1b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/* ------------------------------------------------------------------ 2b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * Copyright (C) 1998-2009 PacketVideo 3b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * 4b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * you may not use this file except in compliance with the License. 6b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * You may obtain a copy of the License at 7b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * 8b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * 10b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * Unless required by applicable law or agreed to in writing, software 11b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * express or implied. 14b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * See the License for the specific language governing permissions 15b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * and limitations under the License. 16b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * ------------------------------------------------------------------- 17b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber */ 18b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/**************************************************************************************** 19b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas HuberPortions of this file are derived from the following 3GPP standard: 20b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 21b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 3GPP TS 26.073 22b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 23b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Available from http://www.3gpp.org 24b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 25b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 26b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas HuberPermission to distribute, modify and use this file under the standard license 27b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huberterms listed above has been obtained from the copyright holder. 28b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber****************************************************************************************/ 29b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/* 30b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 31b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 32b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 33b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 34b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Filename: /audio/gsm_amr/c/src/include/lpc.h 35b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 36b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Date: 01/29/2002 37b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 38b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 39b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REVISION HISTORY 40b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 41b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Replaced "int" and/or "char" with OSCL defined types. 42b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 43b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Moved _cplusplus #ifdef after Include section. 44b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 45b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: 46b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 47b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 48b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber INCLUDE DESCRIPTION 49b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 50b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber File : lpc.h 51b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Purpose : 2 LP analyses centered at 2nd and 4th subframe 52b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber for mode 12.2. For all other modes a 53b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber LP analysis centered at 4th subframe is 54b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber performed. 55b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 56b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 57b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber*/ 58b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 59b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#ifndef _LPC_H_ 60b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#define _LPC_H_ 61b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#define lpc_h "$Id $" 62b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 63b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 64b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; INCLUDES 65b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 66b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "typedef.h" 67b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "levinson.h" 68b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "mode.h" 69b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 70b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 71b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*--------------------------------------------------------------------------*/ 72b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#ifdef __cplusplus 73b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huberextern "C" 74b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber{ 75b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#endif 76b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 77b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /*---------------------------------------------------------------------------- 78b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; MACROS 79b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; [Define module specific macros here] 80b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ----------------------------------------------------------------------------*/ 81b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 82b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /*---------------------------------------------------------------------------- 83b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; DEFINES 84b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; [Include all pre-processor statements here.] 85b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ----------------------------------------------------------------------------*/ 86b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 87b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /*---------------------------------------------------------------------------- 88b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; EXTERNAL VARIABLES REFERENCES 89b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; [Declare variables used in this module but defined elsewhere] 90b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ----------------------------------------------------------------------------*/ 91b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 92b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /*---------------------------------------------------------------------------- 93b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; SIMPLE TYPEDEF'S 94b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ----------------------------------------------------------------------------*/ 95b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 96b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /*---------------------------------------------------------------------------- 97b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; ENUMERATED TYPEDEF'S 98b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ----------------------------------------------------------------------------*/ 99b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 100b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /*---------------------------------------------------------------------------- 101b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; STRUCTURES TYPEDEF'S 102b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ----------------------------------------------------------------------------*/ 103b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber typedef struct 104b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 105b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber LevinsonState *levinsonSt; 106b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } lpcState; 107b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 108b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 109b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /*---------------------------------------------------------------------------- 110b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; GLOBAL FUNCTION DEFINITIONS 111b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ; [List function prototypes here] 112b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ----------------------------------------------------------------------------*/ 113b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 lpc_init(lpcState **st); 114b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* initialize one instance of the pre processing state. 115b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Stores pointer to filter status struct in *st. This pointer has to 116b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber be passed to lpc in each call. 117b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber returns 0 on success 118b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber */ 119b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 120b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 lpc_reset(lpcState *st); 121b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* reset of pre processing state (i.e. set state memory to zero) 122b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber returns 0 on success 123b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber */ 124b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber void lpc_exit(lpcState **st); 125b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* de-initialize pre processing state (i.e. free status struct) 126b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber stores NULL in *st 127b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber */ 128b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 129b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber void lpc( 130b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber lpcState *st, /* i/o: State struct */ 131b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber enum Mode mode, /* i : coder mode */ 132b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 x[], /* i : Input signal Q15 */ 133b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 x_12k2[], /* i : Input signal (EFR) Q15 */ 134b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 a[], /* o : predictor coefficients Q12 */ 135b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Flag *pOverflow 136b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ); 137b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 138b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 139b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#ifdef __cplusplus 140b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber} 141b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#endif 142b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 143b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#endif /* _LPC_H_ */ 144b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 145b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 146b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 147b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 148