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.c 220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Contains function definitions for single stage inverse transform 250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @author 270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 100470 280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par List of Functions: 300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * - ihevc_itrans_4x4_ttype1() 310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * - ihevc_itrans_4x4() 320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * - ihevc_itrans_8x8() 330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * - ihevc_itrans_16x16() 340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * - ihevc_itrans_32x32() 350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include <stdio.h> 420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include <string.h> 430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_typedefs.h" 440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_macros.h" 450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_platform_macros.h" 460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_defs.h" 470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_trans_tables.h" 480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_func_selector.h" 490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_trans_macros.h" 500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#define NON_OPTIMIZED 1 520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/** 540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * This function performs Single stage Inverse transform type 1 (DST) for 580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 4x4 input block 590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par Description: 610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Performs single stage 4x4 inverse transform type 1 by utilizing the 620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * symmetry of transformation matrix and reducing number of multiplications 630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * wherever possible but keeping the number of operations 640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * (addition,multiplication and shift)same 650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_src 670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input 4x4 coefficients 680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[out] pi2_dst 700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output 4x4 block 710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] src_strd 730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input stride 740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] dst_strd 760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output Stride 770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] i4_shift 790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output shift 800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_cols 820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero columns in pi2_src 830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @returns Void 850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_itrans_4x4_ttype1(WORD16 *pi2_src, 940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_dst, 950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 i4_shift, 980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols) 990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 1000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 i, c[4]; 1010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 1020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (i4_shift - 1); 1040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(i = 0; i < TRANS_SIZE_4; i++) 1060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 1080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 1090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_dst, 0, TRANS_SIZE_4 * sizeof(WORD16)); 1110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 1130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar // Intermediate Variables 1150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[0] = pi2_src[0] + pi2_src[2 * src_strd]; 1160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[1] = pi2_src[2 * src_strd] + pi2_src[3 * src_strd]; 1170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[2] = pi2_src[0] - pi2_src[3 * src_strd]; 1180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[3] = 74 * pi2_src[src_strd]; 1190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[0] = 1210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((29 * c[0] + 55 * c[1] + c[3] + add) >> i4_shift); 1220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[1] = 1230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((55 * c[2] - 29 * c[1] + c[3] + add) >> i4_shift); 1240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[2] = 1250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((74 * (pi2_src[0] - pi2_src[2 * src_strd] + pi2_src[3 * src_strd]) + add) >> i4_shift); 1260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[3] = 1270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((55 * c[0] + 29 * c[2] - c[3] + add) >> i4_shift); 1280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 1300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst += dst_strd; 1310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 1320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 1340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/** 1370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 1380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 1400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * This function performs Single stage Inverse transform for 4x4 input 1410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * block 1420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par Description: 1440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Performs single stage 4x4 inverse transform by utilizing the symmetry of 1450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * transformation matrix and reducing number of multiplications wherever 1460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * possible but keeping the number of operations(addition,multiplication and 1470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * shift) same 1480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_src 1500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input 4x4 coefficients 1510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[out] pi2_dst 1530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output 4x4 block 1540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] src_strd 1560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input stride 1570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] dst_strd 1590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output Stride 1600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] i4_shift 1620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output shift 1630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_cols 1650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero columns in pi2_src 1660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @returns Void 1680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 1700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 1710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 1730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 1740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#if NON_OPTIMIZED 1760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_itrans_4x4(WORD16 *pi2_src, 1770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_dst, 1780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 1790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 1800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 i4_shift, 1810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols) 1820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 1830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 j; 1840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 e[2], o[2]; 1850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 1860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (i4_shift - 1); 1880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < TRANS_SIZE_4; j++) 1900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 1920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 1930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_dst, 0, TRANS_SIZE_4 * sizeof(WORD16)); 1950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 1970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 2000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[0] = g_ai2_ihevc_trans_4[1][0] * pi2_src[src_strd] 2010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[3][0] * pi2_src[3 * src_strd]; 2020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[1] = g_ai2_ihevc_trans_4[1][1] * pi2_src[src_strd] 2030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[3][1] * pi2_src[3 * src_strd]; 2040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[0] = g_ai2_ihevc_trans_4[0][0] * pi2_src[0] 2050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[2][0] * pi2_src[2 * src_strd]; 2060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[1] = g_ai2_ihevc_trans_4[0][1] * pi2_src[0] 2070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[2][1] * pi2_src[2 * src_strd]; 2080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[0] = 2100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] + o[0] + add) >> i4_shift)); 2110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[1] = 2120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] + o[1] + add) >> i4_shift)); 2130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[2] = 2140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] - o[1] + add) >> i4_shift)); 2150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[3] = 2160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] - o[0] + add) >> i4_shift)); 2170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 2200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst += dst_strd; 2210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 2220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 2240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#else 2250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_itrans_4x4(WORD16 *pi2_src, 2260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_dst, 2270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 2280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 2290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 i4_shift, 2300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols) 2310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 2320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 j; 2330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 e[2], o[2]; 2340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 2350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (i4_shift - 1); 2370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /***************************************************************************/ 2390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Transform Matrix 4x4 */ 2400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 0 1 2 3 */ 2410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 0 { 64, 64, 64, 64}, */ 2420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 1 { 83, 36,-36,-83}, */ 2430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 2 { 64,-64,-64, 64}, */ 2440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 3 { 36,-83, 83,-36} */ 2450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /***************************************************************************/ 2460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < TRANS_SIZE_4; j++) 2480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 temp; 2500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 2520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 2530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_dst, 0, TRANS_SIZE_4 * sizeof(WORD16)); 2550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 2570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Common operation in o[0] and o[1] */ 2590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp = (pi2_src[src_strd] + pi2_src[3 * src_strd]) * 36; 2600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[0] = temp + 47 * pi2_src[src_strd]; 2620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[1] = temp - 119 * pi2_src[3 * src_strd]; 2630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[0] = (pi2_src[0] + pi2_src[2 * src_strd]) << 6; 2640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[1] = (pi2_src[0] - pi2_src[2 * src_strd]) << 6; 2650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[0] = 2670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] + o[0] + add) >> i4_shift)); 2680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[1] = 2690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] + o[1] + add) >> i4_shift)); 2700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[2] = 2710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] - o[1] + add) >> i4_shift)); 2720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[3] = 2730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] - o[0] + add) >> i4_shift)); 2740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 2760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst += dst_strd; 2770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 2780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 2800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#endif 2810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/** 2830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 2840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 2860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * This function performs Single stage Inverse transform for 8x8 input 2870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * block 2880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par Description: 2900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Performs single stage 8x8 inverse transform by utilizing the symmetry of 2910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * transformation matrix and reducing number of multiplications wherever 2920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * possible but keeping the number of operations(addition,multiplication and 2930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * shift) same 2940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_src 2960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input 8x8 coefficients 2970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[out] pi2_dst 2990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output 8x8 block 3000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] src_strd 3020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input stride 3030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] dst_strd 3050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output Stride 3060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] i4_shift 3080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output shift 3090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_cols 3110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero columns in pi2_src 3120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @returns Void 3140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 3160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 3170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 3190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 3200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#if NON_OPTIMIZED 3220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_itrans_8x8(WORD16 *pi2_src, 3230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_dst, 3240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 3250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 3260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 i4_shift, 3270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols) 3280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 3290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 j, k; 3300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 e[4], o[4]; 3310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 ee[2], eo[2]; 3320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 3330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (i4_shift - 1); 3350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < TRANS_SIZE_8; j++) 3370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 3390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 3400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_dst, 0, TRANS_SIZE_8 * sizeof(WORD16)); 3420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 3440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 3460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 3470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_8[1][k] * pi2_src[src_strd] 3490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_8[3][k] 3500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[3 * src_strd] 3510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_8[5][k] 3520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[5 * src_strd] 3530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_8[7][k] 3540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[7 * src_strd]; 3550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[0] = g_ai2_ihevc_trans_8[2][0] * pi2_src[2 * src_strd] 3580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_8[6][0] * pi2_src[6 * src_strd]; 3590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[1] = g_ai2_ihevc_trans_8[2][1] * pi2_src[2 * src_strd] 3600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_8[6][1] * pi2_src[6 * src_strd]; 3610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[0] = g_ai2_ihevc_trans_8[0][0] * pi2_src[0] 3620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_8[4][0] * pi2_src[4 * src_strd]; 3630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[1] = g_ai2_ihevc_trans_8[0][1] * pi2_src[0] 3640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_8[4][1] * pi2_src[4 * src_strd]; 3650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 3670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[0] = ee[0] + eo[0]; 3680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[3] = ee[0] - eo[0]; 3690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[1] = ee[1] + eo[1]; 3700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[2] = ee[1] - eo[1]; 3710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 3720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[k] = 3740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> i4_shift)); 3750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[k + 4] = 3760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[3 - k] - o[3 - k] + add) >> i4_shift)); 3770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 3800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst += dst_strd; 3810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 3820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 3840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#else 3860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_itrans_8x8(WORD16 *pi2_src, 3870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_dst, 3880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 3890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 3900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 i4_shift, 3910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols) 3920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 3930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Transform Matrix 8x8 */ 3940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 0 1 2 3 4 5 6 7 */ 3950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 0 - 64 64 64 64 64 64 64 64 */ 3960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 1 - 89 75 50 18 -18 -50 -75 -89 */ 3970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 2 - 83 36 -36 -83 -83 -36 36 83 */ 3980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 3 - 75 -18 -89 -50 50 89 18 -75 */ 3990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 4 - 64 -64 -64 64 64 -64 -64 64 */ 4000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 5 - 50 -89 18 75 -75 -18 89 -50 */ 4010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 6 - 36 -83 83 -36 -36 83 -83 36 */ 4020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 7 - 18 -50 75 -89 89 -75 50 -18 */ 4030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 0th and 4th row will have no multiplications */ 4050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 2nd and 6th row has only two coefff multiplies */ 4060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 1st, 3rd, 5th and 7th rows have o mirror symmetry */ 4070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 j, k; 4080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 temp1, temp2; 4090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 e[4], o[4]; 4100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 ee[2], eo[2]; 4110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 4120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (i4_shift - 1); 4140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < TRANS_SIZE_8; j++) 4160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 4180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 4190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_dst, 0, TRANS_SIZE_8 * sizeof(WORD16)); 4210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 4230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 4260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 4270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[0] = 89 *pi2_src[8] + 75 *pi2_src[3*8] + 50 *pi2_src[5*8] + 18 *pi2_src[7*8]; 4280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[1] = 75 *pi2_src[8] + -18 *pi2_src[3*8] + -89 *pi2_src[5*8] + -50 *pi2_src[7*8]; 4290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[2] = 50 *pi2_src[8] + -89 *pi2_src[3*8] + 18 *pi2_src[5*8] + 75 *pi2_src[7*8]; 4300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[3] = 18 *pi2_src[8] + -50 *pi2_src[3*8] + 75 *pi2_src[5*8] + -89 *pi2_src[7*8]; 4310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 4320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Optimization: 4 mul + 2 add ---> 3 mul + 3 add */ 4340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 4350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp1 = (pi2_src[8 ] + pi2_src[3*8]) * 75; 4360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp2 = (pi2_src[5*8] + pi2_src[7*8]) * 50; 4370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[0] = temp1 + 14 * pi2_src[8 ] + temp2 - 32 * pi2_src[7*8]; 4390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[1] = temp1 - 93 * pi2_src[3*8] - temp2 - 39 * pi2_src[5*8]; 4400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 4410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp1 = (pi2_src[src_strd] + pi2_src[3 * src_strd]) * 75; 4430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp2 = (pi2_src[5 * src_strd] + pi2_src[7 * src_strd]) * 50; 4440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[0] = temp1 + 14 * pi2_src[src_strd] + temp2 4460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar - (pi2_src[7 * src_strd] << 5); 4470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[1] = temp1 - 93 * pi2_src[3 * src_strd] - temp2 4480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar - 39 * pi2_src[5 * src_strd]; 4490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Optimization: 4 mul + 2 add ---> 3 mul + 3 add */ 4510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 4520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp1 = (pi2_src[8 ] - pi2_src[3*8]) * 50; 4530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp2 = (pi2_src[5*8] + pi2_src[7*8]) * 75; 4540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[2] = temp1 - 39 * pi2_src[3*8] + temp2 - 57 * pi2_src[5*8]; 4560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[3] = temp1 - 32 * pi2_src[8 ] + temp2 - 164 * pi2_src[7*8]; 4570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 4580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp1 = (pi2_src[src_strd] - pi2_src[3 * src_strd]) * 50; 4600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp2 = (pi2_src[5 * src_strd] + pi2_src[7 * src_strd]) * 75; 4610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[2] = temp1 - 39 * pi2_src[3 * src_strd] + temp2 4630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar - 57 * pi2_src[5 * src_strd]; 4640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[3] = temp1 - (pi2_src[src_strd] << 5) + temp2 4650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar - 164 * pi2_src[7 * src_strd]; 4660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 4680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[0] = 83 *pi2_src[ 2*8 ] + 36 *pi2_src[ 6*8 ]; 4690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[1] = 36 *pi2_src[ 2*8 ] + -83 *pi2_src[ 6*8 ]; 4700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[0] = 64 *pi2_src[ 0 ] + 64 *pi2_src[ 4*8 ]; 4710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[1] = 64 *pi2_src[ 0 ] + -64 *pi2_src[ 4*8 ]; 4720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 4730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Optimization: 4 mul + 2 add ---> 3 mul + 3 add */ 4750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp1 = (pi2_src[2 * src_strd] + pi2_src[6 * src_strd]) * 36; 4760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[0] = temp1 + 47 * pi2_src[2 * src_strd]; 4770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[1] = temp1 - 119 * pi2_src[6 * src_strd]; 4780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Optimization: 4 mul + 2 add ---> 2 i4_shift + 2 add */ 4800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[0] = (pi2_src[0] + pi2_src[4 * src_strd]) << 6; 4810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[1] = (pi2_src[0] - pi2_src[4 * src_strd]) << 6; 4820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[0] = ee[0] + eo[0]; 4840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[3] = ee[0] - eo[0]; 4850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[1] = ee[1] + eo[1]; 4860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[2] = ee[1] - eo[1]; 4870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 4890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[k] = 4910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> i4_shift)); 4920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[k + 4] = 4930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[3 - k] - o[3 - k] + add) >> i4_shift)); 4940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 4970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst += dst_strd; 4980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 4990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 5010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 5020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#endif 5030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 5040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 5050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/** 5060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 5070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 5080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 5090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * This function performs Single stage Inverse transform for 16x16 input 5100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * block 5110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 5120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par Description: 5130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Performs single stage 16x16 inverse transform by utilizing the symmetry 5140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * of transformation matrix and reducing number of multiplications wherever 5150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * possible but keeping the number of operations (addition,multiplication 5160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * and shift) same 5170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 5180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_src 5190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input 16x16 coefficients 5200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 5210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[out] pi2_dst 5220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output 16x16 block 5230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 5240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] src_strd 5250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input stride 5260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 5270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] dst_strd 5280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output Stride 5290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 5300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] i4_shift 5310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output shift 5320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 5330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_cols 5340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero columns in pi2_src 5350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 5360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @returns Void 5370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 5380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 5390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 5400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 5410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 5420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 5430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 5440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#if NON_OPTIMIZED 5450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_itrans_16x16(WORD16 *pi2_src, 5460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_dst, 5470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 5480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 5490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 i4_shift, 5500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols) 5510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 5520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 j, k; 5530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 e[8], o[8]; 5540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 ee[4], eo[4]; 5550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 eee[2], eeo[2]; 5560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 5570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 5580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (i4_shift - 1); 5590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 5600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < TRANS_SIZE_16; j++) 5610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 5630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 5640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_dst, 0, TRANS_SIZE_16 * sizeof(WORD16)); 5660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 5680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 5700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 5710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_16[1][k] * pi2_src[src_strd] 5730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[3][k] 5740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[3 * src_strd] 5750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[5][k] 5760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[5 * src_strd] 5770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[7][k] 5780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[7 * src_strd] 5790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[9][k] 5800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[9 * src_strd] 5810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[11][k] 5820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[11 * src_strd] 5830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[13][k] 5840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[13 * src_strd] 5850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[15][k] 5860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[15 * src_strd]; 5870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 5890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 5900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_16[2][k] * pi2_src[2 * src_strd] 5910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[6][k] 5920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[6 * src_strd] 5930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[10][k] 5940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[10 * src_strd] 5950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[14][k] 5960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[14 * src_strd]; 5970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 5980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[0] = g_ai2_ihevc_trans_16[4][0] * pi2_src[4 * src_strd] 5990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[12][0] 6000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[12 * src_strd]; 6010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = 6020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_16[0][0] * pi2_src[0] 6030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[8][0] 6040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[8 6050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * src_strd]; 6060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[1] = g_ai2_ihevc_trans_16[4][1] * pi2_src[4 * src_strd] 6070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[12][1] 6080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[12 * src_strd]; 6090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = 6100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_16[0][1] * pi2_src[0] 6110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_16[8][1] 6120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[8 6130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * src_strd]; 6140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 6150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 6160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 2; k++) 6170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 6190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 2] = eee[1 - k] - eeo[1 - k]; 6200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 6220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 6240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 4] = ee[3 - k] - eo[3 - k]; 6250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 6270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[k] = 6290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> i4_shift)); 6300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[k + 8] = 6310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[7 - k] - o[7 - k] + add) >> i4_shift)); 6320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 6350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst += dst_strd; 6360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 6370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 6390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#else 6400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_itrans_16x16(WORD16 *pi2_src, 6410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_dst, 6420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 6430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 6440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 i4_shift, 6450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols) 6460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 6470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 j, k; 6480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 e[8], o[8]; 6490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 ee[4], eo[4]; 6500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 eee[2], eeo[2]; 6510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 6520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 temp1, temp2; 6530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 6540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (i4_shift - 1); 6550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /***************************************************************************/ 6560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Transform Matrix 16x16 */ 6570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 */ 6580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 0 { 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64}, */ 6590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 1 { 90, 87, 80, 70, 57, 43, 25, 9, -9,-25,-43,-57,-70,-80,-87,-90}, */ 6600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 2 { 89, 75, 50, 18,-18,-50,-75,-89,-89,-75,-50,-18, 18, 50, 75, 89}, */ 6610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 3 { 87, 57, 9,-43,-80,-90,-70,-25, 25, 70, 90, 80, 43, -9,-57,-87}, */ 6620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 4 { 83, 36,-36,-83,-83,-36, 36, 83, 83, 36,-36,-83,-83,-36, 36, 83}, */ 6630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 5 { 80, 9,-70,-87,-25, 57, 90, 43,-43,-90,-57, 25, 87, 70, -9,-80}, */ 6640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 6 { 75,-18,-89,-50, 50, 89, 18,-75,-75, 18, 89, 50,-50,-89,-18, 75}, */ 6650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 7 { 70,-43,-87, 9, 90, 25,-80,-57, 57, 80,-25,-90, -9, 87, 43,-70}, */ 6660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 8 { 64,-64,-64, 64, 64,-64,-64, 64, 64,-64,-64, 64, 64,-64,-64, 64}, */ 6670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 9 { 57,-80,-25, 90, -9,-87, 43, 70,-70,-43, 87, 9,-90, 25, 80,-57}, */ 6680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 10 { 50,-89, 18, 75,-75,-18, 89,-50,-50, 89,-18,-75, 75, 18,-89, 50}, */ 6690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 11 { 43,-90, 57, 25,-87, 70, 9,-80, 80, -9,-70, 87,-25,-57, 90,-43}, */ 6700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 12 { 36,-83, 83,-36,-36, 83,-83, 36, 36,-83, 83,-36,-36, 83,-83, 36}, */ 6710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 13 { 25,-70, 90,-80, 43, 9,-57, 87,-87, 57, -9,-43, 80,-90, 70,-25}, */ 6720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 14 { 18,-50, 75,-89, 89,-75, 50,-18,-18, 50,-75, 89,-89, 75,-50, 18}, */ 6730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 15 { 9,-25, 43,-57, 70,-80, 87,-90, 90,-87, 80,-70, 57,-43, 25, -9} */ 6740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /***************************************************************************/ 6750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 6760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < TRANS_SIZE_16; j++) 6770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 6790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 6800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_dst, 0, TRANS_SIZE_16 * sizeof(WORD16)); 6820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 6830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 6840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 6860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 6870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* 6880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_16[ 1][k]*pi2_src[ src_strd ] + g_ai2_ihevc_trans_16[ 3][k]*pi2_src[ 3*src_strd ] + g_ai2_ihevc_trans_16[ 5][k]*pi2_src[ 5*src_strd ] + g_ai2_ihevc_trans_16[ 7][k]*pi2_src[ 7*src_strd ] + 6890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar g_ai2_ihevc_trans_16[ 9][k]*pi2_src[ 9*src_strd ] + g_ai2_ihevc_trans_16[11][k]*pi2_src[11*src_strd ] + g_ai2_ihevc_trans_16[13][k]*pi2_src[13*src_strd ] + g_ai2_ihevc_trans_16[15][k]*pi2_src[15*src_strd ]; 6900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 6910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 6920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[0] = 90 * pi2_src[src_strd] + 87 * pi2_src[3 * src_strd] 6930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 80 * pi2_src[5 * src_strd] 6940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 70 * pi2_src[7 * src_strd] 6950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 57 * pi2_src[9 * src_strd] 6960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 43 * pi2_src[11 * src_strd] 6970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 25 * pi2_src[13 * src_strd] 6980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 9 * pi2_src[15 * src_strd]; 6990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[1] = 87 * pi2_src[src_strd] + 57 * pi2_src[3 * src_strd] 7010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 9 * pi2_src[5 * src_strd] 7020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -43 * pi2_src[7 * src_strd] 7030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -80 * pi2_src[9 * src_strd] 7040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -90 * pi2_src[11 * src_strd] 7050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -70 * pi2_src[13 * src_strd] 7060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -25 * pi2_src[15 * src_strd]; 7070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[2] = 80 * pi2_src[src_strd] + 9 * pi2_src[3 * src_strd] 7090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -70 * pi2_src[5 * src_strd] 7100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -87 * pi2_src[7 * src_strd] 7110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -25 * pi2_src[9 * src_strd] 7120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 57 * pi2_src[11 * src_strd] 7130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 90 * pi2_src[13 * src_strd] 7140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 43 * pi2_src[15 * src_strd]; 7150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[3] = 70 * pi2_src[src_strd] + -43 * pi2_src[3 * src_strd] 7170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -87 * pi2_src[5 * src_strd] 7180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 9 * pi2_src[7 * src_strd] 7190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 90 * pi2_src[9 * src_strd] 7200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 25 * pi2_src[11 * src_strd] 7210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -80 * pi2_src[13 * src_strd] 7220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -57 * pi2_src[15 * src_strd]; 7230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[4] = 57 * pi2_src[src_strd] + -80 * pi2_src[3 * src_strd] 7250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -25 * pi2_src[5 * src_strd] 7260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 90 * pi2_src[7 * src_strd] 7270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -9 * pi2_src[9 * src_strd] 7280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -87 * pi2_src[11 * src_strd] 7290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 43 * pi2_src[13 * src_strd] 7300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 70 * pi2_src[15 * src_strd]; 7310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[5] = 43 * pi2_src[src_strd] + -90 * pi2_src[3 * src_strd] 7330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 57 * pi2_src[5 * src_strd] 7340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 25 * pi2_src[7 * src_strd] 7350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -87 * pi2_src[9 * src_strd] 7360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 70 * pi2_src[11 * src_strd] 7370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 9 * pi2_src[13 * src_strd] 7380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -80 * pi2_src[15 * src_strd]; 7390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[6] = 25 * pi2_src[src_strd] + -70 * pi2_src[3 * src_strd] 7410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 90 * pi2_src[5 * src_strd] 7420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -80 * pi2_src[7 * src_strd] 7430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 43 * pi2_src[9 * src_strd] 7440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 9 * pi2_src[11 * src_strd] 7450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -57 * pi2_src[13 * src_strd] 7460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 87 * pi2_src[15 * src_strd]; 7470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[7] = 9 * pi2_src[src_strd] + -25 * pi2_src[3 * src_strd] 7490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 43 * pi2_src[5 * src_strd] 7500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -57 * pi2_src[7 * src_strd] 7510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 70 * pi2_src[9 * src_strd] 7520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -80 * pi2_src[11 * src_strd] 7530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + 87 * pi2_src[13 * src_strd] 7540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + -90 * pi2_src[15 * src_strd]; 7550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp1 = (pi2_src[2 * src_strd] + pi2_src[6 * src_strd]) * 75; 7580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp2 = (pi2_src[10 * src_strd] + pi2_src[14 * src_strd]) * 50; 7590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[0] = temp1 + 14 * pi2_src[2 * src_strd] + temp2 7600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar - (pi2_src[14 * src_strd] << 5); 7610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[1] = temp1 - 93 * pi2_src[6 * src_strd] - temp2 7620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar - 39 * pi2_src[10 * src_strd]; 7630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp1 = (pi2_src[2 * src_strd] - pi2_src[6 * src_strd]) * 50; 7650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp2 = (pi2_src[10 * src_strd] + pi2_src[14 * src_strd]) * 75; 7660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[2] = temp1 - 39 * pi2_src[6 * src_strd] + temp2 7670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar - 57 * pi2_src[10 * src_strd]; 7680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[3] = temp1 - (pi2_src[2 * src_strd] << 5) + temp2 7690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar - 164 * pi2_src[14 * src_strd]; 7700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar temp1 = (pi2_src[4 * src_strd] + pi2_src[12 * src_strd]) * 36; 7730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[0] = temp1 + 47 * pi2_src[4 * src_strd]; 7740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[1] = temp1 - 119 * pi2_src[12 * src_strd]; 7750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = (pi2_src[0] + pi2_src[8 * src_strd]) << 6; 7770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = (pi2_src[0] - pi2_src[8 * src_strd]) << 6; 7780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 7790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 7800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 2; k++) 7810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 7830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 2] = eee[1 - k] - eeo[1 - k]; 7840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 7860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 7880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 4] = ee[3 - k] - eo[3 - k]; 7890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 7910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 7920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[k] = 7930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> i4_shift)); 7940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[k + 8] = 7950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[7 - k] - o[7 - k] + add) >> i4_shift)); 7960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 7980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 7990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst += dst_strd; 8000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 8010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 8020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 8030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#endif 8040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 8050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/** 8060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 8070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 8080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 8090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * This function performs Single stage Inverse transform for 32x32 input 8100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * block 8110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 8120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par Description: 8130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Performs single stage 32x32 inverse transform by utilizing the symmetry 8140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * of transformation matrix and reducing number of multiplications wherever 8150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * possible but keeping the number of operations (addition,multiplication 8160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * and shift) same 8170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 8180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_src 8190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input 32x32 coefficients 8200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 8210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[out] pi2_dst 8220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output 32x32 block 8230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 8240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] src_strd 8250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input stride 8260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 8270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] dst_strd 8280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output Stride 8290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 8300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] i4_shift 8310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output shift 8320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 8330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_cols 8340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero columns in pi2_src 8350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 8360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @returns Void 8370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 8380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 8390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 8400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 8410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 8420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 8430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 8440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 8450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_itrans_32x32(WORD16 *pi2_src, 8460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_dst, 8470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 8480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 8490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 i4_shift, 8500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols) 8510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 8520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 j, k; 8530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 e[16], o[16]; 8540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 ee[8], eo[8]; 8550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 eee[4], eeo[4]; 8560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 eeee[2], eeeo[2]; 8570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 8580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 8590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (i4_shift - 1); 8600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 8610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < TRANS_SIZE_32; j++) 8620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 8640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 8650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_dst, 0, TRANS_SIZE_32 * sizeof(WORD16)); 8670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 8680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 8690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 8710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 8720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 8730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[k] = g_ai2_ihevc_trans_32[1][k] * pi2_src[src_strd] 8740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[3][k] 8750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[3 * src_strd] 8760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[5][k] 8770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[5 * src_strd] 8780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[7][k] 8790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[7 * src_strd] 8800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[9][k] 8810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[9 * src_strd] 8820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[11][k] 8830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[11 * src_strd] 8840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[13][k] 8850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[13 * src_strd] 8860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[15][k] 8870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[15 * src_strd] 8880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[17][k] 8890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[17 * src_strd] 8900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[19][k] 8910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[19 * src_strd] 8920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[21][k] 8930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[21 * src_strd] 8940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[23][k] 8950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[23 * src_strd] 8960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[25][k] 8970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[25 * src_strd] 8980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[27][k] 8990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[27 * src_strd] 9000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[29][k] 9010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[29 * src_strd] 9020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[31][k] 9030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[31 * src_strd]; 9040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 9060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eo[k] = g_ai2_ihevc_trans_32[2][k] * pi2_src[2 * src_strd] 9080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[6][k] 9090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[6 * src_strd] 9100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[10][k] 9110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[10 * src_strd] 9120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[14][k] 9130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[14 * src_strd] 9140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[18][k] 9150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[18 * src_strd] 9160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[22][k] 9170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[22 * src_strd] 9180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[26][k] 9190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[26 * src_strd] 9200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[30][k] 9210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[30 * src_strd]; 9220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 9240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeo[k] = g_ai2_ihevc_trans_32[4][k] * pi2_src[4 * src_strd] 9260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[12][k] 9270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[12 * src_strd] 9280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[20][k] 9290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[20 * src_strd] 9300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[28][k] 9310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[28 * src_strd]; 9320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[0] = g_ai2_ihevc_trans_32[8][0] * pi2_src[8 * src_strd] 9340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[24][0] 9350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[24 * src_strd]; 9360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeeo[1] = g_ai2_ihevc_trans_32[8][1] * pi2_src[8 * src_strd] 9370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[24][1] 9380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[24 * src_strd]; 9390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[0] = g_ai2_ihevc_trans_32[0][0] * pi2_src[0] 9400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[16][0] 9410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[16 * src_strd]; 9420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eeee[1] = g_ai2_ihevc_trans_32[0][1] * pi2_src[0] 9430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_32[16][1] 9440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_src[16 * src_strd]; 9450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 9460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Combining e and o terms at each hierarchy levels to calculate the final spatial domain vector */ 9470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[0] = eeee[0] + eeeo[0]; 9480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[3] = eeee[0] - eeeo[0]; 9490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[1] = eeee[1] + eeeo[1]; 9500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar eee[2] = eeee[1] - eeeo[1]; 9510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 4; k++) 9520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k] = eee[k] + eeo[k]; 9540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ee[k + 4] = eee[3 - k] - eeo[3 - k]; 9550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 8; k++) 9570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k] = ee[k] + eo[k]; 9590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[k + 8] = ee[7 - k] - eo[7 - k]; 9600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(k = 0; k < 16; k++) 9620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 9630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[k] = 9640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[k] + o[k] + add) >> i4_shift)); 9650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst[k + 16] = 9660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[15 - k] - o[15 - k] + add) >> i4_shift)); 9670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 9700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dst += dst_strd; 9710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 9720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 9730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 9740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 975