inter_36_tab.cpp revision b841f14f8e51f2365945281fbfa54ef6a1b1b5a6
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/**************************************************************************************** 19Portions 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) 26Permission to distribute, modify and use this file under the standard license 27terms listed above has been obtained from the copyright holder. 28****************************************************************************************/ 29/* 30------------------------------------------------------------------------------ 31 32 Pathname: .audio/gsm-amr/c/src/inter_36_tab.c 33 34 Date: 02/01/2002 35 36------------------------------------------------------------------------------ 37 REVISION HISTORY 38 39 Description: Changed tables from static const to just const. 40 41 Description: Added #ifdef __cplusplus and removed "extern" from table 42 definition. Removed corresponding header file from Include 43 section. 44 45 Description: Put "extern" back. 46 47 Description: 48 49------------------------------------------------------------------------------ 50 INPUT AND OUTPUT DEFINITIONS 51 52 Inputs: 53 None 54 55 Local Stores/Buffers/Pointers Needed: 56 None 57 58 Global Stores/Buffers/Pointers Needed: 59 None 60 61 Outputs: 62 None 63 64 Pointers and Buffers Modified: 65 None 66 67 Local Stores Modified: 68 None 69 70 Global Stores Modified: 71 None 72 73------------------------------------------------------------------------------ 74 FUNCTION DESCRIPTION 75 76 File : inter_36.tab 77 Purpose : Tables for interpolating the normalized correlation 78 with 1/3 or 1/6 resolution. 79 80 81------------------------------------------------------------------------------ 82 REQUIREMENTS 83 84 None 85 86------------------------------------------------------------------------------ 87 REFERENCES 88 89 None 90 91------------------------------------------------------------------------------ 92 PSEUDO-CODE 93 94 95------------------------------------------------------------------------------ 96 RESOURCES USED 97 When the code is written for a specific target processor the 98 the resources used should be documented below. 99 100 STACK USAGE: [stack count for this module] + [variable to represent 101 stack usage for each subroutine called] 102 103 where: [stack usage variable] = stack usage for [subroutine 104 name] (see [filename].ext) 105 106 DATA MEMORY USED: x words 107 108 PROGRAM MEMORY USED: x words 109 110 CLOCK CYCLES: [cycle count equation for this module] + [variable 111 used to represent cycle count for each subroutine 112 called] 113 114 where: [cycle count variable] = cycle count for [subroutine 115 name] (see [filename].ext) 116 117------------------------------------------------------------------------------ 118*/ 119 120 121/*---------------------------------------------------------------------------- 122; INCLUDES 123----------------------------------------------------------------------------*/ 124#include "typedef.h" 125#include "cnst.h" 126 127/*--------------------------------------------------------------------------*/ 128#ifdef __cplusplus 129extern "C" 130{ 131#endif 132 133 /*---------------------------------------------------------------------------- 134 ; MACROS 135 ; Define module specific macros here 136 ----------------------------------------------------------------------------*/ 137 138 139 /*---------------------------------------------------------------------------- 140 ; DEFINES 141 ; Include all pre-processor statements here. Include conditional 142 ; compile variables also. 143 ----------------------------------------------------------------------------*/ 144#define UP_SAMP_MAX 6 145#define FIR_SIZE (UP_SAMP_MAX*L_INTER_SRCH+1) 146 147 /*---------------------------------------------------------------------------- 148 ; LOCAL FUNCTION DEFINITIONS 149 ; Function Prototype declaration 150 ----------------------------------------------------------------------------*/ 151 152 153 /*---------------------------------------------------------------------------- 154 ; LOCAL STORE/BUFFER/POINTER DEFINITIONS 155 ; Variable declaration - defined here and used outside this module 156 ----------------------------------------------------------------------------*/ 157 /* 1/6 resolution interpolation filter (-3 dB at 3600 Hz) */ 158 /* Note: The IS641 (7.4) 1/3 resolution filter is simply a subsampled 159 version of the 1/6 resolution filter, i.e. it uses 160 every second coefficient: 161 162 inter_3[k] = inter_6[2*k], 0 <= k <= 3*L_INTER_SRCH 163 */ 164 165 extern const Word16 inter_6[FIR_SIZE] = 166 { 167 29519, 168 28316, 24906, 19838, 13896, 7945, 2755, 169 -1127, -3459, -4304, -3969, -2899, -1561, 170 -336, 534, 970, 1023, 823, 516, 171 220, 0, -131, -194, -215, 0 172 }; 173 174 /*---------------------------------------------------------------------------- 175 ; EXTERNAL FUNCTION REFERENCES 176 ; Declare functions defined elsewhere and referenced in this module 177 ----------------------------------------------------------------------------*/ 178 179 180 /*---------------------------------------------------------------------------- 181 ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES 182 ; Declare variables used in this module but defined elsewhere 183 ----------------------------------------------------------------------------*/ 184 185 186 /*--------------------------------------------------------------------------*/ 187#ifdef __cplusplus 188} 189#endif 190 191/*---------------------------------------------------------------------------- 192; FUNCTION CODE 193----------------------------------------------------------------------------*/ 194 195/*---------------------------------------------------------------------------- 196; Define all local variables 197----------------------------------------------------------------------------*/ 198 199 200/*---------------------------------------------------------------------------- 201; Function body here 202----------------------------------------------------------------------------*/ 203 204 205/*---------------------------------------------------------------------------- 206; Return nothing or data or data pointer 207----------------------------------------------------------------------------*/ 208 209 210 211 212 213