11da177e4SLinus Torvalds #ifndef __SOUND_RAWMIDI_H 21da177e4SLinus Torvalds #define __SOUND_RAWMIDI_H 31da177e4SLinus Torvalds 41da177e4SLinus Torvalds /* 51da177e4SLinus Torvalds * Abstract layer for MIDI v1.0 stream 61da177e4SLinus Torvalds * Copyright (c) by Jaroslav Kysela <perex@suse.cz> 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify 101da177e4SLinus Torvalds * it under the terms of the GNU General Public License as published by 111da177e4SLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 121da177e4SLinus Torvalds * (at your option) any later version. 131da177e4SLinus Torvalds * 141da177e4SLinus Torvalds * This program is distributed in the hope that it will be useful, 151da177e4SLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 161da177e4SLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 171da177e4SLinus Torvalds * GNU General Public License for more details. 181da177e4SLinus Torvalds * 191da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License 201da177e4SLinus Torvalds * along with this program; if not, write to the Free Software 211da177e4SLinus Torvalds * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 221da177e4SLinus Torvalds * 231da177e4SLinus Torvalds */ 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds #include <sound/asound.h> 261da177e4SLinus Torvalds #include <linux/interrupt.h> 271da177e4SLinus Torvalds #include <linux/spinlock.h> 281da177e4SLinus Torvalds #include <linux/wait.h> 291da177e4SLinus Torvalds #include <asm/semaphore.h> 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds #if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE) 321da177e4SLinus Torvalds #include "seq_device.h" 331da177e4SLinus Torvalds #endif 341da177e4SLinus Torvalds 351da177e4SLinus Torvalds /* 361da177e4SLinus Torvalds * Raw MIDI interface 371da177e4SLinus Torvalds */ 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds typedef enum sndrv_rawmidi_stream snd_rawmidi_stream_t; 401da177e4SLinus Torvalds typedef struct sndrv_rawmidi_info snd_rawmidi_info_t; 411da177e4SLinus Torvalds typedef struct sndrv_rawmidi_params snd_rawmidi_params_t; 421da177e4SLinus Torvalds typedef struct sndrv_rawmidi_status snd_rawmidi_status_t; 431da177e4SLinus Torvalds 441da177e4SLinus Torvalds #define SNDRV_RAWMIDI_DEVICES 8 451da177e4SLinus Torvalds 461da177e4SLinus Torvalds #define SNDRV_RAWMIDI_LFLG_OUTPUT (1<<0) 471da177e4SLinus Torvalds #define SNDRV_RAWMIDI_LFLG_INPUT (1<<1) 481da177e4SLinus Torvalds #define SNDRV_RAWMIDI_LFLG_OPEN (3<<0) 491da177e4SLinus Torvalds #define SNDRV_RAWMIDI_LFLG_APPEND (1<<2) 501da177e4SLinus Torvalds #define SNDRV_RAWMIDI_LFLG_NOOPENLOCK (1<<3) 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds typedef struct _snd_rawmidi_runtime snd_rawmidi_runtime_t; 531da177e4SLinus Torvalds typedef struct _snd_rawmidi_substream snd_rawmidi_substream_t; 541da177e4SLinus Torvalds typedef struct _snd_rawmidi_str snd_rawmidi_str_t; 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds typedef struct _snd_rawmidi_ops { 571da177e4SLinus Torvalds int (*open) (snd_rawmidi_substream_t * substream); 581da177e4SLinus Torvalds int (*close) (snd_rawmidi_substream_t * substream); 591da177e4SLinus Torvalds void (*trigger) (snd_rawmidi_substream_t * substream, int up); 601da177e4SLinus Torvalds void (*drain) (snd_rawmidi_substream_t * substream); 611da177e4SLinus Torvalds } snd_rawmidi_ops_t; 621da177e4SLinus Torvalds 631da177e4SLinus Torvalds typedef struct _snd_rawmidi_global_ops { 641da177e4SLinus Torvalds int (*dev_register) (snd_rawmidi_t * rmidi); 651da177e4SLinus Torvalds int (*dev_unregister) (snd_rawmidi_t * rmidi); 661da177e4SLinus Torvalds } snd_rawmidi_global_ops_t; 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds struct _snd_rawmidi_runtime { 691da177e4SLinus Torvalds unsigned int drain: 1, /* drain stage */ 701da177e4SLinus Torvalds oss: 1; /* OSS compatible mode */ 711da177e4SLinus Torvalds /* midi stream buffer */ 721da177e4SLinus Torvalds unsigned char *buffer; /* buffer for MIDI data */ 731da177e4SLinus Torvalds size_t buffer_size; /* size of buffer */ 741da177e4SLinus Torvalds size_t appl_ptr; /* application pointer */ 751da177e4SLinus Torvalds size_t hw_ptr; /* hardware pointer */ 761da177e4SLinus Torvalds size_t avail_min; /* min avail for wakeup */ 771da177e4SLinus Torvalds size_t avail; /* max used buffer for wakeup */ 781da177e4SLinus Torvalds size_t xruns; /* over/underruns counter */ 791da177e4SLinus Torvalds /* misc */ 801da177e4SLinus Torvalds spinlock_t lock; 811da177e4SLinus Torvalds wait_queue_head_t sleep; 821da177e4SLinus Torvalds /* event handler (new bytes, input only) */ 831da177e4SLinus Torvalds void (*event)(snd_rawmidi_substream_t *substream); 841da177e4SLinus Torvalds /* defers calls to event [input] or ops->trigger [output] */ 851da177e4SLinus Torvalds struct tasklet_struct tasklet; 861da177e4SLinus Torvalds /* private data */ 871da177e4SLinus Torvalds void *private_data; 881da177e4SLinus Torvalds void (*private_free)(snd_rawmidi_substream_t *substream); 891da177e4SLinus Torvalds }; 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds struct _snd_rawmidi_substream { 921da177e4SLinus Torvalds struct list_head list; /* list of all substream for given stream */ 931da177e4SLinus Torvalds int stream; /* direction */ 941da177e4SLinus Torvalds int number; /* substream number */ 951da177e4SLinus Torvalds unsigned int opened: 1, /* open flag */ 961da177e4SLinus Torvalds append: 1, /* append flag (merge more streams) */ 971da177e4SLinus Torvalds active_sensing: 1; /* send active sensing when close */ 981da177e4SLinus Torvalds int use_count; /* use counter (for output) */ 991da177e4SLinus Torvalds size_t bytes; 1001da177e4SLinus Torvalds snd_rawmidi_t *rmidi; 1011da177e4SLinus Torvalds snd_rawmidi_str_t *pstr; 1021da177e4SLinus Torvalds char name[32]; 1031da177e4SLinus Torvalds snd_rawmidi_runtime_t *runtime; 1041da177e4SLinus Torvalds /* hardware layer */ 1051da177e4SLinus Torvalds snd_rawmidi_ops_t *ops; 1061da177e4SLinus Torvalds }; 1071da177e4SLinus Torvalds 1081da177e4SLinus Torvalds typedef struct _snd_rawmidi_file { 1091da177e4SLinus Torvalds snd_rawmidi_t *rmidi; 1101da177e4SLinus Torvalds snd_rawmidi_substream_t *input; 1111da177e4SLinus Torvalds snd_rawmidi_substream_t *output; 1121da177e4SLinus Torvalds } snd_rawmidi_file_t; 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds struct _snd_rawmidi_str { 1151da177e4SLinus Torvalds unsigned int substream_count; 1161da177e4SLinus Torvalds unsigned int substream_opened; 1171da177e4SLinus Torvalds struct list_head substreams; 1181da177e4SLinus Torvalds }; 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds struct _snd_rawmidi { 1211da177e4SLinus Torvalds snd_card_t *card; 1221da177e4SLinus Torvalds 1231da177e4SLinus Torvalds unsigned int device; /* device number */ 1241da177e4SLinus Torvalds unsigned int info_flags; /* SNDRV_RAWMIDI_INFO_XXXX */ 1251da177e4SLinus Torvalds char id[64]; 1261da177e4SLinus Torvalds char name[80]; 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvalds #ifdef CONFIG_SND_OSSEMUL 1291da177e4SLinus Torvalds int ossreg; 1301da177e4SLinus Torvalds #endif 1311da177e4SLinus Torvalds 1321da177e4SLinus Torvalds snd_rawmidi_global_ops_t *ops; 1331da177e4SLinus Torvalds 1341da177e4SLinus Torvalds snd_rawmidi_str_t streams[2]; 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds void *private_data; 1371da177e4SLinus Torvalds void (*private_free) (snd_rawmidi_t *rmidi); 1381da177e4SLinus Torvalds 1391da177e4SLinus Torvalds struct semaphore open_mutex; 1401da177e4SLinus Torvalds wait_queue_head_t open_wait; 1411da177e4SLinus Torvalds 1421da177e4SLinus Torvalds snd_info_entry_t *dev; 1431da177e4SLinus Torvalds snd_info_entry_t *proc_entry; 1441da177e4SLinus Torvalds 1451da177e4SLinus Torvalds #if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE) 1461da177e4SLinus Torvalds snd_seq_device_t *seq_dev; 1471da177e4SLinus Torvalds #endif 1481da177e4SLinus Torvalds }; 1491da177e4SLinus Torvalds 1501da177e4SLinus Torvalds /* main rawmidi functions */ 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds int snd_rawmidi_new(snd_card_t * card, char *id, int device, 1531da177e4SLinus Torvalds int output_count, int input_count, 1541da177e4SLinus Torvalds snd_rawmidi_t ** rmidi); 1551da177e4SLinus Torvalds void snd_rawmidi_set_ops(snd_rawmidi_t * rmidi, int stream, snd_rawmidi_ops_t * ops); 1561da177e4SLinus Torvalds 1571da177e4SLinus Torvalds /* callbacks */ 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds void snd_rawmidi_receive_reset(snd_rawmidi_substream_t * substream); 1601da177e4SLinus Torvalds int snd_rawmidi_receive(snd_rawmidi_substream_t * substream, const unsigned char *buffer, int count); 1611da177e4SLinus Torvalds void snd_rawmidi_transmit_reset(snd_rawmidi_substream_t * substream); 1621da177e4SLinus Torvalds int snd_rawmidi_transmit_empty(snd_rawmidi_substream_t * substream); 1631da177e4SLinus Torvalds int snd_rawmidi_transmit_peek(snd_rawmidi_substream_t * substream, unsigned char *buffer, int count); 1641da177e4SLinus Torvalds int snd_rawmidi_transmit_ack(snd_rawmidi_substream_t * substream, int count); 1651da177e4SLinus Torvalds int snd_rawmidi_transmit(snd_rawmidi_substream_t * substream, unsigned char *buffer, int count); 1661da177e4SLinus Torvalds 1671da177e4SLinus Torvalds /* main midi functions */ 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds int snd_rawmidi_info_select(snd_card_t *card, snd_rawmidi_info_t *info); 1701da177e4SLinus Torvalds int snd_rawmidi_kernel_open(int cardnum, int device, int subdevice, int mode, snd_rawmidi_file_t * rfile); 1711da177e4SLinus Torvalds int snd_rawmidi_kernel_release(snd_rawmidi_file_t * rfile); 1721da177e4SLinus Torvalds int snd_rawmidi_output_params(snd_rawmidi_substream_t * substream, snd_rawmidi_params_t * params); 1731da177e4SLinus Torvalds int snd_rawmidi_input_params(snd_rawmidi_substream_t * substream, snd_rawmidi_params_t * params); 1741da177e4SLinus Torvalds int snd_rawmidi_drop_output(snd_rawmidi_substream_t * substream); 1751da177e4SLinus Torvalds int snd_rawmidi_drain_output(snd_rawmidi_substream_t * substream); 1761da177e4SLinus Torvalds int snd_rawmidi_drain_input(snd_rawmidi_substream_t * substream); 1771da177e4SLinus Torvalds long snd_rawmidi_kernel_read(snd_rawmidi_substream_t * substream, unsigned char *buf, long count); 1781da177e4SLinus Torvalds long snd_rawmidi_kernel_write(snd_rawmidi_substream_t * substream, const unsigned char *buf, long count); 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds #endif /* __SOUND_RAWMIDI_H */ 181