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_iquant_itrans_recon.c 220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Contains function definitions for inverse quantization, inverse 250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * transform and reconstruction 260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @author 280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 100470 290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par List of Functions: 310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * - ihevc_iquant_itrans_recon_4x4_ttype1() 320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * - ihevc_iquant_itrans_recon_4x4() 330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include <stdio.h> 400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include <string.h> 410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_typedefs.h" 420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_macros.h" 430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_platform_macros.h" 440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_defs.h" 450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_trans_tables.h" 460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_iquant_itrans_recon.h" 470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_func_selector.h" 480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar#include "ihevc_trans_macros.h" 490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/* All the functions here are replicated from ihevc_itrans.c and modified to */ 510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/* include reconstruction */ 520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/** 540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * This function performs inverse quantization, inverse transform 580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * type1(DST) and reconstruction for 4x4 input block 590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par Description: 610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Performs inverse quantization , inverse transform type 1 and adds 620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * prediction data and clips output to 8 bit 630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_src 650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input 4x4 coefficients 660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_tmp 680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Temporary 4x4 buffer for storing inverse 690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * transform 1st stage output 700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pu1_pred 720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Prediction 4x4 block 730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_dequant_coeff 750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Dequant Coeffs 760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[out] pu1_dst 780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output 4x4 block 790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] qp_div 810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Quantization parameter / 6 820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] qp_rem 840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Quantization parameter % 6 850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] src_strd 870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input stride 880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pred_strd 900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Prediction stride 910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] dst_strd 930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output Stride 940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_cols 960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero columns in pi2_src 970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_rows 990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero Rows in pi2_src 1000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @returns Void 1020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 1040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 1050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 1060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 1070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 1080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_iquant_itrans_recon_4x4_ttype1(WORD16 *pi2_src, 1100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_tmp, 1110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar UWORD8 *pu1_pred, 1120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_dequant_coeff, 1130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar UWORD8 *pu1_dst, 1140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 qp_div, /* qpscaled / 6 */ 1150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 qp_rem, /* qpscaled % 6 */ 1160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 1170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 pred_strd, 1180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 1190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols, 1200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_rows) 1210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 1220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar UNUSED(zero_rows); 1230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Quant and Inverse Transform and Reconstruction */ 1240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 i, c[4]; 1260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 1270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 shift; 1280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_tmp_orig; 1290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 shift_iq; 1300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 trans_size; 1310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Quantization constants */ 1320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 log2_trans_size, bit_depth; 1340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar log2_trans_size = 2; 1360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar bit_depth = 8 + 0; 1370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq = bit_depth + log2_trans_size - 5; 1380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar trans_size = TRANS_SIZE_4; 1410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp_orig = pi2_tmp; 1420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 1st stage */ 1440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_1; 1450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 1460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(i = 0; i < trans_size; i++) 1480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 1500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 1510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_tmp, 0, trans_size * sizeof(WORD16)); 1530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 1540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 1550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 1560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 iq_tmp_1, iq_tmp_2, iq_tmp_3; 1570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar // Intermediate Variables 1580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_1, 1590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[0 * src_strd], 1600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[0 * trans_size] * g_ihevc_iquant_scales[qp_rem], 1610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 1620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_2, 1630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[2 * src_strd], 1640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[2 * trans_size] * g_ihevc_iquant_scales[qp_rem], 1650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 1660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[0] = iq_tmp_1 + iq_tmp_2; 1670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_1, 1690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[2 * src_strd], 1700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[2 * trans_size] * g_ihevc_iquant_scales[qp_rem], 1710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 1720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_2, 1730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[3 * src_strd], 1740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[3 * trans_size] * g_ihevc_iquant_scales[qp_rem], 1750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 1760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[1] = iq_tmp_1 + iq_tmp_2; 1770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_1, 1790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[0 * src_strd], 1800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[0 * trans_size] * g_ihevc_iquant_scales[qp_rem], 1810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 1820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_2, 1830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[3 * src_strd], 1840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[3 * trans_size] * g_ihevc_iquant_scales[qp_rem], 1850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 1860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[2] = iq_tmp_1 - iq_tmp_2; 1870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_1, 1890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[1 * src_strd], 1900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[1 * trans_size] * g_ihevc_iquant_scales[qp_rem], 1910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 1920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[3] = 74 * iq_tmp_1; 1930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[0] = 1950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((29 * c[0] + 55 * c[1] + c[3] + add) >> shift); 1960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[1] = 1970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((55 * c[2] - 29 * c[1] + c[3] + add) >> shift); 1980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_1, 2000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[0 * src_strd], 2010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[0 * trans_size] * g_ihevc_iquant_scales[qp_rem], 2020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 2030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_2, 2040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[2 * src_strd], 2050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[2 * trans_size] * g_ihevc_iquant_scales[qp_rem], 2060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 2070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_3, 2080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[3 * src_strd], 2090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[3 * trans_size] * g_ihevc_iquant_scales[qp_rem], 2100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 2110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[2] = 2130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((74 * (iq_tmp_1 - iq_tmp_2 + iq_tmp_3) + add) >> shift); 2140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[3] = 2150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((55 * c[0] + 29 * c[2] - c[3] + add) >> shift); 2160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 2180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff++; 2190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp += trans_size; 2200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 2210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp = pi2_tmp_orig; 2240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 2nd stage */ 2260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_2; 2270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 2280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(i = 0; i < trans_size; i++) 2300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 2310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 2320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar // Intermediate Variables 2340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[0] = pi2_tmp[0] + pi2_tmp[2 * trans_size]; 2350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[1] = pi2_tmp[2 * trans_size] + pi2_tmp[3 * trans_size]; 2360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[2] = pi2_tmp[0] - pi2_tmp[3 * trans_size]; 2370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar c[3] = 74 * pi2_tmp[trans_size]; 2380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 2400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((29 * c[0] + 55 * c[1] + c[3] + add) >> shift); 2410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[0] = CLIP_U8((itrans_out + pu1_pred[0])); 2420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 2440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((55 * c[2] - 29 * c[1] + c[3] + add) >> shift); 2450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[1] = CLIP_U8((itrans_out + pu1_pred[1])); 2460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 2480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((74 * (pi2_tmp[0] - pi2_tmp[2 * trans_size] + pi2_tmp[3 * trans_size]) + add) >> shift); 2490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[2] = CLIP_U8((itrans_out + pu1_pred[2])); 2500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 2520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16((55 * c[0] + 29 * c[2] - c[3] + add) >> shift); 2530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[3] = CLIP_U8((itrans_out + pu1_pred[3])); 2540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 2550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 2560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 2570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 2590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 2600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar/** 2620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 2630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @brief 2650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * This function performs inverse quantization, inverse transform and 2660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * reconstruction for 4x4 input block 2670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @par Description: 2690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Performs inverse quantization , inverse transform and adds the 2700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * prediction data and clips output to 8 bit 2710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_src 2730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input 4x4 coefficients 2740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_tmp 2760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Temporary 4x4 buffer for storing inverse 2770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * transform 1st stage output 2780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pu1_pred 2800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Prediction 4x4 block 2810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pi2_dequant_coeff 2830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Dequant Coeffs 2840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[out] pu1_dst 2860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output 4x4 block 2870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] qp_div 2890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Quantization parameter / 6 2900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] qp_rem 2920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Quantization parameter % 6 2930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] src_strd 2950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Input stride 2960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 2970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] pred_strd 2980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Prediction stride 2990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] dst_strd 3010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Output Stride 3020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_cols 3040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero columns in pi2_src 3050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @param[in] zero_rows 3070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * Zero Rows in pi2_src 3080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @returns Void 3100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * @remarks 3120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * None 3130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * 3140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ******************************************************************************* 3150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar */ 3160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarvoid ihevc_iquant_itrans_recon_4x4(WORD16 *pi2_src, 3180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_tmp, 3190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar UWORD8 *pu1_pred, 3200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_dequant_coeff, 3210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar UWORD8 *pu1_dst, 3220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 qp_div, /* qpscaled / 6 */ 3230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 qp_rem, /* qpscaled % 6 */ 3240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 src_strd, 3250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 pred_strd, 3260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 dst_strd, 3270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_cols, 3280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 zero_rows) 3290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar{ 3300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar UNUSED(zero_rows); 3310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform */ 3320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 j; 3340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 e[2], o[2]; 3350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 add; 3360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 shift; 3370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD16 *pi2_tmp_orig; 3380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 shift_iq; 3390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 trans_size; 3400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Quantization constants */ 3410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 log2_trans_size, bit_depth; 3430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar log2_trans_size = 2; 3450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar bit_depth = 8 + 0; 3460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq = bit_depth + log2_trans_size - 5; 3470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar trans_size = TRANS_SIZE_4; 3500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp_orig = pi2_tmp; 3510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 1st stage */ 3530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_1; 3540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 3550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 3570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Checking for Zero Cols */ 3590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar if((zero_cols & 1) == 1) 3600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar memset(pi2_tmp, 0, trans_size * sizeof(WORD16)); 3620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 3630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar else 3640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 3650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 iq_tmp_1, iq_tmp_2; 3660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 3670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_1, 3680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[1 * src_strd], 3690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[1 * trans_size] * g_ihevc_iquant_scales[qp_rem], 3700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 3710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_2, 3720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[3 * src_strd], 3730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[3 * trans_size] * g_ihevc_iquant_scales[qp_rem], 3740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 3750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[0] = g_ai2_ihevc_trans_4[1][0] * iq_tmp_1 3770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[3][0] * iq_tmp_2; 3780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[1] = g_ai2_ihevc_trans_4[1][1] * iq_tmp_1 3790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[3][1] * iq_tmp_2; 3800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_1, 3820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[0 * src_strd], 3830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[0 * trans_size] * g_ihevc_iquant_scales[qp_rem], 3840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 3850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar IQUANT_4x4(iq_tmp_2, 3860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src[2 * src_strd], 3870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff[2 * trans_size] * g_ihevc_iquant_scales[qp_rem], 3880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift_iq, qp_div); 3890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[0] = g_ai2_ihevc_trans_4[0][0] * iq_tmp_1 3910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[2][0] * iq_tmp_2; 3920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[1] = g_ai2_ihevc_trans_4[0][1] * iq_tmp_1 3930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[2][1] * iq_tmp_2; 3940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 3950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[0] = 3960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] + o[0] + add) >> shift)); 3970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[1] = 3980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] + o[1] + add) >> shift)); 3990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[2] = 4000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] - o[1] + add) >> shift)); 4010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp[3] = 4020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] - o[0] + add) >> shift)); 4030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_src++; 4050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_dequant_coeff++; 4060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp += trans_size; 4070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar zero_cols = zero_cols >> 1; 4080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp = pi2_tmp_orig; 4110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Inverse Transform 2nd stage */ 4130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar shift = IT_SHIFT_STAGE_2; 4140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add = 1 << (shift - 1); 4150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar for(j = 0; j < trans_size; j++) 4170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar { 4180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar WORD32 itrans_out; 4190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */ 4210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[0] = g_ai2_ihevc_trans_4[1][0] * pi2_tmp[trans_size] 4220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[3][0] 4230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size]; 4240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar o[1] = g_ai2_ihevc_trans_4[1][1] * pi2_tmp[trans_size] 4250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[3][1] 4260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[3 * trans_size]; 4270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[0] = g_ai2_ihevc_trans_4[0][0] * pi2_tmp[0] 4280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[2][0] 4290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[2 * trans_size]; 4300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar e[1] = g_ai2_ihevc_trans_4[0][1] * pi2_tmp[0] 4310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar + g_ai2_ihevc_trans_4[2][1] 4320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar * pi2_tmp[2 * trans_size]; 4330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 4350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] + o[0] + add) >> shift)); 4360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[0] = CLIP_U8((itrans_out + pu1_pred[0])); 4370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 4390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] + o[1] + add) >> shift)); 4400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[1] = CLIP_U8((itrans_out + pu1_pred[1])); 4410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 4430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[1] - o[1] + add) >> shift)); 4440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[2] = CLIP_U8((itrans_out + pu1_pred[2])); 4450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar itrans_out = 4470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar CLIP_S16(((e[0] - o[0] + add) >> shift)); 4480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst[3] = CLIP_U8((itrans_out + pu1_pred[3])); 4490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pi2_tmp++; 4510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_pred += pred_strd; 4520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar pu1_dst += dst_strd; 4530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 4540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar } 4560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar} 457