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  * type definitions
  29  */
  30 typedef struct snd_seq_oss_arg_t snd_seq_oss_arg_t;
  31 typedef struct snd_seq_oss_callback_t snd_seq_oss_callback_t;
  32
  33 /*
  34  * argument structure for synthesizer operations
  35  */
  36 struct snd_seq_oss_arg_t {
  37         /* given by OSS sequencer */
  38         int app_index;  /* application unique index */
  39         int file_mode;  /* file mode - see below */
  40         int seq_mode;   /* sequencer mode - see below */
  41
  42         /* following must be initialized in open callback */
  43         snd_seq_addr_t addr;    /* opened port address */
  44         void *private_data;     /* private data for lowlevel drivers */
  45
  46         /* note-on event passing mode: initially given by OSS seq,
  47          * but configurable by drivers - see below
  48          */
  49         int event_passing;
  50 };
  51
  52
  53 /*
  54  * synthesizer operation callbacks
  55  */
  56 struct snd_seq_oss_callback_t {
  57         struct module *owner;
  58         int (*open)(snd_seq_oss_arg_t *p, void *closure);
  59         int (*close)(snd_seq_oss_arg_t *p);
  60         int (*ioctl)(snd_seq_oss_arg_t *p, unsigned int cmd, unsigned long arg);
  61         int (*load_patch)(snd_seq_oss_arg_t *p, int format, const char __user *buf, int offs, int count);
  62         int (*reset)(snd_seq_oss_arg_t *p);
  63         int (*raw_event)(snd_seq_oss_arg_t *p, unsigned char *data);
  64 };
  65
  66 /* flag: file_mode */
  67 #define SNDRV_SEQ_OSS_FILE_ACMODE               3
  68 #define SNDRV_SEQ_OSS_FILE_READ         1
  69 #define SNDRV_SEQ_OSS_FILE_WRITE                2
  70 #define SNDRV_SEQ_OSS_FILE_NONBLOCK     4
  71
  72 /* flag: seq_mode */
  73 #define SNDRV_SEQ_OSS_MODE_SYNTH                0
  74 #define SNDRV_SEQ_OSS_MODE_MUSIC                1
  75
  76 /* flag: event_passing */
  77 #define SNDRV_SEQ_OSS_PROCESS_EVENTS    0       /* key == 255 is processed as velocity change */
  78 #define SNDRV_SEQ_OSS_PASS_EVENTS               1       /* pass all events to callback */
  79 #define SNDRV_SEQ_OSS_PROCESS_KEYPRESS  2       /* key >= 128 will be processed as key-pressure */
  80
  81 /* default control rate: fixed */
  82 #define SNDRV_SEQ_OSS_CTRLRATE          100
  83
  84 /* default max queue length: configurable by module option */
  85 #define SNDRV_SEQ_OSS_MAX_QLEN          1024
  86
  87
  88 /*
  89  * data pointer to snd_seq_register_device
  90  */
  91 typedef struct snd_seq_oss_reg {
  92         int type;
  93         int subtype;
  94         int nvoices;
  95         snd_seq_oss_callback_t oper;
  96         void *private_data;
  97 } snd_seq_oss_reg_t;
  98
  99 /* device id */
 100 #define SNDRV_SEQ_DEV_ID_OSS            "seq-oss"
 101
 102 #endif /* __SOUND_SEQ_OSS_H */