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