xref: /freebsd/sys/sys/soundcard.h (revision bbf71b31)
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 
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 /*
175  * 32-bit formats below used for 24-bit audio data where the data is stored
176  * in the 24 most significant bits and the least significant bits are not used
177  * (should be set to 0).
178  */
179 #define AFMT_S32_LE	0x00001000	/* Little endian signed 32-bit */
180 #define AFMT_S32_BE	0x00002000	/* Big endian signed 32-bit */
181 #define AFMT_U32_LE	0x00004000	/* Little endian unsigned 32-bit */
182 #define AFMT_U32_BE	0x00008000	/* Big endian unsigned 32-bit */
183 #define AFMT_S24_LE	0x00010000	/* Little endian signed 24-bit */
184 #define AFMT_S24_BE	0x00020000	/* Big endian signed 24-bit */
185 #define AFMT_U24_LE	0x00040000	/* Little endian unsigned 24-bit */
186 #define AFMT_U24_BE	0x00080000	/* Big endian unsigned 24-bit */
187 
188 /* Machine dependent AFMT_* definitions. */
189 #if BYTE_ORDER == LITTLE_ENDIAN
190 #define AFMT_S16_NE	AFMT_S16_LE
191 #define AFMT_S24_NE	AFMT_S24_LE
192 #define AFMT_S32_NE	AFMT_S32_LE
193 #define AFMT_U16_NE	AFMT_U16_LE
194 #define AFMT_U24_NE	AFMT_U24_LE
195 #define AFMT_U32_NE	AFMT_U32_LE
196 #define AFMT_S16_OE	AFMT_S16_BE
197 #define AFMT_S24_OE	AFMT_S24_BE
198 #define AFMT_S32_OE	AFMT_S32_BE
199 #define AFMT_U16_OE	AFMT_U16_BE
200 #define AFMT_U24_OE	AFMT_U24_BE
201 #define AFMT_U32_OE	AFMT_U32_BE
202 #else
203 #define AFMT_S16_OE	AFMT_S16_LE
204 #define AFMT_S24_OE	AFMT_S24_LE
205 #define AFMT_S32_OE	AFMT_S32_LE
206 #define AFMT_U16_OE	AFMT_U16_LE
207 #define AFMT_U24_OE	AFMT_U24_LE
208 #define AFMT_U32_OE	AFMT_U32_LE
209 #define AFMT_S16_NE	AFMT_S16_BE
210 #define AFMT_S24_NE	AFMT_S24_BE
211 #define AFMT_S32_NE	AFMT_S32_BE
212 #define AFMT_U16_NE	AFMT_U16_BE
213 #define AFMT_U24_NE	AFMT_U24_BE
214 #define AFMT_U32_NE	AFMT_U32_BE
215 #endif
216 
217 #define AFMT_STEREO	0x10000000	/* can do/want stereo	*/
218 
219 /*
220  * the following are really capabilities
221  */
222 #define AFMT_WEIRD	0x20000000	/* weird hardware...	*/
223     /*
224      * AFMT_WEIRD reports that the hardware might need to operate
225      * with different formats in the playback and capture
226      * channels when operating in full duplex.
227      * As an example, SoundBlaster16 cards only support U8 in one
228      * direction and S16 in the other one, and applications should
229      * be aware of this limitation.
230      */
231 #define AFMT_FULLDUPLEX	0x80000000	/* can do full duplex	*/
232 
233 /*
234  * The following structure is used to get/set format and sampling rate.
235  * While it would be better to have things such as stereo, bits per
236  * sample, endiannes, etc split in different variables, it turns out
237  * that formats are not that many, and not all combinations are possible.
238  * So we followed the Voxware approach of associating one bit to each
239  * format.
240  */
241 
242 typedef struct _snd_chan_param {
243     u_long	play_rate;	/* sampling rate			*/
244     u_long	rec_rate;	/* sampling rate			*/
245     u_long	play_format;	/* everything describing the format	*/
246     u_long	rec_format;	/* everything describing the format	*/
247 } snd_chan_param;
248 #define	AIOGFMT    _IOR('f', 12, snd_chan_param)   /* get format */
249 #define	AIOSFMT    _IOWR('f', 12, snd_chan_param)  /* sets format */
250 
251 /*
252  * The following structure is used to get/set the mixer setting.
253  * Up to 32 mixers are supported, each one with up to 32 channels.
254  */
255 typedef struct _snd_mix_param {
256     u_char	subdev;	/* which output				*/
257     u_char	line;	/* which input				*/
258     u_char	left,right; /* volumes, 0..255, 0 = mute	*/
259 } snd_mix_param ;
260 
261 /* XXX AIOGMIX, AIOSMIX not implemented yet */
262 #define AIOGMIX	_IOWR('A', 13, snd_mix_param)	/* return mixer status */
263 #define AIOSMIX	_IOWR('A', 14, snd_mix_param)	/* sets mixer status   */
264 
265 /*
266  * channel specifiers used in AIOSTOP and AIOSYNC
267  */
268 #define	AIOSYNC_PLAY	0x1	/* play chan */
269 #define	AIOSYNC_CAPTURE	0x2	/* capture chan */
270 /* AIOSTOP stop & flush a channel, returns the residual count */
271 #define	AIOSTOP	_IOWR ('A', 15, int)
272 
273 /* alternate method used to notify the sync condition */
274 #define	AIOSYNC_SIGNAL	0x100
275 #define	AIOSYNC_SELECT	0x200
276 
277 /* what the 'pos' field refers to */
278 #define AIOSYNC_READY	0x400
279 #define AIOSYNC_FREE	0x800
280 
281 typedef struct _snd_sync_parm {
282     long chan ; /* play or capture channel, plus modifier */
283     long pos;
284 } snd_sync_parm;
285 #define	AIOSYNC	_IOWR ('A', 15, snd_sync_parm)	/* misc. synchronization */
286 
287 /*
288  * The following is used to return device capabilities. If the structure
289  * passed to the ioctl is zeroed, default values are returned for rate
290  * and formats, a bitmap of available mixers is returned, and values
291  * (inputs, different levels) for the first one are returned.
292  *
293  * If  formats, mixers, inputs are instantiated, then detailed info
294  * are returned depending on the call.
295  */
296 typedef struct _snd_capabilities {
297     u_long	rate_min, rate_max;	/* min-max sampling rate */
298     u_long	formats;
299     u_long	bufsize; /* DMA buffer size */
300     u_long	mixers; /* bitmap of available mixers */
301     u_long	inputs; /* bitmap of available inputs (per mixer) */
302     u_short	left, right;	/* how many levels are supported */
303 } snd_capabilities;
304 #define AIOGCAP	_IOWR('A', 15, snd_capabilities)	/* get capabilities */
305 
306 /*
307  * here is the old (Voxware) ioctl interface
308  */
309 
310 /*
311  * IOCTL Commands for /dev/sequencer
312  */
313 
314 #define SNDCTL_SEQ_RESET	_IO  ('Q', 0)
315 #define SNDCTL_SEQ_SYNC		_IO  ('Q', 1)
316 #define SNDCTL_SYNTH_INFO	_IOWR('Q', 2, struct synth_info)
317 #define SNDCTL_SEQ_CTRLRATE	_IOWR('Q', 3, int) /* Set/get timer res.(hz) */
318 #define SNDCTL_SEQ_GETOUTCOUNT	_IOR ('Q', 4, int)
319 #define SNDCTL_SEQ_GETINCOUNT	_IOR ('Q', 5, int)
320 #define SNDCTL_SEQ_PERCMODE	_IOW ('Q', 6, int)
321 #define SNDCTL_FM_LOAD_INSTR	_IOW ('Q', 7, struct sbi_instrument)	/* Valid for FM only */
322 #define SNDCTL_SEQ_TESTMIDI	_IOW ('Q', 8, int)
323 #define SNDCTL_SEQ_RESETSAMPLES	_IOW ('Q', 9, int)
324 #define SNDCTL_SEQ_NRSYNTHS	_IOR ('Q',10, int)
325 #define SNDCTL_SEQ_NRMIDIS	_IOR ('Q',11, int)
326 #define SNDCTL_MIDI_INFO	_IOWR('Q',12, struct midi_info)
327 #define SNDCTL_SEQ_THRESHOLD	_IOW ('Q',13, int)
328 #define SNDCTL_SEQ_TRESHOLD	SNDCTL_SEQ_THRESHOLD	/* there was once a typo */
329 #define SNDCTL_SYNTH_MEMAVL	_IOWR('Q',14, int) /* in=dev#, out=memsize */
330 #define SNDCTL_FM_4OP_ENABLE	_IOW ('Q',15, int) /* in=dev# */
331 #define SNDCTL_PMGR_ACCESS	_IOWR('Q',16, struct patmgr_info)
332 #define SNDCTL_SEQ_PANIC	_IO  ('Q',17)
333 #define SNDCTL_SEQ_OUTOFBAND	_IOW ('Q',18, struct seq_event_rec)
334 #define SNDCTL_SEQ_GETTIME	_IOR ('Q',19, int)
335 
336 struct seq_event_rec {
337 	u_char arr[8];
338 };
339 
340 #define SNDCTL_TMR_TIMEBASE	_IOWR('T', 1, int)
341 #define SNDCTL_TMR_START	_IO  ('T', 2)
342 #define SNDCTL_TMR_STOP		_IO  ('T', 3)
343 #define SNDCTL_TMR_CONTINUE	_IO  ('T', 4)
344 #define SNDCTL_TMR_TEMPO	_IOWR('T', 5, int)
345 #define SNDCTL_TMR_SOURCE	_IOWR('T', 6, int)
346 #   define TMR_INTERNAL		0x00000001
347 #   define TMR_EXTERNAL		0x00000002
348 #	define TMR_MODE_MIDI	0x00000010
349 #	define TMR_MODE_FSK	0x00000020
350 #	define TMR_MODE_CLS	0x00000040
351 #	define TMR_MODE_SMPTE	0x00000080
352 #define SNDCTL_TMR_METRONOME	_IOW ('T', 7, int)
353 #define SNDCTL_TMR_SELECT	_IOW ('T', 8, int)
354 
355 /*
356  *	Endian aware patch key generation algorithm.
357  */
358 
359 #if defined(_AIX) || defined(AIX)
360 #  define _PATCHKEY(id) (0xfd00|id)
361 #else
362 #  define _PATCHKEY(id) ((id<<8)|0xfd)
363 #endif
364 
365 /*
366  *	Sample loading mechanism for internal synthesizers (/dev/sequencer)
367  *	The following patch_info structure has been designed to support
368  *	Gravis UltraSound. It tries to be universal format for uploading
369  *	sample based patches but is probably too limited.
370  */
371 
372 struct patch_info {
373 /*		u_short key;		 Use GUS_PATCH here */
374 	short key;		 /* Use GUS_PATCH here */
375 #define GUS_PATCH	_PATCHKEY(0x04)
376 #define OBSOLETE_GUS_PATCH	_PATCHKEY(0x02)
377 
378 	short device_no;	/* Synthesizer number */
379 	short instr_no;		/* Midi pgm# */
380 
381 	u_long mode;
382 /*
383  * The least significant byte has the same format than the GUS .PAT
384  * files
385  */
386 #define WAVE_16_BITS	0x01	/* bit 0 = 8 or 16 bit wave data. */
387 #define WAVE_UNSIGNED	0x02	/* bit 1 = Signed - Unsigned data. */
388 #define WAVE_LOOPING	0x04	/* bit 2 = looping enabled-1. */
389 #define WAVE_BIDIR_LOOP	0x08	/* bit 3 = Set is bidirectional looping. */
390 #define WAVE_LOOP_BACK	0x10	/* bit 4 = Set is looping backward. */
391 #define WAVE_SUSTAIN_ON	0x20	/* bit 5 = Turn sustaining on. (Env. pts. 3)*/
392 #define WAVE_ENVELOPES	0x40	/* bit 6 = Enable envelopes - 1 */
393 				/* 	(use the env_rate/env_offs fields). */
394 /* Linux specific bits */
395 #define WAVE_VIBRATO	0x00010000	/* The vibrato info is valid */
396 #define WAVE_TREMOLO	0x00020000	/* The tremolo info is valid */
397 #define WAVE_SCALE	0x00040000	/* The scaling info is valid */
398 /* Other bits must be zeroed */
399 
400 	long len;	/* Size of the wave data in bytes */
401 	long loop_start, loop_end; /* Byte offsets from the beginning */
402 
403 /*
404  * The base_freq and base_note fields are used when computing the
405  * playback speed for a note. The base_note defines the tone frequency
406  * which is heard if the sample is played using the base_freq as the
407  * playback speed.
408  *
409  * The low_note and high_note fields define the minimum and maximum note
410  * frequencies for which this sample is valid. It is possible to define
411  * more than one samples for an instrument number at the same time. The
412  * low_note and high_note fields are used to select the most suitable one.
413  *
414  * The fields base_note, high_note and low_note should contain
415  * the note frequency multiplied by 1000. For example value for the
416  * middle A is 440*1000.
417  */
418 
419 	u_int base_freq;
420 	u_long base_note;
421 	u_long high_note;
422 	u_long low_note;
423 	int panning;	/* -128=left, 127=right */
424 	int detuning;
425 
426 /*	New fields introduced in version 1.99.5	*/
427 
428        /* Envelope. Enabled by mode bit WAVE_ENVELOPES	*/
429 	u_char	env_rate[ 6 ];	 /* GUS HW ramping rate */
430 	u_char	env_offset[ 6 ]; /* 255 == 100% */
431 
432 	/*
433 	 * The tremolo, vibrato and scale info are not supported yet.
434 	 * Enable by setting the mode bits WAVE_TREMOLO, WAVE_VIBRATO or
435 	 * WAVE_SCALE
436 	 */
437 
438 	u_char	tremolo_sweep;
439 	u_char	tremolo_rate;
440 	u_char	tremolo_depth;
441 
442 	u_char	vibrato_sweep;
443 	u_char	vibrato_rate;
444 	u_char	vibrato_depth;
445 
446 	int		scale_frequency;
447 	u_int	scale_factor;		/* from 0 to 2048 or 0 to 2 */
448 
449 	int		volume;
450 	int		spare[4];
451 	char data[1];	/* The waveform data starts here */
452 };
453 
454 struct sysex_info {
455 	short key;		/* Use GUS_PATCH here */
456 #define SYSEX_PATCH	_PATCHKEY(0x05)
457 #define MAUI_PATCH	_PATCHKEY(0x06)
458 	short device_no;	/* Synthesizer number */
459 	long len;	/* Size of the sysex data in bytes */
460 	u_char data[1];	/* Sysex data starts here */
461 };
462 
463 /*
464  * Patch management interface (/dev/sequencer, /dev/patmgr#)
465  * Don't use these calls if you want to maintain compatibility with
466  * the future versions of the driver.
467  */
468 
469 #define PS_NO_PATCHES		0	/* No patch support on device */
470 #define	PS_MGR_NOT_OK		1	/* Plain patch support (no mgr) */
471 #define	PS_MGR_OK		2	/* Patch manager supported */
472 #define	PS_MANAGED		3	/* Patch manager running */
473 
474 #define SNDCTL_PMGR_IFACE		_IOWR('P', 1, struct patmgr_info)
475 
476 /*
477  * The patmgr_info is a fixed size structure which is used for two
478  * different purposes. The intended use is for communication between
479  * the application using /dev/sequencer and the patch manager daemon
480  * associated with a synthesizer device (ioctl(SNDCTL_PMGR_ACCESS)).
481  *
482  * This structure is also used with ioctl(SNDCTL_PGMR_IFACE) which allows
483  * a patch manager daemon to read and write device parameters. This
484  * ioctl available through /dev/sequencer also. Avoid using it since it's
485  * extremely hardware dependent. In addition access through /dev/sequencer
486  * may confuse the patch manager daemon.
487  */
488 
489 struct patmgr_info {	/* Note! size must be < 4k since kmalloc() is used */
490 	  u_long key;	/* Don't worry. Reserved for communication
491 	  			   between the patch manager and the driver. */
492 #define PM_K_EVENT		1 /* Event from the /dev/sequencer driver */
493 #define PM_K_COMMAND		2 /* Request from an application */
494 #define PM_K_RESPONSE		3 /* From patmgr to application */
495 #define PM_ERROR		4 /* Error returned by the patmgr */
496 	  int device;
497 	  int command;
498 
499 /*
500  * Commands 0x000 to 0xfff reserved for patch manager programs
501  */
502 #define PM_GET_DEVTYPE	1	/* Returns type of the patch mgr interface of dev */
503 #define		PMTYPE_FM2	1	/* 2 OP fm */
504 #define		PMTYPE_FM4	2	/* Mixed 4 or 2 op FM (OPL-3) */
505 #define		PMTYPE_WAVE	3	/* Wave table synthesizer (GUS) */
506 #define PM_GET_NRPGM	2	/* Returns max # of midi programs in parm1 */
507 #define PM_GET_PGMMAP	3	/* Returns map of loaded midi programs in data8 */
508 #define PM_GET_PGM_PATCHES 4	/* Return list of patches of a program (parm1) */
509 #define PM_GET_PATCH	5	/* Return patch header of patch parm1 */
510 #define PM_SET_PATCH	6	/* Set patch header of patch parm1 */
511 #define PM_READ_PATCH	7	/* Read patch (wave) data */
512 #define PM_WRITE_PATCH	8	/* Write patch (wave) data */
513 
514 /*
515  * Commands 0x1000 to 0xffff are for communication between the patch manager
516  * and the client
517  */
518 #define _PM_LOAD_PATCH	0x100
519 
520 /*
521  * Commands above 0xffff reserved for device specific use
522  */
523 
524 	long parm1;
525 	long parm2;
526 	long parm3;
527 
528 	union {
529 		u_char data8[4000];
530 		u_short data16[2000];
531 		u_long data32[1000];
532 		struct patch_info patch;
533 	} data;
534 };
535 
536 /*
537  * When a patch manager daemon is present, it will be informed by the
538  * driver when something important happens. For example when the
539  * /dev/sequencer is opened or closed. A record with key == PM_K_EVENT is
540  * returned. The command field contains the event type:
541  */
542 #define PM_E_OPENED		1	/* /dev/sequencer opened */
543 #define PM_E_CLOSED		2	/* /dev/sequencer closed */
544 #define PM_E_PATCH_RESET	3	/* SNDCTL_RESETSAMPLES called */
545 #define PM_E_PATCH_LOADED	4	/* A patch has been loaded by appl */
546 
547 /*
548  * /dev/sequencer input events.
549  *
550  * The data written to the /dev/sequencer is a stream of events. Events
551  * are records of 4 or 8 bytes. The first byte defines the size.
552  * Any number of events can be written with a write call. There
553  * is a set of macros for sending these events. Use these macros if you
554  * want to maximize portability of your program.
555  *
556  * Events SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO. Are also input events.
557  * (All input events are currently 4 bytes long. Be prepared to support
558  * 8 byte events also. If you receive any event having first byte >= 128,
559  * it's a 8 byte event.
560  *
561  * The events are documented at the end of this file.
562  *
563  * Normal events (4 bytes)
564  * There is also a 8 byte version of most of the 4 byte events. The
565  * 8 byte one is recommended.
566  */
567 #define SEQ_NOTEOFF		0
568 #define SEQ_FMNOTEOFF		SEQ_NOTEOFF	/* Just old name */
569 #define SEQ_NOTEON		1
570 #define	SEQ_FMNOTEON		SEQ_NOTEON
571 #define SEQ_WAIT		TMR_WAIT_ABS
572 #define SEQ_PGMCHANGE		3
573 #define SEQ_FMPGMCHANGE		SEQ_PGMCHANGE
574 #define SEQ_SYNCTIMER		TMR_START
575 #define SEQ_MIDIPUTC		5
576 #define SEQ_DRUMON		6	/*** OBSOLETE ***/
577 #define SEQ_DRUMOFF		7	/*** OBSOLETE ***/
578 #define SEQ_ECHO		TMR_ECHO	/* For synching programs with output */
579 #define SEQ_AFTERTOUCH		9
580 #define SEQ_CONTROLLER		10
581 
582 /*
583  *	Midi controller numbers
584  *
585  * Controllers 0 to 31 (0x00 to 0x1f) and 32 to 63 (0x20 to 0x3f)
586  * are continuous controllers.
587  * In the MIDI 1.0 these controllers are sent using two messages.
588  * Controller numbers 0 to 31 are used to send the MSB and the
589  * controller numbers 32 to 63 are for the LSB. Note that just 7 bits
590  * are used in MIDI bytes.
591  */
592 
593 #define	CTL_BANK_SELECT		0x00
594 #define	CTL_MODWHEEL		0x01
595 #define CTL_BREATH		0x02
596 /*	undefined		0x03 */
597 #define CTL_FOOT		0x04
598 #define CTL_PORTAMENTO_TIME	0x05
599 #define CTL_DATA_ENTRY		0x06
600 #define CTL_MAIN_VOLUME		0x07
601 #define CTL_BALANCE		0x08
602 /*	undefined		0x09 */
603 #define CTL_PAN			0x0a
604 #define CTL_EXPRESSION		0x0b
605 /*	undefined		0x0c - 0x0f */
606 #define CTL_GENERAL_PURPOSE1	0x10
607 #define CTL_GENERAL_PURPOSE2	0x11
608 #define CTL_GENERAL_PURPOSE3	0x12
609 #define CTL_GENERAL_PURPOSE4	0x13
610 /*	undefined		0x14 - 0x1f */
611 
612 /*	undefined		0x20 */
613 
614 /*
615  * The controller numbers 0x21 to 0x3f are reserved for the
616  * least significant bytes of the controllers 0x00 to 0x1f.
617  * These controllers are not recognised by the driver.
618  *
619  * Controllers 64 to 69 (0x40 to 0x45) are on/off switches.
620  * 0=OFF and 127=ON (intermediate values are possible)
621  */
622 #define CTL_DAMPER_PEDAL	0x40
623 #define CTL_SUSTAIN		CTL_DAMPER_PEDAL	/* Alias */
624 #define CTL_HOLD		CTL_DAMPER_PEDAL	/* Alias */
625 #define CTL_PORTAMENTO		0x41
626 #define CTL_SOSTENUTO		0x42
627 #define CTL_SOFT_PEDAL		0x43
628 /*	undefined		0x44 */
629 #define CTL_HOLD2		0x45
630 /*	undefined		0x46 - 0x4f */
631 
632 #define CTL_GENERAL_PURPOSE5	0x50
633 #define CTL_GENERAL_PURPOSE6	0x51
634 #define CTL_GENERAL_PURPOSE7	0x52
635 #define CTL_GENERAL_PURPOSE8	0x53
636 /*	undefined		0x54 - 0x5a */
637 #define CTL_EXT_EFF_DEPTH	0x5b
638 #define CTL_TREMOLO_DEPTH	0x5c
639 #define CTL_CHORUS_DEPTH	0x5d
640 #define CTL_DETUNE_DEPTH	0x5e
641 #define CTL_CELESTE_DEPTH	CTL_DETUNE_DEPTH /* Alias for the above one */
642 #define CTL_PHASER_DEPTH	0x5f
643 #define CTL_DATA_INCREMENT	0x60
644 #define CTL_DATA_DECREMENT	0x61
645 #define CTL_NONREG_PARM_NUM_LSB	0x62
646 #define CTL_NONREG_PARM_NUM_MSB	0x63
647 #define CTL_REGIST_PARM_NUM_LSB	0x64
648 #define CTL_REGIST_PARM_NUM_MSB	0x65
649 /*	undefined		0x66 - 0x78 */
650 /*	reserved		0x79 - 0x7f */
651 
652 /* Pseudo controllers (not midi compatible) */
653 #define CTRL_PITCH_BENDER	255
654 #define CTRL_PITCH_BENDER_RANGE	254
655 #define CTRL_EXPRESSION		253	/* Obsolete */
656 #define CTRL_MAIN_VOLUME	252	/* Obsolete */
657 
658 #define SEQ_BALANCE		11
659 #define SEQ_VOLMODE             12
660 
661 /*
662  * Volume mode decides how volumes are used
663  */
664 
665 #define VOL_METHOD_ADAGIO	1
666 #define VOL_METHOD_LINEAR	2
667 
668 /*
669  * Note! SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO are used also as
670  *	 input events.
671  */
672 
673 /*
674  * Event codes 0xf0 to 0xfc are reserved for future extensions.
675  */
676 
677 #define SEQ_FULLSIZE		0xfd	/* Long events */
678 /*
679  * SEQ_FULLSIZE events are used for loading patches/samples to the
680  * synthesizer devices. These events are passed directly to the driver
681  * of the associated synthesizer device. There is no limit to the size
682  * of the extended events. These events are not queued but executed
683  * immediately when the write() is called (execution can take several
684  * seconds of time).
685  *
686  * When a SEQ_FULLSIZE message is written to the device, it must
687  * be written using exactly one write() call. Other events cannot
688  * be mixed to the same write.
689  *
690  * For FM synths (YM3812/OPL3) use struct sbi_instrument and write
691  * it to the /dev/sequencer. Don't write other data together with
692  * the instrument structure Set the key field of the structure to
693  * FM_PATCH. The device field is used to route the patch to the
694  * corresponding device.
695  *
696  * For Gravis UltraSound use struct patch_info. Initialize the key field
697  * to GUS_PATCH.
698  */
699 #define SEQ_PRIVATE	0xfe	/* Low level HW dependent events (8 bytes) */
700 #define SEQ_EXTENDED	0xff	/* Extended events (8 bytes) OBSOLETE */
701 
702 /*
703  * Record for FM patches
704  */
705 
706 typedef u_char sbi_instr_data[32];
707 
708 struct sbi_instrument {
709 	u_short	key;	/* FM_PATCH or OPL3_PATCH */
710 #define FM_PATCH	_PATCHKEY(0x01)
711 #define OPL3_PATCH	_PATCHKEY(0x03)
712 	short		device;		/* Synth# (0-4)	*/
713 	int 		channel;	/* Program# to be initialized  */
714 	sbi_instr_data	operators;	/* Reg. settings for operator cells
715 					 * (.SBI format)	*/
716 };
717 
718 struct synth_info {	/* Read only */
719 	char	name[30];
720 	int	device;		/* 0-N. INITIALIZE BEFORE CALLING */
721 	int	synth_type;
722 #define SYNTH_TYPE_FM			0
723 #define SYNTH_TYPE_SAMPLE		1
724 #define SYNTH_TYPE_MIDI			2	/* Midi interface */
725 
726 	int	synth_subtype;
727 #define FM_TYPE_ADLIB			0x00
728 #define FM_TYPE_OPL3			0x01
729 #define MIDI_TYPE_MPU401		0x401
730 
731 #define SAMPLE_TYPE_BASIC		0x10
732 #define SAMPLE_TYPE_GUS			SAMPLE_TYPE_BASIC
733 #define SAMPLE_TYPE_AWE32		0x20
734 
735 	int	perc_mode;	/* No longer supported */
736 	int	nr_voices;
737 	int	nr_drums;	/* Obsolete field */
738 	int	instr_bank_size;
739 	u_long	capabilities;
740 #define SYNTH_CAP_PERCMODE	0x00000001 /* No longer used */
741 #define SYNTH_CAP_OPL3		0x00000002 /* Set if OPL3 supported */
742 #define SYNTH_CAP_INPUT		0x00000004 /* Input (MIDI) device */
743 	int	dummies[19];	/* Reserve space */
744 };
745 
746 struct sound_timer_info {
747 	char name[32];
748 	int caps;
749 };
750 
751 struct midi_info {
752 	char		name[30];
753 	int		device;		/* 0-N. INITIALIZE BEFORE CALLING */
754 	u_long	capabilities;	/* To be defined later */
755 	int		dev_type;
756 	int		dummies[18];	/* Reserve space */
757 };
758 
759 /*
760  * ioctl commands for the /dev/midi##
761  */
762 typedef struct {
763 	u_char cmd;
764 	char nr_args, nr_returns;
765 	u_char data[30];
766 } mpu_command_rec;
767 
768 #define SNDCTL_MIDI_PRETIME	_IOWR('m', 0, int)
769 #define SNDCTL_MIDI_MPUMODE	_IOWR('m', 1, int)
770 #define SNDCTL_MIDI_MPUCMD	_IOWR('m', 2, mpu_command_rec)
771 #define MIOSPASSTHRU		_IOWR('m', 3, int)
772 #define MIOGPASSTHRU		_IOWR('m', 4, int)
773 
774 /*
775  * IOCTL commands for /dev/dsp and /dev/audio
776  */
777 
778 #define SNDCTL_DSP_HALT		_IO  ('P', 0)
779 #define SNDCTL_DSP_RESET	SNDCTL_DSP_HALT
780 #define SNDCTL_DSP_SYNC		_IO  ('P', 1)
781 #define SNDCTL_DSP_SPEED	_IOWR('P', 2, int)
782 #define SNDCTL_DSP_STEREO	_IOWR('P', 3, int)
783 #define SNDCTL_DSP_GETBLKSIZE	_IOR('P', 4, int)
784 #define SNDCTL_DSP_SETBLKSIZE   _IOW('P', 4, int)
785 #define SNDCTL_DSP_SETFMT	_IOWR('P',5, int) /* Selects ONE fmt*/
786 
787 /*
788  * SOUND_PCM_WRITE_CHANNELS is not that different
789  * from SNDCTL_DSP_STEREO
790  */
791 #define SOUND_PCM_WRITE_CHANNELS	_IOWR('P', 6, int)
792 #define SNDCTL_DSP_CHANNELS	SOUND_PCM_WRITE_CHANNELS
793 #define SOUND_PCM_WRITE_FILTER	_IOWR('P', 7, int)
794 #define SNDCTL_DSP_POST		_IO  ('P', 8)
795 
796 /*
797  * SNDCTL_DSP_SETBLKSIZE and the following two calls mostly do
798  * the same thing, i.e. set the block size used in DMA transfers.
799  */
800 #define SNDCTL_DSP_SUBDIVIDE	_IOWR('P', 9, int)
801 #define SNDCTL_DSP_SETFRAGMENT	_IOWR('P',10, int)
802 
803 #define SNDCTL_DSP_GETFMTS	_IOR ('P',11, int) /* Returns a mask */
804 /*
805  * Buffer status queries.
806  */
807 typedef struct audio_buf_info {
808     int fragments;	/* # of avail. frags (partly used ones not counted) */
809     int fragstotal;	/* Total # of fragments allocated */
810     int fragsize;	/* Size of a fragment in bytes */
811 
812     int bytes;	/* Avail. space in bytes (includes partly used fragments) */
813 		/* Note! 'bytes' could be more than fragments*fragsize */
814 } audio_buf_info;
815 
816 #define SNDCTL_DSP_GETOSPACE	_IOR ('P',12, audio_buf_info)
817 #define SNDCTL_DSP_GETISPACE	_IOR ('P',13, audio_buf_info)
818 
819 /*
820  * SNDCTL_DSP_NONBLOCK is the same (but less powerful, since the
821  * action cannot be undone) of FIONBIO. The same can be achieved
822  * by opening the device with O_NDELAY
823  */
824 #define SNDCTL_DSP_NONBLOCK	_IO  ('P',14)
825 
826 #define SNDCTL_DSP_GETCAPS	_IOR ('P',15, int)
827 #	define PCM_CAP_REVISION		0x000000ff	/* Bits for revision level (0 to 255) */
828 #	define PCM_CAP_DUPLEX		0x00000100	/* Full duplex record/playback */
829 #	define PCM_CAP_REALTIME		0x00000200	/* Not in use */
830 #	define PCM_CAP_BATCH		0x00000400	/* Device has some kind of */
831 							/* internal buffers which may */
832 							/* cause some delays and */
833 							/* decrease precision of timing */
834 #	define PCM_CAP_COPROC		0x00000800	/* Has a coprocessor */
835 							/* Sometimes it's a DSP */
836 							/* but usually not */
837 #	define PCM_CAP_TRIGGER		0x00001000	/* Supports SETTRIGGER */
838 #	define PCM_CAP_MMAP		0x00002000	/* Supports mmap() */
839 #	define PCM_CAP_MULTI		0x00004000	/* Supports multiple open */
840 #	define PCM_CAP_BIND		0x00008000	/* Supports binding to front/rear/center/lfe */
841 #   	define PCM_CAP_INPUT		0x00010000	/* Supports recording */
842 #   	define PCM_CAP_OUTPUT		0x00020000	/* Supports playback */
843 #	define PCM_CAP_VIRTUAL		0x00040000	/* Virtual device */
844 /* 0x00040000 and 0x00080000 reserved for future use */
845 
846 /* Analog/digital control capabilities */
847 #	define PCM_CAP_ANALOGOUT	0x00100000
848 #	define PCM_CAP_ANALOGIN		0x00200000
849 #	define PCM_CAP_DIGITALOUT	0x00400000
850 #	define PCM_CAP_DIGITALIN	0x00800000
851 #	define PCM_CAP_ADMASK		0x00f00000
852 /*
853  * NOTE! (capabilities & PCM_CAP_ADMASK)==0 means just that the
854  * digital/analog interface control features are not supported by the
855  * device/driver. However the device still supports analog, digital or
856  * both inputs/outputs (depending on the device). See the OSS Programmer's
857  * Guide for full details.
858  */
859 #	define PCM_CAP_SPECIAL		0x01000000	/* Not for ordinary "multimedia" use */
860 #	define PCM_CAP_SHADOW		0x00000000	/* OBSOLETE */
861 
862 /*
863  * Preferred channel usage. These bits can be used to
864  * give recommendations to the application. Used by few drivers.
865  * For example if ((caps & DSP_CH_MASK) == DSP_CH_MONO) means that
866  * the device works best in mono mode. However it doesn't necessarily mean
867  * that the device cannot be used in stereo. These bits should only be used
868  * by special applications such as multi track hard disk recorders to find
869  * out the initial setup. However the user should be able to override this
870  * selection.
871  *
872  * To find out which modes are actually supported the application should
873  * try to select them using SNDCTL_DSP_CHANNELS.
874  */
875 #	define DSP_CH_MASK		0x06000000	/* Mask */
876 #	define DSP_CH_ANY		0x00000000	/* No preferred mode */
877 #	define DSP_CH_MONO		0x02000000
878 #	define DSP_CH_STEREO		0x04000000
879 #	define DSP_CH_MULTI		0x06000000	/* More than two channels */
880 
881 #	define PCM_CAP_HIDDEN		0x08000000	/* Hidden device */
882 #	define PCM_CAP_FREERATE		0x10000000
883 #	define PCM_CAP_MODEM		0x20000000	/* Modem device */
884 #	define PCM_CAP_DEFAULT		0x40000000	/* "Default" device */
885 
886 /*
887  * The PCM_CAP_* capability names were known as DSP_CAP_* prior OSS 4.0
888  * so it's necessary to define the older names too.
889  */
890 #define DSP_CAP_ADMASK		PCM_CAP_ADMASK
891 #define DSP_CAP_ANALOGIN	PCM_CAP_ANALOGIN
892 #define DSP_CAP_ANALOGOUT	PCM_CAP_ANALOGOUT
893 #define DSP_CAP_BATCH		PCM_CAP_BATCH
894 #define DSP_CAP_BIND		PCM_CAP_BIND
895 #define DSP_CAP_COPROC		PCM_CAP_COPROC
896 #define DSP_CAP_DEFAULT		PCM_CAP_DEFAULT
897 #define DSP_CAP_DIGITALIN	PCM_CAP_DIGITALIN
898 #define DSP_CAP_DIGITALOUT	PCM_CAP_DIGITALOUT
899 #define DSP_CAP_DUPLEX		PCM_CAP_DUPLEX
900 #define DSP_CAP_FREERATE	PCM_CAP_FREERATE
901 #define DSP_CAP_HIDDEN		PCM_CAP_HIDDEN
902 #define DSP_CAP_INPUT		PCM_CAP_INPUT
903 #define DSP_CAP_MMAP		PCM_CAP_MMAP
904 #define DSP_CAP_MODEM		PCM_CAP_MODEM
905 #define DSP_CAP_MULTI		PCM_CAP_MULTI
906 #define DSP_CAP_OUTPUT		PCM_CAP_OUTPUT
907 #define DSP_CAP_REALTIME	PCM_CAP_REALTIME
908 #define DSP_CAP_REVISION	PCM_CAP_REVISION
909 #define DSP_CAP_SHADOW		PCM_CAP_SHADOW
910 #define DSP_CAP_TRIGGER		PCM_CAP_TRIGGER
911 #define DSP_CAP_VIRTUAL		PCM_CAP_VIRTUAL
912 
913 /*
914  * What do these function do ?
915  */
916 #define SNDCTL_DSP_GETTRIGGER	_IOR ('P',16, int)
917 #define SNDCTL_DSP_SETTRIGGER	_IOW ('P',16, int)
918 #define PCM_ENABLE_INPUT	0x00000001
919 #define PCM_ENABLE_OUTPUT	0x00000002
920 
921 typedef struct count_info {
922 	int bytes;	/* Total # of bytes processed */
923 	int blocks;	/* # of fragment transitions since last time */
924 	int ptr;	/* Current DMA pointer value */
925 } count_info;
926 
927 /*
928  * GETIPTR and GETISPACE are not that different... same for out.
929  */
930 #define SNDCTL_DSP_GETIPTR	_IOR ('P',17, count_info)
931 #define SNDCTL_DSP_GETOPTR	_IOR ('P',18, count_info)
932 
933 typedef struct buffmem_desc {
934 	caddr_t buffer;
935 	int size;
936 } buffmem_desc;
937 
938 #define SNDCTL_DSP_MAPINBUF	_IOR ('P', 19, buffmem_desc)
939 #define SNDCTL_DSP_MAPOUTBUF	_IOR ('P', 20, buffmem_desc)
940 #define SNDCTL_DSP_SETSYNCRO	_IO  ('P', 21)
941 #define SNDCTL_DSP_SETDUPLEX	_IO  ('P', 22)
942 #define SNDCTL_DSP_GETODELAY	_IOR ('P', 23, int)
943 
944 /*
945  * I guess these are the readonly version of the same
946  * functions that exist above as SNDCTL_DSP_...
947  */
948 #define SOUND_PCM_READ_RATE	_IOR ('P', 2, int)
949 #define SOUND_PCM_READ_CHANNELS	_IOR ('P', 6, int)
950 #define SOUND_PCM_READ_BITS	_IOR ('P', 5, int)
951 #define SOUND_PCM_READ_FILTER	_IOR ('P', 7, int)
952 
953 /*
954  * ioctl calls to be used in communication with coprocessors and
955  * DSP chips.
956  */
957 
958 typedef struct copr_buffer {
959 	int command;	/* Set to 0 if not used */
960 	int flags;
961 #define CPF_NONE		0x0000
962 #define CPF_FIRST		0x0001	/* First block */
963 #define CPF_LAST		0x0002	/* Last block */
964 	int len;
965 	int offs;	/* If required by the device (0 if not used) */
966 
967 	u_char data[4000]; /* NOTE! 4000 is not 4k */
968 } copr_buffer;
969 
970 typedef struct copr_debug_buf {
971 	int command;	/* Used internally. Set to 0 */
972 	int parm1;
973 	int parm2;
974 	int flags;
975 	int len;	/* Length of data in bytes */
976 } copr_debug_buf;
977 
978 typedef struct copr_msg {
979 	int len;
980 	u_char data[4000];
981 } copr_msg;
982 
983 #define SNDCTL_COPR_RESET       _IO  ('C',  0)
984 #define SNDCTL_COPR_LOAD	_IOWR('C',  1, copr_buffer)
985 #define SNDCTL_COPR_RDATA	_IOWR('C',  2, copr_debug_buf)
986 #define SNDCTL_COPR_RCODE	_IOWR('C',  3, copr_debug_buf)
987 #define SNDCTL_COPR_WDATA	_IOW ('C',  4, copr_debug_buf)
988 #define SNDCTL_COPR_WCODE	_IOW ('C',  5, copr_debug_buf)
989 #define SNDCTL_COPR_RUN		_IOWR('C',  6, copr_debug_buf)
990 #define SNDCTL_COPR_HALT	_IOWR('C',  7, copr_debug_buf)
991 #define SNDCTL_COPR_SENDMSG	_IOW ('C',  8, copr_msg)
992 #define SNDCTL_COPR_RCVMSG	_IOR ('C',  9, copr_msg)
993 
994 /*
995  * IOCTL commands for /dev/mixer
996  */
997 
998 /*
999  * Mixer devices
1000  *
1001  * There can be up to 20 different analog mixer channels. The
1002  * SOUND_MIXER_NRDEVICES gives the currently supported maximum.
1003  * The SOUND_MIXER_READ_DEVMASK returns a bitmask which tells
1004  * the devices supported by the particular mixer.
1005  */
1006 
1007 #define SOUND_MIXER_NRDEVICES	25
1008 #define SOUND_MIXER_VOLUME	0	/* Master output level */
1009 #define SOUND_MIXER_BASS	1	/* Treble level of all output channels */
1010 #define SOUND_MIXER_TREBLE	2	/* Bass level of all output channels */
1011 #define SOUND_MIXER_SYNTH	3	/* Volume of synthesier input */
1012 #define SOUND_MIXER_PCM		4	/* Output level for the audio device */
1013 #define SOUND_MIXER_SPEAKER	5	/* Output level for the PC speaker
1014 					 * signals */
1015 #define SOUND_MIXER_LINE	6	/* Volume level for the line in jack */
1016 #define SOUND_MIXER_MIC		7	/* Volume for the signal coming from
1017 					 * the microphone jack */
1018 #define SOUND_MIXER_CD		8	/* Volume level for the input signal
1019 					 * connected to the CD audio input */
1020 #define SOUND_MIXER_IMIX	9	/* Recording monitor. It controls the
1021 					 * output volume of the selected
1022 					 * recording sources while recording */
1023 #define SOUND_MIXER_ALTPCM	10	/* Volume of the alternative codec
1024 					 * device */
1025 #define SOUND_MIXER_RECLEV	11	/* Global recording level */
1026 #define SOUND_MIXER_IGAIN	12	/* Input gain */
1027 #define SOUND_MIXER_OGAIN	13	/* Output gain */
1028 /*
1029  * The AD1848 codec and compatibles have three line level inputs
1030  * (line, aux1 and aux2). Since each card manufacturer have assigned
1031  * different meanings to these inputs, it's inpractical to assign
1032  * specific meanings (line, cd, synth etc.) to them.
1033  */
1034 #define SOUND_MIXER_LINE1	14	/* Input source 1  (aux1) */
1035 #define SOUND_MIXER_LINE2	15	/* Input source 2  (aux2) */
1036 #define SOUND_MIXER_LINE3	16	/* Input source 3  (line) */
1037 #define SOUND_MIXER_DIGITAL1    17      /* Digital (input) 1 */
1038 #define SOUND_MIXER_DIGITAL2    18      /* Digital (input) 2 */
1039 #define SOUND_MIXER_DIGITAL3    19      /* Digital (input) 3 */
1040 #define SOUND_MIXER_PHONEIN     20      /* Phone input */
1041 #define SOUND_MIXER_PHONEOUT    21      /* Phone output */
1042 #define SOUND_MIXER_VIDEO       22      /* Video/TV (audio) in */
1043 #define SOUND_MIXER_RADIO       23      /* Radio in */
1044 #define SOUND_MIXER_MONITOR     24      /* Monitor (usually mic) volume */
1045 
1046 /*
1047  * Some on/off settings (SOUND_SPECIAL_MIN - SOUND_SPECIAL_MAX)
1048  * Not counted to SOUND_MIXER_NRDEVICES, but use the same number space
1049  */
1050 #define SOUND_ONOFF_MIN		28
1051 #define SOUND_ONOFF_MAX		30
1052 #define SOUND_MIXER_MUTE	28	/* 0 or 1 */
1053 #define SOUND_MIXER_ENHANCE	29	/* Enhanced stereo (0, 40, 60 or 80) */
1054 #define SOUND_MIXER_LOUD	30	/* 0 or 1 */
1055 
1056 /* Note!	Number 31 cannot be used since the sign bit is reserved */
1057 #define SOUND_MIXER_NONE        31
1058 
1059 #define SOUND_DEVICE_LABELS	{ \
1060 	"Vol  ", "Bass ", "Trebl", "Synth", "Pcm  ", "Spkr ", "Line ", \
1061 	"Mic  ", "CD   ", "Mix  ", "Pcm2 ", "Rec  ", "IGain", "OGain", \
1062 	"Line1", "Line2", "Line3", "Digital1", "Digital2", "Digital3", \
1063 	"PhoneIn", "PhoneOut", "Video", "Radio", "Monitor"}
1064 
1065 #define SOUND_DEVICE_NAMES	{ \
1066 	"vol", "bass", "treble", "synth", "pcm", "speaker", "line", \
1067 	"mic", "cd", "mix", "pcm2", "rec", "igain", "ogain", \
1068 	"line1", "line2", "line3", "dig1", "dig2", "dig3", \
1069 	"phin", "phout", "video", "radio", "monitor"}
1070 
1071 /*	Device bitmask identifiers	*/
1072 
1073 #define SOUND_MIXER_RECSRC	0xff	/* 1 bit per recording source */
1074 #define SOUND_MIXER_DEVMASK	0xfe	/* 1 bit per supported device */
1075 #define SOUND_MIXER_RECMASK	0xfd	/* 1 bit per supp. recording source */
1076 #define SOUND_MIXER_CAPS	0xfc
1077 #define SOUND_CAP_EXCL_INPUT	0x00000001	/* Only 1 rec. src at a time */
1078 #define SOUND_MIXER_STEREODEVS	0xfb	/* Mixer channels supporting stereo */
1079 
1080 /*	Device mask bits	*/
1081 
1082 #define SOUND_MASK_VOLUME	(1 << SOUND_MIXER_VOLUME)
1083 #define SOUND_MASK_BASS		(1 << SOUND_MIXER_BASS)
1084 #define SOUND_MASK_TREBLE	(1 << SOUND_MIXER_TREBLE)
1085 #define SOUND_MASK_SYNTH	(1 << SOUND_MIXER_SYNTH)
1086 #define SOUND_MASK_PCM		(1 << SOUND_MIXER_PCM)
1087 #define SOUND_MASK_SPEAKER	(1 << SOUND_MIXER_SPEAKER)
1088 #define SOUND_MASK_LINE		(1 << SOUND_MIXER_LINE)
1089 #define SOUND_MASK_MIC		(1 << SOUND_MIXER_MIC)
1090 #define SOUND_MASK_CD		(1 << SOUND_MIXER_CD)
1091 #define SOUND_MASK_IMIX		(1 << SOUND_MIXER_IMIX)
1092 #define SOUND_MASK_ALTPCM	(1 << SOUND_MIXER_ALTPCM)
1093 #define SOUND_MASK_RECLEV	(1 << SOUND_MIXER_RECLEV)
1094 #define SOUND_MASK_IGAIN	(1 << SOUND_MIXER_IGAIN)
1095 #define SOUND_MASK_OGAIN	(1 << SOUND_MIXER_OGAIN)
1096 #define SOUND_MASK_LINE1	(1 << SOUND_MIXER_LINE1)
1097 #define SOUND_MASK_LINE2	(1 << SOUND_MIXER_LINE2)
1098 #define SOUND_MASK_LINE3	(1 << SOUND_MIXER_LINE3)
1099 #define SOUND_MASK_DIGITAL1     (1 << SOUND_MIXER_DIGITAL1)
1100 #define SOUND_MASK_DIGITAL2     (1 << SOUND_MIXER_DIGITAL2)
1101 #define SOUND_MASK_DIGITAL3     (1 << SOUND_MIXER_DIGITAL3)
1102 #define SOUND_MASK_PHONEIN      (1 << SOUND_MIXER_PHONEIN)
1103 #define SOUND_MASK_PHONEOUT     (1 << SOUND_MIXER_PHONEOUT)
1104 #define SOUND_MASK_RADIO        (1 << SOUND_MIXER_RADIO)
1105 #define SOUND_MASK_VIDEO        (1 << SOUND_MIXER_VIDEO)
1106 #define SOUND_MASK_MONITOR      (1 << SOUND_MIXER_MONITOR)
1107 
1108 /* Obsolete macros */
1109 #define SOUND_MASK_MUTE		(1 << SOUND_MIXER_MUTE)
1110 #define SOUND_MASK_ENHANCE	(1 << SOUND_MIXER_ENHANCE)
1111 #define SOUND_MASK_LOUD		(1 << SOUND_MIXER_LOUD)
1112 
1113 #define MIXER_READ(dev)		_IOR('M', dev, int)
1114 #define SOUND_MIXER_READ_VOLUME		MIXER_READ(SOUND_MIXER_VOLUME)
1115 #define SOUND_MIXER_READ_BASS		MIXER_READ(SOUND_MIXER_BASS)
1116 #define SOUND_MIXER_READ_TREBLE		MIXER_READ(SOUND_MIXER_TREBLE)
1117 #define SOUND_MIXER_READ_SYNTH		MIXER_READ(SOUND_MIXER_SYNTH)
1118 #define SOUND_MIXER_READ_PCM		MIXER_READ(SOUND_MIXER_PCM)
1119 #define SOUND_MIXER_READ_SPEAKER	MIXER_READ(SOUND_MIXER_SPEAKER)
1120 #define SOUND_MIXER_READ_LINE		MIXER_READ(SOUND_MIXER_LINE)
1121 #define SOUND_MIXER_READ_MIC		MIXER_READ(SOUND_MIXER_MIC)
1122 #define SOUND_MIXER_READ_CD		MIXER_READ(SOUND_MIXER_CD)
1123 #define SOUND_MIXER_READ_IMIX		MIXER_READ(SOUND_MIXER_IMIX)
1124 #define SOUND_MIXER_READ_ALTPCM		MIXER_READ(SOUND_MIXER_ALTPCM)
1125 #define SOUND_MIXER_READ_RECLEV		MIXER_READ(SOUND_MIXER_RECLEV)
1126 #define SOUND_MIXER_READ_IGAIN		MIXER_READ(SOUND_MIXER_IGAIN)
1127 #define SOUND_MIXER_READ_OGAIN		MIXER_READ(SOUND_MIXER_OGAIN)
1128 #define SOUND_MIXER_READ_LINE1		MIXER_READ(SOUND_MIXER_LINE1)
1129 #define SOUND_MIXER_READ_LINE2		MIXER_READ(SOUND_MIXER_LINE2)
1130 #define SOUND_MIXER_READ_LINE3		MIXER_READ(SOUND_MIXER_LINE3)
1131 #define SOUND_MIXER_READ_DIGITAL1	MIXER_READ(SOUND_MIXER_DIGITAL1)
1132 #define SOUND_MIXER_READ_DIGITAL2	MIXER_READ(SOUND_MIXER_DIGITAL2)
1133 #define SOUND_MIXER_READ_DIGITAL3	MIXER_READ(SOUND_MIXER_DIGITAL3)
1134 #define SOUND_MIXER_READ_PHONEIN      	MIXER_READ(SOUND_MIXER_PHONEIN)
1135 #define SOUND_MIXER_READ_PHONEOUT	MIXER_READ(SOUND_MIXER_PHONEOUT)
1136 #define SOUND_MIXER_READ_RADIO		MIXER_READ(SOUND_MIXER_RADIO)
1137 #define SOUND_MIXER_READ_VIDEO		MIXER_READ(SOUND_MIXER_VIDEO)
1138 #define SOUND_MIXER_READ_MONITOR	MIXER_READ(SOUND_MIXER_MONITOR)
1139 
1140 /* Obsolete macros */
1141 #define SOUND_MIXER_READ_MUTE		MIXER_READ(SOUND_MIXER_MUTE)
1142 #define SOUND_MIXER_READ_ENHANCE	MIXER_READ(SOUND_MIXER_ENHANCE)
1143 #define SOUND_MIXER_READ_LOUD		MIXER_READ(SOUND_MIXER_LOUD)
1144 
1145 #define SOUND_MIXER_READ_RECSRC		MIXER_READ(SOUND_MIXER_RECSRC)
1146 #define SOUND_MIXER_READ_DEVMASK	MIXER_READ(SOUND_MIXER_DEVMASK)
1147 #define SOUND_MIXER_READ_RECMASK	MIXER_READ(SOUND_MIXER_RECMASK)
1148 #define SOUND_MIXER_READ_STEREODEVS	MIXER_READ(SOUND_MIXER_STEREODEVS)
1149 #define SOUND_MIXER_READ_CAPS		MIXER_READ(SOUND_MIXER_CAPS)
1150 
1151 #define MIXER_WRITE(dev)		_IOWR('M', dev, int)
1152 #define SOUND_MIXER_WRITE_VOLUME	MIXER_WRITE(SOUND_MIXER_VOLUME)
1153 #define SOUND_MIXER_WRITE_BASS		MIXER_WRITE(SOUND_MIXER_BASS)
1154 #define SOUND_MIXER_WRITE_TREBLE	MIXER_WRITE(SOUND_MIXER_TREBLE)
1155 #define SOUND_MIXER_WRITE_SYNTH		MIXER_WRITE(SOUND_MIXER_SYNTH)
1156 #define SOUND_MIXER_WRITE_PCM		MIXER_WRITE(SOUND_MIXER_PCM)
1157 #define SOUND_MIXER_WRITE_SPEAKER	MIXER_WRITE(SOUND_MIXER_SPEAKER)
1158 #define SOUND_MIXER_WRITE_LINE		MIXER_WRITE(SOUND_MIXER_LINE)
1159 #define SOUND_MIXER_WRITE_MIC		MIXER_WRITE(SOUND_MIXER_MIC)
1160 #define SOUND_MIXER_WRITE_CD		MIXER_WRITE(SOUND_MIXER_CD)
1161 #define SOUND_MIXER_WRITE_IMIX		MIXER_WRITE(SOUND_MIXER_IMIX)
1162 #define SOUND_MIXER_WRITE_ALTPCM	MIXER_WRITE(SOUND_MIXER_ALTPCM)
1163 #define SOUND_MIXER_WRITE_RECLEV	MIXER_WRITE(SOUND_MIXER_RECLEV)
1164 #define SOUND_MIXER_WRITE_IGAIN		MIXER_WRITE(SOUND_MIXER_IGAIN)
1165 #define SOUND_MIXER_WRITE_OGAIN		MIXER_WRITE(SOUND_MIXER_OGAIN)
1166 #define SOUND_MIXER_WRITE_LINE1		MIXER_WRITE(SOUND_MIXER_LINE1)
1167 #define SOUND_MIXER_WRITE_LINE2		MIXER_WRITE(SOUND_MIXER_LINE2)
1168 #define SOUND_MIXER_WRITE_LINE3		MIXER_WRITE(SOUND_MIXER_LINE3)
1169 #define SOUND_MIXER_WRITE_DIGITAL1	MIXER_WRITE(SOUND_MIXER_DIGITAL1)
1170 #define SOUND_MIXER_WRITE_DIGITAL2	MIXER_WRITE(SOUND_MIXER_DIGITAL2)
1171 #define SOUND_MIXER_WRITE_DIGITAL3	MIXER_WRITE(SOUND_MIXER_DIGITAL3)
1172 #define SOUND_MIXER_WRITE_PHONEIN      	MIXER_WRITE(SOUND_MIXER_PHONEIN)
1173 #define SOUND_MIXER_WRITE_PHONEOUT	MIXER_WRITE(SOUND_MIXER_PHONEOUT)
1174 #define SOUND_MIXER_WRITE_RADIO		MIXER_WRITE(SOUND_MIXER_RADIO)
1175 #define SOUND_MIXER_WRITE_VIDEO		MIXER_WRITE(SOUND_MIXER_VIDEO)
1176 #define SOUND_MIXER_WRITE_MONITOR	MIXER_WRITE(SOUND_MIXER_MONITOR)
1177 
1178 #define SOUND_MIXER_WRITE_MUTE		MIXER_WRITE(SOUND_MIXER_MUTE)
1179 #define SOUND_MIXER_WRITE_ENHANCE	MIXER_WRITE(SOUND_MIXER_ENHANCE)
1180 #define SOUND_MIXER_WRITE_LOUD		MIXER_WRITE(SOUND_MIXER_LOUD)
1181 
1182 #define SOUND_MIXER_WRITE_RECSRC	MIXER_WRITE(SOUND_MIXER_RECSRC)
1183 
1184 typedef struct mixer_info {
1185   char id[16];
1186   char name[32];
1187   int  modify_counter;
1188   int fillers[10];
1189 } mixer_info;
1190 
1191 #define SOUND_MIXER_INFO		_IOR('M', 101, mixer_info)
1192 
1193 #define LEFT_CHN	0
1194 #define RIGHT_CHN	1
1195 
1196 /*
1197  * Level 2 event types for /dev/sequencer
1198  */
1199 
1200 /*
1201  * The 4 most significant bits of byte 0 specify the class of
1202  * the event:
1203  *
1204  *	0x8X = system level events,
1205  *	0x9X = device/port specific events, event[1] = device/port,
1206  *		The last 4 bits give the subtype:
1207  *			0x02	= Channel event (event[3] = chn).
1208  *			0x01	= note event (event[4] = note).
1209  *			(0x01 is not used alone but always with bit 0x02).
1210  *	       event[2] = MIDI message code (0x80=note off etc.)
1211  *
1212  */
1213 
1214 #define EV_SEQ_LOCAL		0x80
1215 #define EV_TIMING		0x81
1216 #define EV_CHN_COMMON		0x92
1217 #define EV_CHN_VOICE		0x93
1218 #define EV_SYSEX		0x94
1219 /*
1220  * Event types 200 to 220 are reserved for application use.
1221  * These numbers will not be used by the driver.
1222  */
1223 
1224 /*
1225  * Events for event type EV_CHN_VOICE
1226  */
1227 
1228 #define MIDI_NOTEOFF		0x80
1229 #define MIDI_NOTEON		0x90
1230 #define MIDI_KEY_PRESSURE	0xA0
1231 
1232 /*
1233  * Events for event type EV_CHN_COMMON
1234  */
1235 
1236 #define MIDI_CTL_CHANGE		0xB0
1237 #define MIDI_PGM_CHANGE		0xC0
1238 #define MIDI_CHN_PRESSURE	0xD0
1239 #define MIDI_PITCH_BEND		0xE0
1240 
1241 #define MIDI_SYSTEM_PREFIX	0xF0
1242 
1243 /*
1244  * Timer event types
1245  */
1246 #define TMR_WAIT_REL		1	/* Time relative to the prev time */
1247 #define TMR_WAIT_ABS		2	/* Absolute time since TMR_START */
1248 #define TMR_STOP		3
1249 #define TMR_START		4
1250 #define TMR_CONTINUE		5
1251 #define TMR_TEMPO		6
1252 #define TMR_ECHO		8
1253 #define TMR_CLOCK		9	/* MIDI clock */
1254 #define TMR_SPP			10	/* Song position pointer */
1255 #define TMR_TIMESIG		11	/* Time signature */
1256 
1257 /*
1258  *	Local event types
1259  */
1260 #define LOCL_STARTAUDIO		1
1261 
1262 #if !defined(_KERNEL) || defined(USE_SEQ_MACROS)
1263 /*
1264  *	Some convenience macros to simplify programming of the
1265  *	/dev/sequencer interface
1266  *
1267  *	These macros define the API which should be used when possible.
1268  */
1269 
1270 #ifndef USE_SIMPLE_MACROS
1271 void seqbuf_dump(void);	/* This function must be provided by programs */
1272 
1273 /* Sample seqbuf_dump() implementation:
1274  *
1275  *	SEQ_DEFINEBUF (2048);	-- Defines a buffer for 2048 bytes
1276  *
1277  *	int seqfd;		-- The file descriptor for /dev/sequencer.
1278  *
1279  *	void
1280  *	seqbuf_dump ()
1281  *	{
1282  *	  if (_seqbufptr)
1283  *	    if (write (seqfd, _seqbuf, _seqbufptr) == -1)
1284  *	      {
1285  *		perror ("write /dev/sequencer");
1286  *		exit (-1);
1287  *	      }
1288  *	  _seqbufptr = 0;
1289  *	}
1290  */
1291 
1292 #define SEQ_DEFINEBUF(len)		\
1293 	u_char _seqbuf[len]; int _seqbuflen = len;int _seqbufptr = 0
1294 #define SEQ_USE_EXTBUF()		\
1295 	extern u_char _seqbuf[]; \
1296 	extern int _seqbuflen;extern int _seqbufptr
1297 #define SEQ_DECLAREBUF()		SEQ_USE_EXTBUF()
1298 #define SEQ_PM_DEFINES			struct patmgr_info _pm_info
1299 #define _SEQ_NEEDBUF(len)		\
1300 	if ((_seqbufptr+(len)) > _seqbuflen) \
1301 		seqbuf_dump()
1302 #define _SEQ_ADVBUF(len)		_seqbufptr += len
1303 #define SEQ_DUMPBUF			seqbuf_dump
1304 #else
1305 /*
1306  * This variation of the sequencer macros is used just to format one event
1307  * using fixed buffer.
1308  *
1309  * The program using the macro library must define the following macros before
1310  * using this library.
1311  *
1312  * #define _seqbuf 		 name of the buffer (u_char[])
1313  * #define _SEQ_ADVBUF(len)	 If the applic needs to know the exact
1314  *				 size of the event, this macro can be used.
1315  *				 Otherwise this must be defined as empty.
1316  * #define _seqbufptr		 Define the name of index variable or 0 if
1317  *				 not required.
1318  */
1319 #define _SEQ_NEEDBUF(len)	/* empty */
1320 #endif
1321 
1322 #define PM_LOAD_PATCH(dev, bank, pgm)	\
1323 	(SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
1324 	_pm_info.device=dev, _pm_info.data.data8[0]=pgm, \
1325 	_pm_info.parm1 = bank, _pm_info.parm2 = 1, \
1326 	ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
1327 #define PM_LOAD_PATCHES(dev, bank, pgm) \
1328 	(SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
1329 	_pm_info.device=dev, bcopy( pgm, _pm_info.data.data8,  128), \
1330 	_pm_info.parm1 = bank, _pm_info.parm2 = 128, \
1331 	ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
1332 
1333 #define SEQ_VOLUME_MODE(dev, mode)	{ \
1334 	_SEQ_NEEDBUF(8);\
1335 	_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
1336 	_seqbuf[_seqbufptr+1] = SEQ_VOLMODE;\
1337 	_seqbuf[_seqbufptr+2] = (dev);\
1338 	_seqbuf[_seqbufptr+3] = (mode);\
1339 	_seqbuf[_seqbufptr+4] = 0;\
1340 	_seqbuf[_seqbufptr+5] = 0;\
1341 	_seqbuf[_seqbufptr+6] = 0;\
1342 	_seqbuf[_seqbufptr+7] = 0;\
1343 	_SEQ_ADVBUF(8);}
1344 
1345 /*
1346  * Midi voice messages
1347  */
1348 
1349 #define _CHN_VOICE(dev, event, chn, note, parm)  { \
1350 	_SEQ_NEEDBUF(8);\
1351 	_seqbuf[_seqbufptr] = EV_CHN_VOICE;\
1352 	_seqbuf[_seqbufptr+1] = (dev);\
1353 	_seqbuf[_seqbufptr+2] = (event);\
1354 	_seqbuf[_seqbufptr+3] = (chn);\
1355 	_seqbuf[_seqbufptr+4] = (note);\
1356 	_seqbuf[_seqbufptr+5] = (parm);\
1357 	_seqbuf[_seqbufptr+6] = (0);\
1358 	_seqbuf[_seqbufptr+7] = 0;\
1359 	_SEQ_ADVBUF(8);}
1360 
1361 #define SEQ_START_NOTE(dev, chn, note, vol) \
1362 		_CHN_VOICE(dev, MIDI_NOTEON, chn, note, vol)
1363 
1364 #define SEQ_STOP_NOTE(dev, chn, note, vol) \
1365 		_CHN_VOICE(dev, MIDI_NOTEOFF, chn, note, vol)
1366 
1367 #define SEQ_KEY_PRESSURE(dev, chn, note, pressure) \
1368 		_CHN_VOICE(dev, MIDI_KEY_PRESSURE, chn, note, pressure)
1369 
1370 /*
1371  * Midi channel messages
1372  */
1373 
1374 #define _CHN_COMMON(dev, event, chn, p1, p2, w14) { \
1375 	_SEQ_NEEDBUF(8);\
1376 	_seqbuf[_seqbufptr] = EV_CHN_COMMON;\
1377 	_seqbuf[_seqbufptr+1] = (dev);\
1378 	_seqbuf[_seqbufptr+2] = (event);\
1379 	_seqbuf[_seqbufptr+3] = (chn);\
1380 	_seqbuf[_seqbufptr+4] = (p1);\
1381 	_seqbuf[_seqbufptr+5] = (p2);\
1382 	*(short *)&_seqbuf[_seqbufptr+6] = (w14);\
1383 	_SEQ_ADVBUF(8);}
1384 /*
1385  * SEQ_SYSEX permits sending of sysex messages. (It may look that it permits
1386  * sending any MIDI bytes but it's absolutely not possible. Trying to do
1387  * so _will_ cause problems with MPU401 intelligent mode).
1388  *
1389  * Sysex messages are sent in blocks of 1 to 6 bytes. Longer messages must be
1390  * sent by calling SEQ_SYSEX() several times (there must be no other events
1391  * between them). First sysex fragment must have 0xf0 in the first byte
1392  * and the last byte (buf[len-1] of the last fragment must be 0xf7. No byte
1393  * between these sysex start and end markers cannot be larger than 0x7f. Also
1394  * lengths of each fragments (except the last one) must be 6.
1395  *
1396  * Breaking the above rules may work with some MIDI ports but is likely to
1397  * cause fatal problems with some other devices (such as MPU401).
1398  */
1399 #define SEQ_SYSEX(dev, buf, len) { \
1400 	int i, l=(len); if (l>6)l=6;\
1401 	_SEQ_NEEDBUF(8);\
1402 	_seqbuf[_seqbufptr] = EV_SYSEX;\
1403 	_seqbuf[_seqbufptr+1] = (dev);\
1404 	for(i=0;i<l;i++)_seqbuf[_seqbufptr+i+2] = (buf)[i];\
1405 	for(i=l;i<6;i++)_seqbuf[_seqbufptr+i+2] = 0xff;\
1406 	_SEQ_ADVBUF(8);}
1407 
1408 #define SEQ_CHN_PRESSURE(dev, chn, pressure) \
1409 	_CHN_COMMON(dev, MIDI_CHN_PRESSURE, chn, pressure, 0, 0)
1410 
1411 #define SEQ_SET_PATCH(dev, chn, patch) \
1412 	_CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0)
1413 
1414 #define SEQ_CONTROL(dev, chn, controller, value) \
1415 	_CHN_COMMON(dev, MIDI_CTL_CHANGE, chn, controller, 0, value)
1416 
1417 #define SEQ_BENDER(dev, chn, value) \
1418 	_CHN_COMMON(dev, MIDI_PITCH_BEND, chn, 0, 0, value)
1419 
1420 #define SEQ_V2_X_CONTROL(dev, voice, controller, value)	{ \
1421 	_SEQ_NEEDBUF(8);\
1422 	_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
1423 	_seqbuf[_seqbufptr+1] = SEQ_CONTROLLER;\
1424 	_seqbuf[_seqbufptr+2] = (dev);\
1425 	_seqbuf[_seqbufptr+3] = (voice);\
1426 	_seqbuf[_seqbufptr+4] = (controller);\
1427 	*(short *)&_seqbuf[_seqbufptr+5] = (value);\
1428 	_seqbuf[_seqbufptr+7] = 0;\
1429 	_SEQ_ADVBUF(8);}
1430 
1431 /*
1432  * The following 5 macros are incorrectly implemented and obsolete.
1433  * Use SEQ_BENDER and SEQ_CONTROL (with proper controller) instead.
1434  */
1435 
1436 #define SEQ_PITCHBEND(dev, voice, value) \
1437 	SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER, value)
1438 #define SEQ_BENDER_RANGE(dev, voice, value) \
1439 	SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER_RANGE, value)
1440 #define SEQ_EXPRESSION(dev, voice, value) \
1441 	SEQ_CONTROL(dev, voice, CTL_EXPRESSION, value*128)
1442 #define SEQ_MAIN_VOLUME(dev, voice, value) \
1443 	SEQ_CONTROL(dev, voice, CTL_MAIN_VOLUME, (value*16383)/100)
1444 #define SEQ_PANNING(dev, voice, pos) \
1445 	SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2)
1446 
1447 /*
1448  * Timing and synchronization macros
1449  */
1450 
1451 #define _TIMER_EVENT(ev, parm)		{ \
1452 	_SEQ_NEEDBUF(8);\
1453 	_seqbuf[_seqbufptr+0] = EV_TIMING; \
1454 	_seqbuf[_seqbufptr+1] = (ev); \
1455 	_seqbuf[_seqbufptr+2] = 0;\
1456 	_seqbuf[_seqbufptr+3] = 0;\
1457 	*(u_int *)&_seqbuf[_seqbufptr+4] = (parm); \
1458 	_SEQ_ADVBUF(8); \
1459 	}
1460 
1461 #define SEQ_START_TIMER()		_TIMER_EVENT(TMR_START, 0)
1462 #define SEQ_STOP_TIMER()		_TIMER_EVENT(TMR_STOP, 0)
1463 #define SEQ_CONTINUE_TIMER()		_TIMER_EVENT(TMR_CONTINUE, 0)
1464 #define SEQ_WAIT_TIME(ticks)		_TIMER_EVENT(TMR_WAIT_ABS, ticks)
1465 #define SEQ_DELTA_TIME(ticks)		_TIMER_EVENT(TMR_WAIT_REL, ticks)
1466 #define SEQ_ECHO_BACK(key)		_TIMER_EVENT(TMR_ECHO, key)
1467 #define SEQ_SET_TEMPO(value)		_TIMER_EVENT(TMR_TEMPO, value)
1468 #define SEQ_SONGPOS(pos)		_TIMER_EVENT(TMR_SPP, pos)
1469 #define SEQ_TIME_SIGNATURE(sig)		_TIMER_EVENT(TMR_TIMESIG, sig)
1470 
1471 /*
1472  * Local control events
1473  */
1474 
1475 #define _LOCAL_EVENT(ev, parm)		{ \
1476 	_SEQ_NEEDBUF(8);\
1477 	_seqbuf[_seqbufptr+0] = EV_SEQ_LOCAL; \
1478 	_seqbuf[_seqbufptr+1] = (ev); \
1479 	_seqbuf[_seqbufptr+2] = 0;\
1480 	_seqbuf[_seqbufptr+3] = 0;\
1481 	*(u_int *)&_seqbuf[_seqbufptr+4] = (parm); \
1482 	_SEQ_ADVBUF(8); \
1483 	}
1484 
1485 #define SEQ_PLAYAUDIO(devmask)		_LOCAL_EVENT(LOCL_STARTAUDIO, devmask)
1486 /*
1487  * Events for the level 1 interface only
1488  */
1489 
1490 #define SEQ_MIDIOUT(device, byte)	{ \
1491 	_SEQ_NEEDBUF(4);\
1492 	_seqbuf[_seqbufptr] = SEQ_MIDIPUTC;\
1493 	_seqbuf[_seqbufptr+1] = (byte);\
1494 	_seqbuf[_seqbufptr+2] = (device);\
1495 	_seqbuf[_seqbufptr+3] = 0;\
1496 	_SEQ_ADVBUF(4);}
1497 
1498 /*
1499  * Patch loading.
1500  */
1501 #define SEQ_WRPATCH(patchx, len)	{ \
1502 	if (_seqbufptr) seqbuf_dump(); \
1503 	if (write(seqfd, (char*)(patchx), len)==-1) \
1504 	   perror("Write patch: /dev/sequencer"); \
1505 	}
1506 
1507 #define SEQ_WRPATCH2(patchx, len)	\
1508 	( seqbuf_dump(), write(seqfd, (char*)(patchx), len) )
1509 
1510 #endif
1511 
1512 /*
1513  * Here I have moved all the aliases for ioctl names.
1514  */
1515 
1516 #define SNDCTL_DSP_SAMPLESIZE	SNDCTL_DSP_SETFMT
1517 #define SOUND_PCM_WRITE_BITS	SNDCTL_DSP_SETFMT
1518 #define SOUND_PCM_SETFMT	SNDCTL_DSP_SETFMT
1519 
1520 #define SOUND_PCM_WRITE_RATE	SNDCTL_DSP_SPEED
1521 #define SOUND_PCM_POST		SNDCTL_DSP_POST
1522 #define SOUND_PCM_RESET		SNDCTL_DSP_RESET
1523 #define SOUND_PCM_SYNC		SNDCTL_DSP_SYNC
1524 #define SOUND_PCM_SUBDIVIDE	SNDCTL_DSP_SUBDIVIDE
1525 #define SOUND_PCM_SETFRAGMENT	SNDCTL_DSP_SETFRAGMENT
1526 #define SOUND_PCM_GETFMTS	SNDCTL_DSP_GETFMTS
1527 #define SOUND_PCM_GETOSPACE	SNDCTL_DSP_GETOSPACE
1528 #define SOUND_PCM_GETISPACE	SNDCTL_DSP_GETISPACE
1529 #define SOUND_PCM_NONBLOCK	SNDCTL_DSP_NONBLOCK
1530 #define SOUND_PCM_GETCAPS	SNDCTL_DSP_GETCAPS
1531 #define SOUND_PCM_GETTRIGGER	SNDCTL_DSP_GETTRIGGER
1532 #define SOUND_PCM_SETTRIGGER	SNDCTL_DSP_SETTRIGGER
1533 #define SOUND_PCM_SETSYNCRO	SNDCTL_DSP_SETSYNCRO
1534 #define SOUND_PCM_GETIPTR	SNDCTL_DSP_GETIPTR
1535 #define SOUND_PCM_GETOPTR	SNDCTL_DSP_GETOPTR
1536 #define SOUND_PCM_MAPINBUF	SNDCTL_DSP_MAPINBUF
1537 #define SOUND_PCM_MAPOUTBUF	SNDCTL_DSP_MAPOUTBUF
1538 
1539 /***********************************************************************/
1540 
1541 /**
1542  * XXX OSSv4 defines -- some bits taken straight out of the new
1543  * sys/soundcard.h bundled with recent OSS releases.
1544  *
1545  * NB:  These macros and structures will be reorganized and inserted
1546  * 	in appropriate places throughout this file once the code begins
1547  * 	to take shape.
1548  *
1549  * @todo reorganize layout more like the 4Front version
1550  * @todo ask about maintaining __SIOWR vs. _IOWR ioctl cmd defines
1551  */
1552 
1553 /**
1554  * @note The @c OSSV4_EXPERIMENT macro is meant to wrap new development code
1555  * in the sound system relevant to adopting 4Front's OSSv4 specification.
1556  * Users should not enable this!  Really!
1557  */
1558 #if 0
1559 # define OSSV4_EXPERIMENT 1
1560 #else
1561 # undef OSSV4_EXPERIMENT
1562 #endif
1563 
1564 #ifdef SOUND_VERSION
1565 # undef SOUND_VERSION
1566 # define SOUND_VERSION	0x040000
1567 #endif	/* !SOUND_VERSION */
1568 
1569 #define OSS_LONGNAME_SIZE	64
1570 #define OSS_LABEL_SIZE		16
1571 #define OSS_DEVNODE_SIZE        32
1572 typedef char oss_longname_t[OSS_LONGNAME_SIZE];
1573 typedef char oss_label_t[OSS_LABEL_SIZE];
1574 typedef char oss_devnode_t[OSS_DEVNODE_SIZE];
1575 
1576 typedef struct audio_errinfo
1577 {
1578 	int		play_underruns;
1579 	int		rec_overruns;
1580 	unsigned int	play_ptradjust;
1581 	unsigned int	rec_ptradjust;
1582 	int		play_errorcount;
1583 	int		rec_errorcount;
1584 	int		play_lasterror;
1585 	int		rec_lasterror;
1586 	long		play_errorparm;
1587 	long		rec_errorparm;
1588 	int		filler[16];
1589 } audio_errinfo;
1590 
1591 #define SNDCTL_DSP_GETPLAYVOL           _IOR ('P', 24, int)
1592 #define SNDCTL_DSP_SETPLAYVOL           _IOWR('P', 24, int)
1593 #define SNDCTL_DSP_GETERROR             _IOR ('P', 25, audio_errinfo)
1594 
1595 /*
1596  ****************************************************************************
1597  * Sync groups for audio devices
1598  */
1599 typedef struct oss_syncgroup
1600 {
1601   int id;
1602   int mode;
1603   int filler[16];
1604 } oss_syncgroup;
1605 
1606 #define SNDCTL_DSP_SYNCGROUP            _IOWR('P', 28, oss_syncgroup)
1607 #define SNDCTL_DSP_SYNCSTART            _IOW ('P', 29, int)
1608 
1609 /*
1610  **************************************************************************
1611  * "cooked" mode enables software based conversions for sample rate, sample
1612  * format (bits) and number of channels (mono/stereo). These conversions are
1613  * required with some devices that support only one sample rate or just stereo
1614  * to let the applications to use other formats. The cooked mode is enabled by
1615  * default. However it's necessary to disable this mode when mmap() is used or
1616  * when very deterministic timing is required. SNDCTL_DSP_COOKEDMODE is an
1617  * optional call introduced in OSS 3.9.6f. It's _error return must be ignored_
1618  * since normally this call will return erno=EINVAL.
1619  *
1620  * SNDCTL_DSP_COOKEDMODE must be called immediately after open before doing
1621  * anything else. Otherwise the call will not have any effect.
1622  */
1623 #define SNDCTL_DSP_COOKEDMODE           _IOW ('P', 30, int)
1624 
1625 /*
1626  **************************************************************************
1627  * SNDCTL_DSP_SILENCE and SNDCTL_DSP_SKIP are new calls in OSS 3.99.0
1628  * that can be used to implement pause/continue during playback (no effect
1629  * on recording).
1630  */
1631 #define SNDCTL_DSP_SILENCE              _IO  ('P', 31)
1632 #define SNDCTL_DSP_SKIP                 _IO  ('P', 32)
1633 
1634 /*
1635  ****************************************************************************
1636  * Abort transfer (reset) functions for input and output
1637  */
1638 #define SNDCTL_DSP_HALT_INPUT		_IO  ('P', 33)
1639 #define SNDCTL_DSP_RESET_INPUT	SNDCTL_DSP_HALT_INPUT	/* Old name */
1640 #define SNDCTL_DSP_HALT_OUTPUT		_IO  ('P', 34)
1641 #define SNDCTL_DSP_RESET_OUTPUT	SNDCTL_DSP_HALT_OUTPUT	/* Old name */
1642 
1643 /*
1644  ****************************************************************************
1645  * Low water level control
1646  */
1647 #define SNDCTL_DSP_LOW_WATER		_IOW ('P', 34, int)
1648 
1649 /** @todo Get rid of OSS_NO_LONG_LONG references? */
1650 
1651 /*
1652  ****************************************************************************
1653  * 64 bit pointer support. Only available in environments that support
1654  * the 64 bit (long long) integer type.
1655  */
1656 #ifndef OSS_NO_LONG_LONG
1657 typedef struct
1658 {
1659   long long samples;
1660   int fifo_samples;
1661   int filler[32];		/* For future use */
1662 } oss_count_t;
1663 
1664 #define SNDCTL_DSP_CURRENT_IPTR		_IOR ('P', 35, oss_count_t)
1665 #define SNDCTL_DSP_CURRENT_OPTR		_IOR ('P', 36, oss_count_t)
1666 #endif
1667 
1668 /*
1669  ****************************************************************************
1670  * Interface for selecting recording sources and playback output routings.
1671  */
1672 #define SNDCTL_DSP_GET_RECSRC_NAMES     _IOR ('P', 37, oss_mixer_enuminfo)
1673 #define SNDCTL_DSP_GET_RECSRC           _IOR ('P', 38, int)
1674 #define SNDCTL_DSP_SET_RECSRC           _IOWR('P', 38, int)
1675 
1676 #define SNDCTL_DSP_GET_PLAYTGT_NAMES    _IOR ('P', 39, oss_mixer_enuminfo)
1677 #define SNDCTL_DSP_GET_PLAYTGT          _IOR ('P', 40, int)
1678 #define SNDCTL_DSP_SET_PLAYTGT          _IOWR('P', 40, int)
1679 #define SNDCTL_DSP_GETRECVOL            _IOR ('P', 41, int)
1680 #define SNDCTL_DSP_SETRECVOL            _IOWR('P', 41, int)
1681 
1682 /*
1683  ***************************************************************************
1684  * Some calls for setting the channel assignment with multi channel devices
1685  * (see the manual for details).                                                 */
1686 #define SNDCTL_DSP_GET_CHNORDER         _IOR ('P', 42, unsigned long long)
1687 #define SNDCTL_DSP_SET_CHNORDER         _IOWR('P', 42, unsigned long long)
1688 #       define CHID_UNDEF       0
1689 #       define CHID_L           1
1690 #       define CHID_R           2
1691 #       define CHID_C           3
1692 #       define CHID_LFE         4
1693 #       define CHID_LS          5
1694 #       define CHID_RS          6
1695 #       define CHID_LR          7
1696 #       define CHID_RR          8
1697 #define CHNORDER_UNDEF          0x0000000000000000ULL
1698 #define CHNORDER_NORMAL         0x0000000087654321ULL
1699 
1700 #define MAX_PEAK_CHANNELS	128
1701 typedef unsigned short oss_peaks_t[MAX_PEAK_CHANNELS];
1702 #define SNDCTL_DSP_GETIPEAKS		_IOR('P', 43, oss_peaks_t)
1703 #define SNDCTL_DSP_GETOPEAKS		_IOR('P', 44, oss_peaks_t)
1704 #define SNDCTL_DSP_POLICY               _IOW('P', 45, int)    /* See the manual */
1705 
1706 /*
1707  ****************************************************************************
1708  * Few ioctl calls that are not official parts of OSS. They have been used
1709  * by few freeware implementations of OSS.
1710  */
1711 #define SNDCTL_DSP_GETCHANNELMASK	_IOWR('P', 64, int)
1712 #define SNDCTL_DSP_BIND_CHANNEL		_IOWR('P', 65, int)
1713 #define DSP_BIND_QUERY			0x00000000
1714 #define DSP_BIND_FRONT			0x00000001
1715 #define DSP_BIND_SURR			0x00000002
1716 #define DSP_BIND_CENTER_LFE		0x00000004
1717 #define DSP_BIND_HANDSET		0x00000008
1718 #define DSP_BIND_MIC			0x00000010
1719 #define DSP_BIND_MODEM1			0x00000020
1720 #define DSP_BIND_MODEM2			0x00000040
1721 #define DSP_BIND_I2S			0x00000080
1722 #define DSP_BIND_SPDIF			0x00000100
1723 #define DSP_BIND_REAR			0x00000200
1724 
1725 /*
1726  * OSS_SYSIFO is obsolete. Use SNDCTL_SYSINFO insteads.
1727  */
1728 #define OSS_GETVERSION                  _IOR ('M', 118, int)
1729 
1730 /**
1731  * @brief	Argument for SNDCTL_SYSINFO ioctl.
1732  *
1733  * For use w/ the SNDCTL_SYSINFO ioctl available on audio (/dev/dsp*),
1734  * mixer, and MIDI devices.
1735  */
1736 typedef struct oss_sysinfo
1737 {
1738 	char	product[32];	/* For example OSS/Free, OSS/Linux or
1739 				   OSS/Solaris */
1740 	char	version[32];	/* For example 4.0a */
1741 	int	versionnum;	/* See OSS_GETVERSION */
1742 	char	options[128];	/* Reserved */
1743 
1744 	int	numaudios;	/* # of audio/dsp devices */
1745 	int	openedaudio[8];	/* Bit mask telling which audio devices
1746 				   are busy */
1747 
1748 	int	numsynths;	/* # of available synth devices */
1749 	int	nummidis;	/* # of available MIDI ports */
1750 	int	numtimers;	/* # of available timer devices */
1751 	int	nummixers;	/* # of mixer devices */
1752 
1753 	int	openedmidi[8];	/* Bit mask telling which midi devices
1754 				   are busy */
1755 	int	numcards;	/* Number of sound cards in the system */
1756 	int	numaudioengines;	/* Number of audio engines in the system */
1757 	char	license[16];	/* For example "GPL" or "CDDL" */
1758 	char	revision_info[256];	/* For internal use */
1759 	int	filler[172];	/* For future expansion (set to -1) */
1760 } oss_sysinfo;
1761 
1762 typedef struct oss_mixext
1763 {
1764   int dev;			/* Mixer device number */
1765   int ctrl;			/* Controller number */
1766   int type;			/* Entry type */
1767 #	define MIXT_DEVROOT	 0	/* Device root entry */
1768 #	define MIXT_GROUP	 1	/* Controller group */
1769 #	define MIXT_ONOFF	 2	/* OFF (0) or ON (1) */
1770 #	define MIXT_ENUM	 3	/* Enumerated (0 to maxvalue) */
1771 #	define MIXT_MONOSLIDER	 4	/* Mono slider (0 to 100) */
1772 #	define MIXT_STEREOSLIDER 5	/* Stereo slider (dual 0 to 100) */
1773 #	define MIXT_MESSAGE	 6	/* (Readable) textual message */
1774 #	define MIXT_MONOVU	 7	/* VU meter value (mono) */
1775 #	define MIXT_STEREOVU	 8	/* VU meter value (stereo) */
1776 #	define MIXT_MONOPEAK	 9	/* VU meter peak value (mono) */
1777 #	define MIXT_STEREOPEAK	10	/* VU meter peak value (stereo) */
1778 #	define MIXT_RADIOGROUP	11	/* Radio button group */
1779 #	define MIXT_MARKER	12	/* Separator between normal and extension entries */
1780 #	define MIXT_VALUE	13	/* Decimal value entry */
1781 #	define MIXT_HEXVALUE	14	/* Hexadecimal value entry */
1782 #	define MIXT_MONODB	15	/* Mono atten. slider (0 to -144) */
1783 #	define MIXT_STEREODB	16	/* Stereo atten. slider (dual 0 to -144) */
1784 #	define MIXT_SLIDER	17	/* Slider (mono) with full integer range */
1785 #	define MIXT_3D		18
1786 
1787   /* Possible value range (minvalue to maxvalue) */
1788   /* Note that maxvalue may also be smaller than minvalue */
1789   int maxvalue;
1790   int minvalue;
1791 
1792   int flags;
1793 #	define MIXF_READABLE	0x00000001	/* Has readable value */
1794 #	define MIXF_WRITEABLE	0x00000002	/* Has writeable value */
1795 #	define MIXF_POLL	0x00000004	/* May change itself */
1796 #	define MIXF_HZ		0x00000008	/* Herz scale */
1797 #	define MIXF_STRING	0x00000010	/* Use dynamic extensions for value */
1798 #	define MIXF_DYNAMIC	0x00000010	/* Supports dynamic extensions */
1799 #	define MIXF_OKFAIL	0x00000020	/* Interpret value as 1=OK, 0=FAIL */
1800 #	define MIXF_FLAT	0x00000040	/* Flat vertical space requirements */
1801 #	define MIXF_LEGACY	0x00000080	/* Legacy mixer control group */
1802   char id[16];			/* Mnemonic ID (mainly for internal use) */
1803   int parent;			/* Entry# of parent (group) node (-1 if root) */
1804 
1805   int dummy;			/* Internal use */
1806 
1807   int timestamp;
1808 
1809   char data[64];		/* Misc data (entry type dependent) */
1810   unsigned char enum_present[32];	/* Mask of allowed enum values */
1811   int control_no;		/* SOUND_MIXER_VOLUME..SOUND_MIXER_MIDI */
1812   /* (-1 means not indicated) */
1813 
1814 /*
1815  * The desc field is reserved for internal purposes of OSS. It should not be
1816  * used by applications.
1817  */
1818   unsigned int desc;
1819 #define MIXEXT_SCOPE_MASK			0x0000003f
1820 #define MIXEXT_SCOPE_OTHER			0x00000000
1821 #define MIXEXT_SCOPE_INPUT			0x00000001
1822 #define MIXEXT_SCOPE_OUTPUT			0x00000002
1823 #define MIXEXT_SCOPE_MONITOR			0x00000003
1824 #define MIXEXT_SCOPE_RECSWITCH			0x00000004
1825 
1826   char extname[32];
1827   int update_counter;
1828   int filler[7];
1829 } oss_mixext;
1830 
1831 typedef struct oss_mixext_root
1832 {
1833   char id[16];
1834   char name[48];
1835 } oss_mixext_root;
1836 
1837 typedef struct oss_mixer_value
1838 {
1839   int dev;
1840   int ctrl;
1841   int value;
1842   int flags;			/* Reserved for future use. Initialize to 0 */
1843   int timestamp;		/* Must be set to oss_mixext.timestamp */
1844   int filler[8];		/* Reserved for future use. Initialize to 0 */
1845 } oss_mixer_value;
1846 
1847 #define OSS_ENUM_MAXVALUE       255
1848 typedef struct oss_mixer_enuminfo
1849 {
1850 	int	dev;
1851 	int	ctrl;
1852 	int	nvalues;
1853 	int	version;                  /* Read the manual */
1854 	short	strindex[OSS_ENUM_MAXVALUE];
1855 	char	strings[3000];
1856 } oss_mixer_enuminfo;
1857 
1858 #define OPEN_READ       PCM_ENABLE_INPUT
1859 #define OPEN_WRITE      PCM_ENABLE_OUTPUT
1860 #define OPEN_READWRITE  (OPEN_READ|OPEN_WRITE)
1861 
1862 /**
1863  * @brief	Argument for SNDCTL_AUDIOINFO ioctl.
1864  *
1865  * For use w/ the SNDCTL_AUDIOINFO ioctl available on audio (/dev/dsp*)
1866  * devices.
1867  */
1868 typedef struct oss_audioinfo
1869 {
1870 	int	dev;		/* Audio device number */
1871 	char	name[64];
1872 	int	busy;		/* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
1873 	int	pid;
1874 	int	caps;		/* DSP_CAP_INPUT, DSP_CAP_OUTPUT */
1875 	int	iformats;
1876 	int	oformats;
1877 	int	magic;		/* Reserved for internal use */
1878 	char 	cmd[64];	/* Command using the device (if known) */
1879 	int	card_number;
1880 	int	port_number;
1881 	int	mixer_dev;
1882 	int	legacy_device;	/* Obsolete field. Replaced by devnode */
1883 	int	enabled;	/* 1=enabled, 0=device not ready at this
1884 				   moment */
1885 	int	flags;		/* For internal use only - no practical
1886 				   meaning */
1887 	int	min_rate;	/* Sample rate limits */
1888 	int	max_rate;
1889 	int	min_channels;	/* Number of channels supported */
1890 	int	max_channels;
1891 	int	binding;	/* DSP_BIND_FRONT, etc. 0 means undefined */
1892 	int	rate_source;
1893 	char	handle[32];
1894 	#define OSS_MAX_SAMPLE_RATES	20	/* Cannot be changed  */
1895 	unsigned int nrates;
1896 	unsigned int rates[OSS_MAX_SAMPLE_RATES]; /* Please read the manual before using these */
1897 	oss_longname_t	song_name;	/* Song name (if given) */
1898 	oss_label_t	label;		/* Device label (if given) */
1899 	int		latency;	/* In usecs, -1=unknown */
1900 	oss_devnode_t	devnode;	/* Device special file name (inside
1901 					   /dev) */
1902 	int next_play_engine;
1903 	int next_rec_engine;
1904 	int filler[184];
1905 } oss_audioinfo;
1906 
1907 typedef struct oss_mixerinfo
1908 {
1909   int dev;
1910   char id[16];
1911   char name[32];
1912   int modify_counter;
1913   int card_number;
1914   int port_number;
1915   char handle[32];
1916   int magic;			/* Reserved */
1917   int enabled;			/* Reserved */
1918   int caps;
1919 #define MIXER_CAP_VIRTUAL				0x00000001
1920   int flags;			/* Reserved */
1921   int nrext;
1922   /*
1923    * The priority field can be used to select the default (motherboard)
1924    * mixer device. The mixer with the highest priority is the
1925    * most preferred one. -2 or less means that this device cannot be used
1926    * as the default mixer.
1927    */
1928   int priority;
1929   oss_devnode_t devnode;
1930   int legacy_device;
1931   int filler[245];		/* Reserved */
1932 } oss_mixerinfo;
1933 
1934 typedef struct oss_midi_info
1935 {
1936   int dev;			/* Midi device number */
1937   char name[64];
1938   int busy;			/* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
1939   int pid;
1940   char cmd[64];			/* Command using the device (if known) */
1941   int caps;
1942 #define MIDI_CAP_MPU401		0x00000001	/**** OBSOLETE ****/
1943 #define MIDI_CAP_INPUT		0x00000002
1944 #define MIDI_CAP_OUTPUT		0x00000004
1945 #define MIDI_CAP_INOUT		(MIDI_CAP_INPUT|MIDI_CAP_OUTPUT)
1946 #define MIDI_CAP_VIRTUAL	0x00000008	/* Pseudo device */
1947 #define MIDI_CAP_MTCINPUT	0x00000010	/* Supports SNDCTL_MIDI_MTCINPUT */
1948 #define MIDI_CAP_CLIENT		0x00000020	/* Virtual client side device */
1949 #define MIDI_CAP_SERVER		0x00000040	/* Virtual server side device */
1950 #define MIDI_CAP_INTERNAL	0x00000080	/* Internal (synth) device */
1951 #define MIDI_CAP_EXTERNAL	0x00000100	/* external (MIDI port) device */
1952 #define MIDI_CAP_PTOP		0x00000200	/* Point to point link to one device */
1953 #define MIDI_CAP_MTC		0x00000400	/* MTC/SMPTE (control) device */
1954   int magic;			/* Reserved for internal use */
1955   int card_number;
1956   int port_number;
1957   int enabled;			/* 1=enabled, 0=device not ready at this moment */
1958   int flags;			/* For internal use only - no practical meaning */
1959   char handle[32];
1960   oss_longname_t song_name;	/* Song name (if known) */
1961   oss_label_t label;		/* Device label (if given) */
1962   int latency;			/* In usecs, -1=unknown */
1963   int filler[244];
1964 } oss_midi_info;
1965 
1966 typedef struct oss_card_info
1967 {
1968   int card;
1969   char shortname[16];
1970   char longname[128];
1971   int flags;
1972   char hw_info[400];
1973   int intr_count, ack_count;
1974   int filler[154];
1975 } oss_card_info;
1976 
1977 #define SNDCTL_SYSINFO          _IOR ('X', 1, oss_sysinfo)
1978 #define OSS_SYSINFO             SNDCTL_SYSINFO /* Old name */
1979 
1980 #define SNDCTL_MIX_NRMIX	_IOR ('X', 2, int)
1981 #define SNDCTL_MIX_NREXT	_IOWR('X', 3, int)
1982 #define SNDCTL_MIX_EXTINFO	_IOWR('X', 4, oss_mixext)
1983 #define SNDCTL_MIX_READ		_IOWR('X', 5, oss_mixer_value)
1984 #define SNDCTL_MIX_WRITE	_IOWR('X', 6, oss_mixer_value)
1985 
1986 #define SNDCTL_AUDIOINFO	_IOWR('X', 7, oss_audioinfo)
1987 #define SNDCTL_MIX_ENUMINFO	_IOWR('X', 8, oss_mixer_enuminfo)
1988 #define SNDCTL_MIDIINFO		_IOWR('X', 9, oss_midi_info)
1989 #define SNDCTL_MIXERINFO	_IOWR('X',10, oss_mixerinfo)
1990 #define SNDCTL_CARDINFO		_IOWR('X',11, oss_card_info)
1991 #define SNDCTL_ENGINEINFO	_IOWR('X',12, oss_audioinfo)
1992 #define SNDCTL_AUDIOINFO_EX	_IOWR('X',13, oss_audioinfo)
1993 
1994 /*
1995  * Few more "globally" available ioctl calls.
1996  */
1997 #define SNDCTL_SETSONG          _IOW ('Y', 2, oss_longname_t)
1998 #define SNDCTL_GETSONG          _IOR ('Y', 2, oss_longname_t)
1999 #define SNDCTL_SETNAME          _IOW ('Y', 3, oss_longname_t)
2000 #define SNDCTL_SETLABEL         _IOW ('Y', 4, oss_label_t)
2001 #define SNDCTL_GETLABEL         _IOR ('Y', 4, oss_label_t)
2002 
2003 #endif	/* !_SYS_SOUNDCARD_H_ */
2004