lag_wind_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/lag_wind_tab.c
33
34     Date: 01/29/2002
35
36------------------------------------------------------------------------------
37 REVISION HISTORY
38
39 Description: Added #ifdef __cplusplus and removed "extern" from table
40              definition. Removed corresponding header file from Include
41              section.
42
43 Description: Put "extern" back.
44
45 Description:
46
47------------------------------------------------------------------------------
48 INPUT AND OUTPUT DEFINITIONS
49
50 Inputs:
51    None
52
53 Local Stores/Buffers/Pointers Needed:
54    None
55
56 Global Stores/Buffers/Pointers Needed:
57    None
58
59 Outputs:
60    None
61
62 Pointers and Buffers Modified:
63    None
64
65 Local Stores Modified:
66    None
67
68 Global Stores Modified:
69    None
70
71------------------------------------------------------------------------------
72 FUNCTION DESCRIPTION
73
74      File             : lag_wind.tab
75      Purpose          : Table of lag_window for autocorrelation.
76
77 *-----------------------------------------------------*
78 | Table of lag_window for autocorrelation.            |
79 |                                                     |
80 | noise floor = 1.0001   = (0.9999  on r[1] ..r[10])  |
81 | Bandwitdh expansion = 60 Hz                         |
82 |                                                     |
83 |                                                     |
84 | lag_wind[0] =  1.00000000    (not stored)           |
85 | lag_wind[1] =  0.99879038                           |
86 | lag_wind[2] =  0.99546897                           |
87 | lag_wind[3] =  0.98995781                           |
88 | lag_wind[4] =  0.98229337                           |
89 | lag_wind[5] =  0.97252619                           |
90 | lag_wind[6] =  0.96072036                           |
91 | lag_wind[7] =  0.94695264                           |
92 | lag_wind[8] =  0.93131179                           |
93 | lag_wind[9] =  0.91389757                           |
94 | lag_wind[10]=  0.89481968                           |
95 -------------------------------------------------------
96
97------------------------------------------------------------------------------
98 REQUIREMENTS
99
100 None
101
102------------------------------------------------------------------------------
103 REFERENCES
104
105 None
106
107------------------------------------------------------------------------------
108 PSEUDO-CODE
109
110
111------------------------------------------------------------------------------
112 RESOURCES USED
113   When the code is written for a specific target processor the
114     the resources used should be documented below.
115
116 STACK USAGE: [stack count for this module] + [variable to represent
117          stack usage for each subroutine called]
118
119     where: [stack usage variable] = stack usage for [subroutine
120         name] (see [filename].ext)
121
122 DATA MEMORY USED: x words
123
124 PROGRAM MEMORY USED: x words
125
126 CLOCK CYCLES: [cycle count equation for this module] + [variable
127           used to represent cycle count for each subroutine
128           called]
129
130     where: [cycle count variable] = cycle count for [subroutine
131        name] (see [filename].ext)
132
133------------------------------------------------------------------------------
134*/
135
136
137/*----------------------------------------------------------------------------
138; INCLUDES
139----------------------------------------------------------------------------*/
140#include    "typedef.h"
141
142/*--------------------------------------------------------------------------*/
143#ifdef __cplusplus
144extern "C"
145{
146#endif
147
148    /*----------------------------------------------------------------------------
149    ; MACROS
150    ; Define module specific macros here
151    ----------------------------------------------------------------------------*/
152
153
154    /*----------------------------------------------------------------------------
155    ; DEFINES
156    ; Include all pre-processor statements here. Include conditional
157    ; compile variables also.
158    ----------------------------------------------------------------------------*/
159
160    /*----------------------------------------------------------------------------
161    ; LOCAL FUNCTION DEFINITIONS
162    ; Function Prototype declaration
163    ----------------------------------------------------------------------------*/
164
165
166    /*----------------------------------------------------------------------------
167    ; LOCAL STORE/BUFFER/POINTER DEFINITIONS
168    ; Variable declaration - defined here and used outside this module
169    ----------------------------------------------------------------------------*/
170    extern const Word16 lag_h[10] =
171    {
172        32728,
173        32619,
174        32438,
175        32187,
176        31867,
177        31480,
178        31029,
179        30517,
180        29946,
181        29321
182    };
183
184    extern const Word16 lag_l[10] =
185    {
186        11904,
187        17280,
188        30720,
189        25856,
190        24192,
191        28992,
192        24384,
193        7360,
194        19520,
195        14784
196    };
197
198    /*----------------------------------------------------------------------------
199    ; EXTERNAL FUNCTION REFERENCES
200    ; Declare functions defined elsewhere and referenced in this module
201    ----------------------------------------------------------------------------*/
202
203
204    /*----------------------------------------------------------------------------
205    ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
206    ; Declare variables used in this module but defined elsewhere
207    ----------------------------------------------------------------------------*/
208
209
210    /*--------------------------------------------------------------------------*/
211#ifdef __cplusplus
212}
213#endif
214
215/*----------------------------------------------------------------------------
216; FUNCTION CODE
217----------------------------------------------------------------------------*/
218
219/*----------------------------------------------------------------------------
220; Define all local variables
221----------------------------------------------------------------------------*/
222
223
224/*----------------------------------------------------------------------------
225; Function body here
226----------------------------------------------------------------------------*/
227
228
229/*----------------------------------------------------------------------------
230; Return nothing or data or data pointer
231----------------------------------------------------------------------------*/
232
233