Commit | Line | Data |
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7840ced1 | 1 | /* sound.c -- sound support. |
53fab6e2 | 2 | Copyright (C) 1998, 1999, 2001 Free Software Foundation. |
7840ced1 GM |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | /* Written by Gerd Moellmann <gerd@gnu.org>. Tested with Luigi's | |
22 | driver on FreeBSD 2.2.7 with a SoundBlaster 16. */ | |
23 | ||
24 | #include <config.h> | |
25 | ||
26 | #if defined HAVE_SOUND | |
27 | ||
7840ced1 GM |
28 | #include <fcntl.h> |
29 | #include <unistd.h> | |
30 | #include <sys/types.h> | |
7840ced1 | 31 | #include <errno.h> |
53fab6e2 GM |
32 | #include "lisp.h" |
33 | #include "dispextern.h" | |
34 | #include "atimer.h" | |
bb6e8cee GM |
35 | #include <signal.h> |
36 | #include "syssignal.h" | |
7840ced1 | 37 | |
502150e5 PJ |
38 | #ifndef MSDOS |
39 | #include <sys/ioctl.h> | |
40 | #endif | |
41 | ||
7840ced1 GM |
42 | /* FreeBSD has machine/soundcard.h. Voxware sound driver docs mention |
43 | sys/soundcard.h. So, let's try whatever's there. */ | |
44 | ||
45 | #ifdef HAVE_MACHINE_SOUNDCARD_H | |
46 | #include <machine/soundcard.h> | |
47 | #endif | |
48 | #ifdef HAVE_SYS_SOUNDCARD_H | |
49 | #include <sys/soundcard.h> | |
50 | #endif | |
80fcd514 | 51 | #ifdef HAVE_SOUNDCARD_H |
80fcd514 KR |
52 | #include <soundcard.h> |
53 | #endif | |
54 | ||
55 | #ifndef DEFAULT_SOUND_DEVICE | |
56 | #define DEFAULT_SOUND_DEVICE "/dev/dsp" | |
57 | #endif | |
7840ced1 | 58 | |
7840ced1 GM |
59 | #define abs(X) ((X) < 0 ? -(X) : (X)) |
60 | ||
61 | /* Structure forward declarations. */ | |
62 | ||
d1299cde | 63 | struct sound; |
7840ced1 GM |
64 | struct sound_device; |
65 | ||
66 | /* The file header of RIFF-WAVE files (*.wav). Files are always in | |
67 | little-endian byte-order. */ | |
68 | ||
69 | struct wav_header | |
70 | { | |
71 | u_int32_t magic; | |
72 | u_int32_t length; | |
73 | u_int32_t chunk_type; | |
74 | u_int32_t chunk_format; | |
75 | u_int32_t chunk_length; | |
76 | u_int16_t format; | |
77 | u_int16_t channels; | |
78 | u_int32_t sample_rate; | |
79 | u_int32_t bytes_per_second; | |
80 | u_int16_t sample_size; | |
81 | u_int16_t precision; | |
82 | u_int32_t chunk_data; | |
83 | u_int32_t data_length; | |
84 | }; | |
85 | ||
86 | /* The file header of Sun adio files (*.au). Files are always in | |
87 | big-endian byte-order. */ | |
88 | ||
89 | struct au_header | |
90 | { | |
91 | /* ASCII ".snd" */ | |
92 | u_int32_t magic_number; | |
93 | ||
94 | /* Offset of data part from start of file. Minimum value is 24. */ | |
95 | u_int32_t data_offset; | |
96 | ||
97 | /* Size of data part, 0xffffffff if unknown. */ | |
98 | u_int32_t data_size; | |
99 | ||
100 | /* Data encoding format. | |
101 | 1 8-bit ISDN u-law | |
102 | 2 8-bit linear PCM (REF-PCM) | |
103 | 3 16-bit linear PCM | |
104 | 4 24-bit linear PCM | |
105 | 5 32-bit linear PCM | |
106 | 6 32-bit IEEE floating-point | |
107 | 7 64-bit IEEE floating-point | |
108 | 23 8-bit u-law compressed using CCITT 0.721 ADPCM voice data | |
109 | encoding scheme. */ | |
110 | u_int32_t encoding; | |
111 | ||
112 | /* Number of samples per second. */ | |
113 | u_int32_t sample_rate; | |
114 | ||
115 | /* Number of interleaved channels. */ | |
116 | u_int32_t channels; | |
117 | }; | |
118 | ||
119 | /* Maximum of all sound file headers sizes. */ | |
120 | ||
121 | #define MAX_SOUND_HEADER_BYTES \ | |
122 | max (sizeof (struct wav_header), sizeof (struct au_header)) | |
123 | ||
124 | /* Interface structure for sound devices. */ | |
125 | ||
126 | struct sound_device | |
127 | { | |
128 | /* The name of the device or null meaning use a default device name. */ | |
129 | char *file; | |
130 | ||
131 | /* File descriptor of the device. */ | |
132 | int fd; | |
133 | ||
134 | /* Device-dependent format. */ | |
135 | int format; | |
136 | ||
137 | /* Volume (0..100). Zero means unspecified. */ | |
138 | int volume; | |
139 | ||
140 | /* Sample size. */ | |
141 | int sample_size; | |
142 | ||
143 | /* Sample rate. */ | |
144 | int sample_rate; | |
145 | ||
146 | /* Bytes per second. */ | |
147 | int bps; | |
148 | ||
149 | /* 1 = mono, 2 = stereo, 0 = don't set. */ | |
150 | int channels; | |
151 | ||
152 | /* Open device SD. */ | |
153 | void (* open) P_ ((struct sound_device *sd)); | |
154 | ||
155 | /* Close device SD. */ | |
156 | void (* close) P_ ((struct sound_device *sd)); | |
157 | ||
158 | /* Configure SD accoring to device-dependent parameters. */ | |
159 | void (* configure) P_ ((struct sound_device *device)); | |
160 | ||
d1299cde | 161 | /* Choose a device-dependent format for outputting sound S. */ |
7840ced1 | 162 | void (* choose_format) P_ ((struct sound_device *sd, |
d1299cde | 163 | struct sound *s)); |
7840ced1 GM |
164 | |
165 | /* Write NYBTES bytes from BUFFER to device SD. */ | |
166 | void (* write) P_ ((struct sound_device *sd, char *buffer, int nbytes)); | |
167 | ||
168 | /* A place for devices to store additional data. */ | |
169 | void *data; | |
170 | }; | |
171 | ||
172 | /* An enumerator for each supported sound file type. */ | |
173 | ||
174 | enum sound_type | |
175 | { | |
176 | RIFF, | |
177 | SUN_AUDIO | |
178 | }; | |
179 | ||
180 | /* Interface structure for sound files. */ | |
181 | ||
d1299cde | 182 | struct sound |
7840ced1 GM |
183 | { |
184 | /* The type of the file. */ | |
185 | enum sound_type type; | |
186 | ||
d1299cde | 187 | /* File descriptor of a sound file. */ |
7840ced1 GM |
188 | int fd; |
189 | ||
d1299cde GM |
190 | /* Pointer to sound file header. This contains header_size bytes |
191 | read from the start of a sound file. */ | |
7840ced1 GM |
192 | char *header; |
193 | ||
d1299cde GM |
194 | /* Number of bytes raed from sound file. This is always <= |
195 | MAX_SOUND_HEADER_BYTES. */ | |
196 | int header_size; | |
197 | ||
198 | /* Sound data, if a string. */ | |
199 | Lisp_Object data; | |
200 | ||
201 | /* Play sound file S on device SD. */ | |
202 | void (* play) P_ ((struct sound *s, struct sound_device *sd)); | |
7840ced1 GM |
203 | }; |
204 | ||
205 | /* Indices of attributes in a sound attributes vector. */ | |
206 | ||
207 | enum sound_attr | |
208 | { | |
209 | SOUND_FILE, | |
d1299cde | 210 | SOUND_DATA, |
7840ced1 GM |
211 | SOUND_DEVICE, |
212 | SOUND_VOLUME, | |
213 | SOUND_ATTR_SENTINEL | |
214 | }; | |
215 | ||
216 | /* Symbols. */ | |
217 | ||
d1299cde | 218 | extern Lisp_Object QCfile, QCdata; |
7840ced1 GM |
219 | Lisp_Object QCvolume, QCdevice; |
220 | Lisp_Object Qsound; | |
2a53558d | 221 | Lisp_Object Qplay_sound_functions; |
7840ced1 GM |
222 | |
223 | /* These are set during `play-sound' so that sound_cleanup has | |
224 | access to them. */ | |
225 | ||
d1299cde GM |
226 | struct sound_device *current_sound_device; |
227 | struct sound *current_sound; | |
7840ced1 GM |
228 | |
229 | /* Function prototypes. */ | |
230 | ||
231 | static void vox_open P_ ((struct sound_device *)); | |
232 | static void vox_configure P_ ((struct sound_device *)); | |
233 | static void vox_close P_ ((struct sound_device *sd)); | |
d1299cde | 234 | static void vox_choose_format P_ ((struct sound_device *, struct sound *)); |
7840ced1 GM |
235 | static void vox_init P_ ((struct sound_device *)); |
236 | static void vox_write P_ ((struct sound_device *, char *, int)); | |
237 | static void sound_perror P_ ((char *)); | |
62725a92 | 238 | static void sound_warning P_ ((char *)); |
7840ced1 | 239 | static int parse_sound P_ ((Lisp_Object, Lisp_Object *)); |
d1299cde | 240 | static void find_sound_type P_ ((struct sound *)); |
7840ced1 GM |
241 | static u_int32_t le2hl P_ ((u_int32_t)); |
242 | static u_int16_t le2hs P_ ((u_int16_t)); | |
243 | static u_int32_t be2hl P_ ((u_int32_t)); | |
d1299cde GM |
244 | static int wav_init P_ ((struct sound *)); |
245 | static void wav_play P_ ((struct sound *, struct sound_device *)); | |
246 | static int au_init P_ ((struct sound *)); | |
247 | static void au_play P_ ((struct sound *, struct sound_device *)); | |
7840ced1 | 248 | |
9680b9d0 GM |
249 | #if 0 /* Currently not used. */ |
250 | static u_int16_t be2hs P_ ((u_int16_t)); | |
251 | #endif | |
252 | ||
7840ced1 GM |
253 | |
254 | \f | |
255 | /*********************************************************************** | |
256 | General | |
257 | ***********************************************************************/ | |
258 | ||
259 | /* Like perror, but signals an error. */ | |
260 | ||
261 | static void | |
262 | sound_perror (msg) | |
263 | char *msg; | |
264 | { | |
62725a92 GM |
265 | turn_on_atimers (1); |
266 | #ifdef SIGIO | |
267 | sigunblock (sigmask (SIGIO)); | |
268 | #endif | |
269 | if (errno != 0) | |
270 | error ("%s: %s", msg, strerror (errno)); | |
271 | else | |
272 | error ("%s", msg); | |
273 | } | |
274 | ||
275 | ||
276 | /* Display a warning message. */ | |
277 | ||
278 | static void | |
279 | sound_warning (msg) | |
280 | char *msg; | |
281 | { | |
282 | message (msg); | |
7840ced1 GM |
283 | } |
284 | ||
285 | ||
286 | /* Parse sound specification SOUND, and fill ATTRS with what is | |
287 | found. Value is non-zero if SOUND Is a valid sound specification. | |
288 | A valid sound specification is a list starting with the symbol | |
289 | `sound'. The rest of the list is a property list which may | |
290 | contain the following key/value pairs: | |
291 | ||
292 | - `:file FILE' | |
293 | ||
294 | FILE is the sound file to play. If it isn't an absolute name, | |
295 | it's searched under `data-directory'. | |
296 | ||
d1299cde GM |
297 | - `:data DATA' |
298 | ||
299 | DATA is a string containing sound data. Either :file or :data | |
300 | may be present, but not both. | |
301 | ||
7840ced1 GM |
302 | - `:device DEVICE' |
303 | ||
304 | DEVICE is the name of the device to play on, e.g. "/dev/dsp2". | |
305 | If not specified, a default device is used. | |
306 | ||
307 | - `:volume VOL' | |
308 | ||
2a53558d GM |
309 | VOL must be an integer in the range [0, 100], or a float in the |
310 | range [0, 1]. */ | |
7840ced1 GM |
311 | |
312 | static int | |
313 | parse_sound (sound, attrs) | |
314 | Lisp_Object sound; | |
315 | Lisp_Object *attrs; | |
316 | { | |
317 | /* SOUND must be a list starting with the symbol `sound'. */ | |
318 | if (!CONSP (sound) || !EQ (XCAR (sound), Qsound)) | |
319 | return 0; | |
320 | ||
321 | sound = XCDR (sound); | |
322 | attrs[SOUND_FILE] = Fplist_get (sound, QCfile); | |
d1299cde | 323 | attrs[SOUND_DATA] = Fplist_get (sound, QCdata); |
7840ced1 GM |
324 | attrs[SOUND_DEVICE] = Fplist_get (sound, QCdevice); |
325 | attrs[SOUND_VOLUME] = Fplist_get (sound, QCvolume); | |
326 | ||
d1299cde GM |
327 | /* File name or data must be specified. */ |
328 | if (!STRINGP (attrs[SOUND_FILE]) | |
329 | && !STRINGP (attrs[SOUND_DATA])) | |
7840ced1 GM |
330 | return 0; |
331 | ||
332 | /* Volume must be in the range 0..100 or unspecified. */ | |
333 | if (!NILP (attrs[SOUND_VOLUME])) | |
334 | { | |
2a53558d GM |
335 | if (INTEGERP (attrs[SOUND_VOLUME])) |
336 | { | |
337 | if (XINT (attrs[SOUND_VOLUME]) < 0 | |
338 | || XINT (attrs[SOUND_VOLUME]) > 100) | |
339 | return 0; | |
340 | } | |
341 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
342 | { | |
343 | if (XFLOAT_DATA (attrs[SOUND_VOLUME]) < 0 | |
344 | || XFLOAT_DATA (attrs[SOUND_VOLUME]) > 1) | |
345 | return 0; | |
346 | } | |
347 | else | |
7840ced1 GM |
348 | return 0; |
349 | } | |
350 | ||
351 | /* Device must be a string or unspecified. */ | |
352 | if (!NILP (attrs[SOUND_DEVICE]) | |
353 | && !STRINGP (attrs[SOUND_DEVICE])) | |
354 | return 0; | |
355 | ||
356 | return 1; | |
357 | } | |
358 | ||
359 | ||
360 | /* Find out the type of the sound file whose file descriptor is FD. | |
d1299cde | 361 | S is the sound file structure to fill in. */ |
7840ced1 GM |
362 | |
363 | static void | |
d1299cde GM |
364 | find_sound_type (s) |
365 | struct sound *s; | |
7840ced1 | 366 | { |
d1299cde GM |
367 | if (!wav_init (s) && !au_init (s)) |
368 | error ("Unknown sound format"); | |
7840ced1 GM |
369 | } |
370 | ||
371 | ||
372 | /* Function installed by play-sound with record_unwind_protect. */ | |
373 | ||
374 | static Lisp_Object | |
375 | sound_cleanup (arg) | |
376 | Lisp_Object arg; | |
377 | { | |
d1299cde | 378 | if (current_sound_device) |
7840ced1 | 379 | { |
66e4690f KR |
380 | if (current_sound_device->close) |
381 | current_sound_device->close (current_sound_device); | |
d1299cde GM |
382 | if (current_sound->fd > 0) |
383 | emacs_close (current_sound->fd); | |
7840ced1 | 384 | } |
3887b449 GM |
385 | |
386 | return Qnil; | |
7840ced1 GM |
387 | } |
388 | ||
389 | ||
390 | DEFUN ("play-sound", Fplay_sound, Splay_sound, 1, 1, 0, | |
8c1a1077 PJ |
391 | doc: /* Play sound SOUND. |
392 | SOUND is a list of the form `(sound KEYWORD VALUE...)'. | |
393 | The following keywords are recognized: | |
394 | ||
395 | :file FILE.- read sound data from FILE. If FILE isn't an | |
396 | absolute file name, it is searched in `data-directory'. | |
397 | ||
398 | :data DATA - read sound data from string DATA. | |
399 | ||
400 | Exactly one of :file or :data must be present. | |
401 | ||
402 | :volume VOL - set volume to VOL. VOL must an integer in the | |
403 | range 0..100 or a float in the range 0..1.0. If not specified, | |
404 | don't change the volume setting of the sound device. | |
405 | ||
406 | :device DEVICE - play sound on DEVICE. If not specified, | |
407 | a system-dependent default device name is used. */) | |
408 | (sound) | |
7840ced1 GM |
409 | Lisp_Object sound; |
410 | { | |
411 | Lisp_Object attrs[SOUND_ATTR_SENTINEL]; | |
7840ced1 GM |
412 | Lisp_Object file; |
413 | struct gcpro gcpro1, gcpro2; | |
7840ced1 | 414 | struct sound_device sd; |
d1299cde | 415 | struct sound s; |
7840ced1 GM |
416 | Lisp_Object args[2]; |
417 | int count = specpdl_ptr - specpdl; | |
418 | ||
419 | file = Qnil; | |
420 | GCPRO2 (sound, file); | |
421 | bzero (&sd, sizeof sd); | |
d1299cde GM |
422 | bzero (&s, sizeof s); |
423 | current_sound_device = &sd; | |
424 | current_sound = &s; | |
7840ced1 | 425 | record_unwind_protect (sound_cleanup, Qnil); |
d1299cde | 426 | s.header = (char *) alloca (MAX_SOUND_HEADER_BYTES); |
7840ced1 GM |
427 | |
428 | /* Parse the sound specification. Give up if it is invalid. */ | |
429 | if (!parse_sound (sound, attrs)) | |
d1299cde GM |
430 | error ("Invalid sound specification"); |
431 | ||
432 | if (STRINGP (attrs[SOUND_FILE])) | |
7840ced1 | 433 | { |
d1299cde GM |
434 | /* Open the sound file. */ |
435 | s.fd = openp (Fcons (Vdata_directory, Qnil), | |
c0ec53ad | 436 | attrs[SOUND_FILE], Qnil, &file, 0); |
d1299cde | 437 | if (s.fd < 0) |
62725a92 | 438 | sound_perror ("Could not open sound file"); |
d1299cde GM |
439 | |
440 | /* Read the first bytes from the file. */ | |
441 | s.header_size = emacs_read (s.fd, s.header, MAX_SOUND_HEADER_BYTES); | |
442 | if (s.header_size < 0) | |
62725a92 | 443 | sound_perror ("Invalid sound file header"); |
d1299cde GM |
444 | } |
445 | else | |
446 | { | |
447 | s.data = attrs[SOUND_DATA]; | |
448 | bcopy (XSTRING (s.data)->data, s.header, | |
449 | min (MAX_SOUND_HEADER_BYTES, STRING_BYTES (XSTRING (s.data)))); | |
7840ced1 GM |
450 | } |
451 | ||
d1299cde GM |
452 | /* Find out the type of sound. Give up if we can't tell. */ |
453 | find_sound_type (&s); | |
7840ced1 GM |
454 | |
455 | /* Set up a device. */ | |
456 | if (STRINGP (attrs[SOUND_DEVICE])) | |
457 | { | |
458 | int len = XSTRING (attrs[SOUND_DEVICE])->size; | |
459 | sd.file = (char *) alloca (len + 1); | |
460 | strcpy (sd.file, XSTRING (attrs[SOUND_DEVICE])->data); | |
461 | } | |
d1299cde | 462 | |
7840ced1 GM |
463 | if (INTEGERP (attrs[SOUND_VOLUME])) |
464 | sd.volume = XFASTINT (attrs[SOUND_VOLUME]); | |
2a53558d GM |
465 | else if (FLOATP (attrs[SOUND_VOLUME])) |
466 | sd.volume = XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; | |
7840ced1 | 467 | |
2a53558d | 468 | args[0] = Qplay_sound_functions; |
7840ced1 | 469 | args[1] = sound; |
52e386c2 | 470 | Frun_hook_with_args (2, args); |
7840ced1 | 471 | |
d1299cde GM |
472 | /* There is only one type of device we currently support, the VOX |
473 | sound driver. Set up the device interface functions for that | |
474 | device. */ | |
7840ced1 | 475 | vox_init (&sd); |
d1299cde GM |
476 | |
477 | /* Open the device. */ | |
7840ced1 GM |
478 | sd.open (&sd); |
479 | ||
d1299cde GM |
480 | /* Play the sound. */ |
481 | s.play (&s, &sd); | |
482 | ||
483 | /* Close the input file, if any. */ | |
484 | if (!STRINGP (s.data)) | |
485 | { | |
486 | emacs_close (s.fd); | |
487 | s.fd = -1; | |
488 | } | |
489 | ||
490 | /* Close the device. */ | |
7840ced1 | 491 | sd.close (&sd); |
d1299cde GM |
492 | |
493 | /* Clean up. */ | |
494 | current_sound_device = NULL; | |
495 | current_sound = NULL; | |
7840ced1 GM |
496 | UNGCPRO; |
497 | unbind_to (count, Qnil); | |
498 | return Qnil; | |
499 | } | |
500 | ||
501 | \f | |
502 | /*********************************************************************** | |
503 | Byte-order Conversion | |
504 | ***********************************************************************/ | |
505 | ||
506 | /* Convert 32-bit value VALUE which is in little-endian byte-order | |
507 | to host byte-order. */ | |
508 | ||
509 | static u_int32_t | |
510 | le2hl (value) | |
511 | u_int32_t value; | |
512 | { | |
513 | #ifdef WORDS_BIG_ENDIAN | |
514 | unsigned char *p = (unsigned char *) &value; | |
515 | value = p[0] + (p[1] << 8) + (p[2] << 16) + (p[3] << 24); | |
516 | #endif | |
517 | return value; | |
518 | } | |
519 | ||
520 | ||
521 | /* Convert 16-bit value VALUE which is in little-endian byte-order | |
522 | to host byte-order. */ | |
523 | ||
524 | static u_int16_t | |
525 | le2hs (value) | |
526 | u_int16_t value; | |
527 | { | |
528 | #ifdef WORDS_BIG_ENDIAN | |
529 | unsigned char *p = (unsigned char *) &value; | |
530 | value = p[0] + (p[1] << 8); | |
531 | #endif | |
532 | return value; | |
533 | } | |
534 | ||
535 | ||
536 | /* Convert 32-bit value VALUE which is in big-endian byte-order | |
537 | to host byte-order. */ | |
538 | ||
539 | static u_int32_t | |
540 | be2hl (value) | |
541 | u_int32_t value; | |
542 | { | |
543 | #ifndef WORDS_BIG_ENDIAN | |
544 | unsigned char *p = (unsigned char *) &value; | |
545 | value = p[3] + (p[2] << 8) + (p[1] << 16) + (p[0] << 24); | |
546 | #endif | |
547 | return value; | |
548 | } | |
549 | ||
550 | ||
9680b9d0 GM |
551 | #if 0 /* Currently not used. */ |
552 | ||
7840ced1 GM |
553 | /* Convert 16-bit value VALUE which is in big-endian byte-order |
554 | to host byte-order. */ | |
555 | ||
556 | static u_int16_t | |
557 | be2hs (value) | |
558 | u_int16_t value; | |
559 | { | |
560 | #ifndef WORDS_BIG_ENDIAN | |
561 | unsigned char *p = (unsigned char *) &value; | |
562 | value = p[1] + (p[0] << 8); | |
563 | #endif | |
564 | return value; | |
565 | } | |
566 | ||
9680b9d0 | 567 | #endif /* 0 */ |
7840ced1 GM |
568 | |
569 | \f | |
570 | /*********************************************************************** | |
571 | RIFF-WAVE (*.wav) | |
572 | ***********************************************************************/ | |
573 | ||
d1299cde | 574 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
575 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
576 | sound file. If the file is a WAV-format file, set up interface | |
d1299cde | 577 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
578 | Value is non-zero if the file is a WAV file. */ |
579 | ||
580 | static int | |
d1299cde GM |
581 | wav_init (s) |
582 | struct sound *s; | |
7840ced1 | 583 | { |
d1299cde GM |
584 | struct wav_header *header = (struct wav_header *) s->header; |
585 | ||
586 | if (s->header_size < sizeof *header | |
587 | || bcmp (s->header, "RIFF", 4) != 0) | |
7840ced1 GM |
588 | return 0; |
589 | ||
590 | /* WAV files are in little-endian order. Convert the header | |
591 | if on a big-endian machine. */ | |
592 | header->magic = le2hl (header->magic); | |
593 | header->length = le2hl (header->length); | |
594 | header->chunk_type = le2hl (header->chunk_type); | |
595 | header->chunk_format = le2hl (header->chunk_format); | |
596 | header->chunk_length = le2hl (header->chunk_length); | |
597 | header->format = le2hs (header->format); | |
598 | header->channels = le2hs (header->channels); | |
599 | header->sample_rate = le2hl (header->sample_rate); | |
600 | header->bytes_per_second = le2hl (header->bytes_per_second); | |
601 | header->sample_size = le2hs (header->sample_size); | |
602 | header->precision = le2hs (header->precision); | |
603 | header->chunk_data = le2hl (header->chunk_data); | |
604 | header->data_length = le2hl (header->data_length); | |
605 | ||
606 | /* Set up the interface functions for WAV. */ | |
d1299cde GM |
607 | s->type = RIFF; |
608 | s->play = wav_play; | |
7840ced1 GM |
609 | |
610 | return 1; | |
611 | } | |
612 | ||
613 | ||
d1299cde | 614 | /* Play RIFF-WAVE audio file S on sound device SD. */ |
7840ced1 GM |
615 | |
616 | static void | |
d1299cde GM |
617 | wav_play (s, sd) |
618 | struct sound *s; | |
7840ced1 GM |
619 | struct sound_device *sd; |
620 | { | |
d1299cde | 621 | struct wav_header *header = (struct wav_header *) s->header; |
7840ced1 GM |
622 | |
623 | /* Let the device choose a suitable device-dependent format | |
624 | for the file. */ | |
d1299cde | 625 | sd->choose_format (sd, s); |
7840ced1 GM |
626 | |
627 | /* Configure the device. */ | |
628 | sd->sample_size = header->sample_size; | |
629 | sd->sample_rate = header->sample_rate; | |
630 | sd->bps = header->bytes_per_second; | |
631 | sd->channels = header->channels; | |
632 | sd->configure (sd); | |
633 | ||
634 | /* Copy sound data to the device. The WAV file specification is | |
635 | actually more complex. This simple scheme worked with all WAV | |
636 | files I found so far. If someone feels inclined to implement the | |
637 | whole RIFF-WAVE spec, please do. */ | |
d1299cde GM |
638 | if (STRINGP (s->data)) |
639 | sd->write (sd, XSTRING (s->data)->data + sizeof *header, | |
640 | STRING_BYTES (XSTRING (s->data)) - sizeof *header); | |
641 | else | |
642 | { | |
643 | char *buffer; | |
644 | int nbytes; | |
645 | int blksize = 2048; | |
646 | ||
647 | buffer = (char *) alloca (blksize); | |
648 | lseek (s->fd, sizeof *header, SEEK_SET); | |
7840ced1 | 649 | |
d1299cde GM |
650 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) |
651 | sd->write (sd, buffer, nbytes); | |
7840ced1 | 652 | |
d1299cde | 653 | if (nbytes < 0) |
62725a92 | 654 | sound_perror ("Error reading sound file"); |
d1299cde | 655 | } |
7840ced1 GM |
656 | } |
657 | ||
658 | ||
659 | \f | |
660 | /*********************************************************************** | |
661 | Sun Audio (*.au) | |
662 | ***********************************************************************/ | |
663 | ||
664 | /* Sun audio file encodings. */ | |
665 | ||
666 | enum au_encoding | |
667 | { | |
668 | AU_ENCODING_ULAW_8 = 1, | |
669 | AU_ENCODING_8, | |
670 | AU_ENCODING_16, | |
671 | AU_ENCODING_24, | |
672 | AU_ENCODING_32, | |
673 | AU_ENCODING_IEEE32, | |
674 | AU_ENCODING_IEEE64, | |
675 | AU_COMPRESSED = 23 | |
676 | }; | |
677 | ||
678 | ||
d1299cde | 679 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
680 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
681 | sound file. If the file is a AU-format file, set up interface | |
d1299cde | 682 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
683 | Value is non-zero if the file is an AU file. */ |
684 | ||
685 | static int | |
d1299cde GM |
686 | au_init (s) |
687 | struct sound *s; | |
7840ced1 | 688 | { |
d1299cde | 689 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 | 690 | |
d1299cde GM |
691 | if (s->header_size < sizeof *header |
692 | || bcmp (s->header, ".snd", 4) != 0) | |
7840ced1 GM |
693 | return 0; |
694 | ||
695 | header->magic_number = be2hl (header->magic_number); | |
696 | header->data_offset = be2hl (header->data_offset); | |
697 | header->data_size = be2hl (header->data_size); | |
698 | header->encoding = be2hl (header->encoding); | |
699 | header->sample_rate = be2hl (header->sample_rate); | |
700 | header->channels = be2hl (header->channels); | |
701 | ||
702 | /* Set up the interface functions for AU. */ | |
d1299cde GM |
703 | s->type = SUN_AUDIO; |
704 | s->play = au_play; | |
7840ced1 GM |
705 | |
706 | return 1; | |
707 | } | |
708 | ||
709 | ||
d1299cde | 710 | /* Play Sun audio file S on sound device SD. */ |
7840ced1 GM |
711 | |
712 | static void | |
d1299cde GM |
713 | au_play (s, sd) |
714 | struct sound *s; | |
7840ced1 GM |
715 | struct sound_device *sd; |
716 | { | |
d1299cde | 717 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
718 | |
719 | sd->sample_size = 0; | |
720 | sd->sample_rate = header->sample_rate; | |
721 | sd->bps = 0; | |
722 | sd->channels = header->channels; | |
d1299cde | 723 | sd->choose_format (sd, s); |
7840ced1 | 724 | sd->configure (sd); |
d1299cde GM |
725 | |
726 | if (STRINGP (s->data)) | |
727 | sd->write (sd, XSTRING (s->data)->data + header->data_offset, | |
728 | STRING_BYTES (XSTRING (s->data)) - header->data_offset); | |
729 | else | |
730 | { | |
731 | int blksize = 2048; | |
732 | char *buffer; | |
733 | int nbytes; | |
7840ced1 | 734 | |
d1299cde GM |
735 | /* Seek */ |
736 | lseek (s->fd, header->data_offset, SEEK_SET); | |
7840ced1 | 737 | |
d1299cde GM |
738 | /* Copy sound data to the device. */ |
739 | buffer = (char *) alloca (blksize); | |
740 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) | |
741 | sd->write (sd, buffer, nbytes); | |
742 | ||
743 | if (nbytes < 0) | |
62725a92 | 744 | sound_perror ("Error reading sound file"); |
d1299cde | 745 | } |
7840ced1 GM |
746 | } |
747 | ||
748 | ||
749 | \f | |
750 | /*********************************************************************** | |
751 | Voxware Driver Interface | |
752 | ***********************************************************************/ | |
753 | ||
754 | /* This driver is available on GNU/Linux, and the free BSDs. FreeBSD | |
755 | has a compatible own driver aka Luigi's driver. */ | |
756 | ||
757 | ||
758 | /* Open device SD. If SD->file is non-null, open that device, | |
759 | otherwise use a default device name. */ | |
760 | ||
761 | static void | |
762 | vox_open (sd) | |
763 | struct sound_device *sd; | |
764 | { | |
765 | char *file; | |
766 | ||
767 | /* Open the sound device. Default is /dev/dsp. */ | |
768 | if (sd->file) | |
769 | file = sd->file; | |
770 | else | |
80fcd514 | 771 | file = DEFAULT_SOUND_DEVICE; |
7840ced1 | 772 | |
68c45bf0 | 773 | sd->fd = emacs_open (file, O_WRONLY, 0); |
7840ced1 GM |
774 | if (sd->fd < 0) |
775 | sound_perror (file); | |
776 | } | |
777 | ||
778 | ||
779 | /* Configure device SD from parameters in it. */ | |
780 | ||
781 | static void | |
782 | vox_configure (sd) | |
783 | struct sound_device *sd; | |
784 | { | |
28fcb7dc | 785 | int val; |
7840ced1 GM |
786 | |
787 | xassert (sd->fd >= 0); | |
788 | ||
bb6e8cee GM |
789 | /* On GNU/Linux, it seems that the device driver doesn't like to be |
790 | interrupted by a signal. Block the ones we know to cause | |
791 | troubles. */ | |
b5cb1ada | 792 | turn_on_atimers (0); |
bb6e8cee GM |
793 | #ifdef SIGIO |
794 | sigblock (sigmask (SIGIO)); | |
795 | #endif | |
b5cb1ada | 796 | |
28fcb7dc GM |
797 | val = sd->format; |
798 | if (ioctl (sd->fd, SNDCTL_DSP_SETFMT, &sd->format) < 0 | |
799 | || val != sd->format) | |
62725a92 | 800 | sound_perror ("Could not set sound format"); |
7840ced1 | 801 | |
28fcb7dc GM |
802 | val = sd->channels != 1; |
803 | if (ioctl (sd->fd, SNDCTL_DSP_STEREO, &val) < 0 | |
804 | || val != (sd->channels != 1)) | |
62725a92 | 805 | sound_perror ("Could not set stereo/mono"); |
7840ced1 | 806 | |
28fcb7dc GM |
807 | /* I think bps and sampling_rate are the same, but who knows. |
808 | Check this. and use SND_DSP_SPEED for both. */ | |
809 | if (sd->sample_rate > 0) | |
810 | { | |
811 | val = sd->sample_rate; | |
62725a92 GM |
812 | if (ioctl (sd->fd, SNDCTL_DSP_SPEED, &sd->sample_rate) < 0) |
813 | sound_perror ("Could not set sound speed"); | |
814 | else if (val != sd->sample_rate) | |
815 | sound_warning ("Could not set sample rate"); | |
28fcb7dc | 816 | } |
7840ced1 | 817 | |
3887b449 GM |
818 | if (sd->volume > 0) |
819 | { | |
820 | int volume = sd->volume & 0xff; | |
821 | volume |= volume << 8; | |
28fcb7dc GM |
822 | /* This may fail if there is no mixer. Ignore the failure. */ |
823 | ioctl (sd->fd, SOUND_MIXER_WRITE_PCM, &volume); | |
3887b449 | 824 | } |
b5cb1ada GM |
825 | |
826 | turn_on_atimers (1); | |
bb6e8cee GM |
827 | #ifdef SIGIO |
828 | sigunblock (sigmask (SIGIO)); | |
829 | #endif | |
7840ced1 GM |
830 | } |
831 | ||
832 | ||
833 | /* Close device SD if it is open. */ | |
834 | ||
835 | static void | |
836 | vox_close (sd) | |
837 | struct sound_device *sd; | |
838 | { | |
839 | if (sd->fd >= 0) | |
840 | { | |
bb6e8cee GM |
841 | /* On GNU/Linux, it seems that the device driver doesn't like to |
842 | be interrupted by a signal. Block the ones we know to cause | |
843 | troubles. */ | |
844 | #ifdef SIGIO | |
845 | sigblock (sigmask (SIGIO)); | |
846 | #endif | |
b5cb1ada | 847 | turn_on_atimers (0); |
bb6e8cee GM |
848 | |
849 | /* Flush sound data, and reset the device. */ | |
7840ced1 | 850 | ioctl (sd->fd, SNDCTL_DSP_SYNC, NULL); |
bb6e8cee | 851 | |
b5cb1ada | 852 | turn_on_atimers (1); |
bb6e8cee GM |
853 | #ifdef SIGIO |
854 | sigunblock (sigmask (SIGIO)); | |
855 | #endif | |
7840ced1 GM |
856 | |
857 | /* Close the device. */ | |
68c45bf0 | 858 | emacs_close (sd->fd); |
7840ced1 GM |
859 | sd->fd = -1; |
860 | } | |
861 | } | |
862 | ||
863 | ||
d1299cde | 864 | /* Choose device-dependent format for device SD from sound file S. */ |
7840ced1 GM |
865 | |
866 | static void | |
d1299cde | 867 | vox_choose_format (sd, s) |
7840ced1 | 868 | struct sound_device *sd; |
d1299cde | 869 | struct sound *s; |
7840ced1 | 870 | { |
d1299cde | 871 | if (s->type == RIFF) |
7840ced1 | 872 | { |
d1299cde | 873 | struct wav_header *h = (struct wav_header *) s->header; |
7840ced1 GM |
874 | if (h->precision == 8) |
875 | sd->format = AFMT_U8; | |
876 | else if (h->precision == 16) | |
877 | sd->format = AFMT_S16_LE; | |
878 | else | |
879 | error ("Unsupported WAV file format"); | |
880 | } | |
d1299cde | 881 | else if (s->type == SUN_AUDIO) |
7840ced1 | 882 | { |
d1299cde | 883 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
884 | switch (header->encoding) |
885 | { | |
886 | case AU_ENCODING_ULAW_8: | |
887 | case AU_ENCODING_IEEE32: | |
888 | case AU_ENCODING_IEEE64: | |
889 | sd->format = AFMT_MU_LAW; | |
890 | break; | |
891 | ||
892 | case AU_ENCODING_8: | |
893 | case AU_ENCODING_16: | |
894 | case AU_ENCODING_24: | |
895 | case AU_ENCODING_32: | |
896 | sd->format = AFMT_S16_LE; | |
897 | break; | |
898 | ||
899 | default: | |
900 | error ("Unsupported AU file format"); | |
901 | } | |
902 | } | |
903 | else | |
904 | abort (); | |
905 | } | |
906 | ||
907 | ||
908 | /* Initialize device SD. Set up the interface functions in the device | |
909 | structure. */ | |
910 | ||
911 | static void | |
912 | vox_init (sd) | |
913 | struct sound_device *sd; | |
914 | { | |
915 | sd->fd = -1; | |
916 | sd->open = vox_open; | |
917 | sd->close = vox_close; | |
918 | sd->configure = vox_configure; | |
919 | sd->choose_format = vox_choose_format; | |
920 | sd->write = vox_write; | |
921 | } | |
922 | ||
923 | ||
924 | /* Write NBYTES bytes from BUFFER to device SD. */ | |
925 | ||
926 | static void | |
927 | vox_write (sd, buffer, nbytes) | |
928 | struct sound_device *sd; | |
929 | char *buffer; | |
930 | int nbytes; | |
931 | { | |
68c45bf0 | 932 | int nwritten = emacs_write (sd->fd, buffer, nbytes); |
7840ced1 | 933 | if (nwritten < 0) |
62725a92 | 934 | sound_perror ("Error writing to sound device"); |
7840ced1 GM |
935 | } |
936 | ||
937 | ||
938 | \f | |
939 | /*********************************************************************** | |
940 | Initialization | |
941 | ***********************************************************************/ | |
942 | ||
943 | void | |
944 | syms_of_sound () | |
945 | { | |
946 | QCdevice = intern (":device"); | |
947 | staticpro (&QCdevice); | |
948 | QCvolume = intern (":volume"); | |
949 | staticpro (&QCvolume); | |
950 | Qsound = intern ("sound"); | |
951 | staticpro (&Qsound); | |
2a53558d GM |
952 | Qplay_sound_functions = intern ("play-sound-functions"); |
953 | staticpro (&Qplay_sound_functions); | |
7840ced1 GM |
954 | |
955 | defsubr (&Splay_sound); | |
956 | } | |
957 | ||
958 | ||
959 | void | |
960 | init_sound () | |
961 | { | |
962 | } | |
963 | ||
964 | #endif /* HAVE_SOUND */ |