10d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/****************************************************************************** 20d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* 30d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore 40d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* 50d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* Licensed under the Apache License, Version 2.0 (the "License"); 60d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* you may not use this file except in compliance with the License. 70d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* You may obtain a copy of the License at: 80d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* 90d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* http://www.apache.org/licenses/LICENSE-2.0 100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* 110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* Unless required by applicable law or agreed to in writing, software 120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* distributed under the License is distributed on an "AS IS" BASIS, 130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* See the License for the specific language governing permissions and 150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* limitations under the License. 160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar* 170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar******************************************************************************/ 180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/** 190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @file 210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * ihevc_itrans_recon_32x32.c 220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Contains function definitions for inverse transform and reconstruction 32x32 250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @author 280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 100470 290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par List of Functions: 310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * - ihevc_itrans_recon_32x32() 320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include <stdio.h> 390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include <string.h> 400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_typedefs.h" 410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_macros.h" 420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_platform_macros.h" 430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_defs.h" 440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_trans_tables.h" 450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_itrans_recon.h" 460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_func_selector.h" 470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_trans_macros.h" 480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/** 510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * This function performs Inverse transform and reconstruction for 32x32 550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * input block 560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par Description: 580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Performs inverse transform and adds the prediction data and clips output 590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * to 8 bit 600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_src 620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input 32x32 coefficients 630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_tmp 650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Temporary 32x32 buffer for storing inverse 660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * transform 680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1st stage output 690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pu1_pred 710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Prediction 32x32 block 720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[out] pu1_dst 740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output 32x32 block 750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] src_strd 770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input stride 780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pred_strd 800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Prediction stride 810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] dst_strd 830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output Stride 840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] shift 860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output shift 870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_cols 890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero columns in pi2_src 900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @returns Void 920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_itrans_recon_32x32(WORD16 *pi2_src, 1000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_tmp, 1010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar UWORD8 *pu1_pred, 1020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar UWORD8 *pu1_dst, 1030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 1040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 pred_strd, 1050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 1060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols, 1070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_rows) 1080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 1090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 j, k; 1100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 e[16], o[16]; 1110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 ee[8], eo[8]; 1120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 eee[4], eeo[4]; 1130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 eeee[2], eeeo[2]; 1140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 1150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 shift; 1160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_tmp_orig; 1170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 trans_size; 1180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_rows_2nd_stage = zero_cols; 1190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 row_limit_2nd_stage; 1200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar trans_size = TRANS_SIZE_32; 1220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp_orig = pi2_tmp; 1230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 0xFFFFFFF0) == 0xFFFFFFF0) 1250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar row_limit_2nd_stage = 4; 1260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else if((zero_cols & 0xFFFFFF00) == 0xFFFFFF00) 1270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar row_limit_2nd_stage = 8; 1280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 1290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar row_limit_2nd_stage = TRANS_SIZE_32; 1300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_rows & 0xFFFFFFF0) == 0xFFFFFFF0) /* First 4 rows of input are non-zero */ 1320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 1340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /**********************************START - IT_RECON_32x32****************************************/ 1350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 1360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 1st stage */ 1370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_1; 1380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 1390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < row_limit_2nd_stage; j++) 1410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 1430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 1440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_tmp, 0, trans_size * sizeof(WORD16)); 1460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 1480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 1500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 1510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_src[src_strd] 1530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 1540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[3 * src_strd]; 1550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 1570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_src[2 * src_strd]; 1590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar// for(k = 0; k < 4; k++) 1610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[0] = 0; 1630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[1] = 0; 1640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[2] = 0; 1650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[3] = 0; 1660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = 0; 1680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = 0; 1690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = g_ai2_ihevc_trans_32[0][0] * pi2_src[0]; 1700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = g_ai2_ihevc_trans_32[0][1] * pi2_src[0]; 1710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 1730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 1740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 1750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 1760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 1770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 1780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 1800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 1810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 1830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 1850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 1860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 1880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[k] = 1900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 1910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[k + 16] = 1920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 1930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 1960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp += trans_size; 1970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 1980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp = pi2_tmp_orig; 2010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 2nd stage */ 2030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_2; 2040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 2050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_rows_2nd_stage & 0xFFFFFFF0) == 0xFFFFFFF0) /* First 4 rows of output of 1st stage are non-zero */ 2060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 2080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 2100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 2110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_tmp[trans_size] 2130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 2140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size]; 2150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 2170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_tmp[2 * trans_size]; 2190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar// for(k = 0; k < 4; k++) 2210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[0] = 0; 2230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[1] = 0; 2240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[2] = 0; 2250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[3] = 0; 2260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = 0; 2280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = 0; 2290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = g_ai2_ihevc_trans_32[0][0] * pi2_tmp[0]; 2300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = g_ai2_ihevc_trans_32[0][1] * pi2_tmp[0]; 2310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 2330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 2340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 2350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 2360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 2370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 2380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 2400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 2410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 2430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 2450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 2460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 2480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 2500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 2510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 2520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k] = CLIP_U8((itrans_out + pu1_pred[k])); 2530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 2540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 2550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k + 16] = CLIP_U8((itrans_out + pu1_pred[k + 16])); 2560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 2580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 2590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 2600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else if((zero_rows_2nd_stage & 0xFFFFFF00) == 0xFFFFFF00) /* First 8 rows of output of 1st stage are non-zero */ 2630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 2650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 2670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 2680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_tmp[trans_size] 2700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 2710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size] 2720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[5][k] 2730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[5 * trans_size] 2740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[7][k] 2750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[7 * trans_size]; 2760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 2780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_tmp[2 * trans_size] 2800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[6][k] 2810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[6 * trans_size]; 2820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 2840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[k] = g_ai2_ihevc_trans_32[4][k] * pi2_tmp[4 * trans_size]; 2860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = 0; 2880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = 0; 2890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = g_ai2_ihevc_trans_32[0][0] * pi2_tmp[0]; 2900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = g_ai2_ihevc_trans_32[0][1] * pi2_tmp[0]; 2910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 2930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 2940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 2950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 2960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 2970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 2980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 3000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 3010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 3030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 3050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 3060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 3080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 3100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 3110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 3120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k] = CLIP_U8((itrans_out + pu1_pred[k])); 3130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 3140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 3150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k + 16] = CLIP_U8((itrans_out + pu1_pred[k + 16])); 3160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 3180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 3190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 3200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else /* All rows of output of 1st stage are non-zero */ 3230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 3250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 3270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 3280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_tmp[trans_size] 3300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 3310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size] 3320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[5][k] 3330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[5 * trans_size] 3340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[7][k] 3350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[7 * trans_size] 3360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[9][k] 3370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[9 * trans_size] 3380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[11][k] 3390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[11 * trans_size] 3400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[13][k] 3410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[13 * trans_size] 3420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[15][k] 3430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[15 * trans_size] 3440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[17][k] 3450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[17 * trans_size] 3460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[19][k] 3470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[19 * trans_size] 3480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[21][k] 3490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[21 * trans_size] 3500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[23][k] 3510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[23 * trans_size] 3520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[25][k] 3530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[25 * trans_size] 3540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[27][k] 3550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[27 * trans_size] 3560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[29][k] 3570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[29 * trans_size] 3580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[31][k] 3590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[31 * trans_size]; 3600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 3620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_tmp[2 * trans_size] 3640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[6][k] 3650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[6 * trans_size] 3660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[10][k] 3670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[10 * trans_size] 3680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[14][k] 3690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[14 * trans_size] 3700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[18][k] 3710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[18 * trans_size] 3720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[22][k] 3730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[22 * trans_size] 3740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[26][k] 3750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[26 * trans_size] 3760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[30][k] 3770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[30 * trans_size]; 3780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 3800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[k] = g_ai2_ihevc_trans_32[4][k] * pi2_tmp[4 * trans_size] 3820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[12][k] 3830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[12 * trans_size] 3840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[20][k] 3850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[20 * trans_size] 3860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[28][k] 3870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[28 * trans_size]; 3880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = 3900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[8][0] * pi2_tmp[8 * trans_size] 3910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[24][0] 3920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[24 3930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 3940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = 3950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[8][1] * pi2_tmp[8 * trans_size] 3960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[24][1] 3970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[24 3980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 3990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = 4000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[0][0] * pi2_tmp[0] 4010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[16][0] 4020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[16 4030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 4040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = 4050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[0][1] * pi2_tmp[0] 4060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[16][1] 4070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[16 4080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 4090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 4110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 4120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 4130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 4140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 4150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 4160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 4180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 4190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 4210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 4230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 4240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 4260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 4280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 4290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 4300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k] = CLIP_U8((itrans_out + pu1_pred[k])); 4310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 4320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 4330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k + 16] = CLIP_U8((itrans_out + pu1_pred[k + 16])); 4340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 4360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 4370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 4380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 4410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************END - IT_RECON_32x32****************************************/ 4420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 4430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else if((zero_rows & 0xFFFFFF00) == 0xFFFFFF00) /* First 8 rows of input are non-zero */ 4450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 4470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /**********************************START - IT_RECON_32x32****************************************/ 4480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 4490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 1st stage */ 4500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_1; 4510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 4520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < row_limit_2nd_stage; j++) 4540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 4560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 4570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_tmp, 0, trans_size * sizeof(WORD16)); 4590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 4610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 4630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 4640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_src[src_strd] 4660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 4670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[3 * src_strd] 4680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[5][k] 4690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[5 * src_strd] 4700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[7][k] 4710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[7 * src_strd]; 4720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 4740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_src[2 * src_strd] 4760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[6][k] 4770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[6 * src_strd]; 4780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 4800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[k] = g_ai2_ihevc_trans_32[4][k] * pi2_src[4 * src_strd]; 4820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = 0; 4840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = 0; 4850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = g_ai2_ihevc_trans_32[0][0] * pi2_src[0]; 4860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = g_ai2_ihevc_trans_32[0][1] * pi2_src[0]; 4870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 4890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 4900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 4910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 4920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 4930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 4940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 4960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 4970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 4990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 5010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 5020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 5040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[k] = 5060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 5070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[k + 16] = 5080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 5090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 5120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp += trans_size; 5130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 5140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 5160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp = pi2_tmp_orig; 5170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 5180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 2nd stage */ 5190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_2; 5200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 5210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_rows_2nd_stage & 0xFFFFFFF0) == 0xFFFFFFF0) /* First 4 rows of output of 1st stage are non-zero */ 5220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 5240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 5260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 5270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_tmp[trans_size] 5290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 5300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size]; 5310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 5330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_tmp[2 * trans_size]; 5350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar// for(k = 0; k < 4; k++) 5370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[0] = 0; 5390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[1] = 0; 5400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[2] = 0; 5410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[3] = 0; 5420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = 0; 5440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = 0; 5450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = g_ai2_ihevc_trans_32[0][0] * pi2_tmp[0]; 5460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = g_ai2_ihevc_trans_32[0][1] * pi2_tmp[0]; 5470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 5480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 5490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 5500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 5510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 5520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 5530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 5540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 5560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 5570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 5590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 5610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 5620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 5640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 5660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 5670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 5680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k] = CLIP_U8((itrans_out + pu1_pred[k])); 5690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 5700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 5710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k + 16] = CLIP_U8((itrans_out + pu1_pred[k + 16])); 5720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 5740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 5750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 5760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else if((zero_rows_2nd_stage & 0xFFFFFF00) == 0xFFFFFF00) /* First 8 rows of output of 1st stage are non-zero */ 5790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 5810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 5830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 5840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_tmp[trans_size] 5860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 5870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size] 5880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[5][k] 5890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[5 * trans_size] 5900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[7][k] 5910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[7 * trans_size]; 5920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 5940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_tmp[2 * trans_size] 5960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[6][k] 5970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[6 * trans_size]; 5980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 6000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[k] = g_ai2_ihevc_trans_32[4][k] * pi2_tmp[4 * trans_size]; 6020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = 0; 6040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = 0; 6050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = g_ai2_ihevc_trans_32[0][0] * pi2_tmp[0]; 6060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = g_ai2_ihevc_trans_32[0][1] * pi2_tmp[0]; 6070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 6080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 6090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 6100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 6110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 6120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 6130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 6140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 6160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 6170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 6190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 6210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 6220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 6240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 6260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 6270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 6280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k] = CLIP_U8((itrans_out + pu1_pred[k])); 6290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 6300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 6310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k + 16] = CLIP_U8((itrans_out + pu1_pred[k + 16])); 6320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 6340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 6350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 6360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else /* All rows of output of 1st stage are non-zero */ 6390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 6410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 6430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 6440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_tmp[trans_size] 6460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 6470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size] 6480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[5][k] 6490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[5 * trans_size] 6500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[7][k] 6510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[7 * trans_size] 6520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[9][k] 6530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[9 * trans_size] 6540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[11][k] 6550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[11 * trans_size] 6560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[13][k] 6570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[13 * trans_size] 6580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[15][k] 6590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[15 * trans_size] 6600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[17][k] 6610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[17 * trans_size] 6620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[19][k] 6630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[19 * trans_size] 6640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[21][k] 6650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[21 * trans_size] 6660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[23][k] 6670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[23 * trans_size] 6680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[25][k] 6690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[25 * trans_size] 6700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[27][k] 6710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[27 * trans_size] 6720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[29][k] 6730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[29 * trans_size] 6740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[31][k] 6750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[31 * trans_size]; 6760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 6780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_tmp[2 * trans_size] 6800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[6][k] 6810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[6 * trans_size] 6820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[10][k] 6830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[10 * trans_size] 6840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[14][k] 6850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[14 * trans_size] 6860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[18][k] 6870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[18 * trans_size] 6880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[22][k] 6890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[22 * trans_size] 6900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[26][k] 6910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[26 * trans_size] 6920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[30][k] 6930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[30 * trans_size]; 6940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 6960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[k] = g_ai2_ihevc_trans_32[4][k] * pi2_tmp[4 * trans_size] 6980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[12][k] 6990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[12 * trans_size] 7000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[20][k] 7010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[20 * trans_size] 7020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[28][k] 7030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[28 * trans_size]; 7040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = 7060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[8][0] * pi2_tmp[8 * trans_size] 7070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[24][0] 7080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[24 7090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 7100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = 7110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[8][1] * pi2_tmp[8 * trans_size] 7120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[24][1] 7130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[24 7140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 7150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = 7160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[0][0] * pi2_tmp[0] 7170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[16][0] 7180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[16 7190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 7200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = 7210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[0][1] * pi2_tmp[0] 7220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[16][1] 7230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[16 7240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 7250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 7270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 7280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 7290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 7300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 7310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 7320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 7340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 7350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 7370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 7390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 7400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 7420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 7440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 7450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 7460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k] = CLIP_U8((itrans_out + pu1_pred[k])); 7470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 7480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 7490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k + 16] = CLIP_U8((itrans_out + pu1_pred[k + 16])); 7500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 7520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 7530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 7540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 7570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************END - IT_RECON_32x32****************************************/ 7580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 7590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else /* All rows of input are non-zero */ 7610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 7630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /**********************************START - IT_RECON_32x32****************************************/ 7640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 7650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 1st stage */ 7660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_1; 7670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 7680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < row_limit_2nd_stage; j++) 7700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 7720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 7730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_tmp, 0, trans_size * sizeof(WORD16)); 7750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 7770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 7790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 7800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_src[src_strd] 7820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 7830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[3 * src_strd] 7840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[5][k] 7850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[5 * src_strd] 7860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[7][k] 7870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[7 * src_strd] 7880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[9][k] 7890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[9 * src_strd] 7900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[11][k] 7910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[11 * src_strd] 7920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[13][k] 7930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[13 * src_strd] 7940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[15][k] 7950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[15 * src_strd] 7960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[17][k] 7970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[17 * src_strd] 7980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[19][k] 7990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[19 * src_strd] 8000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[21][k] 8010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[21 * src_strd] 8020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[23][k] 8030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[23 * src_strd] 8040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[25][k] 8050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[25 * src_strd] 8060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[27][k] 8070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[27 * src_strd] 8080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[29][k] 8090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[29 * src_strd] 8100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[31][k] 8110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[31 * src_strd]; 8120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 8130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 8140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_src[2 * src_strd] 8160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[6][k] 8170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[6 * src_strd] 8180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[10][k] 8190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[10 * src_strd] 8200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[14][k] 8210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[14 * src_strd] 8220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[18][k] 8230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[18 * src_strd] 8240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[22][k] 8250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[22 * src_strd] 8260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[26][k] 8270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[26 * src_strd] 8280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[30][k] 8290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[30 * src_strd]; 8300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 8310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 8320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[k] = g_ai2_ihevc_trans_32[4][k] * pi2_src[4 * src_strd] 8340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[12][k] 8350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[12 * src_strd] 8360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[20][k] 8370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[20 * src_strd] 8380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[28][k] 8390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[28 * src_strd]; 8400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 8410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = g_ai2_ihevc_trans_32[8][0] * pi2_src[8 * src_strd] 8420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[24][0] 8430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[24 * src_strd]; 8440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = g_ai2_ihevc_trans_32[8][1] * pi2_src[8 * src_strd] 8450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[24][1] 8460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[24 * src_strd]; 8470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = g_ai2_ihevc_trans_32[0][0] * pi2_src[0] 8480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[16][0] 8490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[16 * src_strd]; 8500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = g_ai2_ihevc_trans_32[0][1] * pi2_src[0] 8510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[16][1] 8520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[16 * src_strd]; 8530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 8540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 8550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 8560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 8570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 8580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 8590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 8600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 8620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 8630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 8640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 8650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 8670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 8680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 8690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 8700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[k] = 8720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 8730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[k + 16] = 8740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 8750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 8760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 8770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 8780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp += trans_size; 8790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 8800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 8810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 8820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp = pi2_tmp_orig; 8830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 8840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 2nd stage */ 8850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_2; 8860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 8870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_rows_2nd_stage & 0xFFFFFFF0) == 0xFFFFFFF0) /* First 4 rows of output of 1st stage are non-zero */ 8880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 8900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 8920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 8930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_tmp[trans_size] 8950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 8960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size]; 8970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 8980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 8990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_tmp[2 * trans_size]; 9010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar// for(k = 0; k < 4; k++) 9030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[0] = 0; 9050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[1] = 0; 9060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[2] = 0; 9070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[3] = 0; 9080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = 0; 9100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = 0; 9110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = g_ai2_ihevc_trans_32[0][0] * pi2_tmp[0]; 9120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = g_ai2_ihevc_trans_32[0][1] * pi2_tmp[0]; 9130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 9140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 9150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 9160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 9170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 9180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 9190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 9200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 9220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 9230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 9250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 9270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 9280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 9300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 9320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 9330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 9340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k] = CLIP_U8((itrans_out + pu1_pred[k])); 9350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 9360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 9370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k + 16] = CLIP_U8((itrans_out + pu1_pred[k + 16])); 9380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 9400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 9410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 9420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else if((zero_rows_2nd_stage & 0xFFFFFF00) == 0xFFFFFF00) /* First 8 rows of output of 1st stage are non-zero */ 9450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 9470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 9490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 9500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_tmp[trans_size] 9520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 9530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size] 9540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[5][k] 9550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[5 * trans_size] 9560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[7][k] 9570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[7 * trans_size]; 9580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 9600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_tmp[2 * trans_size] 9620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[6][k] 9630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[6 * trans_size]; 9640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 9660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[k] = g_ai2_ihevc_trans_32[4][k] * pi2_tmp[4 * trans_size]; 9680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = 0; 9700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = 0; 9710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = g_ai2_ihevc_trans_32[0][0] * pi2_tmp[0]; 9720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = g_ai2_ihevc_trans_32[0][1] * pi2_tmp[0]; 9730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 9740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 9750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 9760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 9770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 9780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 9790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 9800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 9820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 9830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 9850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 9870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 9880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 9900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 9920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 9930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 9940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k] = CLIP_U8((itrans_out + pu1_pred[k])); 9950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 9960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 9970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k + 16] = CLIP_U8((itrans_out + pu1_pred[k + 16])); 9980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 10000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 10010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 10020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 10030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 10040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else /* All rows of output of 1st stage are non-zero */ 10050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 10060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 10070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 10080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 10090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 10100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 10110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_tmp[trans_size] 10120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 10130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size] 10140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[5][k] 10150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[5 * trans_size] 10160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[7][k] 10170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[7 * trans_size] 10180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[9][k] 10190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[9 * trans_size] 10200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[11][k] 10210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[11 * trans_size] 10220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[13][k] 10230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[13 * trans_size] 10240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[15][k] 10250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[15 * trans_size] 10260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[17][k] 10270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[17 * trans_size] 10280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[19][k] 10290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[19 * trans_size] 10300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[21][k] 10310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[21 * trans_size] 10320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[23][k] 10330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[23 * trans_size] 10340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[25][k] 10350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[25 * trans_size] 10360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[27][k] 10370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[27 * trans_size] 10380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[29][k] 10390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[29 * trans_size] 10400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[31][k] 10410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[31 * trans_size]; 10420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 10430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 10440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 10450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_tmp[2 * trans_size] 10460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[6][k] 10470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[6 * trans_size] 10480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[10][k] 10490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[10 * trans_size] 10500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[14][k] 10510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[14 * trans_size] 10520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[18][k] 10530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[18 * trans_size] 10540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[22][k] 10550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[22 * trans_size] 10560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[26][k] 10570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[26 * trans_size] 10580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[30][k] 10590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[30 * trans_size]; 10600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 10610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 10620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 10630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[k] = g_ai2_ihevc_trans_32[4][k] * pi2_tmp[4 * trans_size] 10640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[12][k] 10650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[12 * trans_size] 10660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[20][k] 10670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[20 * trans_size] 10680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[28][k] 10690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[28 * trans_size]; 10700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 10710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = 10720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[8][0] * pi2_tmp[8 * trans_size] 10730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[24][0] 10740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[24 10750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 10760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = 10770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[8][1] * pi2_tmp[8 * trans_size] 10780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[24][1] 10790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[24 10800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 10810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = 10820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[0][0] * pi2_tmp[0] 10830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[16][0] 10840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[16 10850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 10860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = 10870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_32[0][1] * pi2_tmp[0] 10880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[16][1] 10890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[16 10900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * trans_size]; 10910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 10920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 10930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 10940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 10950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 10960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 10970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 10980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 10990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 11000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 11010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 11020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 11030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 11040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 11050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 11060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 11070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 11080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 11090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 11100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 11110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> shift)); 11120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k] = CLIP_U8((itrans_out + pu1_pred[k])); 11130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 11140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> shift)); 11150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[k + 16] = CLIP_U8((itrans_out + pu1_pred[k + 16])); 11160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 11170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 11180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 11190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 11200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 11210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 11220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 11230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************END - IT_RECON_32x32****************************************/ 11240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /************************************************************************************************/ 11250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 11260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 11270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1128