1*c83a76b0SSuyog Pawar /****************************************************************************** 2*c83a76b0SSuyog Pawar * 3*c83a76b0SSuyog Pawar * Copyright (C) 2018 The Android Open Source Project 4*c83a76b0SSuyog Pawar * 5*c83a76b0SSuyog Pawar * Licensed under the Apache License, Version 2.0 (the "License"); 6*c83a76b0SSuyog Pawar * you may not use this file except in compliance with the License. 7*c83a76b0SSuyog Pawar * You may obtain a copy of the License at: 8*c83a76b0SSuyog Pawar * 9*c83a76b0SSuyog Pawar * http://www.apache.org/licenses/LICENSE-2.0 10*c83a76b0SSuyog Pawar * 11*c83a76b0SSuyog Pawar * Unless required by applicable law or agreed to in writing, software 12*c83a76b0SSuyog Pawar * distributed under the License is distributed on an "AS IS" BASIS, 13*c83a76b0SSuyog Pawar * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14*c83a76b0SSuyog Pawar * See the License for the specific language governing permissions and 15*c83a76b0SSuyog Pawar * limitations under the License. 16*c83a76b0SSuyog Pawar * 17*c83a76b0SSuyog Pawar ***************************************************************************** 18*c83a76b0SSuyog Pawar * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19*c83a76b0SSuyog Pawar */ 20*c83a76b0SSuyog Pawar /*! 21*c83a76b0SSuyog Pawar ****************************************************************************** 22*c83a76b0SSuyog Pawar * \file common_rom.h 23*c83a76b0SSuyog Pawar * 24*c83a76b0SSuyog Pawar * \brief 25*c83a76b0SSuyog Pawar * This file contain square root table declarations 26*c83a76b0SSuyog Pawar * 27*c83a76b0SSuyog Pawar * \date 28*c83a76b0SSuyog Pawar * 29*c83a76b0SSuyog Pawar * \author 30*c83a76b0SSuyog Pawar * ittiam 31*c83a76b0SSuyog Pawar * 32*c83a76b0SSuyog Pawar ****************************************************************************** 33*c83a76b0SSuyog Pawar */ 34*c83a76b0SSuyog Pawar #ifndef SQRT_TAB_H 35*c83a76b0SSuyog Pawar #define SQRT_TAB_H 36*c83a76b0SSuyog Pawar 37*c83a76b0SSuyog Pawar /*****************************************************************************/ 38*c83a76b0SSuyog Pawar /* Constant Macros */ 39*c83a76b0SSuyog Pawar /*****************************************************************************/ 40*c83a76b0SSuyog Pawar 41*c83a76b0SSuyog Pawar #define INV_SQRT_2_Q31 1518500250 /* 1/sqrt(2) in Q31 */ 42*c83a76b0SSuyog Pawar #define INV_SQRT_2_Q15 23170 43*c83a76b0SSuyog Pawar 44*c83a76b0SSuyog Pawar #define Q_SQRT_TAB 15 45*c83a76b0SSuyog Pawar 46*c83a76b0SSuyog Pawar extern const WORD32 gi4_sqrt_tab[513]; /*sqrt_tab in Q15*/ 47*c83a76b0SSuyog Pawar 48*c83a76b0SSuyog Pawar #endif 49