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 #include "pow2.h" 57 58 /*--------------------------------------------------------------------------*/ 59 #ifdef __cplusplus 60 extern "C" 61 { 62 #endif 63 64 /*---------------------------------------------------------------------------- 65 ; MACROS 66 ; [Define module specific macros here] 67 ----------------------------------------------------------------------------*/ 68 69 /*---------------------------------------------------------------------------- 70 ; DEFINES 71 ; [Include all pre-processor statements here. Include conditional 72 ; compile variables also.] 73 ----------------------------------------------------------------------------*/ 74 75 /*---------------------------------------------------------------------------- 76 ; LOCAL FUNCTION DEFINITIONS 77 ; [List function prototypes here] 78 ----------------------------------------------------------------------------*/ 79 80 /*---------------------------------------------------------------------------- 81 ; LOCAL VARIABLE DEFINITIONS 82 ; [Variable declaration - defined here and used outside this module] 83 ----------------------------------------------------------------------------*/ 84 85 const Word16 pow2_tbl[33] = 86 { 87 16384, 16743, 17109, 17484, 17867, 18258, 18658, 19066, 19484, 19911, 88 20347, 20792, 21247, 21713, 22188, 22674, 23170, 23678, 24196, 24726, 89 25268, 25821, 26386, 26964, 27554, 28158, 28774, 29405, 30048, 30706, 90 31379, 32066, 32767 91 }; 92 93 /*--------------------------------------------------------------------------*/ 94 #ifdef __cplusplus 95 } 96 #endif 97 98 /* 99 ------------------------------------------------------------------------------ 100 FUNCTION NAME: 101 ------------------------------------------------------------------------------ 102 INPUT AND OUTPUT DEFINITIONS 103 104 Inputs: 105 None 106 107 Outputs: 108 None 109 110 Returns: 111 None 112 113 Global Variables Used: 114 None 115 116 Local Variables Needed: 117 None 118 119 ------------------------------------------------------------------------------ 120 FUNCTION DESCRIPTION 121 122 None 123 124 ------------------------------------------------------------------------------ 125 REQUIREMENTS 126 127 None 128 129 ------------------------------------------------------------------------------ 130 REFERENCES 131 132 [1] pow2.tab, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 133 134 ------------------------------------------------------------------------------ 135 PSEUDO-CODE 136 137 138 ------------------------------------------------------------------------------ 139 RESOURCES USED [optional] 140 141 When the code is written for a specific target processor the 142 the resources used should be documented below. 143 144 HEAP MEMORY USED: x bytes 145 146 STACK MEMORY USED: x bytes 147 148 CLOCK CYCLES: (cycle count equation for this function) + (variable 149 used to represent cycle count for each subroutine 150 called) 151 where: (cycle count variable) = cycle count for [subroutine 152 name] 153 154 ------------------------------------------------------------------------------ 155 CAUTION [optional] 156 [State any special notes, constraints or cautions for users of this function] 157 158 ------------------------------------------------------------------------------ 159 */ 160 161 /*---------------------------------------------------------------------------- 162 ; FUNCTION CODE 163 ----------------------------------------------------------------------------*/ 164 165
