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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/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 */
176 

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