include/sound/seq_oss.h

   1 #ifndef __SOUND_SEQ_OSS_H
   2 #define __SOUND_SEQ_OSS_H
   3
   4 /*
   5  * OSS compatible sequencer driver
   6  *
   7  * Copyright (C) 1998,99 Takashi Iwai
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22  */
  23
  24 #include "asequencer.h"
  25 #include "seq_kernel.h"
  26
  27 /*
  28  * argument structure for synthesizer operations
  29  */
  30 struct snd_seq_oss_arg {
  31         /* given by OSS sequencer */
  32         int app_index;  /* application unique index */
  33         int file_mode;  /* file mode - see below */
  34         int seq_mode;   /* sequencer mode - see below */
  35
  36         /* following must be initialized in open callback */
  37         struct snd_seq_addr addr;       /* opened port address */
  38         void *private_data;     /* private data for lowlevel drivers */
  39
  40         /* note-on event passing mode: initially given by OSS seq,
  41          * but configurable by drivers - see below
  42          */
  43         int event_passing;
  44 };
  45
  46
  47 /*
  48  * synthesizer operation callbacks
  49  */
  50 struct snd_seq_oss_callback {
  51         struct module *owner;
  52         int (*open)(struct snd_seq_oss_arg *p, void *closure);
  53         int (*close)(struct snd_seq_oss_arg *p);
  54         int (*ioctl)(struct snd_seq_oss_arg *p, unsigned int cmd, unsigned long arg);
  55         int (*load_patch)(struct snd_seq_oss_arg *p, int format, const char __user *buf, int offs, int count);
  56         int (*reset)(struct snd_seq_oss_arg *p);
  57         int (*raw_event)(struct snd_seq_oss_arg *p, unsigned char *data);
  58 };
  59
  60 /* flag: file_mode */
  61 #define SNDRV_SEQ_OSS_FILE_ACMODE               3
  62 #define SNDRV_SEQ_OSS_FILE_READ         1
  63 #define SNDRV_SEQ_OSS_FILE_WRITE                2
  64 #define SNDRV_SEQ_OSS_FILE_NONBLOCK     4
  65
  66 /* flag: seq_mode */
  67 #define SNDRV_SEQ_OSS_MODE_SYNTH                0
  68 #define SNDRV_SEQ_OSS_MODE_MUSIC                1
  69
  70 /* flag: event_passing */
  71 #define SNDRV_SEQ_OSS_PROCESS_EVENTS    0       /* key == 255 is processed as velocity change */
  72 #define SNDRV_SEQ_OSS_PASS_EVENTS               1       /* pass all events to callback */
  73 #define SNDRV_SEQ_OSS_PROCESS_KEYPRESS  2       /* key >= 128 will be processed as key-pressure */
  74
  75 /* default control rate: fixed */
  76 #define SNDRV_SEQ_OSS_CTRLRATE          100
  77
  78 /* default max queue length: configurable by module option */
  79 #define SNDRV_SEQ_OSS_MAX_QLEN          1024
  80
  81
  82 /*
  83  * data pointer to snd_seq_register_device
  84  */
  85 struct snd_seq_oss_reg {
  86         int type;
  87         int subtype;
  88         int nvoices;
  89         struct snd_seq_oss_callback oper;
  90         void *private_data;
  91 };
  92
  93 /* device id */
  94 #define SNDRV_SEQ_DEV_ID_OSS            "seq-oss"
  95
  96 #endif /* __SOUND_SEQ_OSS_H */