Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __SOUND_RAWMIDI_H |
| 2 | #define __SOUND_RAWMIDI_H |
| 3 | |
| 4 | /* |
| 5 | * Abstract layer for MIDI v1.0 stream |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 6 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #include <sound/asound.h> |
| 26 | #include <linux/interrupt.h> |
| 27 | #include <linux/spinlock.h> |
| 28 | #include <linux/wait.h> |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 29 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | |
| 31 | #if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE) |
| 32 | #include "seq_device.h" |
| 33 | #endif |
| 34 | |
| 35 | /* |
| 36 | * Raw MIDI interface |
| 37 | */ |
| 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #define SNDRV_RAWMIDI_DEVICES 8 |
| 40 | |
| 41 | #define SNDRV_RAWMIDI_LFLG_OUTPUT (1<<0) |
| 42 | #define SNDRV_RAWMIDI_LFLG_INPUT (1<<1) |
| 43 | #define SNDRV_RAWMIDI_LFLG_OPEN (3<<0) |
| 44 | #define SNDRV_RAWMIDI_LFLG_APPEND (1<<2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 46 | struct snd_rawmidi; |
| 47 | struct snd_rawmidi_substream; |
Clemens Ladisch | a7b928ac5 | 2006-05-02 16:22:12 +0200 | [diff] [blame] | 48 | struct snd_seq_port_info; |
Clemens Ladisch | 7584af1 | 2009-11-10 10:14:04 +0100 | [diff] [blame] | 49 | struct pid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 51 | struct snd_rawmidi_ops { |
| 52 | int (*open) (struct snd_rawmidi_substream * substream); |
| 53 | int (*close) (struct snd_rawmidi_substream * substream); |
| 54 | void (*trigger) (struct snd_rawmidi_substream * substream, int up); |
| 55 | void (*drain) (struct snd_rawmidi_substream * substream); |
| 56 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 58 | struct snd_rawmidi_global_ops { |
| 59 | int (*dev_register) (struct snd_rawmidi * rmidi); |
| 60 | int (*dev_unregister) (struct snd_rawmidi * rmidi); |
Clemens Ladisch | a7b928ac5 | 2006-05-02 16:22:12 +0200 | [diff] [blame] | 61 | void (*get_port_info)(struct snd_rawmidi *rmidi, int number, |
| 62 | struct snd_seq_port_info *info); |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 63 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 65 | struct snd_rawmidi_runtime { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | unsigned int drain: 1, /* drain stage */ |
| 67 | oss: 1; /* OSS compatible mode */ |
| 68 | /* midi stream buffer */ |
| 69 | unsigned char *buffer; /* buffer for MIDI data */ |
| 70 | size_t buffer_size; /* size of buffer */ |
| 71 | size_t appl_ptr; /* application pointer */ |
| 72 | size_t hw_ptr; /* hardware pointer */ |
| 73 | size_t avail_min; /* min avail for wakeup */ |
| 74 | size_t avail; /* max used buffer for wakeup */ |
| 75 | size_t xruns; /* over/underruns counter */ |
| 76 | /* misc */ |
| 77 | spinlock_t lock; |
| 78 | wait_queue_head_t sleep; |
| 79 | /* event handler (new bytes, input only) */ |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 80 | void (*event)(struct snd_rawmidi_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | /* defers calls to event [input] or ops->trigger [output] */ |
| 82 | struct tasklet_struct tasklet; |
| 83 | /* private data */ |
| 84 | void *private_data; |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 85 | void (*private_free)(struct snd_rawmidi_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | }; |
| 87 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 88 | struct snd_rawmidi_substream { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | struct list_head list; /* list of all substream for given stream */ |
| 90 | int stream; /* direction */ |
| 91 | int number; /* substream number */ |
| 92 | unsigned int opened: 1, /* open flag */ |
| 93 | append: 1, /* append flag (merge more streams) */ |
| 94 | active_sensing: 1; /* send active sensing when close */ |
| 95 | int use_count; /* use counter (for output) */ |
| 96 | size_t bytes; |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 97 | struct snd_rawmidi *rmidi; |
| 98 | struct snd_rawmidi_str *pstr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | char name[32]; |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 100 | struct snd_rawmidi_runtime *runtime; |
Clemens Ladisch | 7584af1 | 2009-11-10 10:14:04 +0100 | [diff] [blame] | 101 | struct pid *pid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | /* hardware layer */ |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 103 | struct snd_rawmidi_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | }; |
| 105 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 106 | struct snd_rawmidi_file { |
| 107 | struct snd_rawmidi *rmidi; |
| 108 | struct snd_rawmidi_substream *input; |
| 109 | struct snd_rawmidi_substream *output; |
| 110 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 112 | struct snd_rawmidi_str { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | unsigned int substream_count; |
| 114 | unsigned int substream_opened; |
| 115 | struct list_head substreams; |
| 116 | }; |
| 117 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 118 | struct snd_rawmidi { |
| 119 | struct snd_card *card; |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 120 | struct list_head list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | unsigned int device; /* device number */ |
| 122 | unsigned int info_flags; /* SNDRV_RAWMIDI_INFO_XXXX */ |
| 123 | char id[64]; |
| 124 | char name[80]; |
| 125 | |
| 126 | #ifdef CONFIG_SND_OSSEMUL |
| 127 | int ossreg; |
| 128 | #endif |
| 129 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 130 | struct snd_rawmidi_global_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 132 | struct snd_rawmidi_str streams[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
| 134 | void *private_data; |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 135 | void (*private_free) (struct snd_rawmidi *rmidi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 137 | struct mutex open_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | wait_queue_head_t open_wait; |
| 139 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 140 | struct snd_info_entry *dev; |
| 141 | struct snd_info_entry *proc_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
| 143 | #if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE) |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 144 | struct snd_seq_device *seq_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | #endif |
| 146 | }; |
| 147 | |
| 148 | /* main rawmidi functions */ |
| 149 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 150 | int snd_rawmidi_new(struct snd_card *card, char *id, int device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | int output_count, int input_count, |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 152 | struct snd_rawmidi **rmidi); |
| 153 | void snd_rawmidi_set_ops(struct snd_rawmidi *rmidi, int stream, |
| 154 | struct snd_rawmidi_ops *ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | |
| 156 | /* callbacks */ |
| 157 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 158 | void snd_rawmidi_receive_reset(struct snd_rawmidi_substream *substream); |
| 159 | int snd_rawmidi_receive(struct snd_rawmidi_substream *substream, |
| 160 | const unsigned char *buffer, int count); |
| 161 | void snd_rawmidi_transmit_reset(struct snd_rawmidi_substream *substream); |
| 162 | int snd_rawmidi_transmit_empty(struct snd_rawmidi_substream *substream); |
| 163 | int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream, |
| 164 | unsigned char *buffer, int count); |
| 165 | int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count); |
| 166 | int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream, |
| 167 | unsigned char *buffer, int count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
| 169 | /* main midi functions */ |
| 170 | |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 171 | int snd_rawmidi_info_select(struct snd_card *card, struct snd_rawmidi_info *info); |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 172 | int snd_rawmidi_kernel_open(struct snd_card *card, int device, int subdevice, |
| 173 | int mode, struct snd_rawmidi_file *rfile); |
Takashi Iwai | 48c9d41 | 2005-11-17 13:56:51 +0100 | [diff] [blame] | 174 | int snd_rawmidi_kernel_release(struct snd_rawmidi_file *rfile); |
| 175 | int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream, |
| 176 | struct snd_rawmidi_params *params); |
| 177 | int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream, |
| 178 | struct snd_rawmidi_params *params); |
| 179 | int snd_rawmidi_drop_output(struct snd_rawmidi_substream *substream); |
| 180 | int snd_rawmidi_drain_output(struct snd_rawmidi_substream *substream); |
| 181 | int snd_rawmidi_drain_input(struct snd_rawmidi_substream *substream); |
| 182 | long snd_rawmidi_kernel_read(struct snd_rawmidi_substream *substream, |
| 183 | unsigned char *buf, long count); |
| 184 | long snd_rawmidi_kernel_write(struct snd_rawmidi_substream *substream, |
| 185 | const unsigned char *buf, long count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
| 187 | #endif /* __SOUND_RAWMIDI_H */ |