xref: /freebsd/sys/sys/soundcard.h (revision 39beb93c3f8bdbf72a61fda42300b5ebed7390c8)
1 /*
2  * soundcard.h
3  */
4 
5 /*-
6  * Copyright by Hannu Savolainen 1993 / 4Front Technologies 1993-2006
7  * Modified for the new FreeBSD sound driver by Luigi Rizzo, 1997
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above
15  *    copyright notice, this list of conditions and the following
16  *    disclaimer in the documentation and/or other materials provided
17  *    with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
22  * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR
23  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
26  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
27  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
29  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30  * POSSIBILITY OF SUCH DAMAGE.
31  *
32  * $FreeBSD$
33  */
34 
35 /*
36  * Unless coordinating changes with 4Front Technologies, do NOT make any
37  * modifications to ioctl commands, types, etc. that would break
38  * compatibility with the OSS API.
39  */
40 
41 #ifndef _SYS_SOUNDCARD_H_
42 #define _SYS_SOUNDCARD_H_
43  /*
44   * If you make modifications to this file, please contact me before
45   * distributing the modified version. There is already enough
46   * diversity in the world.
47   *
48   * Regards,
49   * Hannu Savolainen
50   * hannu@voxware.pp.fi
51   *
52   **********************************************************************
53   * PS.	The Hacker's Guide to VoxWare available from
54   *     nic.funet.fi:pub/Linux/ALPHA/sound. The file is
55   *	snd-sdk-doc-0.1.ps.gz (gzipped postscript). It contains
56   *	some useful information about programming with VoxWare.
57   *	(NOTE! The pub/Linux/ALPHA/ directories are hidden. You have
58   *	to cd inside them before the files are accessible.)
59   **********************************************************************
60   */
61 
62 /*
63  * SOUND_VERSION is only used by the voxware driver. Hopefully apps
64  * should not depend on it, but rather look at the capabilities
65  * of the driver in the kernel!
66  */
67 #define SOUND_VERSION  301
68 #define VOXWARE		/* does this have any use ? */
69 
70 /*
71  * Supported card ID numbers (Should be somewhere else? We keep
72  * them here just for compativility with the old driver, but these
73  * constants are of little or no use).
74  */
75 
76 #define SNDCARD_ADLIB          1
77 #define SNDCARD_SB             2
78 #define SNDCARD_PAS            3
79 #define SNDCARD_GUS            4
80 #define SNDCARD_MPU401         5
81 #define SNDCARD_SB16           6
82 #define SNDCARD_SB16MIDI       7
83 #define SNDCARD_UART6850       8
84 #define SNDCARD_GUS16          9
85 #define SNDCARD_MSS            10
86 #define SNDCARD_PSS            11
87 #define SNDCARD_SSCAPE         12
88 #define SNDCARD_PSS_MPU        13
89 #define SNDCARD_PSS_MSS        14
90 #define SNDCARD_SSCAPE_MSS     15
91 #define SNDCARD_TRXPRO         16
92 #define SNDCARD_TRXPRO_SB      17
93 #define SNDCARD_TRXPRO_MPU     18
94 #define SNDCARD_MAD16          19
95 #define SNDCARD_MAD16_MPU      20
96 #define SNDCARD_CS4232         21
97 #define SNDCARD_CS4232_MPU     22
98 #define SNDCARD_MAUI           23
99 #define SNDCARD_PSEUDO_MSS     24
100 #define SNDCARD_AWE32          25
101 #define SNDCARD_NSS            26
102 #define SNDCARD_UART16550      27
103 #define SNDCARD_OPL            28
104 
105 #include <sys/types.h>
106 #include <machine/endian.h>
107 #ifndef _IOWR
108 #include <sys/ioccom.h>
109 #endif  /* !_IOWR */
110 
111 /*
112  * The first part of this file contains the new FreeBSD sound ioctl
113  * interface. Tries to minimize the number of different ioctls, and
114  * to be reasonably general.
115  *
116  * 970821: some of the new calls have not been implemented yet.
117  */
118 
119 /*
120  * the following three calls extend the generic file descriptor
121  * interface. AIONWRITE is the dual of FIONREAD, i.e. returns the max
122  * number of bytes for a write operation to be non-blocking.
123  *
124  * AIOGSIZE/AIOSSIZE are used to change the behaviour of the device,
125  * from a character device (default) to a block device. In block mode,
126  * (not to be confused with blocking mode) the main difference for the
127  * application is that select() will return only when a complete
128  * block can be read/written to the device, whereas in character mode
129  * select will return true when one byte can be exchanged. For audio
130  * devices, character mode makes select almost useless since one byte
131  * will always be ready by the next sample time (which is often only a
132  * handful of microseconds away).
133  * Use a size of 0 or 1 to return to character mode.
134  */
135 #define	AIONWRITE   _IOR('A', 10, int)   /* get # bytes to write */
136 struct snd_size {
137     int play_size;
138     int rec_size;
139 };
140 #define	AIOGSIZE    _IOR('A', 11, struct snd_size)/* read current blocksize */
141 #define	AIOSSIZE    _IOWR('A', 11, struct snd_size)  /* sets blocksize */
142 
143 /*
144  * The following constants define supported audio formats. The
145  * encoding follows voxware conventions, i.e. 1 bit for each supported
146  * format. We extend it by using bit 31 (RO) to indicate full-duplex
147  * capability, and bit 29 (RO) to indicate that the card supports/
148  * needs different formats on capture & playback channels.
149  * Bit 29 (RW) is used to indicate/ask stereo.
150  *
151  * The number of bits required to store the sample is:
152  *  o  4 bits for the IDA ADPCM format,
153  *  o  8 bits for 8-bit formats, mu-law and A-law,
154  *  o  16 bits for the 16-bit formats, and
155  *  o  32 bits for the 24/32-bit formats.
156  *  o  undefined for the MPEG audio format.
157  */
158 
159 #define AFMT_QUERY	0x00000000	/* Return current format */
160 #define AFMT_MU_LAW	0x00000001	/* Logarithmic mu-law */
161 #define AFMT_A_LAW	0x00000002	/* Logarithmic A-law */
162 #define AFMT_IMA_ADPCM	0x00000004	/* A 4:1 compressed format where 16-bit
163 					 * squence represented using the
164 					 * the average 4 bits per sample */
165 #define AFMT_U8		0x00000008	/* Unsigned 8-bit */
166 #define AFMT_S16_LE	0x00000010	/* Little endian signed 16-bit */
167 #define AFMT_S16_BE	0x00000020	/* Big endian signed 16-bit */
168 #define AFMT_S8		0x00000040	/* Signed 8-bit */
169 #define AFMT_U16_LE	0x00000080	/* Little endian unsigned 16-bit */
170 #define AFMT_U16_BE	0x00000100	/* Big endian unsigned 16-bit */
171 #define AFMT_MPEG	0x00000200	/* MPEG MP2/MP3 audio */
172 #define AFMT_AC3	0x00000400	/* Dolby Digital AC3 */
173 
174 #if _BYTE_ORDER == _LITTLE_ENDIAN
175 #define AFMT_S16_NE	AFMT_S16_LE	/* native endian signed 16 */
176 #else
177 #define AFMT_S16_NE	AFMT_S16_BE
178 #endif
179 
180 /*
181  * 32-bit formats below used for 24-bit audio data where the data is stored
182  * in the 24 most significant bits and the least significant bits are not used
183  * (should be set to 0).
184  */
185 #define AFMT_S32_LE	0x00001000	/* Little endian signed 32-bit */
186 #define AFMT_S32_BE	0x00002000	/* Big endian signed 32-bit */
187 #define AFMT_U32_LE	0x00004000	/* Little endian unsigned 32-bit */
188 #define AFMT_U32_BE	0x00008000	/* Big endian unsigned 32-bit */
189 #define AFMT_S24_LE	0x00010000	/* Little endian signed 24-bit */
190 #define AFMT_S24_BE	0x00020000	/* Big endian signed 24-bit */
191 #define AFMT_U24_LE	0x00040000	/* Little endian unsigned 24-bit */
192 #define AFMT_U24_BE	0x00080000	/* Big endian unsigned 24-bit */
193 
194 #define AFMT_STEREO	0x10000000	/* can do/want stereo	*/
195 
196 /*
197  * the following are really capabilities
198  */
199 #define AFMT_WEIRD	0x20000000	/* weird hardware...	*/
200     /*
201      * AFMT_WEIRD reports that the hardware might need to operate
202      * with different formats in the playback and capture
203      * channels when operating in full duplex.
204      * As an example, SoundBlaster16 cards only support U8 in one
205      * direction and S16 in the other one, and applications should
206      * be aware of this limitation.
207      */
208 #define AFMT_FULLDUPLEX	0x80000000	/* can do full duplex	*/
209 
210 /*
211  * The following structure is used to get/set format and sampling rate.
212  * While it would be better to have things such as stereo, bits per
213  * sample, endiannes, etc split in different variables, it turns out
214  * that formats are not that many, and not all combinations are possible.
215  * So we followed the Voxware approach of associating one bit to each
216  * format.
217  */
218 
219 typedef struct _snd_chan_param {
220     u_long	play_rate;	/* sampling rate			*/
221     u_long	rec_rate;	/* sampling rate			*/
222     u_long	play_format;	/* everything describing the format	*/
223     u_long	rec_format;	/* everything describing the format	*/
224 } snd_chan_param;
225 #define	AIOGFMT    _IOR('f', 12, snd_chan_param)   /* get format */
226 #define	AIOSFMT    _IOWR('f', 12, snd_chan_param)  /* sets format */
227 
228 /*
229  * The following structure is used to get/set the mixer setting.
230  * Up to 32 mixers are supported, each one with up to 32 channels.
231  */
232 typedef struct _snd_mix_param {
233     u_char	subdev;	/* which output				*/
234     u_char	line;	/* which input				*/
235     u_char	left,right; /* volumes, 0..255, 0 = mute	*/
236 } snd_mix_param ;
237 
238 /* XXX AIOGMIX, AIOSMIX not implemented yet */
239 #define AIOGMIX	_IOWR('A', 13, snd_mix_param)	/* return mixer status */
240 #define AIOSMIX	_IOWR('A', 14, snd_mix_param)	/* sets mixer status   */
241 
242 /*
243  * channel specifiers used in AIOSTOP and AIOSYNC
244  */
245 #define	AIOSYNC_PLAY	0x1	/* play chan */
246 #define	AIOSYNC_CAPTURE	0x2	/* capture chan */
247 /* AIOSTOP stop & flush a channel, returns the residual count */
248 #define	AIOSTOP	_IOWR ('A', 15, int)
249 
250 /* alternate method used to notify the sync condition */
251 #define	AIOSYNC_SIGNAL	0x100
252 #define	AIOSYNC_SELECT	0x200
253 
254 /* what the 'pos' field refers to */
255 #define AIOSYNC_READY	0x400
256 #define AIOSYNC_FREE	0x800
257 
258 typedef struct _snd_sync_parm {
259     long chan ; /* play or capture channel, plus modifier */
260     long pos;
261 } snd_sync_parm;
262 #define	AIOSYNC	_IOWR ('A', 15, snd_sync_parm)	/* misc. synchronization */
263 
264 /*
265  * The following is used to return device capabilities. If the structure
266  * passed to the ioctl is zeroed, default values are returned for rate
267  * and formats, a bitmap of available mixers is returned, and values
268  * (inputs, different levels) for the first one are returned.
269  *
270  * If  formats, mixers, inputs are instantiated, then detailed info
271  * are returned depending on the call.
272  */
273 typedef struct _snd_capabilities {
274     u_long	rate_min, rate_max;	/* min-max sampling rate */
275     u_long	formats;
276     u_long	bufsize; /* DMA buffer size */
277     u_long	mixers; /* bitmap of available mixers */
278     u_long	inputs; /* bitmap of available inputs (per mixer) */
279     u_short	left, right;	/* how many levels are supported */
280 } snd_capabilities;
281 #define AIOGCAP	_IOWR('A', 15, snd_capabilities)	/* get capabilities */
282 
283 /*
284  * here is the old (Voxware) ioctl interface
285  */
286 
287 /*
288  * IOCTL Commands for /dev/sequencer
289  */
290 
291 #define SNDCTL_SEQ_RESET	_IO  ('Q', 0)
292 #define SNDCTL_SEQ_SYNC		_IO  ('Q', 1)
293 #define SNDCTL_SYNTH_INFO	_IOWR('Q', 2, struct synth_info)
294 #define SNDCTL_SEQ_CTRLRATE	_IOWR('Q', 3, int) /* Set/get timer res.(hz) */
295 #define SNDCTL_SEQ_GETOUTCOUNT	_IOR ('Q', 4, int)
296 #define SNDCTL_SEQ_GETINCOUNT	_IOR ('Q', 5, int)
297 #define SNDCTL_SEQ_PERCMODE	_IOW ('Q', 6, int)
298 #define SNDCTL_FM_LOAD_INSTR	_IOW ('Q', 7, struct sbi_instrument)	/* Valid for FM only */
299 #define SNDCTL_SEQ_TESTMIDI	_IOW ('Q', 8, int)
300 #define SNDCTL_SEQ_RESETSAMPLES	_IOW ('Q', 9, int)
301 #define SNDCTL_SEQ_NRSYNTHS	_IOR ('Q',10, int)
302 #define SNDCTL_SEQ_NRMIDIS	_IOR ('Q',11, int)
303 #define SNDCTL_MIDI_INFO	_IOWR('Q',12, struct midi_info)
304 #define SNDCTL_SEQ_THRESHOLD	_IOW ('Q',13, int)
305 #define SNDCTL_SEQ_TRESHOLD	SNDCTL_SEQ_THRESHOLD	/* there was once a typo */
306 #define SNDCTL_SYNTH_MEMAVL	_IOWR('Q',14, int) /* in=dev#, out=memsize */
307 #define SNDCTL_FM_4OP_ENABLE	_IOW ('Q',15, int) /* in=dev# */
308 #define SNDCTL_PMGR_ACCESS	_IOWR('Q',16, struct patmgr_info)
309 #define SNDCTL_SEQ_PANIC	_IO  ('Q',17)
310 #define SNDCTL_SEQ_OUTOFBAND	_IOW ('Q',18, struct seq_event_rec)
311 #define SNDCTL_SEQ_GETTIME	_IOR ('Q',19, int)
312 
313 struct seq_event_rec {
314 	u_char arr[8];
315 };
316 
317 #define SNDCTL_TMR_TIMEBASE	_IOWR('T', 1, int)
318 #define SNDCTL_TMR_START	_IO  ('T', 2)
319 #define SNDCTL_TMR_STOP		_IO  ('T', 3)
320 #define SNDCTL_TMR_CONTINUE	_IO  ('T', 4)
321 #define SNDCTL_TMR_TEMPO	_IOWR('T', 5, int)
322 #define SNDCTL_TMR_SOURCE	_IOWR('T', 6, int)
323 #   define TMR_INTERNAL		0x00000001
324 #   define TMR_EXTERNAL		0x00000002
325 #	define TMR_MODE_MIDI	0x00000010
326 #	define TMR_MODE_FSK	0x00000020
327 #	define TMR_MODE_CLS	0x00000040
328 #	define TMR_MODE_SMPTE	0x00000080
329 #define SNDCTL_TMR_METRONOME	_IOW ('T', 7, int)
330 #define SNDCTL_TMR_SELECT	_IOW ('T', 8, int)
331 
332 /*
333  *	Endian aware patch key generation algorithm.
334  */
335 
336 #if defined(_AIX) || defined(AIX)
337 #  define _PATCHKEY(id) (0xfd00|id)
338 #else
339 #  define _PATCHKEY(id) ((id<<8)|0xfd)
340 #endif
341 
342 /*
343  *	Sample loading mechanism for internal synthesizers (/dev/sequencer)
344  *	The following patch_info structure has been designed to support
345  *	Gravis UltraSound. It tries to be universal format for uploading
346  *	sample based patches but is probably too limited.
347  */
348 
349 struct patch_info {
350 /*		u_short key;		 Use GUS_PATCH here */
351 	short key;		 /* Use GUS_PATCH here */
352 #define GUS_PATCH	_PATCHKEY(0x04)
353 #define OBSOLETE_GUS_PATCH	_PATCHKEY(0x02)
354 
355 	short device_no;	/* Synthesizer number */
356 	short instr_no;		/* Midi pgm# */
357 
358 	u_long mode;
359 /*
360  * The least significant byte has the same format than the GUS .PAT
361  * files
362  */
363 #define WAVE_16_BITS	0x01	/* bit 0 = 8 or 16 bit wave data. */
364 #define WAVE_UNSIGNED	0x02	/* bit 1 = Signed - Unsigned data. */
365 #define WAVE_LOOPING	0x04	/* bit 2 = looping enabled-1. */
366 #define WAVE_BIDIR_LOOP	0x08	/* bit 3 = Set is bidirectional looping. */
367 #define WAVE_LOOP_BACK	0x10	/* bit 4 = Set is looping backward. */
368 #define WAVE_SUSTAIN_ON	0x20	/* bit 5 = Turn sustaining on. (Env. pts. 3)*/
369 #define WAVE_ENVELOPES	0x40	/* bit 6 = Enable envelopes - 1 */
370 				/* 	(use the env_rate/env_offs fields). */
371 /* Linux specific bits */
372 #define WAVE_VIBRATO	0x00010000	/* The vibrato info is valid */
373 #define WAVE_TREMOLO	0x00020000	/* The tremolo info is valid */
374 #define WAVE_SCALE	0x00040000	/* The scaling info is valid */
375 /* Other bits must be zeroed */
376 
377 	long len;	/* Size of the wave data in bytes */
378 	long loop_start, loop_end; /* Byte offsets from the beginning */
379 
380 /*
381  * The base_freq and base_note fields are used when computing the
382  * playback speed for a note. The base_note defines the tone frequency
383  * which is heard if the sample is played using the base_freq as the
384  * playback speed.
385  *
386  * The low_note and high_note fields define the minimum and maximum note
387  * frequencies for which this sample is valid. It is possible to define
388  * more than one samples for an instrument number at the same time. The
389  * low_note and high_note fields are used to select the most suitable one.
390  *
391  * The fields base_note, high_note and low_note should contain
392  * the note frequency multiplied by 1000. For example value for the
393  * middle A is 440*1000.
394  */
395 
396 	u_int base_freq;
397 	u_long base_note;
398 	u_long high_note;
399 	u_long low_note;
400 	int panning;	/* -128=left, 127=right */
401 	int detuning;
402 
403 /*	New fields introduced in version 1.99.5	*/
404 
405        /* Envelope. Enabled by mode bit WAVE_ENVELOPES	*/
406 	u_char	env_rate[ 6 ];	 /* GUS HW ramping rate */
407 	u_char	env_offset[ 6 ]; /* 255 == 100% */
408 
409 	/*
410 	 * The tremolo, vibrato and scale info are not supported yet.
411 	 * Enable by setting the mode bits WAVE_TREMOLO, WAVE_VIBRATO or
412 	 * WAVE_SCALE
413 	 */
414 
415 	u_char	tremolo_sweep;
416 	u_char	tremolo_rate;
417 	u_char	tremolo_depth;
418 
419 	u_char	vibrato_sweep;
420 	u_char	vibrato_rate;
421 	u_char	vibrato_depth;
422 
423 	int		scale_frequency;
424 	u_int	scale_factor;		/* from 0 to 2048 or 0 to 2 */
425 
426 	int		volume;
427 	int		spare[4];
428 	char data[1];	/* The waveform data starts here */
429 };
430 
431 struct sysex_info {
432 	short key;		/* Use GUS_PATCH here */
433 #define SYSEX_PATCH	_PATCHKEY(0x05)
434 #define MAUI_PATCH	_PATCHKEY(0x06)
435 	short device_no;	/* Synthesizer number */
436 	long len;	/* Size of the sysex data in bytes */
437 	u_char data[1];	/* Sysex data starts here */
438 };
439 
440 /*
441  * Patch management interface (/dev/sequencer, /dev/patmgr#)
442  * Don't use these calls if you want to maintain compatibility with
443  * the future versions of the driver.
444  */
445 
446 #define PS_NO_PATCHES		0	/* No patch support on device */
447 #define	PS_MGR_NOT_OK		1	/* Plain patch support (no mgr) */
448 #define	PS_MGR_OK		2	/* Patch manager supported */
449 #define	PS_MANAGED		3	/* Patch manager running */
450 
451 #define SNDCTL_PMGR_IFACE		_IOWR('P', 1, struct patmgr_info)
452 
453 /*
454  * The patmgr_info is a fixed size structure which is used for two
455  * different purposes. The intended use is for communication between
456  * the application using /dev/sequencer and the patch manager daemon
457  * associated with a synthesizer device (ioctl(SNDCTL_PMGR_ACCESS)).
458  *
459  * This structure is also used with ioctl(SNDCTL_PGMR_IFACE) which allows
460  * a patch manager daemon to read and write device parameters. This
461  * ioctl available through /dev/sequencer also. Avoid using it since it's
462  * extremely hardware dependent. In addition access trough /dev/sequencer
463  * may confuse the patch manager daemon.
464  */
465 
466 struct patmgr_info {	/* Note! size must be < 4k since kmalloc() is used */
467 	  u_long key;	/* Don't worry. Reserved for communication
468 	  			   between the patch manager and the driver. */
469 #define PM_K_EVENT		1 /* Event from the /dev/sequencer driver */
470 #define PM_K_COMMAND		2 /* Request from an application */
471 #define PM_K_RESPONSE		3 /* From patmgr to application */
472 #define PM_ERROR		4 /* Error returned by the patmgr */
473 	  int device;
474 	  int command;
475 
476 /*
477  * Commands 0x000 to 0xfff reserved for patch manager programs
478  */
479 #define PM_GET_DEVTYPE	1	/* Returns type of the patch mgr interface of dev */
480 #define		PMTYPE_FM2	1	/* 2 OP fm */
481 #define		PMTYPE_FM4	2	/* Mixed 4 or 2 op FM (OPL-3) */
482 #define		PMTYPE_WAVE	3	/* Wave table synthesizer (GUS) */
483 #define PM_GET_NRPGM	2	/* Returns max # of midi programs in parm1 */
484 #define PM_GET_PGMMAP	3	/* Returns map of loaded midi programs in data8 */
485 #define PM_GET_PGM_PATCHES 4	/* Return list of patches of a program (parm1) */
486 #define PM_GET_PATCH	5	/* Return patch header of patch parm1 */
487 #define PM_SET_PATCH	6	/* Set patch header of patch parm1 */
488 #define PM_READ_PATCH	7	/* Read patch (wave) data */
489 #define PM_WRITE_PATCH	8	/* Write patch (wave) data */
490 
491 /*
492  * Commands 0x1000 to 0xffff are for communication between the patch manager
493  * and the client
494  */
495 #define _PM_LOAD_PATCH	0x100
496 
497 /*
498  * Commands above 0xffff reserved for device specific use
499  */
500 
501 	long parm1;
502 	long parm2;
503 	long parm3;
504 
505 	union {
506 		u_char data8[4000];
507 		u_short data16[2000];
508 		u_long data32[1000];
509 		struct patch_info patch;
510 	} data;
511 };
512 
513 /*
514  * When a patch manager daemon is present, it will be informed by the
515  * driver when something important happens. For example when the
516  * /dev/sequencer is opened or closed. A record with key == PM_K_EVENT is
517  * returned. The command field contains the event type:
518  */
519 #define PM_E_OPENED		1	/* /dev/sequencer opened */
520 #define PM_E_CLOSED		2	/* /dev/sequencer closed */
521 #define PM_E_PATCH_RESET	3	/* SNDCTL_RESETSAMPLES called */
522 #define PM_E_PATCH_LOADED	4	/* A patch has been loaded by appl */
523 
524 /*
525  * /dev/sequencer input events.
526  *
527  * The data written to the /dev/sequencer is a stream of events. Events
528  * are records of 4 or 8 bytes. The first byte defines the size.
529  * Any number of events can be written with a write call. There
530  * is a set of macros for sending these events. Use these macros if you
531  * want to maximize portability of your program.
532  *
533  * Events SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO. Are also input events.
534  * (All input events are currently 4 bytes long. Be prepared to support
535  * 8 byte events also. If you receive any event having first byte >= 128,
536  * it's a 8 byte event.
537  *
538  * The events are documented at the end of this file.
539  *
540  * Normal events (4 bytes)
541  * There is also a 8 byte version of most of the 4 byte events. The
542  * 8 byte one is recommended.
543  */
544 #define SEQ_NOTEOFF		0
545 #define SEQ_FMNOTEOFF		SEQ_NOTEOFF	/* Just old name */
546 #define SEQ_NOTEON		1
547 #define	SEQ_FMNOTEON		SEQ_NOTEON
548 #define SEQ_WAIT		TMR_WAIT_ABS
549 #define SEQ_PGMCHANGE		3
550 #define SEQ_FMPGMCHANGE		SEQ_PGMCHANGE
551 #define SEQ_SYNCTIMER		TMR_START
552 #define SEQ_MIDIPUTC		5
553 #define SEQ_DRUMON		6	/*** OBSOLETE ***/
554 #define SEQ_DRUMOFF		7	/*** OBSOLETE ***/
555 #define SEQ_ECHO		TMR_ECHO	/* For synching programs with output */
556 #define SEQ_AFTERTOUCH		9
557 #define SEQ_CONTROLLER		10
558 
559 /*
560  *	Midi controller numbers
561  *
562  * Controllers 0 to 31 (0x00 to 0x1f) and 32 to 63 (0x20 to 0x3f)
563  * are continuous controllers.
564  * In the MIDI 1.0 these controllers are sent using two messages.
565  * Controller numbers 0 to 31 are used to send the MSB and the
566  * controller numbers 32 to 63 are for the LSB. Note that just 7 bits
567  * are used in MIDI bytes.
568  */
569 
570 #define	CTL_BANK_SELECT		0x00
571 #define	CTL_MODWHEEL		0x01
572 #define CTL_BREATH		0x02
573 /*	undefined		0x03 */
574 #define CTL_FOOT		0x04
575 #define CTL_PORTAMENTO_TIME	0x05
576 #define CTL_DATA_ENTRY		0x06
577 #define CTL_MAIN_VOLUME		0x07
578 #define CTL_BALANCE		0x08
579 /*	undefined		0x09 */
580 #define CTL_PAN			0x0a
581 #define CTL_EXPRESSION		0x0b
582 /*	undefined		0x0c - 0x0f */
583 #define CTL_GENERAL_PURPOSE1	0x10
584 #define CTL_GENERAL_PURPOSE2	0x11
585 #define CTL_GENERAL_PURPOSE3	0x12
586 #define CTL_GENERAL_PURPOSE4	0x13
587 /*	undefined		0x14 - 0x1f */
588 
589 /*	undefined		0x20 */
590 
591 /*
592  * The controller numbers 0x21 to 0x3f are reserved for the
593  * least significant bytes of the controllers 0x00 to 0x1f.
594  * These controllers are not recognised by the driver.
595  *
596  * Controllers 64 to 69 (0x40 to 0x45) are on/off switches.
597  * 0=OFF and 127=ON (intermediate values are possible)
598  */
599 #define CTL_DAMPER_PEDAL	0x40
600 #define CTL_SUSTAIN		CTL_DAMPER_PEDAL	/* Alias */
601 #define CTL_HOLD		CTL_DAMPER_PEDAL	/* Alias */
602 #define CTL_PORTAMENTO		0x41
603 #define CTL_SOSTENUTO		0x42
604 #define CTL_SOFT_PEDAL		0x43
605 /*	undefined		0x44 */
606 #define CTL_HOLD2		0x45
607 /*	undefined		0x46 - 0x4f */
608 
609 #define CTL_GENERAL_PURPOSE5	0x50
610 #define CTL_GENERAL_PURPOSE6	0x51
611 #define CTL_GENERAL_PURPOSE7	0x52
612 #define CTL_GENERAL_PURPOSE8	0x53
613 /*	undefined		0x54 - 0x5a */
614 #define CTL_EXT_EFF_DEPTH	0x5b
615 #define CTL_TREMOLO_DEPTH	0x5c
616 #define CTL_CHORUS_DEPTH	0x5d
617 #define CTL_DETUNE_DEPTH	0x5e
618 #define CTL_CELESTE_DEPTH	CTL_DETUNE_DEPTH /* Alias for the above one */
619 #define CTL_PHASER_DEPTH	0x5f
620 #define CTL_DATA_INCREMENT	0x60
621 #define CTL_DATA_DECREMENT	0x61
622 #define CTL_NONREG_PARM_NUM_LSB	0x62
623 #define CTL_NONREG_PARM_NUM_MSB	0x63
624 #define CTL_REGIST_PARM_NUM_LSB	0x64
625 #define CTL_REGIST_PARM_NUM_MSB	0x65
626 /*	undefined		0x66 - 0x78 */
627 /*	reserved		0x79 - 0x7f */
628 
629 /* Pseudo controllers (not midi compatible) */
630 #define CTRL_PITCH_BENDER	255
631 #define CTRL_PITCH_BENDER_RANGE	254
632 #define CTRL_EXPRESSION		253	/* Obsolete */
633 #define CTRL_MAIN_VOLUME	252	/* Obsolete */
634 
635 #define SEQ_BALANCE		11
636 #define SEQ_VOLMODE             12
637 
638 /*
639  * Volume mode decides how volumes are used
640  */
641 
642 #define VOL_METHOD_ADAGIO	1
643 #define VOL_METHOD_LINEAR	2
644 
645 /*
646  * Note! SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO are used also as
647  *	 input events.
648  */
649 
650 /*
651  * Event codes 0xf0 to 0xfc are reserved for future extensions.
652  */
653 
654 #define SEQ_FULLSIZE		0xfd	/* Long events */
655 /*
656  * SEQ_FULLSIZE events are used for loading patches/samples to the
657  * synthesizer devices. These events are passed directly to the driver
658  * of the associated synthesizer device. There is no limit to the size
659  * of the extended events. These events are not queued but executed
660  * immediately when the write() is called (execution can take several
661  * seconds of time).
662  *
663  * When a SEQ_FULLSIZE message is written to the device, it must
664  * be written using exactly one write() call. Other events cannot
665  * be mixed to the same write.
666  *
667  * For FM synths (YM3812/OPL3) use struct sbi_instrument and write
668  * it to the /dev/sequencer. Don't write other data together with
669  * the instrument structure Set the key field of the structure to
670  * FM_PATCH. The device field is used to route the patch to the
671  * corresponding device.
672  *
673  * For Gravis UltraSound use struct patch_info. Initialize the key field
674  * to GUS_PATCH.
675  */
676 #define SEQ_PRIVATE	0xfe	/* Low level HW dependent events (8 bytes) */
677 #define SEQ_EXTENDED	0xff	/* Extended events (8 bytes) OBSOLETE */
678 
679 /*
680  * Record for FM patches
681  */
682 
683 typedef u_char sbi_instr_data[32];
684 
685 struct sbi_instrument {
686 	u_short	key;	/* FM_PATCH or OPL3_PATCH */
687 #define FM_PATCH	_PATCHKEY(0x01)
688 #define OPL3_PATCH	_PATCHKEY(0x03)
689 	short		device;		/* Synth# (0-4)	*/
690 	int 		channel;	/* Program# to be initialized  */
691 	sbi_instr_data	operators;	/* Reg. settings for operator cells
692 					 * (.SBI format)	*/
693 };
694 
695 struct synth_info {	/* Read only */
696 	char	name[30];
697 	int	device;		/* 0-N. INITIALIZE BEFORE CALLING */
698 	int	synth_type;
699 #define SYNTH_TYPE_FM			0
700 #define SYNTH_TYPE_SAMPLE		1
701 #define SYNTH_TYPE_MIDI			2	/* Midi interface */
702 
703 	int	synth_subtype;
704 #define FM_TYPE_ADLIB			0x00
705 #define FM_TYPE_OPL3			0x01
706 #define MIDI_TYPE_MPU401		0x401
707 
708 #define SAMPLE_TYPE_BASIC		0x10
709 #define SAMPLE_TYPE_GUS			SAMPLE_TYPE_BASIC
710 #define SAMPLE_TYPE_AWE32		0x20
711 
712 	int	perc_mode;	/* No longer supported */
713 	int	nr_voices;
714 	int	nr_drums;	/* Obsolete field */
715 	int	instr_bank_size;
716 	u_long	capabilities;
717 #define SYNTH_CAP_PERCMODE	0x00000001 /* No longer used */
718 #define SYNTH_CAP_OPL3		0x00000002 /* Set if OPL3 supported */
719 #define SYNTH_CAP_INPUT		0x00000004 /* Input (MIDI) device */
720 	int	dummies[19];	/* Reserve space */
721 };
722 
723 struct sound_timer_info {
724 	char name[32];
725 	int caps;
726 };
727 
728 struct midi_info {
729 	char		name[30];
730 	int		device;		/* 0-N. INITIALIZE BEFORE CALLING */
731 	u_long	capabilities;	/* To be defined later */
732 	int		dev_type;
733 	int		dummies[18];	/* Reserve space */
734 };
735 
736 /*
737  * ioctl commands for the /dev/midi##
738  */
739 typedef struct {
740 	u_char cmd;
741 	char nr_args, nr_returns;
742 	u_char data[30];
743 } mpu_command_rec;
744 
745 #define SNDCTL_MIDI_PRETIME	_IOWR('m', 0, int)
746 #define SNDCTL_MIDI_MPUMODE	_IOWR('m', 1, int)
747 #define SNDCTL_MIDI_MPUCMD	_IOWR('m', 2, mpu_command_rec)
748 #define MIOSPASSTHRU		_IOWR('m', 3, int)
749 #define MIOGPASSTHRU		_IOWR('m', 4, int)
750 
751 /*
752  * IOCTL commands for /dev/dsp and /dev/audio
753  */
754 
755 #define SNDCTL_DSP_RESET	_IO  ('P', 0)
756 #define SNDCTL_DSP_SYNC		_IO  ('P', 1)
757 #define SNDCTL_DSP_SPEED	_IOWR('P', 2, int)
758 #define SNDCTL_DSP_STEREO	_IOWR('P', 3, int)
759 #define SNDCTL_DSP_GETBLKSIZE	_IOR('P', 4, int)
760 #define SNDCTL_DSP_SETBLKSIZE   _IOW('P', 4, int)
761 #define SNDCTL_DSP_SETFMT	_IOWR('P',5, int) /* Selects ONE fmt*/
762 
763 /*
764  * SOUND_PCM_WRITE_CHANNELS is not that different
765  * from SNDCTL_DSP_STEREO
766  */
767 #define SOUND_PCM_WRITE_CHANNELS	_IOWR('P', 6, int)
768 #define SNDCTL_DSP_CHANNELS	SOUND_PCM_WRITE_CHANNELS
769 #define SOUND_PCM_WRITE_FILTER	_IOWR('P', 7, int)
770 #define SNDCTL_DSP_POST		_IO  ('P', 8)
771 
772 /*
773  * SNDCTL_DSP_SETBLKSIZE and the following two calls mostly do
774  * the same thing, i.e. set the block size used in DMA transfers.
775  */
776 #define SNDCTL_DSP_SUBDIVIDE	_IOWR('P', 9, int)
777 #define SNDCTL_DSP_SETFRAGMENT	_IOWR('P',10, int)
778 
779 
780 #define SNDCTL_DSP_GETFMTS	_IOR ('P',11, int) /* Returns a mask */
781 /*
782  * Buffer status queries.
783  */
784 typedef struct audio_buf_info {
785     int fragments;	/* # of avail. frags (partly used ones not counted) */
786     int fragstotal;	/* Total # of fragments allocated */
787     int fragsize;	/* Size of a fragment in bytes */
788 
789     int bytes;	/* Avail. space in bytes (includes partly used fragments) */
790 		/* Note! 'bytes' could be more than fragments*fragsize */
791 } audio_buf_info;
792 
793 #define SNDCTL_DSP_GETOSPACE	_IOR ('P',12, audio_buf_info)
794 #define SNDCTL_DSP_GETISPACE	_IOR ('P',13, audio_buf_info)
795 
796 /*
797  * SNDCTL_DSP_NONBLOCK is the same (but less powerful, since the
798  * action cannot be undone) of FIONBIO. The same can be achieved
799  * by opening the device with O_NDELAY
800  */
801 #define SNDCTL_DSP_NONBLOCK	_IO  ('P',14)
802 
803 #define SNDCTL_DSP_GETCAPS	_IOR ('P',15, int)
804 #	define PCM_CAP_REVISION		0x000000ff	/* Bits for revision level (0 to 255) */
805 #	define PCM_CAP_DUPLEX		0x00000100	/* Full duplex record/playback */
806 #	define PCM_CAP_REALTIME		0x00000200	/* Not in use */
807 #	define PCM_CAP_BATCH		0x00000400	/* Device has some kind of */
808 							/* internal buffers which may */
809 							/* cause some delays and */
810 							/* decrease precision of timing */
811 #	define PCM_CAP_COPROC		0x00000800	/* Has a coprocessor */
812 							/* Sometimes it's a DSP */
813 							/* but usually not */
814 #	define PCM_CAP_TRIGGER		0x00001000	/* Supports SETTRIGGER */
815 #	define PCM_CAP_MMAP		0x00002000	/* Supports mmap() */
816 #	define PCM_CAP_MULTI		0x00004000	/* Supports multiple open */
817 #	define PCM_CAP_BIND		0x00008000	/* Supports binding to front/rear/center/lfe */
818 #   	define PCM_CAP_INPUT		0x00010000	/* Supports recording */
819 #   	define PCM_CAP_OUTPUT		0x00020000	/* Supports playback */
820 #	define PCM_CAP_VIRTUAL		0x00040000	/* Virtual device */
821 /* 0x00040000 and 0x00080000 reserved for future use */
822 
823 /* Analog/digital control capabilities */
824 #	define PCM_CAP_ANALOGOUT	0x00100000
825 #	define PCM_CAP_ANALOGIN		0x00200000
826 #	define PCM_CAP_DIGITALOUT	0x00400000
827 #	define PCM_CAP_DIGITALIN	0x00800000
828 #	define PCM_CAP_ADMASK		0x00f00000
829 /*
830  * NOTE! (capabilities & PCM_CAP_ADMASK)==0 means just that the
831  * digital/analog interface control features are not supported by the
832  * device/driver. However the device still supports analog, digital or
833  * both inputs/outputs (depending on the device). See the OSS Programmer's
834  * Guide for full details.
835  */
836 #	define PCM_CAP_SPECIAL		0x01000000	/* Not for ordinary "multimedia" use */
837 #	define PCM_CAP_SHADOW		0x00000000	/* OBSOLETE */
838 
839 /*
840  * Preferred channel usage. These bits can be used to
841  * give recommendations to the application. Used by few drivers.
842  * For example if ((caps & DSP_CH_MASK) == DSP_CH_MONO) means that
843  * the device works best in mono mode. However it doesn't necessarily mean
844  * that the device cannot be used in stereo. These bits should only be used
845  * by special applications such as multi track hard disk recorders to find
846  * out the initial setup. However the user should be able to override this
847  * selection.
848  *
849  * To find out which modes are actually supported the application should
850  * try to select them using SNDCTL_DSP_CHANNELS.
851  */
852 #	define DSP_CH_MASK		0x06000000	/* Mask */
853 #	define DSP_CH_ANY		0x00000000	/* No preferred mode */
854 #	define DSP_CH_MONO		0x02000000
855 #	define DSP_CH_STEREO		0x04000000
856 #	define DSP_CH_MULTI		0x06000000	/* More than two channels */
857 
858 #	define PCM_CAP_HIDDEN		0x08000000	/* Hidden device */
859 #	define PCM_CAP_FREERATE		0x10000000
860 #	define PCM_CAP_MODEM		0x20000000	/* Modem device */
861 #	define PCM_CAP_DEFAULT		0x40000000	/* "Default" device */
862 
863 /*
864  * The PCM_CAP_* capability names were known as DSP_CAP_* prior OSS 4.0
865  * so it's necessary to define the older names too.
866  */
867 #define DSP_CAP_ADMASK		PCM_CAP_ADMASK
868 #define DSP_CAP_ANALOGIN	PCM_CAP_ANALOGIN
869 #define DSP_CAP_ANALOGOUT	PCM_CAP_ANALOGOUT
870 #define DSP_CAP_BATCH		PCM_CAP_BATCH
871 #define DSP_CAP_BIND		PCM_CAP_BIND
872 #define DSP_CAP_COPROC		PCM_CAP_COPROC
873 #define DSP_CAP_DEFAULT		PCM_CAP_DEFAULT
874 #define DSP_CAP_DIGITALIN	PCM_CAP_DIGITALIN
875 #define DSP_CAP_DIGITALOUT	PCM_CAP_DIGITALOUT
876 #define DSP_CAP_DUPLEX		PCM_CAP_DUPLEX
877 #define DSP_CAP_FREERATE	PCM_CAP_FREERATE
878 #define DSP_CAP_HIDDEN		PCM_CAP_HIDDEN
879 #define DSP_CAP_INPUT		PCM_CAP_INPUT
880 #define DSP_CAP_MMAP		PCM_CAP_MMAP
881 #define DSP_CAP_MODEM		PCM_CAP_MODEM
882 #define DSP_CAP_MULTI		PCM_CAP_MULTI
883 #define DSP_CAP_OUTPUT		PCM_CAP_OUTPUT
884 #define DSP_CAP_REALTIME	PCM_CAP_REALTIME
885 #define DSP_CAP_REVISION	PCM_CAP_REVISION
886 #define DSP_CAP_SHADOW		PCM_CAP_SHADOW
887 #define DSP_CAP_TRIGGER		PCM_CAP_TRIGGER
888 #define DSP_CAP_VIRTUAL		PCM_CAP_VIRTUAL
889 
890 /*
891  * What do these function do ?
892  */
893 #define SNDCTL_DSP_GETTRIGGER	_IOR ('P',16, int)
894 #define SNDCTL_DSP_SETTRIGGER	_IOW ('P',16, int)
895 #define PCM_ENABLE_INPUT	0x00000001
896 #define PCM_ENABLE_OUTPUT	0x00000002
897 
898 typedef struct count_info {
899 	int bytes;	/* Total # of bytes processed */
900 	int blocks;	/* # of fragment transitions since last time */
901 	int ptr;	/* Current DMA pointer value */
902 } count_info;
903 
904 /*
905  * GETIPTR and GETISPACE are not that different... same for out.
906  */
907 #define SNDCTL_DSP_GETIPTR	_IOR ('P',17, count_info)
908 #define SNDCTL_DSP_GETOPTR	_IOR ('P',18, count_info)
909 
910 typedef struct buffmem_desc {
911 	caddr_t buffer;
912 	int size;
913 } buffmem_desc;
914 
915 #define SNDCTL_DSP_MAPINBUF	_IOR ('P', 19, buffmem_desc)
916 #define SNDCTL_DSP_MAPOUTBUF	_IOR ('P', 20, buffmem_desc)
917 #define SNDCTL_DSP_SETSYNCRO	_IO  ('P', 21)
918 #define SNDCTL_DSP_SETDUPLEX	_IO  ('P', 22)
919 #define SNDCTL_DSP_GETODELAY	_IOR ('P', 23, int)
920 
921 /*
922  * I guess these are the readonly version of the same
923  * functions that exist above as SNDCTL_DSP_...
924  */
925 #define SOUND_PCM_READ_RATE	_IOR ('P', 2, int)
926 #define SOUND_PCM_READ_CHANNELS	_IOR ('P', 6, int)
927 #define SOUND_PCM_READ_BITS	_IOR ('P', 5, int)
928 #define SOUND_PCM_READ_FILTER	_IOR ('P', 7, int)
929 
930 /*
931  * ioctl calls to be used in communication with coprocessors and
932  * DSP chips.
933  */
934 
935 typedef struct copr_buffer {
936 	int command;	/* Set to 0 if not used */
937 	int flags;
938 #define CPF_NONE		0x0000
939 #define CPF_FIRST		0x0001	/* First block */
940 #define CPF_LAST		0x0002	/* Last block */
941 	int len;
942 	int offs;	/* If required by the device (0 if not used) */
943 
944 	u_char data[4000]; /* NOTE! 4000 is not 4k */
945 } copr_buffer;
946 
947 typedef struct copr_debug_buf {
948 	int command;	/* Used internally. Set to 0 */
949 	int parm1;
950 	int parm2;
951 	int flags;
952 	int len;	/* Length of data in bytes */
953 } copr_debug_buf;
954 
955 typedef struct copr_msg {
956 	int len;
957 	u_char data[4000];
958 } copr_msg;
959 
960 #define SNDCTL_COPR_RESET       _IO  ('C',  0)
961 #define SNDCTL_COPR_LOAD	_IOWR('C',  1, copr_buffer)
962 #define SNDCTL_COPR_RDATA	_IOWR('C',  2, copr_debug_buf)
963 #define SNDCTL_COPR_RCODE	_IOWR('C',  3, copr_debug_buf)
964 #define SNDCTL_COPR_WDATA	_IOW ('C',  4, copr_debug_buf)
965 #define SNDCTL_COPR_WCODE	_IOW ('C',  5, copr_debug_buf)
966 #define SNDCTL_COPR_RUN		_IOWR('C',  6, copr_debug_buf)
967 #define SNDCTL_COPR_HALT	_IOWR('C',  7, copr_debug_buf)
968 #define SNDCTL_COPR_SENDMSG	_IOW ('C',  8, copr_msg)
969 #define SNDCTL_COPR_RCVMSG	_IOR ('C',  9, copr_msg)
970 
971 /*
972  * IOCTL commands for /dev/mixer
973  */
974 
975 /*
976  * Mixer devices
977  *
978  * There can be up to 20 different analog mixer channels. The
979  * SOUND_MIXER_NRDEVICES gives the currently supported maximum.
980  * The SOUND_MIXER_READ_DEVMASK returns a bitmask which tells
981  * the devices supported by the particular mixer.
982  */
983 
984 #define SOUND_MIXER_NRDEVICES	25
985 #define SOUND_MIXER_VOLUME	0	/* Master output level */
986 #define SOUND_MIXER_BASS	1	/* Treble level of all output channels */
987 #define SOUND_MIXER_TREBLE	2	/* Bass level of all output channels */
988 #define SOUND_MIXER_SYNTH	3	/* Volume of synthesier input */
989 #define SOUND_MIXER_PCM		4	/* Output level for the audio device */
990 #define SOUND_MIXER_SPEAKER	5	/* Output level for the PC speaker
991 					 * signals */
992 #define SOUND_MIXER_LINE	6	/* Volume level for the line in jack */
993 #define SOUND_MIXER_MIC		7	/* Volume for the signal coming from
994 					 * the microphone jack */
995 #define SOUND_MIXER_CD		8	/* Volume level for the input signal
996 					 * connected to the CD audio input */
997 #define SOUND_MIXER_IMIX	9	/* Recording monitor. It controls the
998 					 * output volume of the selected
999 					 * recording sources while recording */
1000 #define SOUND_MIXER_ALTPCM	10	/* Volume of the alternative codec
1001 					 * device */
1002 #define SOUND_MIXER_RECLEV	11	/* Global recording level */
1003 #define SOUND_MIXER_IGAIN	12	/* Input gain */
1004 #define SOUND_MIXER_OGAIN	13	/* Output gain */
1005 /*
1006  * The AD1848 codec and compatibles have three line level inputs
1007  * (line, aux1 and aux2). Since each card manufacturer have assigned
1008  * different meanings to these inputs, it's inpractical to assign
1009  * specific meanings (line, cd, synth etc.) to them.
1010  */
1011 #define SOUND_MIXER_LINE1	14	/* Input source 1  (aux1) */
1012 #define SOUND_MIXER_LINE2	15	/* Input source 2  (aux2) */
1013 #define SOUND_MIXER_LINE3	16	/* Input source 3  (line) */
1014 #define SOUND_MIXER_DIGITAL1    17      /* Digital (input) 1 */
1015 #define SOUND_MIXER_DIGITAL2    18      /* Digital (input) 2 */
1016 #define SOUND_MIXER_DIGITAL3    19      /* Digital (input) 3 */
1017 #define SOUND_MIXER_PHONEIN     20      /* Phone input */
1018 #define SOUND_MIXER_PHONEOUT    21      /* Phone output */
1019 #define SOUND_MIXER_VIDEO       22      /* Video/TV (audio) in */
1020 #define SOUND_MIXER_RADIO       23      /* Radio in */
1021 #define SOUND_MIXER_MONITOR     24      /* Monitor (usually mic) volume */
1022 
1023 
1024 /*
1025  * Some on/off settings (SOUND_SPECIAL_MIN - SOUND_SPECIAL_MAX)
1026  * Not counted to SOUND_MIXER_NRDEVICES, but use the same number space
1027  */
1028 #define SOUND_ONOFF_MIN		28
1029 #define SOUND_ONOFF_MAX		30
1030 #define SOUND_MIXER_MUTE	28	/* 0 or 1 */
1031 #define SOUND_MIXER_ENHANCE	29	/* Enhanced stereo (0, 40, 60 or 80) */
1032 #define SOUND_MIXER_LOUD	30	/* 0 or 1 */
1033 
1034 /* Note!	Number 31 cannot be used since the sign bit is reserved */
1035 #define SOUND_MIXER_NONE        31
1036 
1037 #define SOUND_DEVICE_LABELS	{ \
1038 	"Vol  ", "Bass ", "Trebl", "Synth", "Pcm  ", "Spkr ", "Line ", \
1039 	"Mic  ", "CD   ", "Mix  ", "Pcm2 ", "Rec  ", "IGain", "OGain", \
1040 	"Line1", "Line2", "Line3", "Digital1", "Digital2", "Digital3", \
1041 	"PhoneIn", "PhoneOut", "Video", "Radio", "Monitor"}
1042 
1043 #define SOUND_DEVICE_NAMES	{ \
1044 	"vol", "bass", "treble", "synth", "pcm", "speaker", "line", \
1045 	"mic", "cd", "mix", "pcm2", "rec", "igain", "ogain", \
1046 	"line1", "line2", "line3", "dig1", "dig2", "dig3", \
1047 	"phin", "phout", "video", "radio", "monitor"}
1048 
1049 /*	Device bitmask identifiers	*/
1050 
1051 #define SOUND_MIXER_RECSRC	0xff	/* 1 bit per recording source */
1052 #define SOUND_MIXER_DEVMASK	0xfe	/* 1 bit per supported device */
1053 #define SOUND_MIXER_RECMASK	0xfd	/* 1 bit per supp. recording source */
1054 #define SOUND_MIXER_CAPS	0xfc
1055 #define SOUND_CAP_EXCL_INPUT	0x00000001	/* Only 1 rec. src at a time */
1056 #define SOUND_MIXER_STEREODEVS	0xfb	/* Mixer channels supporting stereo */
1057 
1058 /*	Device mask bits	*/
1059 
1060 #define SOUND_MASK_VOLUME	(1 << SOUND_MIXER_VOLUME)
1061 #define SOUND_MASK_BASS		(1 << SOUND_MIXER_BASS)
1062 #define SOUND_MASK_TREBLE	(1 << SOUND_MIXER_TREBLE)
1063 #define SOUND_MASK_SYNTH	(1 << SOUND_MIXER_SYNTH)
1064 #define SOUND_MASK_PCM		(1 << SOUND_MIXER_PCM)
1065 #define SOUND_MASK_SPEAKER	(1 << SOUND_MIXER_SPEAKER)
1066 #define SOUND_MASK_LINE		(1 << SOUND_MIXER_LINE)
1067 #define SOUND_MASK_MIC		(1 << SOUND_MIXER_MIC)
1068 #define SOUND_MASK_CD		(1 << SOUND_MIXER_CD)
1069 #define SOUND_MASK_IMIX		(1 << SOUND_MIXER_IMIX)
1070 #define SOUND_MASK_ALTPCM	(1 << SOUND_MIXER_ALTPCM)
1071 #define SOUND_MASK_RECLEV	(1 << SOUND_MIXER_RECLEV)
1072 #define SOUND_MASK_IGAIN	(1 << SOUND_MIXER_IGAIN)
1073 #define SOUND_MASK_OGAIN	(1 << SOUND_MIXER_OGAIN)
1074 #define SOUND_MASK_LINE1	(1 << SOUND_MIXER_LINE1)
1075 #define SOUND_MASK_LINE2	(1 << SOUND_MIXER_LINE2)
1076 #define SOUND_MASK_LINE3	(1 << SOUND_MIXER_LINE3)
1077 #define SOUND_MASK_DIGITAL1     (1 << SOUND_MIXER_DIGITAL1)
1078 #define SOUND_MASK_DIGITAL2     (1 << SOUND_MIXER_DIGITAL2)
1079 #define SOUND_MASK_DIGITAL3     (1 << SOUND_MIXER_DIGITAL3)
1080 #define SOUND_MASK_PHONEIN      (1 << SOUND_MIXER_PHONEIN)
1081 #define SOUND_MASK_PHONEOUT     (1 << SOUND_MIXER_PHONEOUT)
1082 #define SOUND_MASK_RADIO        (1 << SOUND_MIXER_RADIO)
1083 #define SOUND_MASK_VIDEO        (1 << SOUND_MIXER_VIDEO)
1084 #define SOUND_MASK_MONITOR      (1 << SOUND_MIXER_MONITOR)
1085 
1086 /* Obsolete macros */
1087 #define SOUND_MASK_MUTE		(1 << SOUND_MIXER_MUTE)
1088 #define SOUND_MASK_ENHANCE	(1 << SOUND_MIXER_ENHANCE)
1089 #define SOUND_MASK_LOUD		(1 << SOUND_MIXER_LOUD)
1090 
1091 #define MIXER_READ(dev)		_IOR('M', dev, int)
1092 #define SOUND_MIXER_READ_VOLUME		MIXER_READ(SOUND_MIXER_VOLUME)
1093 #define SOUND_MIXER_READ_BASS		MIXER_READ(SOUND_MIXER_BASS)
1094 #define SOUND_MIXER_READ_TREBLE		MIXER_READ(SOUND_MIXER_TREBLE)
1095 #define SOUND_MIXER_READ_SYNTH		MIXER_READ(SOUND_MIXER_SYNTH)
1096 #define SOUND_MIXER_READ_PCM		MIXER_READ(SOUND_MIXER_PCM)
1097 #define SOUND_MIXER_READ_SPEAKER	MIXER_READ(SOUND_MIXER_SPEAKER)
1098 #define SOUND_MIXER_READ_LINE		MIXER_READ(SOUND_MIXER_LINE)
1099 #define SOUND_MIXER_READ_MIC		MIXER_READ(SOUND_MIXER_MIC)
1100 #define SOUND_MIXER_READ_CD		MIXER_READ(SOUND_MIXER_CD)
1101 #define SOUND_MIXER_READ_IMIX		MIXER_READ(SOUND_MIXER_IMIX)
1102 #define SOUND_MIXER_READ_ALTPCM		MIXER_READ(SOUND_MIXER_ALTPCM)
1103 #define SOUND_MIXER_READ_RECLEV		MIXER_READ(SOUND_MIXER_RECLEV)
1104 #define SOUND_MIXER_READ_IGAIN		MIXER_READ(SOUND_MIXER_IGAIN)
1105 #define SOUND_MIXER_READ_OGAIN		MIXER_READ(SOUND_MIXER_OGAIN)
1106 #define SOUND_MIXER_READ_LINE1		MIXER_READ(SOUND_MIXER_LINE1)
1107 #define SOUND_MIXER_READ_LINE2		MIXER_READ(SOUND_MIXER_LINE2)
1108 #define SOUND_MIXER_READ_LINE3		MIXER_READ(SOUND_MIXER_LINE3)
1109 #define SOUND_MIXER_READ_DIGITAL1	MIXER_READ(SOUND_MIXER_DIGITAL1)
1110 #define SOUND_MIXER_READ_DIGITAL2	MIXER_READ(SOUND_MIXER_DIGITAL2)
1111 #define SOUND_MIXER_READ_DIGITAL3	MIXER_READ(SOUND_MIXER_DIGITAL3)
1112 #define SOUND_MIXER_READ_PHONEIN      	MIXER_READ(SOUND_MIXER_PHONEIN)
1113 #define SOUND_MIXER_READ_PHONEOUT	MIXER_READ(SOUND_MIXER_PHONEOUT)
1114 #define SOUND_MIXER_READ_RADIO		MIXER_READ(SOUND_MIXER_RADIO)
1115 #define SOUND_MIXER_READ_VIDEO		MIXER_READ(SOUND_MIXER_VIDEO)
1116 #define SOUND_MIXER_READ_MONITOR	MIXER_READ(SOUND_MIXER_MONITOR)
1117 
1118 /* Obsolete macros */
1119 #define SOUND_MIXER_READ_MUTE		MIXER_READ(SOUND_MIXER_MUTE)
1120 #define SOUND_MIXER_READ_ENHANCE	MIXER_READ(SOUND_MIXER_ENHANCE)
1121 #define SOUND_MIXER_READ_LOUD		MIXER_READ(SOUND_MIXER_LOUD)
1122 
1123 #define SOUND_MIXER_READ_RECSRC		MIXER_READ(SOUND_MIXER_RECSRC)
1124 #define SOUND_MIXER_READ_DEVMASK	MIXER_READ(SOUND_MIXER_DEVMASK)
1125 #define SOUND_MIXER_READ_RECMASK	MIXER_READ(SOUND_MIXER_RECMASK)
1126 #define SOUND_MIXER_READ_STEREODEVS	MIXER_READ(SOUND_MIXER_STEREODEVS)
1127 #define SOUND_MIXER_READ_CAPS		MIXER_READ(SOUND_MIXER_CAPS)
1128 
1129 #define MIXER_WRITE(dev)		_IOWR('M', dev, int)
1130 #define SOUND_MIXER_WRITE_VOLUME	MIXER_WRITE(SOUND_MIXER_VOLUME)
1131 #define SOUND_MIXER_WRITE_BASS		MIXER_WRITE(SOUND_MIXER_BASS)
1132 #define SOUND_MIXER_WRITE_TREBLE	MIXER_WRITE(SOUND_MIXER_TREBLE)
1133 #define SOUND_MIXER_WRITE_SYNTH		MIXER_WRITE(SOUND_MIXER_SYNTH)
1134 #define SOUND_MIXER_WRITE_PCM		MIXER_WRITE(SOUND_MIXER_PCM)
1135 #define SOUND_MIXER_WRITE_SPEAKER	MIXER_WRITE(SOUND_MIXER_SPEAKER)
1136 #define SOUND_MIXER_WRITE_LINE		MIXER_WRITE(SOUND_MIXER_LINE)
1137 #define SOUND_MIXER_WRITE_MIC		MIXER_WRITE(SOUND_MIXER_MIC)
1138 #define SOUND_MIXER_WRITE_CD		MIXER_WRITE(SOUND_MIXER_CD)
1139 #define SOUND_MIXER_WRITE_IMIX		MIXER_WRITE(SOUND_MIXER_IMIX)
1140 #define SOUND_MIXER_WRITE_ALTPCM	MIXER_WRITE(SOUND_MIXER_ALTPCM)
1141 #define SOUND_MIXER_WRITE_RECLEV	MIXER_WRITE(SOUND_MIXER_RECLEV)
1142 #define SOUND_MIXER_WRITE_IGAIN		MIXER_WRITE(SOUND_MIXER_IGAIN)
1143 #define SOUND_MIXER_WRITE_OGAIN		MIXER_WRITE(SOUND_MIXER_OGAIN)
1144 #define SOUND_MIXER_WRITE_LINE1		MIXER_WRITE(SOUND_MIXER_LINE1)
1145 #define SOUND_MIXER_WRITE_LINE2		MIXER_WRITE(SOUND_MIXER_LINE2)
1146 #define SOUND_MIXER_WRITE_LINE3		MIXER_WRITE(SOUND_MIXER_LINE3)
1147 #define SOUND_MIXER_WRITE_DIGITAL1	MIXER_WRITE(SOUND_MIXER_DIGITAL1)
1148 #define SOUND_MIXER_WRITE_DIGITAL2	MIXER_WRITE(SOUND_MIXER_DIGITAL2)
1149 #define SOUND_MIXER_WRITE_DIGITAL3	MIXER_WRITE(SOUND_MIXER_DIGITAL3)
1150 #define SOUND_MIXER_WRITE_PHONEIN      	MIXER_WRITE(SOUND_MIXER_PHONEIN)
1151 #define SOUND_MIXER_WRITE_PHONEOUT	MIXER_WRITE(SOUND_MIXER_PHONEOUT)
1152 #define SOUND_MIXER_WRITE_RADIO		MIXER_WRITE(SOUND_MIXER_RADIO)
1153 #define SOUND_MIXER_WRITE_VIDEO		MIXER_WRITE(SOUND_MIXER_VIDEO)
1154 #define SOUND_MIXER_WRITE_MONITOR	MIXER_WRITE(SOUND_MIXER_MONITOR)
1155 
1156 #define SOUND_MIXER_WRITE_MUTE		MIXER_WRITE(SOUND_MIXER_MUTE)
1157 #define SOUND_MIXER_WRITE_ENHANCE	MIXER_WRITE(SOUND_MIXER_ENHANCE)
1158 #define SOUND_MIXER_WRITE_LOUD		MIXER_WRITE(SOUND_MIXER_LOUD)
1159 
1160 #define SOUND_MIXER_WRITE_RECSRC	MIXER_WRITE(SOUND_MIXER_RECSRC)
1161 
1162 typedef struct mixer_info {
1163   char id[16];
1164   char name[32];
1165   int  modify_counter;
1166   int fillers[10];
1167 } mixer_info;
1168 
1169 #define SOUND_MIXER_INFO		_IOR('M', 101, mixer_info)
1170 
1171 #define LEFT_CHN	0
1172 #define RIGHT_CHN	1
1173 
1174 /*
1175  * Level 2 event types for /dev/sequencer
1176  */
1177 
1178 /*
1179  * The 4 most significant bits of byte 0 specify the class of
1180  * the event:
1181  *
1182  *	0x8X = system level events,
1183  *	0x9X = device/port specific events, event[1] = device/port,
1184  *		The last 4 bits give the subtype:
1185  *			0x02	= Channel event (event[3] = chn).
1186  *			0x01	= note event (event[4] = note).
1187  *			(0x01 is not used alone but always with bit 0x02).
1188  *	       event[2] = MIDI message code (0x80=note off etc.)
1189  *
1190  */
1191 
1192 #define EV_SEQ_LOCAL		0x80
1193 #define EV_TIMING		0x81
1194 #define EV_CHN_COMMON		0x92
1195 #define EV_CHN_VOICE		0x93
1196 #define EV_SYSEX		0x94
1197 /*
1198  * Event types 200 to 220 are reserved for application use.
1199  * These numbers will not be used by the driver.
1200  */
1201 
1202 /*
1203  * Events for event type EV_CHN_VOICE
1204  */
1205 
1206 #define MIDI_NOTEOFF		0x80
1207 #define MIDI_NOTEON		0x90
1208 #define MIDI_KEY_PRESSURE	0xA0
1209 
1210 /*
1211  * Events for event type EV_CHN_COMMON
1212  */
1213 
1214 #define MIDI_CTL_CHANGE		0xB0
1215 #define MIDI_PGM_CHANGE		0xC0
1216 #define MIDI_CHN_PRESSURE	0xD0
1217 #define MIDI_PITCH_BEND		0xE0
1218 
1219 #define MIDI_SYSTEM_PREFIX	0xF0
1220 
1221 /*
1222  * Timer event types
1223  */
1224 #define TMR_WAIT_REL		1	/* Time relative to the prev time */
1225 #define TMR_WAIT_ABS		2	/* Absolute time since TMR_START */
1226 #define TMR_STOP		3
1227 #define TMR_START		4
1228 #define TMR_CONTINUE		5
1229 #define TMR_TEMPO		6
1230 #define TMR_ECHO		8
1231 #define TMR_CLOCK		9	/* MIDI clock */
1232 #define TMR_SPP			10	/* Song position pointer */
1233 #define TMR_TIMESIG		11	/* Time signature */
1234 
1235 /*
1236  *	Local event types
1237  */
1238 #define LOCL_STARTAUDIO		1
1239 
1240 #if (!defined(_KERNEL) && !defined(INKERNEL)) || defined(USE_SEQ_MACROS)
1241 /*
1242  *	Some convenience macros to simplify programming of the
1243  *	/dev/sequencer interface
1244  *
1245  *	These macros define the API which should be used when possible.
1246  */
1247 
1248 #ifndef USE_SIMPLE_MACROS
1249 void seqbuf_dump(void);	/* This function must be provided by programs */
1250 
1251 /* Sample seqbuf_dump() implementation:
1252  *
1253  *	SEQ_DEFINEBUF (2048);	-- Defines a buffer for 2048 bytes
1254  *
1255  *	int seqfd;		-- The file descriptor for /dev/sequencer.
1256  *
1257  *	void
1258  *	seqbuf_dump ()
1259  *	{
1260  *	  if (_seqbufptr)
1261  *	    if (write (seqfd, _seqbuf, _seqbufptr) == -1)
1262  *	      {
1263  *		perror ("write /dev/sequencer");
1264  *		exit (-1);
1265  *	      }
1266  *	  _seqbufptr = 0;
1267  *	}
1268  */
1269 
1270 #define SEQ_DEFINEBUF(len)		\
1271 	u_char _seqbuf[len]; int _seqbuflen = len;int _seqbufptr = 0
1272 #define SEQ_USE_EXTBUF()		\
1273 	extern u_char _seqbuf[]; \
1274 	extern int _seqbuflen;extern int _seqbufptr
1275 #define SEQ_DECLAREBUF()		SEQ_USE_EXTBUF()
1276 #define SEQ_PM_DEFINES			struct patmgr_info _pm_info
1277 #define _SEQ_NEEDBUF(len)		\
1278 	if ((_seqbufptr+(len)) > _seqbuflen) \
1279 		seqbuf_dump()
1280 #define _SEQ_ADVBUF(len)		_seqbufptr += len
1281 #define SEQ_DUMPBUF			seqbuf_dump
1282 #else
1283 /*
1284  * This variation of the sequencer macros is used just to format one event
1285  * using fixed buffer.
1286  *
1287  * The program using the macro library must define the following macros before
1288  * using this library.
1289  *
1290  * #define _seqbuf 		 name of the buffer (u_char[])
1291  * #define _SEQ_ADVBUF(len)	 If the applic needs to know the exact
1292  *				 size of the event, this macro can be used.
1293  *				 Otherwise this must be defined as empty.
1294  * #define _seqbufptr		 Define the name of index variable or 0 if
1295  *				 not required.
1296  */
1297 #define _SEQ_NEEDBUF(len)	/* empty */
1298 #endif
1299 
1300 #define PM_LOAD_PATCH(dev, bank, pgm)	\
1301 	(SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
1302 	_pm_info.device=dev, _pm_info.data.data8[0]=pgm, \
1303 	_pm_info.parm1 = bank, _pm_info.parm2 = 1, \
1304 	ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
1305 #define PM_LOAD_PATCHES(dev, bank, pgm) \
1306 	(SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
1307 	_pm_info.device=dev, bcopy( pgm, _pm_info.data.data8,  128), \
1308 	_pm_info.parm1 = bank, _pm_info.parm2 = 128, \
1309 	ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
1310 
1311 #define SEQ_VOLUME_MODE(dev, mode)	{ \
1312 	_SEQ_NEEDBUF(8);\
1313 	_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
1314 	_seqbuf[_seqbufptr+1] = SEQ_VOLMODE;\
1315 	_seqbuf[_seqbufptr+2] = (dev);\
1316 	_seqbuf[_seqbufptr+3] = (mode);\
1317 	_seqbuf[_seqbufptr+4] = 0;\
1318 	_seqbuf[_seqbufptr+5] = 0;\
1319 	_seqbuf[_seqbufptr+6] = 0;\
1320 	_seqbuf[_seqbufptr+7] = 0;\
1321 	_SEQ_ADVBUF(8);}
1322 
1323 /*
1324  * Midi voice messages
1325  */
1326 
1327 #define _CHN_VOICE(dev, event, chn, note, parm)  { \
1328 	_SEQ_NEEDBUF(8);\
1329 	_seqbuf[_seqbufptr] = EV_CHN_VOICE;\
1330 	_seqbuf[_seqbufptr+1] = (dev);\
1331 	_seqbuf[_seqbufptr+2] = (event);\
1332 	_seqbuf[_seqbufptr+3] = (chn);\
1333 	_seqbuf[_seqbufptr+4] = (note);\
1334 	_seqbuf[_seqbufptr+5] = (parm);\
1335 	_seqbuf[_seqbufptr+6] = (0);\
1336 	_seqbuf[_seqbufptr+7] = 0;\
1337 	_SEQ_ADVBUF(8);}
1338 
1339 #define SEQ_START_NOTE(dev, chn, note, vol) \
1340 		_CHN_VOICE(dev, MIDI_NOTEON, chn, note, vol)
1341 
1342 #define SEQ_STOP_NOTE(dev, chn, note, vol) \
1343 		_CHN_VOICE(dev, MIDI_NOTEOFF, chn, note, vol)
1344 
1345 #define SEQ_KEY_PRESSURE(dev, chn, note, pressure) \
1346 		_CHN_VOICE(dev, MIDI_KEY_PRESSURE, chn, note, pressure)
1347 
1348 /*
1349  * Midi channel messages
1350  */
1351 
1352 #define _CHN_COMMON(dev, event, chn, p1, p2, w14) { \
1353 	_SEQ_NEEDBUF(8);\
1354 	_seqbuf[_seqbufptr] = EV_CHN_COMMON;\
1355 	_seqbuf[_seqbufptr+1] = (dev);\
1356 	_seqbuf[_seqbufptr+2] = (event);\
1357 	_seqbuf[_seqbufptr+3] = (chn);\
1358 	_seqbuf[_seqbufptr+4] = (p1);\
1359 	_seqbuf[_seqbufptr+5] = (p2);\
1360 	*(short *)&_seqbuf[_seqbufptr+6] = (w14);\
1361 	_SEQ_ADVBUF(8);}
1362 /*
1363  * SEQ_SYSEX permits sending of sysex messages. (It may look that it permits
1364  * sending any MIDI bytes but it's absolutely not possible. Trying to do
1365  * so _will_ cause problems with MPU401 intelligent mode).
1366  *
1367  * Sysex messages are sent in blocks of 1 to 6 bytes. Longer messages must be
1368  * sent by calling SEQ_SYSEX() several times (there must be no other events
1369  * between them). First sysex fragment must have 0xf0 in the first byte
1370  * and the last byte (buf[len-1] of the last fragment must be 0xf7. No byte
1371  * between these sysex start and end markers cannot be larger than 0x7f. Also
1372  * lengths of each fragments (except the last one) must be 6.
1373  *
1374  * Breaking the above rules may work with some MIDI ports but is likely to
1375  * cause fatal problems with some other devices (such as MPU401).
1376  */
1377 #define SEQ_SYSEX(dev, buf, len) { \
1378 	int i, l=(len); if (l>6)l=6;\
1379 	_SEQ_NEEDBUF(8);\
1380 	_seqbuf[_seqbufptr] = EV_SYSEX;\
1381 	for(i=0;i<l;i++)_seqbuf[_seqbufptr+i+1] = (buf)[i];\
1382 	for(i=l;i<6;i++)_seqbuf[_seqbufptr+i+1] = 0xff;\
1383 	_SEQ_ADVBUF(8);}
1384 
1385 #define SEQ_CHN_PRESSURE(dev, chn, pressure) \
1386 	_CHN_COMMON(dev, MIDI_CHN_PRESSURE, chn, pressure, 0, 0)
1387 
1388 #define SEQ_SET_PATCH(dev, chn, patch) \
1389 	_CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0)
1390 
1391 #define SEQ_CONTROL(dev, chn, controller, value) \
1392 	_CHN_COMMON(dev, MIDI_CTL_CHANGE, chn, controller, 0, value)
1393 
1394 #define SEQ_BENDER(dev, chn, value) \
1395 	_CHN_COMMON(dev, MIDI_PITCH_BEND, chn, 0, 0, value)
1396 
1397 
1398 #define SEQ_V2_X_CONTROL(dev, voice, controller, value)	{ \
1399 	_SEQ_NEEDBUF(8);\
1400 	_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
1401 	_seqbuf[_seqbufptr+1] = SEQ_CONTROLLER;\
1402 	_seqbuf[_seqbufptr+2] = (dev);\
1403 	_seqbuf[_seqbufptr+3] = (voice);\
1404 	_seqbuf[_seqbufptr+4] = (controller);\
1405 	*(short *)&_seqbuf[_seqbufptr+5] = (value);\
1406 	_seqbuf[_seqbufptr+7] = 0;\
1407 	_SEQ_ADVBUF(8);}
1408 
1409 /*
1410  * The following 5 macros are incorrectly implemented and obsolete.
1411  * Use SEQ_BENDER and SEQ_CONTROL (with proper controller) instead.
1412  */
1413 
1414 #define SEQ_PITCHBEND(dev, voice, value) \
1415 	SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER, value)
1416 #define SEQ_BENDER_RANGE(dev, voice, value) \
1417 	SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER_RANGE, value)
1418 #define SEQ_EXPRESSION(dev, voice, value) \
1419 	SEQ_CONTROL(dev, voice, CTL_EXPRESSION, value*128)
1420 #define SEQ_MAIN_VOLUME(dev, voice, value) \
1421 	SEQ_CONTROL(dev, voice, CTL_MAIN_VOLUME, (value*16383)/100)
1422 #define SEQ_PANNING(dev, voice, pos) \
1423 	SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2)
1424 
1425 /*
1426  * Timing and syncronization macros
1427  */
1428 
1429 #define _TIMER_EVENT(ev, parm)		{ \
1430 	_SEQ_NEEDBUF(8);\
1431 	_seqbuf[_seqbufptr+0] = EV_TIMING; \
1432 	_seqbuf[_seqbufptr+1] = (ev); \
1433 	_seqbuf[_seqbufptr+2] = 0;\
1434 	_seqbuf[_seqbufptr+3] = 0;\
1435 	*(u_int *)&_seqbuf[_seqbufptr+4] = (parm); \
1436 	_SEQ_ADVBUF(8); \
1437 	}
1438 
1439 #define SEQ_START_TIMER()		_TIMER_EVENT(TMR_START, 0)
1440 #define SEQ_STOP_TIMER()		_TIMER_EVENT(TMR_STOP, 0)
1441 #define SEQ_CONTINUE_TIMER()		_TIMER_EVENT(TMR_CONTINUE, 0)
1442 #define SEQ_WAIT_TIME(ticks)		_TIMER_EVENT(TMR_WAIT_ABS, ticks)
1443 #define SEQ_DELTA_TIME(ticks)		_TIMER_EVENT(TMR_WAIT_REL, ticks)
1444 #define SEQ_ECHO_BACK(key)		_TIMER_EVENT(TMR_ECHO, key)
1445 #define SEQ_SET_TEMPO(value)		_TIMER_EVENT(TMR_TEMPO, value)
1446 #define SEQ_SONGPOS(pos)		_TIMER_EVENT(TMR_SPP, pos)
1447 #define SEQ_TIME_SIGNATURE(sig)		_TIMER_EVENT(TMR_TIMESIG, sig)
1448 
1449 /*
1450  * Local control events
1451  */
1452 
1453 #define _LOCAL_EVENT(ev, parm)		{ \
1454 	_SEQ_NEEDBUF(8);\
1455 	_seqbuf[_seqbufptr+0] = EV_SEQ_LOCAL; \
1456 	_seqbuf[_seqbufptr+1] = (ev); \
1457 	_seqbuf[_seqbufptr+2] = 0;\
1458 	_seqbuf[_seqbufptr+3] = 0;\
1459 	*(u_int *)&_seqbuf[_seqbufptr+4] = (parm); \
1460 	_SEQ_ADVBUF(8); \
1461 	}
1462 
1463 #define SEQ_PLAYAUDIO(devmask)		_LOCAL_EVENT(LOCL_STARTAUDIO, devmask)
1464 /*
1465  * Events for the level 1 interface only
1466  */
1467 
1468 #define SEQ_MIDIOUT(device, byte)	{ \
1469 	_SEQ_NEEDBUF(4);\
1470 	_seqbuf[_seqbufptr] = SEQ_MIDIPUTC;\
1471 	_seqbuf[_seqbufptr+1] = (byte);\
1472 	_seqbuf[_seqbufptr+2] = (device);\
1473 	_seqbuf[_seqbufptr+3] = 0;\
1474 	_SEQ_ADVBUF(4);}
1475 
1476 /*
1477  * Patch loading.
1478  */
1479 #define SEQ_WRPATCH(patchx, len)	{ \
1480 	if (_seqbufptr) seqbuf_dump(); \
1481 	if (write(seqfd, (char*)(patchx), len)==-1) \
1482 	   perror("Write patch: /dev/sequencer"); \
1483 	}
1484 
1485 #define SEQ_WRPATCH2(patchx, len)	\
1486 	( seqbuf_dump(), write(seqfd, (char*)(patchx), len) )
1487 
1488 #endif
1489 
1490 /*
1491  * Here I have moved all the aliases for ioctl names.
1492  */
1493 
1494 #define SNDCTL_DSP_SAMPLESIZE	SNDCTL_DSP_SETFMT
1495 #define SOUND_PCM_WRITE_BITS	SNDCTL_DSP_SETFMT
1496 #define SOUND_PCM_SETFMT	SNDCTL_DSP_SETFMT
1497 
1498 #define SOUND_PCM_WRITE_RATE	SNDCTL_DSP_SPEED
1499 #define SOUND_PCM_POST		SNDCTL_DSP_POST
1500 #define SOUND_PCM_RESET		SNDCTL_DSP_RESET
1501 #define SOUND_PCM_SYNC		SNDCTL_DSP_SYNC
1502 #define SOUND_PCM_SUBDIVIDE	SNDCTL_DSP_SUBDIVIDE
1503 #define SOUND_PCM_SETFRAGMENT	SNDCTL_DSP_SETFRAGMENT
1504 #define SOUND_PCM_GETFMTS	SNDCTL_DSP_GETFMTS
1505 #define SOUND_PCM_GETOSPACE	SNDCTL_DSP_GETOSPACE
1506 #define SOUND_PCM_GETISPACE	SNDCTL_DSP_GETISPACE
1507 #define SOUND_PCM_NONBLOCK	SNDCTL_DSP_NONBLOCK
1508 #define SOUND_PCM_GETCAPS	SNDCTL_DSP_GETCAPS
1509 #define SOUND_PCM_GETTRIGGER	SNDCTL_DSP_GETTRIGGER
1510 #define SOUND_PCM_SETTRIGGER	SNDCTL_DSP_SETTRIGGER
1511 #define SOUND_PCM_SETSYNCRO	SNDCTL_DSP_SETSYNCRO
1512 #define SOUND_PCM_GETIPTR	SNDCTL_DSP_GETIPTR
1513 #define SOUND_PCM_GETOPTR	SNDCTL_DSP_GETOPTR
1514 #define SOUND_PCM_MAPINBUF	SNDCTL_DSP_MAPINBUF
1515 #define SOUND_PCM_MAPOUTBUF	SNDCTL_DSP_MAPOUTBUF
1516 
1517 /***********************************************************************/
1518 
1519 /**
1520  * XXX OSSv4 defines -- some bits taken straight out of the new
1521  * sys/soundcard.h bundled with recent OSS releases.
1522  *
1523  * NB:  These macros and structures will be reorganized and inserted
1524  * 	in appropriate places throughout this file once the code begins
1525  * 	to take shape.
1526  *
1527  * @todo reorganize layout more like the 4Front version
1528  * @todo ask about maintaining __SIOWR vs. _IOWR ioctl cmd defines
1529  */
1530 
1531 /**
1532  * @note The @c OSSV4_EXPERIMENT macro is meant to wrap new development code
1533  * in the sound system relevant to adopting 4Front's OSSv4 specification.
1534  * Users should not enable this!  Really!
1535  */
1536 #if 0
1537 # define OSSV4_EXPERIMENT 1
1538 #else
1539 # undef OSSV4_EXPERIMENT
1540 #endif
1541 
1542 #ifdef SOUND_VERSION
1543 # undef SOUND_VERSION
1544 # define SOUND_VERSION	0x040000
1545 #endif	/* !SOUND_VERSION */
1546 
1547 #define OSS_LONGNAME_SIZE	64
1548 #define OSS_LABEL_SIZE		16
1549 #define OSS_DEVNODE_SIZE        32
1550 typedef char oss_longname_t[OSS_LONGNAME_SIZE];
1551 typedef char oss_label_t[OSS_LABEL_SIZE];
1552 typedef char oss_devnode_t[OSS_DEVNODE_SIZE];
1553 
1554 typedef struct audio_errinfo
1555 {
1556 	int		play_underruns;
1557 	int		rec_overruns;
1558 	unsigned int	play_ptradjust;
1559 	unsigned int	rec_ptradjust;
1560 	int		play_errorcount;
1561 	int		rec_errorcount;
1562 	int		play_lasterror;
1563 	int		rec_lasterror;
1564 	long		play_errorparm;
1565 	long		rec_errorparm;
1566 	int		filler[16];
1567 } audio_errinfo;
1568 
1569 #define SNDCTL_DSP_GETPLAYVOL           _IOR ('P', 24, int)
1570 #define SNDCTL_DSP_SETPLAYVOL           _IOWR('P', 24, int)
1571 #define SNDCTL_DSP_GETERROR             _IOR ('P', 25, audio_errinfo)
1572 
1573 
1574 /*
1575  ****************************************************************************
1576  * Sync groups for audio devices
1577  */
1578 typedef struct oss_syncgroup
1579 {
1580   int id;
1581   int mode;
1582   int filler[16];
1583 } oss_syncgroup;
1584 
1585 #define SNDCTL_DSP_SYNCGROUP            _IOWR('P', 28, oss_syncgroup)
1586 #define SNDCTL_DSP_SYNCSTART            _IOW ('P', 29, int)
1587 
1588 /*
1589  **************************************************************************
1590  * "cooked" mode enables software based conversions for sample rate, sample
1591  * format (bits) and number of channels (mono/stereo). These conversions are
1592  * required with some devices that support only one sample rate or just stereo
1593  * to let the applications to use other formats. The cooked mode is enabled by
1594  * default. However it's necessary to disable this mode when mmap() is used or
1595  * when very deterministic timing is required. SNDCTL_DSP_COOKEDMODE is an
1596  * optional call introduced in OSS 3.9.6f. It's _error return must be ignored_
1597  * since normally this call will return erno=EINVAL.
1598  *
1599  * SNDCTL_DSP_COOKEDMODE must be called immediately after open before doing
1600  * anything else. Otherwise the call will not have any effect.
1601  */
1602 #define SNDCTL_DSP_COOKEDMODE           _IOW ('P', 30, int)
1603 
1604 /*
1605  **************************************************************************
1606  * SNDCTL_DSP_SILENCE and SNDCTL_DSP_SKIP are new calls in OSS 3.99.0
1607  * that can be used to implement pause/continue during playback (no effect
1608  * on recording).
1609  */
1610 #define SNDCTL_DSP_SILENCE              _IO  ('P', 31)
1611 #define SNDCTL_DSP_SKIP                 _IO  ('P', 32)
1612 
1613 /*
1614  ****************************************************************************
1615  * Abort transfer (reset) functions for input and output
1616  */
1617 #define SNDCTL_DSP_HALT_INPUT		_IO  ('P', 33)
1618 #define SNDCTL_DSP_RESET_INPUT	SNDCTL_DSP_HALT_INPUT	/* Old name */
1619 #define SNDCTL_DSP_HALT_OUTPUT		_IO  ('P', 34)
1620 #define SNDCTL_DSP_RESET_OUTPUT	SNDCTL_DSP_HALT_OUTPUT	/* Old name */
1621 
1622 /*
1623  ****************************************************************************
1624  * Low water level control
1625  */
1626 #define SNDCTL_DSP_LOW_WATER		_IOW ('P', 34, int)
1627 
1628 /** @todo Get rid of OSS_NO_LONG_LONG references? */
1629 
1630 /*
1631  ****************************************************************************
1632  * 64 bit pointer support. Only available in environments that support
1633  * the 64 bit (long long) integer type.
1634  */
1635 #ifndef OSS_NO_LONG_LONG
1636 typedef struct
1637 {
1638   long long samples;
1639   int fifo_samples;
1640   int filler[32];		/* For future use */
1641 } oss_count_t;
1642 
1643 #define SNDCTL_DSP_CURRENT_IPTR		_IOR ('P', 35, oss_count_t)
1644 #define SNDCTL_DSP_CURRENT_OPTR		_IOR ('P', 36, oss_count_t)
1645 #endif
1646 
1647 /*
1648  ****************************************************************************
1649  * Interface for selecting recording sources and playback output routings.
1650  */
1651 #define SNDCTL_DSP_GET_RECSRC_NAMES     _IOR ('P', 37, oss_mixer_enuminfo)
1652 #define SNDCTL_DSP_GET_RECSRC           _IOR ('P', 38, int)
1653 #define SNDCTL_DSP_SET_RECSRC           _IOWR('P', 38, int)
1654 
1655 #define SNDCTL_DSP_GET_PLAYTGT_NAMES    _IOR ('P', 39, oss_mixer_enuminfo)
1656 #define SNDCTL_DSP_GET_PLAYTGT          _IOR ('P', 40, int)
1657 #define SNDCTL_DSP_SET_PLAYTGT          _IOWR('P', 40, int)
1658 #define SNDCTL_DSP_GETRECVOL            _IOR ('P', 41, int)
1659 #define SNDCTL_DSP_SETRECVOL            _IOWR('P', 41, int)
1660 
1661 /*
1662  ***************************************************************************
1663  * Some calls for setting the channel assignment with multi channel devices
1664  * (see the manual for details).                                                 */
1665 #define SNDCTL_DSP_GET_CHNORDER         _IOR ('P', 42, unsigned long long)
1666 #define SNDCTL_DSP_SET_CHNORDER         _IOWR('P', 42, unsigned long long)
1667 #       define CHID_UNDEF       0
1668 #       define CHID_L           1                                               #       define CHID_R           2
1669 #       define CHID_C           3
1670 #       define CHID_LFE         4
1671 #       define CHID_LS          5
1672 #       define CHID_RS          6
1673 #       define CHID_LR          7
1674 #       define CHID_RR          8
1675 #define CHNORDER_UNDEF          0x0000000000000000ULL
1676 #define CHNORDER_NORMAL         0x0000000087654321ULL
1677 
1678 #define MAX_PEAK_CHANNELS	128
1679 typedef unsigned short oss_peaks_t[MAX_PEAK_CHANNELS];
1680 #define SNDCTL_DSP_GETIPEAKS		_IOR('P', 43, oss_peaks_t)
1681 #define SNDCTL_DSP_GETOPEAKS		_IOR('P', 44, oss_peaks_t)
1682 #define SNDCTL_DSP_POLICY               _IOW('P', 45, int)    /* See the manual */
1683 
1684 /*
1685  * OSS_SYSIFO is obsolete. Use SNDCTL_SYSINFO insteads.
1686  */
1687 #define OSS_GETVERSION                  _IOR ('M', 118, int)
1688 
1689 /**
1690  * @brief	Argument for SNDCTL_SYSINFO ioctl.
1691  *
1692  * For use w/ the SNDCTL_SYSINFO ioctl available on audio (/dev/dsp*),
1693  * mixer, and MIDI devices.
1694  */
1695 typedef struct oss_sysinfo
1696 {
1697 	char	product[32];	/* For example OSS/Free, OSS/Linux or
1698 				   OSS/Solaris */
1699 	char	version[32];	/* For example 4.0a */
1700 	int	versionnum;	/* See OSS_GETVERSION */
1701 	char	options[128];	/* Reserved */
1702 
1703 	int	numaudios;	/* # of audio/dsp devices */
1704 	int	openedaudio[8];	/* Bit mask telling which audio devices
1705 				   are busy */
1706 
1707 	int	numsynths;	/* # of availavle synth devices */
1708 	int	nummidis;	/* # of available MIDI ports */
1709 	int	numtimers;	/* # of available timer devices */
1710 	int	nummixers;	/* # of mixer devices */
1711 
1712 	int	openedmidi[8];	/* Bit mask telling which midi devices
1713 				   are busy */
1714 	int	numcards;	/* Number of sound cards in the system */
1715 	int	numaudioengines;	/* Number of audio engines in the system */
1716 	char	license[16];	/* For example "GPL" or "CDDL" */
1717 	char	revision_info[256];	/* For internal use */
1718 	int	filler[172];	/* For future expansion (set to -1) */
1719 } oss_sysinfo;
1720 
1721 typedef struct oss_mixext
1722 {
1723   int dev;			/* Mixer device number */
1724   int ctrl;			/* Controller number */
1725   int type;			/* Entry type */
1726 #	define MIXT_DEVROOT	 0	/* Device root entry */
1727 #	define MIXT_GROUP	 1	/* Controller group */
1728 #	define MIXT_ONOFF	 2	/* OFF (0) or ON (1) */
1729 #	define MIXT_ENUM	 3	/* Enumerated (0 to maxvalue) */
1730 #	define MIXT_MONOSLIDER	 4	/* Mono slider (0 to 100) */
1731 #	define MIXT_STEREOSLIDER 5	/* Stereo slider (dual 0 to 100) */
1732 #	define MIXT_MESSAGE	 6	/* (Readable) textual message */
1733 #	define MIXT_MONOVU	 7	/* VU meter value (mono) */
1734 #	define MIXT_STEREOVU	 8	/* VU meter value (stereo) */
1735 #	define MIXT_MONOPEAK	 9	/* VU meter peak value (mono) */
1736 #	define MIXT_STEREOPEAK	10	/* VU meter peak value (stereo) */
1737 #	define MIXT_RADIOGROUP	11	/* Radio button group */
1738 #	define MIXT_MARKER	12	/* Separator between normal and extension entries */
1739 #	define MIXT_VALUE	13	/* Decimal value entry */
1740 #	define MIXT_HEXVALUE	14	/* Hexadecimal value entry */
1741 #	define MIXT_MONODB	15	/* Mono atten. slider (0 to -144) */
1742 #	define MIXT_STEREODB	16	/* Stereo atten. slider (dual 0 to -144) */
1743 #	define MIXT_SLIDER	17	/* Slider (mono) with full integer range */
1744 #	define MIXT_3D		18
1745 
1746   /* Possible value range (minvalue to maxvalue) */
1747   /* Note that maxvalue may also be smaller than minvalue */
1748   int maxvalue;
1749   int minvalue;
1750 
1751   int flags;
1752 #	define MIXF_READABLE	0x00000001	/* Has readable value */
1753 #	define MIXF_WRITEABLE	0x00000002	/* Has writeable value */
1754 #	define MIXF_POLL	0x00000004	/* May change itself */
1755 #	define MIXF_HZ		0x00000008	/* Herz scale */
1756 #	define MIXF_STRING	0x00000010	/* Use dynamic extensions for value */
1757 #	define MIXF_DYNAMIC	0x00000010	/* Supports dynamic extensions */
1758 #	define MIXF_OKFAIL	0x00000020	/* Interpret value as 1=OK, 0=FAIL */
1759 #	define MIXF_FLAT	0x00000040	/* Flat vertical space requirements */
1760 #	define MIXF_LEGACY	0x00000080	/* Legacy mixer control group */
1761   char id[16];			/* Mnemonic ID (mainly for internal use) */
1762   int parent;			/* Entry# of parent (group) node (-1 if root) */
1763 
1764   int dummy;			/* Internal use */
1765 
1766   int timestamp;
1767 
1768   char data[64];		/* Misc data (entry type dependent) */
1769   unsigned char enum_present[32];	/* Mask of allowed enum values */
1770   int control_no;		/* SOUND_MIXER_VOLUME..SOUND_MIXER_MIDI */
1771   /* (-1 means not indicated) */
1772 
1773 /*
1774  * The desc field is reserved for internal purposes of OSS. It should not be
1775  * used by applications.
1776  */
1777   unsigned int desc;
1778 #define MIXEXT_SCOPE_MASK			0x0000003f
1779 #define MIXEXT_SCOPE_OTHER			0x00000000
1780 #define MIXEXT_SCOPE_INPUT			0x00000001
1781 #define MIXEXT_SCOPE_OUTPUT			0x00000002
1782 #define MIXEXT_SCOPE_MONITOR			0x00000003
1783 #define MIXEXT_SCOPE_RECSWITCH			0x00000004
1784 
1785   char extname[32];
1786   int update_counter;
1787   int filler[7];
1788 } oss_mixext;
1789 
1790 typedef struct oss_mixext_root
1791 {
1792   char id[16];
1793   char name[48];
1794 } oss_mixext_root;
1795 
1796 typedef struct oss_mixer_value
1797 {
1798   int dev;
1799   int ctrl;
1800   int value;
1801   int flags;			/* Reserved for future use. Initialize to 0 */
1802   int timestamp;		/* Must be set to oss_mixext.timestamp */
1803   int filler[8];		/* Reserved for future use. Initialize to 0 */
1804 } oss_mixer_value;
1805 
1806 #define OSS_ENUM_MAXVALUE       255
1807 typedef struct oss_mixer_enuminfo
1808 {
1809 	int	dev;
1810 	int	ctrl;
1811 	int	nvalues;
1812 	int	version;                  /* Read the manual */
1813 	short	strindex[OSS_ENUM_MAXVALUE];
1814 	char	strings[3000];
1815 } oss_mixer_enuminfo;
1816 
1817 #define OPEN_READ       PCM_ENABLE_INPUT
1818 #define OPEN_WRITE      PCM_ENABLE_OUTPUT
1819 #define OPEN_READWRITE  (OPEN_READ|OPEN_WRITE)
1820 
1821 /**
1822  * @brief	Argument for SNDCTL_AUDIOINFO ioctl.
1823  *
1824  * For use w/ the SNDCTL_AUDIOINFO ioctl available on audio (/dev/dsp*)
1825  * devices.
1826  */
1827 typedef struct oss_audioinfo
1828 {
1829 	int	dev;		/* Audio device number */
1830 	char	name[64];
1831 	int	busy;		/* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
1832 	int	pid;
1833 	int	caps;		/* DSP_CAP_INPUT, DSP_CAP_OUTPUT */
1834 	int	iformats;
1835 	int	oformats;
1836 	int	magic;		/* Reserved for internal use */
1837 	char 	cmd[64];	/* Command using the device (if known) */
1838 	int	card_number;
1839 	int	port_number;
1840 	int	mixer_dev;
1841 	int	real_device;	/* Obsolete field. Replaced by devnode */
1842 	int	enabled;	/* 1=enabled, 0=device not ready at this
1843 				   moment */
1844 	int	flags;		/* For internal use only - no practical
1845 				   meaning */
1846 	int	min_rate;	/* Sample rate limits */
1847 	int	max_rate;
1848 	int	min_channels;	/* Number of channels supported */
1849 	int	max_channels;
1850 	int	binding;	/* DSP_BIND_FRONT, etc. 0 means undefined */
1851 	int	rate_source;
1852 	char	handle[32];
1853 	#define OSS_MAX_SAMPLE_RATES	20	/* Cannot be changed  */
1854 	unsigned int nrates;
1855 	unsigned int rates[OSS_MAX_SAMPLE_RATES]; /* Please read the manual before using these */
1856 	oss_longname_t	song_name;	/* Song name (if given) */
1857 	oss_label_t	label;		/* Device label (if given) */
1858 	int		latency;	/* In usecs, -1=unknown */
1859 	oss_devnode_t	devnode;	/* Device special file name (inside
1860 					   /dev) */
1861 	int next_play_engine;
1862 	int next_rec_engine;
1863 	int filler[184];
1864 } oss_audioinfo;
1865 
1866 typedef struct oss_mixerinfo
1867 {
1868   int dev;
1869   char id[16];
1870   char name[32];
1871   int modify_counter;
1872   int card_number;
1873   int port_number;
1874   char handle[32];
1875   int magic;			/* Reserved */
1876   int enabled;			/* Reserved */
1877   int caps;
1878 #define MIXER_CAP_VIRTUAL				0x00000001
1879   int flags;			/* Reserved */
1880   int nrext;
1881   /*
1882    * The priority field can be used to select the default (motherboard)
1883    * mixer device. The mixer with the highest priority is the
1884    * most preferred one. -2 or less means that this device cannot be used
1885    * as the default mixer.
1886    */
1887   int priority;
1888   int filler[254];		/* Reserved */
1889 } oss_mixerinfo;
1890 
1891 typedef struct oss_midi_info
1892 {
1893   int dev;			/* Midi device number */
1894   char name[64];
1895   int busy;			/* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
1896   int pid;
1897   char cmd[64];			/* Command using the device (if known) */
1898   int caps;
1899 #define MIDI_CAP_MPU401		0x00000001	/**** OBSOLETE ****/
1900 #define MIDI_CAP_INPUT		0x00000002
1901 #define MIDI_CAP_OUTPUT		0x00000004
1902 #define MIDI_CAP_INOUT		(MIDI_CAP_INPUT|MIDI_CAP_OUTPUT)
1903 #define MIDI_CAP_VIRTUAL	0x00000008	/* Pseudo device */
1904 #define MIDI_CAP_MTCINPUT	0x00000010	/* Supports SNDCTL_MIDI_MTCINPUT */
1905 #define MIDI_CAP_CLIENT		0x00000020	/* Virtual client side device */
1906 #define MIDI_CAP_SERVER		0x00000040	/* Virtual server side device */
1907 #define MIDI_CAP_INTERNAL	0x00000080	/* Internal (synth) device */
1908 #define MIDI_CAP_EXTERNAL	0x00000100	/* external (MIDI port) device */
1909 #define MIDI_CAP_PTOP		0x00000200	/* Point to point link to one device */
1910 #define MIDI_CAP_MTC		0x00000400	/* MTC/SMPTE (control) device */
1911   int magic;			/* Reserved for internal use */
1912   int card_number;
1913   int port_number;
1914   int enabled;			/* 1=enabled, 0=device not ready at this moment */
1915   int flags;			/* For internal use only - no practical meaning */
1916   char handle[32];
1917   oss_longname_t song_name;	/* Song name (if known) */
1918   oss_label_t label;		/* Device label (if given) */
1919   int latency;			/* In usecs, -1=unknown */
1920   int filler[244];
1921 } oss_midi_info;
1922 
1923 typedef struct oss_card_info
1924 {
1925   int card;
1926   char shortname[16];
1927   char longname[128];
1928   int flags;
1929   char hw_info[400];
1930   int intr_count, ack_count;
1931   int filler[154];
1932 } oss_card_info;
1933 
1934 #define SNDCTL_SYSINFO          _IOR ('X', 1, oss_sysinfo)
1935 #define OSS_SYSINFO             SNDCTL_SYSINFO /* Old name */
1936 
1937 #define SNDCTL_MIX_NRMIX	_IOR ('X', 2, int)
1938 #define SNDCTL_MIX_NREXT	_IOWR('X', 3, int)
1939 #define SNDCTL_MIX_EXTINFO	_IOWR('X', 4, oss_mixext)
1940 #define SNDCTL_MIX_READ		_IOWR('X', 5, oss_mixer_value)
1941 #define SNDCTL_MIX_WRITE	_IOWR('X', 6, oss_mixer_value)
1942 
1943 #define SNDCTL_AUDIOINFO	_IOWR('X', 7, oss_audioinfo)
1944 #define SNDCTL_MIX_ENUMINFO	_IOWR('X', 8, oss_mixer_enuminfo)
1945 #define SNDCTL_MIDIINFO		_IOWR('X', 9, oss_midi_info)
1946 #define SNDCTL_MIXERINFO	_IOWR('X',10, oss_mixerinfo)
1947 #define SNDCTL_CARDINFO		_IOWR('X',11, oss_card_info)
1948 #define SNDCTL_ENGINEINFO	_IOWR('X',12, oss_audioinfo)
1949 #define SNDCTL_AUDIOINFO_EX	_IOWR('X',13, oss_audioinfo)
1950 
1951 /*
1952  * Few more "globally" available ioctl calls.
1953  */
1954 #define SNDCTL_SETSONG          _IOW ('Y', 2, oss_longname_t)
1955 #define SNDCTL_GETSONG          _IOR ('Y', 2, oss_longname_t)
1956 #define SNDCTL_SETNAME          _IOW ('Y', 3, oss_longname_t)
1957 #define SNDCTL_SETLABEL         _IOW ('Y', 4, oss_label_t)
1958 #define SNDCTL_GETLABEL         _IOR ('Y', 4, oss_label_t)
1959 
1960 #endif	/* !_SYS_SOUNDCARD_H_ */
1961