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comparison src/cs/layer1/gtt_include/ctm/fifo.h @ 0:b6a5e36de839

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src/cs: initial import from Magnetite
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 15 Jul 2018 04:39:26 +0000
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1 /*
2 *******************************************************************************
3 *
4 * COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH
5 * 90411 NUERNBERG, GERMANY, Tel Int + 49 911 5217 100
6 *
7 * The program(s) may be used and/or copied only with the
8 * written permission from Ericsson or in accordance
9 * with the terms and conditions stipulated in the agreement or
10 * contract under which the program(s) have been supplied.
11 *
12 *******************************************************************************
13 *
14 * File : fifo.h
15 * Author : Matthias Doerbecker
16 * Tested Platforms : DEC Alpha 250 4/266 (OSF/1 3.2)
17 * Description : File I/O for float and double (32/64 bit signed)
18 * values.
19 *
20 * Revision history
21 *
22 * Rev Date Name Description
23 * -------------------------------------------------------------------
24 * pA1 12-MAR-97 M.Doerbecker initial version
25 * (based on shortio.h pA2)
26 *
27 *******************************************************************************
28 */
29 #ifndef fifo_h
30 #define fifo_h "$Id: $"
31
32 /*
33 *******************************************************************************
34 * INCLUDE FILES
35 *******************************************************************************
36 */
37
38 #include "ctm_typedefs.h"
39 /*
40 *******************************************************************************
41 * DEFINITION OF CONSTANTS
42 *******************************************************************************
43 */
44
45 /*
46 *******************************************************************************
47 * DEFINITION OF DATA TYPES
48 *******************************************************************************
49 */
50
51 // typedef float Float;
52 // typedef char Char;
53
54 typedef enum {SHORTINT_FIFO, FLOAT_FIFO, CHAR_FIFO} fifo_type_t;
55
56
57 /* fifo_state_t is the state variable type that is used for both types */
58 /* of fifo structures: Shortint_fifo as well as Float_fifo. */
59
60 typedef struct
61 {
62 WORD16 *buffer_Shortint; /* buffer for Shortint_fifo_xxx() */
63 Float *buffer_Float; /* buffer for Float_fifo_xxx() */
64 Char *buffer_Char; /* buffer for Char_fifo_xxx() */
65 WORD32 length_buffer; /* maximum length of the fifo buffer */
66 WORD32 num_entries_actual;/* actual number of elements in fifo */
67 fifo_type_t fifo_type; /* either SHORTINT_FIFO or FLOAT_FIFO */
68 WORD32 magic_number; /* for detecting wheter fifo is initialized */
69 }
70 fifo_state_t;
71
72 /*
73 *******************************************************************************
74 * DECLARATION OF PROTOTYPES
75 *******************************************************************************
76 */
77
78
79 /*
80 *******************************************************************************
81 *
82 * Function : Shortint_fifo_init
83 * In : length_fifo determines maximukm length of the buffer
84 * Out : fifo_state initialized state variable
85 * Calls : calloc, fprintf, exit
86 * Tables : <none>
87 * Compile Defines : <none>
88 * Return : 0 on success, 1 in case of an error
89 * Information : initialization of a fifo structure for buffering
90 * Shortint data
91 *
92 *******************************************************************************
93 */
94
95 int Shortint_fifo_init(fifo_state_t *fifo_state,
96 WORD32 length_fifo);
97
98
99
100 /*
101 *******************************************************************************
102 *
103 * Function : Shortint_fifo_reset
104 * In :
105 * In/Out : fifo_state initialized state variable
106 * Calls : <none>
107 * Tables : <none>
108 * Compile Defines : <none>
109 * Return : 0 on success, 1 in case of an error
110 * Information : reset of the fifo structure, i.e. all buffered
111 * elements are removed
112 *
113 *******************************************************************************
114 */
115
116 int Shortint_fifo_reset(fifo_state_t *fifo_state);
117
118
119
120 /*
121 *******************************************************************************
122 *
123 * Function : Shortint_fifo_exit
124 * In : length_fifo determines maximum length of the buffer
125 * In/Out : fifo_state initialized state variable
126 * Calls : free, fprintf, exit
127 * Tables : <none>
128 * Compile Defines : <none>
129 * Return : 0 on success, 1 in case of an error
130 * Information : shuts down fifo structure, frees allocated memory
131 *
132 *******************************************************************************
133 */
134
135 int Shortint_fifo_exit(fifo_state_t *fifo_state);
136
137
138
139 /*
140 *******************************************************************************
141 *
142 * Function : Shortint_fifo_push
143 * In : elements_to_push vector containing the elements
144 * In num_elements_to_push number of the elements
145 * In/Out : fifo_state state variable
146 * Calls : fprintf, exit
147 * Tables : <none>
148 * Compile Defines : <none>
149 * Return : 0 on success, 1 in case of an error
150 * Information : pushes elements into the fifo
151 *
152 *******************************************************************************
153 */
154
155 int Shortint_fifo_push(fifo_state_t *fifo_state,
156 WORD16 *elements_to_push,
157 WORD32 num_elements_to_push);
158
159
160 /*
161 *******************************************************************************
162 *
163 * Function : Shortint_fifo_pop
164 * In : num_elements_to_pop number of the elements
165 * Out : popped_elements vector containing the elements
166 * In/Out : fifo_state state variable
167 * Calls : fprintf, exit
168 * Tables : <none>
169 * Compile Defines : <none>
170 * Return : 0 on success, 1 in case of an error
171 * Information : pops elements from the fifo
172 *
173 *******************************************************************************
174 */
175
176 int Shortint_fifo_pop(fifo_state_t *fifo_state,
177 WORD16 *popped_elements,
178 WORD32 num_elements_to_pop);
179
180
181 /*
182 *******************************************************************************
183 *
184 * Function : Shortint_fifo_peek
185 * In : num_elements_to_peek number of the elements
186 * Out : peeked_elements vector containing the elements
187 * In/Out : fifo_state state variable
188 * Calls : fprintf, exit
189 * Tables : <none>
190 * Compile Defines : <none>
191 * Return : 0 on success, 1 in case of an error
192 * Information : similar to pop, but elements are remaining in buffer
193 *
194 *******************************************************************************
195 */
196
197 int Shortint_fifo_peek(fifo_state_t *fifo_state,
198 WORD16 *peeked_elements,
199 WORD32 num_elements_to_peek);
200
201
202 /*
203 *******************************************************************************
204 *
205 * Function : Shortint_fifo_check
206 * In/Out : fifo_state state variable
207 * Calls : <none>
208 * Tables : <none>
209 * Compile Defines : <none>
210 * Return : number of elements in fifo
211 * Information : determines the number of valid elements in fifo
212 *
213 *******************************************************************************
214 */
215
216 WORD32 Shortint_fifo_check(fifo_state_t *fifo_state);
217
218 #endif