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/src/pow2_tbl.c 32 33 ------------------------------------------------------------------------------ 34 REVISION HISTORY 35 36 Description: Added #ifdef __cplusplus and removed "extern" from table 37 definition. 38 39 Description: Put "extern" back. 40 41 Who: Date: 42 Description: 43 44 ------------------------------------------------------------------------------ 45 MODULE DESCRIPTION 46 47 This file contains the declaration for log2_tbl[] used by the Pow2() function. 48 49 ------------------------------------------------------------------------------ 50 */ 51 52 /*---------------------------------------------------------------------------- 53 ; INCLUDES 54 ----------------------------------------------------------------------------*/ 55 #include "typedef.h" 56 57 /*--------------------------------------------------------------------------*/ 58 #ifdef __cplusplus 59 extern "C" 60 { 61 #endif 62 63 /*---------------------------------------------------------------------------- 64 ; MACROS 65 ; [Define module specific macros here] 66 ----------------------------------------------------------------------------*/ 67 68 /*---------------------------------------------------------------------------- 69 ; DEFINES 70 ; [Include all pre-processor statements here. Include conditional 71 ; compile variables also.] 72 ----------------------------------------------------------------------------*/ 73 74 /*---------------------------------------------------------------------------- 75 ; LOCAL FUNCTION DEFINITIONS 76 ; [List function prototypes here] 77 ----------------------------------------------------------------------------*/ 78 79 /*---------------------------------------------------------------------------- 80 ; LOCAL VARIABLE DEFINITIONS 81 ; [Variable declaration - defined here and used outside this module] 82 ----------------------------------------------------------------------------*/ 83 84 extern const Word16 pow2_tbl[33] = 85 { 86 16384, 16743, 17109, 17484, 17867, 18258, 18658, 19066, 19484, 19911, 87 20347, 20792, 21247, 21713, 22188, 22674, 23170, 23678, 24196, 24726, 88 25268, 25821, 26386, 26964, 27554, 28158, 28774, 29405, 30048, 30706, 89 31379, 32066, 32767 90 }; 91 92 /*--------------------------------------------------------------------------*/ 93 #ifdef __cplusplus 94 } 95 #endif 96 97 /* 98 ------------------------------------------------------------------------------ 99 FUNCTION NAME: 100 ------------------------------------------------------------------------------ 101 INPUT AND OUTPUT DEFINITIONS 102 103 Inputs: 104 None 105 106 Outputs: 107 None 108 109 Returns: 110 None 111 112 Global Variables Used: 113 None 114 115 Local Variables Needed: 116 None 117 118 ------------------------------------------------------------------------------ 119 FUNCTION DESCRIPTION 120 121 None 122 123 ------------------------------------------------------------------------------ 124 REQUIREMENTS 125 126 None 127 128 ------------------------------------------------------------------------------ 129 REFERENCES 130 131 [1] pow2.tab, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 132 133 ------------------------------------------------------------------------------ 134 PSEUDO-CODE 135 136 137 ------------------------------------------------------------------------------ 138 RESOURCES USED [optional] 139 140 When the code is written for a specific target processor the 141 the resources used should be documented below. 142 143 HEAP MEMORY USED: x bytes 144 145 STACK MEMORY USED: x bytes 146 147 CLOCK CYCLES: (cycle count equation for this function) + (variable 148 used to represent cycle count for each subroutine 149 called) 150 where: (cycle count variable) = cycle count for [subroutine 151 name] 152 153 ------------------------------------------------------------------------------ 154 CAUTION [optional] 155 [State any special notes, constraints or cautions for users of this function] 156 157 ------------------------------------------------------------------------------ 158 */ 159 160 /*---------------------------------------------------------------------------- 161 ; FUNCTION CODE 162 ----------------------------------------------------------------------------*/ 163 164
