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timer_local.h
1 /*
2  * Timer interface - local header file
3  * Copyright (c) 2001 by Jaroslav Kysela <perex@perex.cz>
4  *
5  *
6  * This library is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU Lesser General Public License as
8  * published by the Free Software Foundation; either version 2.1 of
9  * the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  */
21 
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <limits.h>
25 #include "local.h"
26 
27 #ifndef DOC_HIDDEN
28 typedef struct {
29  int (*close)(snd_timer_t *timer);
30  int (*nonblock)(snd_timer_t *timer, int nonblock);
31  int (*async)(snd_timer_t *timer, int sig, pid_t pid);
32  int (*info)(snd_timer_t *timer, snd_timer_info_t *info);
33  int (*params)(snd_timer_t *timer, snd_timer_params_t *params);
34  int (*status)(snd_timer_t *timer, snd_timer_status_t *status);
35  int (*rt_start)(snd_timer_t *timer);
36  int (*rt_stop)(snd_timer_t *timer);
37  int (*rt_continue)(snd_timer_t *timer);
38  ssize_t (*read)(snd_timer_t *timer, void *buffer, size_t size);
39 } snd_timer_ops_t;
40 
41 struct _snd_timer {
42  unsigned int version;
43  void *dl_handle;
44  char *name;
45  snd_timer_type_t type;
46  int mode;
47  int poll_fd;
48  const snd_timer_ops_t *ops;
49  void *private_data;
50  struct list_head async_handlers;
51 };
52 
53 typedef struct {
54  int (*close)(snd_timer_query_t *timer);
55  int (*next_device)(snd_timer_query_t *timer, snd_timer_id_t *tid);
56  int (*info)(snd_timer_query_t *timer, snd_timer_ginfo_t *info);
57  int (*params)(snd_timer_query_t *timer, snd_timer_gparams_t *info);
58  int (*status)(snd_timer_query_t *timer, snd_timer_gstatus_t *info);
59 } snd_timer_query_ops_t;
60 
61 struct _snd_timer_query {
62  void *dl_handle;
63  char *name;
64  snd_timer_type_t type;
65  int mode;
66  int poll_fd;
67  const snd_timer_query_ops_t *ops;
68  void *private_data;
69 };
70 #endif /* DOC_HIDDEN */
71 
72 int snd_timer_hw_open(snd_timer_t **handle, const char *name, int dev_class, int dev_sclass, int card, int device, int subdevice, int mode);
73 
74 int snd_timer_query_hw_open(snd_timer_query_t **handle, const char *name, int mode);
75 
76 int snd_timer_async(snd_timer_t *timer, int sig, pid_t pid);