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_chroma_iquant_itrans_recon.c 220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Contains function definitions for inverse quantization, inverse 250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * transform and reconstruction of chroma interleaved data. 260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @author 280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 100470 290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par List of Functions: 310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * - ihevc_chroma_iquant_itrans_recon_4x4() 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_chroma_iquant_itrans_recon.h" 460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_func_selector.h" 470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_trans_macros.h" 480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/* All the functions work one component(U or V) of interleaved data depending upon pointers passed to it */ 500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/* Data visualization */ 510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/* U V U V U V U V */ 520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/* U V U V U V U V */ 530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/* U V U V U V U V */ 540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/* U V U V U V U V */ 550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/* If the pointer points to first byte of above stream (U) , functions will operate on U component */ 560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/* If the pointer points to second byte of above stream (V) , functions will operate on V component */ 570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/** 600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * This function performs inverse quantization, inverse transform and 640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * reconstruction for 4x4 input block 650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par Description: 670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Performs inverse quantization , inverse transform and adds the 680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * prediction data and clips output to 8 bit 690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_src 710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input 4x4 coefficients 720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_tmp 740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Temporary 4x4 buffer for storing inverse transform 750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1st stage output 760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pu1_pred 780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Prediction 4x4 block 790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_dequant_coeff 810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Dequant Coeffs 820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[out] pu1_dst 840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output 4x4 block 850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] qp_div 870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Quantization parameter / 6 880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] qp_rem 900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Quantization parameter % 6 910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] src_strd 930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input stride 940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pred_strd 960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Prediction stride 970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] dst_strd 990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output Stride 1000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_cols 1020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero columns in pi2_src 1030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_rows 1050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero Rows in pi2_src 1060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @returns Void 1080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 1100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 1110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 1130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 1140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_chroma_iquant_itrans_recon_4x4(WORD16 *pi2_src, 1170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_tmp, 1180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar UWORD8 *pu1_pred, 1190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_dequant_coeff, 1200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar UWORD8 *pu1_dst, 1210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 qp_div, /* qpscaled / 6 */ 1220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 qp_rem, /* qpscaled % 6 */ 1230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 1240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 pred_strd, 1250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 1260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols, 1270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_rows) 1280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 1290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar UNUSED(zero_rows); 1300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform */ 1320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 j; 1340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 e[2], o[2]; 1350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 1360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 shift; 1370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_tmp_orig; 1380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 shift_iq; 1390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 trans_size; 1400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Quantization constants */ 1410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 log2_trans_size, bit_depth; 1430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar log2_trans_size = 2; 1450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar bit_depth = 8 + 0; 1460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq = bit_depth + log2_trans_size - 5; 1470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar trans_size = TRANS_SIZE_4; 1500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp_orig = pi2_tmp; 1510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 1st stage */ 1530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_1; 1540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 1550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 1570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 1590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 1600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_tmp, 0, trans_size * sizeof(WORD16)); 1620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 1640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 iq_tmp_1, iq_tmp_2; 1660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 1670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_1, 1680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[1 * src_strd], 1690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[1 * trans_size] * g_ihevc_iquant_scales[qp_rem], 1700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 1710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_2, 1720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[3 * src_strd], 1730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[3 * trans_size] * g_ihevc_iquant_scales[qp_rem], 1740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 1750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[0] = g_ai2_ihevc_trans_4[1][0] * iq_tmp_1 1770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[3][0] * iq_tmp_2; 1780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[1] = g_ai2_ihevc_trans_4[1][1] * iq_tmp_1 1790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[3][1] * iq_tmp_2; 1800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_1, 1820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[0 * src_strd], 1830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[0 * trans_size] * g_ihevc_iquant_scales[qp_rem], 1840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 1850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_2, 1860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[2 * src_strd], 1870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[2 * trans_size] * g_ihevc_iquant_scales[qp_rem], 1880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 1890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[0] = g_ai2_ihevc_trans_4[0][0] * iq_tmp_1 1910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[2][0] * iq_tmp_2; 1920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[1] = g_ai2_ihevc_trans_4[0][1] * iq_tmp_1 1930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[2][1] * iq_tmp_2; 1940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[0] = 1960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] + o[0] + add) >> shift)); 1970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[1] = 1980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] + o[1] + add) >> shift)); 1990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[2] = 2000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] - o[1] + add) >> shift)); 2010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[3] = 2020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] - o[0] + add) >> shift)); 2030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 2050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff++; 2060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp += trans_size; 2070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 2080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp = pi2_tmp_orig; 2110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 2nd stage */ 2130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_2; 2140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 2150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 2170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 2190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 2210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[0] = g_ai2_ihevc_trans_4[1][0] * pi2_tmp[trans_size] 2220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[3][0] 2230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size]; 2240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[1] = g_ai2_ihevc_trans_4[1][1] * pi2_tmp[trans_size] 2250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[3][1] 2260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size]; 2270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[0] = g_ai2_ihevc_trans_4[0][0] * pi2_tmp[0] 2280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[2][0] 2290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[2 * trans_size]; 2300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[1] = g_ai2_ihevc_trans_4[0][1] * pi2_tmp[0] 2310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[2][1] 2320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[2 * trans_size]; 2330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 2350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] + o[0] + add) >> shift)); 2360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[0 * 2] = CLIP_U8((itrans_out + pu1_pred[0 * 2])); 2370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 2390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] + o[1] + add) >> shift)); 2400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[1 * 2] = CLIP_U8((itrans_out + pu1_pred[1 * 2])); 2410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 2430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] - o[1] + add) >> shift)); 2440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[2 * 2] = CLIP_U8((itrans_out + pu1_pred[2 * 2])); 2450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 2470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] - o[0] + add) >> shift)); 2480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[3 * 2] = CLIP_U8((itrans_out + pu1_pred[3 * 2])); 2490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 2510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 2520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 2530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 257