diff options
Diffstat (limited to 'kernel/include/sound/seq_oss.h')
| -rw-r--r-- | kernel/include/sound/seq_oss.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/kernel/include/sound/seq_oss.h b/kernel/include/sound/seq_oss.h new file mode 100644 index 000000000..d0b27ec6f --- /dev/null +++ b/kernel/include/sound/seq_oss.h @@ -0,0 +1,96 @@ +#ifndef __SOUND_SEQ_OSS_H +#define __SOUND_SEQ_OSS_H + +/* + * OSS compatible sequencer driver + * + * Copyright (C) 1998,99 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 + */ + +#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 */ |