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 <sound/driver.h>
  25 #include <linux/time.h>
  26 #include <linux/wait.h>
  27 #include <linux/slab.h>
  28 #include <linux/sched.h>
  29 #include <sound/core.h>
  30 #include <sound/seq_oss.h>
  31 #include <sound/rawmidi.h>
  32 #include <sound/seq_kernel.h>
  33 #include <sound/info.h>
  34
  35 /* enable debug print */
  36 #define SNDRV_SEQ_OSS_DEBUG
  37
  38 /* max. applications */
  39 #define SNDRV_SEQ_OSS_MAX_CLIENTS       16
  40 #define SNDRV_SEQ_OSS_MAX_SYNTH_DEVS    16
  41 #define SNDRV_SEQ_OSS_MAX_MIDI_DEVS     32
  42
  43 /* version */
  44 #define SNDRV_SEQ_OSS_MAJOR_VERSION     0
  45 #define SNDRV_SEQ_OSS_MINOR_VERSION     1
  46 #define SNDRV_SEQ_OSS_TINY_VERSION      8
  47 #define SNDRV_SEQ_OSS_VERSION_STR       "0.1.8"
  48
  49 /* device and proc interface name */
  50 #define SNDRV_SEQ_OSS_DEVNAME           "seq_oss"
  51 #define SNDRV_SEQ_OSS_PROCNAME          "oss"
  52
  53
  54 /*
  55  * type definitions
  56  */
  57
  58 typedef struct seq_oss_devinfo_t seq_oss_devinfo_t;
  59 typedef struct seq_oss_writeq_t seq_oss_writeq_t;
  60 typedef struct seq_oss_readq_t seq_oss_readq_t;
  61 typedef struct seq_oss_timer_t seq_oss_timer_t;
  62 typedef struct seq_oss_synthinfo_t seq_oss_synthinfo_t;
  63 typedef struct seq_oss_synth_sysex_t seq_oss_synth_sysex_t;
  64 typedef struct seq_oss_chinfo_t seq_oss_chinfo_t;
  65 typedef unsigned int reltime_t;
  66 typedef unsigned int abstime_t;
  67 typedef union evrec_t evrec_t;
  68
  69
  70 /*
  71  * synthesizer channel information
  72  */
  73 struct seq_oss_chinfo_t {
  74         int note, vel;
  75 };
  76
  77 /*
  78  * synthesizer information
  79  */
  80 struct seq_oss_synthinfo_t {
  81         snd_seq_oss_arg_t arg;
  82         seq_oss_chinfo_t *ch;
  83         seq_oss_synth_sysex_t *sysex;
  84         int nr_voices;
  85         int opened;
  86         int is_midi;
  87         int midi_mapped;
  88 };
  89
  90
  91 /*
  92  * sequencer client information
  93  */
  94
  95 struct seq_oss_devinfo_t {
  96
  97         int index;      /* application index */
  98         int cseq;       /* sequencer client number */
  99         int port;       /* sequencer port number */
 100         int queue;      /* sequencer queue number */
 101
 102         snd_seq_addr_t addr;    /* address of this device */
 103
 104         int seq_mode;   /* sequencer mode */
 105         int file_mode;  /* file access */
 106
 107         /* midi device table */
 108         int max_mididev;
 109
 110         /* synth device table */
 111         int max_synthdev;
 112         seq_oss_synthinfo_t synths[SNDRV_SEQ_OSS_MAX_SYNTH_DEVS];
 113         int synth_opened;
 114
 115         /* output queue */
 116         seq_oss_writeq_t *writeq;
 117
 118         /* midi input queue */
 119         seq_oss_readq_t *readq;
 120
 121         /* timer */
 122         seq_oss_timer_t *timer;
 123 };
 124
 125
 126 /*
 127  * function prototypes
 128  */
 129
 130 /* create/delete OSS sequencer client */
 131 int snd_seq_oss_create_client(void);
 132 int snd_seq_oss_delete_client(void);
 133
 134 /* device file interface */
 135 int snd_seq_oss_open(struct file *file, int level);
 136 void snd_seq_oss_release(seq_oss_devinfo_t *dp);
 137 int snd_seq_oss_ioctl(seq_oss_devinfo_t *dp, unsigned int cmd, unsigned long arg);
 138 int snd_seq_oss_read(seq_oss_devinfo_t *dev, char __user *buf, int count);
 139 int snd_seq_oss_write(seq_oss_devinfo_t *dp, const char __user *buf, int count, struct file *opt);
 140 unsigned int snd_seq_oss_poll(seq_oss_devinfo_t *dp, struct file *file, poll_table * wait);
 141
 142 void snd_seq_oss_reset(seq_oss_devinfo_t *dp);
 143 void snd_seq_oss_drain_write(seq_oss_devinfo_t *dp);
 144
 145 /* */
 146 void snd_seq_oss_process_queue(seq_oss_devinfo_t *dp, abstime_t time);
 147
 148
 149 /* proc interface */
 150 void snd_seq_oss_system_info_read(snd_info_buffer_t *buf);
 151 void snd_seq_oss_midi_info_read(snd_info_buffer_t *buf);
 152 void snd_seq_oss_synth_info_read(snd_info_buffer_t *buf);
 153 void snd_seq_oss_readq_info_read(seq_oss_readq_t *q, snd_info_buffer_t *buf);
 154
 155 /* file mode macros */
 156 #define is_read_mode(mode)      ((mode) & SNDRV_SEQ_OSS_FILE_READ)
 157 #define is_write_mode(mode)     ((mode) & SNDRV_SEQ_OSS_FILE_WRITE)
 158 #define is_nonblock_mode(mode)  ((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK)
 159
 160 /* dispatch event */
 161 inline static int
 162 snd_seq_oss_dispatch(seq_oss_devinfo_t *dp, snd_seq_event_t *ev, int atomic, int hop)
 163 {
 164         return snd_seq_kernel_client_dispatch(dp->cseq, ev, atomic, hop);
 165 }
 166
 167 /* ioctl */
 168 inline static int
 169 snd_seq_oss_control(seq_oss_devinfo_t *dp, unsigned int type, void *arg)
 170 {
 171         return snd_seq_kernel_client_ctl(dp->cseq, type, arg);
 172 }
 173
 174 /* fill the addresses in header */
 175 inline static void
 176 snd_seq_oss_fill_addr(seq_oss_devinfo_t *dp, snd_seq_event_t *ev,
 177                      int dest_client, int dest_port)
 178 {
 179         ev->queue = dp->queue;
 180         ev->source = dp->addr;
 181         ev->dest.client = dest_client;
 182         ev->dest.port = dest_port;
 183 }
 184
 185
 186 /* misc. functions for proc interface */
 187 char *enabled_str(int bool);
 188
 189
 190 /* for debug */
 191 #ifdef SNDRV_SEQ_OSS_DEBUG
 192 extern int seq_oss_debug;
 193 #define debug_printk(x) do { if (seq_oss_debug > 0) snd_printk x; } while (0)
 194 #else
 195 #define debug_printk(x) /**/
 196 #endif
 197
 198 #endif /* __SEQ_OSS_DEVICE_H */