#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 * */ /* * 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 */	struct snd_card *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)(struct snd_seq_device *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)(struct snd_seq_device *dev);	int (*free_device)(struct snd_seq_device *dev);}; /* * prototypes */void snd_seq_device_load_drivers(void);int snd_seq_device_new(struct snd_card *card, int device, char *id, int argsize, struct snd_seq_device **result);int snd_seq_device_register_driver(char *id, struct snd_seq_dev_ops *entry, int argsize);int snd_seq_device_unregister_driver(char *id); #define SNDRV_SEQ_DEVICE_ARGPTR(dev) (void *)((char *)(dev) + sizeof(struct snd_seq_device))  /* * 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 */