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TOMOYO Linux Cross Reference
Linux/sound/core/seq/oss/seq_oss_device.h

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  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 
135 /* */
136 void snd_seq_oss_process_queue(struct seq_oss_devinfo *dp, abstime_t time);
137 
138 
139 /* proc interface */
140 void snd_seq_oss_system_info_read(struct snd_info_buffer *buf);
141 void snd_seq_oss_midi_info_read(struct snd_info_buffer *buf);
142 void snd_seq_oss_synth_info_read(struct snd_info_buffer *buf);
143 void snd_seq_oss_readq_info_read(struct seq_oss_readq *q, struct snd_info_buffer *buf);
144 
145 /* file mode macros */
146 #define is_read_mode(mode)      ((mode) & SNDRV_SEQ_OSS_FILE_READ)
147 #define is_write_mode(mode)     ((mode) & SNDRV_SEQ_OSS_FILE_WRITE)
148 #define is_nonblock_mode(mode)  ((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK)
149 
150 /* dispatch event */
151 static inline int
152 snd_seq_oss_dispatch(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int atomic, int hop)
153 {
154         return snd_seq_kernel_client_dispatch(dp->cseq, ev, atomic, hop);
155 }
156 
157 /* ioctl */
158 static inline int
159 snd_seq_oss_control(struct seq_oss_devinfo *dp, unsigned int type, void *arg)
160 {
161         return snd_seq_kernel_client_ctl(dp->cseq, type, arg);
162 }
163 
164 /* fill the addresses in header */
165 static inline void
166 snd_seq_oss_fill_addr(struct seq_oss_devinfo *dp, struct snd_seq_event *ev,
167                      int dest_client, int dest_port)
168 {
169         ev->queue = dp->queue;
170         ev->source = dp->addr;
171         ev->dest.client = dest_client;
172         ev->dest.port = dest_port;
173 }
174 
175 
176 /* misc. functions for proc interface */
177 char *enabled_str(int bool);
178 
179 
180 /* for debug */
181 #ifdef SNDRV_SEQ_OSS_DEBUG
182 extern int seq_oss_debug;
183 #define debug_printk(x) do { if (seq_oss_debug > 0) snd_printd x; } while (0)
184 #else
185 #define debug_printk(x) /**/
186 #endif
187 
188 #endif /* __SEQ_OSS_DEVICE_H */
189 

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