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/grid_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 grid_tbl[] used by the az_lsp()
48  function.
49 
50  //  Table for az_lsp()
51  //
52  // grid[0] = 1.0;
53  // grid[grid_points+1] = -1.0;
54  // for (i = 1; i < grid_points; i++)
55  //   grid[i] = cos((6.283185307*i)/(2.0*grid_points));
56  //
57  //
58 
59 ------------------------------------------------------------------------------
60 */
61 
62 /*----------------------------------------------------------------------------
63 ; INCLUDES
64 ----------------------------------------------------------------------------*/
65 #include "typedef.h"
66 #include "az_lsp.h"
67 
68 /*--------------------------------------------------------------------------*/
69 #ifdef __cplusplus
70 extern "C"
71 {
72 #endif
73 
74     /*----------------------------------------------------------------------------
75     ; MACROS
76     ; [Define module specific macros here]
77     ----------------------------------------------------------------------------*/
78 
79     /*----------------------------------------------------------------------------
80     ; DEFINES
81     ; [Include all pre-processor statements here. Include conditional
82     ; compile variables also.]
83     ----------------------------------------------------------------------------*/
84 #define grid_points 60
85 
86     /*----------------------------------------------------------------------------
87     ; LOCAL FUNCTION DEFINITIONS
88     ; [List function prototypes here]
89     ----------------------------------------------------------------------------*/
90 
91     /*----------------------------------------------------------------------------
92     ; LOCAL VARIABLE DEFINITIONS
93     ; [Variable declaration - defined here and used outside this module]
94     ----------------------------------------------------------------------------*/
95     const Word16 grid[grid_points + 1] =
96     {
97         32760, 32723, 32588, 32364, 32051, 31651,
98         31164, 30591, 29935, 29196, 28377, 27481,
99         26509, 25465, 24351, 23170, 21926, 20621,
100         19260, 17846, 16384, 14876, 13327, 11743,
101         10125, 8480, 6812, 5126, 3425, 1714,
102         0, -1714, -3425, -5126, -6812, -8480,
103         -10125, -11743, -13327, -14876, -16384, -17846,
104         -19260, -20621, -21926, -23170, -24351, -25465,
105         -26509, -27481, -28377, -29196, -29935, -30591,
106         -31164, -31651, -32051, -32364, -32588, -32723,
107         -32760
108     };
109 
110     /*--------------------------------------------------------------------------*/
111 #ifdef __cplusplus
112 }
113 #endif
114 
115 /*
116 ------------------------------------------------------------------------------
117  FUNCTION NAME:
118 ------------------------------------------------------------------------------
119  INPUT AND OUTPUT DEFINITIONS
120 
121  Inputs:
122     None
123 
124  Outputs:
125     None
126 
127  Returns:
128     None
129 
130  Global Variables Used:
131     None
132 
133  Local Variables Needed:
134     None
135 
136 ------------------------------------------------------------------------------
137  FUNCTION DESCRIPTION
138 
139  None
140 
141 ------------------------------------------------------------------------------
142  REQUIREMENTS
143 
144  None
145 
146 ------------------------------------------------------------------------------
147  REFERENCES
148 
149  [1] grid.tab,  UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
150 
151 ------------------------------------------------------------------------------
152  PSEUDO-CODE
153 
154 
155 ------------------------------------------------------------------------------
156  RESOURCES USED [optional]
157 
158  When the code is written for a specific target processor the
159  the resources used should be documented below.
160 
161  HEAP MEMORY USED: x bytes
162 
163  STACK MEMORY USED: x bytes
164 
165  CLOCK CYCLES: (cycle count equation for this function) + (variable
166                 used to represent cycle count for each subroutine
167                 called)
168      where: (cycle count variable) = cycle count for [subroutine
169                                      name]
170 
171 ------------------------------------------------------------------------------
172  CAUTION [optional]
173  [State any special notes, constraints or cautions for users of this function]
174 
175 ------------------------------------------------------------------------------
176 */
177 
178 /*----------------------------------------------------------------------------
179 ; FUNCTION CODE
180 ----------------------------------------------------------------------------*/
181 
182