sound/core/seq/oss/seq_oss_device.h

   1 /*
   2  * OSS compatible sequencer driver
   3  *
   4  * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  */
  20
  21 #ifndef __SEQ_OSS_DEVICE_H
  22 #define __SEQ_OSS_DEVICE_H
  23
  24 #include <linux/time.h>
  25 #include <linux/wait.h>
  26 #include <linux/slab.h>
  27 #include <linux/sched.h>
  28 #include <sound/core.h>
  29 #include <sound/seq_oss.h>
  30 #include <sound/rawmidi.h>
  31 #include <sound/seq_kernel.h>
  32 #include <sound/info.h>
  33
  34 /* enable debug print */
  35 #define SNDRV_SEQ_OSS_DEBUG
  36
  37 /* max. applications */
  38 #define SNDRV_SEQ_OSS_MAX_CLIENTS       16
  39 #define SNDRV_SEQ_OSS_MAX_SYNTH_DEVS    16
  40 #define SNDRV_SEQ_OSS_MAX_MIDI_DEVS     32
  41
  42 /* version */
  43 #define SNDRV_SEQ_OSS_MAJOR_VERSION     0
  44 #define SNDRV_SEQ_OSS_MINOR_VERSION     1
  45 #define SNDRV_SEQ_OSS_TINY_VERSION      8
  46 #define SNDRV_SEQ_OSS_VERSION_STR       "0.1.8"
  47
  48 /* device and proc interface name */
  49 #define SNDRV_SEQ_OSS_DEVNAME           "seq_oss"
  50 #define SNDRV_SEQ_OSS_PROCNAME          "oss"
  51
  52
  53 /*
  54  * type definitions
  55  */
  56
  57 typedef unsigned int reltime_t;
  58 typedef unsigned int abstime_t;
  59
  60
  61 /*
  62  * synthesizer channel information
  63  */
  64 struct seq_oss_chinfo {
  65         int note, vel;
  66 };
  67
  68 /*
  69  * synthesizer information
  70  */
  71 struct seq_oss_synthinfo {
  72         struct snd_seq_oss_arg arg;
  73         struct seq_oss_chinfo *ch;
  74         struct seq_oss_synth_sysex *sysex;
  75         int nr_voices;
  76         int opened;
  77         int is_midi;
  78         int midi_mapped;
  79 };
  80
  81
  82 /*
  83  * sequencer client information
  84  */
  85
  86 struct seq_oss_devinfo {
  87
  88         int index;      /* application index */
  89         int cseq;       /* sequencer client number */
  90         int port;       /* sequencer port number */
  91         int queue;      /* sequencer queue number */
  92
  93         struct snd_seq_addr addr;       /* address of this device */
  94
  95         int seq_mode;   /* sequencer mode */
  96         int file_mode;  /* file access */
  97
  98         /* midi device table */
  99         int max_mididev;
 100
 101         /* synth device table */
 102         int max_synthdev;
 103         struct seq_oss_synthinfo synths[SNDRV_SEQ_OSS_MAX_SYNTH_DEVS];
 104         int synth_opened;
 105
 106         /* output queue */
 107         struct seq_oss_writeq *writeq;
 108
 109         /* midi input queue */
 110         struct seq_oss_readq *readq;
 111
 112         /* timer */
 113         struct seq_oss_timer *timer;
 114 };
 115
 116
 117 /*
 118  * function prototypes
 119  */
 120
 121 /* create/delete OSS sequencer client */
 122 int snd_seq_oss_create_client(void);
 123 int snd_seq_oss_delete_client(void);
 124
 125 /* device file interface */
 126 int snd_seq_oss_open(struct file *file, int level);
 127 void snd_seq_oss_release(struct seq_oss_devinfo *dp);
 128 int snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long arg);
 129 int snd_seq_oss_read(struct seq_oss_devinfo *dev, char __user *buf, int count);
 130 int snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int count, struct file *opt);
 131 unsigned int snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait);
 132
 133 void snd_seq_oss_reset(struct seq_oss_devinfo *dp);
 134 void snd_seq_oss_drain_write(struct seq_oss_devinfo *dp);
 135
 136 /* */
 137 void snd_seq_oss_process_queue(struct seq_oss_devinfo *dp, abstime_t time);
 138
 139
 140 /* proc interface */
 141 void snd_seq_oss_system_info_read(struct snd_info_buffer *buf);
 142 void snd_seq_oss_midi_info_read(struct snd_info_buffer *buf);
 143 void snd_seq_oss_synth_info_read(struct snd_info_buffer *buf);
 144 void snd_seq_oss_readq_info_read(struct seq_oss_readq *q, struct snd_info_buffer *buf);
 145
 146 /* file mode macros */
 147 #define is_read_mode(mode)      ((mode) & SNDRV_SEQ_OSS_FILE_READ)
 148 #define is_write_mode(mode)     ((mode) & SNDRV_SEQ_OSS_FILE_WRITE)
 149 #define is_nonblock_mode(mode)  ((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK)
 150
 151 /* dispatch event */
 152 static inline int
 153 snd_seq_oss_dispatch(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int atomic, int hop)
 154 {
 155         return snd_seq_kernel_client_dispatch(dp->cseq, ev, atomic, hop);
 156 }
 157
 158 /* ioctl */
 159 static inline int
 160 snd_seq_oss_control(struct seq_oss_devinfo *dp, unsigned int type, void *arg)
 161 {
 162         return snd_seq_kernel_client_ctl(dp->cseq, type, arg);
 163 }
 164
 165 /* fill the addresses in header */
 166 static inline void
 167 snd_seq_oss_fill_addr(struct seq_oss_devinfo *dp, struct snd_seq_event *ev,
 168                      int dest_client, int dest_port)
 169 {
 170         ev->queue = dp->queue;
 171         ev->source = dp->addr;
 172         ev->dest.client = dest_client;
 173         ev->dest.port = dest_port;
 174 }
 175
 176
 177 /* misc. functions for proc interface */
 178 char *enabled_str(int bool);
 179
 180
 181 /* for debug */
 182 #ifdef SNDRV_SEQ_OSS_DEBUG
 183 extern int seq_oss_debug;
 184 #define debug_printk(x) do { if (seq_oss_debug > 0) snd_printk x; } while (0)
 185 #else
 186 #define debug_printk(x) /**/
 187 #endif
 188
 189 #endif /* __SEQ_OSS_DEVICE_H */