14f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* ------------------------------------------------------------------ 24f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Copyright (C) 1998-2009 PacketVideo 34f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 44f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 54f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * you may not use this file except in compliance with the License. 64f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * You may obtain a copy of the License at 74f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 84f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 94f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Unless required by applicable law or agreed to in writing, software 114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * express or implied. 144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * See the License for the specific language governing permissions 154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * and limitations under the License. 164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * ------------------------------------------------------------------- 174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/**************************************************************************************** 194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas HuberPortions of this file are derived from the following 3GPP standard: 204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3GPP TS 26.073 224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Available from http://www.3gpp.org 244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas HuberPermission to distribute, modify and use this file under the standard license 274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberterms listed above has been obtained from the copyright holder. 284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber****************************************************************************************/ 294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Filename: /audio/gsm_amr/c/include/a_refl.h 354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Date: 08/11/2000 374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REVISION HISTORY 404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Moved _cplusplus #ifdef after Include section. 424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INCLUDE DESCRIPTION 474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber File : a_refl.h 494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Purpose : Convert from direct form coefficients to 504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber reflection coefficients 514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifndef A_REFL_H 564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define A_REFL_H 574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define a_refl_h "$Id $" 584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; INCLUDES 614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "typedef.h" 634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*--------------------------------------------------------------------------*/ 654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberextern "C" 674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; MACROS 724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Define module specific macros here 734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; DEFINES 774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Include all pre-processor statements here. 784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; EXTERNAL VARIABLES REFERENCES 824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Declare variables used in this module but defined elsewhere 834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; SIMPLE TYPEDEF'S 874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; ENUMERATED TYPEDEF'S 914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; STRUCTURES TYPEDEF'S 954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; GLOBAL FUNCTION DEFINITIONS 994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Function Prototype declaration 1004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 1024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * FUNCTION: A_Refl() 1034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * PURPOSE: Convert from direct form coefficients to reflection coefficients 1044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * DESCRIPTION: 1054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Directform coeffs in Q12 are converted to 1064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * reflection coefficients Q15 1074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 1084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber void A_Refl( 1094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 a[], /* i : Directform coefficients */ 1104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 refl[], /* o : Reflection coefficients */ 1114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Flag *pOverflow 1124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ); 1134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; END 1164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 1184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 1194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 1204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif /* _A_REFL_H_ */ 1224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 125