/* SPDX-License-Identifier: GPL-2.0-or-later */
|
#ifndef __SOUND_SEQ_OSS_H
|
#define __SOUND_SEQ_OSS_H
|
|
/*
|
* OSS compatible sequencer driver
|
*
|
* Copyright (C) 1998,99 Takashi Iwai
|
*/
|
|
#include <sound/asequencer.h>
|
#include <sound/seq_kernel.h>
|
|
/*
|
* argument structure for synthesizer operations
|
*/
|
struct snd_seq_oss_arg {
|
/* given by OSS sequencer */
|
int app_index; /* application unique index */
|
int file_mode; /* file mode - see below */
|
int seq_mode; /* sequencer mode - see below */
|
|
/* following must be initialized in open callback */
|
struct snd_seq_addr addr; /* opened port address */
|
void *private_data; /* private data for lowlevel drivers */
|
|
/* note-on event passing mode: initially given by OSS seq,
|
* but configurable by drivers - see below
|
*/
|
int event_passing;
|
};
|
|
|
/*
|
* synthesizer operation callbacks
|
*/
|
struct snd_seq_oss_callback {
|
struct module *owner;
|
int (*open)(struct snd_seq_oss_arg *p, void *closure);
|
int (*close)(struct snd_seq_oss_arg *p);
|
int (*ioctl)(struct snd_seq_oss_arg *p, unsigned int cmd, unsigned long arg);
|
int (*load_patch)(struct snd_seq_oss_arg *p, int format, const char __user *buf, int offs, int count);
|
int (*reset)(struct snd_seq_oss_arg *p);
|
int (*raw_event)(struct snd_seq_oss_arg *p, unsigned char *data);
|
};
|
|
/* flag: file_mode */
|
#define SNDRV_SEQ_OSS_FILE_ACMODE 3
|
#define SNDRV_SEQ_OSS_FILE_READ 1
|
#define SNDRV_SEQ_OSS_FILE_WRITE 2
|
#define SNDRV_SEQ_OSS_FILE_NONBLOCK 4
|
|
/* flag: seq_mode */
|
#define SNDRV_SEQ_OSS_MODE_SYNTH 0
|
#define SNDRV_SEQ_OSS_MODE_MUSIC 1
|
|
/* flag: event_passing */
|
#define SNDRV_SEQ_OSS_PROCESS_EVENTS 0 /* key == 255 is processed as velocity change */
|
#define SNDRV_SEQ_OSS_PASS_EVENTS 1 /* pass all events to callback */
|
#define SNDRV_SEQ_OSS_PROCESS_KEYPRESS 2 /* key >= 128 will be processed as key-pressure */
|
|
/* default control rate: fixed */
|
#define SNDRV_SEQ_OSS_CTRLRATE 100
|
|
/* default max queue length: configurable by module option */
|
#define SNDRV_SEQ_OSS_MAX_QLEN 1024
|
|
|
/*
|
* data pointer to snd_seq_register_device
|
*/
|
struct snd_seq_oss_reg {
|
int type;
|
int subtype;
|
int nvoices;
|
struct snd_seq_oss_callback oper;
|
void *private_data;
|
};
|
|
/* device id */
|
#define SNDRV_SEQ_DEV_ID_OSS "seq-oss"
|
|
#endif /* __SOUND_SEQ_OSS_H */
|
