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 *****************************************************************************
20 *
21 * GSM AMR-NB speech codec R98 Version 7.5.0 March 2, 2001
22 * R99 Version 3.2.0
23 * REL-4 Version 4.0.0
24 *
25 *****************************************************************************
26 *
27 * File : d_homing.c
28 *
29 *****************************************************************************
30 */
31
32 /*
33 *****************************************************************************
34 * MODULE INCLUDE FILE AND VERSION ID
35 *****************************************************************************
36 */
37
38 #include "d_homing.h"
39 //const char d_homing_id[] = "@(#)$Id $" d_homing_h;
40
41 /*
42 *****************************************************************************
43 * INCLUDE FILES
44 *****************************************************************************
45 */
46
47 #include <stdlib.h>
48 #include "typedef.h"
49 #include "cnst.h"
50 #include "mode.h"
51 #include "bits2prm.h"
52
53 #include "d_homing.tab"
54
55 /* get rid of compiler warning "`bitno' defined but never used" */
56 //static void* dummy[] = { (void *) bitno, (void *) dummy };
57
58
59 /*
60 *****************************************************************************
61 * PRIVATE PROGRAM CODE
62 *****************************************************************************
63 */
64
65 /*
66 ********************************************************************************
67 *
68 * Function : dhf_test
69 * In : input_frame[] one frame of encoded serial bits
70 * mode mode type
71 * nparms number of parameters to check
72 * Out : none
73 * Calls : Bits2prm
74 * Tables : d_homing.tab
75 * Compile Defines : none
76 * Return : 0 input frame does not match the decoder homing
77 * frame pattern (up to nparms)
78 * 1 input frame matches the decoder homing frame pattern
79 * (for the first nparms parameters)
80 * Information : The encoded serial bits are converted to all parameters
81 * of the corresponding mode. These parameters are compared
82 * with all parameters of the corresponding decoder homing frame.
83 *
84 ********************************************************************************
85 */
86
dhf_test(Word16 input_frame[],enum Mode mode,Word16 nparms)87 static Word16 dhf_test(Word16 input_frame[], enum Mode mode, Word16 nparms)
88 {
89 Word16 i, j;
90 Word16 param[MAX_PRM_SIZE];
91
92
93 /* retrieve the encoded parameters from the received serial bits */
94 Bits2prm(mode, input_frame, param);
95
96 j = 0;
97
98 /* check if the encoded parameters matches the parameters
99 of the corresponding decoder homing frame */
100 for (i = 0; i < nparms; i++)
101 {
102 j = param[i] ^ dhf[mode][i];
103
104 if (j)
105 break;
106 }
107
108 return !j;
109 }
110
111
112 /*
113 *****************************************************************************
114 * PUBLIC PROGRAM CODE
115 *****************************************************************************
116 */
117
118
119 /*
120 ********************************************************************************
121 *
122 * Function : decoder_homing_frame_test
123 * In : input_frame[] one frame of encoded serial bits
124 * mode mode type
125 * Out : none
126 * Calls : dhf_test
127 * Tables : d_homing.tab
128 * Compile Defines : none
129 * Return : 0 input frame does not match the decoder homing frame
130 * pattern
131 * 1 input frame matches the decoder homing frame pattern
132 * Information : The encoded serial bits are converted to all parameters
133 * of the corresponding mode. These parameters are compared
134 * with all parameters of the corresponding decoder homing frame.
135 *
136 ********************************************************************************
137 */
138
decoder_homing_frame_test(Word16 input_frame[],enum Mode mode)139 Word16 decoder_homing_frame_test(Word16 input_frame[], enum Mode mode)
140 {
141 /* perform test for COMPLETE parameter frame */
142 return dhf_test(input_frame, mode, prmno[mode]);
143 }
144
145
146 /*
147 ********************************************************************************
148 *
149 * Function : decoder_homing_frame_test_first
150 * In : input_frame[] one frame of encoded serial bits
151 * mode mode type
152 * Out : none
153 * Calls : Bits2prm
154 * Tables : d_homing.tab
155 * Compile Defines : none
156 * Return : 0 input frame does not match the decoder homing frame
157 * pattern (up to and including the first subframe)
158 * 1 input frame matches the decoder homing frame pattern
159 * (up to and including the first subframe)
160 * Information : The encoded serial bits are converted to all parameters
161 * of the corresponding mode. These parameters are
162 * compared with the parameters for LPC and first subframe
163 * of the decoder homing frame.
164 *
165 ********************************************************************************
166 */
167
decoder_homing_frame_test_first(Word16 input_frame[],enum Mode mode)168 Word16 decoder_homing_frame_test_first(Word16 input_frame[], enum Mode mode)
169 {
170 /* perform test for FIRST SUBFRAME of parameter frame ONLY */
171 return dhf_test(input_frame, mode, prmnofsf[mode]);
172 }
173