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 int nr_voices; 59 int opened; 60 int is_midi; 61 int midi_mapped; 62 }; 63 64 65 /* 66 * sequencer client information 67 */ 68 69 struct seq_oss_devinfo { 70 71 int index; /* application index */ 72 int cseq; /* sequencer client number */ 73 int port; /* sequencer port number */ 74 int queue; /* sequencer queue number */ 75 76 struct snd_seq_addr addr; /* address of this device */ 77 78 int seq_mode; /* sequencer mode */ 79 int file_mode; /* file access */ 80 81 /* midi device table */ 82 int max_mididev; 83 84 /* synth device table */ 85 int max_synthdev; 86 struct seq_oss_synthinfo synths[SNDRV_SEQ_OSS_MAX_SYNTH_DEVS]; 87 int synth_opened; 88 89 /* output queue */ 90 struct seq_oss_writeq *writeq; 91 92 /* midi input queue */ 93 struct seq_oss_readq *readq; 94 95 /* timer */ 96 struct seq_oss_timer *timer; 97 }; 98 99 100 /* 101 * function prototypes 102 */ 103 104 /* create/delete OSS sequencer client */ 105 int snd_seq_oss_create_client(void); 106 int snd_seq_oss_delete_client(void); 107 108 /* device file interface */ 109 int snd_seq_oss_open(struct file *file, int level); 110 void snd_seq_oss_release(struct seq_oss_devinfo *dp); 111 int snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long arg); 112 int snd_seq_oss_read(struct seq_oss_devinfo *dev, char __user *buf, int count); 113 int snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int count, struct file *opt); 114 __poll_t snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait); 115 116 void snd_seq_oss_reset(struct seq_oss_devinfo *dp); 117 118 /* proc interface */ 119 void snd_seq_oss_system_info_read(struct snd_info_buffer *buf); 120 void snd_seq_oss_midi_info_read(struct snd_info_buffer *buf); 121 void snd_seq_oss_synth_info_read(struct snd_info_buffer *buf); 122 void snd_seq_oss_readq_info_read(struct seq_oss_readq *q, struct snd_info_buffer *buf); 123 124 /* file mode macros */ 125 #define is_read_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_READ) 126 #define is_write_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_WRITE) 127 #define is_nonblock_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK) 128 129 /* dispatch event */ 130 static inline int 131 snd_seq_oss_dispatch(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int atomic, int hop) 132 { 133 return snd_seq_kernel_client_dispatch(dp->cseq, ev, atomic, hop); 134 } 135 136 /* ioctl for writeq */ 137 static inline int 138 snd_seq_oss_control(struct seq_oss_devinfo *dp, unsigned int type, void *arg) 139 { 140 int err; 141 142 snd_seq_client_ioctl_lock(dp->cseq); 143 err = snd_seq_kernel_client_ctl(dp->cseq, type, arg); 144 snd_seq_client_ioctl_unlock(dp->cseq); 145 return err; 146 } 147 148 /* fill the addresses in header */ 149 static inline void 150 snd_seq_oss_fill_addr(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, 151 int dest_client, int dest_port) 152 { 153 ev->queue = dp->queue; 154 ev->source = dp->addr; 155 ev->dest.client = dest_client; 156 ev->dest.port = dest_port; 157 } 158 159 #endif /* __SEQ_OSS_DEVICE_H */ 160