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 | ||
f60ae425 BK |
24 | /* |
25 | Modified by Ben Key <Bkey1@tampabay.rr.com> to add a partial | |
26 | implementation of the play-sound specification for Windows. | |
27 | ||
28 | Notes: | |
29 | In the Windows implementation of play-sound-internal only the | |
30 | :file and :volume keywords are supported. The :device keyword, | |
31 | if present, is ignored. The :data keyword, if present, will | |
32 | cause an error to be generated. | |
33 | ||
34 | The Windows implementation of play-sound is implemented via the | |
35 | Win32 API functions mciSendString, waveOutGetVolume, and | |
06c3eeed | 36 | waveOutSetVolume which are exported by Winmm.dll. |
f60ae425 BK |
37 | */ |
38 | ||
7840ced1 GM |
39 | #include <config.h> |
40 | ||
41 | #if defined HAVE_SOUND | |
42 | ||
f60ae425 | 43 | /* BEGIN: Common Includes */ |
7840ced1 GM |
44 | #include <fcntl.h> |
45 | #include <unistd.h> | |
46 | #include <sys/types.h> | |
7840ced1 | 47 | #include <errno.h> |
53fab6e2 GM |
48 | #include "lisp.h" |
49 | #include "dispextern.h" | |
50 | #include "atimer.h" | |
bb6e8cee GM |
51 | #include <signal.h> |
52 | #include "syssignal.h" | |
f60ae425 BK |
53 | /* END: Common Includes */ |
54 | ||
55 | ||
56 | /* BEGIN: Non Windows Includes */ | |
57 | #ifndef WINDOWSNT | |
7840ced1 | 58 | |
502150e5 PJ |
59 | #ifndef MSDOS |
60 | #include <sys/ioctl.h> | |
61 | #endif | |
62 | ||
7840ced1 GM |
63 | /* FreeBSD has machine/soundcard.h. Voxware sound driver docs mention |
64 | sys/soundcard.h. So, let's try whatever's there. */ | |
65 | ||
66 | #ifdef HAVE_MACHINE_SOUNDCARD_H | |
67 | #include <machine/soundcard.h> | |
68 | #endif | |
69 | #ifdef HAVE_SYS_SOUNDCARD_H | |
70 | #include <sys/soundcard.h> | |
71 | #endif | |
80fcd514 | 72 | #ifdef HAVE_SOUNDCARD_H |
80fcd514 KR |
73 | #include <soundcard.h> |
74 | #endif | |
f60ae425 BK |
75 | /* END: Non Windows Includes */ |
76 | ||
77 | #else /* WINDOWSNT */ | |
78 | ||
79 | /* BEGIN: Windows Specific Includes */ | |
80 | #include <stdio.h> | |
81 | #include <stdlib.h> | |
82 | #include <string.h> | |
83 | #include <limits.h> | |
84 | #include <windows.h> | |
85 | #include <mmsystem.h> | |
86 | /* END: Windows Specific Includes */ | |
87 | ||
88 | #endif /* WINDOWSNT */ | |
89 | ||
90 | /* BEGIN: Common Definitions */ | |
91 | #define abs(X) ((X) < 0 ? -(X) : (X)) | |
92 | ||
93 | /* Symbols. */ | |
94 | ||
95 | extern Lisp_Object QCfile, QCdata; | |
96 | Lisp_Object QCvolume, QCdevice; | |
97 | Lisp_Object Qsound; | |
98 | Lisp_Object Qplay_sound_functions; | |
99 | ||
100 | /* Indices of attributes in a sound attributes vector. */ | |
101 | ||
102 | enum sound_attr | |
103 | { | |
104 | SOUND_FILE, | |
105 | SOUND_DATA, | |
106 | SOUND_DEVICE, | |
107 | SOUND_VOLUME, | |
108 | SOUND_ATTR_SENTINEL | |
109 | }; | |
110 | ||
111 | static void sound_perror P_ ((char *)); | |
112 | static void sound_warning P_ ((char *)); | |
113 | static int parse_sound P_ ((Lisp_Object, Lisp_Object *)); | |
114 | ||
115 | /* END: Common Definitions */ | |
116 | ||
117 | /* BEGIN: Non Windows Definitions */ | |
118 | #ifndef WINDOWSNT | |
80fcd514 KR |
119 | |
120 | #ifndef DEFAULT_SOUND_DEVICE | |
121 | #define DEFAULT_SOUND_DEVICE "/dev/dsp" | |
122 | #endif | |
7840ced1 | 123 | |
7840ced1 GM |
124 | |
125 | /* Structure forward declarations. */ | |
126 | ||
d1299cde | 127 | struct sound; |
7840ced1 GM |
128 | struct sound_device; |
129 | ||
130 | /* The file header of RIFF-WAVE files (*.wav). Files are always in | |
131 | little-endian byte-order. */ | |
132 | ||
133 | struct wav_header | |
134 | { | |
135 | u_int32_t magic; | |
136 | u_int32_t length; | |
137 | u_int32_t chunk_type; | |
138 | u_int32_t chunk_format; | |
139 | u_int32_t chunk_length; | |
140 | u_int16_t format; | |
141 | u_int16_t channels; | |
142 | u_int32_t sample_rate; | |
143 | u_int32_t bytes_per_second; | |
144 | u_int16_t sample_size; | |
145 | u_int16_t precision; | |
146 | u_int32_t chunk_data; | |
147 | u_int32_t data_length; | |
148 | }; | |
149 | ||
150 | /* The file header of Sun adio files (*.au). Files are always in | |
151 | big-endian byte-order. */ | |
152 | ||
153 | struct au_header | |
154 | { | |
155 | /* ASCII ".snd" */ | |
156 | u_int32_t magic_number; | |
a4ff5d67 | 157 | |
7840ced1 GM |
158 | /* Offset of data part from start of file. Minimum value is 24. */ |
159 | u_int32_t data_offset; | |
a4ff5d67 | 160 | |
7840ced1 GM |
161 | /* Size of data part, 0xffffffff if unknown. */ |
162 | u_int32_t data_size; | |
163 | ||
164 | /* Data encoding format. | |
165 | 1 8-bit ISDN u-law | |
166 | 2 8-bit linear PCM (REF-PCM) | |
167 | 3 16-bit linear PCM | |
168 | 4 24-bit linear PCM | |
169 | 5 32-bit linear PCM | |
170 | 6 32-bit IEEE floating-point | |
171 | 7 64-bit IEEE floating-point | |
172 | 23 8-bit u-law compressed using CCITT 0.721 ADPCM voice data | |
173 | encoding scheme. */ | |
174 | u_int32_t encoding; | |
175 | ||
176 | /* Number of samples per second. */ | |
177 | u_int32_t sample_rate; | |
178 | ||
179 | /* Number of interleaved channels. */ | |
180 | u_int32_t channels; | |
181 | }; | |
182 | ||
183 | /* Maximum of all sound file headers sizes. */ | |
184 | ||
185 | #define MAX_SOUND_HEADER_BYTES \ | |
186 | max (sizeof (struct wav_header), sizeof (struct au_header)) | |
187 | ||
188 | /* Interface structure for sound devices. */ | |
189 | ||
190 | struct sound_device | |
191 | { | |
192 | /* The name of the device or null meaning use a default device name. */ | |
193 | char *file; | |
194 | ||
195 | /* File descriptor of the device. */ | |
196 | int fd; | |
197 | ||
198 | /* Device-dependent format. */ | |
199 | int format; | |
200 | ||
201 | /* Volume (0..100). Zero means unspecified. */ | |
202 | int volume; | |
203 | ||
204 | /* Sample size. */ | |
205 | int sample_size; | |
206 | ||
207 | /* Sample rate. */ | |
208 | int sample_rate; | |
209 | ||
210 | /* Bytes per second. */ | |
211 | int bps; | |
212 | ||
213 | /* 1 = mono, 2 = stereo, 0 = don't set. */ | |
214 | int channels; | |
a4ff5d67 | 215 | |
7840ced1 GM |
216 | /* Open device SD. */ |
217 | void (* open) P_ ((struct sound_device *sd)); | |
218 | ||
219 | /* Close device SD. */ | |
220 | void (* close) P_ ((struct sound_device *sd)); | |
221 | ||
222 | /* Configure SD accoring to device-dependent parameters. */ | |
223 | void (* configure) P_ ((struct sound_device *device)); | |
a4ff5d67 | 224 | |
d1299cde | 225 | /* Choose a device-dependent format for outputting sound S. */ |
7840ced1 | 226 | void (* choose_format) P_ ((struct sound_device *sd, |
d1299cde | 227 | struct sound *s)); |
7840ced1 GM |
228 | |
229 | /* Write NYBTES bytes from BUFFER to device SD. */ | |
dca0fc1c KR |
230 | void (* write) P_ ((struct sound_device *sd, const char *buffer, |
231 | int nbytes)); | |
7840ced1 GM |
232 | |
233 | /* A place for devices to store additional data. */ | |
234 | void *data; | |
235 | }; | |
236 | ||
237 | /* An enumerator for each supported sound file type. */ | |
238 | ||
239 | enum sound_type | |
240 | { | |
241 | RIFF, | |
242 | SUN_AUDIO | |
243 | }; | |
244 | ||
245 | /* Interface structure for sound files. */ | |
246 | ||
d1299cde | 247 | struct sound |
7840ced1 GM |
248 | { |
249 | /* The type of the file. */ | |
250 | enum sound_type type; | |
251 | ||
d1299cde | 252 | /* File descriptor of a sound file. */ |
7840ced1 GM |
253 | int fd; |
254 | ||
d1299cde GM |
255 | /* Pointer to sound file header. This contains header_size bytes |
256 | read from the start of a sound file. */ | |
7840ced1 GM |
257 | char *header; |
258 | ||
d1299cde GM |
259 | /* Number of bytes raed from sound file. This is always <= |
260 | MAX_SOUND_HEADER_BYTES. */ | |
261 | int header_size; | |
262 | ||
263 | /* Sound data, if a string. */ | |
264 | Lisp_Object data; | |
265 | ||
266 | /* Play sound file S on device SD. */ | |
a4ff5d67 | 267 | void (* play) P_ ((struct sound *s, struct sound_device *sd)); |
7840ced1 GM |
268 | }; |
269 | ||
14e415e7 | 270 | /* These are set during `play-sound-internal' so that sound_cleanup has |
7840ced1 GM |
271 | access to them. */ |
272 | ||
d1299cde GM |
273 | struct sound_device *current_sound_device; |
274 | struct sound *current_sound; | |
7840ced1 GM |
275 | |
276 | /* Function prototypes. */ | |
277 | ||
278 | static void vox_open P_ ((struct sound_device *)); | |
279 | static void vox_configure P_ ((struct sound_device *)); | |
280 | static void vox_close P_ ((struct sound_device *sd)); | |
d1299cde | 281 | static void vox_choose_format P_ ((struct sound_device *, struct sound *)); |
7840ced1 | 282 | static void vox_init P_ ((struct sound_device *)); |
dca0fc1c | 283 | static void vox_write P_ ((struct sound_device *, const char *, int)); |
d1299cde | 284 | static void find_sound_type P_ ((struct sound *)); |
7840ced1 GM |
285 | static u_int32_t le2hl P_ ((u_int32_t)); |
286 | static u_int16_t le2hs P_ ((u_int16_t)); | |
287 | static u_int32_t be2hl P_ ((u_int32_t)); | |
d1299cde GM |
288 | static int wav_init P_ ((struct sound *)); |
289 | static void wav_play P_ ((struct sound *, struct sound_device *)); | |
290 | static int au_init P_ ((struct sound *)); | |
291 | static void au_play P_ ((struct sound *, struct sound_device *)); | |
7840ced1 | 292 | |
9680b9d0 GM |
293 | #if 0 /* Currently not used. */ |
294 | static u_int16_t be2hs P_ ((u_int16_t)); | |
295 | #endif | |
296 | ||
f60ae425 BK |
297 | /* END: Non Windows Definitions */ |
298 | #else /* WINDOWSNT */ | |
299 | ||
300 | /* BEGIN: Windows Specific Definitions */ | |
301 | static int do_play_sound P_ ((const char *, unsigned long)); | |
302 | /* | |
303 | END: Windows Specific Definitions */ | |
304 | #endif /* WINDOWSNT */ | |
7840ced1 GM |
305 | |
306 | \f | |
307 | /*********************************************************************** | |
308 | General | |
309 | ***********************************************************************/ | |
310 | ||
f60ae425 BK |
311 | /* BEGIN: Common functions */ |
312 | ||
7840ced1 GM |
313 | /* Like perror, but signals an error. */ |
314 | ||
315 | static void | |
316 | sound_perror (msg) | |
317 | char *msg; | |
318 | { | |
3297e2a1 AS |
319 | int saved_errno = errno; |
320 | ||
62725a92 GM |
321 | turn_on_atimers (1); |
322 | #ifdef SIGIO | |
323 | sigunblock (sigmask (SIGIO)); | |
324 | #endif | |
3297e2a1 AS |
325 | if (saved_errno != 0) |
326 | error ("%s: %s", msg, strerror (saved_errno)); | |
62725a92 GM |
327 | else |
328 | error ("%s", msg); | |
329 | } | |
330 | ||
331 | ||
332 | /* Display a warning message. */ | |
333 | ||
334 | static void | |
335 | sound_warning (msg) | |
336 | char *msg; | |
337 | { | |
338 | message (msg); | |
7840ced1 GM |
339 | } |
340 | ||
341 | ||
342 | /* Parse sound specification SOUND, and fill ATTRS with what is | |
343 | found. Value is non-zero if SOUND Is a valid sound specification. | |
344 | A valid sound specification is a list starting with the symbol | |
345 | `sound'. The rest of the list is a property list which may | |
346 | contain the following key/value pairs: | |
347 | ||
348 | - `:file FILE' | |
349 | ||
350 | FILE is the sound file to play. If it isn't an absolute name, | |
351 | it's searched under `data-directory'. | |
352 | ||
d1299cde GM |
353 | - `:data DATA' |
354 | ||
355 | DATA is a string containing sound data. Either :file or :data | |
356 | may be present, but not both. | |
357 | ||
7840ced1 GM |
358 | - `:device DEVICE' |
359 | ||
360 | DEVICE is the name of the device to play on, e.g. "/dev/dsp2". | |
361 | If not specified, a default device is used. | |
362 | ||
363 | - `:volume VOL' | |
364 | ||
2a53558d GM |
365 | VOL must be an integer in the range [0, 100], or a float in the |
366 | range [0, 1]. */ | |
7840ced1 GM |
367 | |
368 | static int | |
369 | parse_sound (sound, attrs) | |
370 | Lisp_Object sound; | |
371 | Lisp_Object *attrs; | |
372 | { | |
373 | /* SOUND must be a list starting with the symbol `sound'. */ | |
374 | if (!CONSP (sound) || !EQ (XCAR (sound), Qsound)) | |
375 | return 0; | |
376 | ||
377 | sound = XCDR (sound); | |
378 | attrs[SOUND_FILE] = Fplist_get (sound, QCfile); | |
d1299cde | 379 | attrs[SOUND_DATA] = Fplist_get (sound, QCdata); |
7840ced1 GM |
380 | attrs[SOUND_DEVICE] = Fplist_get (sound, QCdevice); |
381 | attrs[SOUND_VOLUME] = Fplist_get (sound, QCvolume); | |
382 | ||
f60ae425 | 383 | #ifndef WINDOWSNT |
d1299cde GM |
384 | /* File name or data must be specified. */ |
385 | if (!STRINGP (attrs[SOUND_FILE]) | |
386 | && !STRINGP (attrs[SOUND_DATA])) | |
7840ced1 | 387 | return 0; |
f60ae425 BK |
388 | #else /* WINDOWSNT */ |
389 | /* | |
390 | Data is not supported in Windows. Therefore a | |
391 | File name MUST be supplied. | |
392 | */ | |
393 | if (!STRINGP (attrs[SOUND_FILE])) | |
394 | { | |
395 | return 0; | |
396 | } | |
397 | #endif /* WINDOWSNT */ | |
7840ced1 GM |
398 | |
399 | /* Volume must be in the range 0..100 or unspecified. */ | |
400 | if (!NILP (attrs[SOUND_VOLUME])) | |
401 | { | |
2a53558d GM |
402 | if (INTEGERP (attrs[SOUND_VOLUME])) |
403 | { | |
404 | if (XINT (attrs[SOUND_VOLUME]) < 0 | |
405 | || XINT (attrs[SOUND_VOLUME]) > 100) | |
406 | return 0; | |
407 | } | |
408 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
409 | { | |
410 | if (XFLOAT_DATA (attrs[SOUND_VOLUME]) < 0 | |
411 | || XFLOAT_DATA (attrs[SOUND_VOLUME]) > 1) | |
412 | return 0; | |
413 | } | |
414 | else | |
7840ced1 GM |
415 | return 0; |
416 | } | |
417 | ||
f60ae425 | 418 | #ifndef WINDOWSNT |
7840ced1 GM |
419 | /* Device must be a string or unspecified. */ |
420 | if (!NILP (attrs[SOUND_DEVICE]) | |
421 | && !STRINGP (attrs[SOUND_DEVICE])) | |
422 | return 0; | |
f60ae425 BK |
423 | #endif /* WINDOWSNT */ |
424 | /* | |
425 | Since device is ignored in Windows, it does not matter | |
426 | what it is. | |
427 | */ | |
7840ced1 GM |
428 | return 1; |
429 | } | |
430 | ||
f60ae425 BK |
431 | /* END: Common functions */ |
432 | ||
433 | /* BEGIN: Non Windows functions */ | |
434 | #ifndef WINDOWSNT | |
7840ced1 GM |
435 | |
436 | /* Find out the type of the sound file whose file descriptor is FD. | |
d1299cde | 437 | S is the sound file structure to fill in. */ |
7840ced1 GM |
438 | |
439 | static void | |
d1299cde GM |
440 | find_sound_type (s) |
441 | struct sound *s; | |
7840ced1 | 442 | { |
d1299cde GM |
443 | if (!wav_init (s) && !au_init (s)) |
444 | error ("Unknown sound format"); | |
7840ced1 GM |
445 | } |
446 | ||
447 | ||
14e415e7 | 448 | /* Function installed by play-sound-internal with record_unwind_protect. */ |
7840ced1 GM |
449 | |
450 | static Lisp_Object | |
451 | sound_cleanup (arg) | |
452 | Lisp_Object arg; | |
453 | { | |
d1299cde | 454 | if (current_sound_device) |
7840ced1 | 455 | { |
66e4690f KR |
456 | if (current_sound_device->close) |
457 | current_sound_device->close (current_sound_device); | |
d1299cde GM |
458 | if (current_sound->fd > 0) |
459 | emacs_close (current_sound->fd); | |
7840ced1 | 460 | } |
3887b449 GM |
461 | |
462 | return Qnil; | |
7840ced1 GM |
463 | } |
464 | ||
7840ced1 GM |
465 | /*********************************************************************** |
466 | Byte-order Conversion | |
467 | ***********************************************************************/ | |
468 | ||
469 | /* Convert 32-bit value VALUE which is in little-endian byte-order | |
470 | to host byte-order. */ | |
471 | ||
472 | static u_int32_t | |
473 | le2hl (value) | |
474 | u_int32_t value; | |
475 | { | |
476 | #ifdef WORDS_BIG_ENDIAN | |
477 | unsigned char *p = (unsigned char *) &value; | |
478 | value = p[0] + (p[1] << 8) + (p[2] << 16) + (p[3] << 24); | |
479 | #endif | |
480 | return value; | |
481 | } | |
482 | ||
483 | ||
484 | /* Convert 16-bit value VALUE which is in little-endian byte-order | |
485 | to host byte-order. */ | |
486 | ||
487 | static u_int16_t | |
488 | le2hs (value) | |
489 | u_int16_t value; | |
490 | { | |
491 | #ifdef WORDS_BIG_ENDIAN | |
492 | unsigned char *p = (unsigned char *) &value; | |
493 | value = p[0] + (p[1] << 8); | |
494 | #endif | |
495 | return value; | |
496 | } | |
497 | ||
498 | ||
499 | /* Convert 32-bit value VALUE which is in big-endian byte-order | |
500 | to host byte-order. */ | |
501 | ||
502 | static u_int32_t | |
503 | be2hl (value) | |
504 | u_int32_t value; | |
505 | { | |
506 | #ifndef WORDS_BIG_ENDIAN | |
507 | unsigned char *p = (unsigned char *) &value; | |
508 | value = p[3] + (p[2] << 8) + (p[1] << 16) + (p[0] << 24); | |
509 | #endif | |
510 | return value; | |
511 | } | |
512 | ||
513 | ||
9680b9d0 GM |
514 | #if 0 /* Currently not used. */ |
515 | ||
7840ced1 GM |
516 | /* Convert 16-bit value VALUE which is in big-endian byte-order |
517 | to host byte-order. */ | |
518 | ||
519 | static u_int16_t | |
520 | be2hs (value) | |
521 | u_int16_t value; | |
522 | { | |
523 | #ifndef WORDS_BIG_ENDIAN | |
524 | unsigned char *p = (unsigned char *) &value; | |
525 | value = p[1] + (p[0] << 8); | |
526 | #endif | |
527 | return value; | |
528 | } | |
529 | ||
9680b9d0 | 530 | #endif /* 0 */ |
7840ced1 | 531 | |
7840ced1 GM |
532 | /*********************************************************************** |
533 | RIFF-WAVE (*.wav) | |
534 | ***********************************************************************/ | |
535 | ||
d1299cde | 536 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
537 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
538 | sound file. If the file is a WAV-format file, set up interface | |
d1299cde | 539 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
540 | Value is non-zero if the file is a WAV file. */ |
541 | ||
542 | static int | |
d1299cde GM |
543 | wav_init (s) |
544 | struct sound *s; | |
7840ced1 | 545 | { |
d1299cde GM |
546 | struct wav_header *header = (struct wav_header *) s->header; |
547 | ||
548 | if (s->header_size < sizeof *header | |
549 | || bcmp (s->header, "RIFF", 4) != 0) | |
7840ced1 GM |
550 | return 0; |
551 | ||
552 | /* WAV files are in little-endian order. Convert the header | |
553 | if on a big-endian machine. */ | |
554 | header->magic = le2hl (header->magic); | |
555 | header->length = le2hl (header->length); | |
556 | header->chunk_type = le2hl (header->chunk_type); | |
557 | header->chunk_format = le2hl (header->chunk_format); | |
558 | header->chunk_length = le2hl (header->chunk_length); | |
559 | header->format = le2hs (header->format); | |
560 | header->channels = le2hs (header->channels); | |
561 | header->sample_rate = le2hl (header->sample_rate); | |
562 | header->bytes_per_second = le2hl (header->bytes_per_second); | |
563 | header->sample_size = le2hs (header->sample_size); | |
564 | header->precision = le2hs (header->precision); | |
565 | header->chunk_data = le2hl (header->chunk_data); | |
566 | header->data_length = le2hl (header->data_length); | |
567 | ||
568 | /* Set up the interface functions for WAV. */ | |
d1299cde GM |
569 | s->type = RIFF; |
570 | s->play = wav_play; | |
7840ced1 GM |
571 | |
572 | return 1; | |
a4ff5d67 | 573 | } |
7840ced1 GM |
574 | |
575 | ||
d1299cde | 576 | /* Play RIFF-WAVE audio file S on sound device SD. */ |
7840ced1 GM |
577 | |
578 | static void | |
d1299cde GM |
579 | wav_play (s, sd) |
580 | struct sound *s; | |
7840ced1 GM |
581 | struct sound_device *sd; |
582 | { | |
d1299cde | 583 | struct wav_header *header = (struct wav_header *) s->header; |
7840ced1 GM |
584 | |
585 | /* Let the device choose a suitable device-dependent format | |
586 | for the file. */ | |
d1299cde | 587 | sd->choose_format (sd, s); |
a4ff5d67 | 588 | |
7840ced1 GM |
589 | /* Configure the device. */ |
590 | sd->sample_size = header->sample_size; | |
591 | sd->sample_rate = header->sample_rate; | |
592 | sd->bps = header->bytes_per_second; | |
593 | sd->channels = header->channels; | |
594 | sd->configure (sd); | |
595 | ||
596 | /* Copy sound data to the device. The WAV file specification is | |
597 | actually more complex. This simple scheme worked with all WAV | |
598 | files I found so far. If someone feels inclined to implement the | |
599 | whole RIFF-WAVE spec, please do. */ | |
d1299cde | 600 | if (STRINGP (s->data)) |
d5db4077 KR |
601 | sd->write (sd, SDATA (s->data) + sizeof *header, |
602 | SBYTES (s->data) - sizeof *header); | |
d1299cde GM |
603 | else |
604 | { | |
605 | char *buffer; | |
606 | int nbytes; | |
607 | int blksize = 2048; | |
a4ff5d67 | 608 | |
d1299cde GM |
609 | buffer = (char *) alloca (blksize); |
610 | lseek (s->fd, sizeof *header, SEEK_SET); | |
a4ff5d67 | 611 | |
d1299cde GM |
612 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) |
613 | sd->write (sd, buffer, nbytes); | |
7840ced1 | 614 | |
d1299cde | 615 | if (nbytes < 0) |
62725a92 | 616 | sound_perror ("Error reading sound file"); |
d1299cde | 617 | } |
7840ced1 GM |
618 | } |
619 | ||
620 | ||
7840ced1 GM |
621 | /*********************************************************************** |
622 | Sun Audio (*.au) | |
623 | ***********************************************************************/ | |
624 | ||
a4ff5d67 | 625 | /* Sun audio file encodings. */ |
7840ced1 GM |
626 | |
627 | enum au_encoding | |
628 | { | |
629 | AU_ENCODING_ULAW_8 = 1, | |
630 | AU_ENCODING_8, | |
631 | AU_ENCODING_16, | |
632 | AU_ENCODING_24, | |
633 | AU_ENCODING_32, | |
634 | AU_ENCODING_IEEE32, | |
635 | AU_ENCODING_IEEE64, | |
636 | AU_COMPRESSED = 23 | |
637 | }; | |
638 | ||
639 | ||
d1299cde | 640 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
641 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
642 | sound file. If the file is a AU-format file, set up interface | |
d1299cde | 643 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
644 | Value is non-zero if the file is an AU file. */ |
645 | ||
646 | static int | |
d1299cde GM |
647 | au_init (s) |
648 | struct sound *s; | |
7840ced1 | 649 | { |
d1299cde | 650 | struct au_header *header = (struct au_header *) s->header; |
a4ff5d67 | 651 | |
d1299cde GM |
652 | if (s->header_size < sizeof *header |
653 | || bcmp (s->header, ".snd", 4) != 0) | |
7840ced1 | 654 | return 0; |
a4ff5d67 | 655 | |
7840ced1 GM |
656 | header->magic_number = be2hl (header->magic_number); |
657 | header->data_offset = be2hl (header->data_offset); | |
658 | header->data_size = be2hl (header->data_size); | |
659 | header->encoding = be2hl (header->encoding); | |
660 | header->sample_rate = be2hl (header->sample_rate); | |
661 | header->channels = be2hl (header->channels); | |
a4ff5d67 | 662 | |
7840ced1 | 663 | /* Set up the interface functions for AU. */ |
d1299cde GM |
664 | s->type = SUN_AUDIO; |
665 | s->play = au_play; | |
7840ced1 GM |
666 | |
667 | return 1; | |
668 | } | |
669 | ||
670 | ||
d1299cde | 671 | /* Play Sun audio file S on sound device SD. */ |
7840ced1 GM |
672 | |
673 | static void | |
d1299cde GM |
674 | au_play (s, sd) |
675 | struct sound *s; | |
7840ced1 GM |
676 | struct sound_device *sd; |
677 | { | |
d1299cde | 678 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
679 | |
680 | sd->sample_size = 0; | |
681 | sd->sample_rate = header->sample_rate; | |
682 | sd->bps = 0; | |
683 | sd->channels = header->channels; | |
d1299cde | 684 | sd->choose_format (sd, s); |
7840ced1 | 685 | sd->configure (sd); |
d1299cde GM |
686 | |
687 | if (STRINGP (s->data)) | |
d5db4077 KR |
688 | sd->write (sd, SDATA (s->data) + header->data_offset, |
689 | SBYTES (s->data) - header->data_offset); | |
d1299cde GM |
690 | else |
691 | { | |
692 | int blksize = 2048; | |
693 | char *buffer; | |
694 | int nbytes; | |
a4ff5d67 | 695 | |
d1299cde GM |
696 | /* Seek */ |
697 | lseek (s->fd, header->data_offset, SEEK_SET); | |
a4ff5d67 | 698 | |
d1299cde GM |
699 | /* Copy sound data to the device. */ |
700 | buffer = (char *) alloca (blksize); | |
701 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) | |
702 | sd->write (sd, buffer, nbytes); | |
a4ff5d67 | 703 | |
d1299cde | 704 | if (nbytes < 0) |
62725a92 | 705 | sound_perror ("Error reading sound file"); |
d1299cde | 706 | } |
7840ced1 GM |
707 | } |
708 | ||
709 | ||
7840ced1 GM |
710 | /*********************************************************************** |
711 | Voxware Driver Interface | |
712 | ***********************************************************************/ | |
713 | ||
714 | /* This driver is available on GNU/Linux, and the free BSDs. FreeBSD | |
715 | has a compatible own driver aka Luigi's driver. */ | |
716 | ||
717 | ||
718 | /* Open device SD. If SD->file is non-null, open that device, | |
719 | otherwise use a default device name. */ | |
720 | ||
721 | static void | |
722 | vox_open (sd) | |
723 | struct sound_device *sd; | |
724 | { | |
725 | char *file; | |
a4ff5d67 | 726 | |
7840ced1 GM |
727 | /* Open the sound device. Default is /dev/dsp. */ |
728 | if (sd->file) | |
729 | file = sd->file; | |
730 | else | |
80fcd514 | 731 | file = DEFAULT_SOUND_DEVICE; |
a4ff5d67 | 732 | |
68c45bf0 | 733 | sd->fd = emacs_open (file, O_WRONLY, 0); |
7840ced1 GM |
734 | if (sd->fd < 0) |
735 | sound_perror (file); | |
736 | } | |
737 | ||
738 | ||
739 | /* Configure device SD from parameters in it. */ | |
740 | ||
741 | static void | |
742 | vox_configure (sd) | |
743 | struct sound_device *sd; | |
744 | { | |
28fcb7dc | 745 | int val; |
a4ff5d67 | 746 | |
7840ced1 GM |
747 | xassert (sd->fd >= 0); |
748 | ||
bb6e8cee GM |
749 | /* On GNU/Linux, it seems that the device driver doesn't like to be |
750 | interrupted by a signal. Block the ones we know to cause | |
751 | troubles. */ | |
b5cb1ada | 752 | turn_on_atimers (0); |
bb6e8cee GM |
753 | #ifdef SIGIO |
754 | sigblock (sigmask (SIGIO)); | |
755 | #endif | |
b5cb1ada | 756 | |
28fcb7dc GM |
757 | val = sd->format; |
758 | if (ioctl (sd->fd, SNDCTL_DSP_SETFMT, &sd->format) < 0 | |
759 | || val != sd->format) | |
62725a92 | 760 | sound_perror ("Could not set sound format"); |
7840ced1 | 761 | |
28fcb7dc GM |
762 | val = sd->channels != 1; |
763 | if (ioctl (sd->fd, SNDCTL_DSP_STEREO, &val) < 0 | |
764 | || val != (sd->channels != 1)) | |
62725a92 | 765 | sound_perror ("Could not set stereo/mono"); |
7840ced1 | 766 | |
28fcb7dc GM |
767 | /* I think bps and sampling_rate are the same, but who knows. |
768 | Check this. and use SND_DSP_SPEED for both. */ | |
769 | if (sd->sample_rate > 0) | |
770 | { | |
771 | val = sd->sample_rate; | |
62725a92 GM |
772 | if (ioctl (sd->fd, SNDCTL_DSP_SPEED, &sd->sample_rate) < 0) |
773 | sound_perror ("Could not set sound speed"); | |
774 | else if (val != sd->sample_rate) | |
775 | sound_warning ("Could not set sample rate"); | |
28fcb7dc | 776 | } |
7840ced1 | 777 | |
3887b449 GM |
778 | if (sd->volume > 0) |
779 | { | |
780 | int volume = sd->volume & 0xff; | |
781 | volume |= volume << 8; | |
28fcb7dc GM |
782 | /* This may fail if there is no mixer. Ignore the failure. */ |
783 | ioctl (sd->fd, SOUND_MIXER_WRITE_PCM, &volume); | |
3887b449 | 784 | } |
a4ff5d67 | 785 | |
b5cb1ada | 786 | turn_on_atimers (1); |
bb6e8cee GM |
787 | #ifdef SIGIO |
788 | sigunblock (sigmask (SIGIO)); | |
789 | #endif | |
7840ced1 GM |
790 | } |
791 | ||
792 | ||
793 | /* Close device SD if it is open. */ | |
794 | ||
795 | static void | |
796 | vox_close (sd) | |
797 | struct sound_device *sd; | |
798 | { | |
799 | if (sd->fd >= 0) | |
800 | { | |
bb6e8cee GM |
801 | /* On GNU/Linux, it seems that the device driver doesn't like to |
802 | be interrupted by a signal. Block the ones we know to cause | |
803 | troubles. */ | |
804 | #ifdef SIGIO | |
805 | sigblock (sigmask (SIGIO)); | |
806 | #endif | |
b5cb1ada | 807 | turn_on_atimers (0); |
a4ff5d67 | 808 | |
bb6e8cee | 809 | /* Flush sound data, and reset the device. */ |
7840ced1 | 810 | ioctl (sd->fd, SNDCTL_DSP_SYNC, NULL); |
a4ff5d67 | 811 | |
b5cb1ada | 812 | turn_on_atimers (1); |
bb6e8cee GM |
813 | #ifdef SIGIO |
814 | sigunblock (sigmask (SIGIO)); | |
815 | #endif | |
7840ced1 GM |
816 | |
817 | /* Close the device. */ | |
68c45bf0 | 818 | emacs_close (sd->fd); |
7840ced1 GM |
819 | sd->fd = -1; |
820 | } | |
821 | } | |
822 | ||
823 | ||
d1299cde | 824 | /* Choose device-dependent format for device SD from sound file S. */ |
7840ced1 GM |
825 | |
826 | static void | |
d1299cde | 827 | vox_choose_format (sd, s) |
7840ced1 | 828 | struct sound_device *sd; |
d1299cde | 829 | struct sound *s; |
7840ced1 | 830 | { |
d1299cde | 831 | if (s->type == RIFF) |
7840ced1 | 832 | { |
d1299cde | 833 | struct wav_header *h = (struct wav_header *) s->header; |
7840ced1 GM |
834 | if (h->precision == 8) |
835 | sd->format = AFMT_U8; | |
836 | else if (h->precision == 16) | |
837 | sd->format = AFMT_S16_LE; | |
838 | else | |
839 | error ("Unsupported WAV file format"); | |
840 | } | |
d1299cde | 841 | else if (s->type == SUN_AUDIO) |
7840ced1 | 842 | { |
d1299cde | 843 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
844 | switch (header->encoding) |
845 | { | |
846 | case AU_ENCODING_ULAW_8: | |
847 | case AU_ENCODING_IEEE32: | |
848 | case AU_ENCODING_IEEE64: | |
849 | sd->format = AFMT_MU_LAW; | |
850 | break; | |
a4ff5d67 | 851 | |
7840ced1 GM |
852 | case AU_ENCODING_8: |
853 | case AU_ENCODING_16: | |
854 | case AU_ENCODING_24: | |
855 | case AU_ENCODING_32: | |
856 | sd->format = AFMT_S16_LE; | |
857 | break; | |
858 | ||
859 | default: | |
860 | error ("Unsupported AU file format"); | |
861 | } | |
862 | } | |
863 | else | |
864 | abort (); | |
865 | } | |
866 | ||
867 | ||
868 | /* Initialize device SD. Set up the interface functions in the device | |
869 | structure. */ | |
870 | ||
871 | static void | |
872 | vox_init (sd) | |
873 | struct sound_device *sd; | |
874 | { | |
875 | sd->fd = -1; | |
876 | sd->open = vox_open; | |
877 | sd->close = vox_close; | |
878 | sd->configure = vox_configure; | |
879 | sd->choose_format = vox_choose_format; | |
880 | sd->write = vox_write; | |
881 | } | |
882 | ||
7840ced1 GM |
883 | /* Write NBYTES bytes from BUFFER to device SD. */ |
884 | ||
885 | static void | |
886 | vox_write (sd, buffer, nbytes) | |
887 | struct sound_device *sd; | |
dca0fc1c | 888 | const char *buffer; |
7840ced1 GM |
889 | int nbytes; |
890 | { | |
68c45bf0 | 891 | int nwritten = emacs_write (sd->fd, buffer, nbytes); |
7840ced1 | 892 | if (nwritten < 0) |
62725a92 | 893 | sound_perror ("Error writing to sound device"); |
7840ced1 GM |
894 | } |
895 | ||
f60ae425 BK |
896 | /* END: Non Windows functions */ |
897 | #else /* WINDOWSNT */ | |
898 | ||
899 | /* BEGIN: Windows specific functions */ | |
900 | ||
901 | static int | |
902 | do_play_sound (psz_file, ui_volume) | |
06c3eeed JB |
903 | const char *psz_file; |
904 | unsigned long ui_volume; | |
f60ae425 | 905 | { |
06c3eeed JB |
906 | int i_result = 0; |
907 | MCIERROR mci_error = 0; | |
908 | char sz_cmd_buf[520] = {0}; | |
909 | char sz_ret_buf[520] = {0}; | |
910 | MMRESULT mm_result = MMSYSERR_NOERROR; | |
911 | unsigned long ui_volume_org = 0; | |
912 | BOOL b_reset_volume = FALSE; | |
913 | ||
f60ae425 BK |
914 | memset (sz_cmd_buf, 0, sizeof(sz_cmd_buf)); |
915 | memset (sz_ret_buf, 0, sizeof(sz_ret_buf)); | |
06c3eeed JB |
916 | sprintf (sz_cmd_buf, |
917 | "open \"%s\" alias GNUEmacs_PlaySound_Device wait", | |
918 | psz_file); | |
919 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, 520, NULL); | |
f60ae425 BK |
920 | if (mci_error != 0) |
921 | { | |
06c3eeed JB |
922 | sound_warning ("The open mciSendString command failed to open\n" |
923 | "the specified sound file"); | |
924 | i_result = (int) mci_error; | |
f60ae425 BK |
925 | return i_result; |
926 | } | |
927 | if ((ui_volume > 0) && (ui_volume != UINT_MAX)) | |
928 | { | |
06c3eeed | 929 | mm_result = waveOutGetVolume ((HWAVEOUT) WAVE_MAPPER, &ui_volume_org); |
f60ae425 BK |
930 | if (mm_result == MMSYSERR_NOERROR) |
931 | { | |
06c3eeed JB |
932 | b_reset_volume = TRUE; |
933 | mm_result = waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume); | |
f60ae425 BK |
934 | if ( mm_result != MMSYSERR_NOERROR) |
935 | { | |
06c3eeed JB |
936 | sound_warning ("waveOutSetVolume failed to set the volume level\n" |
937 | "of the WAVE_MAPPER device.\n" | |
938 | "As a result, the user selected volume level will\n" | |
939 | "not be used."); | |
f60ae425 BK |
940 | } |
941 | } | |
942 | else | |
943 | { | |
06c3eeed JB |
944 | sound_warning ("waveOutGetVolume failed to obtain the original\n" |
945 | "volume level of the WAVE_MAPPER device.\n" | |
946 | "As a result, the user selected volume level will\n" | |
947 | "not be used."); | |
f60ae425 BK |
948 | } |
949 | } | |
950 | memset (sz_cmd_buf, 0, sizeof(sz_cmd_buf)); | |
951 | memset (sz_ret_buf, 0, sizeof(sz_ret_buf)); | |
952 | strcpy (sz_cmd_buf, "play GNUEmacs_PlaySound_Device wait"); | |
06c3eeed | 953 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, 520, NULL); |
f60ae425 BK |
954 | if (mci_error != 0) |
955 | { | |
06c3eeed JB |
956 | sound_warning ("The play mciSendString command failed to play the\n" |
957 | "opened sound file."); | |
958 | i_result = (int) mci_error; | |
f60ae425 BK |
959 | } |
960 | memset (sz_cmd_buf, 0, sizeof(sz_cmd_buf)); | |
961 | memset (sz_ret_buf, 0, sizeof(sz_ret_buf)); | |
962 | strcpy (sz_cmd_buf, "close GNUEmacs_PlaySound_Device wait"); | |
06c3eeed | 963 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, 520, NULL); |
f60ae425 BK |
964 | if (b_reset_volume == TRUE) |
965 | { | |
06c3eeed | 966 | mm_result=waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume_org); |
f60ae425 BK |
967 | if (mm_result != MMSYSERR_NOERROR) |
968 | { | |
06c3eeed JB |
969 | sound_warning ("waveOutSetVolume failed to reset the original volume\n" |
970 | "level of the WAVE_MAPPER device."); | |
f60ae425 BK |
971 | } |
972 | } | |
973 | return i_result; | |
974 | } | |
975 | ||
976 | /* END: Windows specific functions */ | |
977 | ||
978 | #endif /* WINDOWSNT */ | |
979 | ||
f60ae425 BK |
980 | DEFUN ("play-sound-internal", Fplay_sound_internal, Splay_sound_internal, 1, 1, 0, |
981 | doc: /* Play sound SOUND. | |
982 | ||
983 | Internal use only, use `play-sound' instead.\n */) | |
984 | (sound) | |
985 | Lisp_Object sound; | |
986 | { | |
987 | Lisp_Object attrs[SOUND_ATTR_SENTINEL]; | |
988 | int count = SPECPDL_INDEX (); | |
989 | ||
990 | #ifndef WINDOWSNT | |
991 | Lisp_Object file; | |
992 | struct gcpro gcpro1, gcpro2; | |
993 | struct sound_device sd; | |
994 | struct sound s; | |
995 | Lisp_Object args[2]; | |
996 | #else /* WINDOWSNT */ | |
06c3eeed JB |
997 | int len = 0; |
998 | Lisp_Object lo_file = {0}; | |
999 | char * psz_file = NULL; | |
1000 | unsigned long ui_volume_tmp = UINT_MAX; | |
1001 | unsigned long ui_volume = UINT_MAX; | |
1002 | int i_result = 0; | |
f60ae425 BK |
1003 | #endif /* WINDOWSNT */ |
1004 | ||
1005 | /* Parse the sound specification. Give up if it is invalid. */ | |
1006 | if (!parse_sound (sound, attrs)) | |
1007 | error ("Invalid sound specification"); | |
1008 | ||
1009 | #ifndef WINDOWSNT | |
1010 | file = Qnil; | |
1011 | GCPRO2 (sound, file); | |
1012 | bzero (&sd, sizeof sd); | |
1013 | bzero (&s, sizeof s); | |
1014 | current_sound_device = &sd; | |
1015 | current_sound = &s; | |
1016 | record_unwind_protect (sound_cleanup, Qnil); | |
1017 | s.header = (char *) alloca (MAX_SOUND_HEADER_BYTES); | |
1018 | ||
1019 | if (STRINGP (attrs[SOUND_FILE])) | |
1020 | { | |
1021 | /* Open the sound file. */ | |
1022 | s.fd = openp (Fcons (Vdata_directory, Qnil), | |
1023 | attrs[SOUND_FILE], Qnil, &file, Qnil); | |
1024 | if (s.fd < 0) | |
1025 | sound_perror ("Could not open sound file"); | |
1026 | ||
1027 | /* Read the first bytes from the file. */ | |
1028 | s.header_size = emacs_read (s.fd, s.header, MAX_SOUND_HEADER_BYTES); | |
1029 | if (s.header_size < 0) | |
1030 | sound_perror ("Invalid sound file header"); | |
1031 | } | |
1032 | else | |
1033 | { | |
1034 | s.data = attrs[SOUND_DATA]; | |
1035 | s.header_size = min (MAX_SOUND_HEADER_BYTES, SBYTES (s.data)); | |
1036 | bcopy (SDATA (s.data), s.header, s.header_size); | |
1037 | } | |
1038 | ||
1039 | /* Find out the type of sound. Give up if we can't tell. */ | |
1040 | find_sound_type (&s); | |
1041 | ||
1042 | /* Set up a device. */ | |
1043 | if (STRINGP (attrs[SOUND_DEVICE])) | |
1044 | { | |
1045 | int len = SCHARS (attrs[SOUND_DEVICE]); | |
1046 | sd.file = (char *) alloca (len + 1); | |
1047 | strcpy (sd.file, SDATA (attrs[SOUND_DEVICE])); | |
1048 | } | |
1049 | ||
1050 | if (INTEGERP (attrs[SOUND_VOLUME])) | |
1051 | sd.volume = XFASTINT (attrs[SOUND_VOLUME]); | |
1052 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
1053 | sd.volume = XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; | |
7840ced1 | 1054 | |
f60ae425 BK |
1055 | args[0] = Qplay_sound_functions; |
1056 | args[1] = sound; | |
1057 | Frun_hook_with_args (2, args); | |
1058 | ||
1059 | /* There is only one type of device we currently support, the VOX | |
1060 | sound driver. Set up the device interface functions for that | |
1061 | device. */ | |
1062 | vox_init (&sd); | |
1063 | ||
1064 | /* Open the device. */ | |
1065 | sd.open (&sd); | |
1066 | ||
1067 | /* Play the sound. */ | |
1068 | s.play (&s, &sd); | |
1069 | ||
1070 | /* Close the input file, if any. */ | |
1071 | if (!STRINGP (s.data)) | |
1072 | { | |
1073 | emacs_close (s.fd); | |
1074 | s.fd = -1; | |
1075 | } | |
1076 | ||
1077 | /* Close the device. */ | |
1078 | sd.close (&sd); | |
1079 | ||
1080 | /* Clean up. */ | |
1081 | current_sound_device = NULL; | |
1082 | current_sound = NULL; | |
1083 | UNGCPRO; | |
06c3eeed | 1084 | |
f60ae425 | 1085 | #else /* WINDOWSNT */ |
06c3eeed JB |
1086 | |
1087 | lo_file = Fexpand_file_name (attrs[SOUND_FILE], Qnil); | |
1088 | len = XSTRING (lo_file)->size; | |
1089 | psz_file = (char *) alloca (len + 1); | |
f60ae425 BK |
1090 | strcpy (psz_file, XSTRING (lo_file)->data); |
1091 | if (INTEGERP (attrs[SOUND_VOLUME])) | |
1092 | { | |
06c3eeed | 1093 | ui_volume_tmp = XFASTINT (attrs[SOUND_VOLUME]); |
f60ae425 BK |
1094 | } |
1095 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
1096 | { | |
06c3eeed | 1097 | ui_volume_tmp = (unsigned long) XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; |
f60ae425 BK |
1098 | } |
1099 | /* | |
1100 | Based on some experiments I have conducted, a value of 100 or less | |
1101 | for the sound volume is much too low. You cannot even hear it. | |
1102 | A value of UINT_MAX indicates that you wish for the sound to played | |
1103 | at the maximum possible volume. A value of UINT_MAX/2 plays the | |
1104 | sound at 50% maximum volume. Therefore the value passed to do_play_sound | |
06c3eeed | 1105 | (and thus to waveOutSetVolume) must be some fraction of UINT_MAX. |
f60ae425 | 1106 | The following code adjusts the user specified volume level appropriately. |
06c3eeed | 1107 | */ |
f60ae425 BK |
1108 | if ((ui_volume_tmp > 0) && (ui_volume_tmp <= 100)) |
1109 | { | |
06c3eeed | 1110 | ui_volume = ui_volume_tmp * (UINT_MAX / 100); |
f60ae425 | 1111 | } |
06c3eeed JB |
1112 | i_result = do_play_sound (psz_file, ui_volume); |
1113 | ||
f60ae425 | 1114 | #endif /* WINDOWSNT */ |
06c3eeed | 1115 | |
f60ae425 BK |
1116 | unbind_to (count, Qnil); |
1117 | return Qnil; | |
1118 | } | |
7840ced1 GM |
1119 | \f |
1120 | /*********************************************************************** | |
1121 | Initialization | |
1122 | ***********************************************************************/ | |
1123 | ||
1124 | void | |
1125 | syms_of_sound () | |
1126 | { | |
1127 | QCdevice = intern (":device"); | |
1128 | staticpro (&QCdevice); | |
1129 | QCvolume = intern (":volume"); | |
1130 | staticpro (&QCvolume); | |
1131 | Qsound = intern ("sound"); | |
1132 | staticpro (&Qsound); | |
2a53558d GM |
1133 | Qplay_sound_functions = intern ("play-sound-functions"); |
1134 | staticpro (&Qplay_sound_functions); | |
7840ced1 | 1135 | |
14e415e7 | 1136 | defsubr (&Splay_sound_internal); |
7840ced1 GM |
1137 | } |
1138 | ||
1139 | ||
1140 | void | |
1141 | init_sound () | |
1142 | { | |
1143 | } | |
1144 | ||
1145 | #endif /* HAVE_SOUND */ |