xref: /freebsd/sys/sys/soundcard.h (revision 780fb4a2)
1 /*
2  * soundcard.h
3  */
4 
5 /*-
6  * SPDX-License-Identifier: BSD-2-Clause
7  *
8  * Copyright by Hannu Savolainen 1993 / 4Front Technologies 1993-2006
9  * Modified for the new FreeBSD sound driver by Luigi Rizzo, 1997
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above
17  *    copyright notice, this list of conditions and the following
18  *    disclaimer in the documentation and/or other materials provided
19  *    with the distribution.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
24  * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR
25  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32  * POSSIBILITY OF SUCH DAMAGE.
33  *
34  * $FreeBSD$
35  */
36 
37 /*
38  * Unless coordinating changes with 4Front Technologies, do NOT make any
39  * modifications to ioctl commands, types, etc. that would break
40  * compatibility with the OSS API.
41  */
42 
43 #ifndef _SYS_SOUNDCARD_H_
44 #define _SYS_SOUNDCARD_H_
45  /*
46   * If you make modifications to this file, please contact me before
47   * distributing the modified version. There is already enough
48   * diversity in the world.
49   *
50   * Regards,
51   * Hannu Savolainen
52   * hannu@voxware.pp.fi
53   *
54   **********************************************************************
55   * PS.	The Hacker's Guide to VoxWare available from
56   *     nic.funet.fi:pub/Linux/ALPHA/sound. The file is
57   *	snd-sdk-doc-0.1.ps.gz (gzipped postscript). It contains
58   *	some useful information about programming with VoxWare.
59   *	(NOTE! The pub/Linux/ALPHA/ directories are hidden. You have
60   *	to cd inside them before the files are accessible.)
61   **********************************************************************
62   */
63 
64 /*
65  * SOUND_VERSION is only used by the voxware driver. Hopefully apps
66  * should not depend on it, but rather look at the capabilities
67  * of the driver in the kernel!
68  */
69 #define SOUND_VERSION  301
70 #define VOXWARE		/* does this have any use ? */
71 
72 /*
73  * Supported card ID numbers (Should be somewhere else? We keep
74  * them here just for compativility with the old driver, but these
75  * constants are of little or no use).
76  */
77 
78 #define SNDCARD_ADLIB          1
79 #define SNDCARD_SB             2
80 #define SNDCARD_PAS            3
81 #define SNDCARD_GUS            4
82 #define SNDCARD_MPU401         5
83 #define SNDCARD_SB16           6
84 #define SNDCARD_SB16MIDI       7
85 #define SNDCARD_UART6850       8
86 #define SNDCARD_GUS16          9
87 #define SNDCARD_MSS            10
88 #define SNDCARD_PSS            11
89 #define SNDCARD_SSCAPE         12
90 #define SNDCARD_PSS_MPU        13
91 #define SNDCARD_PSS_MSS        14
92 #define SNDCARD_SSCAPE_MSS     15
93 #define SNDCARD_TRXPRO         16
94 #define SNDCARD_TRXPRO_SB      17
95 #define SNDCARD_TRXPRO_MPU     18
96 #define SNDCARD_MAD16          19
97 #define SNDCARD_MAD16_MPU      20
98 #define SNDCARD_CS4232         21
99 #define SNDCARD_CS4232_MPU     22
100 #define SNDCARD_MAUI           23
101 #define SNDCARD_PSEUDO_MSS     24
102 #define SNDCARD_AWE32          25
103 #define SNDCARD_NSS            26
104 #define SNDCARD_UART16550      27
105 #define SNDCARD_OPL            28
106 
107 #include <sys/types.h>
108 #include <machine/endian.h>
109 #ifndef _IOWR
110 #include <sys/ioccom.h>
111 #endif  /* !_IOWR */
112 
113 /*
114  * The first part of this file contains the new FreeBSD sound ioctl
115  * interface. Tries to minimize the number of different ioctls, and
116  * to be reasonably general.
117  *
118  * 970821: some of the new calls have not been implemented yet.
119  */
120 
121 /*
122  * the following three calls extend the generic file descriptor
123  * interface. AIONWRITE is the dual of FIONREAD, i.e. returns the max
124  * number of bytes for a write operation to be non-blocking.
125  *
126  * AIOGSIZE/AIOSSIZE are used to change the behaviour of the device,
127  * from a character device (default) to a block device. In block mode,
128  * (not to be confused with blocking mode) the main difference for the
129  * application is that select() will return only when a complete
130  * block can be read/written to the device, whereas in character mode
131  * select will return true when one byte can be exchanged. For audio
132  * devices, character mode makes select almost useless since one byte
133  * will always be ready by the next sample time (which is often only a
134  * handful of microseconds away).
135  * Use a size of 0 or 1 to return to character mode.
136  */
137 #define	AIONWRITE   _IOR('A', 10, int)   /* get # bytes to write */
138 struct snd_size {
139     int play_size;
140     int rec_size;
141 };
142 #define	AIOGSIZE    _IOR('A', 11, struct snd_size)/* read current blocksize */
143 #define	AIOSSIZE    _IOWR('A', 11, struct snd_size)  /* sets blocksize */
144 
145 /*
146  * The following constants define supported audio formats. The
147  * encoding follows voxware conventions, i.e. 1 bit for each supported
148  * format. We extend it by using bit 31 (RO) to indicate full-duplex
149  * capability, and bit 29 (RO) to indicate that the card supports/
150  * needs different formats on capture & playback channels.
151  * Bit 29 (RW) is used to indicate/ask stereo.
152  *
153  * The number of bits required to store the sample is:
154  *  o  4 bits for the IDA ADPCM format,
155  *  o  8 bits for 8-bit formats, mu-law and A-law,
156  *  o  16 bits for the 16-bit formats, and
157  *  o  32 bits for the 24/32-bit formats.
158  *  o  undefined for the MPEG audio format.
159  */
160 
161 #define AFMT_QUERY	0x00000000	/* Return current format */
162 #define AFMT_MU_LAW	0x00000001	/* Logarithmic mu-law */
163 #define AFMT_A_LAW	0x00000002	/* Logarithmic A-law */
164 #define AFMT_IMA_ADPCM	0x00000004	/* A 4:1 compressed format where 16-bit
165 					 * squence represented using the
166 					 * the average 4 bits per sample */
167 #define AFMT_U8		0x00000008	/* Unsigned 8-bit */
168 #define AFMT_S16_LE	0x00000010	/* Little endian signed 16-bit */
169 #define AFMT_S16_BE	0x00000020	/* Big endian signed 16-bit */
170 #define AFMT_S8		0x00000040	/* Signed 8-bit */
171 #define AFMT_U16_LE	0x00000080	/* Little endian unsigned 16-bit */
172 #define AFMT_U16_BE	0x00000100	/* Big endian unsigned 16-bit */
173 #define AFMT_MPEG	0x00000200	/* MPEG MP2/MP3 audio */
174 #define AFMT_AC3	0x00000400	/* Dolby Digital AC3 */
175 
176 /*
177  * 32-bit formats below used for 24-bit audio data where the data is stored
178  * in the 24 most significant bits and the least significant bits are not used
179  * (should be set to 0).
180  */
181 #define AFMT_S32_LE	0x00001000	/* Little endian signed 32-bit */
182 #define AFMT_S32_BE	0x00002000	/* Big endian signed 32-bit */
183 #define AFMT_U32_LE	0x00004000	/* Little endian unsigned 32-bit */
184 #define AFMT_U32_BE	0x00008000	/* Big endian unsigned 32-bit */
185 #define AFMT_S24_LE	0x00010000	/* Little endian signed 24-bit */
186 #define AFMT_S24_BE	0x00020000	/* Big endian signed 24-bit */
187 #define AFMT_U24_LE	0x00040000	/* Little endian unsigned 24-bit */
188 #define AFMT_U24_BE	0x00080000	/* Big endian unsigned 24-bit */
189 
190 /* Machine dependent AFMT_* definitions. */
191 #if BYTE_ORDER == LITTLE_ENDIAN
192 #define AFMT_S16_NE	AFMT_S16_LE
193 #define AFMT_S24_NE	AFMT_S24_LE
194 #define AFMT_S32_NE	AFMT_S32_LE
195 #define AFMT_U16_NE	AFMT_U16_LE
196 #define AFMT_U24_NE	AFMT_U24_LE
197 #define AFMT_U32_NE	AFMT_U32_LE
198 #define AFMT_S16_OE	AFMT_S16_BE
199 #define AFMT_S24_OE	AFMT_S24_BE
200 #define AFMT_S32_OE	AFMT_S32_BE
201 #define AFMT_U16_OE	AFMT_U16_BE
202 #define AFMT_U24_OE	AFMT_U24_BE
203 #define AFMT_U32_OE	AFMT_U32_BE
204 #else
205 #define AFMT_S16_OE	AFMT_S16_LE
206 #define AFMT_S24_OE	AFMT_S24_LE
207 #define AFMT_S32_OE	AFMT_S32_LE
208 #define AFMT_U16_OE	AFMT_U16_LE
209 #define AFMT_U24_OE	AFMT_U24_LE
210 #define AFMT_U32_OE	AFMT_U32_LE
211 #define AFMT_S16_NE	AFMT_S16_BE
212 #define AFMT_S24_NE	AFMT_S24_BE
213 #define AFMT_S32_NE	AFMT_S32_BE
214 #define AFMT_U16_NE	AFMT_U16_BE
215 #define AFMT_U24_NE	AFMT_U24_BE
216 #define AFMT_U32_NE	AFMT_U32_BE
217 #endif
218 
219 #define AFMT_STEREO	0x10000000	/* can do/want stereo	*/
220 
221 /*
222  * the following are really capabilities
223  */
224 #define AFMT_WEIRD	0x20000000	/* weird hardware...	*/
225     /*
226      * AFMT_WEIRD reports that the hardware might need to operate
227      * with different formats in the playback and capture
228      * channels when operating in full duplex.
229      * As an example, SoundBlaster16 cards only support U8 in one
230      * direction and S16 in the other one, and applications should
231      * be aware of this limitation.
232      */
233 #define AFMT_FULLDUPLEX	0x80000000	/* can do full duplex	*/
234 
235 /*
236  * The following structure is used to get/set format and sampling rate.
237  * While it would be better to have things such as stereo, bits per
238  * sample, endiannes, etc split in different variables, it turns out
239  * that formats are not that many, and not all combinations are possible.
240  * So we followed the Voxware approach of associating one bit to each
241  * format.
242  */
243 
244 typedef struct _snd_chan_param {
245     u_long	play_rate;	/* sampling rate			*/
246     u_long	rec_rate;	/* sampling rate			*/
247     u_long	play_format;	/* everything describing the format	*/
248     u_long	rec_format;	/* everything describing the format	*/
249 } snd_chan_param;
250 #define	AIOGFMT    _IOR('f', 12, snd_chan_param)   /* get format */
251 #define	AIOSFMT    _IOWR('f', 12, snd_chan_param)  /* sets format */
252 
253 /*
254  * The following structure is used to get/set the mixer setting.
255  * Up to 32 mixers are supported, each one with up to 32 channels.
256  */
257 typedef struct _snd_mix_param {
258     u_char	subdev;	/* which output				*/
259     u_char	line;	/* which input				*/
260     u_char	left,right; /* volumes, 0..255, 0 = mute	*/
261 } snd_mix_param ;
262 
263 /* XXX AIOGMIX, AIOSMIX not implemented yet */
264 #define AIOGMIX	_IOWR('A', 13, snd_mix_param)	/* return mixer status */
265 #define AIOSMIX	_IOWR('A', 14, snd_mix_param)	/* sets mixer status   */
266 
267 /*
268  * channel specifiers used in AIOSTOP and AIOSYNC
269  */
270 #define	AIOSYNC_PLAY	0x1	/* play chan */
271 #define	AIOSYNC_CAPTURE	0x2	/* capture chan */
272 /* AIOSTOP stop & flush a channel, returns the residual count */
273 #define	AIOSTOP	_IOWR ('A', 15, int)
274 
275 /* alternate method used to notify the sync condition */
276 #define	AIOSYNC_SIGNAL	0x100
277 #define	AIOSYNC_SELECT	0x200
278 
279 /* what the 'pos' field refers to */
280 #define AIOSYNC_READY	0x400
281 #define AIOSYNC_FREE	0x800
282 
283 typedef struct _snd_sync_parm {
284     long chan ; /* play or capture channel, plus modifier */
285     long pos;
286 } snd_sync_parm;
287 #define	AIOSYNC	_IOWR ('A', 15, snd_sync_parm)	/* misc. synchronization */
288 
289 /*
290  * The following is used to return device capabilities. If the structure
291  * passed to the ioctl is zeroed, default values are returned for rate
292  * and formats, a bitmap of available mixers is returned, and values
293  * (inputs, different levels) for the first one are returned.
294  *
295  * If  formats, mixers, inputs are instantiated, then detailed info
296  * are returned depending on the call.
297  */
298 typedef struct _snd_capabilities {
299     u_long	rate_min, rate_max;	/* min-max sampling rate */
300     u_long	formats;
301     u_long	bufsize; /* DMA buffer size */
302     u_long	mixers; /* bitmap of available mixers */
303     u_long	inputs; /* bitmap of available inputs (per mixer) */
304     u_short	left, right;	/* how many levels are supported */
305 } snd_capabilities;
306 #define AIOGCAP	_IOWR('A', 15, snd_capabilities)	/* get capabilities */
307 
308 /*
309  * here is the old (Voxware) ioctl interface
310  */
311 
312 /*
313  * IOCTL Commands for /dev/sequencer
314  */
315 
316 #define SNDCTL_SEQ_RESET	_IO  ('Q', 0)
317 #define SNDCTL_SEQ_SYNC		_IO  ('Q', 1)
318 #define SNDCTL_SYNTH_INFO	_IOWR('Q', 2, struct synth_info)
319 #define SNDCTL_SEQ_CTRLRATE	_IOWR('Q', 3, int) /* Set/get timer res.(hz) */
320 #define SNDCTL_SEQ_GETOUTCOUNT	_IOR ('Q', 4, int)
321 #define SNDCTL_SEQ_GETINCOUNT	_IOR ('Q', 5, int)
322 #define SNDCTL_SEQ_PERCMODE	_IOW ('Q', 6, int)
323 #define SNDCTL_FM_LOAD_INSTR	_IOW ('Q', 7, struct sbi_instrument)	/* Valid for FM only */
324 #define SNDCTL_SEQ_TESTMIDI	_IOW ('Q', 8, int)
325 #define SNDCTL_SEQ_RESETSAMPLES	_IOW ('Q', 9, int)
326 #define SNDCTL_SEQ_NRSYNTHS	_IOR ('Q',10, int)
327 #define SNDCTL_SEQ_NRMIDIS	_IOR ('Q',11, int)
328 #define SNDCTL_MIDI_INFO	_IOWR('Q',12, struct midi_info)
329 #define SNDCTL_SEQ_THRESHOLD	_IOW ('Q',13, int)
330 #define SNDCTL_SEQ_TRESHOLD	SNDCTL_SEQ_THRESHOLD	/* there was once a typo */
331 #define SNDCTL_SYNTH_MEMAVL	_IOWR('Q',14, int) /* in=dev#, out=memsize */
332 #define SNDCTL_FM_4OP_ENABLE	_IOW ('Q',15, int) /* in=dev# */
333 #define SNDCTL_PMGR_ACCESS	_IOWR('Q',16, struct patmgr_info)
334 #define SNDCTL_SEQ_PANIC	_IO  ('Q',17)
335 #define SNDCTL_SEQ_OUTOFBAND	_IOW ('Q',18, struct seq_event_rec)
336 #define SNDCTL_SEQ_GETTIME	_IOR ('Q',19, int)
337 
338 struct seq_event_rec {
339 	u_char arr[8];
340 };
341 
342 #define SNDCTL_TMR_TIMEBASE	_IOWR('T', 1, int)
343 #define SNDCTL_TMR_START	_IO  ('T', 2)
344 #define SNDCTL_TMR_STOP		_IO  ('T', 3)
345 #define SNDCTL_TMR_CONTINUE	_IO  ('T', 4)
346 #define SNDCTL_TMR_TEMPO	_IOWR('T', 5, int)
347 #define SNDCTL_TMR_SOURCE	_IOWR('T', 6, int)
348 #   define TMR_INTERNAL		0x00000001
349 #   define TMR_EXTERNAL		0x00000002
350 #	define TMR_MODE_MIDI	0x00000010
351 #	define TMR_MODE_FSK	0x00000020
352 #	define TMR_MODE_CLS	0x00000040
353 #	define TMR_MODE_SMPTE	0x00000080
354 #define SNDCTL_TMR_METRONOME	_IOW ('T', 7, int)
355 #define SNDCTL_TMR_SELECT	_IOW ('T', 8, int)
356 
357 /*
358  *	Endian aware patch key generation algorithm.
359  */
360 
361 #if defined(_AIX) || defined(AIX)
362 #  define _PATCHKEY(id) (0xfd00|id)
363 #else
364 #  define _PATCHKEY(id) ((id<<8)|0xfd)
365 #endif
366 
367 /*
368  *	Sample loading mechanism for internal synthesizers (/dev/sequencer)
369  *	The following patch_info structure has been designed to support
370  *	Gravis UltraSound. It tries to be universal format for uploading
371  *	sample based patches but is probably too limited.
372  */
373 
374 struct patch_info {
375 /*		u_short key;		 Use GUS_PATCH here */
376 	short key;		 /* Use GUS_PATCH here */
377 #define GUS_PATCH	_PATCHKEY(0x04)
378 #define OBSOLETE_GUS_PATCH	_PATCHKEY(0x02)
379 
380 	short device_no;	/* Synthesizer number */
381 	short instr_no;		/* Midi pgm# */
382 
383 	u_long mode;
384 /*
385  * The least significant byte has the same format than the GUS .PAT
386  * files
387  */
388 #define WAVE_16_BITS	0x01	/* bit 0 = 8 or 16 bit wave data. */
389 #define WAVE_UNSIGNED	0x02	/* bit 1 = Signed - Unsigned data. */
390 #define WAVE_LOOPING	0x04	/* bit 2 = looping enabled-1. */
391 #define WAVE_BIDIR_LOOP	0x08	/* bit 3 = Set is bidirectional looping. */
392 #define WAVE_LOOP_BACK	0x10	/* bit 4 = Set is looping backward. */
393 #define WAVE_SUSTAIN_ON	0x20	/* bit 5 = Turn sustaining on. (Env. pts. 3)*/
394 #define WAVE_ENVELOPES	0x40	/* bit 6 = Enable envelopes - 1 */
395 				/* 	(use the env_rate/env_offs fields). */
396 /* Linux specific bits */
397 #define WAVE_VIBRATO	0x00010000	/* The vibrato info is valid */
398 #define WAVE_TREMOLO	0x00020000	/* The tremolo info is valid */
399 #define WAVE_SCALE	0x00040000	/* The scaling info is valid */
400 /* Other bits must be zeroed */
401 
402 	long len;	/* Size of the wave data in bytes */
403 	long loop_start, loop_end; /* Byte offsets from the beginning */
404 
405 /*
406  * The base_freq and base_note fields are used when computing the
407  * playback speed for a note. The base_note defines the tone frequency
408  * which is heard if the sample is played using the base_freq as the
409  * playback speed.
410  *
411  * The low_note and high_note fields define the minimum and maximum note
412  * frequencies for which this sample is valid. It is possible to define
413  * more than one samples for an instrument number at the same time. The
414  * low_note and high_note fields are used to select the most suitable one.
415  *
416  * The fields base_note, high_note and low_note should contain
417  * the note frequency multiplied by 1000. For example value for the
418  * middle A is 440*1000.
419  */
420 
421 	u_int base_freq;
422 	u_long base_note;
423 	u_long high_note;
424 	u_long low_note;
425 	int panning;	/* -128=left, 127=right */
426 	int detuning;
427 
428 /*	New fields introduced in version 1.99.5	*/
429 
430        /* Envelope. Enabled by mode bit WAVE_ENVELOPES	*/
431 	u_char	env_rate[ 6 ];	 /* GUS HW ramping rate */
432 	u_char	env_offset[ 6 ]; /* 255 == 100% */
433 
434 	/*
435 	 * The tremolo, vibrato and scale info are not supported yet.
436 	 * Enable by setting the mode bits WAVE_TREMOLO, WAVE_VIBRATO or
437 	 * WAVE_SCALE
438 	 */
439 
440 	u_char	tremolo_sweep;
441 	u_char	tremolo_rate;
442 	u_char	tremolo_depth;
443 
444 	u_char	vibrato_sweep;
445 	u_char	vibrato_rate;
446 	u_char	vibrato_depth;
447 
448 	int		scale_frequency;
449 	u_int	scale_factor;		/* from 0 to 2048 or 0 to 2 */
450 
451 	int		volume;
452 	int		spare[4];
453 	char data[1];	/* The waveform data starts here */
454 };
455 
456 struct sysex_info {
457 	short key;		/* Use GUS_PATCH here */
458 #define SYSEX_PATCH	_PATCHKEY(0x05)
459 #define MAUI_PATCH	_PATCHKEY(0x06)
460 	short device_no;	/* Synthesizer number */
461 	long len;	/* Size of the sysex data in bytes */
462 	u_char data[1];	/* Sysex data starts here */
463 };
464 
465 /*
466  * Patch management interface (/dev/sequencer, /dev/patmgr#)
467  * Don't use these calls if you want to maintain compatibility with
468  * the future versions of the driver.
469  */
470 
471 #define PS_NO_PATCHES		0	/* No patch support on device */
472 #define	PS_MGR_NOT_OK		1	/* Plain patch support (no mgr) */
473 #define	PS_MGR_OK		2	/* Patch manager supported */
474 #define	PS_MANAGED		3	/* Patch manager running */
475 
476 #define SNDCTL_PMGR_IFACE		_IOWR('P', 1, struct patmgr_info)
477 
478 /*
479  * The patmgr_info is a fixed size structure which is used for two
480  * different purposes. The intended use is for communication between
481  * the application using /dev/sequencer and the patch manager daemon
482  * associated with a synthesizer device (ioctl(SNDCTL_PMGR_ACCESS)).
483  *
484  * This structure is also used with ioctl(SNDCTL_PGMR_IFACE) which allows
485  * a patch manager daemon to read and write device parameters. This
486  * ioctl available through /dev/sequencer also. Avoid using it since it's
487  * extremely hardware dependent. In addition access trough /dev/sequencer
488  * may confuse the patch manager daemon.
489  */
490 
491 struct patmgr_info {	/* Note! size must be < 4k since kmalloc() is used */
492 	  u_long key;	/* Don't worry. Reserved for communication
493 	  			   between the patch manager and the driver. */
494 #define PM_K_EVENT		1 /* Event from the /dev/sequencer driver */
495 #define PM_K_COMMAND		2 /* Request from an application */
496 #define PM_K_RESPONSE		3 /* From patmgr to application */
497 #define PM_ERROR		4 /* Error returned by the patmgr */
498 	  int device;
499 	  int command;
500 
501 /*
502  * Commands 0x000 to 0xfff reserved for patch manager programs
503  */
504 #define PM_GET_DEVTYPE	1	/* Returns type of the patch mgr interface of dev */
505 #define		PMTYPE_FM2	1	/* 2 OP fm */
506 #define		PMTYPE_FM4	2	/* Mixed 4 or 2 op FM (OPL-3) */
507 #define		PMTYPE_WAVE	3	/* Wave table synthesizer (GUS) */
508 #define PM_GET_NRPGM	2	/* Returns max # of midi programs in parm1 */
509 #define PM_GET_PGMMAP	3	/* Returns map of loaded midi programs in data8 */
510 #define PM_GET_PGM_PATCHES 4	/* Return list of patches of a program (parm1) */
511 #define PM_GET_PATCH	5	/* Return patch header of patch parm1 */
512 #define PM_SET_PATCH	6	/* Set patch header of patch parm1 */
513 #define PM_READ_PATCH	7	/* Read patch (wave) data */
514 #define PM_WRITE_PATCH	8	/* Write patch (wave) data */
515 
516 /*
517  * Commands 0x1000 to 0xffff are for communication between the patch manager
518  * and the client
519  */
520 #define _PM_LOAD_PATCH	0x100
521 
522 /*
523  * Commands above 0xffff reserved for device specific use
524  */
525 
526 	long parm1;
527 	long parm2;
528 	long parm3;
529 
530 	union {
531 		u_char data8[4000];
532 		u_short data16[2000];
533 		u_long data32[1000];
534 		struct patch_info patch;
535 	} data;
536 };
537 
538 /*
539  * When a patch manager daemon is present, it will be informed by the
540  * driver when something important happens. For example when the
541  * /dev/sequencer is opened or closed. A record with key == PM_K_EVENT is
542  * returned. The command field contains the event type:
543  */
544 #define PM_E_OPENED		1	/* /dev/sequencer opened */
545 #define PM_E_CLOSED		2	/* /dev/sequencer closed */
546 #define PM_E_PATCH_RESET	3	/* SNDCTL_RESETSAMPLES called */
547 #define PM_E_PATCH_LOADED	4	/* A patch has been loaded by appl */
548 
549 /*
550  * /dev/sequencer input events.
551  *
552  * The data written to the /dev/sequencer is a stream of events. Events
553  * are records of 4 or 8 bytes. The first byte defines the size.
554  * Any number of events can be written with a write call. There
555  * is a set of macros for sending these events. Use these macros if you
556  * want to maximize portability of your program.
557  *
558  * Events SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO. Are also input events.
559  * (All input events are currently 4 bytes long. Be prepared to support
560  * 8 byte events also. If you receive any event having first byte >= 128,
561  * it's a 8 byte event.
562  *
563  * The events are documented at the end of this file.
564  *
565  * Normal events (4 bytes)
566  * There is also a 8 byte version of most of the 4 byte events. The
567  * 8 byte one is recommended.
568  */
569 #define SEQ_NOTEOFF		0
570 #define SEQ_FMNOTEOFF		SEQ_NOTEOFF	/* Just old name */
571 #define SEQ_NOTEON		1
572 #define	SEQ_FMNOTEON		SEQ_NOTEON
573 #define SEQ_WAIT		TMR_WAIT_ABS
574 #define SEQ_PGMCHANGE		3
575 #define SEQ_FMPGMCHANGE		SEQ_PGMCHANGE
576 #define SEQ_SYNCTIMER		TMR_START
577 #define SEQ_MIDIPUTC		5
578 #define SEQ_DRUMON		6	/*** OBSOLETE ***/
579 #define SEQ_DRUMOFF		7	/*** OBSOLETE ***/
580 #define SEQ_ECHO		TMR_ECHO	/* For synching programs with output */
581 #define SEQ_AFTERTOUCH		9
582 #define SEQ_CONTROLLER		10
583 
584 /*
585  *	Midi controller numbers
586  *
587  * Controllers 0 to 31 (0x00 to 0x1f) and 32 to 63 (0x20 to 0x3f)
588  * are continuous controllers.
589  * In the MIDI 1.0 these controllers are sent using two messages.
590  * Controller numbers 0 to 31 are used to send the MSB and the
591  * controller numbers 32 to 63 are for the LSB. Note that just 7 bits
592  * are used in MIDI bytes.
593  */
594 
595 #define	CTL_BANK_SELECT		0x00
596 #define	CTL_MODWHEEL		0x01
597 #define CTL_BREATH		0x02
598 /*	undefined		0x03 */
599 #define CTL_FOOT		0x04
600 #define CTL_PORTAMENTO_TIME	0x05
601 #define CTL_DATA_ENTRY		0x06
602 #define CTL_MAIN_VOLUME		0x07
603 #define CTL_BALANCE		0x08
604 /*	undefined		0x09 */
605 #define CTL_PAN			0x0a
606 #define CTL_EXPRESSION		0x0b
607 /*	undefined		0x0c - 0x0f */
608 #define CTL_GENERAL_PURPOSE1	0x10
609 #define CTL_GENERAL_PURPOSE2	0x11
610 #define CTL_GENERAL_PURPOSE3	0x12
611 #define CTL_GENERAL_PURPOSE4	0x13
612 /*	undefined		0x14 - 0x1f */
613 
614 /*	undefined		0x20 */
615 
616 /*
617  * The controller numbers 0x21 to 0x3f are reserved for the
618  * least significant bytes of the controllers 0x00 to 0x1f.
619  * These controllers are not recognised by the driver.
620  *
621  * Controllers 64 to 69 (0x40 to 0x45) are on/off switches.
622  * 0=OFF and 127=ON (intermediate values are possible)
623  */
624 #define CTL_DAMPER_PEDAL	0x40
625 #define CTL_SUSTAIN		CTL_DAMPER_PEDAL	/* Alias */
626 #define CTL_HOLD		CTL_DAMPER_PEDAL	/* Alias */
627 #define CTL_PORTAMENTO		0x41
628 #define CTL_SOSTENUTO		0x42
629 #define CTL_SOFT_PEDAL		0x43
630 /*	undefined		0x44 */
631 #define CTL_HOLD2		0x45
632 /*	undefined		0x46 - 0x4f */
633 
634 #define CTL_GENERAL_PURPOSE5	0x50
635 #define CTL_GENERAL_PURPOSE6	0x51
636 #define CTL_GENERAL_PURPOSE7	0x52
637 #define CTL_GENERAL_PURPOSE8	0x53
638 /*	undefined		0x54 - 0x5a */
639 #define CTL_EXT_EFF_DEPTH	0x5b
640 #define CTL_TREMOLO_DEPTH	0x5c
641 #define CTL_CHORUS_DEPTH	0x5d
642 #define CTL_DETUNE_DEPTH	0x5e
643 #define CTL_CELESTE_DEPTH	CTL_DETUNE_DEPTH /* Alias for the above one */
644 #define CTL_PHASER_DEPTH	0x5f
645 #define CTL_DATA_INCREMENT	0x60
646 #define CTL_DATA_DECREMENT	0x61
647 #define CTL_NONREG_PARM_NUM_LSB	0x62
648 #define CTL_NONREG_PARM_NUM_MSB	0x63
649 #define CTL_REGIST_PARM_NUM_LSB	0x64
650 #define CTL_REGIST_PARM_NUM_MSB	0x65
651 /*	undefined		0x66 - 0x78 */
652 /*	reserved		0x79 - 0x7f */
653 
654 /* Pseudo controllers (not midi compatible) */
655 #define CTRL_PITCH_BENDER	255
656 #define CTRL_PITCH_BENDER_RANGE	254
657 #define CTRL_EXPRESSION		253	/* Obsolete */
658 #define CTRL_MAIN_VOLUME	252	/* Obsolete */
659 
660 #define SEQ_BALANCE		11
661 #define SEQ_VOLMODE             12
662 
663 /*
664  * Volume mode decides how volumes are used
665  */
666 
667 #define VOL_METHOD_ADAGIO	1
668 #define VOL_METHOD_LINEAR	2
669 
670 /*
671  * Note! SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO are used also as
672  *	 input events.
673  */
674 
675 /*
676  * Event codes 0xf0 to 0xfc are reserved for future extensions.
677  */
678 
679 #define SEQ_FULLSIZE		0xfd	/* Long events */
680 /*
681  * SEQ_FULLSIZE events are used for loading patches/samples to the
682  * synthesizer devices. These events are passed directly to the driver
683  * of the associated synthesizer device. There is no limit to the size
684  * of the extended events. These events are not queued but executed
685  * immediately when the write() is called (execution can take several
686  * seconds of time).
687  *
688  * When a SEQ_FULLSIZE message is written to the device, it must
689  * be written using exactly one write() call. Other events cannot
690  * be mixed to the same write.
691  *
692  * For FM synths (YM3812/OPL3) use struct sbi_instrument and write
693  * it to the /dev/sequencer. Don't write other data together with
694  * the instrument structure Set the key field of the structure to
695  * FM_PATCH. The device field is used to route the patch to the
696  * corresponding device.
697  *
698  * For Gravis UltraSound use struct patch_info. Initialize the key field
699  * to GUS_PATCH.
700  */
701 #define SEQ_PRIVATE	0xfe	/* Low level HW dependent events (8 bytes) */
702 #define SEQ_EXTENDED	0xff	/* Extended events (8 bytes) OBSOLETE */
703 
704 /*
705  * Record for FM patches
706  */
707 
708 typedef u_char sbi_instr_data[32];
709 
710 struct sbi_instrument {
711 	u_short	key;	/* FM_PATCH or OPL3_PATCH */
712 #define FM_PATCH	_PATCHKEY(0x01)
713 #define OPL3_PATCH	_PATCHKEY(0x03)
714 	short		device;		/* Synth# (0-4)	*/
715 	int 		channel;	/* Program# to be initialized  */
716 	sbi_instr_data	operators;	/* Reg. settings for operator cells
717 					 * (.SBI format)	*/
718 };
719 
720 struct synth_info {	/* Read only */
721 	char	name[30];
722 	int	device;		/* 0-N. INITIALIZE BEFORE CALLING */
723 	int	synth_type;
724 #define SYNTH_TYPE_FM			0
725 #define SYNTH_TYPE_SAMPLE		1
726 #define SYNTH_TYPE_MIDI			2	/* Midi interface */
727 
728 	int	synth_subtype;
729 #define FM_TYPE_ADLIB			0x00
730 #define FM_TYPE_OPL3			0x01
731 #define MIDI_TYPE_MPU401		0x401
732 
733 #define SAMPLE_TYPE_BASIC		0x10
734 #define SAMPLE_TYPE_GUS			SAMPLE_TYPE_BASIC
735 #define SAMPLE_TYPE_AWE32		0x20
736 
737 	int	perc_mode;	/* No longer supported */
738 	int	nr_voices;
739 	int	nr_drums;	/* Obsolete field */
740 	int	instr_bank_size;
741 	u_long	capabilities;
742 #define SYNTH_CAP_PERCMODE	0x00000001 /* No longer used */
743 #define SYNTH_CAP_OPL3		0x00000002 /* Set if OPL3 supported */
744 #define SYNTH_CAP_INPUT		0x00000004 /* Input (MIDI) device */
745 	int	dummies[19];	/* Reserve space */
746 };
747 
748 struct sound_timer_info {
749 	char name[32];
750 	int caps;
751 };
752 
753 struct midi_info {
754 	char		name[30];
755 	int		device;		/* 0-N. INITIALIZE BEFORE CALLING */
756 	u_long	capabilities;	/* To be defined later */
757 	int		dev_type;
758 	int		dummies[18];	/* Reserve space */
759 };
760 
761 /*
762  * ioctl commands for the /dev/midi##
763  */
764 typedef struct {
765 	u_char cmd;
766 	char nr_args, nr_returns;
767 	u_char data[30];
768 } mpu_command_rec;
769 
770 #define SNDCTL_MIDI_PRETIME	_IOWR('m', 0, int)
771 #define SNDCTL_MIDI_MPUMODE	_IOWR('m', 1, int)
772 #define SNDCTL_MIDI_MPUCMD	_IOWR('m', 2, mpu_command_rec)
773 #define MIOSPASSTHRU		_IOWR('m', 3, int)
774 #define MIOGPASSTHRU		_IOWR('m', 4, int)
775 
776 /*
777  * IOCTL commands for /dev/dsp and /dev/audio
778  */
779 
780 #define SNDCTL_DSP_HALT		_IO  ('P', 0)
781 #define SNDCTL_DSP_RESET	SNDCTL_DSP_HALT
782 #define SNDCTL_DSP_SYNC		_IO  ('P', 1)
783 #define SNDCTL_DSP_SPEED	_IOWR('P', 2, int)
784 #define SNDCTL_DSP_STEREO	_IOWR('P', 3, int)
785 #define SNDCTL_DSP_GETBLKSIZE	_IOR('P', 4, int)
786 #define SNDCTL_DSP_SETBLKSIZE   _IOW('P', 4, int)
787 #define SNDCTL_DSP_SETFMT	_IOWR('P',5, int) /* Selects ONE fmt*/
788 
789 /*
790  * SOUND_PCM_WRITE_CHANNELS is not that different
791  * from SNDCTL_DSP_STEREO
792  */
793 #define SOUND_PCM_WRITE_CHANNELS	_IOWR('P', 6, int)
794 #define SNDCTL_DSP_CHANNELS	SOUND_PCM_WRITE_CHANNELS
795 #define SOUND_PCM_WRITE_FILTER	_IOWR('P', 7, int)
796 #define SNDCTL_DSP_POST		_IO  ('P', 8)
797 
798 /*
799  * SNDCTL_DSP_SETBLKSIZE and the following two calls mostly do
800  * the same thing, i.e. set the block size used in DMA transfers.
801  */
802 #define SNDCTL_DSP_SUBDIVIDE	_IOWR('P', 9, int)
803 #define SNDCTL_DSP_SETFRAGMENT	_IOWR('P',10, int)
804 
805 
806 #define SNDCTL_DSP_GETFMTS	_IOR ('P',11, int) /* Returns a mask */
807 /*
808  * Buffer status queries.
809  */
810 typedef struct audio_buf_info {
811     int fragments;	/* # of avail. frags (partly used ones not counted) */
812     int fragstotal;	/* Total # of fragments allocated */
813     int fragsize;	/* Size of a fragment in bytes */
814 
815     int bytes;	/* Avail. space in bytes (includes partly used fragments) */
816 		/* Note! 'bytes' could be more than fragments*fragsize */
817 } audio_buf_info;
818 
819 #define SNDCTL_DSP_GETOSPACE	_IOR ('P',12, audio_buf_info)
820 #define SNDCTL_DSP_GETISPACE	_IOR ('P',13, audio_buf_info)
821 
822 /*
823  * SNDCTL_DSP_NONBLOCK is the same (but less powerful, since the
824  * action cannot be undone) of FIONBIO. The same can be achieved
825  * by opening the device with O_NDELAY
826  */
827 #define SNDCTL_DSP_NONBLOCK	_IO  ('P',14)
828 
829 #define SNDCTL_DSP_GETCAPS	_IOR ('P',15, int)
830 #	define PCM_CAP_REVISION		0x000000ff	/* Bits for revision level (0 to 255) */
831 #	define PCM_CAP_DUPLEX		0x00000100	/* Full duplex record/playback */
832 #	define PCM_CAP_REALTIME		0x00000200	/* Not in use */
833 #	define PCM_CAP_BATCH		0x00000400	/* Device has some kind of */
834 							/* internal buffers which may */
835 							/* cause some delays and */
836 							/* decrease precision of timing */
837 #	define PCM_CAP_COPROC		0x00000800	/* Has a coprocessor */
838 							/* Sometimes it's a DSP */
839 							/* but usually not */
840 #	define PCM_CAP_TRIGGER		0x00001000	/* Supports SETTRIGGER */
841 #	define PCM_CAP_MMAP		0x00002000	/* Supports mmap() */
842 #	define PCM_CAP_MULTI		0x00004000	/* Supports multiple open */
843 #	define PCM_CAP_BIND		0x00008000	/* Supports binding to front/rear/center/lfe */
844 #   	define PCM_CAP_INPUT		0x00010000	/* Supports recording */
845 #   	define PCM_CAP_OUTPUT		0x00020000	/* Supports playback */
846 #	define PCM_CAP_VIRTUAL		0x00040000	/* Virtual device */
847 /* 0x00040000 and 0x00080000 reserved for future use */
848 
849 /* Analog/digital control capabilities */
850 #	define PCM_CAP_ANALOGOUT	0x00100000
851 #	define PCM_CAP_ANALOGIN		0x00200000
852 #	define PCM_CAP_DIGITALOUT	0x00400000
853 #	define PCM_CAP_DIGITALIN	0x00800000
854 #	define PCM_CAP_ADMASK		0x00f00000
855 /*
856  * NOTE! (capabilities & PCM_CAP_ADMASK)==0 means just that the
857  * digital/analog interface control features are not supported by the
858  * device/driver. However the device still supports analog, digital or
859  * both inputs/outputs (depending on the device). See the OSS Programmer's
860  * Guide for full details.
861  */
862 #	define PCM_CAP_SPECIAL		0x01000000	/* Not for ordinary "multimedia" use */
863 #	define PCM_CAP_SHADOW		0x00000000	/* OBSOLETE */
864 
865 /*
866  * Preferred channel usage. These bits can be used to
867  * give recommendations to the application. Used by few drivers.
868  * For example if ((caps & DSP_CH_MASK) == DSP_CH_MONO) means that
869  * the device works best in mono mode. However it doesn't necessarily mean
870  * that the device cannot be used in stereo. These bits should only be used
871  * by special applications such as multi track hard disk recorders to find
872  * out the initial setup. However the user should be able to override this
873  * selection.
874  *
875  * To find out which modes are actually supported the application should
876  * try to select them using SNDCTL_DSP_CHANNELS.
877  */
878 #	define DSP_CH_MASK		0x06000000	/* Mask */
879 #	define DSP_CH_ANY		0x00000000	/* No preferred mode */
880 #	define DSP_CH_MONO		0x02000000
881 #	define DSP_CH_STEREO		0x04000000
882 #	define DSP_CH_MULTI		0x06000000	/* More than two channels */
883 
884 #	define PCM_CAP_HIDDEN		0x08000000	/* Hidden device */
885 #	define PCM_CAP_FREERATE		0x10000000
886 #	define PCM_CAP_MODEM		0x20000000	/* Modem device */
887 #	define PCM_CAP_DEFAULT		0x40000000	/* "Default" device */
888 
889 /*
890  * The PCM_CAP_* capability names were known as DSP_CAP_* prior OSS 4.0
891  * so it's necessary to define the older names too.
892  */
893 #define DSP_CAP_ADMASK		PCM_CAP_ADMASK
894 #define DSP_CAP_ANALOGIN	PCM_CAP_ANALOGIN
895 #define DSP_CAP_ANALOGOUT	PCM_CAP_ANALOGOUT
896 #define DSP_CAP_BATCH		PCM_CAP_BATCH
897 #define DSP_CAP_BIND		PCM_CAP_BIND
898 #define DSP_CAP_COPROC		PCM_CAP_COPROC
899 #define DSP_CAP_DEFAULT		PCM_CAP_DEFAULT
900 #define DSP_CAP_DIGITALIN	PCM_CAP_DIGITALIN
901 #define DSP_CAP_DIGITALOUT	PCM_CAP_DIGITALOUT
902 #define DSP_CAP_DUPLEX		PCM_CAP_DUPLEX
903 #define DSP_CAP_FREERATE	PCM_CAP_FREERATE
904 #define DSP_CAP_HIDDEN		PCM_CAP_HIDDEN
905 #define DSP_CAP_INPUT		PCM_CAP_INPUT
906 #define DSP_CAP_MMAP		PCM_CAP_MMAP
907 #define DSP_CAP_MODEM		PCM_CAP_MODEM
908 #define DSP_CAP_MULTI		PCM_CAP_MULTI
909 #define DSP_CAP_OUTPUT		PCM_CAP_OUTPUT
910 #define DSP_CAP_REALTIME	PCM_CAP_REALTIME
911 #define DSP_CAP_REVISION	PCM_CAP_REVISION
912 #define DSP_CAP_SHADOW		PCM_CAP_SHADOW
913 #define DSP_CAP_TRIGGER		PCM_CAP_TRIGGER
914 #define DSP_CAP_VIRTUAL		PCM_CAP_VIRTUAL
915 
916 /*
917  * What do these function do ?
918  */
919 #define SNDCTL_DSP_GETTRIGGER	_IOR ('P',16, int)
920 #define SNDCTL_DSP_SETTRIGGER	_IOW ('P',16, int)
921 #define PCM_ENABLE_INPUT	0x00000001
922 #define PCM_ENABLE_OUTPUT	0x00000002
923 
924 typedef struct count_info {
925 	int bytes;	/* Total # of bytes processed */
926 	int blocks;	/* # of fragment transitions since last time */
927 	int ptr;	/* Current DMA pointer value */
928 } count_info;
929 
930 /*
931  * GETIPTR and GETISPACE are not that different... same for out.
932  */
933 #define SNDCTL_DSP_GETIPTR	_IOR ('P',17, count_info)
934 #define SNDCTL_DSP_GETOPTR	_IOR ('P',18, count_info)
935 
936 typedef struct buffmem_desc {
937 	caddr_t buffer;
938 	int size;
939 } buffmem_desc;
940 
941 #define SNDCTL_DSP_MAPINBUF	_IOR ('P', 19, buffmem_desc)
942 #define SNDCTL_DSP_MAPOUTBUF	_IOR ('P', 20, buffmem_desc)
943 #define SNDCTL_DSP_SETSYNCRO	_IO  ('P', 21)
944 #define SNDCTL_DSP_SETDUPLEX	_IO  ('P', 22)
945 #define SNDCTL_DSP_GETODELAY	_IOR ('P', 23, int)
946 
947 /*
948  * I guess these are the readonly version of the same
949  * functions that exist above as SNDCTL_DSP_...
950  */
951 #define SOUND_PCM_READ_RATE	_IOR ('P', 2, int)
952 #define SOUND_PCM_READ_CHANNELS	_IOR ('P', 6, int)
953 #define SOUND_PCM_READ_BITS	_IOR ('P', 5, int)
954 #define SOUND_PCM_READ_FILTER	_IOR ('P', 7, int)
955 
956 /*
957  * ioctl calls to be used in communication with coprocessors and
958  * DSP chips.
959  */
960 
961 typedef struct copr_buffer {
962 	int command;	/* Set to 0 if not used */
963 	int flags;
964 #define CPF_NONE		0x0000
965 #define CPF_FIRST		0x0001	/* First block */
966 #define CPF_LAST		0x0002	/* Last block */
967 	int len;
968 	int offs;	/* If required by the device (0 if not used) */
969 
970 	u_char data[4000]; /* NOTE! 4000 is not 4k */
971 } copr_buffer;
972 
973 typedef struct copr_debug_buf {
974 	int command;	/* Used internally. Set to 0 */
975 	int parm1;
976 	int parm2;
977 	int flags;
978 	int len;	/* Length of data in bytes */
979 } copr_debug_buf;
980 
981 typedef struct copr_msg {
982 	int len;
983 	u_char data[4000];
984 } copr_msg;
985 
986 #define SNDCTL_COPR_RESET       _IO  ('C',  0)
987 #define SNDCTL_COPR_LOAD	_IOWR('C',  1, copr_buffer)
988 #define SNDCTL_COPR_RDATA	_IOWR('C',  2, copr_debug_buf)
989 #define SNDCTL_COPR_RCODE	_IOWR('C',  3, copr_debug_buf)
990 #define SNDCTL_COPR_WDATA	_IOW ('C',  4, copr_debug_buf)
991 #define SNDCTL_COPR_WCODE	_IOW ('C',  5, copr_debug_buf)
992 #define SNDCTL_COPR_RUN		_IOWR('C',  6, copr_debug_buf)
993 #define SNDCTL_COPR_HALT	_IOWR('C',  7, copr_debug_buf)
994 #define SNDCTL_COPR_SENDMSG	_IOW ('C',  8, copr_msg)
995 #define SNDCTL_COPR_RCVMSG	_IOR ('C',  9, copr_msg)
996 
997 /*
998  * IOCTL commands for /dev/mixer
999  */
1000 
1001 /*
1002  * Mixer devices
1003  *
1004  * There can be up to 20 different analog mixer channels. The
1005  * SOUND_MIXER_NRDEVICES gives the currently supported maximum.
1006  * The SOUND_MIXER_READ_DEVMASK returns a bitmask which tells
1007  * the devices supported by the particular mixer.
1008  */
1009 
1010 #define SOUND_MIXER_NRDEVICES	25
1011 #define SOUND_MIXER_VOLUME	0	/* Master output level */
1012 #define SOUND_MIXER_BASS	1	/* Treble level of all output channels */
1013 #define SOUND_MIXER_TREBLE	2	/* Bass level of all output channels */
1014 #define SOUND_MIXER_SYNTH	3	/* Volume of synthesier input */
1015 #define SOUND_MIXER_PCM		4	/* Output level for the audio device */
1016 #define SOUND_MIXER_SPEAKER	5	/* Output level for the PC speaker
1017 					 * signals */
1018 #define SOUND_MIXER_LINE	6	/* Volume level for the line in jack */
1019 #define SOUND_MIXER_MIC		7	/* Volume for the signal coming from
1020 					 * the microphone jack */
1021 #define SOUND_MIXER_CD		8	/* Volume level for the input signal
1022 					 * connected to the CD audio input */
1023 #define SOUND_MIXER_IMIX	9	/* Recording monitor. It controls the
1024 					 * output volume of the selected
1025 					 * recording sources while recording */
1026 #define SOUND_MIXER_ALTPCM	10	/* Volume of the alternative codec
1027 					 * device */
1028 #define SOUND_MIXER_RECLEV	11	/* Global recording level */
1029 #define SOUND_MIXER_IGAIN	12	/* Input gain */
1030 #define SOUND_MIXER_OGAIN	13	/* Output gain */
1031 /*
1032  * The AD1848 codec and compatibles have three line level inputs
1033  * (line, aux1 and aux2). Since each card manufacturer have assigned
1034  * different meanings to these inputs, it's inpractical to assign
1035  * specific meanings (line, cd, synth etc.) to them.
1036  */
1037 #define SOUND_MIXER_LINE1	14	/* Input source 1  (aux1) */
1038 #define SOUND_MIXER_LINE2	15	/* Input source 2  (aux2) */
1039 #define SOUND_MIXER_LINE3	16	/* Input source 3  (line) */
1040 #define SOUND_MIXER_DIGITAL1    17      /* Digital (input) 1 */
1041 #define SOUND_MIXER_DIGITAL2    18      /* Digital (input) 2 */
1042 #define SOUND_MIXER_DIGITAL3    19      /* Digital (input) 3 */
1043 #define SOUND_MIXER_PHONEIN     20      /* Phone input */
1044 #define SOUND_MIXER_PHONEOUT    21      /* Phone output */
1045 #define SOUND_MIXER_VIDEO       22      /* Video/TV (audio) in */
1046 #define SOUND_MIXER_RADIO       23      /* Radio in */
1047 #define SOUND_MIXER_MONITOR     24      /* Monitor (usually mic) volume */
1048 
1049 
1050 /*
1051  * Some on/off settings (SOUND_SPECIAL_MIN - SOUND_SPECIAL_MAX)
1052  * Not counted to SOUND_MIXER_NRDEVICES, but use the same number space
1053  */
1054 #define SOUND_ONOFF_MIN		28
1055 #define SOUND_ONOFF_MAX		30
1056 #define SOUND_MIXER_MUTE	28	/* 0 or 1 */
1057 #define SOUND_MIXER_ENHANCE	29	/* Enhanced stereo (0, 40, 60 or 80) */
1058 #define SOUND_MIXER_LOUD	30	/* 0 or 1 */
1059 
1060 /* Note!	Number 31 cannot be used since the sign bit is reserved */
1061 #define SOUND_MIXER_NONE        31
1062 
1063 #define SOUND_DEVICE_LABELS	{ \
1064 	"Vol  ", "Bass ", "Trebl", "Synth", "Pcm  ", "Spkr ", "Line ", \
1065 	"Mic  ", "CD   ", "Mix  ", "Pcm2 ", "Rec  ", "IGain", "OGain", \
1066 	"Line1", "Line2", "Line3", "Digital1", "Digital2", "Digital3", \
1067 	"PhoneIn", "PhoneOut", "Video", "Radio", "Monitor"}
1068 
1069 #define SOUND_DEVICE_NAMES	{ \
1070 	"vol", "bass", "treble", "synth", "pcm", "speaker", "line", \
1071 	"mic", "cd", "mix", "pcm2", "rec", "igain", "ogain", \
1072 	"line1", "line2", "line3", "dig1", "dig2", "dig3", \
1073 	"phin", "phout", "video", "radio", "monitor"}
1074 
1075 /*	Device bitmask identifiers	*/
1076 
1077 #define SOUND_MIXER_RECSRC	0xff	/* 1 bit per recording source */
1078 #define SOUND_MIXER_DEVMASK	0xfe	/* 1 bit per supported device */
1079 #define SOUND_MIXER_RECMASK	0xfd	/* 1 bit per supp. recording source */
1080 #define SOUND_MIXER_CAPS	0xfc
1081 #define SOUND_CAP_EXCL_INPUT	0x00000001	/* Only 1 rec. src at a time */
1082 #define SOUND_MIXER_STEREODEVS	0xfb	/* Mixer channels supporting stereo */
1083 
1084 /*	Device mask bits	*/
1085 
1086 #define SOUND_MASK_VOLUME	(1 << SOUND_MIXER_VOLUME)
1087 #define SOUND_MASK_BASS		(1 << SOUND_MIXER_BASS)
1088 #define SOUND_MASK_TREBLE	(1 << SOUND_MIXER_TREBLE)
1089 #define SOUND_MASK_SYNTH	(1 << SOUND_MIXER_SYNTH)
1090 #define SOUND_MASK_PCM		(1 << SOUND_MIXER_PCM)
1091 #define SOUND_MASK_SPEAKER	(1 << SOUND_MIXER_SPEAKER)
1092 #define SOUND_MASK_LINE		(1 << SOUND_MIXER_LINE)
1093 #define SOUND_MASK_MIC		(1 << SOUND_MIXER_MIC)
1094 #define SOUND_MASK_CD		(1 << SOUND_MIXER_CD)
1095 #define SOUND_MASK_IMIX		(1 << SOUND_MIXER_IMIX)
1096 #define SOUND_MASK_ALTPCM	(1 << SOUND_MIXER_ALTPCM)
1097 #define SOUND_MASK_RECLEV	(1 << SOUND_MIXER_RECLEV)
1098 #define SOUND_MASK_IGAIN	(1 << SOUND_MIXER_IGAIN)
1099 #define SOUND_MASK_OGAIN	(1 << SOUND_MIXER_OGAIN)
1100 #define SOUND_MASK_LINE1	(1 << SOUND_MIXER_LINE1)
1101 #define SOUND_MASK_LINE2	(1 << SOUND_MIXER_LINE2)
1102 #define SOUND_MASK_LINE3	(1 << SOUND_MIXER_LINE3)
1103 #define SOUND_MASK_DIGITAL1     (1 << SOUND_MIXER_DIGITAL1)
1104 #define SOUND_MASK_DIGITAL2     (1 << SOUND_MIXER_DIGITAL2)
1105 #define SOUND_MASK_DIGITAL3     (1 << SOUND_MIXER_DIGITAL3)
1106 #define SOUND_MASK_PHONEIN      (1 << SOUND_MIXER_PHONEIN)
1107 #define SOUND_MASK_PHONEOUT     (1 << SOUND_MIXER_PHONEOUT)
1108 #define SOUND_MASK_RADIO        (1 << SOUND_MIXER_RADIO)
1109 #define SOUND_MASK_VIDEO        (1 << SOUND_MIXER_VIDEO)
1110 #define SOUND_MASK_MONITOR      (1 << SOUND_MIXER_MONITOR)
1111 
1112 /* Obsolete macros */
1113 #define SOUND_MASK_MUTE		(1 << SOUND_MIXER_MUTE)
1114 #define SOUND_MASK_ENHANCE	(1 << SOUND_MIXER_ENHANCE)
1115 #define SOUND_MASK_LOUD		(1 << SOUND_MIXER_LOUD)
1116 
1117 #define MIXER_READ(dev)		_IOR('M', dev, int)
1118 #define SOUND_MIXER_READ_VOLUME		MIXER_READ(SOUND_MIXER_VOLUME)
1119 #define SOUND_MIXER_READ_BASS		MIXER_READ(SOUND_MIXER_BASS)
1120 #define SOUND_MIXER_READ_TREBLE		MIXER_READ(SOUND_MIXER_TREBLE)
1121 #define SOUND_MIXER_READ_SYNTH		MIXER_READ(SOUND_MIXER_SYNTH)
1122 #define SOUND_MIXER_READ_PCM		MIXER_READ(SOUND_MIXER_PCM)
1123 #define SOUND_MIXER_READ_SPEAKER	MIXER_READ(SOUND_MIXER_SPEAKER)
1124 #define SOUND_MIXER_READ_LINE		MIXER_READ(SOUND_MIXER_LINE)
1125 #define SOUND_MIXER_READ_MIC		MIXER_READ(SOUND_MIXER_MIC)
1126 #define SOUND_MIXER_READ_CD		MIXER_READ(SOUND_MIXER_CD)
1127 #define SOUND_MIXER_READ_IMIX		MIXER_READ(SOUND_MIXER_IMIX)
1128 #define SOUND_MIXER_READ_ALTPCM		MIXER_READ(SOUND_MIXER_ALTPCM)
1129 #define SOUND_MIXER_READ_RECLEV		MIXER_READ(SOUND_MIXER_RECLEV)
1130 #define SOUND_MIXER_READ_IGAIN		MIXER_READ(SOUND_MIXER_IGAIN)
1131 #define SOUND_MIXER_READ_OGAIN		MIXER_READ(SOUND_MIXER_OGAIN)
1132 #define SOUND_MIXER_READ_LINE1		MIXER_READ(SOUND_MIXER_LINE1)
1133 #define SOUND_MIXER_READ_LINE2		MIXER_READ(SOUND_MIXER_LINE2)
1134 #define SOUND_MIXER_READ_LINE3		MIXER_READ(SOUND_MIXER_LINE3)
1135 #define SOUND_MIXER_READ_DIGITAL1	MIXER_READ(SOUND_MIXER_DIGITAL1)
1136 #define SOUND_MIXER_READ_DIGITAL2	MIXER_READ(SOUND_MIXER_DIGITAL2)
1137 #define SOUND_MIXER_READ_DIGITAL3	MIXER_READ(SOUND_MIXER_DIGITAL3)
1138 #define SOUND_MIXER_READ_PHONEIN      	MIXER_READ(SOUND_MIXER_PHONEIN)
1139 #define SOUND_MIXER_READ_PHONEOUT	MIXER_READ(SOUND_MIXER_PHONEOUT)
1140 #define SOUND_MIXER_READ_RADIO		MIXER_READ(SOUND_MIXER_RADIO)
1141 #define SOUND_MIXER_READ_VIDEO		MIXER_READ(SOUND_MIXER_VIDEO)
1142 #define SOUND_MIXER_READ_MONITOR	MIXER_READ(SOUND_MIXER_MONITOR)
1143 
1144 /* Obsolete macros */
1145 #define SOUND_MIXER_READ_MUTE		MIXER_READ(SOUND_MIXER_MUTE)
1146 #define SOUND_MIXER_READ_ENHANCE	MIXER_READ(SOUND_MIXER_ENHANCE)
1147 #define SOUND_MIXER_READ_LOUD		MIXER_READ(SOUND_MIXER_LOUD)
1148 
1149 #define SOUND_MIXER_READ_RECSRC		MIXER_READ(SOUND_MIXER_RECSRC)
1150 #define SOUND_MIXER_READ_DEVMASK	MIXER_READ(SOUND_MIXER_DEVMASK)
1151 #define SOUND_MIXER_READ_RECMASK	MIXER_READ(SOUND_MIXER_RECMASK)
1152 #define SOUND_MIXER_READ_STEREODEVS	MIXER_READ(SOUND_MIXER_STEREODEVS)
1153 #define SOUND_MIXER_READ_CAPS		MIXER_READ(SOUND_MIXER_CAPS)
1154 
1155 #define MIXER_WRITE(dev)		_IOWR('M', dev, int)
1156 #define SOUND_MIXER_WRITE_VOLUME	MIXER_WRITE(SOUND_MIXER_VOLUME)
1157 #define SOUND_MIXER_WRITE_BASS		MIXER_WRITE(SOUND_MIXER_BASS)
1158 #define SOUND_MIXER_WRITE_TREBLE	MIXER_WRITE(SOUND_MIXER_TREBLE)
1159 #define SOUND_MIXER_WRITE_SYNTH		MIXER_WRITE(SOUND_MIXER_SYNTH)
1160 #define SOUND_MIXER_WRITE_PCM		MIXER_WRITE(SOUND_MIXER_PCM)
1161 #define SOUND_MIXER_WRITE_SPEAKER	MIXER_WRITE(SOUND_MIXER_SPEAKER)
1162 #define SOUND_MIXER_WRITE_LINE		MIXER_WRITE(SOUND_MIXER_LINE)
1163 #define SOUND_MIXER_WRITE_MIC		MIXER_WRITE(SOUND_MIXER_MIC)
1164 #define SOUND_MIXER_WRITE_CD		MIXER_WRITE(SOUND_MIXER_CD)
1165 #define SOUND_MIXER_WRITE_IMIX		MIXER_WRITE(SOUND_MIXER_IMIX)
1166 #define SOUND_MIXER_WRITE_ALTPCM	MIXER_WRITE(SOUND_MIXER_ALTPCM)
1167 #define SOUND_MIXER_WRITE_RECLEV	MIXER_WRITE(SOUND_MIXER_RECLEV)
1168 #define SOUND_MIXER_WRITE_IGAIN		MIXER_WRITE(SOUND_MIXER_IGAIN)
1169 #define SOUND_MIXER_WRITE_OGAIN		MIXER_WRITE(SOUND_MIXER_OGAIN)
1170 #define SOUND_MIXER_WRITE_LINE1		MIXER_WRITE(SOUND_MIXER_LINE1)
1171 #define SOUND_MIXER_WRITE_LINE2		MIXER_WRITE(SOUND_MIXER_LINE2)
1172 #define SOUND_MIXER_WRITE_LINE3		MIXER_WRITE(SOUND_MIXER_LINE3)
1173 #define SOUND_MIXER_WRITE_DIGITAL1	MIXER_WRITE(SOUND_MIXER_DIGITAL1)
1174 #define SOUND_MIXER_WRITE_DIGITAL2	MIXER_WRITE(SOUND_MIXER_DIGITAL2)
1175 #define SOUND_MIXER_WRITE_DIGITAL3	MIXER_WRITE(SOUND_MIXER_DIGITAL3)
1176 #define SOUND_MIXER_WRITE_PHONEIN      	MIXER_WRITE(SOUND_MIXER_PHONEIN)
1177 #define SOUND_MIXER_WRITE_PHONEOUT	MIXER_WRITE(SOUND_MIXER_PHONEOUT)
1178 #define SOUND_MIXER_WRITE_RADIO		MIXER_WRITE(SOUND_MIXER_RADIO)
1179 #define SOUND_MIXER_WRITE_VIDEO		MIXER_WRITE(SOUND_MIXER_VIDEO)
1180 #define SOUND_MIXER_WRITE_MONITOR	MIXER_WRITE(SOUND_MIXER_MONITOR)
1181 
1182 #define SOUND_MIXER_WRITE_MUTE		MIXER_WRITE(SOUND_MIXER_MUTE)
1183 #define SOUND_MIXER_WRITE_ENHANCE	MIXER_WRITE(SOUND_MIXER_ENHANCE)
1184 #define SOUND_MIXER_WRITE_LOUD		MIXER_WRITE(SOUND_MIXER_LOUD)
1185 
1186 #define SOUND_MIXER_WRITE_RECSRC	MIXER_WRITE(SOUND_MIXER_RECSRC)
1187 
1188 typedef struct mixer_info {
1189   char id[16];
1190   char name[32];
1191   int  modify_counter;
1192   int fillers[10];
1193 } mixer_info;
1194 
1195 #define SOUND_MIXER_INFO		_IOR('M', 101, mixer_info)
1196 
1197 #define LEFT_CHN	0
1198 #define RIGHT_CHN	1
1199 
1200 /*
1201  * Level 2 event types for /dev/sequencer
1202  */
1203 
1204 /*
1205  * The 4 most significant bits of byte 0 specify the class of
1206  * the event:
1207  *
1208  *	0x8X = system level events,
1209  *	0x9X = device/port specific events, event[1] = device/port,
1210  *		The last 4 bits give the subtype:
1211  *			0x02	= Channel event (event[3] = chn).
1212  *			0x01	= note event (event[4] = note).
1213  *			(0x01 is not used alone but always with bit 0x02).
1214  *	       event[2] = MIDI message code (0x80=note off etc.)
1215  *
1216  */
1217 
1218 #define EV_SEQ_LOCAL		0x80
1219 #define EV_TIMING		0x81
1220 #define EV_CHN_COMMON		0x92
1221 #define EV_CHN_VOICE		0x93
1222 #define EV_SYSEX		0x94
1223 /*
1224  * Event types 200 to 220 are reserved for application use.
1225  * These numbers will not be used by the driver.
1226  */
1227 
1228 /*
1229  * Events for event type EV_CHN_VOICE
1230  */
1231 
1232 #define MIDI_NOTEOFF		0x80
1233 #define MIDI_NOTEON		0x90
1234 #define MIDI_KEY_PRESSURE	0xA0
1235 
1236 /*
1237  * Events for event type EV_CHN_COMMON
1238  */
1239 
1240 #define MIDI_CTL_CHANGE		0xB0
1241 #define MIDI_PGM_CHANGE		0xC0
1242 #define MIDI_CHN_PRESSURE	0xD0
1243 #define MIDI_PITCH_BEND		0xE0
1244 
1245 #define MIDI_SYSTEM_PREFIX	0xF0
1246 
1247 /*
1248  * Timer event types
1249  */
1250 #define TMR_WAIT_REL		1	/* Time relative to the prev time */
1251 #define TMR_WAIT_ABS		2	/* Absolute time since TMR_START */
1252 #define TMR_STOP		3
1253 #define TMR_START		4
1254 #define TMR_CONTINUE		5
1255 #define TMR_TEMPO		6
1256 #define TMR_ECHO		8
1257 #define TMR_CLOCK		9	/* MIDI clock */
1258 #define TMR_SPP			10	/* Song position pointer */
1259 #define TMR_TIMESIG		11	/* Time signature */
1260 
1261 /*
1262  *	Local event types
1263  */
1264 #define LOCL_STARTAUDIO		1
1265 
1266 #if !defined(_KERNEL) || defined(USE_SEQ_MACROS)
1267 /*
1268  *	Some convenience macros to simplify programming of the
1269  *	/dev/sequencer interface
1270  *
1271  *	These macros define the API which should be used when possible.
1272  */
1273 
1274 #ifndef USE_SIMPLE_MACROS
1275 void seqbuf_dump(void);	/* This function must be provided by programs */
1276 
1277 /* Sample seqbuf_dump() implementation:
1278  *
1279  *	SEQ_DEFINEBUF (2048);	-- Defines a buffer for 2048 bytes
1280  *
1281  *	int seqfd;		-- The file descriptor for /dev/sequencer.
1282  *
1283  *	void
1284  *	seqbuf_dump ()
1285  *	{
1286  *	  if (_seqbufptr)
1287  *	    if (write (seqfd, _seqbuf, _seqbufptr) == -1)
1288  *	      {
1289  *		perror ("write /dev/sequencer");
1290  *		exit (-1);
1291  *	      }
1292  *	  _seqbufptr = 0;
1293  *	}
1294  */
1295 
1296 #define SEQ_DEFINEBUF(len)		\
1297 	u_char _seqbuf[len]; int _seqbuflen = len;int _seqbufptr = 0
1298 #define SEQ_USE_EXTBUF()		\
1299 	extern u_char _seqbuf[]; \
1300 	extern int _seqbuflen;extern int _seqbufptr
1301 #define SEQ_DECLAREBUF()		SEQ_USE_EXTBUF()
1302 #define SEQ_PM_DEFINES			struct patmgr_info _pm_info
1303 #define _SEQ_NEEDBUF(len)		\
1304 	if ((_seqbufptr+(len)) > _seqbuflen) \
1305 		seqbuf_dump()
1306 #define _SEQ_ADVBUF(len)		_seqbufptr += len
1307 #define SEQ_DUMPBUF			seqbuf_dump
1308 #else
1309 /*
1310  * This variation of the sequencer macros is used just to format one event
1311  * using fixed buffer.
1312  *
1313  * The program using the macro library must define the following macros before
1314  * using this library.
1315  *
1316  * #define _seqbuf 		 name of the buffer (u_char[])
1317  * #define _SEQ_ADVBUF(len)	 If the applic needs to know the exact
1318  *				 size of the event, this macro can be used.
1319  *				 Otherwise this must be defined as empty.
1320  * #define _seqbufptr		 Define the name of index variable or 0 if
1321  *				 not required.
1322  */
1323 #define _SEQ_NEEDBUF(len)	/* empty */
1324 #endif
1325 
1326 #define PM_LOAD_PATCH(dev, bank, pgm)	\
1327 	(SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
1328 	_pm_info.device=dev, _pm_info.data.data8[0]=pgm, \
1329 	_pm_info.parm1 = bank, _pm_info.parm2 = 1, \
1330 	ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
1331 #define PM_LOAD_PATCHES(dev, bank, pgm) \
1332 	(SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
1333 	_pm_info.device=dev, bcopy( pgm, _pm_info.data.data8,  128), \
1334 	_pm_info.parm1 = bank, _pm_info.parm2 = 128, \
1335 	ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
1336 
1337 #define SEQ_VOLUME_MODE(dev, mode)	{ \
1338 	_SEQ_NEEDBUF(8);\
1339 	_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
1340 	_seqbuf[_seqbufptr+1] = SEQ_VOLMODE;\
1341 	_seqbuf[_seqbufptr+2] = (dev);\
1342 	_seqbuf[_seqbufptr+3] = (mode);\
1343 	_seqbuf[_seqbufptr+4] = 0;\
1344 	_seqbuf[_seqbufptr+5] = 0;\
1345 	_seqbuf[_seqbufptr+6] = 0;\
1346 	_seqbuf[_seqbufptr+7] = 0;\
1347 	_SEQ_ADVBUF(8);}
1348 
1349 /*
1350  * Midi voice messages
1351  */
1352 
1353 #define _CHN_VOICE(dev, event, chn, note, parm)  { \
1354 	_SEQ_NEEDBUF(8);\
1355 	_seqbuf[_seqbufptr] = EV_CHN_VOICE;\
1356 	_seqbuf[_seqbufptr+1] = (dev);\
1357 	_seqbuf[_seqbufptr+2] = (event);\
1358 	_seqbuf[_seqbufptr+3] = (chn);\
1359 	_seqbuf[_seqbufptr+4] = (note);\
1360 	_seqbuf[_seqbufptr+5] = (parm);\
1361 	_seqbuf[_seqbufptr+6] = (0);\
1362 	_seqbuf[_seqbufptr+7] = 0;\
1363 	_SEQ_ADVBUF(8);}
1364 
1365 #define SEQ_START_NOTE(dev, chn, note, vol) \
1366 		_CHN_VOICE(dev, MIDI_NOTEON, chn, note, vol)
1367 
1368 #define SEQ_STOP_NOTE(dev, chn, note, vol) \
1369 		_CHN_VOICE(dev, MIDI_NOTEOFF, chn, note, vol)
1370 
1371 #define SEQ_KEY_PRESSURE(dev, chn, note, pressure) \
1372 		_CHN_VOICE(dev, MIDI_KEY_PRESSURE, chn, note, pressure)
1373 
1374 /*
1375  * Midi channel messages
1376  */
1377 
1378 #define _CHN_COMMON(dev, event, chn, p1, p2, w14) { \
1379 	_SEQ_NEEDBUF(8);\
1380 	_seqbuf[_seqbufptr] = EV_CHN_COMMON;\
1381 	_seqbuf[_seqbufptr+1] = (dev);\
1382 	_seqbuf[_seqbufptr+2] = (event);\
1383 	_seqbuf[_seqbufptr+3] = (chn);\
1384 	_seqbuf[_seqbufptr+4] = (p1);\
1385 	_seqbuf[_seqbufptr+5] = (p2);\
1386 	*(short *)&_seqbuf[_seqbufptr+6] = (w14);\
1387 	_SEQ_ADVBUF(8);}
1388 /*
1389  * SEQ_SYSEX permits sending of sysex messages. (It may look that it permits
1390  * sending any MIDI bytes but it's absolutely not possible. Trying to do
1391  * so _will_ cause problems with MPU401 intelligent mode).
1392  *
1393  * Sysex messages are sent in blocks of 1 to 6 bytes. Longer messages must be
1394  * sent by calling SEQ_SYSEX() several times (there must be no other events
1395  * between them). First sysex fragment must have 0xf0 in the first byte
1396  * and the last byte (buf[len-1] of the last fragment must be 0xf7. No byte
1397  * between these sysex start and end markers cannot be larger than 0x7f. Also
1398  * lengths of each fragments (except the last one) must be 6.
1399  *
1400  * Breaking the above rules may work with some MIDI ports but is likely to
1401  * cause fatal problems with some other devices (such as MPU401).
1402  */
1403 #define SEQ_SYSEX(dev, buf, len) { \
1404 	int i, l=(len); if (l>6)l=6;\
1405 	_SEQ_NEEDBUF(8);\
1406 	_seqbuf[_seqbufptr] = EV_SYSEX;\
1407 	for(i=0;i<l;i++)_seqbuf[_seqbufptr+i+1] = (buf)[i];\
1408 	for(i=l;i<6;i++)_seqbuf[_seqbufptr+i+1] = 0xff;\
1409 	_SEQ_ADVBUF(8);}
1410 
1411 #define SEQ_CHN_PRESSURE(dev, chn, pressure) \
1412 	_CHN_COMMON(dev, MIDI_CHN_PRESSURE, chn, pressure, 0, 0)
1413 
1414 #define SEQ_SET_PATCH(dev, chn, patch) \
1415 	_CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0)
1416 
1417 #define SEQ_CONTROL(dev, chn, controller, value) \
1418 	_CHN_COMMON(dev, MIDI_CTL_CHANGE, chn, controller, 0, value)
1419 
1420 #define SEQ_BENDER(dev, chn, value) \
1421 	_CHN_COMMON(dev, MIDI_PITCH_BEND, chn, 0, 0, value)
1422 
1423 
1424 #define SEQ_V2_X_CONTROL(dev, voice, controller, value)	{ \
1425 	_SEQ_NEEDBUF(8);\
1426 	_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
1427 	_seqbuf[_seqbufptr+1] = SEQ_CONTROLLER;\
1428 	_seqbuf[_seqbufptr+2] = (dev);\
1429 	_seqbuf[_seqbufptr+3] = (voice);\
1430 	_seqbuf[_seqbufptr+4] = (controller);\
1431 	*(short *)&_seqbuf[_seqbufptr+5] = (value);\
1432 	_seqbuf[_seqbufptr+7] = 0;\
1433 	_SEQ_ADVBUF(8);}
1434 
1435 /*
1436  * The following 5 macros are incorrectly implemented and obsolete.
1437  * Use SEQ_BENDER and SEQ_CONTROL (with proper controller) instead.
1438  */
1439 
1440 #define SEQ_PITCHBEND(dev, voice, value) \
1441 	SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER, value)
1442 #define SEQ_BENDER_RANGE(dev, voice, value) \
1443 	SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER_RANGE, value)
1444 #define SEQ_EXPRESSION(dev, voice, value) \
1445 	SEQ_CONTROL(dev, voice, CTL_EXPRESSION, value*128)
1446 #define SEQ_MAIN_VOLUME(dev, voice, value) \
1447 	SEQ_CONTROL(dev, voice, CTL_MAIN_VOLUME, (value*16383)/100)
1448 #define SEQ_PANNING(dev, voice, pos) \
1449 	SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2)
1450 
1451 /*
1452  * Timing and synchronization macros
1453  */
1454 
1455 #define _TIMER_EVENT(ev, parm)		{ \
1456 	_SEQ_NEEDBUF(8);\
1457 	_seqbuf[_seqbufptr+0] = EV_TIMING; \
1458 	_seqbuf[_seqbufptr+1] = (ev); \
1459 	_seqbuf[_seqbufptr+2] = 0;\
1460 	_seqbuf[_seqbufptr+3] = 0;\
1461 	*(u_int *)&_seqbuf[_seqbufptr+4] = (parm); \
1462 	_SEQ_ADVBUF(8); \
1463 	}
1464 
1465 #define SEQ_START_TIMER()		_TIMER_EVENT(TMR_START, 0)
1466 #define SEQ_STOP_TIMER()		_TIMER_EVENT(TMR_STOP, 0)
1467 #define SEQ_CONTINUE_TIMER()		_TIMER_EVENT(TMR_CONTINUE, 0)
1468 #define SEQ_WAIT_TIME(ticks)		_TIMER_EVENT(TMR_WAIT_ABS, ticks)
1469 #define SEQ_DELTA_TIME(ticks)		_TIMER_EVENT(TMR_WAIT_REL, ticks)
1470 #define SEQ_ECHO_BACK(key)		_TIMER_EVENT(TMR_ECHO, key)
1471 #define SEQ_SET_TEMPO(value)		_TIMER_EVENT(TMR_TEMPO, value)
1472 #define SEQ_SONGPOS(pos)		_TIMER_EVENT(TMR_SPP, pos)
1473 #define SEQ_TIME_SIGNATURE(sig)		_TIMER_EVENT(TMR_TIMESIG, sig)
1474 
1475 /*
1476  * Local control events
1477  */
1478 
1479 #define _LOCAL_EVENT(ev, parm)		{ \
1480 	_SEQ_NEEDBUF(8);\
1481 	_seqbuf[_seqbufptr+0] = EV_SEQ_LOCAL; \
1482 	_seqbuf[_seqbufptr+1] = (ev); \
1483 	_seqbuf[_seqbufptr+2] = 0;\
1484 	_seqbuf[_seqbufptr+3] = 0;\
1485 	*(u_int *)&_seqbuf[_seqbufptr+4] = (parm); \
1486 	_SEQ_ADVBUF(8); \
1487 	}
1488 
1489 #define SEQ_PLAYAUDIO(devmask)		_LOCAL_EVENT(LOCL_STARTAUDIO, devmask)
1490 /*
1491  * Events for the level 1 interface only
1492  */
1493 
1494 #define SEQ_MIDIOUT(device, byte)	{ \
1495 	_SEQ_NEEDBUF(4);\
1496 	_seqbuf[_seqbufptr] = SEQ_MIDIPUTC;\
1497 	_seqbuf[_seqbufptr+1] = (byte);\
1498 	_seqbuf[_seqbufptr+2] = (device);\
1499 	_seqbuf[_seqbufptr+3] = 0;\
1500 	_SEQ_ADVBUF(4);}
1501 
1502 /*
1503  * Patch loading.
1504  */
1505 #define SEQ_WRPATCH(patchx, len)	{ \
1506 	if (_seqbufptr) seqbuf_dump(); \
1507 	if (write(seqfd, (char*)(patchx), len)==-1) \
1508 	   perror("Write patch: /dev/sequencer"); \
1509 	}
1510 
1511 #define SEQ_WRPATCH2(patchx, len)	\
1512 	( seqbuf_dump(), write(seqfd, (char*)(patchx), len) )
1513 
1514 #endif
1515 
1516 /*
1517  * Here I have moved all the aliases for ioctl names.
1518  */
1519 
1520 #define SNDCTL_DSP_SAMPLESIZE	SNDCTL_DSP_SETFMT
1521 #define SOUND_PCM_WRITE_BITS	SNDCTL_DSP_SETFMT
1522 #define SOUND_PCM_SETFMT	SNDCTL_DSP_SETFMT
1523 
1524 #define SOUND_PCM_WRITE_RATE	SNDCTL_DSP_SPEED
1525 #define SOUND_PCM_POST		SNDCTL_DSP_POST
1526 #define SOUND_PCM_RESET		SNDCTL_DSP_RESET
1527 #define SOUND_PCM_SYNC		SNDCTL_DSP_SYNC
1528 #define SOUND_PCM_SUBDIVIDE	SNDCTL_DSP_SUBDIVIDE
1529 #define SOUND_PCM_SETFRAGMENT	SNDCTL_DSP_SETFRAGMENT
1530 #define SOUND_PCM_GETFMTS	SNDCTL_DSP_GETFMTS
1531 #define SOUND_PCM_GETOSPACE	SNDCTL_DSP_GETOSPACE
1532 #define SOUND_PCM_GETISPACE	SNDCTL_DSP_GETISPACE
1533 #define SOUND_PCM_NONBLOCK	SNDCTL_DSP_NONBLOCK
1534 #define SOUND_PCM_GETCAPS	SNDCTL_DSP_GETCAPS
1535 #define SOUND_PCM_GETTRIGGER	SNDCTL_DSP_GETTRIGGER
1536 #define SOUND_PCM_SETTRIGGER	SNDCTL_DSP_SETTRIGGER
1537 #define SOUND_PCM_SETSYNCRO	SNDCTL_DSP_SETSYNCRO
1538 #define SOUND_PCM_GETIPTR	SNDCTL_DSP_GETIPTR
1539 #define SOUND_PCM_GETOPTR	SNDCTL_DSP_GETOPTR
1540 #define SOUND_PCM_MAPINBUF	SNDCTL_DSP_MAPINBUF
1541 #define SOUND_PCM_MAPOUTBUF	SNDCTL_DSP_MAPOUTBUF
1542 
1543 /***********************************************************************/
1544 
1545 /**
1546  * XXX OSSv4 defines -- some bits taken straight out of the new
1547  * sys/soundcard.h bundled with recent OSS releases.
1548  *
1549  * NB:  These macros and structures will be reorganized and inserted
1550  * 	in appropriate places throughout this file once the code begins
1551  * 	to take shape.
1552  *
1553  * @todo reorganize layout more like the 4Front version
1554  * @todo ask about maintaining __SIOWR vs. _IOWR ioctl cmd defines
1555  */
1556 
1557 /**
1558  * @note The @c OSSV4_EXPERIMENT macro is meant to wrap new development code
1559  * in the sound system relevant to adopting 4Front's OSSv4 specification.
1560  * Users should not enable this!  Really!
1561  */
1562 #if 0
1563 # define OSSV4_EXPERIMENT 1
1564 #else
1565 # undef OSSV4_EXPERIMENT
1566 #endif
1567 
1568 #ifdef SOUND_VERSION
1569 # undef SOUND_VERSION
1570 # define SOUND_VERSION	0x040000
1571 #endif	/* !SOUND_VERSION */
1572 
1573 #define OSS_LONGNAME_SIZE	64
1574 #define OSS_LABEL_SIZE		16
1575 #define OSS_DEVNODE_SIZE        32
1576 typedef char oss_longname_t[OSS_LONGNAME_SIZE];
1577 typedef char oss_label_t[OSS_LABEL_SIZE];
1578 typedef char oss_devnode_t[OSS_DEVNODE_SIZE];
1579 
1580 typedef struct audio_errinfo
1581 {
1582 	int		play_underruns;
1583 	int		rec_overruns;
1584 	unsigned int	play_ptradjust;
1585 	unsigned int	rec_ptradjust;
1586 	int		play_errorcount;
1587 	int		rec_errorcount;
1588 	int		play_lasterror;
1589 	int		rec_lasterror;
1590 	long		play_errorparm;
1591 	long		rec_errorparm;
1592 	int		filler[16];
1593 } audio_errinfo;
1594 
1595 #define SNDCTL_DSP_GETPLAYVOL           _IOR ('P', 24, int)
1596 #define SNDCTL_DSP_SETPLAYVOL           _IOWR('P', 24, int)
1597 #define SNDCTL_DSP_GETERROR             _IOR ('P', 25, audio_errinfo)
1598 
1599 
1600 /*
1601  ****************************************************************************
1602  * Sync groups for audio devices
1603  */
1604 typedef struct oss_syncgroup
1605 {
1606   int id;
1607   int mode;
1608   int filler[16];
1609 } oss_syncgroup;
1610 
1611 #define SNDCTL_DSP_SYNCGROUP            _IOWR('P', 28, oss_syncgroup)
1612 #define SNDCTL_DSP_SYNCSTART            _IOW ('P', 29, int)
1613 
1614 /*
1615  **************************************************************************
1616  * "cooked" mode enables software based conversions for sample rate, sample
1617  * format (bits) and number of channels (mono/stereo). These conversions are
1618  * required with some devices that support only one sample rate or just stereo
1619  * to let the applications to use other formats. The cooked mode is enabled by
1620  * default. However it's necessary to disable this mode when mmap() is used or
1621  * when very deterministic timing is required. SNDCTL_DSP_COOKEDMODE is an
1622  * optional call introduced in OSS 3.9.6f. It's _error return must be ignored_
1623  * since normally this call will return erno=EINVAL.
1624  *
1625  * SNDCTL_DSP_COOKEDMODE must be called immediately after open before doing
1626  * anything else. Otherwise the call will not have any effect.
1627  */
1628 #define SNDCTL_DSP_COOKEDMODE           _IOW ('P', 30, int)
1629 
1630 /*
1631  **************************************************************************
1632  * SNDCTL_DSP_SILENCE and SNDCTL_DSP_SKIP are new calls in OSS 3.99.0
1633  * that can be used to implement pause/continue during playback (no effect
1634  * on recording).
1635  */
1636 #define SNDCTL_DSP_SILENCE              _IO  ('P', 31)
1637 #define SNDCTL_DSP_SKIP                 _IO  ('P', 32)
1638 
1639 /*
1640  ****************************************************************************
1641  * Abort transfer (reset) functions for input and output
1642  */
1643 #define SNDCTL_DSP_HALT_INPUT		_IO  ('P', 33)
1644 #define SNDCTL_DSP_RESET_INPUT	SNDCTL_DSP_HALT_INPUT	/* Old name */
1645 #define SNDCTL_DSP_HALT_OUTPUT		_IO  ('P', 34)
1646 #define SNDCTL_DSP_RESET_OUTPUT	SNDCTL_DSP_HALT_OUTPUT	/* Old name */
1647 
1648 /*
1649  ****************************************************************************
1650  * Low water level control
1651  */
1652 #define SNDCTL_DSP_LOW_WATER		_IOW ('P', 34, int)
1653 
1654 /** @todo Get rid of OSS_NO_LONG_LONG references? */
1655 
1656 /*
1657  ****************************************************************************
1658  * 64 bit pointer support. Only available in environments that support
1659  * the 64 bit (long long) integer type.
1660  */
1661 #ifndef OSS_NO_LONG_LONG
1662 typedef struct
1663 {
1664   long long samples;
1665   int fifo_samples;
1666   int filler[32];		/* For future use */
1667 } oss_count_t;
1668 
1669 #define SNDCTL_DSP_CURRENT_IPTR		_IOR ('P', 35, oss_count_t)
1670 #define SNDCTL_DSP_CURRENT_OPTR		_IOR ('P', 36, oss_count_t)
1671 #endif
1672 
1673 /*
1674  ****************************************************************************
1675  * Interface for selecting recording sources and playback output routings.
1676  */
1677 #define SNDCTL_DSP_GET_RECSRC_NAMES     _IOR ('P', 37, oss_mixer_enuminfo)
1678 #define SNDCTL_DSP_GET_RECSRC           _IOR ('P', 38, int)
1679 #define SNDCTL_DSP_SET_RECSRC           _IOWR('P', 38, int)
1680 
1681 #define SNDCTL_DSP_GET_PLAYTGT_NAMES    _IOR ('P', 39, oss_mixer_enuminfo)
1682 #define SNDCTL_DSP_GET_PLAYTGT          _IOR ('P', 40, int)
1683 #define SNDCTL_DSP_SET_PLAYTGT          _IOWR('P', 40, int)
1684 #define SNDCTL_DSP_GETRECVOL            _IOR ('P', 41, int)
1685 #define SNDCTL_DSP_SETRECVOL            _IOWR('P', 41, int)
1686 
1687 /*
1688  ***************************************************************************
1689  * Some calls for setting the channel assignment with multi channel devices
1690  * (see the manual for details).                                                 */
1691 #define SNDCTL_DSP_GET_CHNORDER         _IOR ('P', 42, unsigned long long)
1692 #define SNDCTL_DSP_SET_CHNORDER         _IOWR('P', 42, unsigned long long)
1693 #       define CHID_UNDEF       0
1694 #       define CHID_L           1
1695 #       define CHID_R           2
1696 #       define CHID_C           3
1697 #       define CHID_LFE         4
1698 #       define CHID_LS          5
1699 #       define CHID_RS          6
1700 #       define CHID_LR          7
1701 #       define CHID_RR          8
1702 #define CHNORDER_UNDEF          0x0000000000000000ULL
1703 #define CHNORDER_NORMAL         0x0000000087654321ULL
1704 
1705 #define MAX_PEAK_CHANNELS	128
1706 typedef unsigned short oss_peaks_t[MAX_PEAK_CHANNELS];
1707 #define SNDCTL_DSP_GETIPEAKS		_IOR('P', 43, oss_peaks_t)
1708 #define SNDCTL_DSP_GETOPEAKS		_IOR('P', 44, oss_peaks_t)
1709 #define SNDCTL_DSP_POLICY               _IOW('P', 45, int)    /* See the manual */
1710 
1711 /*
1712  ****************************************************************************
1713  * Few ioctl calls that are not official parts of OSS. They have been used
1714  * by few freeware implementations of OSS.
1715  */
1716 #define SNDCTL_DSP_GETCHANNELMASK	_IOWR('P', 64, int)
1717 #define SNDCTL_DSP_BIND_CHANNEL		_IOWR('P', 65, int)
1718 #define DSP_BIND_QUERY			0x00000000
1719 #define DSP_BIND_FRONT			0x00000001
1720 #define DSP_BIND_SURR			0x00000002
1721 #define DSP_BIND_CENTER_LFE		0x00000004
1722 #define DSP_BIND_HANDSET		0x00000008
1723 #define DSP_BIND_MIC			0x00000010
1724 #define DSP_BIND_MODEM1			0x00000020
1725 #define DSP_BIND_MODEM2			0x00000040
1726 #define DSP_BIND_I2S			0x00000080
1727 #define DSP_BIND_SPDIF			0x00000100
1728 #define DSP_BIND_REAR			0x00000200
1729 
1730 /*
1731  * OSS_SYSIFO is obsolete. Use SNDCTL_SYSINFO insteads.
1732  */
1733 #define OSS_GETVERSION                  _IOR ('M', 118, int)
1734 
1735 /**
1736  * @brief	Argument for SNDCTL_SYSINFO ioctl.
1737  *
1738  * For use w/ the SNDCTL_SYSINFO ioctl available on audio (/dev/dsp*),
1739  * mixer, and MIDI devices.
1740  */
1741 typedef struct oss_sysinfo
1742 {
1743 	char	product[32];	/* For example OSS/Free, OSS/Linux or
1744 				   OSS/Solaris */
1745 	char	version[32];	/* For example 4.0a */
1746 	int	versionnum;	/* See OSS_GETVERSION */
1747 	char	options[128];	/* Reserved */
1748 
1749 	int	numaudios;	/* # of audio/dsp devices */
1750 	int	openedaudio[8];	/* Bit mask telling which audio devices
1751 				   are busy */
1752 
1753 	int	numsynths;	/* # of availavle synth devices */
1754 	int	nummidis;	/* # of available MIDI ports */
1755 	int	numtimers;	/* # of available timer devices */
1756 	int	nummixers;	/* # of mixer devices */
1757 
1758 	int	openedmidi[8];	/* Bit mask telling which midi devices
1759 				   are busy */
1760 	int	numcards;	/* Number of sound cards in the system */
1761 	int	numaudioengines;	/* Number of audio engines in the system */
1762 	char	license[16];	/* For example "GPL" or "CDDL" */
1763 	char	revision_info[256];	/* For internal use */
1764 	int	filler[172];	/* For future expansion (set to -1) */
1765 } oss_sysinfo;
1766 
1767 typedef struct oss_mixext
1768 {
1769   int dev;			/* Mixer device number */
1770   int ctrl;			/* Controller number */
1771   int type;			/* Entry type */
1772 #	define MIXT_DEVROOT	 0	/* Device root entry */
1773 #	define MIXT_GROUP	 1	/* Controller group */
1774 #	define MIXT_ONOFF	 2	/* OFF (0) or ON (1) */
1775 #	define MIXT_ENUM	 3	/* Enumerated (0 to maxvalue) */
1776 #	define MIXT_MONOSLIDER	 4	/* Mono slider (0 to 100) */
1777 #	define MIXT_STEREOSLIDER 5	/* Stereo slider (dual 0 to 100) */
1778 #	define MIXT_MESSAGE	 6	/* (Readable) textual message */
1779 #	define MIXT_MONOVU	 7	/* VU meter value (mono) */
1780 #	define MIXT_STEREOVU	 8	/* VU meter value (stereo) */
1781 #	define MIXT_MONOPEAK	 9	/* VU meter peak value (mono) */
1782 #	define MIXT_STEREOPEAK	10	/* VU meter peak value (stereo) */
1783 #	define MIXT_RADIOGROUP	11	/* Radio button group */
1784 #	define MIXT_MARKER	12	/* Separator between normal and extension entries */
1785 #	define MIXT_VALUE	13	/* Decimal value entry */
1786 #	define MIXT_HEXVALUE	14	/* Hexadecimal value entry */
1787 #	define MIXT_MONODB	15	/* Mono atten. slider (0 to -144) */
1788 #	define MIXT_STEREODB	16	/* Stereo atten. slider (dual 0 to -144) */
1789 #	define MIXT_SLIDER	17	/* Slider (mono) with full integer range */
1790 #	define MIXT_3D		18
1791 
1792   /* Possible value range (minvalue to maxvalue) */
1793   /* Note that maxvalue may also be smaller than minvalue */
1794   int maxvalue;
1795   int minvalue;
1796 
1797   int flags;
1798 #	define MIXF_READABLE	0x00000001	/* Has readable value */
1799 #	define MIXF_WRITEABLE	0x00000002	/* Has writeable value */
1800 #	define MIXF_POLL	0x00000004	/* May change itself */
1801 #	define MIXF_HZ		0x00000008	/* Herz scale */
1802 #	define MIXF_STRING	0x00000010	/* Use dynamic extensions for value */
1803 #	define MIXF_DYNAMIC	0x00000010	/* Supports dynamic extensions */
1804 #	define MIXF_OKFAIL	0x00000020	/* Interpret value as 1=OK, 0=FAIL */
1805 #	define MIXF_FLAT	0x00000040	/* Flat vertical space requirements */
1806 #	define MIXF_LEGACY	0x00000080	/* Legacy mixer control group */
1807   char id[16];			/* Mnemonic ID (mainly for internal use) */
1808   int parent;			/* Entry# of parent (group) node (-1 if root) */
1809 
1810   int dummy;			/* Internal use */
1811 
1812   int timestamp;
1813 
1814   char data[64];		/* Misc data (entry type dependent) */
1815   unsigned char enum_present[32];	/* Mask of allowed enum values */
1816   int control_no;		/* SOUND_MIXER_VOLUME..SOUND_MIXER_MIDI */
1817   /* (-1 means not indicated) */
1818 
1819 /*
1820  * The desc field is reserved for internal purposes of OSS. It should not be
1821  * used by applications.
1822  */
1823   unsigned int desc;
1824 #define MIXEXT_SCOPE_MASK			0x0000003f
1825 #define MIXEXT_SCOPE_OTHER			0x00000000
1826 #define MIXEXT_SCOPE_INPUT			0x00000001
1827 #define MIXEXT_SCOPE_OUTPUT			0x00000002
1828 #define MIXEXT_SCOPE_MONITOR			0x00000003
1829 #define MIXEXT_SCOPE_RECSWITCH			0x00000004
1830 
1831   char extname[32];
1832   int update_counter;
1833   int filler[7];
1834 } oss_mixext;
1835 
1836 typedef struct oss_mixext_root
1837 {
1838   char id[16];
1839   char name[48];
1840 } oss_mixext_root;
1841 
1842 typedef struct oss_mixer_value
1843 {
1844   int dev;
1845   int ctrl;
1846   int value;
1847   int flags;			/* Reserved for future use. Initialize to 0 */
1848   int timestamp;		/* Must be set to oss_mixext.timestamp */
1849   int filler[8];		/* Reserved for future use. Initialize to 0 */
1850 } oss_mixer_value;
1851 
1852 #define OSS_ENUM_MAXVALUE       255
1853 typedef struct oss_mixer_enuminfo
1854 {
1855 	int	dev;
1856 	int	ctrl;
1857 	int	nvalues;
1858 	int	version;                  /* Read the manual */
1859 	short	strindex[OSS_ENUM_MAXVALUE];
1860 	char	strings[3000];
1861 } oss_mixer_enuminfo;
1862 
1863 #define OPEN_READ       PCM_ENABLE_INPUT
1864 #define OPEN_WRITE      PCM_ENABLE_OUTPUT
1865 #define OPEN_READWRITE  (OPEN_READ|OPEN_WRITE)
1866 
1867 /**
1868  * @brief	Argument for SNDCTL_AUDIOINFO ioctl.
1869  *
1870  * For use w/ the SNDCTL_AUDIOINFO ioctl available on audio (/dev/dsp*)
1871  * devices.
1872  */
1873 typedef struct oss_audioinfo
1874 {
1875 	int	dev;		/* Audio device number */
1876 	char	name[64];
1877 	int	busy;		/* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
1878 	int	pid;
1879 	int	caps;		/* DSP_CAP_INPUT, DSP_CAP_OUTPUT */
1880 	int	iformats;
1881 	int	oformats;
1882 	int	magic;		/* Reserved for internal use */
1883 	char 	cmd[64];	/* Command using the device (if known) */
1884 	int	card_number;
1885 	int	port_number;
1886 	int	mixer_dev;
1887 	int	real_device;	/* Obsolete field. Replaced by devnode */
1888 	int	enabled;	/* 1=enabled, 0=device not ready at this
1889 				   moment */
1890 	int	flags;		/* For internal use only - no practical
1891 				   meaning */
1892 	int	min_rate;	/* Sample rate limits */
1893 	int	max_rate;
1894 	int	min_channels;	/* Number of channels supported */
1895 	int	max_channels;
1896 	int	binding;	/* DSP_BIND_FRONT, etc. 0 means undefined */
1897 	int	rate_source;
1898 	char	handle[32];
1899 	#define OSS_MAX_SAMPLE_RATES	20	/* Cannot be changed  */
1900 	unsigned int nrates;
1901 	unsigned int rates[OSS_MAX_SAMPLE_RATES]; /* Please read the manual before using these */
1902 	oss_longname_t	song_name;	/* Song name (if given) */
1903 	oss_label_t	label;		/* Device label (if given) */
1904 	int		latency;	/* In usecs, -1=unknown */
1905 	oss_devnode_t	devnode;	/* Device special file name (inside
1906 					   /dev) */
1907 	int next_play_engine;
1908 	int next_rec_engine;
1909 	int filler[184];
1910 } oss_audioinfo;
1911 
1912 typedef struct oss_mixerinfo
1913 {
1914   int dev;
1915   char id[16];
1916   char name[32];
1917   int modify_counter;
1918   int card_number;
1919   int port_number;
1920   char handle[32];
1921   int magic;			/* Reserved */
1922   int enabled;			/* Reserved */
1923   int caps;
1924 #define MIXER_CAP_VIRTUAL				0x00000001
1925   int flags;			/* Reserved */
1926   int nrext;
1927   /*
1928    * The priority field can be used to select the default (motherboard)
1929    * mixer device. The mixer with the highest priority is the
1930    * most preferred one. -2 or less means that this device cannot be used
1931    * as the default mixer.
1932    */
1933   int priority;
1934   int filler[254];		/* Reserved */
1935 } oss_mixerinfo;
1936 
1937 typedef struct oss_midi_info
1938 {
1939   int dev;			/* Midi device number */
1940   char name[64];
1941   int busy;			/* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
1942   int pid;
1943   char cmd[64];			/* Command using the device (if known) */
1944   int caps;
1945 #define MIDI_CAP_MPU401		0x00000001	/**** OBSOLETE ****/
1946 #define MIDI_CAP_INPUT		0x00000002
1947 #define MIDI_CAP_OUTPUT		0x00000004
1948 #define MIDI_CAP_INOUT		(MIDI_CAP_INPUT|MIDI_CAP_OUTPUT)
1949 #define MIDI_CAP_VIRTUAL	0x00000008	/* Pseudo device */
1950 #define MIDI_CAP_MTCINPUT	0x00000010	/* Supports SNDCTL_MIDI_MTCINPUT */
1951 #define MIDI_CAP_CLIENT		0x00000020	/* Virtual client side device */
1952 #define MIDI_CAP_SERVER		0x00000040	/* Virtual server side device */
1953 #define MIDI_CAP_INTERNAL	0x00000080	/* Internal (synth) device */
1954 #define MIDI_CAP_EXTERNAL	0x00000100	/* external (MIDI port) device */
1955 #define MIDI_CAP_PTOP		0x00000200	/* Point to point link to one device */
1956 #define MIDI_CAP_MTC		0x00000400	/* MTC/SMPTE (control) device */
1957   int magic;			/* Reserved for internal use */
1958   int card_number;
1959   int port_number;
1960   int enabled;			/* 1=enabled, 0=device not ready at this moment */
1961   int flags;			/* For internal use only - no practical meaning */
1962   char handle[32];
1963   oss_longname_t song_name;	/* Song name (if known) */
1964   oss_label_t label;		/* Device label (if given) */
1965   int latency;			/* In usecs, -1=unknown */
1966   int filler[244];
1967 } oss_midi_info;
1968 
1969 typedef struct oss_card_info
1970 {
1971   int card;
1972   char shortname[16];
1973   char longname[128];
1974   int flags;
1975   char hw_info[400];
1976   int intr_count, ack_count;
1977   int filler[154];
1978 } oss_card_info;
1979 
1980 #define SNDCTL_SYSINFO          _IOR ('X', 1, oss_sysinfo)
1981 #define OSS_SYSINFO             SNDCTL_SYSINFO /* Old name */
1982 
1983 #define SNDCTL_MIX_NRMIX	_IOR ('X', 2, int)
1984 #define SNDCTL_MIX_NREXT	_IOWR('X', 3, int)
1985 #define SNDCTL_MIX_EXTINFO	_IOWR('X', 4, oss_mixext)
1986 #define SNDCTL_MIX_READ		_IOWR('X', 5, oss_mixer_value)
1987 #define SNDCTL_MIX_WRITE	_IOWR('X', 6, oss_mixer_value)
1988 
1989 #define SNDCTL_AUDIOINFO	_IOWR('X', 7, oss_audioinfo)
1990 #define SNDCTL_MIX_ENUMINFO	_IOWR('X', 8, oss_mixer_enuminfo)
1991 #define SNDCTL_MIDIINFO		_IOWR('X', 9, oss_midi_info)
1992 #define SNDCTL_MIXERINFO	_IOWR('X',10, oss_mixerinfo)
1993 #define SNDCTL_CARDINFO		_IOWR('X',11, oss_card_info)
1994 #define SNDCTL_ENGINEINFO	_IOWR('X',12, oss_audioinfo)
1995 #define SNDCTL_AUDIOINFO_EX	_IOWR('X',13, oss_audioinfo)
1996 
1997 /*
1998  * Few more "globally" available ioctl calls.
1999  */
2000 #define SNDCTL_SETSONG          _IOW ('Y', 2, oss_longname_t)
2001 #define SNDCTL_GETSONG          _IOR ('Y', 2, oss_longname_t)
2002 #define SNDCTL_SETNAME          _IOW ('Y', 3, oss_longname_t)
2003 #define SNDCTL_SETLABEL         _IOW ('Y', 4, oss_label_t)
2004 #define SNDCTL_GETLABEL         _IOR ('Y', 4, oss_label_t)
2005 
2006 #endif	/* !_SYS_SOUNDCARD_H_ */
2007