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 32 Filename: inter_36_tab.cpp 33 34 ------------------------------------------------------------------------------ 35 INPUT AND OUTPUT DEFINITIONS 36 37 Inputs: 38 None 39 40 Local Stores/Buffers/Pointers Needed: 41 None 42 43 Global Stores/Buffers/Pointers Needed: 44 None 45 46 Outputs: 47 None 48 49 Pointers and Buffers Modified: 50 None 51 52 Local Stores Modified: 53 None 54 55 Global Stores Modified: 56 None 57 58 ------------------------------------------------------------------------------ 59 FUNCTION DESCRIPTION 60 61 File : inter_36.tab 62 Purpose : Tables for interpolating the normalized correlation 63 with 1/3 or 1/6 resolution. 64 65 66 ------------------------------------------------------------------------------ 67 REQUIREMENTS 68 69 None 70 71 ------------------------------------------------------------------------------ 72 REFERENCES 73 74 None 75 76 ------------------------------------------------------------------------------ 77 PSEUDO-CODE 78 79 80 ------------------------------------------------------------------------------ 81 */ 82 83 84 /*---------------------------------------------------------------------------- 85 ; INCLUDES 86 ----------------------------------------------------------------------------*/ 87 #include "inter_36_tab.h" 88 89 /*--------------------------------------------------------------------------*/ 90 #ifdef __cplusplus 91 extern "C" 92 { 93 #endif 94 95 /*---------------------------------------------------------------------------- 96 ; MACROS 97 ; Define module specific macros here 98 ----------------------------------------------------------------------------*/ 99 100 101 /*---------------------------------------------------------------------------- 102 ; DEFINES 103 ; Include all pre-processor statements here. Include conditional 104 ; compile variables also. 105 ----------------------------------------------------------------------------*/ 106 #define UP_SAMP_MAX 6 107 #define FIR_SIZE (UP_SAMP_MAX*L_INTER_SRCH+1) 108 109 /*---------------------------------------------------------------------------- 110 ; LOCAL FUNCTION DEFINITIONS 111 ; Function Prototype declaration 112 ----------------------------------------------------------------------------*/ 113 114 115 /*---------------------------------------------------------------------------- 116 ; LOCAL STORE/BUFFER/POINTER DEFINITIONS 117 ; Variable declaration - defined here and used outside this module 118 ----------------------------------------------------------------------------*/ 119 /* 1/6 resolution interpolation filter (-3 dB at 3600 Hz) */ 120 /* Note: The IS641 (7.4) 1/3 resolution filter is simply a subsampled 121 version of the 1/6 resolution filter, i.e. it uses 122 every second coefficient: 123 124 inter_3[k] = inter_6[2*k], 0 <= k <= 3*L_INTER_SRCH 125 */ 126 127 const Word16 inter_6[FIR_SIZE] = 128 { 129 29519, 130 28316, 24906, 19838, 13896, 7945, 2755, 131 -1127, -3459, -4304, -3969, -2899, -1561, 132 -336, 534, 970, 1023, 823, 516, 133 220, 0, -131, -194, -215, 0 134 }; 135 136 /*---------------------------------------------------------------------------- 137 ; EXTERNAL FUNCTION REFERENCES 138 ; Declare functions defined elsewhere and referenced in this module 139 ----------------------------------------------------------------------------*/ 140 141 142 /*---------------------------------------------------------------------------- 143 ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES 144 ; Declare variables used in this module but defined elsewhere 145 ----------------------------------------------------------------------------*/ 146 147 148 /*--------------------------------------------------------------------------*/ 149 #ifdef __cplusplus 150 } 151 #endif 152 153 /*---------------------------------------------------------------------------- 154 ; FUNCTION CODE 155 ----------------------------------------------------------------------------*/ 156 157 /*---------------------------------------------------------------------------- 158 ; Define all local variables 159 ----------------------------------------------------------------------------*/ 160 161 162 /*---------------------------------------------------------------------------- 163 ; Function body here 164 ----------------------------------------------------------------------------*/ 165 166 167 /*---------------------------------------------------------------------------- 168 ; Return nothing or data or data pointer 169 ----------------------------------------------------------------------------*/ 170 171 172 173 174 175