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 * GSM AMR-NB speech codec R98 Version 7.5.0 March 2, 2001
33 * R99 Version 3.2.0
34 * REL-4 Version 4.0.0
35 *
36 ********************************************************************************
37 *
38 * File : q_plsf.c
39 * Purpose : common part (init, exit, reset) of LSF quantization
40 * module (rest in q_plsf_3.c and q_plsf_5.c)
41 *
42 ********************************************************************************
43 */
44
45 /*
46 ********************************************************************************
47 * MODULE INCLUDE FILE AND VERSION ID
48 ********************************************************************************
49 */
50
51 #include <stdlib.h>
52
53 #include "q_plsf.h"
54
55 /*
56 ********************************************************************************
57 * INCLUDE FILES
58 ********************************************************************************
59 */
60 #include "typedef.h"
61 #include "basic_op.h"
62
63
64 /*
65 ********************************************************************************
66 * PUBLIC PROGRAM CODE
67 ********************************************************************************
68 */
69
70 /*
71 **************************************************************************
72 *
73 * Function : Q_plsf_init
74 * Purpose : Allocates memory and initializes state variables
75 *
76 **************************************************************************
77 */
Q_plsf_init(Q_plsfState ** state)78 Word16 Q_plsf_init(Q_plsfState **state)
79 {
80 Q_plsfState* s;
81
82 if (state == (Q_plsfState **) NULL)
83 {
84 /* fprintf(stderr, "Q_plsf_init: invalid parameter\n"); */
85 return -1;
86 }
87 *state = NULL;
88
89 /* allocate memory */
90 if ((s = (Q_plsfState *) malloc(sizeof(Q_plsfState))) == NULL)
91 {
92 /* fprintf(stderr, "Q_plsf_init: can not malloc state structure\n"); */
93 return -1;
94 }
95
96 Q_plsf_reset(s);
97 *state = s;
98
99 return 0;
100 }
101
102 /*
103 **************************************************************************
104 *
105 * Function : Q_plsf_reset
106 * Purpose : Resets state memory
107 *
108 **************************************************************************
109 */
Q_plsf_reset(Q_plsfState * state)110 Word16 Q_plsf_reset(Q_plsfState *state)
111 {
112 Word16 i;
113
114 if (state == (Q_plsfState *) NULL)
115 {
116 /* fprintf(stderr, "Q_plsf_reset: invalid parameter\n"); */
117 return -1;
118 }
119
120 for (i = 0; i < M; i++)
121 state->past_rq[i] = 0;
122
123 return 0;
124 }
125
126 /*
127 **************************************************************************
128 *
129 * Function : Q_plsf_exit
130 * Purpose : The memory used for state memory is freed
131 *
132 **************************************************************************
133 */
Q_plsf_exit(Q_plsfState ** state)134 void Q_plsf_exit(Q_plsfState **state)
135 {
136 if (state == NULL || *state == NULL)
137 return;
138
139 /* deallocate memory */
140 free(*state);
141 *state = NULL;
142
143 return;
144 }
145