1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * OSS compatible sequencer driver 4 * 5 * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> 6 */ 7 8 #ifndef __SEQ_OSS_DEVICE_H 9 #define __SEQ_OSS_DEVICE_H 10 11 #include <linux/time.h> 12 #include <linux/wait.h> 13 #include <linux/slab.h> 14 #include <linux/sched/signal.h> 15 #include <sound/core.h> 16 #include <sound/seq_oss.h> 17 #include <sound/rawmidi.h> 18 #include <sound/seq_kernel.h> 19 #include <sound/info.h> 20 #include "../seq_clientmgr.h" 21 22 /* max. applications */ 23 #define SNDRV_SEQ_OSS_MAX_CLIENTS 16 24 #define SNDRV_SEQ_OSS_MAX_SYNTH_DEVS 16 25 #define SNDRV_SEQ_OSS_MAX_MIDI_DEVS 32 26 27 /* version */ 28 #define SNDRV_SEQ_OSS_MAJOR_VERSION 0 29 #define SNDRV_SEQ_OSS_MINOR_VERSION 1 30 #define SNDRV_SEQ_OSS_TINY_VERSION 8 31 #define SNDRV_SEQ_OSS_VERSION_STR "0.1.8" 32 33 /* device and proc interface name */ 34 #define SNDRV_SEQ_OSS_PROCNAME "oss" 35 36 37 /* 38 * type definitions 39 */ 40 41 typedef unsigned int reltime_t; 42 typedef unsigned int abstime_t; 43 44 45 /* 46 * synthesizer channel information 47 */ 48 struct seq_oss_chinfo { 49 int note, vel; 50 }; 51 52 /* 53 * synthesizer information 54 */ 55 struct seq_oss_synthinfo { 56 struct snd_seq_oss_arg arg; 57 struct seq_oss_chinfo *ch; 58 struct seq_oss_synth_sysex *sysex; 59 int nr_voices; 60 int opened; 61 int is_midi; 62 int midi_mapped; 63 }; 64 65 66 /* 67 * sequencer client information 68 */ 69 70 struct seq_oss_devinfo { 71 72 int index; /* application index */ 73 int cseq; /* sequencer client number */ 74 int port; /* sequencer port number */ 75 int queue; /* sequencer queue number */ 76 77 struct snd_seq_addr addr; /* address of this device */ 78 79 int seq_mode; /* sequencer mode */ 80 int file_mode; /* file access */ 81 82 /* midi device table */ 83 int max_mididev; 84 85 /* synth device table */ 86 int max_synthdev; 87 struct seq_oss_synthinfo synths[SNDRV_SEQ_OSS_MAX_SYNTH_DEVS]; 88 int synth_opened; 89 90 /* output queue */ 91 struct seq_oss_writeq *writeq; 92 93 /* midi input queue */ 94 struct seq_oss_readq *readq; 95 96 /* timer */ 97 struct seq_oss_timer *timer; 98 }; 99 100 101 /* 102 * function prototypes 103 */ 104 105 /* create/delete OSS sequencer client */ 106 int snd_seq_oss_create_client(void); 107 int snd_seq_oss_delete_client(void); 108 109 /* device file interface */ 110 int snd_seq_oss_open(struct file *file, int level); 111 void snd_seq_oss_release(struct seq_oss_devinfo *dp); 112 int snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long arg); 113 int snd_seq_oss_read(struct seq_oss_devinfo *dev, char __user *buf, int count); 114 int snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int count, struct file *opt); 115 __poll_t snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait); 116 117 void snd_seq_oss_reset(struct seq_oss_devinfo *dp); 118 119 /* */ 120 void snd_seq_oss_process_queue(struct seq_oss_devinfo *dp, abstime_t time); 121 122 123 /* proc interface */ 124 void snd_seq_oss_system_info_read(struct snd_info_buffer *buf); 125 void snd_seq_oss_midi_info_read(struct snd_info_buffer *buf); 126 void snd_seq_oss_synth_info_read(struct snd_info_buffer *buf); 127 void snd_seq_oss_readq_info_read(struct seq_oss_readq *q, struct snd_info_buffer *buf); 128 129 /* file mode macros */ 130 #define is_read_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_READ) 131 #define is_write_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_WRITE) 132 #define is_nonblock_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK) 133 134 /* dispatch event */ 135 static inline int 136 snd_seq_oss_dispatch(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int atomic, int hop) 137 { 138 return snd_seq_kernel_client_dispatch(dp->cseq, ev, atomic, hop); 139 } 140 141 /* ioctl for writeq */ 142 static inline int 143 snd_seq_oss_control(struct seq_oss_devinfo *dp, unsigned int type, void *arg) 144 { 145 int err; 146 147 snd_seq_client_ioctl_lock(dp->cseq); 148 err = snd_seq_kernel_client_ctl(dp->cseq, type, arg); 149 snd_seq_client_ioctl_unlock(dp->cseq); 150 return err; 151 } 152 153 /* fill the addresses in header */ 154 static inline void 155 snd_seq_oss_fill_addr(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, 156 int dest_client, int dest_port) 157 { 158 ev->queue = dp->queue; 159 ev->source = dp->addr; 160 ev->dest.client = dest_client; 161 ev->dest.port = dest_port; 162 } 163 164 165 /* misc. functions for proc interface */ 166 char *enabled_str(bool b); 167 168 #endif /* __SEQ_OSS_DEVICE_H */ 169