1 /* ------------------------------------------------------------------ 2 * Copyright (C) 1998-2009 PacketVideo 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13 * express or implied. 14 * See the License for the specific language governing permissions 15 * and limitations under the License. 16 * ------------------------------------------------------------------- 17 */ 18 /**************************************************************************************** 19 Portions of this file are derived from the following 3GPP standard: 20 21 3GPP TS 26.073 22 ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 23 Available from http://www.3gpp.org 24 25 (C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 26 Permission to distribute, modify and use this file under the standard license 27 terms listed above has been obtained from the copyright holder. 28 ****************************************************************************************/ 29 /* 30 31 Filename: /audio/gsm_amr/c/include/az_lsp.h.h 32 33 34 ------------------------------------------------------------------------------ 35 REVISION HISTORY 36 37 38 Description: Changed function prototype; pointer to overflow flag is passed 39 in as a parameter. Added extern declaration for grid_tbl[], 40 defined in grid_tbl.c 41 42 Description: Moved _cplusplus #ifdef after Include section. 43 44 Who: Date: 45 Description: 46 47 48 ------------------------------------------------------------------------------ 49 INCLUDE DESCRIPTION 50 51 This file contains all the constant definitions and prototype definitions 52 needed by the function Az_lsp() 53 54 ------------------------------------------------------------------------------ 55 */ 56 57 #ifndef AZ_LSP_H 58 #define AZ_LSP_H 59 60 /*---------------------------------------------------------------------------- 61 ; INCLUDES 62 ----------------------------------------------------------------------------*/ 63 #include "typedef.h" 64 65 /*--------------------------------------------------------------------------*/ 66 #ifdef __cplusplus 67 extern "C" 68 { 69 #endif 70 71 /*---------------------------------------------------------------------------- 72 ; MACROS 73 ; Define module specific macros here 74 ----------------------------------------------------------------------------*/ 75 76 /*---------------------------------------------------------------------------- 77 ; DEFINES 78 ; Include all pre-processor statements here. 79 ----------------------------------------------------------------------------*/ 80 #define grid_points 60 81 82 /*---------------------------------------------------------------------------- 83 ; EXTERNAL VARIABLES REFERENCES 84 ; Declare variables used in this module but defined elsewhere 85 ----------------------------------------------------------------------------*/ 86 extern const Word16 grid[]; 87 88 /*---------------------------------------------------------------------------- 89 ; SIMPLE TYPEDEF'S 90 ----------------------------------------------------------------------------*/ 91 92 /*---------------------------------------------------------------------------- 93 ; ENUMERATED TYPEDEF'S 94 ----------------------------------------------------------------------------*/ 95 96 /*---------------------------------------------------------------------------- 97 ; STRUCTURES TYPEDEF'S 98 ----------------------------------------------------------------------------*/ 99 100 /*---------------------------------------------------------------------------- 101 ; GLOBAL FUNCTION DEFINITIONS 102 ; Function Prototype declaration 103 ----------------------------------------------------------------------------*/ 104 void Az_lsp( 105 Word16 a[], /* (i) : predictor coefficients (MP1) */ 106 Word16 lsp[], /* (o) : line spectral pairs (M) */ 107 Word16 old_lsp[], /* (i) : old lsp[] (in case not found 10 roots) (M) */ 108 Flag *pOverflow /* (i/o): overflow flag */ 109 ); 110 111 112 /*---------------------------------------------------------------------------- 113 ; END 114 ----------------------------------------------------------------------------*/ 115 #ifdef __cplusplus 116 } 117 #endif 118 119 #endif /* _AZ_LSP_H */ 120 121
