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/signal.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 /* max. applications */
  35 #define SNDRV_SEQ_OSS_MAX_CLIENTS       16
  36 #define SNDRV_SEQ_OSS_MAX_SYNTH_DEVS    16
  37 #define SNDRV_SEQ_OSS_MAX_MIDI_DEVS     32
  38
  39 /* version */
  40 #define SNDRV_SEQ_OSS_MAJOR_VERSION     0
  41 #define SNDRV_SEQ_OSS_MINOR_VERSION     1
  42 #define SNDRV_SEQ_OSS_TINY_VERSION      8
  43 #define SNDRV_SEQ_OSS_VERSION_STR       "0.1.8"
  44
  45 /* device and proc interface name */
  46 #define SNDRV_SEQ_OSS_PROCNAME          "oss"
  47
  48
  49 /*
  50  * type definitions
  51  */
  52
  53 typedef unsigned int reltime_t;
  54 typedef unsigned int abstime_t;
  55
  56
  57 /*
  58  * synthesizer channel information
  59  */
  60 struct seq_oss_chinfo {
  61         int note, vel;
  62 };
  63
  64 /*
  65  * synthesizer information
  66  */
  67 struct seq_oss_synthinfo {
  68         struct snd_seq_oss_arg arg;
  69         struct seq_oss_chinfo *ch;
  70         struct seq_oss_synth_sysex *sysex;
  71         int nr_voices;
  72         int opened;
  73         int is_midi;
  74         int midi_mapped;
  75 };
  76
  77
  78 /*
  79  * sequencer client information
  80  */
  81
  82 struct seq_oss_devinfo {
  83
  84         int index;      /* application index */
  85         int cseq;       /* sequencer client number */
  86         int port;       /* sequencer port number */
  87         int queue;      /* sequencer queue number */
  88
  89         struct snd_seq_addr addr;       /* address of this device */
  90
  91         int seq_mode;   /* sequencer mode */
  92         int file_mode;  /* file access */
  93
  94         /* midi device table */
  95         int max_mididev;
  96
  97         /* synth device table */
  98         int max_synthdev;
  99         struct seq_oss_synthinfo synths[SNDRV_SEQ_OSS_MAX_SYNTH_DEVS];
 100         int synth_opened;
 101
 102         /* output queue */
 103         struct seq_oss_writeq *writeq;
 104
 105         /* midi input queue */
 106         struct seq_oss_readq *readq;
 107
 108         /* timer */
 109         struct seq_oss_timer *timer;
 110 };
 111
 112
 113 /*
 114  * function prototypes
 115  */
 116
 117 /* create/delete OSS sequencer client */
 118 int snd_seq_oss_create_client(void);
 119 int snd_seq_oss_delete_client(void);
 120
 121 /* device file interface */
 122 int snd_seq_oss_open(struct file *file, int level);
 123 void snd_seq_oss_release(struct seq_oss_devinfo *dp);
 124 int snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long arg);
 125 int snd_seq_oss_read(struct seq_oss_devinfo *dev, char __user *buf, int count);
 126 int snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int count, struct file *opt);
 127 __poll_t snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait);
 128
 129 void snd_seq_oss_reset(struct seq_oss_devinfo *dp);
 130
 131 /* */
 132 void snd_seq_oss_process_queue(struct seq_oss_devinfo *dp, abstime_t time);
 133
 134
 135 /* proc interface */
 136 void snd_seq_oss_system_info_read(struct snd_info_buffer *buf);
 137 void snd_seq_oss_midi_info_read(struct snd_info_buffer *buf);
 138 void snd_seq_oss_synth_info_read(struct snd_info_buffer *buf);
 139 void snd_seq_oss_readq_info_read(struct seq_oss_readq *q, struct snd_info_buffer *buf);
 140
 141 /* file mode macros */
 142 #define is_read_mode(mode)      ((mode) & SNDRV_SEQ_OSS_FILE_READ)
 143 #define is_write_mode(mode)     ((mode) & SNDRV_SEQ_OSS_FILE_WRITE)
 144 #define is_nonblock_mode(mode)  ((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK)
 145
 146 /* dispatch event */
 147 static inline int
 148 snd_seq_oss_dispatch(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int atomic, int hop)
 149 {
 150         return snd_seq_kernel_client_dispatch(dp->cseq, ev, atomic, hop);
 151 }
 152
 153 /* ioctl */
 154 static inline int
 155 snd_seq_oss_control(struct seq_oss_devinfo *dp, unsigned int type, void *arg)
 156 {
 157         return snd_seq_kernel_client_ctl(dp->cseq, type, arg);
 158 }
 159
 160 /* fill the addresses in header */
 161 static inline void
 162 snd_seq_oss_fill_addr(struct seq_oss_devinfo *dp, struct snd_seq_event *ev,
 163                      int dest_client, int dest_port)
 164 {
 165         ev->queue = dp->queue;
 166         ev->source = dp->addr;
 167         ev->dest.client = dest_client;
 168         ev->dest.port = dest_port;
 169 }
 170
 171
 172 /* misc. functions for proc interface */
 173 char *enabled_str(int bool);
 174
 175 #endif /* __SEQ_OSS_DEVICE_H */