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1/* SPDX-License-Identifier: GPL-2.0-or-later */2#ifndef __SOUND_SEQ_OSS_H3#define __SOUND_SEQ_OSS_H4 5/*6 * OSS compatible sequencer driver7 *8 * Copyright (C) 1998,99 Takashi Iwai9 */10 11#include <sound/asequencer.h>12#include <sound/seq_kernel.h>13 14/*15 * argument structure for synthesizer operations16 */17struct snd_seq_oss_arg {18 /* given by OSS sequencer */19 int app_index; /* application unique index */20 int file_mode; /* file mode - see below */21 int seq_mode; /* sequencer mode - see below */22 23 /* following must be initialized in open callback */24 struct snd_seq_addr addr; /* opened port address */25 void *private_data; /* private data for lowlevel drivers */26 27 /* note-on event passing mode: initially given by OSS seq,28 * but configurable by drivers - see below29 */30 int event_passing;31};32 33 34/*35 * synthesizer operation callbacks36 */37struct snd_seq_oss_callback {38 struct module *owner;39 int (*open)(struct snd_seq_oss_arg *p, void *closure);40 int (*close)(struct snd_seq_oss_arg *p);41 int (*ioctl)(struct snd_seq_oss_arg *p, unsigned int cmd, unsigned long arg);42 int (*load_patch)(struct snd_seq_oss_arg *p, int format, const char __user *buf, int offs, int count);43 int (*reset)(struct snd_seq_oss_arg *p);44 int (*raw_event)(struct snd_seq_oss_arg *p, unsigned char *data);45};46 47/* flag: file_mode */48#define SNDRV_SEQ_OSS_FILE_ACMODE 349#define SNDRV_SEQ_OSS_FILE_READ 150#define SNDRV_SEQ_OSS_FILE_WRITE 251#define SNDRV_SEQ_OSS_FILE_NONBLOCK 452 53/* flag: seq_mode */54#define SNDRV_SEQ_OSS_MODE_SYNTH 055#define SNDRV_SEQ_OSS_MODE_MUSIC 156 57/* flag: event_passing */58#define SNDRV_SEQ_OSS_PROCESS_EVENTS 0 /* key == 255 is processed as velocity change */59#define SNDRV_SEQ_OSS_PASS_EVENTS 1 /* pass all events to callback */60#define SNDRV_SEQ_OSS_PROCESS_KEYPRESS 2 /* key >= 128 will be processed as key-pressure */61 62/* default control rate: fixed */63#define SNDRV_SEQ_OSS_CTRLRATE 10064 65/* default max queue length: configurable by module option */66#define SNDRV_SEQ_OSS_MAX_QLEN 102467 68 69/*70 * data pointer to snd_seq_register_device71 */72struct snd_seq_oss_reg {73 int type;74 int subtype;75 int nvoices;76 struct snd_seq_oss_callback oper;77 void *private_data;78};79 80/* device id */81#define SNDRV_SEQ_DEV_ID_OSS "seq-oss"82 83#endif /* __SOUND_SEQ_OSS_H */84