From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/sound/seq_device.h | 88 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 include/sound/seq_device.h (limited to 'include/sound/seq_device.h') diff --git a/include/sound/seq_device.h b/include/sound/seq_device.h new file mode 100644 index 00000000000..204ca540c28 --- /dev/null +++ b/include/sound/seq_device.h @@ -0,0 +1,88 @@ +#ifndef __SOUND_SEQ_DEVICE_H +#define __SOUND_SEQ_DEVICE_H + +/* + * ALSA sequencer device management + * Copyright (c) 1999 by Takashi Iwai + * + * 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 */ -- cgit v1.2.3