Commit | Line | Data |
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7840ced1 | 1 | /* sound.c -- sound support. |
68c45bf0 | 2 | Copyright (C) 1998, 1999 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 | ||
28 | #include <lisp.h> | |
29 | #include <fcntl.h> | |
30 | #include <unistd.h> | |
31 | #include <sys/types.h> | |
32 | #include <dispextern.h> | |
33 | #include <errno.h> | |
b5cb1ada | 34 | #include <atimer.h> |
7840ced1 GM |
35 | |
36 | /* FreeBSD has machine/soundcard.h. Voxware sound driver docs mention | |
37 | sys/soundcard.h. So, let's try whatever's there. */ | |
38 | ||
39 | #ifdef HAVE_MACHINE_SOUNDCARD_H | |
40 | #include <machine/soundcard.h> | |
41 | #endif | |
42 | #ifdef HAVE_SYS_SOUNDCARD_H | |
43 | #include <sys/soundcard.h> | |
44 | #endif | |
80fcd514 KR |
45 | #ifdef HAVE_SOUNDCARD_H |
46 | #include <sys/ioctl.h> | |
47 | #include <soundcard.h> | |
48 | #endif | |
49 | ||
50 | #ifndef DEFAULT_SOUND_DEVICE | |
51 | #define DEFAULT_SOUND_DEVICE "/dev/dsp" | |
52 | #endif | |
7840ced1 GM |
53 | |
54 | #define max(X, Y) ((X) > (Y) ? (X) : (Y)) | |
55 | #define min(X, Y) ((X) < (Y) ? (X) : (Y)) | |
56 | #define abs(X) ((X) < 0 ? -(X) : (X)) | |
57 | ||
58 | /* Structure forward declarations. */ | |
59 | ||
d1299cde | 60 | struct sound; |
7840ced1 GM |
61 | struct sound_device; |
62 | ||
63 | /* The file header of RIFF-WAVE files (*.wav). Files are always in | |
64 | little-endian byte-order. */ | |
65 | ||
66 | struct wav_header | |
67 | { | |
68 | u_int32_t magic; | |
69 | u_int32_t length; | |
70 | u_int32_t chunk_type; | |
71 | u_int32_t chunk_format; | |
72 | u_int32_t chunk_length; | |
73 | u_int16_t format; | |
74 | u_int16_t channels; | |
75 | u_int32_t sample_rate; | |
76 | u_int32_t bytes_per_second; | |
77 | u_int16_t sample_size; | |
78 | u_int16_t precision; | |
79 | u_int32_t chunk_data; | |
80 | u_int32_t data_length; | |
81 | }; | |
82 | ||
83 | /* The file header of Sun adio files (*.au). Files are always in | |
84 | big-endian byte-order. */ | |
85 | ||
86 | struct au_header | |
87 | { | |
88 | /* ASCII ".snd" */ | |
89 | u_int32_t magic_number; | |
90 | ||
91 | /* Offset of data part from start of file. Minimum value is 24. */ | |
92 | u_int32_t data_offset; | |
93 | ||
94 | /* Size of data part, 0xffffffff if unknown. */ | |
95 | u_int32_t data_size; | |
96 | ||
97 | /* Data encoding format. | |
98 | 1 8-bit ISDN u-law | |
99 | 2 8-bit linear PCM (REF-PCM) | |
100 | 3 16-bit linear PCM | |
101 | 4 24-bit linear PCM | |
102 | 5 32-bit linear PCM | |
103 | 6 32-bit IEEE floating-point | |
104 | 7 64-bit IEEE floating-point | |
105 | 23 8-bit u-law compressed using CCITT 0.721 ADPCM voice data | |
106 | encoding scheme. */ | |
107 | u_int32_t encoding; | |
108 | ||
109 | /* Number of samples per second. */ | |
110 | u_int32_t sample_rate; | |
111 | ||
112 | /* Number of interleaved channels. */ | |
113 | u_int32_t channels; | |
114 | }; | |
115 | ||
116 | /* Maximum of all sound file headers sizes. */ | |
117 | ||
118 | #define MAX_SOUND_HEADER_BYTES \ | |
119 | max (sizeof (struct wav_header), sizeof (struct au_header)) | |
120 | ||
121 | /* Interface structure for sound devices. */ | |
122 | ||
123 | struct sound_device | |
124 | { | |
125 | /* The name of the device or null meaning use a default device name. */ | |
126 | char *file; | |
127 | ||
128 | /* File descriptor of the device. */ | |
129 | int fd; | |
130 | ||
131 | /* Device-dependent format. */ | |
132 | int format; | |
133 | ||
134 | /* Volume (0..100). Zero means unspecified. */ | |
135 | int volume; | |
136 | ||
137 | /* Sample size. */ | |
138 | int sample_size; | |
139 | ||
140 | /* Sample rate. */ | |
141 | int sample_rate; | |
142 | ||
143 | /* Bytes per second. */ | |
144 | int bps; | |
145 | ||
146 | /* 1 = mono, 2 = stereo, 0 = don't set. */ | |
147 | int channels; | |
148 | ||
149 | /* Open device SD. */ | |
150 | void (* open) P_ ((struct sound_device *sd)); | |
151 | ||
152 | /* Close device SD. */ | |
153 | void (* close) P_ ((struct sound_device *sd)); | |
154 | ||
155 | /* Configure SD accoring to device-dependent parameters. */ | |
156 | void (* configure) P_ ((struct sound_device *device)); | |
157 | ||
d1299cde | 158 | /* Choose a device-dependent format for outputting sound S. */ |
7840ced1 | 159 | void (* choose_format) P_ ((struct sound_device *sd, |
d1299cde | 160 | struct sound *s)); |
7840ced1 GM |
161 | |
162 | /* Write NYBTES bytes from BUFFER to device SD. */ | |
163 | void (* write) P_ ((struct sound_device *sd, char *buffer, int nbytes)); | |
164 | ||
165 | /* A place for devices to store additional data. */ | |
166 | void *data; | |
167 | }; | |
168 | ||
169 | /* An enumerator for each supported sound file type. */ | |
170 | ||
171 | enum sound_type | |
172 | { | |
173 | RIFF, | |
174 | SUN_AUDIO | |
175 | }; | |
176 | ||
177 | /* Interface structure for sound files. */ | |
178 | ||
d1299cde | 179 | struct sound |
7840ced1 GM |
180 | { |
181 | /* The type of the file. */ | |
182 | enum sound_type type; | |
183 | ||
d1299cde | 184 | /* File descriptor of a sound file. */ |
7840ced1 GM |
185 | int fd; |
186 | ||
d1299cde GM |
187 | /* Pointer to sound file header. This contains header_size bytes |
188 | read from the start of a sound file. */ | |
7840ced1 GM |
189 | char *header; |
190 | ||
d1299cde GM |
191 | /* Number of bytes raed from sound file. This is always <= |
192 | MAX_SOUND_HEADER_BYTES. */ | |
193 | int header_size; | |
194 | ||
195 | /* Sound data, if a string. */ | |
196 | Lisp_Object data; | |
197 | ||
198 | /* Play sound file S on device SD. */ | |
199 | void (* play) P_ ((struct sound *s, struct sound_device *sd)); | |
7840ced1 GM |
200 | }; |
201 | ||
202 | /* Indices of attributes in a sound attributes vector. */ | |
203 | ||
204 | enum sound_attr | |
205 | { | |
206 | SOUND_FILE, | |
d1299cde | 207 | SOUND_DATA, |
7840ced1 GM |
208 | SOUND_DEVICE, |
209 | SOUND_VOLUME, | |
210 | SOUND_ATTR_SENTINEL | |
211 | }; | |
212 | ||
213 | /* Symbols. */ | |
214 | ||
d1299cde | 215 | extern Lisp_Object QCfile, QCdata; |
7840ced1 GM |
216 | Lisp_Object QCvolume, QCdevice; |
217 | Lisp_Object Qsound; | |
2a53558d | 218 | Lisp_Object Qplay_sound_functions; |
7840ced1 GM |
219 | |
220 | /* These are set during `play-sound' so that sound_cleanup has | |
221 | access to them. */ | |
222 | ||
d1299cde GM |
223 | struct sound_device *current_sound_device; |
224 | struct sound *current_sound; | |
7840ced1 GM |
225 | |
226 | /* Function prototypes. */ | |
227 | ||
228 | static void vox_open P_ ((struct sound_device *)); | |
229 | static void vox_configure P_ ((struct sound_device *)); | |
230 | static void vox_close P_ ((struct sound_device *sd)); | |
d1299cde | 231 | static void vox_choose_format P_ ((struct sound_device *, struct sound *)); |
7840ced1 GM |
232 | static void vox_init P_ ((struct sound_device *)); |
233 | static void vox_write P_ ((struct sound_device *, char *, int)); | |
234 | static void sound_perror P_ ((char *)); | |
235 | static int parse_sound P_ ((Lisp_Object, Lisp_Object *)); | |
d1299cde | 236 | static void find_sound_type P_ ((struct sound *)); |
7840ced1 GM |
237 | static u_int32_t le2hl P_ ((u_int32_t)); |
238 | static u_int16_t le2hs P_ ((u_int16_t)); | |
239 | static u_int32_t be2hl P_ ((u_int32_t)); | |
d1299cde GM |
240 | static int wav_init P_ ((struct sound *)); |
241 | static void wav_play P_ ((struct sound *, struct sound_device *)); | |
242 | static int au_init P_ ((struct sound *)); | |
243 | static void au_play P_ ((struct sound *, struct sound_device *)); | |
7840ced1 | 244 | |
9680b9d0 GM |
245 | #if 0 /* Currently not used. */ |
246 | static u_int16_t be2hs P_ ((u_int16_t)); | |
247 | #endif | |
248 | ||
7840ced1 GM |
249 | |
250 | \f | |
251 | /*********************************************************************** | |
252 | General | |
253 | ***********************************************************************/ | |
254 | ||
255 | /* Like perror, but signals an error. */ | |
256 | ||
257 | static void | |
258 | sound_perror (msg) | |
259 | char *msg; | |
260 | { | |
261 | error ("%s: %s", msg, strerror (errno)); | |
262 | } | |
263 | ||
264 | ||
265 | /* Parse sound specification SOUND, and fill ATTRS with what is | |
266 | found. Value is non-zero if SOUND Is a valid sound specification. | |
267 | A valid sound specification is a list starting with the symbol | |
268 | `sound'. The rest of the list is a property list which may | |
269 | contain the following key/value pairs: | |
270 | ||
271 | - `:file FILE' | |
272 | ||
273 | FILE is the sound file to play. If it isn't an absolute name, | |
274 | it's searched under `data-directory'. | |
275 | ||
d1299cde GM |
276 | - `:data DATA' |
277 | ||
278 | DATA is a string containing sound data. Either :file or :data | |
279 | may be present, but not both. | |
280 | ||
7840ced1 GM |
281 | - `:device DEVICE' |
282 | ||
283 | DEVICE is the name of the device to play on, e.g. "/dev/dsp2". | |
284 | If not specified, a default device is used. | |
285 | ||
286 | - `:volume VOL' | |
287 | ||
2a53558d GM |
288 | VOL must be an integer in the range [0, 100], or a float in the |
289 | range [0, 1]. */ | |
7840ced1 GM |
290 | |
291 | static int | |
292 | parse_sound (sound, attrs) | |
293 | Lisp_Object sound; | |
294 | Lisp_Object *attrs; | |
295 | { | |
296 | /* SOUND must be a list starting with the symbol `sound'. */ | |
297 | if (!CONSP (sound) || !EQ (XCAR (sound), Qsound)) | |
298 | return 0; | |
299 | ||
300 | sound = XCDR (sound); | |
301 | attrs[SOUND_FILE] = Fplist_get (sound, QCfile); | |
d1299cde | 302 | attrs[SOUND_DATA] = Fplist_get (sound, QCdata); |
7840ced1 GM |
303 | attrs[SOUND_DEVICE] = Fplist_get (sound, QCdevice); |
304 | attrs[SOUND_VOLUME] = Fplist_get (sound, QCvolume); | |
305 | ||
d1299cde GM |
306 | /* File name or data must be specified. */ |
307 | if (!STRINGP (attrs[SOUND_FILE]) | |
308 | && !STRINGP (attrs[SOUND_DATA])) | |
7840ced1 GM |
309 | return 0; |
310 | ||
311 | /* Volume must be in the range 0..100 or unspecified. */ | |
312 | if (!NILP (attrs[SOUND_VOLUME])) | |
313 | { | |
2a53558d GM |
314 | if (INTEGERP (attrs[SOUND_VOLUME])) |
315 | { | |
316 | if (XINT (attrs[SOUND_VOLUME]) < 0 | |
317 | || XINT (attrs[SOUND_VOLUME]) > 100) | |
318 | return 0; | |
319 | } | |
320 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
321 | { | |
322 | if (XFLOAT_DATA (attrs[SOUND_VOLUME]) < 0 | |
323 | || XFLOAT_DATA (attrs[SOUND_VOLUME]) > 1) | |
324 | return 0; | |
325 | } | |
326 | else | |
7840ced1 GM |
327 | return 0; |
328 | } | |
329 | ||
330 | /* Device must be a string or unspecified. */ | |
331 | if (!NILP (attrs[SOUND_DEVICE]) | |
332 | && !STRINGP (attrs[SOUND_DEVICE])) | |
333 | return 0; | |
334 | ||
335 | return 1; | |
336 | } | |
337 | ||
338 | ||
339 | /* Find out the type of the sound file whose file descriptor is FD. | |
d1299cde | 340 | S is the sound file structure to fill in. */ |
7840ced1 GM |
341 | |
342 | static void | |
d1299cde GM |
343 | find_sound_type (s) |
344 | struct sound *s; | |
7840ced1 | 345 | { |
d1299cde GM |
346 | if (!wav_init (s) && !au_init (s)) |
347 | error ("Unknown sound format"); | |
7840ced1 GM |
348 | } |
349 | ||
350 | ||
351 | /* Function installed by play-sound with record_unwind_protect. */ | |
352 | ||
353 | static Lisp_Object | |
354 | sound_cleanup (arg) | |
355 | Lisp_Object arg; | |
356 | { | |
d1299cde | 357 | if (current_sound_device) |
7840ced1 | 358 | { |
66e4690f KR |
359 | if (current_sound_device->close) |
360 | current_sound_device->close (current_sound_device); | |
d1299cde GM |
361 | if (current_sound->fd > 0) |
362 | emacs_close (current_sound->fd); | |
7840ced1 | 363 | } |
3887b449 GM |
364 | |
365 | return Qnil; | |
7840ced1 GM |
366 | } |
367 | ||
368 | ||
369 | DEFUN ("play-sound", Fplay_sound, Splay_sound, 1, 1, 0, | |
2542139e GM |
370 | "Play sound SOUND.\n\ |
371 | SOUND is a list of the form `(sound KEYWORD VALUE...)'.\n\ | |
372 | The following keywords are recognized:\n\ | |
373 | \n\ | |
2a494b2d | 374 | :file FILE.- read sound data from FILE. If FILE isn't an\n\ |
2542139e GM |
375 | absolute file name, it is searched in `data-directory'.\n\ |
376 | \n\ | |
377 | :data DATA - read sound data from string DATA.\n\ | |
378 | \n\ | |
379 | Exactly one of :file or :data must be present.\n\ | |
380 | \n\ | |
381 | :volume VOL - set volume to VOL. VOL must an integer in the\n\ | |
382 | range 0..100 or a float in the range 0..1.0. If not specified,\n\ | |
383 | don't change the volume setting of the sound device.\n\ | |
384 | \n\ | |
385 | :device DEVICE - play sound on DEVICE. If not specified,\n\ | |
386 | a system-dependent default device name is used.") | |
7840ced1 GM |
387 | (sound) |
388 | Lisp_Object sound; | |
389 | { | |
390 | Lisp_Object attrs[SOUND_ATTR_SENTINEL]; | |
7840ced1 GM |
391 | Lisp_Object file; |
392 | struct gcpro gcpro1, gcpro2; | |
7840ced1 | 393 | struct sound_device sd; |
d1299cde | 394 | struct sound s; |
7840ced1 GM |
395 | Lisp_Object args[2]; |
396 | int count = specpdl_ptr - specpdl; | |
397 | ||
398 | file = Qnil; | |
399 | GCPRO2 (sound, file); | |
400 | bzero (&sd, sizeof sd); | |
d1299cde GM |
401 | bzero (&s, sizeof s); |
402 | current_sound_device = &sd; | |
403 | current_sound = &s; | |
7840ced1 | 404 | record_unwind_protect (sound_cleanup, Qnil); |
d1299cde | 405 | s.header = (char *) alloca (MAX_SOUND_HEADER_BYTES); |
7840ced1 GM |
406 | |
407 | /* Parse the sound specification. Give up if it is invalid. */ | |
408 | if (!parse_sound (sound, attrs)) | |
d1299cde GM |
409 | error ("Invalid sound specification"); |
410 | ||
411 | if (STRINGP (attrs[SOUND_FILE])) | |
7840ced1 | 412 | { |
d1299cde GM |
413 | /* Open the sound file. */ |
414 | s.fd = openp (Fcons (Vdata_directory, Qnil), | |
b5cb1ada | 415 | attrs[SOUND_FILE], "", &file, 0); |
d1299cde GM |
416 | if (s.fd < 0) |
417 | sound_perror ("Open sound file"); | |
418 | ||
419 | /* Read the first bytes from the file. */ | |
420 | s.header_size = emacs_read (s.fd, s.header, MAX_SOUND_HEADER_BYTES); | |
421 | if (s.header_size < 0) | |
422 | sound_perror ("Reading sound file header"); | |
423 | } | |
424 | else | |
425 | { | |
426 | s.data = attrs[SOUND_DATA]; | |
427 | bcopy (XSTRING (s.data)->data, s.header, | |
428 | min (MAX_SOUND_HEADER_BYTES, STRING_BYTES (XSTRING (s.data)))); | |
7840ced1 GM |
429 | } |
430 | ||
d1299cde GM |
431 | /* Find out the type of sound. Give up if we can't tell. */ |
432 | find_sound_type (&s); | |
7840ced1 GM |
433 | |
434 | /* Set up a device. */ | |
435 | if (STRINGP (attrs[SOUND_DEVICE])) | |
436 | { | |
437 | int len = XSTRING (attrs[SOUND_DEVICE])->size; | |
438 | sd.file = (char *) alloca (len + 1); | |
439 | strcpy (sd.file, XSTRING (attrs[SOUND_DEVICE])->data); | |
440 | } | |
d1299cde | 441 | |
7840ced1 GM |
442 | if (INTEGERP (attrs[SOUND_VOLUME])) |
443 | sd.volume = XFASTINT (attrs[SOUND_VOLUME]); | |
2a53558d GM |
444 | else if (FLOATP (attrs[SOUND_VOLUME])) |
445 | sd.volume = XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; | |
7840ced1 | 446 | |
2a53558d | 447 | args[0] = Qplay_sound_functions; |
7840ced1 | 448 | args[1] = sound; |
52e386c2 | 449 | Frun_hook_with_args (2, args); |
7840ced1 | 450 | |
d1299cde GM |
451 | /* There is only one type of device we currently support, the VOX |
452 | sound driver. Set up the device interface functions for that | |
453 | device. */ | |
7840ced1 | 454 | vox_init (&sd); |
d1299cde GM |
455 | |
456 | /* Open the device. */ | |
7840ced1 GM |
457 | sd.open (&sd); |
458 | ||
d1299cde GM |
459 | /* Play the sound. */ |
460 | s.play (&s, &sd); | |
461 | ||
462 | /* Close the input file, if any. */ | |
463 | if (!STRINGP (s.data)) | |
464 | { | |
465 | emacs_close (s.fd); | |
466 | s.fd = -1; | |
467 | } | |
468 | ||
469 | /* Close the device. */ | |
7840ced1 | 470 | sd.close (&sd); |
d1299cde GM |
471 | |
472 | /* Clean up. */ | |
473 | current_sound_device = NULL; | |
474 | current_sound = NULL; | |
7840ced1 GM |
475 | UNGCPRO; |
476 | unbind_to (count, Qnil); | |
477 | return Qnil; | |
478 | } | |
479 | ||
480 | \f | |
481 | /*********************************************************************** | |
482 | Byte-order Conversion | |
483 | ***********************************************************************/ | |
484 | ||
485 | /* Convert 32-bit value VALUE which is in little-endian byte-order | |
486 | to host byte-order. */ | |
487 | ||
488 | static u_int32_t | |
489 | le2hl (value) | |
490 | u_int32_t value; | |
491 | { | |
492 | #ifdef WORDS_BIG_ENDIAN | |
493 | unsigned char *p = (unsigned char *) &value; | |
494 | value = p[0] + (p[1] << 8) + (p[2] << 16) + (p[3] << 24); | |
495 | #endif | |
496 | return value; | |
497 | } | |
498 | ||
499 | ||
500 | /* Convert 16-bit value VALUE which is in little-endian byte-order | |
501 | to host byte-order. */ | |
502 | ||
503 | static u_int16_t | |
504 | le2hs (value) | |
505 | u_int16_t value; | |
506 | { | |
507 | #ifdef WORDS_BIG_ENDIAN | |
508 | unsigned char *p = (unsigned char *) &value; | |
509 | value = p[0] + (p[1] << 8); | |
510 | #endif | |
511 | return value; | |
512 | } | |
513 | ||
514 | ||
515 | /* Convert 32-bit value VALUE which is in big-endian byte-order | |
516 | to host byte-order. */ | |
517 | ||
518 | static u_int32_t | |
519 | be2hl (value) | |
520 | u_int32_t value; | |
521 | { | |
522 | #ifndef WORDS_BIG_ENDIAN | |
523 | unsigned char *p = (unsigned char *) &value; | |
524 | value = p[3] + (p[2] << 8) + (p[1] << 16) + (p[0] << 24); | |
525 | #endif | |
526 | return value; | |
527 | } | |
528 | ||
529 | ||
9680b9d0 GM |
530 | #if 0 /* Currently not used. */ |
531 | ||
7840ced1 GM |
532 | /* Convert 16-bit value VALUE which is in big-endian byte-order |
533 | to host byte-order. */ | |
534 | ||
535 | static u_int16_t | |
536 | be2hs (value) | |
537 | u_int16_t value; | |
538 | { | |
539 | #ifndef WORDS_BIG_ENDIAN | |
540 | unsigned char *p = (unsigned char *) &value; | |
541 | value = p[1] + (p[0] << 8); | |
542 | #endif | |
543 | return value; | |
544 | } | |
545 | ||
9680b9d0 | 546 | #endif /* 0 */ |
7840ced1 GM |
547 | |
548 | \f | |
549 | /*********************************************************************** | |
550 | RIFF-WAVE (*.wav) | |
551 | ***********************************************************************/ | |
552 | ||
d1299cde | 553 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
554 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
555 | sound file. If the file is a WAV-format file, set up interface | |
d1299cde | 556 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
557 | Value is non-zero if the file is a WAV file. */ |
558 | ||
559 | static int | |
d1299cde GM |
560 | wav_init (s) |
561 | struct sound *s; | |
7840ced1 | 562 | { |
d1299cde GM |
563 | struct wav_header *header = (struct wav_header *) s->header; |
564 | ||
565 | if (s->header_size < sizeof *header | |
566 | || bcmp (s->header, "RIFF", 4) != 0) | |
7840ced1 GM |
567 | return 0; |
568 | ||
569 | /* WAV files are in little-endian order. Convert the header | |
570 | if on a big-endian machine. */ | |
571 | header->magic = le2hl (header->magic); | |
572 | header->length = le2hl (header->length); | |
573 | header->chunk_type = le2hl (header->chunk_type); | |
574 | header->chunk_format = le2hl (header->chunk_format); | |
575 | header->chunk_length = le2hl (header->chunk_length); | |
576 | header->format = le2hs (header->format); | |
577 | header->channels = le2hs (header->channels); | |
578 | header->sample_rate = le2hl (header->sample_rate); | |
579 | header->bytes_per_second = le2hl (header->bytes_per_second); | |
580 | header->sample_size = le2hs (header->sample_size); | |
581 | header->precision = le2hs (header->precision); | |
582 | header->chunk_data = le2hl (header->chunk_data); | |
583 | header->data_length = le2hl (header->data_length); | |
584 | ||
585 | /* Set up the interface functions for WAV. */ | |
d1299cde GM |
586 | s->type = RIFF; |
587 | s->play = wav_play; | |
7840ced1 GM |
588 | |
589 | return 1; | |
590 | } | |
591 | ||
592 | ||
d1299cde | 593 | /* Play RIFF-WAVE audio file S on sound device SD. */ |
7840ced1 GM |
594 | |
595 | static void | |
d1299cde GM |
596 | wav_play (s, sd) |
597 | struct sound *s; | |
7840ced1 GM |
598 | struct sound_device *sd; |
599 | { | |
d1299cde | 600 | struct wav_header *header = (struct wav_header *) s->header; |
7840ced1 GM |
601 | |
602 | /* Let the device choose a suitable device-dependent format | |
603 | for the file. */ | |
d1299cde | 604 | sd->choose_format (sd, s); |
7840ced1 GM |
605 | |
606 | /* Configure the device. */ | |
607 | sd->sample_size = header->sample_size; | |
608 | sd->sample_rate = header->sample_rate; | |
609 | sd->bps = header->bytes_per_second; | |
610 | sd->channels = header->channels; | |
611 | sd->configure (sd); | |
612 | ||
613 | /* Copy sound data to the device. The WAV file specification is | |
614 | actually more complex. This simple scheme worked with all WAV | |
615 | files I found so far. If someone feels inclined to implement the | |
616 | whole RIFF-WAVE spec, please do. */ | |
d1299cde GM |
617 | if (STRINGP (s->data)) |
618 | sd->write (sd, XSTRING (s->data)->data + sizeof *header, | |
619 | STRING_BYTES (XSTRING (s->data)) - sizeof *header); | |
620 | else | |
621 | { | |
622 | char *buffer; | |
623 | int nbytes; | |
624 | int blksize = 2048; | |
625 | ||
626 | buffer = (char *) alloca (blksize); | |
627 | lseek (s->fd, sizeof *header, SEEK_SET); | |
7840ced1 | 628 | |
d1299cde GM |
629 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) |
630 | sd->write (sd, buffer, nbytes); | |
7840ced1 | 631 | |
d1299cde GM |
632 | if (nbytes < 0) |
633 | sound_perror ("Reading sound file"); | |
634 | } | |
7840ced1 GM |
635 | } |
636 | ||
637 | ||
638 | \f | |
639 | /*********************************************************************** | |
640 | Sun Audio (*.au) | |
641 | ***********************************************************************/ | |
642 | ||
643 | /* Sun audio file encodings. */ | |
644 | ||
645 | enum au_encoding | |
646 | { | |
647 | AU_ENCODING_ULAW_8 = 1, | |
648 | AU_ENCODING_8, | |
649 | AU_ENCODING_16, | |
650 | AU_ENCODING_24, | |
651 | AU_ENCODING_32, | |
652 | AU_ENCODING_IEEE32, | |
653 | AU_ENCODING_IEEE64, | |
654 | AU_COMPRESSED = 23 | |
655 | }; | |
656 | ||
657 | ||
d1299cde | 658 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
659 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
660 | sound file. If the file is a AU-format file, set up interface | |
d1299cde | 661 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
662 | Value is non-zero if the file is an AU file. */ |
663 | ||
664 | static int | |
d1299cde GM |
665 | au_init (s) |
666 | struct sound *s; | |
7840ced1 | 667 | { |
d1299cde | 668 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 | 669 | |
d1299cde GM |
670 | if (s->header_size < sizeof *header |
671 | || bcmp (s->header, ".snd", 4) != 0) | |
7840ced1 GM |
672 | return 0; |
673 | ||
674 | header->magic_number = be2hl (header->magic_number); | |
675 | header->data_offset = be2hl (header->data_offset); | |
676 | header->data_size = be2hl (header->data_size); | |
677 | header->encoding = be2hl (header->encoding); | |
678 | header->sample_rate = be2hl (header->sample_rate); | |
679 | header->channels = be2hl (header->channels); | |
680 | ||
681 | /* Set up the interface functions for AU. */ | |
d1299cde GM |
682 | s->type = SUN_AUDIO; |
683 | s->play = au_play; | |
7840ced1 GM |
684 | |
685 | return 1; | |
686 | } | |
687 | ||
688 | ||
d1299cde | 689 | /* Play Sun audio file S on sound device SD. */ |
7840ced1 GM |
690 | |
691 | static void | |
d1299cde GM |
692 | au_play (s, sd) |
693 | struct sound *s; | |
7840ced1 GM |
694 | struct sound_device *sd; |
695 | { | |
d1299cde | 696 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
697 | |
698 | sd->sample_size = 0; | |
699 | sd->sample_rate = header->sample_rate; | |
700 | sd->bps = 0; | |
701 | sd->channels = header->channels; | |
d1299cde | 702 | sd->choose_format (sd, s); |
7840ced1 | 703 | sd->configure (sd); |
d1299cde GM |
704 | |
705 | if (STRINGP (s->data)) | |
706 | sd->write (sd, XSTRING (s->data)->data + header->data_offset, | |
707 | STRING_BYTES (XSTRING (s->data)) - header->data_offset); | |
708 | else | |
709 | { | |
710 | int blksize = 2048; | |
711 | char *buffer; | |
712 | int nbytes; | |
7840ced1 | 713 | |
d1299cde GM |
714 | /* Seek */ |
715 | lseek (s->fd, header->data_offset, SEEK_SET); | |
7840ced1 | 716 | |
d1299cde GM |
717 | /* Copy sound data to the device. */ |
718 | buffer = (char *) alloca (blksize); | |
719 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) | |
720 | sd->write (sd, buffer, nbytes); | |
721 | ||
722 | if (nbytes < 0) | |
723 | sound_perror ("Reading sound file"); | |
724 | } | |
7840ced1 GM |
725 | } |
726 | ||
727 | ||
728 | \f | |
729 | /*********************************************************************** | |
730 | Voxware Driver Interface | |
731 | ***********************************************************************/ | |
732 | ||
733 | /* This driver is available on GNU/Linux, and the free BSDs. FreeBSD | |
734 | has a compatible own driver aka Luigi's driver. */ | |
735 | ||
736 | ||
737 | /* Open device SD. If SD->file is non-null, open that device, | |
738 | otherwise use a default device name. */ | |
739 | ||
740 | static void | |
741 | vox_open (sd) | |
742 | struct sound_device *sd; | |
743 | { | |
744 | char *file; | |
745 | ||
746 | /* Open the sound device. Default is /dev/dsp. */ | |
747 | if (sd->file) | |
748 | file = sd->file; | |
749 | else | |
80fcd514 | 750 | file = DEFAULT_SOUND_DEVICE; |
7840ced1 | 751 | |
68c45bf0 | 752 | sd->fd = emacs_open (file, O_WRONLY, 0); |
7840ced1 GM |
753 | if (sd->fd < 0) |
754 | sound_perror (file); | |
755 | } | |
756 | ||
757 | ||
758 | /* Configure device SD from parameters in it. */ | |
759 | ||
760 | static void | |
761 | vox_configure (sd) | |
762 | struct sound_device *sd; | |
763 | { | |
28fcb7dc | 764 | int val; |
7840ced1 GM |
765 | |
766 | xassert (sd->fd >= 0); | |
767 | ||
b5cb1ada GM |
768 | turn_on_atimers (0); |
769 | ||
28fcb7dc GM |
770 | val = sd->format; |
771 | if (ioctl (sd->fd, SNDCTL_DSP_SETFMT, &sd->format) < 0 | |
772 | || val != sd->format) | |
773 | sound_perror ("Set sound format"); | |
7840ced1 | 774 | |
28fcb7dc GM |
775 | val = sd->channels != 1; |
776 | if (ioctl (sd->fd, SNDCTL_DSP_STEREO, &val) < 0 | |
777 | || val != (sd->channels != 1)) | |
778 | sound_perror ("Set stereo/mono"); | |
7840ced1 | 779 | |
28fcb7dc GM |
780 | /* I think bps and sampling_rate are the same, but who knows. |
781 | Check this. and use SND_DSP_SPEED for both. */ | |
782 | if (sd->sample_rate > 0) | |
783 | { | |
784 | val = sd->sample_rate; | |
785 | if (ioctl (sd->fd, SNDCTL_DSP_SPEED, &sd->sample_rate) < 0 | |
786 | || val != sd->sample_rate) | |
787 | sound_perror ("Set sound speed"); | |
788 | } | |
7840ced1 | 789 | |
3887b449 GM |
790 | if (sd->volume > 0) |
791 | { | |
792 | int volume = sd->volume & 0xff; | |
793 | volume |= volume << 8; | |
28fcb7dc GM |
794 | /* This may fail if there is no mixer. Ignore the failure. */ |
795 | ioctl (sd->fd, SOUND_MIXER_WRITE_PCM, &volume); | |
3887b449 | 796 | } |
b5cb1ada GM |
797 | |
798 | turn_on_atimers (1); | |
7840ced1 GM |
799 | } |
800 | ||
801 | ||
802 | /* Close device SD if it is open. */ | |
803 | ||
804 | static void | |
805 | vox_close (sd) | |
806 | struct sound_device *sd; | |
807 | { | |
808 | if (sd->fd >= 0) | |
809 | { | |
810 | /* Flush sound data, and reset the device. */ | |
b5cb1ada | 811 | turn_on_atimers (0); |
7840ced1 | 812 | ioctl (sd->fd, SNDCTL_DSP_SYNC, NULL); |
b5cb1ada | 813 | turn_on_atimers (1); |
7840ced1 GM |
814 | |
815 | /* Close the device. */ | |
68c45bf0 | 816 | emacs_close (sd->fd); |
7840ced1 GM |
817 | sd->fd = -1; |
818 | } | |
819 | } | |
820 | ||
821 | ||
d1299cde | 822 | /* Choose device-dependent format for device SD from sound file S. */ |
7840ced1 GM |
823 | |
824 | static void | |
d1299cde | 825 | vox_choose_format (sd, s) |
7840ced1 | 826 | struct sound_device *sd; |
d1299cde | 827 | struct sound *s; |
7840ced1 | 828 | { |
d1299cde | 829 | if (s->type == RIFF) |
7840ced1 | 830 | { |
d1299cde | 831 | struct wav_header *h = (struct wav_header *) s->header; |
7840ced1 GM |
832 | if (h->precision == 8) |
833 | sd->format = AFMT_U8; | |
834 | else if (h->precision == 16) | |
835 | sd->format = AFMT_S16_LE; | |
836 | else | |
837 | error ("Unsupported WAV file format"); | |
838 | } | |
d1299cde | 839 | else if (s->type == SUN_AUDIO) |
7840ced1 | 840 | { |
d1299cde | 841 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
842 | switch (header->encoding) |
843 | { | |
844 | case AU_ENCODING_ULAW_8: | |
845 | case AU_ENCODING_IEEE32: | |
846 | case AU_ENCODING_IEEE64: | |
847 | sd->format = AFMT_MU_LAW; | |
848 | break; | |
849 | ||
850 | case AU_ENCODING_8: | |
851 | case AU_ENCODING_16: | |
852 | case AU_ENCODING_24: | |
853 | case AU_ENCODING_32: | |
854 | sd->format = AFMT_S16_LE; | |
855 | break; | |
856 | ||
857 | default: | |
858 | error ("Unsupported AU file format"); | |
859 | } | |
860 | } | |
861 | else | |
862 | abort (); | |
863 | } | |
864 | ||
865 | ||
866 | /* Initialize device SD. Set up the interface functions in the device | |
867 | structure. */ | |
868 | ||
869 | static void | |
870 | vox_init (sd) | |
871 | struct sound_device *sd; | |
872 | { | |
873 | sd->fd = -1; | |
874 | sd->open = vox_open; | |
875 | sd->close = vox_close; | |
876 | sd->configure = vox_configure; | |
877 | sd->choose_format = vox_choose_format; | |
878 | sd->write = vox_write; | |
879 | } | |
880 | ||
881 | ||
882 | /* Write NBYTES bytes from BUFFER to device SD. */ | |
883 | ||
884 | static void | |
885 | vox_write (sd, buffer, nbytes) | |
886 | struct sound_device *sd; | |
887 | char *buffer; | |
888 | int nbytes; | |
889 | { | |
68c45bf0 | 890 | int nwritten = emacs_write (sd->fd, buffer, nbytes); |
7840ced1 GM |
891 | if (nwritten < 0) |
892 | sound_perror ("Writing to sound device"); | |
893 | } | |
894 | ||
895 | ||
896 | \f | |
897 | /*********************************************************************** | |
898 | Initialization | |
899 | ***********************************************************************/ | |
900 | ||
901 | void | |
902 | syms_of_sound () | |
903 | { | |
904 | QCdevice = intern (":device"); | |
905 | staticpro (&QCdevice); | |
906 | QCvolume = intern (":volume"); | |
907 | staticpro (&QCvolume); | |
908 | Qsound = intern ("sound"); | |
909 | staticpro (&Qsound); | |
2a53558d GM |
910 | Qplay_sound_functions = intern ("play-sound-functions"); |
911 | staticpro (&Qplay_sound_functions); | |
7840ced1 GM |
912 | |
913 | defsubr (&Splay_sound); | |
914 | } | |
915 | ||
916 | ||
917 | void | |
918 | init_sound () | |
919 | { | |
920 | } | |
921 | ||
922 | #endif /* HAVE_SOUND */ |