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#ifndef __SOUND_SEQ_DEVICE_H
#define __SOUND_SEQ_DEVICE_H
/*
* ALSA sequencer device management
* Copyright (c) 1999 by Takashi Iwai <tiwai@suse.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
typedef struct snd_seq_device snd_seq_device_t;
typedef struct snd_seq_dev_ops snd_seq_dev_ops_t;
/*
* registered device information
*/
#define ID_LEN 32
/* status flag */
#define SNDRV_SEQ_DEVICE_FREE 0
#define SNDRV_SEQ_DEVICE_REGISTERED 1
struct snd_seq_device {
/* device info */
snd_card_t *card; /* sound card */
int device; /* device number */
char id[ID_LEN]; /* driver id */
char name[80]; /* device name */
int argsize; /* size of the argument */
void *driver_data; /* private data for driver */
int status; /* flag - read only */
void *private_data; /* private data for the caller */
void (*private_free)(snd_seq_device_t *device);
struct list_head list; /* link to next device */
};
/* driver operators
* init_device:
* Initialize the device with given parameters.
* Typically,
* 1. call snd_hwdep_new
* 2. allocate private data and initialize it
* 3. call snd_hwdep_register
* 4. store the instance to dev->driver_data pointer.
*
* free_device:
* Release the private data.
* Typically, call snd_device_free(dev->card, dev->driver_data)
*/
struct snd_seq_dev_ops {
int (*init_device)(snd_seq_device_t *dev);
int (*free_device)(snd_seq_device_t *dev);
};
/*
* prototypes
*/
void snd_seq_device_load_drivers(void);
int snd_seq_device_new(snd_card_t *card, int device, char *id, int argsize, snd_seq_device_t **result);
int snd_seq_device_register_driver(char *id, snd_seq_dev_ops_t *entry, int argsize);
int snd_seq_device_unregister_driver(char *id);
#define SNDRV_SEQ_DEVICE_ARGPTR(dev) (void *)((char *)(dev) + sizeof(snd_seq_device_t))
/*
* id strings for generic devices
*/
#define SNDRV_SEQ_DEV_ID_MIDISYNTH "seq-midi"
#define SNDRV_SEQ_DEV_ID_OPL3 "opl3-synth"
#endif /* __SOUND_SEQ_DEVICE_H */
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