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usr
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linux-headers-6.8.0-88-generic
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include
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sound
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Filename :
seq_oss.h
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/* 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 */