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