Commit | Line | Data |
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7840ced1 | 1 | /* sound.c -- sound support. |
0b5538bd TTN |
2 | Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004, |
3 | 2005 Free Software Foundation, Inc. | |
7840ced1 GM |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
7840ced1 GM |
21 | |
22 | /* Written by Gerd Moellmann <gerd@gnu.org>. Tested with Luigi's | |
23 | driver on FreeBSD 2.2.7 with a SoundBlaster 16. */ | |
24 | ||
f60ae425 BK |
25 | /* |
26 | Modified by Ben Key <Bkey1@tampabay.rr.com> to add a partial | |
27 | implementation of the play-sound specification for Windows. | |
28 | ||
29 | Notes: | |
30 | In the Windows implementation of play-sound-internal only the | |
31 | :file and :volume keywords are supported. The :device keyword, | |
32 | if present, is ignored. The :data keyword, if present, will | |
33 | cause an error to be generated. | |
34 | ||
35 | The Windows implementation of play-sound is implemented via the | |
36 | Win32 API functions mciSendString, waveOutGetVolume, and | |
06c3eeed | 37 | waveOutSetVolume which are exported by Winmm.dll. |
f60ae425 BK |
38 | */ |
39 | ||
7840ced1 GM |
40 | #include <config.h> |
41 | ||
42 | #if defined HAVE_SOUND | |
43 | ||
f60ae425 | 44 | /* BEGIN: Common Includes */ |
7840ced1 GM |
45 | #include <fcntl.h> |
46 | #include <unistd.h> | |
47 | #include <sys/types.h> | |
7840ced1 | 48 | #include <errno.h> |
53fab6e2 GM |
49 | #include "lisp.h" |
50 | #include "dispextern.h" | |
51 | #include "atimer.h" | |
bb6e8cee GM |
52 | #include <signal.h> |
53 | #include "syssignal.h" | |
f60ae425 BK |
54 | /* END: Common Includes */ |
55 | ||
56 | ||
57 | /* BEGIN: Non Windows Includes */ | |
58 | #ifndef WINDOWSNT | |
7840ced1 | 59 | |
502150e5 PJ |
60 | #ifndef MSDOS |
61 | #include <sys/ioctl.h> | |
62 | #endif | |
63 | ||
7840ced1 GM |
64 | /* FreeBSD has machine/soundcard.h. Voxware sound driver docs mention |
65 | sys/soundcard.h. So, let's try whatever's there. */ | |
66 | ||
67 | #ifdef HAVE_MACHINE_SOUNDCARD_H | |
68 | #include <machine/soundcard.h> | |
69 | #endif | |
70 | #ifdef HAVE_SYS_SOUNDCARD_H | |
71 | #include <sys/soundcard.h> | |
72 | #endif | |
80fcd514 | 73 | #ifdef HAVE_SOUNDCARD_H |
80fcd514 KR |
74 | #include <soundcard.h> |
75 | #endif | |
f60ae425 BK |
76 | /* END: Non Windows Includes */ |
77 | ||
78 | #else /* WINDOWSNT */ | |
79 | ||
80 | /* BEGIN: Windows Specific Includes */ | |
81 | #include <stdio.h> | |
82 | #include <stdlib.h> | |
83 | #include <string.h> | |
84 | #include <limits.h> | |
85 | #include <windows.h> | |
86 | #include <mmsystem.h> | |
87 | /* END: Windows Specific Includes */ | |
88 | ||
89 | #endif /* WINDOWSNT */ | |
90 | ||
91 | /* BEGIN: Common Definitions */ | |
92 | #define abs(X) ((X) < 0 ? -(X) : (X)) | |
93 | ||
94 | /* Symbols. */ | |
95 | ||
96 | extern Lisp_Object QCfile, QCdata; | |
97 | Lisp_Object QCvolume, QCdevice; | |
98 | Lisp_Object Qsound; | |
99 | Lisp_Object Qplay_sound_functions; | |
100 | ||
101 | /* Indices of attributes in a sound attributes vector. */ | |
102 | ||
103 | enum sound_attr | |
104 | { | |
105 | SOUND_FILE, | |
106 | SOUND_DATA, | |
107 | SOUND_DEVICE, | |
108 | SOUND_VOLUME, | |
109 | SOUND_ATTR_SENTINEL | |
110 | }; | |
111 | ||
112 | static void sound_perror P_ ((char *)); | |
113 | static void sound_warning P_ ((char *)); | |
114 | static int parse_sound P_ ((Lisp_Object, Lisp_Object *)); | |
115 | ||
116 | /* END: Common Definitions */ | |
117 | ||
118 | /* BEGIN: Non Windows Definitions */ | |
119 | #ifndef WINDOWSNT | |
80fcd514 KR |
120 | |
121 | #ifndef DEFAULT_SOUND_DEVICE | |
122 | #define DEFAULT_SOUND_DEVICE "/dev/dsp" | |
123 | #endif | |
7840ced1 | 124 | |
7840ced1 GM |
125 | |
126 | /* Structure forward declarations. */ | |
127 | ||
d1299cde | 128 | struct sound; |
7840ced1 GM |
129 | struct sound_device; |
130 | ||
131 | /* The file header of RIFF-WAVE files (*.wav). Files are always in | |
132 | little-endian byte-order. */ | |
133 | ||
134 | struct wav_header | |
135 | { | |
136 | u_int32_t magic; | |
137 | u_int32_t length; | |
138 | u_int32_t chunk_type; | |
139 | u_int32_t chunk_format; | |
140 | u_int32_t chunk_length; | |
141 | u_int16_t format; | |
142 | u_int16_t channels; | |
143 | u_int32_t sample_rate; | |
144 | u_int32_t bytes_per_second; | |
145 | u_int16_t sample_size; | |
146 | u_int16_t precision; | |
147 | u_int32_t chunk_data; | |
148 | u_int32_t data_length; | |
149 | }; | |
150 | ||
151 | /* The file header of Sun adio files (*.au). Files are always in | |
152 | big-endian byte-order. */ | |
153 | ||
154 | struct au_header | |
155 | { | |
156 | /* ASCII ".snd" */ | |
157 | u_int32_t magic_number; | |
a4ff5d67 | 158 | |
7840ced1 GM |
159 | /* Offset of data part from start of file. Minimum value is 24. */ |
160 | u_int32_t data_offset; | |
a4ff5d67 | 161 | |
7840ced1 GM |
162 | /* Size of data part, 0xffffffff if unknown. */ |
163 | u_int32_t data_size; | |
164 | ||
165 | /* Data encoding format. | |
166 | 1 8-bit ISDN u-law | |
167 | 2 8-bit linear PCM (REF-PCM) | |
168 | 3 16-bit linear PCM | |
169 | 4 24-bit linear PCM | |
170 | 5 32-bit linear PCM | |
171 | 6 32-bit IEEE floating-point | |
172 | 7 64-bit IEEE floating-point | |
173 | 23 8-bit u-law compressed using CCITT 0.721 ADPCM voice data | |
174 | encoding scheme. */ | |
175 | u_int32_t encoding; | |
176 | ||
177 | /* Number of samples per second. */ | |
178 | u_int32_t sample_rate; | |
179 | ||
180 | /* Number of interleaved channels. */ | |
181 | u_int32_t channels; | |
182 | }; | |
183 | ||
184 | /* Maximum of all sound file headers sizes. */ | |
185 | ||
186 | #define MAX_SOUND_HEADER_BYTES \ | |
187 | max (sizeof (struct wav_header), sizeof (struct au_header)) | |
188 | ||
189 | /* Interface structure for sound devices. */ | |
190 | ||
191 | struct sound_device | |
192 | { | |
193 | /* The name of the device or null meaning use a default device name. */ | |
194 | char *file; | |
195 | ||
196 | /* File descriptor of the device. */ | |
197 | int fd; | |
198 | ||
199 | /* Device-dependent format. */ | |
200 | int format; | |
201 | ||
202 | /* Volume (0..100). Zero means unspecified. */ | |
203 | int volume; | |
204 | ||
205 | /* Sample size. */ | |
206 | int sample_size; | |
207 | ||
208 | /* Sample rate. */ | |
209 | int sample_rate; | |
210 | ||
211 | /* Bytes per second. */ | |
212 | int bps; | |
213 | ||
214 | /* 1 = mono, 2 = stereo, 0 = don't set. */ | |
215 | int channels; | |
a4ff5d67 | 216 | |
7840ced1 GM |
217 | /* Open device SD. */ |
218 | void (* open) P_ ((struct sound_device *sd)); | |
219 | ||
220 | /* Close device SD. */ | |
221 | void (* close) P_ ((struct sound_device *sd)); | |
222 | ||
223 | /* Configure SD accoring to device-dependent parameters. */ | |
224 | void (* configure) P_ ((struct sound_device *device)); | |
a4ff5d67 | 225 | |
d1299cde | 226 | /* Choose a device-dependent format for outputting sound S. */ |
7840ced1 | 227 | void (* choose_format) P_ ((struct sound_device *sd, |
d1299cde | 228 | struct sound *s)); |
7840ced1 GM |
229 | |
230 | /* Write NYBTES bytes from BUFFER to device SD. */ | |
dca0fc1c KR |
231 | void (* write) P_ ((struct sound_device *sd, const char *buffer, |
232 | int nbytes)); | |
7840ced1 GM |
233 | |
234 | /* A place for devices to store additional data. */ | |
235 | void *data; | |
236 | }; | |
237 | ||
238 | /* An enumerator for each supported sound file type. */ | |
239 | ||
240 | enum sound_type | |
241 | { | |
242 | RIFF, | |
243 | SUN_AUDIO | |
244 | }; | |
245 | ||
246 | /* Interface structure for sound files. */ | |
247 | ||
d1299cde | 248 | struct sound |
7840ced1 GM |
249 | { |
250 | /* The type of the file. */ | |
251 | enum sound_type type; | |
252 | ||
d1299cde | 253 | /* File descriptor of a sound file. */ |
7840ced1 GM |
254 | int fd; |
255 | ||
d1299cde GM |
256 | /* Pointer to sound file header. This contains header_size bytes |
257 | read from the start of a sound file. */ | |
7840ced1 GM |
258 | char *header; |
259 | ||
d1299cde GM |
260 | /* Number of bytes raed from sound file. This is always <= |
261 | MAX_SOUND_HEADER_BYTES. */ | |
262 | int header_size; | |
263 | ||
264 | /* Sound data, if a string. */ | |
265 | Lisp_Object data; | |
266 | ||
267 | /* Play sound file S on device SD. */ | |
a4ff5d67 | 268 | void (* play) P_ ((struct sound *s, struct sound_device *sd)); |
7840ced1 GM |
269 | }; |
270 | ||
14e415e7 | 271 | /* These are set during `play-sound-internal' so that sound_cleanup has |
7840ced1 GM |
272 | access to them. */ |
273 | ||
d1299cde GM |
274 | struct sound_device *current_sound_device; |
275 | struct sound *current_sound; | |
7840ced1 GM |
276 | |
277 | /* Function prototypes. */ | |
278 | ||
279 | static void vox_open P_ ((struct sound_device *)); | |
280 | static void vox_configure P_ ((struct sound_device *)); | |
281 | static void vox_close P_ ((struct sound_device *sd)); | |
d1299cde | 282 | static void vox_choose_format P_ ((struct sound_device *, struct sound *)); |
7840ced1 | 283 | static void vox_init P_ ((struct sound_device *)); |
dca0fc1c | 284 | static void vox_write P_ ((struct sound_device *, const char *, int)); |
d1299cde | 285 | static void find_sound_type P_ ((struct sound *)); |
7840ced1 GM |
286 | static u_int32_t le2hl P_ ((u_int32_t)); |
287 | static u_int16_t le2hs P_ ((u_int16_t)); | |
288 | static u_int32_t be2hl P_ ((u_int32_t)); | |
d1299cde GM |
289 | static int wav_init P_ ((struct sound *)); |
290 | static void wav_play P_ ((struct sound *, struct sound_device *)); | |
291 | static int au_init P_ ((struct sound *)); | |
292 | static void au_play P_ ((struct sound *, struct sound_device *)); | |
7840ced1 | 293 | |
9680b9d0 GM |
294 | #if 0 /* Currently not used. */ |
295 | static u_int16_t be2hs P_ ((u_int16_t)); | |
296 | #endif | |
297 | ||
f60ae425 BK |
298 | /* END: Non Windows Definitions */ |
299 | #else /* WINDOWSNT */ | |
300 | ||
301 | /* BEGIN: Windows Specific Definitions */ | |
302 | static int do_play_sound P_ ((const char *, unsigned long)); | |
303 | /* | |
304 | END: Windows Specific Definitions */ | |
305 | #endif /* WINDOWSNT */ | |
7840ced1 GM |
306 | |
307 | \f | |
308 | /*********************************************************************** | |
309 | General | |
310 | ***********************************************************************/ | |
311 | ||
f60ae425 BK |
312 | /* BEGIN: Common functions */ |
313 | ||
7840ced1 GM |
314 | /* Like perror, but signals an error. */ |
315 | ||
316 | static void | |
317 | sound_perror (msg) | |
318 | char *msg; | |
319 | { | |
3297e2a1 AS |
320 | int saved_errno = errno; |
321 | ||
62725a92 GM |
322 | turn_on_atimers (1); |
323 | #ifdef SIGIO | |
324 | sigunblock (sigmask (SIGIO)); | |
325 | #endif | |
3297e2a1 AS |
326 | if (saved_errno != 0) |
327 | error ("%s: %s", msg, strerror (saved_errno)); | |
62725a92 GM |
328 | else |
329 | error ("%s", msg); | |
330 | } | |
331 | ||
332 | ||
333 | /* Display a warning message. */ | |
334 | ||
335 | static void | |
336 | sound_warning (msg) | |
337 | char *msg; | |
338 | { | |
339 | message (msg); | |
7840ced1 GM |
340 | } |
341 | ||
342 | ||
343 | /* Parse sound specification SOUND, and fill ATTRS with what is | |
344 | found. Value is non-zero if SOUND Is a valid sound specification. | |
345 | A valid sound specification is a list starting with the symbol | |
346 | `sound'. The rest of the list is a property list which may | |
347 | contain the following key/value pairs: | |
348 | ||
349 | - `:file FILE' | |
350 | ||
351 | FILE is the sound file to play. If it isn't an absolute name, | |
352 | it's searched under `data-directory'. | |
353 | ||
d1299cde GM |
354 | - `:data DATA' |
355 | ||
356 | DATA is a string containing sound data. Either :file or :data | |
357 | may be present, but not both. | |
358 | ||
7840ced1 GM |
359 | - `:device DEVICE' |
360 | ||
361 | DEVICE is the name of the device to play on, e.g. "/dev/dsp2". | |
362 | If not specified, a default device is used. | |
363 | ||
364 | - `:volume VOL' | |
365 | ||
2a53558d GM |
366 | VOL must be an integer in the range [0, 100], or a float in the |
367 | range [0, 1]. */ | |
7840ced1 GM |
368 | |
369 | static int | |
370 | parse_sound (sound, attrs) | |
371 | Lisp_Object sound; | |
372 | Lisp_Object *attrs; | |
373 | { | |
374 | /* SOUND must be a list starting with the symbol `sound'. */ | |
375 | if (!CONSP (sound) || !EQ (XCAR (sound), Qsound)) | |
376 | return 0; | |
377 | ||
378 | sound = XCDR (sound); | |
379 | attrs[SOUND_FILE] = Fplist_get (sound, QCfile); | |
d1299cde | 380 | attrs[SOUND_DATA] = Fplist_get (sound, QCdata); |
7840ced1 GM |
381 | attrs[SOUND_DEVICE] = Fplist_get (sound, QCdevice); |
382 | attrs[SOUND_VOLUME] = Fplist_get (sound, QCvolume); | |
383 | ||
f60ae425 | 384 | #ifndef WINDOWSNT |
d1299cde GM |
385 | /* File name or data must be specified. */ |
386 | if (!STRINGP (attrs[SOUND_FILE]) | |
387 | && !STRINGP (attrs[SOUND_DATA])) | |
7840ced1 | 388 | return 0; |
f60ae425 BK |
389 | #else /* WINDOWSNT */ |
390 | /* | |
391 | Data is not supported in Windows. Therefore a | |
392 | File name MUST be supplied. | |
393 | */ | |
394 | if (!STRINGP (attrs[SOUND_FILE])) | |
395 | { | |
396 | return 0; | |
397 | } | |
398 | #endif /* WINDOWSNT */ | |
7840ced1 GM |
399 | |
400 | /* Volume must be in the range 0..100 or unspecified. */ | |
401 | if (!NILP (attrs[SOUND_VOLUME])) | |
402 | { | |
2a53558d GM |
403 | if (INTEGERP (attrs[SOUND_VOLUME])) |
404 | { | |
405 | if (XINT (attrs[SOUND_VOLUME]) < 0 | |
406 | || XINT (attrs[SOUND_VOLUME]) > 100) | |
407 | return 0; | |
408 | } | |
409 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
410 | { | |
411 | if (XFLOAT_DATA (attrs[SOUND_VOLUME]) < 0 | |
412 | || XFLOAT_DATA (attrs[SOUND_VOLUME]) > 1) | |
413 | return 0; | |
414 | } | |
415 | else | |
7840ced1 GM |
416 | return 0; |
417 | } | |
418 | ||
f60ae425 | 419 | #ifndef WINDOWSNT |
7840ced1 GM |
420 | /* Device must be a string or unspecified. */ |
421 | if (!NILP (attrs[SOUND_DEVICE]) | |
422 | && !STRINGP (attrs[SOUND_DEVICE])) | |
423 | return 0; | |
f60ae425 BK |
424 | #endif /* WINDOWSNT */ |
425 | /* | |
426 | Since device is ignored in Windows, it does not matter | |
427 | what it is. | |
428 | */ | |
7840ced1 GM |
429 | return 1; |
430 | } | |
431 | ||
f60ae425 BK |
432 | /* END: Common functions */ |
433 | ||
434 | /* BEGIN: Non Windows functions */ | |
435 | #ifndef WINDOWSNT | |
7840ced1 GM |
436 | |
437 | /* Find out the type of the sound file whose file descriptor is FD. | |
d1299cde | 438 | S is the sound file structure to fill in. */ |
7840ced1 GM |
439 | |
440 | static void | |
d1299cde GM |
441 | find_sound_type (s) |
442 | struct sound *s; | |
7840ced1 | 443 | { |
d1299cde GM |
444 | if (!wav_init (s) && !au_init (s)) |
445 | error ("Unknown sound format"); | |
7840ced1 GM |
446 | } |
447 | ||
448 | ||
14e415e7 | 449 | /* Function installed by play-sound-internal with record_unwind_protect. */ |
7840ced1 GM |
450 | |
451 | static Lisp_Object | |
452 | sound_cleanup (arg) | |
453 | Lisp_Object arg; | |
454 | { | |
d1299cde | 455 | if (current_sound_device) |
7840ced1 | 456 | { |
66e4690f KR |
457 | if (current_sound_device->close) |
458 | current_sound_device->close (current_sound_device); | |
d1299cde GM |
459 | if (current_sound->fd > 0) |
460 | emacs_close (current_sound->fd); | |
7840ced1 | 461 | } |
3887b449 GM |
462 | |
463 | return Qnil; | |
7840ced1 GM |
464 | } |
465 | ||
7840ced1 GM |
466 | /*********************************************************************** |
467 | Byte-order Conversion | |
468 | ***********************************************************************/ | |
469 | ||
470 | /* Convert 32-bit value VALUE which is in little-endian byte-order | |
471 | to host byte-order. */ | |
472 | ||
473 | static u_int32_t | |
474 | le2hl (value) | |
475 | u_int32_t value; | |
476 | { | |
477 | #ifdef WORDS_BIG_ENDIAN | |
478 | unsigned char *p = (unsigned char *) &value; | |
479 | value = p[0] + (p[1] << 8) + (p[2] << 16) + (p[3] << 24); | |
480 | #endif | |
481 | return value; | |
482 | } | |
483 | ||
484 | ||
485 | /* Convert 16-bit value VALUE which is in little-endian byte-order | |
486 | to host byte-order. */ | |
487 | ||
488 | static u_int16_t | |
489 | le2hs (value) | |
490 | u_int16_t value; | |
491 | { | |
492 | #ifdef WORDS_BIG_ENDIAN | |
493 | unsigned char *p = (unsigned char *) &value; | |
494 | value = p[0] + (p[1] << 8); | |
495 | #endif | |
496 | return value; | |
497 | } | |
498 | ||
499 | ||
500 | /* Convert 32-bit value VALUE which is in big-endian byte-order | |
501 | to host byte-order. */ | |
502 | ||
503 | static u_int32_t | |
504 | be2hl (value) | |
505 | u_int32_t value; | |
506 | { | |
507 | #ifndef WORDS_BIG_ENDIAN | |
508 | unsigned char *p = (unsigned char *) &value; | |
509 | value = p[3] + (p[2] << 8) + (p[1] << 16) + (p[0] << 24); | |
510 | #endif | |
511 | return value; | |
512 | } | |
513 | ||
514 | ||
9680b9d0 GM |
515 | #if 0 /* Currently not used. */ |
516 | ||
7840ced1 GM |
517 | /* Convert 16-bit value VALUE which is in big-endian byte-order |
518 | to host byte-order. */ | |
519 | ||
520 | static u_int16_t | |
521 | be2hs (value) | |
522 | u_int16_t value; | |
523 | { | |
524 | #ifndef WORDS_BIG_ENDIAN | |
525 | unsigned char *p = (unsigned char *) &value; | |
526 | value = p[1] + (p[0] << 8); | |
527 | #endif | |
528 | return value; | |
529 | } | |
530 | ||
9680b9d0 | 531 | #endif /* 0 */ |
7840ced1 | 532 | |
7840ced1 GM |
533 | /*********************************************************************** |
534 | RIFF-WAVE (*.wav) | |
535 | ***********************************************************************/ | |
536 | ||
d1299cde | 537 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
538 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
539 | sound file. If the file is a WAV-format file, set up interface | |
d1299cde | 540 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
541 | Value is non-zero if the file is a WAV file. */ |
542 | ||
543 | static int | |
d1299cde GM |
544 | wav_init (s) |
545 | struct sound *s; | |
7840ced1 | 546 | { |
d1299cde GM |
547 | struct wav_header *header = (struct wav_header *) s->header; |
548 | ||
549 | if (s->header_size < sizeof *header | |
550 | || bcmp (s->header, "RIFF", 4) != 0) | |
7840ced1 GM |
551 | return 0; |
552 | ||
553 | /* WAV files are in little-endian order. Convert the header | |
554 | if on a big-endian machine. */ | |
555 | header->magic = le2hl (header->magic); | |
556 | header->length = le2hl (header->length); | |
557 | header->chunk_type = le2hl (header->chunk_type); | |
558 | header->chunk_format = le2hl (header->chunk_format); | |
559 | header->chunk_length = le2hl (header->chunk_length); | |
560 | header->format = le2hs (header->format); | |
561 | header->channels = le2hs (header->channels); | |
562 | header->sample_rate = le2hl (header->sample_rate); | |
563 | header->bytes_per_second = le2hl (header->bytes_per_second); | |
564 | header->sample_size = le2hs (header->sample_size); | |
565 | header->precision = le2hs (header->precision); | |
566 | header->chunk_data = le2hl (header->chunk_data); | |
567 | header->data_length = le2hl (header->data_length); | |
568 | ||
569 | /* Set up the interface functions for WAV. */ | |
d1299cde GM |
570 | s->type = RIFF; |
571 | s->play = wav_play; | |
7840ced1 GM |
572 | |
573 | return 1; | |
a4ff5d67 | 574 | } |
7840ced1 GM |
575 | |
576 | ||
d1299cde | 577 | /* Play RIFF-WAVE audio file S on sound device SD. */ |
7840ced1 GM |
578 | |
579 | static void | |
d1299cde GM |
580 | wav_play (s, sd) |
581 | struct sound *s; | |
7840ced1 GM |
582 | struct sound_device *sd; |
583 | { | |
d1299cde | 584 | struct wav_header *header = (struct wav_header *) s->header; |
7840ced1 GM |
585 | |
586 | /* Let the device choose a suitable device-dependent format | |
587 | for the file. */ | |
d1299cde | 588 | sd->choose_format (sd, s); |
a4ff5d67 | 589 | |
7840ced1 GM |
590 | /* Configure the device. */ |
591 | sd->sample_size = header->sample_size; | |
592 | sd->sample_rate = header->sample_rate; | |
593 | sd->bps = header->bytes_per_second; | |
594 | sd->channels = header->channels; | |
595 | sd->configure (sd); | |
596 | ||
597 | /* Copy sound data to the device. The WAV file specification is | |
598 | actually more complex. This simple scheme worked with all WAV | |
599 | files I found so far. If someone feels inclined to implement the | |
600 | whole RIFF-WAVE spec, please do. */ | |
d1299cde | 601 | if (STRINGP (s->data)) |
d5db4077 KR |
602 | sd->write (sd, SDATA (s->data) + sizeof *header, |
603 | SBYTES (s->data) - sizeof *header); | |
d1299cde GM |
604 | else |
605 | { | |
606 | char *buffer; | |
607 | int nbytes; | |
608 | int blksize = 2048; | |
a4ff5d67 | 609 | |
d1299cde GM |
610 | buffer = (char *) alloca (blksize); |
611 | lseek (s->fd, sizeof *header, SEEK_SET); | |
a4ff5d67 | 612 | |
d1299cde GM |
613 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) |
614 | sd->write (sd, buffer, nbytes); | |
7840ced1 | 615 | |
d1299cde | 616 | if (nbytes < 0) |
62725a92 | 617 | sound_perror ("Error reading sound file"); |
d1299cde | 618 | } |
7840ced1 GM |
619 | } |
620 | ||
621 | ||
7840ced1 GM |
622 | /*********************************************************************** |
623 | Sun Audio (*.au) | |
624 | ***********************************************************************/ | |
625 | ||
a4ff5d67 | 626 | /* Sun audio file encodings. */ |
7840ced1 GM |
627 | |
628 | enum au_encoding | |
629 | { | |
630 | AU_ENCODING_ULAW_8 = 1, | |
631 | AU_ENCODING_8, | |
632 | AU_ENCODING_16, | |
633 | AU_ENCODING_24, | |
634 | AU_ENCODING_32, | |
635 | AU_ENCODING_IEEE32, | |
636 | AU_ENCODING_IEEE64, | |
637 | AU_COMPRESSED = 23 | |
638 | }; | |
639 | ||
640 | ||
d1299cde | 641 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
642 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
643 | sound file. If the file is a AU-format file, set up interface | |
d1299cde | 644 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
645 | Value is non-zero if the file is an AU file. */ |
646 | ||
647 | static int | |
d1299cde GM |
648 | au_init (s) |
649 | struct sound *s; | |
7840ced1 | 650 | { |
d1299cde | 651 | struct au_header *header = (struct au_header *) s->header; |
a4ff5d67 | 652 | |
d1299cde GM |
653 | if (s->header_size < sizeof *header |
654 | || bcmp (s->header, ".snd", 4) != 0) | |
7840ced1 | 655 | return 0; |
a4ff5d67 | 656 | |
7840ced1 GM |
657 | header->magic_number = be2hl (header->magic_number); |
658 | header->data_offset = be2hl (header->data_offset); | |
659 | header->data_size = be2hl (header->data_size); | |
660 | header->encoding = be2hl (header->encoding); | |
661 | header->sample_rate = be2hl (header->sample_rate); | |
662 | header->channels = be2hl (header->channels); | |
a4ff5d67 | 663 | |
7840ced1 | 664 | /* Set up the interface functions for AU. */ |
d1299cde GM |
665 | s->type = SUN_AUDIO; |
666 | s->play = au_play; | |
7840ced1 GM |
667 | |
668 | return 1; | |
669 | } | |
670 | ||
671 | ||
d1299cde | 672 | /* Play Sun audio file S on sound device SD. */ |
7840ced1 GM |
673 | |
674 | static void | |
d1299cde GM |
675 | au_play (s, sd) |
676 | struct sound *s; | |
7840ced1 GM |
677 | struct sound_device *sd; |
678 | { | |
d1299cde | 679 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
680 | |
681 | sd->sample_size = 0; | |
682 | sd->sample_rate = header->sample_rate; | |
683 | sd->bps = 0; | |
684 | sd->channels = header->channels; | |
d1299cde | 685 | sd->choose_format (sd, s); |
7840ced1 | 686 | sd->configure (sd); |
d1299cde GM |
687 | |
688 | if (STRINGP (s->data)) | |
d5db4077 KR |
689 | sd->write (sd, SDATA (s->data) + header->data_offset, |
690 | SBYTES (s->data) - header->data_offset); | |
d1299cde GM |
691 | else |
692 | { | |
693 | int blksize = 2048; | |
694 | char *buffer; | |
695 | int nbytes; | |
a4ff5d67 | 696 | |
d1299cde GM |
697 | /* Seek */ |
698 | lseek (s->fd, header->data_offset, SEEK_SET); | |
a4ff5d67 | 699 | |
d1299cde GM |
700 | /* Copy sound data to the device. */ |
701 | buffer = (char *) alloca (blksize); | |
702 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) | |
703 | sd->write (sd, buffer, nbytes); | |
a4ff5d67 | 704 | |
d1299cde | 705 | if (nbytes < 0) |
62725a92 | 706 | sound_perror ("Error reading sound file"); |
d1299cde | 707 | } |
7840ced1 GM |
708 | } |
709 | ||
710 | ||
7840ced1 GM |
711 | /*********************************************************************** |
712 | Voxware Driver Interface | |
713 | ***********************************************************************/ | |
714 | ||
715 | /* This driver is available on GNU/Linux, and the free BSDs. FreeBSD | |
716 | has a compatible own driver aka Luigi's driver. */ | |
717 | ||
718 | ||
719 | /* Open device SD. If SD->file is non-null, open that device, | |
720 | otherwise use a default device name. */ | |
721 | ||
722 | static void | |
723 | vox_open (sd) | |
724 | struct sound_device *sd; | |
725 | { | |
726 | char *file; | |
a4ff5d67 | 727 | |
7840ced1 GM |
728 | /* Open the sound device. Default is /dev/dsp. */ |
729 | if (sd->file) | |
730 | file = sd->file; | |
731 | else | |
80fcd514 | 732 | file = DEFAULT_SOUND_DEVICE; |
a4ff5d67 | 733 | |
68c45bf0 | 734 | sd->fd = emacs_open (file, O_WRONLY, 0); |
7840ced1 GM |
735 | if (sd->fd < 0) |
736 | sound_perror (file); | |
737 | } | |
738 | ||
739 | ||
740 | /* Configure device SD from parameters in it. */ | |
741 | ||
742 | static void | |
743 | vox_configure (sd) | |
744 | struct sound_device *sd; | |
745 | { | |
28fcb7dc | 746 | int val; |
a4ff5d67 | 747 | |
7840ced1 GM |
748 | xassert (sd->fd >= 0); |
749 | ||
bb6e8cee GM |
750 | /* On GNU/Linux, it seems that the device driver doesn't like to be |
751 | interrupted by a signal. Block the ones we know to cause | |
752 | troubles. */ | |
b5cb1ada | 753 | turn_on_atimers (0); |
bb6e8cee GM |
754 | #ifdef SIGIO |
755 | sigblock (sigmask (SIGIO)); | |
756 | #endif | |
b5cb1ada | 757 | |
28fcb7dc GM |
758 | val = sd->format; |
759 | if (ioctl (sd->fd, SNDCTL_DSP_SETFMT, &sd->format) < 0 | |
760 | || val != sd->format) | |
62725a92 | 761 | sound_perror ("Could not set sound format"); |
7840ced1 | 762 | |
28fcb7dc GM |
763 | val = sd->channels != 1; |
764 | if (ioctl (sd->fd, SNDCTL_DSP_STEREO, &val) < 0 | |
765 | || val != (sd->channels != 1)) | |
62725a92 | 766 | sound_perror ("Could not set stereo/mono"); |
7840ced1 | 767 | |
28fcb7dc GM |
768 | /* I think bps and sampling_rate are the same, but who knows. |
769 | Check this. and use SND_DSP_SPEED for both. */ | |
770 | if (sd->sample_rate > 0) | |
771 | { | |
772 | val = sd->sample_rate; | |
62725a92 GM |
773 | if (ioctl (sd->fd, SNDCTL_DSP_SPEED, &sd->sample_rate) < 0) |
774 | sound_perror ("Could not set sound speed"); | |
775 | else if (val != sd->sample_rate) | |
776 | sound_warning ("Could not set sample rate"); | |
28fcb7dc | 777 | } |
7840ced1 | 778 | |
3887b449 GM |
779 | if (sd->volume > 0) |
780 | { | |
781 | int volume = sd->volume & 0xff; | |
782 | volume |= volume << 8; | |
28fcb7dc GM |
783 | /* This may fail if there is no mixer. Ignore the failure. */ |
784 | ioctl (sd->fd, SOUND_MIXER_WRITE_PCM, &volume); | |
3887b449 | 785 | } |
a4ff5d67 | 786 | |
b5cb1ada | 787 | turn_on_atimers (1); |
bb6e8cee GM |
788 | #ifdef SIGIO |
789 | sigunblock (sigmask (SIGIO)); | |
790 | #endif | |
7840ced1 GM |
791 | } |
792 | ||
793 | ||
794 | /* Close device SD if it is open. */ | |
795 | ||
796 | static void | |
797 | vox_close (sd) | |
798 | struct sound_device *sd; | |
799 | { | |
800 | if (sd->fd >= 0) | |
801 | { | |
bb6e8cee GM |
802 | /* On GNU/Linux, it seems that the device driver doesn't like to |
803 | be interrupted by a signal. Block the ones we know to cause | |
804 | troubles. */ | |
805 | #ifdef SIGIO | |
806 | sigblock (sigmask (SIGIO)); | |
807 | #endif | |
b5cb1ada | 808 | turn_on_atimers (0); |
a4ff5d67 | 809 | |
bb6e8cee | 810 | /* Flush sound data, and reset the device. */ |
7840ced1 | 811 | ioctl (sd->fd, SNDCTL_DSP_SYNC, NULL); |
a4ff5d67 | 812 | |
b5cb1ada | 813 | turn_on_atimers (1); |
bb6e8cee GM |
814 | #ifdef SIGIO |
815 | sigunblock (sigmask (SIGIO)); | |
816 | #endif | |
7840ced1 GM |
817 | |
818 | /* Close the device. */ | |
68c45bf0 | 819 | emacs_close (sd->fd); |
7840ced1 GM |
820 | sd->fd = -1; |
821 | } | |
822 | } | |
823 | ||
824 | ||
d1299cde | 825 | /* Choose device-dependent format for device SD from sound file S. */ |
7840ced1 GM |
826 | |
827 | static void | |
d1299cde | 828 | vox_choose_format (sd, s) |
7840ced1 | 829 | struct sound_device *sd; |
d1299cde | 830 | struct sound *s; |
7840ced1 | 831 | { |
d1299cde | 832 | if (s->type == RIFF) |
7840ced1 | 833 | { |
d1299cde | 834 | struct wav_header *h = (struct wav_header *) s->header; |
7840ced1 GM |
835 | if (h->precision == 8) |
836 | sd->format = AFMT_U8; | |
837 | else if (h->precision == 16) | |
838 | sd->format = AFMT_S16_LE; | |
839 | else | |
840 | error ("Unsupported WAV file format"); | |
841 | } | |
d1299cde | 842 | else if (s->type == SUN_AUDIO) |
7840ced1 | 843 | { |
d1299cde | 844 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
845 | switch (header->encoding) |
846 | { | |
847 | case AU_ENCODING_ULAW_8: | |
848 | case AU_ENCODING_IEEE32: | |
849 | case AU_ENCODING_IEEE64: | |
850 | sd->format = AFMT_MU_LAW; | |
851 | break; | |
a4ff5d67 | 852 | |
7840ced1 GM |
853 | case AU_ENCODING_8: |
854 | case AU_ENCODING_16: | |
855 | case AU_ENCODING_24: | |
856 | case AU_ENCODING_32: | |
857 | sd->format = AFMT_S16_LE; | |
858 | break; | |
859 | ||
860 | default: | |
861 | error ("Unsupported AU file format"); | |
862 | } | |
863 | } | |
864 | else | |
865 | abort (); | |
866 | } | |
867 | ||
868 | ||
869 | /* Initialize device SD. Set up the interface functions in the device | |
870 | structure. */ | |
871 | ||
872 | static void | |
873 | vox_init (sd) | |
874 | struct sound_device *sd; | |
875 | { | |
876 | sd->fd = -1; | |
877 | sd->open = vox_open; | |
878 | sd->close = vox_close; | |
879 | sd->configure = vox_configure; | |
880 | sd->choose_format = vox_choose_format; | |
881 | sd->write = vox_write; | |
882 | } | |
883 | ||
7840ced1 GM |
884 | /* Write NBYTES bytes from BUFFER to device SD. */ |
885 | ||
886 | static void | |
887 | vox_write (sd, buffer, nbytes) | |
888 | struct sound_device *sd; | |
dca0fc1c | 889 | const char *buffer; |
7840ced1 GM |
890 | int nbytes; |
891 | { | |
68c45bf0 | 892 | int nwritten = emacs_write (sd->fd, buffer, nbytes); |
7840ced1 | 893 | if (nwritten < 0) |
62725a92 | 894 | sound_perror ("Error writing to sound device"); |
7840ced1 GM |
895 | } |
896 | ||
f60ae425 BK |
897 | /* END: Non Windows functions */ |
898 | #else /* WINDOWSNT */ | |
899 | ||
900 | /* BEGIN: Windows specific functions */ | |
901 | ||
902 | static int | |
903 | do_play_sound (psz_file, ui_volume) | |
06c3eeed JB |
904 | const char *psz_file; |
905 | unsigned long ui_volume; | |
f60ae425 | 906 | { |
06c3eeed JB |
907 | int i_result = 0; |
908 | MCIERROR mci_error = 0; | |
909 | char sz_cmd_buf[520] = {0}; | |
910 | char sz_ret_buf[520] = {0}; | |
911 | MMRESULT mm_result = MMSYSERR_NOERROR; | |
912 | unsigned long ui_volume_org = 0; | |
913 | BOOL b_reset_volume = FALSE; | |
914 | ||
f60ae425 BK |
915 | memset (sz_cmd_buf, 0, sizeof(sz_cmd_buf)); |
916 | memset (sz_ret_buf, 0, sizeof(sz_ret_buf)); | |
06c3eeed JB |
917 | sprintf (sz_cmd_buf, |
918 | "open \"%s\" alias GNUEmacs_PlaySound_Device wait", | |
919 | psz_file); | |
920 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, 520, NULL); | |
f60ae425 BK |
921 | if (mci_error != 0) |
922 | { | |
06c3eeed JB |
923 | sound_warning ("The open mciSendString command failed to open\n" |
924 | "the specified sound file"); | |
925 | i_result = (int) mci_error; | |
f60ae425 BK |
926 | return i_result; |
927 | } | |
928 | if ((ui_volume > 0) && (ui_volume != UINT_MAX)) | |
929 | { | |
06c3eeed | 930 | mm_result = waveOutGetVolume ((HWAVEOUT) WAVE_MAPPER, &ui_volume_org); |
f60ae425 BK |
931 | if (mm_result == MMSYSERR_NOERROR) |
932 | { | |
06c3eeed JB |
933 | b_reset_volume = TRUE; |
934 | mm_result = waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume); | |
f60ae425 BK |
935 | if ( mm_result != MMSYSERR_NOERROR) |
936 | { | |
06c3eeed JB |
937 | sound_warning ("waveOutSetVolume failed to set the volume level\n" |
938 | "of the WAVE_MAPPER device.\n" | |
939 | "As a result, the user selected volume level will\n" | |
940 | "not be used."); | |
f60ae425 BK |
941 | } |
942 | } | |
943 | else | |
944 | { | |
06c3eeed JB |
945 | sound_warning ("waveOutGetVolume failed to obtain the original\n" |
946 | "volume level of the WAVE_MAPPER device.\n" | |
947 | "As a result, the user selected volume level will\n" | |
948 | "not be used."); | |
f60ae425 BK |
949 | } |
950 | } | |
951 | memset (sz_cmd_buf, 0, sizeof(sz_cmd_buf)); | |
952 | memset (sz_ret_buf, 0, sizeof(sz_ret_buf)); | |
953 | strcpy (sz_cmd_buf, "play GNUEmacs_PlaySound_Device wait"); | |
06c3eeed | 954 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, 520, NULL); |
f60ae425 BK |
955 | if (mci_error != 0) |
956 | { | |
06c3eeed JB |
957 | sound_warning ("The play mciSendString command failed to play the\n" |
958 | "opened sound file."); | |
959 | i_result = (int) mci_error; | |
f60ae425 BK |
960 | } |
961 | memset (sz_cmd_buf, 0, sizeof(sz_cmd_buf)); | |
962 | memset (sz_ret_buf, 0, sizeof(sz_ret_buf)); | |
963 | strcpy (sz_cmd_buf, "close GNUEmacs_PlaySound_Device wait"); | |
06c3eeed | 964 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, 520, NULL); |
f60ae425 BK |
965 | if (b_reset_volume == TRUE) |
966 | { | |
06c3eeed | 967 | mm_result=waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume_org); |
f60ae425 BK |
968 | if (mm_result != MMSYSERR_NOERROR) |
969 | { | |
06c3eeed JB |
970 | sound_warning ("waveOutSetVolume failed to reset the original volume\n" |
971 | "level of the WAVE_MAPPER device."); | |
f60ae425 BK |
972 | } |
973 | } | |
974 | return i_result; | |
975 | } | |
976 | ||
977 | /* END: Windows specific functions */ | |
978 | ||
979 | #endif /* WINDOWSNT */ | |
980 | ||
f60ae425 BK |
981 | DEFUN ("play-sound-internal", Fplay_sound_internal, Splay_sound_internal, 1, 1, 0, |
982 | doc: /* Play sound SOUND. | |
983 | ||
984 | Internal use only, use `play-sound' instead.\n */) | |
985 | (sound) | |
986 | Lisp_Object sound; | |
987 | { | |
988 | Lisp_Object attrs[SOUND_ATTR_SENTINEL]; | |
989 | int count = SPECPDL_INDEX (); | |
990 | ||
991 | #ifndef WINDOWSNT | |
992 | Lisp_Object file; | |
993 | struct gcpro gcpro1, gcpro2; | |
994 | struct sound_device sd; | |
995 | struct sound s; | |
996 | Lisp_Object args[2]; | |
997 | #else /* WINDOWSNT */ | |
06c3eeed JB |
998 | int len = 0; |
999 | Lisp_Object lo_file = {0}; | |
1000 | char * psz_file = NULL; | |
1001 | unsigned long ui_volume_tmp = UINT_MAX; | |
1002 | unsigned long ui_volume = UINT_MAX; | |
1003 | int i_result = 0; | |
f60ae425 BK |
1004 | #endif /* WINDOWSNT */ |
1005 | ||
1006 | /* Parse the sound specification. Give up if it is invalid. */ | |
1007 | if (!parse_sound (sound, attrs)) | |
1008 | error ("Invalid sound specification"); | |
1009 | ||
1010 | #ifndef WINDOWSNT | |
1011 | file = Qnil; | |
1012 | GCPRO2 (sound, file); | |
1013 | bzero (&sd, sizeof sd); | |
1014 | bzero (&s, sizeof s); | |
1015 | current_sound_device = &sd; | |
1016 | current_sound = &s; | |
1017 | record_unwind_protect (sound_cleanup, Qnil); | |
1018 | s.header = (char *) alloca (MAX_SOUND_HEADER_BYTES); | |
1019 | ||
1020 | if (STRINGP (attrs[SOUND_FILE])) | |
1021 | { | |
1022 | /* Open the sound file. */ | |
1023 | s.fd = openp (Fcons (Vdata_directory, Qnil), | |
1024 | attrs[SOUND_FILE], Qnil, &file, Qnil); | |
1025 | if (s.fd < 0) | |
1026 | sound_perror ("Could not open sound file"); | |
1027 | ||
1028 | /* Read the first bytes from the file. */ | |
1029 | s.header_size = emacs_read (s.fd, s.header, MAX_SOUND_HEADER_BYTES); | |
1030 | if (s.header_size < 0) | |
1031 | sound_perror ("Invalid sound file header"); | |
1032 | } | |
1033 | else | |
1034 | { | |
1035 | s.data = attrs[SOUND_DATA]; | |
1036 | s.header_size = min (MAX_SOUND_HEADER_BYTES, SBYTES (s.data)); | |
1037 | bcopy (SDATA (s.data), s.header, s.header_size); | |
1038 | } | |
1039 | ||
1040 | /* Find out the type of sound. Give up if we can't tell. */ | |
1041 | find_sound_type (&s); | |
1042 | ||
1043 | /* Set up a device. */ | |
1044 | if (STRINGP (attrs[SOUND_DEVICE])) | |
1045 | { | |
1046 | int len = SCHARS (attrs[SOUND_DEVICE]); | |
1047 | sd.file = (char *) alloca (len + 1); | |
1048 | strcpy (sd.file, SDATA (attrs[SOUND_DEVICE])); | |
1049 | } | |
1050 | ||
1051 | if (INTEGERP (attrs[SOUND_VOLUME])) | |
1052 | sd.volume = XFASTINT (attrs[SOUND_VOLUME]); | |
1053 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
1054 | sd.volume = XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; | |
7840ced1 | 1055 | |
f60ae425 BK |
1056 | args[0] = Qplay_sound_functions; |
1057 | args[1] = sound; | |
1058 | Frun_hook_with_args (2, args); | |
1059 | ||
1060 | /* There is only one type of device we currently support, the VOX | |
1061 | sound driver. Set up the device interface functions for that | |
1062 | device. */ | |
1063 | vox_init (&sd); | |
1064 | ||
1065 | /* Open the device. */ | |
1066 | sd.open (&sd); | |
1067 | ||
1068 | /* Play the sound. */ | |
1069 | s.play (&s, &sd); | |
1070 | ||
1071 | /* Close the input file, if any. */ | |
1072 | if (!STRINGP (s.data)) | |
1073 | { | |
1074 | emacs_close (s.fd); | |
1075 | s.fd = -1; | |
1076 | } | |
1077 | ||
1078 | /* Close the device. */ | |
1079 | sd.close (&sd); | |
1080 | ||
1081 | /* Clean up. */ | |
1082 | current_sound_device = NULL; | |
1083 | current_sound = NULL; | |
1084 | UNGCPRO; | |
06c3eeed | 1085 | |
f60ae425 | 1086 | #else /* WINDOWSNT */ |
06c3eeed JB |
1087 | |
1088 | lo_file = Fexpand_file_name (attrs[SOUND_FILE], Qnil); | |
1089 | len = XSTRING (lo_file)->size; | |
1090 | psz_file = (char *) alloca (len + 1); | |
f60ae425 BK |
1091 | strcpy (psz_file, XSTRING (lo_file)->data); |
1092 | if (INTEGERP (attrs[SOUND_VOLUME])) | |
1093 | { | |
06c3eeed | 1094 | ui_volume_tmp = XFASTINT (attrs[SOUND_VOLUME]); |
f60ae425 BK |
1095 | } |
1096 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
1097 | { | |
06c3eeed | 1098 | ui_volume_tmp = (unsigned long) XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; |
f60ae425 BK |
1099 | } |
1100 | /* | |
1101 | Based on some experiments I have conducted, a value of 100 or less | |
1102 | for the sound volume is much too low. You cannot even hear it. | |
1103 | A value of UINT_MAX indicates that you wish for the sound to played | |
1104 | at the maximum possible volume. A value of UINT_MAX/2 plays the | |
1105 | sound at 50% maximum volume. Therefore the value passed to do_play_sound | |
06c3eeed | 1106 | (and thus to waveOutSetVolume) must be some fraction of UINT_MAX. |
f60ae425 | 1107 | The following code adjusts the user specified volume level appropriately. |
06c3eeed | 1108 | */ |
f60ae425 BK |
1109 | if ((ui_volume_tmp > 0) && (ui_volume_tmp <= 100)) |
1110 | { | |
06c3eeed | 1111 | ui_volume = ui_volume_tmp * (UINT_MAX / 100); |
f60ae425 | 1112 | } |
06c3eeed JB |
1113 | i_result = do_play_sound (psz_file, ui_volume); |
1114 | ||
f60ae425 | 1115 | #endif /* WINDOWSNT */ |
06c3eeed | 1116 | |
f60ae425 BK |
1117 | unbind_to (count, Qnil); |
1118 | return Qnil; | |
1119 | } | |
7840ced1 GM |
1120 | \f |
1121 | /*********************************************************************** | |
1122 | Initialization | |
1123 | ***********************************************************************/ | |
1124 | ||
1125 | void | |
1126 | syms_of_sound () | |
1127 | { | |
1128 | QCdevice = intern (":device"); | |
1129 | staticpro (&QCdevice); | |
1130 | QCvolume = intern (":volume"); | |
1131 | staticpro (&QCvolume); | |
1132 | Qsound = intern ("sound"); | |
1133 | staticpro (&Qsound); | |
2a53558d GM |
1134 | Qplay_sound_functions = intern ("play-sound-functions"); |
1135 | staticpro (&Qplay_sound_functions); | |
7840ced1 | 1136 | |
14e415e7 | 1137 | defsubr (&Splay_sound_internal); |
7840ced1 GM |
1138 | } |
1139 | ||
1140 | ||
1141 | void | |
1142 | init_sound () | |
1143 | { | |
1144 | } | |
1145 | ||
1146 | #endif /* HAVE_SOUND */ | |
ab5796a9 MB |
1147 | |
1148 | /* arch-tag: dd850ad8-0433-4e2c-9cba-b7aeeccc0dbd | |
1149 | (do not change this comment) */ |