Commit | Line | Data |
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7840ced1 | 1 | /* sound.c -- sound support. |
0b5538bd | 2 | Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004, |
8cabe764 | 3 | 2005, 2006, 2007, 2008 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 | |
684d6f5b | 9 | the Free Software Foundation; either version 3, or (at your option) |
7840ced1 GM |
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 | |
2d2643f6 | 76 | #ifdef HAVE_ALSA |
1d30a597 JD |
77 | #ifdef ALSA_SUBDIR_INCLUDE |
78 | #include <alsa/asoundlib.h> | |
79 | #else | |
2d2643f6 | 80 | #include <asoundlib.h> |
1d30a597 JD |
81 | #endif /* ALSA_SUBDIR_INCLUDE */ |
82 | #endif /* HAVE_ALSA */ | |
2d2643f6 | 83 | |
f60ae425 BK |
84 | /* END: Non Windows Includes */ |
85 | ||
86 | #else /* WINDOWSNT */ | |
87 | ||
88 | /* BEGIN: Windows Specific Includes */ | |
89 | #include <stdio.h> | |
90 | #include <stdlib.h> | |
91 | #include <string.h> | |
92 | #include <limits.h> | |
93 | #include <windows.h> | |
94 | #include <mmsystem.h> | |
95 | /* END: Windows Specific Includes */ | |
96 | ||
97 | #endif /* WINDOWSNT */ | |
98 | ||
99 | /* BEGIN: Common Definitions */ | |
f60ae425 BK |
100 | |
101 | /* Symbols. */ | |
102 | ||
103 | extern Lisp_Object QCfile, QCdata; | |
104 | Lisp_Object QCvolume, QCdevice; | |
105 | Lisp_Object Qsound; | |
106 | Lisp_Object Qplay_sound_functions; | |
107 | ||
108 | /* Indices of attributes in a sound attributes vector. */ | |
109 | ||
110 | enum sound_attr | |
111 | { | |
112 | SOUND_FILE, | |
113 | SOUND_DATA, | |
114 | SOUND_DEVICE, | |
115 | SOUND_VOLUME, | |
116 | SOUND_ATTR_SENTINEL | |
117 | }; | |
118 | ||
01d09305 DN |
119 | static void alsa_sound_perror P_ ((char *, int)) NO_RETURN; |
120 | static void sound_perror P_ ((char *)) NO_RETURN; | |
f60ae425 BK |
121 | static void sound_warning P_ ((char *)); |
122 | static int parse_sound P_ ((Lisp_Object, Lisp_Object *)); | |
123 | ||
124 | /* END: Common Definitions */ | |
125 | ||
126 | /* BEGIN: Non Windows Definitions */ | |
127 | #ifndef WINDOWSNT | |
80fcd514 KR |
128 | |
129 | #ifndef DEFAULT_SOUND_DEVICE | |
130 | #define DEFAULT_SOUND_DEVICE "/dev/dsp" | |
131 | #endif | |
2d2643f6 JD |
132 | #ifndef DEFAULT_ALSA_SOUND_DEVICE |
133 | #define DEFAULT_ALSA_SOUND_DEVICE "default" | |
134 | #endif | |
7840ced1 | 135 | |
7840ced1 GM |
136 | |
137 | /* Structure forward declarations. */ | |
138 | ||
d1299cde | 139 | struct sound; |
7840ced1 GM |
140 | struct sound_device; |
141 | ||
142 | /* The file header of RIFF-WAVE files (*.wav). Files are always in | |
143 | little-endian byte-order. */ | |
144 | ||
145 | struct wav_header | |
146 | { | |
147 | u_int32_t magic; | |
148 | u_int32_t length; | |
149 | u_int32_t chunk_type; | |
150 | u_int32_t chunk_format; | |
151 | u_int32_t chunk_length; | |
152 | u_int16_t format; | |
153 | u_int16_t channels; | |
154 | u_int32_t sample_rate; | |
155 | u_int32_t bytes_per_second; | |
156 | u_int16_t sample_size; | |
157 | u_int16_t precision; | |
158 | u_int32_t chunk_data; | |
159 | u_int32_t data_length; | |
160 | }; | |
161 | ||
162 | /* The file header of Sun adio files (*.au). Files are always in | |
163 | big-endian byte-order. */ | |
164 | ||
165 | struct au_header | |
166 | { | |
167 | /* ASCII ".snd" */ | |
168 | u_int32_t magic_number; | |
a4ff5d67 | 169 | |
7840ced1 GM |
170 | /* Offset of data part from start of file. Minimum value is 24. */ |
171 | u_int32_t data_offset; | |
a4ff5d67 | 172 | |
7840ced1 GM |
173 | /* Size of data part, 0xffffffff if unknown. */ |
174 | u_int32_t data_size; | |
175 | ||
176 | /* Data encoding format. | |
177 | 1 8-bit ISDN u-law | |
178 | 2 8-bit linear PCM (REF-PCM) | |
179 | 3 16-bit linear PCM | |
180 | 4 24-bit linear PCM | |
181 | 5 32-bit linear PCM | |
182 | 6 32-bit IEEE floating-point | |
183 | 7 64-bit IEEE floating-point | |
184 | 23 8-bit u-law compressed using CCITT 0.721 ADPCM voice data | |
185 | encoding scheme. */ | |
186 | u_int32_t encoding; | |
187 | ||
188 | /* Number of samples per second. */ | |
189 | u_int32_t sample_rate; | |
190 | ||
191 | /* Number of interleaved channels. */ | |
192 | u_int32_t channels; | |
193 | }; | |
194 | ||
195 | /* Maximum of all sound file headers sizes. */ | |
196 | ||
197 | #define MAX_SOUND_HEADER_BYTES \ | |
198 | max (sizeof (struct wav_header), sizeof (struct au_header)) | |
199 | ||
200 | /* Interface structure for sound devices. */ | |
201 | ||
202 | struct sound_device | |
203 | { | |
204 | /* The name of the device or null meaning use a default device name. */ | |
205 | char *file; | |
206 | ||
207 | /* File descriptor of the device. */ | |
208 | int fd; | |
209 | ||
210 | /* Device-dependent format. */ | |
211 | int format; | |
212 | ||
213 | /* Volume (0..100). Zero means unspecified. */ | |
214 | int volume; | |
215 | ||
216 | /* Sample size. */ | |
217 | int sample_size; | |
218 | ||
219 | /* Sample rate. */ | |
220 | int sample_rate; | |
221 | ||
222 | /* Bytes per second. */ | |
223 | int bps; | |
224 | ||
225 | /* 1 = mono, 2 = stereo, 0 = don't set. */ | |
226 | int channels; | |
a4ff5d67 | 227 | |
7840ced1 GM |
228 | /* Open device SD. */ |
229 | void (* open) P_ ((struct sound_device *sd)); | |
230 | ||
231 | /* Close device SD. */ | |
232 | void (* close) P_ ((struct sound_device *sd)); | |
233 | ||
234 | /* Configure SD accoring to device-dependent parameters. */ | |
235 | void (* configure) P_ ((struct sound_device *device)); | |
a4ff5d67 | 236 | |
d1299cde | 237 | /* Choose a device-dependent format for outputting sound S. */ |
7840ced1 | 238 | void (* choose_format) P_ ((struct sound_device *sd, |
d1299cde | 239 | struct sound *s)); |
7840ced1 | 240 | |
2d2643f6 JD |
241 | /* Return a preferred data size in bytes to be sent to write (below) |
242 | each time. 2048 is used if this is NULL. */ | |
243 | int (* period_size) P_ ((struct sound_device *sd)); | |
244 | ||
7840ced1 | 245 | /* Write NYBTES bytes from BUFFER to device SD. */ |
dca0fc1c KR |
246 | void (* write) P_ ((struct sound_device *sd, const char *buffer, |
247 | int nbytes)); | |
7840ced1 GM |
248 | |
249 | /* A place for devices to store additional data. */ | |
250 | void *data; | |
251 | }; | |
252 | ||
253 | /* An enumerator for each supported sound file type. */ | |
254 | ||
255 | enum sound_type | |
256 | { | |
257 | RIFF, | |
258 | SUN_AUDIO | |
259 | }; | |
260 | ||
261 | /* Interface structure for sound files. */ | |
262 | ||
d1299cde | 263 | struct sound |
7840ced1 GM |
264 | { |
265 | /* The type of the file. */ | |
266 | enum sound_type type; | |
267 | ||
d1299cde | 268 | /* File descriptor of a sound file. */ |
7840ced1 GM |
269 | int fd; |
270 | ||
d1299cde GM |
271 | /* Pointer to sound file header. This contains header_size bytes |
272 | read from the start of a sound file. */ | |
7840ced1 GM |
273 | char *header; |
274 | ||
d1299cde GM |
275 | /* Number of bytes raed from sound file. This is always <= |
276 | MAX_SOUND_HEADER_BYTES. */ | |
277 | int header_size; | |
278 | ||
279 | /* Sound data, if a string. */ | |
280 | Lisp_Object data; | |
281 | ||
282 | /* Play sound file S on device SD. */ | |
a4ff5d67 | 283 | void (* play) P_ ((struct sound *s, struct sound_device *sd)); |
7840ced1 GM |
284 | }; |
285 | ||
14e415e7 | 286 | /* These are set during `play-sound-internal' so that sound_cleanup has |
7840ced1 GM |
287 | access to them. */ |
288 | ||
d1299cde GM |
289 | struct sound_device *current_sound_device; |
290 | struct sound *current_sound; | |
7840ced1 GM |
291 | |
292 | /* Function prototypes. */ | |
293 | ||
294 | static void vox_open P_ ((struct sound_device *)); | |
295 | static void vox_configure P_ ((struct sound_device *)); | |
296 | static void vox_close P_ ((struct sound_device *sd)); | |
d1299cde | 297 | static void vox_choose_format P_ ((struct sound_device *, struct sound *)); |
2d2643f6 | 298 | static int vox_init P_ ((struct sound_device *)); |
dca0fc1c | 299 | static void vox_write P_ ((struct sound_device *, const char *, int)); |
d1299cde | 300 | static void find_sound_type P_ ((struct sound *)); |
7840ced1 GM |
301 | static u_int32_t le2hl P_ ((u_int32_t)); |
302 | static u_int16_t le2hs P_ ((u_int16_t)); | |
303 | static u_int32_t be2hl P_ ((u_int32_t)); | |
d1299cde GM |
304 | static int wav_init P_ ((struct sound *)); |
305 | static void wav_play P_ ((struct sound *, struct sound_device *)); | |
306 | static int au_init P_ ((struct sound *)); | |
307 | static void au_play P_ ((struct sound *, struct sound_device *)); | |
7840ced1 | 308 | |
9680b9d0 GM |
309 | #if 0 /* Currently not used. */ |
310 | static u_int16_t be2hs P_ ((u_int16_t)); | |
311 | #endif | |
312 | ||
f60ae425 BK |
313 | /* END: Non Windows Definitions */ |
314 | #else /* WINDOWSNT */ | |
315 | ||
316 | /* BEGIN: Windows Specific Definitions */ | |
317 | static int do_play_sound P_ ((const char *, unsigned long)); | |
318 | /* | |
319 | END: Windows Specific Definitions */ | |
320 | #endif /* WINDOWSNT */ | |
7840ced1 GM |
321 | |
322 | \f | |
323 | /*********************************************************************** | |
324 | General | |
325 | ***********************************************************************/ | |
326 | ||
f60ae425 BK |
327 | /* BEGIN: Common functions */ |
328 | ||
7840ced1 GM |
329 | /* Like perror, but signals an error. */ |
330 | ||
331 | static void | |
332 | sound_perror (msg) | |
333 | char *msg; | |
334 | { | |
3297e2a1 AS |
335 | int saved_errno = errno; |
336 | ||
62725a92 GM |
337 | turn_on_atimers (1); |
338 | #ifdef SIGIO | |
339 | sigunblock (sigmask (SIGIO)); | |
340 | #endif | |
3297e2a1 AS |
341 | if (saved_errno != 0) |
342 | error ("%s: %s", msg, strerror (saved_errno)); | |
62725a92 GM |
343 | else |
344 | error ("%s", msg); | |
345 | } | |
346 | ||
347 | ||
348 | /* Display a warning message. */ | |
349 | ||
350 | static void | |
351 | sound_warning (msg) | |
352 | char *msg; | |
353 | { | |
354 | message (msg); | |
7840ced1 GM |
355 | } |
356 | ||
357 | ||
358 | /* Parse sound specification SOUND, and fill ATTRS with what is | |
359 | found. Value is non-zero if SOUND Is a valid sound specification. | |
360 | A valid sound specification is a list starting with the symbol | |
361 | `sound'. The rest of the list is a property list which may | |
362 | contain the following key/value pairs: | |
363 | ||
364 | - `:file FILE' | |
365 | ||
366 | FILE is the sound file to play. If it isn't an absolute name, | |
367 | it's searched under `data-directory'. | |
368 | ||
d1299cde GM |
369 | - `:data DATA' |
370 | ||
371 | DATA is a string containing sound data. Either :file or :data | |
372 | may be present, but not both. | |
373 | ||
7840ced1 GM |
374 | - `:device DEVICE' |
375 | ||
376 | DEVICE is the name of the device to play on, e.g. "/dev/dsp2". | |
377 | If not specified, a default device is used. | |
378 | ||
379 | - `:volume VOL' | |
380 | ||
2a53558d GM |
381 | VOL must be an integer in the range [0, 100], or a float in the |
382 | range [0, 1]. */ | |
7840ced1 GM |
383 | |
384 | static int | |
385 | parse_sound (sound, attrs) | |
386 | Lisp_Object sound; | |
387 | Lisp_Object *attrs; | |
388 | { | |
389 | /* SOUND must be a list starting with the symbol `sound'. */ | |
390 | if (!CONSP (sound) || !EQ (XCAR (sound), Qsound)) | |
391 | return 0; | |
392 | ||
393 | sound = XCDR (sound); | |
394 | attrs[SOUND_FILE] = Fplist_get (sound, QCfile); | |
d1299cde | 395 | attrs[SOUND_DATA] = Fplist_get (sound, QCdata); |
7840ced1 GM |
396 | attrs[SOUND_DEVICE] = Fplist_get (sound, QCdevice); |
397 | attrs[SOUND_VOLUME] = Fplist_get (sound, QCvolume); | |
398 | ||
f60ae425 | 399 | #ifndef WINDOWSNT |
d1299cde GM |
400 | /* File name or data must be specified. */ |
401 | if (!STRINGP (attrs[SOUND_FILE]) | |
402 | && !STRINGP (attrs[SOUND_DATA])) | |
7840ced1 | 403 | return 0; |
f60ae425 BK |
404 | #else /* WINDOWSNT */ |
405 | /* | |
406 | Data is not supported in Windows. Therefore a | |
407 | File name MUST be supplied. | |
408 | */ | |
409 | if (!STRINGP (attrs[SOUND_FILE])) | |
410 | { | |
411 | return 0; | |
412 | } | |
413 | #endif /* WINDOWSNT */ | |
7840ced1 GM |
414 | |
415 | /* Volume must be in the range 0..100 or unspecified. */ | |
416 | if (!NILP (attrs[SOUND_VOLUME])) | |
417 | { | |
2a53558d GM |
418 | if (INTEGERP (attrs[SOUND_VOLUME])) |
419 | { | |
420 | if (XINT (attrs[SOUND_VOLUME]) < 0 | |
421 | || XINT (attrs[SOUND_VOLUME]) > 100) | |
422 | return 0; | |
423 | } | |
424 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
425 | { | |
426 | if (XFLOAT_DATA (attrs[SOUND_VOLUME]) < 0 | |
427 | || XFLOAT_DATA (attrs[SOUND_VOLUME]) > 1) | |
428 | return 0; | |
429 | } | |
430 | else | |
7840ced1 GM |
431 | return 0; |
432 | } | |
433 | ||
f60ae425 | 434 | #ifndef WINDOWSNT |
7840ced1 GM |
435 | /* Device must be a string or unspecified. */ |
436 | if (!NILP (attrs[SOUND_DEVICE]) | |
437 | && !STRINGP (attrs[SOUND_DEVICE])) | |
438 | return 0; | |
f60ae425 BK |
439 | #endif /* WINDOWSNT */ |
440 | /* | |
441 | Since device is ignored in Windows, it does not matter | |
442 | what it is. | |
443 | */ | |
7840ced1 GM |
444 | return 1; |
445 | } | |
446 | ||
f60ae425 BK |
447 | /* END: Common functions */ |
448 | ||
449 | /* BEGIN: Non Windows functions */ | |
450 | #ifndef WINDOWSNT | |
7840ced1 GM |
451 | |
452 | /* Find out the type of the sound file whose file descriptor is FD. | |
d1299cde | 453 | S is the sound file structure to fill in. */ |
7840ced1 GM |
454 | |
455 | static void | |
d1299cde GM |
456 | find_sound_type (s) |
457 | struct sound *s; | |
7840ced1 | 458 | { |
d1299cde GM |
459 | if (!wav_init (s) && !au_init (s)) |
460 | error ("Unknown sound format"); | |
7840ced1 GM |
461 | } |
462 | ||
463 | ||
14e415e7 | 464 | /* Function installed by play-sound-internal with record_unwind_protect. */ |
7840ced1 GM |
465 | |
466 | static Lisp_Object | |
467 | sound_cleanup (arg) | |
468 | Lisp_Object arg; | |
469 | { | |
8e6ec322 RS |
470 | if (current_sound_device->close) |
471 | current_sound_device->close (current_sound_device); | |
472 | if (current_sound->fd > 0) | |
473 | emacs_close (current_sound->fd); | |
474 | free (current_sound_device); | |
475 | free (current_sound); | |
3887b449 GM |
476 | |
477 | return Qnil; | |
7840ced1 GM |
478 | } |
479 | ||
7840ced1 GM |
480 | /*********************************************************************** |
481 | Byte-order Conversion | |
482 | ***********************************************************************/ | |
483 | ||
484 | /* Convert 32-bit value VALUE which is in little-endian byte-order | |
485 | to host byte-order. */ | |
486 | ||
487 | static u_int32_t | |
488 | le2hl (value) | |
489 | u_int32_t value; | |
490 | { | |
491 | #ifdef WORDS_BIG_ENDIAN | |
492 | unsigned char *p = (unsigned char *) &value; | |
493 | value = p[0] + (p[1] << 8) + (p[2] << 16) + (p[3] << 24); | |
494 | #endif | |
495 | return value; | |
496 | } | |
497 | ||
498 | ||
499 | /* Convert 16-bit value VALUE which is in little-endian byte-order | |
500 | to host byte-order. */ | |
501 | ||
502 | static u_int16_t | |
503 | le2hs (value) | |
504 | u_int16_t value; | |
505 | { | |
506 | #ifdef WORDS_BIG_ENDIAN | |
507 | unsigned char *p = (unsigned char *) &value; | |
508 | value = p[0] + (p[1] << 8); | |
509 | #endif | |
510 | return value; | |
511 | } | |
512 | ||
513 | ||
514 | /* Convert 32-bit value VALUE which is in big-endian byte-order | |
515 | to host byte-order. */ | |
516 | ||
517 | static u_int32_t | |
518 | be2hl (value) | |
519 | u_int32_t value; | |
520 | { | |
521 | #ifndef WORDS_BIG_ENDIAN | |
522 | unsigned char *p = (unsigned char *) &value; | |
523 | value = p[3] + (p[2] << 8) + (p[1] << 16) + (p[0] << 24); | |
524 | #endif | |
525 | return value; | |
526 | } | |
527 | ||
528 | ||
9680b9d0 GM |
529 | #if 0 /* Currently not used. */ |
530 | ||
7840ced1 GM |
531 | /* Convert 16-bit value VALUE which is in big-endian byte-order |
532 | to host byte-order. */ | |
533 | ||
534 | static u_int16_t | |
535 | be2hs (value) | |
536 | u_int16_t value; | |
537 | { | |
538 | #ifndef WORDS_BIG_ENDIAN | |
539 | unsigned char *p = (unsigned char *) &value; | |
540 | value = p[1] + (p[0] << 8); | |
541 | #endif | |
542 | return value; | |
543 | } | |
544 | ||
9680b9d0 | 545 | #endif /* 0 */ |
7840ced1 | 546 | |
7840ced1 GM |
547 | /*********************************************************************** |
548 | RIFF-WAVE (*.wav) | |
549 | ***********************************************************************/ | |
550 | ||
d1299cde | 551 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
552 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
553 | sound file. If the file is a WAV-format file, set up interface | |
d1299cde | 554 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
555 | Value is non-zero if the file is a WAV file. */ |
556 | ||
557 | static int | |
d1299cde GM |
558 | wav_init (s) |
559 | struct sound *s; | |
7840ced1 | 560 | { |
d1299cde GM |
561 | struct wav_header *header = (struct wav_header *) s->header; |
562 | ||
563 | if (s->header_size < sizeof *header | |
564 | || bcmp (s->header, "RIFF", 4) != 0) | |
7840ced1 GM |
565 | return 0; |
566 | ||
567 | /* WAV files are in little-endian order. Convert the header | |
568 | if on a big-endian machine. */ | |
569 | header->magic = le2hl (header->magic); | |
570 | header->length = le2hl (header->length); | |
571 | header->chunk_type = le2hl (header->chunk_type); | |
572 | header->chunk_format = le2hl (header->chunk_format); | |
573 | header->chunk_length = le2hl (header->chunk_length); | |
574 | header->format = le2hs (header->format); | |
575 | header->channels = le2hs (header->channels); | |
576 | header->sample_rate = le2hl (header->sample_rate); | |
577 | header->bytes_per_second = le2hl (header->bytes_per_second); | |
578 | header->sample_size = le2hs (header->sample_size); | |
579 | header->precision = le2hs (header->precision); | |
580 | header->chunk_data = le2hl (header->chunk_data); | |
581 | header->data_length = le2hl (header->data_length); | |
582 | ||
583 | /* Set up the interface functions for WAV. */ | |
d1299cde GM |
584 | s->type = RIFF; |
585 | s->play = wav_play; | |
7840ced1 GM |
586 | |
587 | return 1; | |
a4ff5d67 | 588 | } |
7840ced1 GM |
589 | |
590 | ||
d1299cde | 591 | /* Play RIFF-WAVE audio file S on sound device SD. */ |
7840ced1 GM |
592 | |
593 | static void | |
d1299cde GM |
594 | wav_play (s, sd) |
595 | struct sound *s; | |
7840ced1 GM |
596 | struct sound_device *sd; |
597 | { | |
d1299cde | 598 | struct wav_header *header = (struct wav_header *) s->header; |
7840ced1 GM |
599 | |
600 | /* Let the device choose a suitable device-dependent format | |
601 | for the file. */ | |
d1299cde | 602 | sd->choose_format (sd, s); |
a4ff5d67 | 603 | |
7840ced1 GM |
604 | /* Configure the device. */ |
605 | sd->sample_size = header->sample_size; | |
606 | sd->sample_rate = header->sample_rate; | |
607 | sd->bps = header->bytes_per_second; | |
608 | sd->channels = header->channels; | |
609 | sd->configure (sd); | |
610 | ||
611 | /* Copy sound data to the device. The WAV file specification is | |
612 | actually more complex. This simple scheme worked with all WAV | |
613 | files I found so far. If someone feels inclined to implement the | |
614 | whole RIFF-WAVE spec, please do. */ | |
d1299cde | 615 | if (STRINGP (s->data)) |
d5db4077 KR |
616 | sd->write (sd, SDATA (s->data) + sizeof *header, |
617 | SBYTES (s->data) - sizeof *header); | |
d1299cde GM |
618 | else |
619 | { | |
620 | char *buffer; | |
621 | int nbytes; | |
2d2643f6 | 622 | int blksize = sd->period_size ? sd->period_size (sd) : 2048; |
a28de257 | 623 | int data_left = header->data_length; |
a4ff5d67 | 624 | |
d1299cde GM |
625 | buffer = (char *) alloca (blksize); |
626 | lseek (s->fd, sizeof *header, SEEK_SET); | |
a28de257 JD |
627 | while (data_left > 0 |
628 | && (nbytes = emacs_read (s->fd, buffer, blksize)) > 0) | |
629 | { | |
630 | /* Don't play possible garbage at the end of file */ | |
631 | if (data_left < nbytes) nbytes = data_left; | |
632 | data_left -= nbytes; | |
633 | sd->write (sd, buffer, nbytes); | |
634 | } | |
7840ced1 | 635 | |
d1299cde | 636 | if (nbytes < 0) |
62725a92 | 637 | sound_perror ("Error reading sound file"); |
d1299cde | 638 | } |
7840ced1 GM |
639 | } |
640 | ||
641 | ||
7840ced1 GM |
642 | /*********************************************************************** |
643 | Sun Audio (*.au) | |
644 | ***********************************************************************/ | |
645 | ||
a4ff5d67 | 646 | /* Sun audio file encodings. */ |
7840ced1 GM |
647 | |
648 | enum au_encoding | |
649 | { | |
650 | AU_ENCODING_ULAW_8 = 1, | |
651 | AU_ENCODING_8, | |
652 | AU_ENCODING_16, | |
653 | AU_ENCODING_24, | |
654 | AU_ENCODING_32, | |
655 | AU_ENCODING_IEEE32, | |
656 | AU_ENCODING_IEEE64, | |
2d2643f6 JD |
657 | AU_COMPRESSED = 23, |
658 | AU_ENCODING_ALAW_8 = 27 | |
7840ced1 GM |
659 | }; |
660 | ||
661 | ||
d1299cde | 662 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
663 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
664 | sound file. If the file is a AU-format file, set up interface | |
d1299cde | 665 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
666 | Value is non-zero if the file is an AU file. */ |
667 | ||
668 | static int | |
d1299cde GM |
669 | au_init (s) |
670 | struct sound *s; | |
7840ced1 | 671 | { |
d1299cde | 672 | struct au_header *header = (struct au_header *) s->header; |
a4ff5d67 | 673 | |
d1299cde GM |
674 | if (s->header_size < sizeof *header |
675 | || bcmp (s->header, ".snd", 4) != 0) | |
7840ced1 | 676 | return 0; |
a4ff5d67 | 677 | |
7840ced1 GM |
678 | header->magic_number = be2hl (header->magic_number); |
679 | header->data_offset = be2hl (header->data_offset); | |
680 | header->data_size = be2hl (header->data_size); | |
681 | header->encoding = be2hl (header->encoding); | |
682 | header->sample_rate = be2hl (header->sample_rate); | |
683 | header->channels = be2hl (header->channels); | |
a4ff5d67 | 684 | |
7840ced1 | 685 | /* Set up the interface functions for AU. */ |
d1299cde GM |
686 | s->type = SUN_AUDIO; |
687 | s->play = au_play; | |
7840ced1 GM |
688 | |
689 | return 1; | |
690 | } | |
691 | ||
692 | ||
d1299cde | 693 | /* Play Sun audio file S on sound device SD. */ |
7840ced1 GM |
694 | |
695 | static void | |
d1299cde GM |
696 | au_play (s, sd) |
697 | struct sound *s; | |
7840ced1 GM |
698 | struct sound_device *sd; |
699 | { | |
d1299cde | 700 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
701 | |
702 | sd->sample_size = 0; | |
703 | sd->sample_rate = header->sample_rate; | |
704 | sd->bps = 0; | |
705 | sd->channels = header->channels; | |
d1299cde | 706 | sd->choose_format (sd, s); |
7840ced1 | 707 | sd->configure (sd); |
d1299cde GM |
708 | |
709 | if (STRINGP (s->data)) | |
d5db4077 KR |
710 | sd->write (sd, SDATA (s->data) + header->data_offset, |
711 | SBYTES (s->data) - header->data_offset); | |
d1299cde GM |
712 | else |
713 | { | |
2d2643f6 | 714 | int blksize = sd->period_size ? sd->period_size (sd) : 2048; |
d1299cde GM |
715 | char *buffer; |
716 | int nbytes; | |
a4ff5d67 | 717 | |
d1299cde GM |
718 | /* Seek */ |
719 | lseek (s->fd, header->data_offset, SEEK_SET); | |
a4ff5d67 | 720 | |
d1299cde GM |
721 | /* Copy sound data to the device. */ |
722 | buffer = (char *) alloca (blksize); | |
723 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) | |
724 | sd->write (sd, buffer, nbytes); | |
a4ff5d67 | 725 | |
d1299cde | 726 | if (nbytes < 0) |
62725a92 | 727 | sound_perror ("Error reading sound file"); |
d1299cde | 728 | } |
7840ced1 GM |
729 | } |
730 | ||
731 | ||
7840ced1 GM |
732 | /*********************************************************************** |
733 | Voxware Driver Interface | |
734 | ***********************************************************************/ | |
735 | ||
736 | /* This driver is available on GNU/Linux, and the free BSDs. FreeBSD | |
737 | has a compatible own driver aka Luigi's driver. */ | |
738 | ||
739 | ||
740 | /* Open device SD. If SD->file is non-null, open that device, | |
741 | otherwise use a default device name. */ | |
742 | ||
743 | static void | |
744 | vox_open (sd) | |
745 | struct sound_device *sd; | |
746 | { | |
747 | char *file; | |
a4ff5d67 | 748 | |
7840ced1 GM |
749 | /* Open the sound device. Default is /dev/dsp. */ |
750 | if (sd->file) | |
751 | file = sd->file; | |
752 | else | |
80fcd514 | 753 | file = DEFAULT_SOUND_DEVICE; |
a4ff5d67 | 754 | |
68c45bf0 | 755 | sd->fd = emacs_open (file, O_WRONLY, 0); |
7840ced1 GM |
756 | if (sd->fd < 0) |
757 | sound_perror (file); | |
758 | } | |
759 | ||
760 | ||
761 | /* Configure device SD from parameters in it. */ | |
762 | ||
763 | static void | |
764 | vox_configure (sd) | |
765 | struct sound_device *sd; | |
766 | { | |
28fcb7dc | 767 | int val; |
a4ff5d67 | 768 | |
7840ced1 GM |
769 | xassert (sd->fd >= 0); |
770 | ||
bb6e8cee GM |
771 | /* On GNU/Linux, it seems that the device driver doesn't like to be |
772 | interrupted by a signal. Block the ones we know to cause | |
773 | troubles. */ | |
b5cb1ada | 774 | turn_on_atimers (0); |
bb6e8cee GM |
775 | #ifdef SIGIO |
776 | sigblock (sigmask (SIGIO)); | |
777 | #endif | |
b5cb1ada | 778 | |
28fcb7dc GM |
779 | val = sd->format; |
780 | if (ioctl (sd->fd, SNDCTL_DSP_SETFMT, &sd->format) < 0 | |
781 | || val != sd->format) | |
62725a92 | 782 | sound_perror ("Could not set sound format"); |
7840ced1 | 783 | |
28fcb7dc GM |
784 | val = sd->channels != 1; |
785 | if (ioctl (sd->fd, SNDCTL_DSP_STEREO, &val) < 0 | |
786 | || val != (sd->channels != 1)) | |
62725a92 | 787 | sound_perror ("Could not set stereo/mono"); |
7840ced1 | 788 | |
28fcb7dc GM |
789 | /* I think bps and sampling_rate are the same, but who knows. |
790 | Check this. and use SND_DSP_SPEED for both. */ | |
791 | if (sd->sample_rate > 0) | |
792 | { | |
793 | val = sd->sample_rate; | |
62725a92 GM |
794 | if (ioctl (sd->fd, SNDCTL_DSP_SPEED, &sd->sample_rate) < 0) |
795 | sound_perror ("Could not set sound speed"); | |
796 | else if (val != sd->sample_rate) | |
797 | sound_warning ("Could not set sample rate"); | |
28fcb7dc | 798 | } |
7840ced1 | 799 | |
3887b449 GM |
800 | if (sd->volume > 0) |
801 | { | |
802 | int volume = sd->volume & 0xff; | |
803 | volume |= volume << 8; | |
28fcb7dc GM |
804 | /* This may fail if there is no mixer. Ignore the failure. */ |
805 | ioctl (sd->fd, SOUND_MIXER_WRITE_PCM, &volume); | |
3887b449 | 806 | } |
a4ff5d67 | 807 | |
b5cb1ada | 808 | turn_on_atimers (1); |
bb6e8cee GM |
809 | #ifdef SIGIO |
810 | sigunblock (sigmask (SIGIO)); | |
811 | #endif | |
7840ced1 GM |
812 | } |
813 | ||
814 | ||
815 | /* Close device SD if it is open. */ | |
816 | ||
817 | static void | |
818 | vox_close (sd) | |
819 | struct sound_device *sd; | |
820 | { | |
821 | if (sd->fd >= 0) | |
822 | { | |
bb6e8cee GM |
823 | /* On GNU/Linux, it seems that the device driver doesn't like to |
824 | be interrupted by a signal. Block the ones we know to cause | |
825 | troubles. */ | |
826 | #ifdef SIGIO | |
827 | sigblock (sigmask (SIGIO)); | |
828 | #endif | |
b5cb1ada | 829 | turn_on_atimers (0); |
a4ff5d67 | 830 | |
bb6e8cee | 831 | /* Flush sound data, and reset the device. */ |
7840ced1 | 832 | ioctl (sd->fd, SNDCTL_DSP_SYNC, NULL); |
a4ff5d67 | 833 | |
b5cb1ada | 834 | turn_on_atimers (1); |
bb6e8cee GM |
835 | #ifdef SIGIO |
836 | sigunblock (sigmask (SIGIO)); | |
837 | #endif | |
7840ced1 GM |
838 | |
839 | /* Close the device. */ | |
68c45bf0 | 840 | emacs_close (sd->fd); |
7840ced1 GM |
841 | sd->fd = -1; |
842 | } | |
843 | } | |
844 | ||
845 | ||
d1299cde | 846 | /* Choose device-dependent format for device SD from sound file S. */ |
7840ced1 GM |
847 | |
848 | static void | |
d1299cde | 849 | vox_choose_format (sd, s) |
7840ced1 | 850 | struct sound_device *sd; |
d1299cde | 851 | struct sound *s; |
7840ced1 | 852 | { |
d1299cde | 853 | if (s->type == RIFF) |
7840ced1 | 854 | { |
d1299cde | 855 | struct wav_header *h = (struct wav_header *) s->header; |
7840ced1 GM |
856 | if (h->precision == 8) |
857 | sd->format = AFMT_U8; | |
858 | else if (h->precision == 16) | |
859 | sd->format = AFMT_S16_LE; | |
860 | else | |
861 | error ("Unsupported WAV file format"); | |
862 | } | |
d1299cde | 863 | else if (s->type == SUN_AUDIO) |
7840ced1 | 864 | { |
d1299cde | 865 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
866 | switch (header->encoding) |
867 | { | |
868 | case AU_ENCODING_ULAW_8: | |
869 | case AU_ENCODING_IEEE32: | |
870 | case AU_ENCODING_IEEE64: | |
871 | sd->format = AFMT_MU_LAW; | |
872 | break; | |
a4ff5d67 | 873 | |
7840ced1 GM |
874 | case AU_ENCODING_8: |
875 | case AU_ENCODING_16: | |
876 | case AU_ENCODING_24: | |
877 | case AU_ENCODING_32: | |
878 | sd->format = AFMT_S16_LE; | |
879 | break; | |
880 | ||
881 | default: | |
882 | error ("Unsupported AU file format"); | |
883 | } | |
884 | } | |
885 | else | |
886 | abort (); | |
887 | } | |
888 | ||
889 | ||
890 | /* Initialize device SD. Set up the interface functions in the device | |
891 | structure. */ | |
892 | ||
2d2643f6 | 893 | static int |
7840ced1 GM |
894 | vox_init (sd) |
895 | struct sound_device *sd; | |
896 | { | |
2d2643f6 JD |
897 | char *file; |
898 | int fd; | |
899 | ||
900 | /* Open the sound device. Default is /dev/dsp. */ | |
901 | if (sd->file) | |
902 | file = sd->file; | |
903 | else | |
904 | file = DEFAULT_SOUND_DEVICE; | |
905 | fd = emacs_open (file, O_WRONLY, 0); | |
906 | if (fd >= 0) | |
907 | emacs_close (fd); | |
908 | else | |
909 | return 0; | |
910 | ||
7840ced1 GM |
911 | sd->fd = -1; |
912 | sd->open = vox_open; | |
913 | sd->close = vox_close; | |
914 | sd->configure = vox_configure; | |
915 | sd->choose_format = vox_choose_format; | |
916 | sd->write = vox_write; | |
2d2643f6 JD |
917 | sd->period_size = NULL; |
918 | ||
919 | return 1; | |
7840ced1 GM |
920 | } |
921 | ||
7840ced1 GM |
922 | /* Write NBYTES bytes from BUFFER to device SD. */ |
923 | ||
924 | static void | |
925 | vox_write (sd, buffer, nbytes) | |
926 | struct sound_device *sd; | |
dca0fc1c | 927 | const char *buffer; |
7840ced1 GM |
928 | int nbytes; |
929 | { | |
68c45bf0 | 930 | int nwritten = emacs_write (sd->fd, buffer, nbytes); |
7840ced1 | 931 | if (nwritten < 0) |
62725a92 | 932 | sound_perror ("Error writing to sound device"); |
7840ced1 GM |
933 | } |
934 | ||
2d2643f6 JD |
935 | #ifdef HAVE_ALSA |
936 | /*********************************************************************** | |
937 | ALSA Driver Interface | |
938 | ***********************************************************************/ | |
939 | ||
940 | /* This driver is available on GNU/Linux. */ | |
941 | ||
942 | static void | |
943 | alsa_sound_perror (msg, err) | |
944 | char *msg; | |
945 | int err; | |
946 | { | |
947 | error ("%s: %s", msg, snd_strerror (err)); | |
948 | } | |
949 | ||
950 | struct alsa_params | |
951 | { | |
952 | snd_pcm_t *handle; | |
953 | snd_pcm_hw_params_t *hwparams; | |
954 | snd_pcm_sw_params_t *swparams; | |
955 | snd_pcm_uframes_t period_size; | |
956 | }; | |
957 | ||
958 | /* Open device SD. If SD->file is non-null, open that device, | |
959 | otherwise use a default device name. */ | |
960 | ||
961 | static void | |
962 | alsa_open (sd) | |
963 | struct sound_device *sd; | |
964 | { | |
965 | char *file; | |
966 | struct alsa_params *p; | |
967 | int err; | |
968 | ||
969 | /* Open the sound device. Default is "default". */ | |
970 | if (sd->file) | |
971 | file = sd->file; | |
972 | else | |
973 | file = DEFAULT_ALSA_SOUND_DEVICE; | |
974 | ||
975 | p = xmalloc (sizeof (*p)); | |
976 | p->handle = NULL; | |
977 | p->hwparams = NULL; | |
978 | p->swparams = NULL; | |
979 | ||
980 | sd->fd = -1; | |
981 | sd->data = p; | |
982 | ||
983 | ||
3fc7a865 JD |
984 | err = snd_pcm_open (&p->handle, file, SND_PCM_STREAM_PLAYBACK, 0); |
985 | if (err < 0) | |
2d2643f6 JD |
986 | alsa_sound_perror (file, err); |
987 | } | |
988 | ||
989 | static int | |
990 | alsa_period_size (sd) | |
991 | struct sound_device *sd; | |
992 | { | |
993 | struct alsa_params *p = (struct alsa_params *) sd->data; | |
a28de257 JD |
994 | int fact = snd_pcm_format_size (sd->format, 1) * sd->channels; |
995 | return p->period_size * (fact > 0 ? fact : 1); | |
2d2643f6 JD |
996 | } |
997 | ||
998 | static void | |
999 | alsa_configure (sd) | |
1000 | struct sound_device *sd; | |
1001 | { | |
1002 | int val, err, dir; | |
dcc88121 | 1003 | unsigned uval; |
2d2643f6 JD |
1004 | struct alsa_params *p = (struct alsa_params *) sd->data; |
1005 | snd_pcm_uframes_t buffer_size; | |
1006 | ||
1007 | xassert (p->handle != 0); | |
1008 | ||
3fc7a865 JD |
1009 | err = snd_pcm_hw_params_malloc (&p->hwparams); |
1010 | if (err < 0) | |
2d2643f6 JD |
1011 | alsa_sound_perror ("Could not allocate hardware parameter structure", err); |
1012 | ||
3fc7a865 JD |
1013 | err = snd_pcm_sw_params_malloc (&p->swparams); |
1014 | if (err < 0) | |
2d2643f6 JD |
1015 | alsa_sound_perror ("Could not allocate software parameter structure", err); |
1016 | ||
3fc7a865 JD |
1017 | err = snd_pcm_hw_params_any (p->handle, p->hwparams); |
1018 | if (err < 0) | |
2d2643f6 JD |
1019 | alsa_sound_perror ("Could not initialize hardware parameter structure", err); |
1020 | ||
3fc7a865 JD |
1021 | err = snd_pcm_hw_params_set_access (p->handle, p->hwparams, |
1022 | SND_PCM_ACCESS_RW_INTERLEAVED); | |
1023 | if (err < 0) | |
2d2643f6 JD |
1024 | alsa_sound_perror ("Could not set access type", err); |
1025 | ||
1026 | val = sd->format; | |
3fc7a865 | 1027 | err = snd_pcm_hw_params_set_format (p->handle, p->hwparams, val); |
ed1f0a45 | 1028 | if (err < 0) |
2d2643f6 JD |
1029 | alsa_sound_perror ("Could not set sound format", err); |
1030 | ||
dcc88121 JD |
1031 | uval = sd->sample_rate; |
1032 | err = snd_pcm_hw_params_set_rate_near (p->handle, p->hwparams, &uval, 0); | |
3fc7a865 | 1033 | if (err < 0) |
2d2643f6 | 1034 | alsa_sound_perror ("Could not set sample rate", err); |
ed1f0a45 | 1035 | |
2d2643f6 | 1036 | val = sd->channels; |
3fc7a865 JD |
1037 | err = snd_pcm_hw_params_set_channels (p->handle, p->hwparams, val); |
1038 | if (err < 0) | |
2d2643f6 JD |
1039 | alsa_sound_perror ("Could not set channel count", err); |
1040 | ||
3fc7a865 JD |
1041 | err = snd_pcm_hw_params (p->handle, p->hwparams); |
1042 | if (err < 0) | |
07a7837c JD |
1043 | alsa_sound_perror ("Could not set parameters", err); |
1044 | ||
2d2643f6 JD |
1045 | |
1046 | err = snd_pcm_hw_params_get_period_size (p->hwparams, &p->period_size, &dir); | |
1047 | if (err < 0) | |
1048 | alsa_sound_perror ("Unable to get period size for playback", err); | |
1049 | ||
1050 | err = snd_pcm_hw_params_get_buffer_size (p->hwparams, &buffer_size); | |
1051 | if (err < 0) | |
1052 | alsa_sound_perror("Unable to get buffer size for playback", err); | |
1053 | ||
2d2643f6 JD |
1054 | err = snd_pcm_sw_params_current (p->handle, p->swparams); |
1055 | if (err < 0) | |
1056 | alsa_sound_perror ("Unable to determine current swparams for playback", | |
1057 | err); | |
1058 | ||
1059 | /* Start the transfer when the buffer is almost full */ | |
1060 | err = snd_pcm_sw_params_set_start_threshold (p->handle, p->swparams, | |
1061 | (buffer_size / p->period_size) | |
1062 | * p->period_size); | |
1063 | if (err < 0) | |
1064 | alsa_sound_perror ("Unable to set start threshold mode for playback", err); | |
1065 | ||
1066 | /* Allow the transfer when at least period_size samples can be processed */ | |
1067 | err = snd_pcm_sw_params_set_avail_min (p->handle, p->swparams, p->period_size); | |
1068 | if (err < 0) | |
1069 | alsa_sound_perror ("Unable to set avail min for playback", err); | |
1070 | ||
1071 | /* Align all transfers to 1 period */ | |
1072 | err = snd_pcm_sw_params_set_xfer_align (p->handle, p->swparams, | |
1073 | p->period_size); | |
1074 | if (err < 0) | |
1075 | alsa_sound_perror ("Unable to set transfer align for playback", err); | |
1076 | ||
1077 | err = snd_pcm_sw_params (p->handle, p->swparams); | |
1078 | if (err < 0) | |
1079 | alsa_sound_perror ("Unable to set sw params for playback\n", err); | |
1080 | ||
1081 | snd_pcm_hw_params_free (p->hwparams); | |
1082 | p->hwparams = NULL; | |
1083 | snd_pcm_sw_params_free (p->swparams); | |
1084 | p->swparams = NULL; | |
ed1f0a45 | 1085 | |
3fc7a865 JD |
1086 | err = snd_pcm_prepare (p->handle); |
1087 | if (err < 0) | |
2d2643f6 | 1088 | alsa_sound_perror ("Could not prepare audio interface for use", err); |
ed1f0a45 | 1089 | |
2d2643f6 JD |
1090 | if (sd->volume > 0) |
1091 | { | |
1092 | int chn; | |
1093 | snd_mixer_t *handle; | |
1094 | snd_mixer_elem_t *e; | |
1095 | char *file = sd->file ? sd->file : DEFAULT_ALSA_SOUND_DEVICE; | |
1096 | ||
1097 | if (snd_mixer_open (&handle, 0) >= 0) | |
1098 | { | |
1099 | if (snd_mixer_attach (handle, file) >= 0 | |
1100 | && snd_mixer_load (handle) >= 0 | |
1101 | && snd_mixer_selem_register (handle, NULL, NULL) >= 0) | |
1102 | for (e = snd_mixer_first_elem (handle); | |
1103 | e; | |
1104 | e = snd_mixer_elem_next (e)) | |
1105 | { | |
1106 | if (snd_mixer_selem_has_playback_volume (e)) | |
1107 | { | |
646d0d12 | 1108 | long pmin, pmax, vol; |
2d2643f6 | 1109 | snd_mixer_selem_get_playback_volume_range (e, &pmin, &pmax); |
646d0d12 | 1110 | vol = pmin + (sd->volume * (pmax - pmin)) / 100; |
ed1f0a45 | 1111 | |
2d2643f6 JD |
1112 | for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++) |
1113 | snd_mixer_selem_set_playback_volume (e, chn, vol); | |
1114 | } | |
1115 | } | |
1116 | snd_mixer_close(handle); | |
1117 | } | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | ||
1122 | /* Close device SD if it is open. */ | |
1123 | ||
1124 | static void | |
1125 | alsa_close (sd) | |
1126 | struct sound_device *sd; | |
1127 | { | |
1128 | struct alsa_params *p = (struct alsa_params *) sd->data; | |
1129 | if (p) | |
1130 | { | |
1131 | if (p->hwparams) | |
1132 | snd_pcm_hw_params_free (p->hwparams); | |
1133 | if (p->swparams) | |
1134 | snd_pcm_sw_params_free (p->swparams); | |
1135 | if (p->handle) | |
1136 | { | |
dcc88121 | 1137 | snd_pcm_drain (p->handle); |
2d2643f6 JD |
1138 | snd_pcm_close (p->handle); |
1139 | } | |
1140 | free (p); | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | /* Choose device-dependent format for device SD from sound file S. */ | |
1145 | ||
1146 | static void | |
1147 | alsa_choose_format (sd, s) | |
1148 | struct sound_device *sd; | |
1149 | struct sound *s; | |
1150 | { | |
1151 | struct alsa_params *p = (struct alsa_params *) sd->data; | |
1152 | if (s->type == RIFF) | |
1153 | { | |
1154 | struct wav_header *h = (struct wav_header *) s->header; | |
1155 | if (h->precision == 8) | |
1156 | sd->format = SND_PCM_FORMAT_U8; | |
1157 | else if (h->precision == 16) | |
1158 | sd->format = SND_PCM_FORMAT_S16_LE; | |
1159 | else | |
1160 | error ("Unsupported WAV file format"); | |
1161 | } | |
1162 | else if (s->type == SUN_AUDIO) | |
1163 | { | |
1164 | struct au_header *header = (struct au_header *) s->header; | |
1165 | switch (header->encoding) | |
1166 | { | |
1167 | case AU_ENCODING_ULAW_8: | |
1168 | sd->format = SND_PCM_FORMAT_MU_LAW; | |
1169 | break; | |
1170 | case AU_ENCODING_ALAW_8: | |
1171 | sd->format = SND_PCM_FORMAT_A_LAW; | |
1172 | break; | |
1173 | case AU_ENCODING_IEEE32: | |
1174 | sd->format = SND_PCM_FORMAT_FLOAT_BE; | |
1175 | break; | |
1176 | case AU_ENCODING_IEEE64: | |
1177 | sd->format = SND_PCM_FORMAT_FLOAT64_BE; | |
1178 | break; | |
1179 | case AU_ENCODING_8: | |
1180 | sd->format = SND_PCM_FORMAT_S8; | |
1181 | break; | |
1182 | case AU_ENCODING_16: | |
1183 | sd->format = SND_PCM_FORMAT_S16_BE; | |
1184 | break; | |
1185 | case AU_ENCODING_24: | |
1186 | sd->format = SND_PCM_FORMAT_S24_BE; | |
1187 | break; | |
1188 | case AU_ENCODING_32: | |
1189 | sd->format = SND_PCM_FORMAT_S32_BE; | |
1190 | break; | |
1191 | ||
1192 | default: | |
1193 | error ("Unsupported AU file format"); | |
1194 | } | |
1195 | } | |
1196 | else | |
1197 | abort (); | |
1198 | } | |
1199 | ||
1200 | ||
1201 | /* Write NBYTES bytes from BUFFER to device SD. */ | |
1202 | ||
1203 | static void | |
1204 | alsa_write (sd, buffer, nbytes) | |
1205 | struct sound_device *sd; | |
1206 | const char *buffer; | |
1207 | int nbytes; | |
1208 | { | |
1209 | struct alsa_params *p = (struct alsa_params *) sd->data; | |
1210 | ||
1211 | /* The the third parameter to snd_pcm_writei is frames, not bytes. */ | |
1212 | int fact = snd_pcm_format_size (sd->format, 1) * sd->channels; | |
1213 | int nwritten = 0; | |
1214 | int err; | |
1215 | ||
1216 | while (nwritten < nbytes) | |
1217 | { | |
a28de257 JD |
1218 | snd_pcm_uframes_t frames = (nbytes - nwritten)/fact; |
1219 | if (frames == 0) break; | |
1220 | ||
1221 | err = snd_pcm_writei (p->handle, buffer + nwritten, frames); | |
3fc7a865 | 1222 | if (err < 0) |
2d2643f6 | 1223 | { |
2d2643f6 JD |
1224 | if (err == -EPIPE) |
1225 | { /* under-run */ | |
1226 | err = snd_pcm_prepare (p->handle); | |
1227 | if (err < 0) | |
1228 | alsa_sound_perror ("Can't recover from underrun, prepare failed", | |
1229 | err); | |
1230 | } | |
1231 | else if (err == -ESTRPIPE) | |
1232 | { | |
1233 | while ((err = snd_pcm_resume (p->handle)) == -EAGAIN) | |
1234 | sleep(1); /* wait until the suspend flag is released */ | |
1235 | if (err < 0) | |
1236 | { | |
1237 | err = snd_pcm_prepare (p->handle); | |
1238 | if (err < 0) | |
1239 | alsa_sound_perror ("Can't recover from suspend, " | |
1240 | "prepare failed", | |
1241 | err); | |
1242 | } | |
1243 | } | |
ed1f0a45 | 1244 | else |
2d2643f6 | 1245 | alsa_sound_perror ("Error writing to sound device", err); |
ed1f0a45 | 1246 | |
2d2643f6 JD |
1247 | } |
1248 | else | |
1249 | nwritten += err * fact; | |
1250 | } | |
1251 | } | |
1252 | ||
1253 | static void | |
1254 | snd_error_quiet (file, line, function, err, fmt) | |
1255 | const char *file; | |
1256 | int line; | |
1257 | const char *function; | |
1258 | int err; | |
1259 | const char *fmt; | |
1260 | { | |
1261 | } | |
1262 | ||
1263 | /* Initialize device SD. Set up the interface functions in the device | |
1264 | structure. */ | |
1265 | ||
1266 | static int | |
1267 | alsa_init (sd) | |
1268 | struct sound_device *sd; | |
1269 | { | |
1270 | char *file; | |
1271 | snd_pcm_t *handle; | |
1272 | int err; | |
1273 | ||
1274 | /* Open the sound device. Default is "default". */ | |
1275 | if (sd->file) | |
1276 | file = sd->file; | |
1277 | else | |
1278 | file = DEFAULT_ALSA_SOUND_DEVICE; | |
1279 | ||
1280 | snd_lib_error_set_handler ((snd_lib_error_handler_t) snd_error_quiet); | |
1281 | err = snd_pcm_open (&handle, file, SND_PCM_STREAM_PLAYBACK, 0); | |
1282 | snd_lib_error_set_handler (NULL); | |
1283 | if (err < 0) | |
dcc88121 JD |
1284 | return 0; |
1285 | snd_pcm_close (handle); | |
2d2643f6 JD |
1286 | |
1287 | sd->fd = -1; | |
1288 | sd->open = alsa_open; | |
1289 | sd->close = alsa_close; | |
1290 | sd->configure = alsa_configure; | |
1291 | sd->choose_format = alsa_choose_format; | |
1292 | sd->write = alsa_write; | |
1293 | sd->period_size = alsa_period_size; | |
1294 | ||
1295 | return 1; | |
1296 | } | |
1297 | ||
1298 | #endif /* HAVE_ALSA */ | |
1299 | ||
1300 | ||
f60ae425 BK |
1301 | /* END: Non Windows functions */ |
1302 | #else /* WINDOWSNT */ | |
1303 | ||
1304 | /* BEGIN: Windows specific functions */ | |
1305 | ||
1306 | static int | |
1307 | do_play_sound (psz_file, ui_volume) | |
06c3eeed JB |
1308 | const char *psz_file; |
1309 | unsigned long ui_volume; | |
f60ae425 | 1310 | { |
06c3eeed JB |
1311 | int i_result = 0; |
1312 | MCIERROR mci_error = 0; | |
1313 | char sz_cmd_buf[520] = {0}; | |
1314 | char sz_ret_buf[520] = {0}; | |
1315 | MMRESULT mm_result = MMSYSERR_NOERROR; | |
1316 | unsigned long ui_volume_org = 0; | |
1317 | BOOL b_reset_volume = FALSE; | |
1318 | ||
f60ae425 BK |
1319 | memset (sz_cmd_buf, 0, sizeof(sz_cmd_buf)); |
1320 | memset (sz_ret_buf, 0, sizeof(sz_ret_buf)); | |
06c3eeed JB |
1321 | sprintf (sz_cmd_buf, |
1322 | "open \"%s\" alias GNUEmacs_PlaySound_Device wait", | |
1323 | psz_file); | |
1324 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, 520, NULL); | |
f60ae425 BK |
1325 | if (mci_error != 0) |
1326 | { | |
06c3eeed JB |
1327 | sound_warning ("The open mciSendString command failed to open\n" |
1328 | "the specified sound file"); | |
1329 | i_result = (int) mci_error; | |
f60ae425 BK |
1330 | return i_result; |
1331 | } | |
1332 | if ((ui_volume > 0) && (ui_volume != UINT_MAX)) | |
1333 | { | |
06c3eeed | 1334 | mm_result = waveOutGetVolume ((HWAVEOUT) WAVE_MAPPER, &ui_volume_org); |
f60ae425 BK |
1335 | if (mm_result == MMSYSERR_NOERROR) |
1336 | { | |
06c3eeed JB |
1337 | b_reset_volume = TRUE; |
1338 | mm_result = waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume); | |
f60ae425 BK |
1339 | if ( mm_result != MMSYSERR_NOERROR) |
1340 | { | |
06c3eeed JB |
1341 | sound_warning ("waveOutSetVolume failed to set the volume level\n" |
1342 | "of the WAVE_MAPPER device.\n" | |
1343 | "As a result, the user selected volume level will\n" | |
1344 | "not be used."); | |
f60ae425 BK |
1345 | } |
1346 | } | |
1347 | else | |
1348 | { | |
06c3eeed JB |
1349 | sound_warning ("waveOutGetVolume failed to obtain the original\n" |
1350 | "volume level of the WAVE_MAPPER device.\n" | |
1351 | "As a result, the user selected volume level will\n" | |
1352 | "not be used."); | |
f60ae425 BK |
1353 | } |
1354 | } | |
1355 | memset (sz_cmd_buf, 0, sizeof(sz_cmd_buf)); | |
1356 | memset (sz_ret_buf, 0, sizeof(sz_ret_buf)); | |
1357 | strcpy (sz_cmd_buf, "play GNUEmacs_PlaySound_Device wait"); | |
06c3eeed | 1358 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, 520, NULL); |
f60ae425 BK |
1359 | if (mci_error != 0) |
1360 | { | |
06c3eeed JB |
1361 | sound_warning ("The play mciSendString command failed to play the\n" |
1362 | "opened sound file."); | |
1363 | i_result = (int) mci_error; | |
f60ae425 BK |
1364 | } |
1365 | memset (sz_cmd_buf, 0, sizeof(sz_cmd_buf)); | |
1366 | memset (sz_ret_buf, 0, sizeof(sz_ret_buf)); | |
1367 | strcpy (sz_cmd_buf, "close GNUEmacs_PlaySound_Device wait"); | |
06c3eeed | 1368 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, 520, NULL); |
f60ae425 BK |
1369 | if (b_reset_volume == TRUE) |
1370 | { | |
06c3eeed | 1371 | mm_result=waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume_org); |
f60ae425 BK |
1372 | if (mm_result != MMSYSERR_NOERROR) |
1373 | { | |
06c3eeed JB |
1374 | sound_warning ("waveOutSetVolume failed to reset the original volume\n" |
1375 | "level of the WAVE_MAPPER device."); | |
f60ae425 BK |
1376 | } |
1377 | } | |
1378 | return i_result; | |
1379 | } | |
1380 | ||
1381 | /* END: Windows specific functions */ | |
1382 | ||
1383 | #endif /* WINDOWSNT */ | |
1384 | ||
f60ae425 BK |
1385 | DEFUN ("play-sound-internal", Fplay_sound_internal, Splay_sound_internal, 1, 1, 0, |
1386 | doc: /* Play sound SOUND. | |
1387 | ||
ed1f0a45 | 1388 | Internal use only, use `play-sound' instead. */) |
f60ae425 BK |
1389 | (sound) |
1390 | Lisp_Object sound; | |
1391 | { | |
1392 | Lisp_Object attrs[SOUND_ATTR_SENTINEL]; | |
1393 | int count = SPECPDL_INDEX (); | |
1394 | ||
1395 | #ifndef WINDOWSNT | |
1396 | Lisp_Object file; | |
1397 | struct gcpro gcpro1, gcpro2; | |
f60ae425 BK |
1398 | Lisp_Object args[2]; |
1399 | #else /* WINDOWSNT */ | |
06c3eeed JB |
1400 | int len = 0; |
1401 | Lisp_Object lo_file = {0}; | |
1402 | char * psz_file = NULL; | |
1403 | unsigned long ui_volume_tmp = UINT_MAX; | |
1404 | unsigned long ui_volume = UINT_MAX; | |
1405 | int i_result = 0; | |
f60ae425 BK |
1406 | #endif /* WINDOWSNT */ |
1407 | ||
1408 | /* Parse the sound specification. Give up if it is invalid. */ | |
1409 | if (!parse_sound (sound, attrs)) | |
1410 | error ("Invalid sound specification"); | |
1411 | ||
1412 | #ifndef WINDOWSNT | |
1413 | file = Qnil; | |
1414 | GCPRO2 (sound, file); | |
8e6ec322 RS |
1415 | current_sound_device = (struct sound_device *) xmalloc (sizeof (struct sound_device)); |
1416 | bzero (current_sound_device, sizeof (struct sound_device)); | |
1417 | current_sound = (struct sound *) xmalloc (sizeof (struct sound)); | |
1418 | bzero (current_sound, sizeof (struct sound)); | |
f60ae425 | 1419 | record_unwind_protect (sound_cleanup, Qnil); |
8e6ec322 | 1420 | current_sound->header = (char *) alloca (MAX_SOUND_HEADER_BYTES); |
f60ae425 BK |
1421 | |
1422 | if (STRINGP (attrs[SOUND_FILE])) | |
1423 | { | |
1424 | /* Open the sound file. */ | |
8e6ec322 RS |
1425 | current_sound->fd = openp (Fcons (Vdata_directory, Qnil), |
1426 | attrs[SOUND_FILE], Qnil, &file, Qnil); | |
1427 | if (current_sound->fd < 0) | |
f60ae425 BK |
1428 | sound_perror ("Could not open sound file"); |
1429 | ||
1430 | /* Read the first bytes from the file. */ | |
8e6ec322 RS |
1431 | current_sound->header_size |
1432 | = emacs_read (current_sound->fd, current_sound->header, | |
1433 | MAX_SOUND_HEADER_BYTES); | |
1434 | if (current_sound->header_size < 0) | |
f60ae425 BK |
1435 | sound_perror ("Invalid sound file header"); |
1436 | } | |
1437 | else | |
1438 | { | |
8e6ec322 RS |
1439 | current_sound->data = attrs[SOUND_DATA]; |
1440 | current_sound->header_size = min (MAX_SOUND_HEADER_BYTES, SBYTES (current_sound->data)); | |
1441 | bcopy (SDATA (current_sound->data), current_sound->header, current_sound->header_size); | |
f60ae425 BK |
1442 | } |
1443 | ||
1444 | /* Find out the type of sound. Give up if we can't tell. */ | |
8e6ec322 | 1445 | find_sound_type (current_sound); |
f60ae425 BK |
1446 | |
1447 | /* Set up a device. */ | |
1448 | if (STRINGP (attrs[SOUND_DEVICE])) | |
1449 | { | |
1450 | int len = SCHARS (attrs[SOUND_DEVICE]); | |
8e6ec322 RS |
1451 | current_sound_device->file = (char *) alloca (len + 1); |
1452 | strcpy (current_sound_device->file, SDATA (attrs[SOUND_DEVICE])); | |
f60ae425 BK |
1453 | } |
1454 | ||
1455 | if (INTEGERP (attrs[SOUND_VOLUME])) | |
8e6ec322 | 1456 | current_sound_device->volume = XFASTINT (attrs[SOUND_VOLUME]); |
f60ae425 | 1457 | else if (FLOATP (attrs[SOUND_VOLUME])) |
8e6ec322 | 1458 | current_sound_device->volume = XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; |
7840ced1 | 1459 | |
f60ae425 BK |
1460 | args[0] = Qplay_sound_functions; |
1461 | args[1] = sound; | |
1462 | Frun_hook_with_args (2, args); | |
1463 | ||
2d2643f6 JD |
1464 | #ifdef HAVE_ALSA |
1465 | if (!alsa_init (current_sound_device)) | |
1466 | #endif | |
1467 | if (!vox_init (current_sound_device)) | |
1468 | error ("No usable sound device driver found"); | |
f60ae425 BK |
1469 | |
1470 | /* Open the device. */ | |
8e6ec322 | 1471 | current_sound_device->open (current_sound_device); |
f60ae425 BK |
1472 | |
1473 | /* Play the sound. */ | |
8e6ec322 | 1474 | current_sound->play (current_sound, current_sound_device); |
f60ae425 BK |
1475 | |
1476 | /* Clean up. */ | |
f60ae425 | 1477 | UNGCPRO; |
06c3eeed | 1478 | |
f60ae425 | 1479 | #else /* WINDOWSNT */ |
06c3eeed JB |
1480 | |
1481 | lo_file = Fexpand_file_name (attrs[SOUND_FILE], Qnil); | |
1482 | len = XSTRING (lo_file)->size; | |
1483 | psz_file = (char *) alloca (len + 1); | |
f60ae425 BK |
1484 | strcpy (psz_file, XSTRING (lo_file)->data); |
1485 | if (INTEGERP (attrs[SOUND_VOLUME])) | |
1486 | { | |
06c3eeed | 1487 | ui_volume_tmp = XFASTINT (attrs[SOUND_VOLUME]); |
f60ae425 BK |
1488 | } |
1489 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
1490 | { | |
06c3eeed | 1491 | ui_volume_tmp = (unsigned long) XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; |
f60ae425 BK |
1492 | } |
1493 | /* | |
1494 | Based on some experiments I have conducted, a value of 100 or less | |
1495 | for the sound volume is much too low. You cannot even hear it. | |
1496 | A value of UINT_MAX indicates that you wish for the sound to played | |
1497 | at the maximum possible volume. A value of UINT_MAX/2 plays the | |
1498 | sound at 50% maximum volume. Therefore the value passed to do_play_sound | |
06c3eeed | 1499 | (and thus to waveOutSetVolume) must be some fraction of UINT_MAX. |
f60ae425 | 1500 | The following code adjusts the user specified volume level appropriately. |
06c3eeed | 1501 | */ |
f60ae425 BK |
1502 | if ((ui_volume_tmp > 0) && (ui_volume_tmp <= 100)) |
1503 | { | |
06c3eeed | 1504 | ui_volume = ui_volume_tmp * (UINT_MAX / 100); |
f60ae425 | 1505 | } |
06c3eeed JB |
1506 | i_result = do_play_sound (psz_file, ui_volume); |
1507 | ||
f60ae425 | 1508 | #endif /* WINDOWSNT */ |
06c3eeed | 1509 | |
f60ae425 BK |
1510 | unbind_to (count, Qnil); |
1511 | return Qnil; | |
1512 | } | |
7840ced1 GM |
1513 | \f |
1514 | /*********************************************************************** | |
1515 | Initialization | |
1516 | ***********************************************************************/ | |
1517 | ||
1518 | void | |
1519 | syms_of_sound () | |
1520 | { | |
1521 | QCdevice = intern (":device"); | |
1522 | staticpro (&QCdevice); | |
1523 | QCvolume = intern (":volume"); | |
1524 | staticpro (&QCvolume); | |
1525 | Qsound = intern ("sound"); | |
1526 | staticpro (&Qsound); | |
2a53558d GM |
1527 | Qplay_sound_functions = intern ("play-sound-functions"); |
1528 | staticpro (&Qplay_sound_functions); | |
7840ced1 | 1529 | |
14e415e7 | 1530 | defsubr (&Splay_sound_internal); |
7840ced1 GM |
1531 | } |
1532 | ||
1533 | ||
1534 | void | |
1535 | init_sound () | |
1536 | { | |
1537 | } | |
1538 | ||
1539 | #endif /* HAVE_SOUND */ | |
ab5796a9 MB |
1540 | |
1541 | /* arch-tag: dd850ad8-0433-4e2c-9cba-b7aeeccc0dbd | |
1542 | (do not change this comment) */ |