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 * 200c1bc742181ded4930842b46e9507372f0b1b963James Dong * File Name: omxVCM4P10_TransformDequantLumaDCFromPair.c 210c1bc742181ded4930842b46e9507372f0b1b963James Dong * OpenMAX DL: v1.0.2 220c1bc742181ded4930842b46e9507372f0b1b963James Dong * Revision: 9641 230c1bc742181ded4930842b46e9507372f0b1b963James Dong * Date: Thursday, February 7, 2008 240c1bc742181ded4930842b46e9507372f0b1b963James Dong * 250c1bc742181ded4930842b46e9507372f0b1b963James Dong * 260c1bc742181ded4930842b46e9507372f0b1b963James Dong * 270c1bc742181ded4930842b46e9507372f0b1b963James Dong * 280c1bc742181ded4930842b46e9507372f0b1b963James Dong * H.264 inverse quantize and transform module 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 * Description: 410c1bc742181ded4930842b46e9507372f0b1b963James Dong * Dequantize Luma DC block 420c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 430c1bc742181ded4930842b46e9507372f0b1b963James Dong 440c1bc742181ded4930842b46e9507372f0b1b963James Dongstatic void DequantLumaDC4x4( 450c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S16* pDst, 460c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT QP 470c1bc742181ded4930842b46e9507372f0b1b963James Dong) 480c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 490c1bc742181ded4930842b46e9507372f0b1b963James Dong int Shift = (QP/6)-2 ; 500c1bc742181ded4930842b46e9507372f0b1b963James Dong int Scale = armVCM4P10_VMatrix[QP%6][0]; 510c1bc742181ded4930842b46e9507372f0b1b963James Dong int i, Round, Value; 520c1bc742181ded4930842b46e9507372f0b1b963James Dong 530c1bc742181ded4930842b46e9507372f0b1b963James Dong if (Shift >= 0) 540c1bc742181ded4930842b46e9507372f0b1b963James Dong { 550c1bc742181ded4930842b46e9507372f0b1b963James Dong for (i=0; i<16; i++) 560c1bc742181ded4930842b46e9507372f0b1b963James Dong { 570c1bc742181ded4930842b46e9507372f0b1b963James Dong Value = (pDst[i] * Scale) << Shift; 580c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[i] = (OMX_S16)Value; 590c1bc742181ded4930842b46e9507372f0b1b963James Dong } 600c1bc742181ded4930842b46e9507372f0b1b963James Dong } 610c1bc742181ded4930842b46e9507372f0b1b963James Dong else 620c1bc742181ded4930842b46e9507372f0b1b963James Dong { 630c1bc742181ded4930842b46e9507372f0b1b963James Dong Shift = -Shift;; 640c1bc742181ded4930842b46e9507372f0b1b963James Dong Round = 1<<(Shift-1); 650c1bc742181ded4930842b46e9507372f0b1b963James Dong 660c1bc742181ded4930842b46e9507372f0b1b963James Dong for (i=0; i<16; i++) 670c1bc742181ded4930842b46e9507372f0b1b963James Dong { 680c1bc742181ded4930842b46e9507372f0b1b963James Dong Value = (pDst[i] * Scale + Round) >> Shift; 690c1bc742181ded4930842b46e9507372f0b1b963James Dong pDst[i] = (OMX_S16)Value; 700c1bc742181ded4930842b46e9507372f0b1b963James Dong } 710c1bc742181ded4930842b46e9507372f0b1b963James Dong } 720c1bc742181ded4930842b46e9507372f0b1b963James Dong} 730c1bc742181ded4930842b46e9507372f0b1b963James Dong 740c1bc742181ded4930842b46e9507372f0b1b963James Dong 750c1bc742181ded4930842b46e9507372f0b1b963James Dong 760c1bc742181ded4930842b46e9507372f0b1b963James Dong/* 770c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 780c1bc742181ded4930842b46e9507372f0b1b963James Dong * Inverse Transform DC 4x4 Coefficients 790c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 800c1bc742181ded4930842b46e9507372f0b1b963James Dongstatic void InvTransformDC4x4(OMX_S16* pData) 810c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 820c1bc742181ded4930842b46e9507372f0b1b963James Dong int i; 830c1bc742181ded4930842b46e9507372f0b1b963James Dong 840c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Transform rows */ 850c1bc742181ded4930842b46e9507372f0b1b963James Dong for (i=0; i<16; i+=4) 860c1bc742181ded4930842b46e9507372f0b1b963James Dong { 870c1bc742181ded4930842b46e9507372f0b1b963James Dong int c0 = pData[i+0]; 880c1bc742181ded4930842b46e9507372f0b1b963James Dong int c1 = pData[i+1]; 890c1bc742181ded4930842b46e9507372f0b1b963James Dong int c2 = pData[i+2]; 900c1bc742181ded4930842b46e9507372f0b1b963James Dong int c3 = pData[i+3]; 910c1bc742181ded4930842b46e9507372f0b1b963James Dong pData[i+0] = (OMX_S16)(c0+c1+c2+c3); 920c1bc742181ded4930842b46e9507372f0b1b963James Dong pData[i+1] = (OMX_S16)(c0+c1-c2-c3); 930c1bc742181ded4930842b46e9507372f0b1b963James Dong pData[i+2] = (OMX_S16)(c0-c1-c2+c3); 940c1bc742181ded4930842b46e9507372f0b1b963James Dong pData[i+3] = (OMX_S16)(c0-c1+c2-c3); 950c1bc742181ded4930842b46e9507372f0b1b963James Dong } 960c1bc742181ded4930842b46e9507372f0b1b963James Dong 970c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Transform columns */ 980c1bc742181ded4930842b46e9507372f0b1b963James Dong for (i=0; i<4; i++) 990c1bc742181ded4930842b46e9507372f0b1b963James Dong { 1000c1bc742181ded4930842b46e9507372f0b1b963James Dong int c0 = pData[i+0]; 1010c1bc742181ded4930842b46e9507372f0b1b963James Dong int c1 = pData[i+4]; 1020c1bc742181ded4930842b46e9507372f0b1b963James Dong int c2 = pData[i+8]; 1030c1bc742181ded4930842b46e9507372f0b1b963James Dong int c3 = pData[i+12]; 1040c1bc742181ded4930842b46e9507372f0b1b963James Dong pData[i+0] = (OMX_S16)(c0+c1+c2+c3); 1050c1bc742181ded4930842b46e9507372f0b1b963James Dong pData[i+4] = (OMX_S16)(c0+c1-c2-c3); 1060c1bc742181ded4930842b46e9507372f0b1b963James Dong pData[i+8] = (OMX_S16)(c0-c1-c2+c3); 1070c1bc742181ded4930842b46e9507372f0b1b963James Dong pData[i+12] = (OMX_S16)(c0-c1+c2-c3); 1080c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1090c1bc742181ded4930842b46e9507372f0b1b963James Dong} 1100c1bc742181ded4930842b46e9507372f0b1b963James Dong 1110c1bc742181ded4930842b46e9507372f0b1b963James Dong 1120c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 1130c1bc742181ded4930842b46e9507372f0b1b963James Dong * Function: omxVCM4P10_TransformDequantLumaDCFromPair (6.3.4.2.1) 1140c1bc742181ded4930842b46e9507372f0b1b963James Dong * 1150c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 1160c1bc742181ded4930842b46e9507372f0b1b963James Dong * Reconstructs the 4x4 LumaDC block from the coefficient-position pair 1170c1bc742181ded4930842b46e9507372f0b1b963James Dong * buffer, performs integer inverse, and dequantization for 4x4 LumaDC 1180c1bc742181ded4930842b46e9507372f0b1b963James Dong * coefficients, and updates the pair buffer pointer to the next non-empty 1190c1bc742181ded4930842b46e9507372f0b1b963James Dong * block. 1200c1bc742181ded4930842b46e9507372f0b1b963James Dong * 1210c1bc742181ded4930842b46e9507372f0b1b963James Dong * Input Arguments: 1220c1bc742181ded4930842b46e9507372f0b1b963James Dong * 1230c1bc742181ded4930842b46e9507372f0b1b963James Dong * ppSrc - Double pointer to residual coefficient-position pair buffer 1240c1bc742181ded4930842b46e9507372f0b1b963James Dong * output by CALVC decoding 1250c1bc742181ded4930842b46e9507372f0b1b963James Dong * QP - Quantization parameter QpY 1260c1bc742181ded4930842b46e9507372f0b1b963James Dong * 1270c1bc742181ded4930842b46e9507372f0b1b963James Dong * Output Arguments: 1280c1bc742181ded4930842b46e9507372f0b1b963James Dong * 1290c1bc742181ded4930842b46e9507372f0b1b963James Dong * ppSrc - *ppSrc is updated to the start of next non empty block 1300c1bc742181ded4930842b46e9507372f0b1b963James Dong * pDst - Pointer to the reconstructed 4x4 LumaDC coefficients buffer; must 1310c1bc742181ded4930842b46e9507372f0b1b963James Dong * be aligned on a 8-byte boundary. 1320c1bc742181ded4930842b46e9507372f0b1b963James Dong * 1330c1bc742181ded4930842b46e9507372f0b1b963James Dong * Return Value: 1340c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_NoErr, if the function runs without error. 1350c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_BadArgErr - bad arguments: if one of the following cases occurs: 1360c1bc742181ded4930842b46e9507372f0b1b963James Dong * - ppSrc or pDst is NULL. 1370c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pDst is not 8 byte aligned. 1380c1bc742181ded4930842b46e9507372f0b1b963James Dong * - QP is not in the range of [0-51]. 1390c1bc742181ded4930842b46e9507372f0b1b963James Dong * 1400c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 1410c1bc742181ded4930842b46e9507372f0b1b963James Dong 1420c1bc742181ded4930842b46e9507372f0b1b963James DongOMXResult omxVCM4P10_TransformDequantLumaDCFromPair( 1430c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMX_U8 **ppSrc, 1440c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S16* pDst, 1450c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT QP 1460c1bc742181ded4930842b46e9507372f0b1b963James Dong ) 1470c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 1480c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(ppSrc == NULL, OMX_Sts_BadArgErr); 1490c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(*ppSrc == NULL, OMX_Sts_BadArgErr); 1500c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr); 1510c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(armNot8ByteAligned(pDst), OMX_Sts_BadArgErr); 1520c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(QP<0, OMX_Sts_BadArgErr); 1530c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(QP>51, OMX_Sts_BadArgErr); 1540c1bc742181ded4930842b46e9507372f0b1b963James Dong 1550c1bc742181ded4930842b46e9507372f0b1b963James Dong armVCM4P10_UnpackBlock4x4(ppSrc, pDst); 1560c1bc742181ded4930842b46e9507372f0b1b963James Dong /*InvTransformDequantLumaDC4x4(pDst, QP);*/ 1570c1bc742181ded4930842b46e9507372f0b1b963James Dong InvTransformDC4x4(pDst); 1580c1bc742181ded4930842b46e9507372f0b1b963James Dong DequantLumaDC4x4(pDst, QP); 1590c1bc742181ded4930842b46e9507372f0b1b963James Dong 1600c1bc742181ded4930842b46e9507372f0b1b963James Dong return OMX_Sts_NoErr; 1610c1bc742181ded4930842b46e9507372f0b1b963James Dong} 1620c1bc742181ded4930842b46e9507372f0b1b963James Dong 1630c1bc742181ded4930842b46e9507372f0b1b963James Dong/* End of file */ 164