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1da177e4 LT |
1 | #ifndef __SOUND_SEQ_DEVICE_H |
2 | #define __SOUND_SEQ_DEVICE_H | |
3 | ||
4 | /* | |
5 | * ALSA sequencer device management | |
6 | * Copyright (c) 1999 by Takashi Iwai <tiwai@suse.de> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
1da177e4 LT |
24 | /* |
25 | * registered device information | |
26 | */ | |
27 | ||
28 | #define ID_LEN 32 | |
29 | ||
30 | /* status flag */ | |
31 | #define SNDRV_SEQ_DEVICE_FREE 0 | |
32 | #define SNDRV_SEQ_DEVICE_REGISTERED 1 | |
33 | ||
34 | struct snd_seq_device { | |
35 | /* device info */ | |
c7e0b5bf | 36 | struct snd_card *card; /* sound card */ |
1da177e4 LT |
37 | int device; /* device number */ |
38 | char id[ID_LEN]; /* driver id */ | |
39 | char name[80]; /* device name */ | |
40 | int argsize; /* size of the argument */ | |
41 | void *driver_data; /* private data for driver */ | |
42 | int status; /* flag - read only */ | |
43 | void *private_data; /* private data for the caller */ | |
c7e0b5bf | 44 | void (*private_free)(struct snd_seq_device *device); |
1da177e4 LT |
45 | struct list_head list; /* link to next device */ |
46 | }; | |
47 | ||
48 | ||
49 | /* driver operators | |
50 | * init_device: | |
51 | * Initialize the device with given parameters. | |
52 | * Typically, | |
53 | * 1. call snd_hwdep_new | |
54 | * 2. allocate private data and initialize it | |
55 | * 3. call snd_hwdep_register | |
56 | * 4. store the instance to dev->driver_data pointer. | |
57 | * | |
58 | * free_device: | |
59 | * Release the private data. | |
60 | * Typically, call snd_device_free(dev->card, dev->driver_data) | |
61 | */ | |
62 | struct snd_seq_dev_ops { | |
c7e0b5bf TI |
63 | int (*init_device)(struct snd_seq_device *dev); |
64 | int (*free_device)(struct snd_seq_device *dev); | |
1da177e4 LT |
65 | }; |
66 | ||
67 | /* | |
68 | * prototypes | |
69 | */ | |
70 | void snd_seq_device_load_drivers(void); | |
c7e0b5bf TI |
71 | int snd_seq_device_new(struct snd_card *card, int device, char *id, int argsize, struct snd_seq_device **result); |
72 | int snd_seq_device_register_driver(char *id, struct snd_seq_dev_ops *entry, int argsize); | |
1da177e4 LT |
73 | int snd_seq_device_unregister_driver(char *id); |
74 | ||
c7e0b5bf | 75 | #define SNDRV_SEQ_DEVICE_ARGPTR(dev) (void *)((char *)(dev) + sizeof(struct snd_seq_device)) |
1da177e4 LT |
76 | |
77 | ||
78 | /* | |
79 | * id strings for generic devices | |
80 | */ | |
81 | #define SNDRV_SEQ_DEV_ID_MIDISYNTH "seq-midi" | |
82 | #define SNDRV_SEQ_DEV_ID_OPL3 "opl3-synth" | |
83 | ||
1da177e4 | 84 | #endif /* __SOUND_SEQ_DEVICE_H */ |