong * 590c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_NoErr - no error 600c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_BadArgErr - bad arguments; returned if any of the following 610c1bc742181ded4930842b46e9507372f0b1b963James Dong * conditions are true: 620c1bc742181ded4930842b46e9507372f0b1b963James Dong * - at least one of the following pointers is NULL: pSrc 630c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pSrc or pDst is not aligned on a 16-byte boundary 640c1bc742181ded4930842b46e9507372f0b1b963James Dong * 650c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 660c1bc742181ded4930842b46e9507372f0b1b963James DongOMXResult omxVCM4P10_InvTransformDequant_LumaDC( 670c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMX_S16* pSrc, 680c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S16* pDst, 690c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_U32 iQP 700c1bc742181ded4930842b46e9507372f0b1b963James Dong) 710c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 720c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT i, j; 730c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S32 m1[4][4], m2[4][4], Value; 740c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S32 QPer, V; 750c1bc742181ded4930842b46e9507372f0b1b963James Dong 760c1bc742181ded4930842b46e9507372f0b1b963James Dong /* check for argument error */ 770c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr) 780c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr) 790c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(iQP > 51, OMX_Sts_BadArgErr) 800c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(armNot16ByteAligned(pSrc), OMX_Sts_BadArgErr) 810c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(armNot16ByteAligned(pDst), OMX_Sts_BadArgErr) 820c1bc742181ded4930842b46e9507372f0b1b963James Dong 830c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Inv Hadamard Transform for DC Luma 4x4 block */ 840c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Horizontal */ 850c1bc742181ded4930842b46e9507372f0b1b963James Dong for (i = 0; i < 4; i++) 860c1bc742181ded4930842b46e9507372f0b1b963James Dong { 870c1bc742181ded4930842b46e9507372f0b1b963James Dong j = i * 4; 880c1bc742181ded4930842b46e9507372f0b1b963James Dong 890c1bc742181ded4930842b46e9507372f0b1b963James Dong m1[i][0] = pSrc[j + 0] + pSrc[j + 2]; /* a+c */ 900c1bc742181ded4930842b46e9507372f0b1b963James Dong m1[i][1] = pSrc[j + 1] + pSrc[j + 3]; /* b+d */ 910c1bc742181ded4930842b46e9507372f0b1b963James Dong m1[i][2] = pSrc[j + 0] - pSrc[j + 2]; /* a-c */ 920c1bc742181ded4930842b46e9507372f0b1b963James Dong m1[i][3] = pSrc[j + 1] - pSrc[j + 3]; /* b-d */ 930c1bc742181ded4930842b46e9507372f0b1b963James Dong 940c1bc742181ded4930842b46e9507372f0b1b963James Dong m2[i][0] = m1[i][0] + m1[i][1]; /* a+b+c+d */ 950c1bc742181ded4930842b46e9507372f0b1b963James Dong m2[i][1] = m1[i][2] + m1[i][3]; /* a+b-c-d */ 960c1bc742181ded4930842b46e9507372f0b1b963James Dong m2[i][2] = m1[i][2] - m1[i][3]; /* a-b-c+d */ 970c1bc742181ded4930842b46e9507372f0b1b963James Dong m2[i][3] = m1[i][0] - m1[i][1]; /* a-b+c-d */ 980c1bc742181ded4930842b46e9507372f0b1b963James Dong 990c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1000c1bc742181ded4930842b46e9507372f0b1b963James Dong 1010c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Vertical */ 1020c1bc742181ded4930842b46e9507372f0b1b963James Dong for (i = 0; i < 4; i++) 1030c1bc742181ded4930842b46e9507372f0b1b963James Dong { 1040c1bc742181ded4930842b46e9507372f0b1b963James Dong m1[0][i] = m2[0][i] + m2[2][i]; 1050c1bc742181ded4930842b46e9507372f0b1b963James Dong m1[1][i] = m2[1][i] + m2[3][i]; 1060c1bc742181ded4930842b46e9507372f0b1b963James Dong m1[2][i] = m2[0][i] - m2[2][i]; 1070c1bc742181ded4930842b46e9507372f0b1b963James Dong m1[3][i] = m2[1][i] - m2[3][i]; 1080c1bc742181ded4930842b46e9507372f0b1b963James Dong 1090c1bc742181ded4930842b46e9507372f0b1b963James Dong m2[0][i] = m1[0][i] + m1[1][i]; 1100c1bc742181ded4930842b46e9507372f0b1b963James Dong m2[1][i] = m1[2][i] + m1[3][i]; 1110c1bc742181ded4930842b46e9507372f0b1b963James Dong m2[2][i] = m1[2][i] - m1[3][i]; 1120c1bc742181ded4930842b46e9507372f0b1b963James Dong m2[3][i] = m1[0][i] - m1[1][i]; 1130c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1140c1bc742181ded4930842b46e9507372f0b1b963James Dong 1150c1bc742181ded4930842b46e9507372f0b1b963James Dong 1160c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Scaling */ 1170c1bc742181ded4930842b46e9507372f0b1b963James Dong QPer = iQP / 6; 1180c1bc742181ded4930842b46e9507372f0b1b963James Dong V = armVCM4P10_VMatrix [iQP % 6][0]; 1190c1bc742181ded4930842b46e9507372f0b1b963James Dong 1200c1bc742181ded4930842b46e9507372f0b1b963James Dong for (j = 0; j < 4; j++) 1210c1bc742181ded4930842b46e9507372f0b1b963James Dong { 1220c1bc742181ded4930842b46e9507372f0b1b963James Dong for (i = 0; i < 4; i++) 1230c1bc742181ded4930842b46e9507372f0b1b963James Dong { 1240c1bc742181ded4930842b46e9507372f0b1b963James Dong if (QPer < 2) 1250c1bc742181ded4930842b46e9507372f0b1b963James Dong { 1260c1bc742181ded4930842b46e9507372f0b1b963James Dong Value = (m2[j][i] * V + (1 << (1 - QPer))) >> (2 - QPer); 1270c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1280c1bc742181ded4930842b46e9507372f0b1b963James Dong else 1290c1bc742181ded4930842b46e9507372f0b1b963James Dong { 1300c1bc742181ded4930842b46e9507372f0b1b963James Dong Value = m2[j][i] * V * (1 << (QPer - 2)); 1310c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1320c1bc742181ded4930842b46e9507372f0b1b963James Dong 1330c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[j * 4 + i] = (OMX_S16) Value; 1340c1bc742181ded4930842b46e9507372f0b1b963James Dong 1350c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1360c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1370c1bc742181ded4930842b46e9507372f0b1b963James Dong return OMX_Sts_NoErr; 1380c1bc742181ded4930842b46e9507372f0b1b963James Dong} 1390c1bc742181ded4930842b46e9507372f0b1b963James Dong 1400c1bc742181ded4930842b46e9507372f0b1b963James Dong/***************************************************************************** 1410c1bc742181ded4930842b46e9507372f0b1b963James Dong * END OF FILE 1420c1bc742181ded4930842b46e9507372f0b1b963James Dong *****************************************************************************/ 1430c1bc742181ded4930842b46e9507372f0b1b963James Dong 144