Commit | Line | Data |
---|---|---|
7840ced1 | 1 | /* sound.c -- sound support. |
0b5538bd | 2 | Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004, |
49f70d46 | 3 | 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. |
7840ced1 GM |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
7840ced1 | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
7840ced1 GM |
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 | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7840ced1 GM |
19 | |
20 | /* Written by Gerd Moellmann <gerd@gnu.org>. Tested with Luigi's | |
21 | driver on FreeBSD 2.2.7 with a SoundBlaster 16. */ | |
22 | ||
f60ae425 BK |
23 | /* |
24 | Modified by Ben Key <Bkey1@tampabay.rr.com> to add a partial | |
25 | implementation of the play-sound specification for Windows. | |
26 | ||
27 | Notes: | |
28 | In the Windows implementation of play-sound-internal only the | |
29 | :file and :volume keywords are supported. The :device keyword, | |
30 | if present, is ignored. The :data keyword, if present, will | |
31 | cause an error to be generated. | |
32 | ||
33 | The Windows implementation of play-sound is implemented via the | |
34 | Win32 API functions mciSendString, waveOutGetVolume, and | |
06c3eeed | 35 | waveOutSetVolume which are exported by Winmm.dll. |
f60ae425 BK |
36 | */ |
37 | ||
7840ced1 GM |
38 | #include <config.h> |
39 | ||
40 | #if defined HAVE_SOUND | |
41 | ||
f60ae425 | 42 | /* BEGIN: Common Includes */ |
7840ced1 GM |
43 | #include <fcntl.h> |
44 | #include <unistd.h> | |
45 | #include <sys/types.h> | |
7840ced1 | 46 | #include <errno.h> |
d7306fe6 | 47 | #include <setjmp.h> |
53fab6e2 GM |
48 | #include "lisp.h" |
49 | #include "dispextern.h" | |
50 | #include "atimer.h" | |
bb6e8cee GM |
51 | #include <signal.h> |
52 | #include "syssignal.h" | |
f60ae425 BK |
53 | /* END: Common Includes */ |
54 | ||
55 | ||
56 | /* BEGIN: Non Windows Includes */ | |
57 | #ifndef WINDOWSNT | |
7840ced1 | 58 | |
502150e5 PJ |
59 | #ifndef MSDOS |
60 | #include <sys/ioctl.h> | |
61 | #endif | |
62 | ||
7840ced1 GM |
63 | /* FreeBSD has machine/soundcard.h. Voxware sound driver docs mention |
64 | sys/soundcard.h. So, let's try whatever's there. */ | |
65 | ||
66 | #ifdef HAVE_MACHINE_SOUNDCARD_H | |
67 | #include <machine/soundcard.h> | |
68 | #endif | |
69 | #ifdef HAVE_SYS_SOUNDCARD_H | |
70 | #include <sys/soundcard.h> | |
71 | #endif | |
80fcd514 | 72 | #ifdef HAVE_SOUNDCARD_H |
80fcd514 KR |
73 | #include <soundcard.h> |
74 | #endif | |
2d2643f6 | 75 | #ifdef HAVE_ALSA |
1d30a597 JD |
76 | #ifdef ALSA_SUBDIR_INCLUDE |
77 | #include <alsa/asoundlib.h> | |
78 | #else | |
2d2643f6 | 79 | #include <asoundlib.h> |
1d30a597 JD |
80 | #endif /* ALSA_SUBDIR_INCLUDE */ |
81 | #endif /* HAVE_ALSA */ | |
2d2643f6 | 82 | |
f60ae425 BK |
83 | /* END: Non Windows Includes */ |
84 | ||
85 | #else /* WINDOWSNT */ | |
86 | ||
87 | /* BEGIN: Windows Specific Includes */ | |
88 | #include <stdio.h> | |
89 | #include <stdlib.h> | |
90 | #include <string.h> | |
91 | #include <limits.h> | |
92 | #include <windows.h> | |
93 | #include <mmsystem.h> | |
94 | /* END: Windows Specific Includes */ | |
95 | ||
96 | #endif /* WINDOWSNT */ | |
97 | ||
98 | /* BEGIN: Common Definitions */ | |
f60ae425 BK |
99 | |
100 | /* Symbols. */ | |
101 | ||
102 | extern Lisp_Object QCfile, QCdata; | |
103 | Lisp_Object QCvolume, QCdevice; | |
104 | Lisp_Object Qsound; | |
105 | Lisp_Object Qplay_sound_functions; | |
106 | ||
107 | /* Indices of attributes in a sound attributes vector. */ | |
108 | ||
109 | enum sound_attr | |
110 | { | |
111 | SOUND_FILE, | |
112 | SOUND_DATA, | |
113 | SOUND_DEVICE, | |
114 | SOUND_VOLUME, | |
115 | SOUND_ATTR_SENTINEL | |
116 | }; | |
117 | ||
01d09305 DN |
118 | static void alsa_sound_perror P_ ((char *, int)) NO_RETURN; |
119 | static void sound_perror P_ ((char *)) NO_RETURN; | |
f60ae425 BK |
120 | static void sound_warning P_ ((char *)); |
121 | static int parse_sound P_ ((Lisp_Object, Lisp_Object *)); | |
122 | ||
123 | /* END: Common Definitions */ | |
124 | ||
125 | /* BEGIN: Non Windows Definitions */ | |
126 | #ifndef WINDOWSNT | |
80fcd514 KR |
127 | |
128 | #ifndef DEFAULT_SOUND_DEVICE | |
129 | #define DEFAULT_SOUND_DEVICE "/dev/dsp" | |
130 | #endif | |
2d2643f6 JD |
131 | #ifndef DEFAULT_ALSA_SOUND_DEVICE |
132 | #define DEFAULT_ALSA_SOUND_DEVICE "default" | |
133 | #endif | |
7840ced1 | 134 | |
7840ced1 GM |
135 | |
136 | /* Structure forward declarations. */ | |
137 | ||
d1299cde | 138 | struct sound; |
7840ced1 GM |
139 | struct sound_device; |
140 | ||
141 | /* The file header of RIFF-WAVE files (*.wav). Files are always in | |
142 | little-endian byte-order. */ | |
143 | ||
144 | struct wav_header | |
145 | { | |
146 | u_int32_t magic; | |
147 | u_int32_t length; | |
148 | u_int32_t chunk_type; | |
149 | u_int32_t chunk_format; | |
150 | u_int32_t chunk_length; | |
151 | u_int16_t format; | |
152 | u_int16_t channels; | |
153 | u_int32_t sample_rate; | |
154 | u_int32_t bytes_per_second; | |
155 | u_int16_t sample_size; | |
156 | u_int16_t precision; | |
157 | u_int32_t chunk_data; | |
158 | u_int32_t data_length; | |
159 | }; | |
160 | ||
161 | /* The file header of Sun adio files (*.au). Files are always in | |
162 | big-endian byte-order. */ | |
163 | ||
164 | struct au_header | |
165 | { | |
166 | /* ASCII ".snd" */ | |
167 | u_int32_t magic_number; | |
a4ff5d67 | 168 | |
7840ced1 GM |
169 | /* Offset of data part from start of file. Minimum value is 24. */ |
170 | u_int32_t data_offset; | |
a4ff5d67 | 171 | |
7840ced1 GM |
172 | /* Size of data part, 0xffffffff if unknown. */ |
173 | u_int32_t data_size; | |
174 | ||
175 | /* Data encoding format. | |
176 | 1 8-bit ISDN u-law | |
177 | 2 8-bit linear PCM (REF-PCM) | |
178 | 3 16-bit linear PCM | |
179 | 4 24-bit linear PCM | |
180 | 5 32-bit linear PCM | |
181 | 6 32-bit IEEE floating-point | |
182 | 7 64-bit IEEE floating-point | |
183 | 23 8-bit u-law compressed using CCITT 0.721 ADPCM voice data | |
184 | encoding scheme. */ | |
185 | u_int32_t encoding; | |
186 | ||
187 | /* Number of samples per second. */ | |
188 | u_int32_t sample_rate; | |
189 | ||
190 | /* Number of interleaved channels. */ | |
191 | u_int32_t channels; | |
192 | }; | |
193 | ||
194 | /* Maximum of all sound file headers sizes. */ | |
195 | ||
196 | #define MAX_SOUND_HEADER_BYTES \ | |
197 | max (sizeof (struct wav_header), sizeof (struct au_header)) | |
198 | ||
199 | /* Interface structure for sound devices. */ | |
200 | ||
201 | struct sound_device | |
202 | { | |
203 | /* The name of the device or null meaning use a default device name. */ | |
204 | char *file; | |
205 | ||
206 | /* File descriptor of the device. */ | |
207 | int fd; | |
208 | ||
209 | /* Device-dependent format. */ | |
210 | int format; | |
211 | ||
212 | /* Volume (0..100). Zero means unspecified. */ | |
213 | int volume; | |
214 | ||
215 | /* Sample size. */ | |
216 | int sample_size; | |
217 | ||
218 | /* Sample rate. */ | |
219 | int sample_rate; | |
220 | ||
221 | /* Bytes per second. */ | |
222 | int bps; | |
223 | ||
224 | /* 1 = mono, 2 = stereo, 0 = don't set. */ | |
225 | int channels; | |
a4ff5d67 | 226 | |
7840ced1 GM |
227 | /* Open device SD. */ |
228 | void (* open) P_ ((struct sound_device *sd)); | |
229 | ||
230 | /* Close device SD. */ | |
231 | void (* close) P_ ((struct sound_device *sd)); | |
232 | ||
233 | /* Configure SD accoring to device-dependent parameters. */ | |
234 | void (* configure) P_ ((struct sound_device *device)); | |
a4ff5d67 | 235 | |
d1299cde | 236 | /* Choose a device-dependent format for outputting sound S. */ |
7840ced1 | 237 | void (* choose_format) P_ ((struct sound_device *sd, |
d1299cde | 238 | struct sound *s)); |
7840ced1 | 239 | |
2d2643f6 JD |
240 | /* Return a preferred data size in bytes to be sent to write (below) |
241 | each time. 2048 is used if this is NULL. */ | |
242 | int (* period_size) P_ ((struct sound_device *sd)); | |
243 | ||
7840ced1 | 244 | /* Write NYBTES bytes from BUFFER to device SD. */ |
dca0fc1c KR |
245 | void (* write) P_ ((struct sound_device *sd, const char *buffer, |
246 | int nbytes)); | |
7840ced1 GM |
247 | |
248 | /* A place for devices to store additional data. */ | |
249 | void *data; | |
250 | }; | |
251 | ||
252 | /* An enumerator for each supported sound file type. */ | |
253 | ||
254 | enum sound_type | |
255 | { | |
256 | RIFF, | |
257 | SUN_AUDIO | |
258 | }; | |
259 | ||
260 | /* Interface structure for sound files. */ | |
261 | ||
d1299cde | 262 | struct sound |
7840ced1 GM |
263 | { |
264 | /* The type of the file. */ | |
265 | enum sound_type type; | |
266 | ||
d1299cde | 267 | /* File descriptor of a sound file. */ |
7840ced1 GM |
268 | int fd; |
269 | ||
d1299cde GM |
270 | /* Pointer to sound file header. This contains header_size bytes |
271 | read from the start of a sound file. */ | |
7840ced1 GM |
272 | char *header; |
273 | ||
d1299cde GM |
274 | /* Number of bytes raed from sound file. This is always <= |
275 | MAX_SOUND_HEADER_BYTES. */ | |
276 | int header_size; | |
277 | ||
278 | /* Sound data, if a string. */ | |
279 | Lisp_Object data; | |
280 | ||
281 | /* Play sound file S on device SD. */ | |
a4ff5d67 | 282 | void (* play) P_ ((struct sound *s, struct sound_device *sd)); |
7840ced1 GM |
283 | }; |
284 | ||
14e415e7 | 285 | /* These are set during `play-sound-internal' so that sound_cleanup has |
7840ced1 GM |
286 | access to them. */ |
287 | ||
d1299cde GM |
288 | struct sound_device *current_sound_device; |
289 | struct sound *current_sound; | |
7840ced1 GM |
290 | |
291 | /* Function prototypes. */ | |
292 | ||
293 | static void vox_open P_ ((struct sound_device *)); | |
294 | static void vox_configure P_ ((struct sound_device *)); | |
295 | static void vox_close P_ ((struct sound_device *sd)); | |
d1299cde | 296 | static void vox_choose_format P_ ((struct sound_device *, struct sound *)); |
2d2643f6 | 297 | static int vox_init P_ ((struct sound_device *)); |
dca0fc1c | 298 | static void vox_write P_ ((struct sound_device *, const char *, int)); |
d1299cde | 299 | static void find_sound_type P_ ((struct sound *)); |
7840ced1 GM |
300 | static u_int32_t le2hl P_ ((u_int32_t)); |
301 | static u_int16_t le2hs P_ ((u_int16_t)); | |
302 | static u_int32_t be2hl P_ ((u_int32_t)); | |
d1299cde GM |
303 | static int wav_init P_ ((struct sound *)); |
304 | static void wav_play P_ ((struct sound *, struct sound_device *)); | |
305 | static int au_init P_ ((struct sound *)); | |
306 | static void au_play P_ ((struct sound *, struct sound_device *)); | |
7840ced1 | 307 | |
9680b9d0 GM |
308 | #if 0 /* Currently not used. */ |
309 | static u_int16_t be2hs P_ ((u_int16_t)); | |
310 | #endif | |
311 | ||
f60ae425 BK |
312 | /* END: Non Windows Definitions */ |
313 | #else /* WINDOWSNT */ | |
314 | ||
315 | /* BEGIN: Windows Specific Definitions */ | |
316 | static int do_play_sound P_ ((const char *, unsigned long)); | |
317 | /* | |
318 | END: Windows Specific Definitions */ | |
319 | #endif /* WINDOWSNT */ | |
7840ced1 GM |
320 | |
321 | \f | |
322 | /*********************************************************************** | |
323 | General | |
324 | ***********************************************************************/ | |
325 | ||
f60ae425 BK |
326 | /* BEGIN: Common functions */ |
327 | ||
7840ced1 GM |
328 | /* Like perror, but signals an error. */ |
329 | ||
330 | static void | |
331 | sound_perror (msg) | |
332 | char *msg; | |
333 | { | |
3297e2a1 AS |
334 | int saved_errno = errno; |
335 | ||
62725a92 GM |
336 | turn_on_atimers (1); |
337 | #ifdef SIGIO | |
338 | sigunblock (sigmask (SIGIO)); | |
339 | #endif | |
3297e2a1 AS |
340 | if (saved_errno != 0) |
341 | error ("%s: %s", msg, strerror (saved_errno)); | |
62725a92 GM |
342 | else |
343 | error ("%s", msg); | |
344 | } | |
345 | ||
346 | ||
347 | /* Display a warning message. */ | |
348 | ||
349 | static void | |
350 | sound_warning (msg) | |
351 | char *msg; | |
352 | { | |
353 | message (msg); | |
7840ced1 GM |
354 | } |
355 | ||
356 | ||
357 | /* Parse sound specification SOUND, and fill ATTRS with what is | |
358 | found. Value is non-zero if SOUND Is a valid sound specification. | |
359 | A valid sound specification is a list starting with the symbol | |
360 | `sound'. The rest of the list is a property list which may | |
361 | contain the following key/value pairs: | |
362 | ||
363 | - `:file FILE' | |
364 | ||
365 | FILE is the sound file to play. If it isn't an absolute name, | |
366 | it's searched under `data-directory'. | |
367 | ||
d1299cde GM |
368 | - `:data DATA' |
369 | ||
370 | DATA is a string containing sound data. Either :file or :data | |
371 | may be present, but not both. | |
372 | ||
7840ced1 GM |
373 | - `:device DEVICE' |
374 | ||
375 | DEVICE is the name of the device to play on, e.g. "/dev/dsp2". | |
376 | If not specified, a default device is used. | |
377 | ||
378 | - `:volume VOL' | |
379 | ||
2a53558d GM |
380 | VOL must be an integer in the range [0, 100], or a float in the |
381 | range [0, 1]. */ | |
7840ced1 GM |
382 | |
383 | static int | |
384 | parse_sound (sound, attrs) | |
385 | Lisp_Object sound; | |
386 | Lisp_Object *attrs; | |
387 | { | |
388 | /* SOUND must be a list starting with the symbol `sound'. */ | |
389 | if (!CONSP (sound) || !EQ (XCAR (sound), Qsound)) | |
390 | return 0; | |
391 | ||
392 | sound = XCDR (sound); | |
393 | attrs[SOUND_FILE] = Fplist_get (sound, QCfile); | |
d1299cde | 394 | attrs[SOUND_DATA] = Fplist_get (sound, QCdata); |
7840ced1 GM |
395 | attrs[SOUND_DEVICE] = Fplist_get (sound, QCdevice); |
396 | attrs[SOUND_VOLUME] = Fplist_get (sound, QCvolume); | |
397 | ||
f60ae425 | 398 | #ifndef WINDOWSNT |
d1299cde GM |
399 | /* File name or data must be specified. */ |
400 | if (!STRINGP (attrs[SOUND_FILE]) | |
401 | && !STRINGP (attrs[SOUND_DATA])) | |
7840ced1 | 402 | return 0; |
f60ae425 BK |
403 | #else /* WINDOWSNT */ |
404 | /* | |
405 | Data is not supported in Windows. Therefore a | |
406 | File name MUST be supplied. | |
407 | */ | |
408 | if (!STRINGP (attrs[SOUND_FILE])) | |
409 | { | |
410 | return 0; | |
411 | } | |
412 | #endif /* WINDOWSNT */ | |
7840ced1 GM |
413 | |
414 | /* Volume must be in the range 0..100 or unspecified. */ | |
415 | if (!NILP (attrs[SOUND_VOLUME])) | |
416 | { | |
2a53558d GM |
417 | if (INTEGERP (attrs[SOUND_VOLUME])) |
418 | { | |
419 | if (XINT (attrs[SOUND_VOLUME]) < 0 | |
420 | || XINT (attrs[SOUND_VOLUME]) > 100) | |
421 | return 0; | |
422 | } | |
423 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
424 | { | |
425 | if (XFLOAT_DATA (attrs[SOUND_VOLUME]) < 0 | |
426 | || XFLOAT_DATA (attrs[SOUND_VOLUME]) > 1) | |
427 | return 0; | |
428 | } | |
429 | else | |
7840ced1 GM |
430 | return 0; |
431 | } | |
432 | ||
f60ae425 | 433 | #ifndef WINDOWSNT |
7840ced1 GM |
434 | /* Device must be a string or unspecified. */ |
435 | if (!NILP (attrs[SOUND_DEVICE]) | |
436 | && !STRINGP (attrs[SOUND_DEVICE])) | |
437 | return 0; | |
f60ae425 BK |
438 | #endif /* WINDOWSNT */ |
439 | /* | |
440 | Since device is ignored in Windows, it does not matter | |
441 | what it is. | |
442 | */ | |
7840ced1 GM |
443 | return 1; |
444 | } | |
445 | ||
f60ae425 BK |
446 | /* END: Common functions */ |
447 | ||
448 | /* BEGIN: Non Windows functions */ | |
449 | #ifndef WINDOWSNT | |
7840ced1 GM |
450 | |
451 | /* Find out the type of the sound file whose file descriptor is FD. | |
d1299cde | 452 | S is the sound file structure to fill in. */ |
7840ced1 GM |
453 | |
454 | static void | |
d1299cde GM |
455 | find_sound_type (s) |
456 | struct sound *s; | |
7840ced1 | 457 | { |
d1299cde GM |
458 | if (!wav_init (s) && !au_init (s)) |
459 | error ("Unknown sound format"); | |
7840ced1 GM |
460 | } |
461 | ||
462 | ||
14e415e7 | 463 | /* Function installed by play-sound-internal with record_unwind_protect. */ |
7840ced1 GM |
464 | |
465 | static Lisp_Object | |
466 | sound_cleanup (arg) | |
467 | Lisp_Object arg; | |
468 | { | |
8e6ec322 RS |
469 | if (current_sound_device->close) |
470 | current_sound_device->close (current_sound_device); | |
471 | if (current_sound->fd > 0) | |
472 | emacs_close (current_sound->fd); | |
473 | free (current_sound_device); | |
474 | free (current_sound); | |
3887b449 GM |
475 | |
476 | return Qnil; | |
7840ced1 GM |
477 | } |
478 | ||
7840ced1 GM |
479 | /*********************************************************************** |
480 | Byte-order Conversion | |
481 | ***********************************************************************/ | |
482 | ||
483 | /* Convert 32-bit value VALUE which is in little-endian byte-order | |
484 | to host byte-order. */ | |
485 | ||
486 | static u_int32_t | |
487 | le2hl (value) | |
488 | u_int32_t value; | |
489 | { | |
490 | #ifdef WORDS_BIG_ENDIAN | |
491 | unsigned char *p = (unsigned char *) &value; | |
492 | value = p[0] + (p[1] << 8) + (p[2] << 16) + (p[3] << 24); | |
493 | #endif | |
494 | return value; | |
495 | } | |
496 | ||
497 | ||
498 | /* Convert 16-bit value VALUE which is in little-endian byte-order | |
499 | to host byte-order. */ | |
500 | ||
501 | static u_int16_t | |
502 | le2hs (value) | |
503 | u_int16_t value; | |
504 | { | |
505 | #ifdef WORDS_BIG_ENDIAN | |
506 | unsigned char *p = (unsigned char *) &value; | |
507 | value = p[0] + (p[1] << 8); | |
508 | #endif | |
509 | return value; | |
510 | } | |
511 | ||
512 | ||
513 | /* Convert 32-bit value VALUE which is in big-endian byte-order | |
514 | to host byte-order. */ | |
515 | ||
516 | static u_int32_t | |
517 | be2hl (value) | |
518 | u_int32_t value; | |
519 | { | |
520 | #ifndef WORDS_BIG_ENDIAN | |
521 | unsigned char *p = (unsigned char *) &value; | |
522 | value = p[3] + (p[2] << 8) + (p[1] << 16) + (p[0] << 24); | |
523 | #endif | |
524 | return value; | |
525 | } | |
526 | ||
527 | ||
9680b9d0 GM |
528 | #if 0 /* Currently not used. */ |
529 | ||
7840ced1 GM |
530 | /* Convert 16-bit value VALUE which is in big-endian byte-order |
531 | to host byte-order. */ | |
532 | ||
533 | static u_int16_t | |
534 | be2hs (value) | |
535 | u_int16_t value; | |
536 | { | |
537 | #ifndef WORDS_BIG_ENDIAN | |
538 | unsigned char *p = (unsigned char *) &value; | |
539 | value = p[1] + (p[0] << 8); | |
540 | #endif | |
541 | return value; | |
542 | } | |
543 | ||
9680b9d0 | 544 | #endif /* 0 */ |
7840ced1 | 545 | |
7840ced1 GM |
546 | /*********************************************************************** |
547 | RIFF-WAVE (*.wav) | |
548 | ***********************************************************************/ | |
549 | ||
d1299cde | 550 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
551 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
552 | sound file. If the file is a WAV-format file, set up interface | |
d1299cde | 553 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
554 | Value is non-zero if the file is a WAV file. */ |
555 | ||
556 | static int | |
d1299cde GM |
557 | wav_init (s) |
558 | struct sound *s; | |
7840ced1 | 559 | { |
d1299cde GM |
560 | struct wav_header *header = (struct wav_header *) s->header; |
561 | ||
562 | if (s->header_size < sizeof *header | |
563 | || bcmp (s->header, "RIFF", 4) != 0) | |
7840ced1 GM |
564 | return 0; |
565 | ||
566 | /* WAV files are in little-endian order. Convert the header | |
567 | if on a big-endian machine. */ | |
568 | header->magic = le2hl (header->magic); | |
569 | header->length = le2hl (header->length); | |
570 | header->chunk_type = le2hl (header->chunk_type); | |
571 | header->chunk_format = le2hl (header->chunk_format); | |
572 | header->chunk_length = le2hl (header->chunk_length); | |
573 | header->format = le2hs (header->format); | |
574 | header->channels = le2hs (header->channels); | |
575 | header->sample_rate = le2hl (header->sample_rate); | |
576 | header->bytes_per_second = le2hl (header->bytes_per_second); | |
577 | header->sample_size = le2hs (header->sample_size); | |
578 | header->precision = le2hs (header->precision); | |
579 | header->chunk_data = le2hl (header->chunk_data); | |
580 | header->data_length = le2hl (header->data_length); | |
581 | ||
582 | /* Set up the interface functions for WAV. */ | |
d1299cde GM |
583 | s->type = RIFF; |
584 | s->play = wav_play; | |
7840ced1 GM |
585 | |
586 | return 1; | |
a4ff5d67 | 587 | } |
7840ced1 GM |
588 | |
589 | ||
d1299cde | 590 | /* Play RIFF-WAVE audio file S on sound device SD. */ |
7840ced1 GM |
591 | |
592 | static void | |
d1299cde GM |
593 | wav_play (s, sd) |
594 | struct sound *s; | |
7840ced1 GM |
595 | struct sound_device *sd; |
596 | { | |
d1299cde | 597 | struct wav_header *header = (struct wav_header *) s->header; |
7840ced1 GM |
598 | |
599 | /* Let the device choose a suitable device-dependent format | |
600 | for the file. */ | |
d1299cde | 601 | sd->choose_format (sd, s); |
a4ff5d67 | 602 | |
7840ced1 GM |
603 | /* Configure the device. */ |
604 | sd->sample_size = header->sample_size; | |
605 | sd->sample_rate = header->sample_rate; | |
606 | sd->bps = header->bytes_per_second; | |
607 | sd->channels = header->channels; | |
608 | sd->configure (sd); | |
609 | ||
610 | /* Copy sound data to the device. The WAV file specification is | |
611 | actually more complex. This simple scheme worked with all WAV | |
612 | files I found so far. If someone feels inclined to implement the | |
613 | whole RIFF-WAVE spec, please do. */ | |
d1299cde | 614 | if (STRINGP (s->data)) |
d5db4077 KR |
615 | sd->write (sd, SDATA (s->data) + sizeof *header, |
616 | SBYTES (s->data) - sizeof *header); | |
d1299cde GM |
617 | else |
618 | { | |
619 | char *buffer; | |
620 | int nbytes; | |
2d2643f6 | 621 | int blksize = sd->period_size ? sd->period_size (sd) : 2048; |
a28de257 | 622 | int data_left = header->data_length; |
a4ff5d67 | 623 | |
d1299cde GM |
624 | buffer = (char *) alloca (blksize); |
625 | lseek (s->fd, sizeof *header, SEEK_SET); | |
a28de257 JD |
626 | while (data_left > 0 |
627 | && (nbytes = emacs_read (s->fd, buffer, blksize)) > 0) | |
628 | { | |
629 | /* Don't play possible garbage at the end of file */ | |
630 | if (data_left < nbytes) nbytes = data_left; | |
631 | data_left -= nbytes; | |
632 | sd->write (sd, buffer, nbytes); | |
633 | } | |
7840ced1 | 634 | |
d1299cde | 635 | if (nbytes < 0) |
62725a92 | 636 | sound_perror ("Error reading sound file"); |
d1299cde | 637 | } |
7840ced1 GM |
638 | } |
639 | ||
640 | ||
7840ced1 GM |
641 | /*********************************************************************** |
642 | Sun Audio (*.au) | |
643 | ***********************************************************************/ | |
644 | ||
a4ff5d67 | 645 | /* Sun audio file encodings. */ |
7840ced1 GM |
646 | |
647 | enum au_encoding | |
648 | { | |
649 | AU_ENCODING_ULAW_8 = 1, | |
650 | AU_ENCODING_8, | |
651 | AU_ENCODING_16, | |
652 | AU_ENCODING_24, | |
653 | AU_ENCODING_32, | |
654 | AU_ENCODING_IEEE32, | |
655 | AU_ENCODING_IEEE64, | |
2d2643f6 JD |
656 | AU_COMPRESSED = 23, |
657 | AU_ENCODING_ALAW_8 = 27 | |
7840ced1 GM |
658 | }; |
659 | ||
660 | ||
d1299cde | 661 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
662 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
663 | sound file. If the file is a AU-format file, set up interface | |
d1299cde | 664 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
665 | Value is non-zero if the file is an AU file. */ |
666 | ||
667 | static int | |
d1299cde GM |
668 | au_init (s) |
669 | struct sound *s; | |
7840ced1 | 670 | { |
d1299cde | 671 | struct au_header *header = (struct au_header *) s->header; |
a4ff5d67 | 672 | |
d1299cde GM |
673 | if (s->header_size < sizeof *header |
674 | || bcmp (s->header, ".snd", 4) != 0) | |
7840ced1 | 675 | return 0; |
a4ff5d67 | 676 | |
7840ced1 GM |
677 | header->magic_number = be2hl (header->magic_number); |
678 | header->data_offset = be2hl (header->data_offset); | |
679 | header->data_size = be2hl (header->data_size); | |
680 | header->encoding = be2hl (header->encoding); | |
681 | header->sample_rate = be2hl (header->sample_rate); | |
682 | header->channels = be2hl (header->channels); | |
a4ff5d67 | 683 | |
7840ced1 | 684 | /* Set up the interface functions for AU. */ |
d1299cde GM |
685 | s->type = SUN_AUDIO; |
686 | s->play = au_play; | |
7840ced1 GM |
687 | |
688 | return 1; | |
689 | } | |
690 | ||
691 | ||
d1299cde | 692 | /* Play Sun audio file S on sound device SD. */ |
7840ced1 GM |
693 | |
694 | static void | |
d1299cde GM |
695 | au_play (s, sd) |
696 | struct sound *s; | |
7840ced1 GM |
697 | struct sound_device *sd; |
698 | { | |
d1299cde | 699 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
700 | |
701 | sd->sample_size = 0; | |
702 | sd->sample_rate = header->sample_rate; | |
703 | sd->bps = 0; | |
704 | sd->channels = header->channels; | |
d1299cde | 705 | sd->choose_format (sd, s); |
7840ced1 | 706 | sd->configure (sd); |
d1299cde GM |
707 | |
708 | if (STRINGP (s->data)) | |
d5db4077 KR |
709 | sd->write (sd, SDATA (s->data) + header->data_offset, |
710 | SBYTES (s->data) - header->data_offset); | |
d1299cde GM |
711 | else |
712 | { | |
2d2643f6 | 713 | int blksize = sd->period_size ? sd->period_size (sd) : 2048; |
d1299cde GM |
714 | char *buffer; |
715 | int nbytes; | |
a4ff5d67 | 716 | |
d1299cde GM |
717 | /* Seek */ |
718 | lseek (s->fd, header->data_offset, SEEK_SET); | |
a4ff5d67 | 719 | |
d1299cde GM |
720 | /* Copy sound data to the device. */ |
721 | buffer = (char *) alloca (blksize); | |
722 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) | |
723 | sd->write (sd, buffer, nbytes); | |
a4ff5d67 | 724 | |
d1299cde | 725 | if (nbytes < 0) |
62725a92 | 726 | sound_perror ("Error reading sound file"); |
d1299cde | 727 | } |
7840ced1 GM |
728 | } |
729 | ||
730 | ||
7840ced1 GM |
731 | /*********************************************************************** |
732 | Voxware Driver Interface | |
733 | ***********************************************************************/ | |
734 | ||
735 | /* This driver is available on GNU/Linux, and the free BSDs. FreeBSD | |
736 | has a compatible own driver aka Luigi's driver. */ | |
737 | ||
738 | ||
739 | /* Open device SD. If SD->file is non-null, open that device, | |
740 | otherwise use a default device name. */ | |
741 | ||
742 | static void | |
743 | vox_open (sd) | |
744 | struct sound_device *sd; | |
745 | { | |
746 | char *file; | |
a4ff5d67 | 747 | |
7840ced1 GM |
748 | /* Open the sound device. Default is /dev/dsp. */ |
749 | if (sd->file) | |
750 | file = sd->file; | |
751 | else | |
80fcd514 | 752 | file = DEFAULT_SOUND_DEVICE; |
a4ff5d67 | 753 | |
68c45bf0 | 754 | sd->fd = emacs_open (file, O_WRONLY, 0); |
7840ced1 GM |
755 | if (sd->fd < 0) |
756 | sound_perror (file); | |
757 | } | |
758 | ||
759 | ||
760 | /* Configure device SD from parameters in it. */ | |
761 | ||
762 | static void | |
763 | vox_configure (sd) | |
764 | struct sound_device *sd; | |
765 | { | |
28fcb7dc | 766 | int val; |
a4ff5d67 | 767 | |
7840ced1 GM |
768 | xassert (sd->fd >= 0); |
769 | ||
bb6e8cee GM |
770 | /* On GNU/Linux, it seems that the device driver doesn't like to be |
771 | interrupted by a signal. Block the ones we know to cause | |
772 | troubles. */ | |
b5cb1ada | 773 | turn_on_atimers (0); |
bb6e8cee GM |
774 | #ifdef SIGIO |
775 | sigblock (sigmask (SIGIO)); | |
776 | #endif | |
b5cb1ada | 777 | |
28fcb7dc GM |
778 | val = sd->format; |
779 | if (ioctl (sd->fd, SNDCTL_DSP_SETFMT, &sd->format) < 0 | |
780 | || val != sd->format) | |
62725a92 | 781 | sound_perror ("Could not set sound format"); |
7840ced1 | 782 | |
28fcb7dc GM |
783 | val = sd->channels != 1; |
784 | if (ioctl (sd->fd, SNDCTL_DSP_STEREO, &val) < 0 | |
785 | || val != (sd->channels != 1)) | |
62725a92 | 786 | sound_perror ("Could not set stereo/mono"); |
7840ced1 | 787 | |
28fcb7dc GM |
788 | /* I think bps and sampling_rate are the same, but who knows. |
789 | Check this. and use SND_DSP_SPEED for both. */ | |
790 | if (sd->sample_rate > 0) | |
791 | { | |
792 | val = sd->sample_rate; | |
62725a92 GM |
793 | if (ioctl (sd->fd, SNDCTL_DSP_SPEED, &sd->sample_rate) < 0) |
794 | sound_perror ("Could not set sound speed"); | |
795 | else if (val != sd->sample_rate) | |
796 | sound_warning ("Could not set sample rate"); | |
28fcb7dc | 797 | } |
7840ced1 | 798 | |
3887b449 GM |
799 | if (sd->volume > 0) |
800 | { | |
801 | int volume = sd->volume & 0xff; | |
802 | volume |= volume << 8; | |
28fcb7dc GM |
803 | /* This may fail if there is no mixer. Ignore the failure. */ |
804 | ioctl (sd->fd, SOUND_MIXER_WRITE_PCM, &volume); | |
3887b449 | 805 | } |
a4ff5d67 | 806 | |
b5cb1ada | 807 | turn_on_atimers (1); |
bb6e8cee GM |
808 | #ifdef SIGIO |
809 | sigunblock (sigmask (SIGIO)); | |
810 | #endif | |
7840ced1 GM |
811 | } |
812 | ||
813 | ||
814 | /* Close device SD if it is open. */ | |
815 | ||
816 | static void | |
817 | vox_close (sd) | |
818 | struct sound_device *sd; | |
819 | { | |
820 | if (sd->fd >= 0) | |
821 | { | |
bb6e8cee GM |
822 | /* On GNU/Linux, it seems that the device driver doesn't like to |
823 | be interrupted by a signal. Block the ones we know to cause | |
824 | troubles. */ | |
825 | #ifdef SIGIO | |
826 | sigblock (sigmask (SIGIO)); | |
827 | #endif | |
b5cb1ada | 828 | turn_on_atimers (0); |
a4ff5d67 | 829 | |
bb6e8cee | 830 | /* Flush sound data, and reset the device. */ |
7840ced1 | 831 | ioctl (sd->fd, SNDCTL_DSP_SYNC, NULL); |
a4ff5d67 | 832 | |
b5cb1ada | 833 | turn_on_atimers (1); |
bb6e8cee GM |
834 | #ifdef SIGIO |
835 | sigunblock (sigmask (SIGIO)); | |
836 | #endif | |
7840ced1 GM |
837 | |
838 | /* Close the device. */ | |
68c45bf0 | 839 | emacs_close (sd->fd); |
7840ced1 GM |
840 | sd->fd = -1; |
841 | } | |
842 | } | |
843 | ||
844 | ||
d1299cde | 845 | /* Choose device-dependent format for device SD from sound file S. */ |
7840ced1 GM |
846 | |
847 | static void | |
d1299cde | 848 | vox_choose_format (sd, s) |
7840ced1 | 849 | struct sound_device *sd; |
d1299cde | 850 | struct sound *s; |
7840ced1 | 851 | { |
d1299cde | 852 | if (s->type == RIFF) |
7840ced1 | 853 | { |
d1299cde | 854 | struct wav_header *h = (struct wav_header *) s->header; |
7840ced1 GM |
855 | if (h->precision == 8) |
856 | sd->format = AFMT_U8; | |
857 | else if (h->precision == 16) | |
858 | sd->format = AFMT_S16_LE; | |
859 | else | |
860 | error ("Unsupported WAV file format"); | |
861 | } | |
d1299cde | 862 | else if (s->type == SUN_AUDIO) |
7840ced1 | 863 | { |
d1299cde | 864 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
865 | switch (header->encoding) |
866 | { | |
867 | case AU_ENCODING_ULAW_8: | |
868 | case AU_ENCODING_IEEE32: | |
869 | case AU_ENCODING_IEEE64: | |
870 | sd->format = AFMT_MU_LAW; | |
871 | break; | |
a4ff5d67 | 872 | |
7840ced1 GM |
873 | case AU_ENCODING_8: |
874 | case AU_ENCODING_16: | |
875 | case AU_ENCODING_24: | |
876 | case AU_ENCODING_32: | |
877 | sd->format = AFMT_S16_LE; | |
878 | break; | |
879 | ||
880 | default: | |
881 | error ("Unsupported AU file format"); | |
882 | } | |
883 | } | |
884 | else | |
885 | abort (); | |
886 | } | |
887 | ||
888 | ||
889 | /* Initialize device SD. Set up the interface functions in the device | |
890 | structure. */ | |
891 | ||
2d2643f6 | 892 | static int |
7840ced1 GM |
893 | vox_init (sd) |
894 | struct sound_device *sd; | |
895 | { | |
2d2643f6 JD |
896 | char *file; |
897 | int fd; | |
898 | ||
899 | /* Open the sound device. Default is /dev/dsp. */ | |
900 | if (sd->file) | |
901 | file = sd->file; | |
902 | else | |
903 | file = DEFAULT_SOUND_DEVICE; | |
904 | fd = emacs_open (file, O_WRONLY, 0); | |
905 | if (fd >= 0) | |
906 | emacs_close (fd); | |
907 | else | |
908 | return 0; | |
909 | ||
7840ced1 GM |
910 | sd->fd = -1; |
911 | sd->open = vox_open; | |
912 | sd->close = vox_close; | |
913 | sd->configure = vox_configure; | |
914 | sd->choose_format = vox_choose_format; | |
915 | sd->write = vox_write; | |
2d2643f6 JD |
916 | sd->period_size = NULL; |
917 | ||
918 | return 1; | |
7840ced1 GM |
919 | } |
920 | ||
7840ced1 GM |
921 | /* Write NBYTES bytes from BUFFER to device SD. */ |
922 | ||
923 | static void | |
924 | vox_write (sd, buffer, nbytes) | |
925 | struct sound_device *sd; | |
dca0fc1c | 926 | const char *buffer; |
7840ced1 GM |
927 | int nbytes; |
928 | { | |
68c45bf0 | 929 | int nwritten = emacs_write (sd->fd, buffer, nbytes); |
7840ced1 | 930 | if (nwritten < 0) |
62725a92 | 931 | sound_perror ("Error writing to sound device"); |
7840ced1 GM |
932 | } |
933 | ||
2d2643f6 JD |
934 | #ifdef HAVE_ALSA |
935 | /*********************************************************************** | |
936 | ALSA Driver Interface | |
937 | ***********************************************************************/ | |
938 | ||
939 | /* This driver is available on GNU/Linux. */ | |
940 | ||
941 | static void | |
942 | alsa_sound_perror (msg, err) | |
943 | char *msg; | |
944 | int err; | |
945 | { | |
946 | error ("%s: %s", msg, snd_strerror (err)); | |
947 | } | |
948 | ||
949 | struct alsa_params | |
950 | { | |
951 | snd_pcm_t *handle; | |
952 | snd_pcm_hw_params_t *hwparams; | |
953 | snd_pcm_sw_params_t *swparams; | |
954 | snd_pcm_uframes_t period_size; | |
955 | }; | |
956 | ||
957 | /* Open device SD. If SD->file is non-null, open that device, | |
958 | otherwise use a default device name. */ | |
959 | ||
960 | static void | |
961 | alsa_open (sd) | |
962 | struct sound_device *sd; | |
963 | { | |
964 | char *file; | |
965 | struct alsa_params *p; | |
966 | int err; | |
967 | ||
968 | /* Open the sound device. Default is "default". */ | |
969 | if (sd->file) | |
970 | file = sd->file; | |
971 | else | |
972 | file = DEFAULT_ALSA_SOUND_DEVICE; | |
973 | ||
974 | p = xmalloc (sizeof (*p)); | |
975 | p->handle = NULL; | |
976 | p->hwparams = NULL; | |
977 | p->swparams = NULL; | |
978 | ||
979 | sd->fd = -1; | |
980 | sd->data = p; | |
981 | ||
982 | ||
3fc7a865 JD |
983 | err = snd_pcm_open (&p->handle, file, SND_PCM_STREAM_PLAYBACK, 0); |
984 | if (err < 0) | |
2d2643f6 JD |
985 | alsa_sound_perror (file, err); |
986 | } | |
987 | ||
988 | static int | |
989 | alsa_period_size (sd) | |
990 | struct sound_device *sd; | |
991 | { | |
992 | struct alsa_params *p = (struct alsa_params *) sd->data; | |
a28de257 JD |
993 | int fact = snd_pcm_format_size (sd->format, 1) * sd->channels; |
994 | return p->period_size * (fact > 0 ? fact : 1); | |
2d2643f6 JD |
995 | } |
996 | ||
997 | static void | |
998 | alsa_configure (sd) | |
999 | struct sound_device *sd; | |
1000 | { | |
1001 | int val, err, dir; | |
dcc88121 | 1002 | unsigned uval; |
2d2643f6 JD |
1003 | struct alsa_params *p = (struct alsa_params *) sd->data; |
1004 | snd_pcm_uframes_t buffer_size; | |
1005 | ||
1006 | xassert (p->handle != 0); | |
1007 | ||
3fc7a865 JD |
1008 | err = snd_pcm_hw_params_malloc (&p->hwparams); |
1009 | if (err < 0) | |
2d2643f6 JD |
1010 | alsa_sound_perror ("Could not allocate hardware parameter structure", err); |
1011 | ||
3fc7a865 JD |
1012 | err = snd_pcm_sw_params_malloc (&p->swparams); |
1013 | if (err < 0) | |
2d2643f6 JD |
1014 | alsa_sound_perror ("Could not allocate software parameter structure", err); |
1015 | ||
3fc7a865 JD |
1016 | err = snd_pcm_hw_params_any (p->handle, p->hwparams); |
1017 | if (err < 0) | |
2d2643f6 JD |
1018 | alsa_sound_perror ("Could not initialize hardware parameter structure", err); |
1019 | ||
3fc7a865 JD |
1020 | err = snd_pcm_hw_params_set_access (p->handle, p->hwparams, |
1021 | SND_PCM_ACCESS_RW_INTERLEAVED); | |
1022 | if (err < 0) | |
2d2643f6 JD |
1023 | alsa_sound_perror ("Could not set access type", err); |
1024 | ||
1025 | val = sd->format; | |
3fc7a865 | 1026 | err = snd_pcm_hw_params_set_format (p->handle, p->hwparams, val); |
ed1f0a45 | 1027 | if (err < 0) |
2d2643f6 JD |
1028 | alsa_sound_perror ("Could not set sound format", err); |
1029 | ||
dcc88121 JD |
1030 | uval = sd->sample_rate; |
1031 | err = snd_pcm_hw_params_set_rate_near (p->handle, p->hwparams, &uval, 0); | |
3fc7a865 | 1032 | if (err < 0) |
2d2643f6 | 1033 | alsa_sound_perror ("Could not set sample rate", err); |
ed1f0a45 | 1034 | |
2d2643f6 | 1035 | val = sd->channels; |
3fc7a865 JD |
1036 | err = snd_pcm_hw_params_set_channels (p->handle, p->hwparams, val); |
1037 | if (err < 0) | |
2d2643f6 JD |
1038 | alsa_sound_perror ("Could not set channel count", err); |
1039 | ||
3fc7a865 JD |
1040 | err = snd_pcm_hw_params (p->handle, p->hwparams); |
1041 | if (err < 0) | |
07a7837c JD |
1042 | alsa_sound_perror ("Could not set parameters", err); |
1043 | ||
2d2643f6 JD |
1044 | |
1045 | err = snd_pcm_hw_params_get_period_size (p->hwparams, &p->period_size, &dir); | |
1046 | if (err < 0) | |
1047 | alsa_sound_perror ("Unable to get period size for playback", err); | |
1048 | ||
1049 | err = snd_pcm_hw_params_get_buffer_size (p->hwparams, &buffer_size); | |
1050 | if (err < 0) | |
1051 | alsa_sound_perror("Unable to get buffer size for playback", err); | |
1052 | ||
2d2643f6 JD |
1053 | err = snd_pcm_sw_params_current (p->handle, p->swparams); |
1054 | if (err < 0) | |
1055 | alsa_sound_perror ("Unable to determine current swparams for playback", | |
1056 | err); | |
1057 | ||
1058 | /* Start the transfer when the buffer is almost full */ | |
1059 | err = snd_pcm_sw_params_set_start_threshold (p->handle, p->swparams, | |
1060 | (buffer_size / p->period_size) | |
1061 | * p->period_size); | |
1062 | if (err < 0) | |
1063 | alsa_sound_perror ("Unable to set start threshold mode for playback", err); | |
1064 | ||
1065 | /* Allow the transfer when at least period_size samples can be processed */ | |
1066 | err = snd_pcm_sw_params_set_avail_min (p->handle, p->swparams, p->period_size); | |
1067 | if (err < 0) | |
1068 | alsa_sound_perror ("Unable to set avail min for playback", err); | |
1069 | ||
2d2643f6 JD |
1070 | err = snd_pcm_sw_params (p->handle, p->swparams); |
1071 | if (err < 0) | |
1072 | alsa_sound_perror ("Unable to set sw params for playback\n", err); | |
1073 | ||
1074 | snd_pcm_hw_params_free (p->hwparams); | |
1075 | p->hwparams = NULL; | |
1076 | snd_pcm_sw_params_free (p->swparams); | |
1077 | p->swparams = NULL; | |
ed1f0a45 | 1078 | |
3fc7a865 JD |
1079 | err = snd_pcm_prepare (p->handle); |
1080 | if (err < 0) | |
2d2643f6 | 1081 | alsa_sound_perror ("Could not prepare audio interface for use", err); |
ed1f0a45 | 1082 | |
2d2643f6 JD |
1083 | if (sd->volume > 0) |
1084 | { | |
1085 | int chn; | |
1086 | snd_mixer_t *handle; | |
1087 | snd_mixer_elem_t *e; | |
1088 | char *file = sd->file ? sd->file : DEFAULT_ALSA_SOUND_DEVICE; | |
1089 | ||
1090 | if (snd_mixer_open (&handle, 0) >= 0) | |
1091 | { | |
1092 | if (snd_mixer_attach (handle, file) >= 0 | |
1093 | && snd_mixer_load (handle) >= 0 | |
1094 | && snd_mixer_selem_register (handle, NULL, NULL) >= 0) | |
1095 | for (e = snd_mixer_first_elem (handle); | |
1096 | e; | |
1097 | e = snd_mixer_elem_next (e)) | |
1098 | { | |
1099 | if (snd_mixer_selem_has_playback_volume (e)) | |
1100 | { | |
646d0d12 | 1101 | long pmin, pmax, vol; |
2d2643f6 | 1102 | snd_mixer_selem_get_playback_volume_range (e, &pmin, &pmax); |
646d0d12 | 1103 | vol = pmin + (sd->volume * (pmax - pmin)) / 100; |
ed1f0a45 | 1104 | |
2d2643f6 JD |
1105 | for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++) |
1106 | snd_mixer_selem_set_playback_volume (e, chn, vol); | |
1107 | } | |
1108 | } | |
1109 | snd_mixer_close(handle); | |
1110 | } | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | ||
1115 | /* Close device SD if it is open. */ | |
1116 | ||
1117 | static void | |
1118 | alsa_close (sd) | |
1119 | struct sound_device *sd; | |
1120 | { | |
1121 | struct alsa_params *p = (struct alsa_params *) sd->data; | |
1122 | if (p) | |
1123 | { | |
1124 | if (p->hwparams) | |
1125 | snd_pcm_hw_params_free (p->hwparams); | |
1126 | if (p->swparams) | |
1127 | snd_pcm_sw_params_free (p->swparams); | |
1128 | if (p->handle) | |
1129 | { | |
dcc88121 | 1130 | snd_pcm_drain (p->handle); |
2d2643f6 JD |
1131 | snd_pcm_close (p->handle); |
1132 | } | |
1133 | free (p); | |
1134 | } | |
1135 | } | |
1136 | ||
1137 | /* Choose device-dependent format for device SD from sound file S. */ | |
1138 | ||
1139 | static void | |
1140 | alsa_choose_format (sd, s) | |
1141 | struct sound_device *sd; | |
1142 | struct sound *s; | |
1143 | { | |
1144 | struct alsa_params *p = (struct alsa_params *) sd->data; | |
1145 | if (s->type == RIFF) | |
1146 | { | |
1147 | struct wav_header *h = (struct wav_header *) s->header; | |
1148 | if (h->precision == 8) | |
1149 | sd->format = SND_PCM_FORMAT_U8; | |
1150 | else if (h->precision == 16) | |
1151 | sd->format = SND_PCM_FORMAT_S16_LE; | |
1152 | else | |
1153 | error ("Unsupported WAV file format"); | |
1154 | } | |
1155 | else if (s->type == SUN_AUDIO) | |
1156 | { | |
1157 | struct au_header *header = (struct au_header *) s->header; | |
1158 | switch (header->encoding) | |
1159 | { | |
1160 | case AU_ENCODING_ULAW_8: | |
1161 | sd->format = SND_PCM_FORMAT_MU_LAW; | |
1162 | break; | |
1163 | case AU_ENCODING_ALAW_8: | |
1164 | sd->format = SND_PCM_FORMAT_A_LAW; | |
1165 | break; | |
1166 | case AU_ENCODING_IEEE32: | |
1167 | sd->format = SND_PCM_FORMAT_FLOAT_BE; | |
1168 | break; | |
1169 | case AU_ENCODING_IEEE64: | |
1170 | sd->format = SND_PCM_FORMAT_FLOAT64_BE; | |
1171 | break; | |
1172 | case AU_ENCODING_8: | |
1173 | sd->format = SND_PCM_FORMAT_S8; | |
1174 | break; | |
1175 | case AU_ENCODING_16: | |
1176 | sd->format = SND_PCM_FORMAT_S16_BE; | |
1177 | break; | |
1178 | case AU_ENCODING_24: | |
1179 | sd->format = SND_PCM_FORMAT_S24_BE; | |
1180 | break; | |
1181 | case AU_ENCODING_32: | |
1182 | sd->format = SND_PCM_FORMAT_S32_BE; | |
1183 | break; | |
1184 | ||
1185 | default: | |
1186 | error ("Unsupported AU file format"); | |
1187 | } | |
1188 | } | |
1189 | else | |
1190 | abort (); | |
1191 | } | |
1192 | ||
1193 | ||
1194 | /* Write NBYTES bytes from BUFFER to device SD. */ | |
1195 | ||
1196 | static void | |
1197 | alsa_write (sd, buffer, nbytes) | |
1198 | struct sound_device *sd; | |
1199 | const char *buffer; | |
1200 | int nbytes; | |
1201 | { | |
1202 | struct alsa_params *p = (struct alsa_params *) sd->data; | |
1203 | ||
1204 | /* The the third parameter to snd_pcm_writei is frames, not bytes. */ | |
1205 | int fact = snd_pcm_format_size (sd->format, 1) * sd->channels; | |
1206 | int nwritten = 0; | |
1207 | int err; | |
1208 | ||
1209 | while (nwritten < nbytes) | |
1210 | { | |
a28de257 JD |
1211 | snd_pcm_uframes_t frames = (nbytes - nwritten)/fact; |
1212 | if (frames == 0) break; | |
24f01470 | 1213 | |
a28de257 | 1214 | err = snd_pcm_writei (p->handle, buffer + nwritten, frames); |
3fc7a865 | 1215 | if (err < 0) |
2d2643f6 | 1216 | { |
2d2643f6 JD |
1217 | if (err == -EPIPE) |
1218 | { /* under-run */ | |
1219 | err = snd_pcm_prepare (p->handle); | |
1220 | if (err < 0) | |
1221 | alsa_sound_perror ("Can't recover from underrun, prepare failed", | |
1222 | err); | |
1223 | } | |
1224 | else if (err == -ESTRPIPE) | |
1225 | { | |
1226 | while ((err = snd_pcm_resume (p->handle)) == -EAGAIN) | |
1227 | sleep(1); /* wait until the suspend flag is released */ | |
1228 | if (err < 0) | |
1229 | { | |
1230 | err = snd_pcm_prepare (p->handle); | |
1231 | if (err < 0) | |
1232 | alsa_sound_perror ("Can't recover from suspend, " | |
1233 | "prepare failed", | |
1234 | err); | |
1235 | } | |
1236 | } | |
ed1f0a45 | 1237 | else |
2d2643f6 | 1238 | alsa_sound_perror ("Error writing to sound device", err); |
ed1f0a45 | 1239 | |
2d2643f6 JD |
1240 | } |
1241 | else | |
1242 | nwritten += err * fact; | |
1243 | } | |
1244 | } | |
1245 | ||
1246 | static void | |
1247 | snd_error_quiet (file, line, function, err, fmt) | |
1248 | const char *file; | |
1249 | int line; | |
1250 | const char *function; | |
1251 | int err; | |
1252 | const char *fmt; | |
1253 | { | |
1254 | } | |
1255 | ||
1256 | /* Initialize device SD. Set up the interface functions in the device | |
1257 | structure. */ | |
1258 | ||
1259 | static int | |
1260 | alsa_init (sd) | |
1261 | struct sound_device *sd; | |
1262 | { | |
1263 | char *file; | |
1264 | snd_pcm_t *handle; | |
1265 | int err; | |
1266 | ||
1267 | /* Open the sound device. Default is "default". */ | |
1268 | if (sd->file) | |
1269 | file = sd->file; | |
1270 | else | |
1271 | file = DEFAULT_ALSA_SOUND_DEVICE; | |
1272 | ||
1273 | snd_lib_error_set_handler ((snd_lib_error_handler_t) snd_error_quiet); | |
1274 | err = snd_pcm_open (&handle, file, SND_PCM_STREAM_PLAYBACK, 0); | |
1275 | snd_lib_error_set_handler (NULL); | |
1276 | if (err < 0) | |
dcc88121 JD |
1277 | return 0; |
1278 | snd_pcm_close (handle); | |
2d2643f6 JD |
1279 | |
1280 | sd->fd = -1; | |
1281 | sd->open = alsa_open; | |
1282 | sd->close = alsa_close; | |
1283 | sd->configure = alsa_configure; | |
1284 | sd->choose_format = alsa_choose_format; | |
1285 | sd->write = alsa_write; | |
1286 | sd->period_size = alsa_period_size; | |
1287 | ||
1288 | return 1; | |
1289 | } | |
1290 | ||
1291 | #endif /* HAVE_ALSA */ | |
1292 | ||
1293 | ||
f60ae425 BK |
1294 | /* END: Non Windows functions */ |
1295 | #else /* WINDOWSNT */ | |
1296 | ||
1297 | /* BEGIN: Windows specific functions */ | |
1298 | ||
8db52afe JB |
1299 | #define SOUND_WARNING(fun, error, text) \ |
1300 | { \ | |
1301 | char buf[1024]; \ | |
1302 | char err_string[MAXERRORLENGTH]; \ | |
24f01470 | 1303 | fun (error, err_string, sizeof (err_string)); \ |
8db52afe JB |
1304 | _snprintf (buf, sizeof (buf), "%s\nError: %s", \ |
1305 | text, err_string); \ | |
1306 | sound_warning (buf); \ | |
24f01470 JB |
1307 | } |
1308 | ||
f60ae425 BK |
1309 | static int |
1310 | do_play_sound (psz_file, ui_volume) | |
06c3eeed JB |
1311 | const char *psz_file; |
1312 | unsigned long ui_volume; | |
f60ae425 | 1313 | { |
06c3eeed JB |
1314 | int i_result = 0; |
1315 | MCIERROR mci_error = 0; | |
1316 | char sz_cmd_buf[520] = {0}; | |
1317 | char sz_ret_buf[520] = {0}; | |
1318 | MMRESULT mm_result = MMSYSERR_NOERROR; | |
1319 | unsigned long ui_volume_org = 0; | |
1320 | BOOL b_reset_volume = FALSE; | |
1321 | ||
24f01470 JB |
1322 | memset (sz_cmd_buf, 0, sizeof (sz_cmd_buf)); |
1323 | memset (sz_ret_buf, 0, sizeof (sz_ret_buf)); | |
06c3eeed JB |
1324 | sprintf (sz_cmd_buf, |
1325 | "open \"%s\" alias GNUEmacs_PlaySound_Device wait", | |
1326 | psz_file); | |
24f01470 | 1327 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, sizeof (sz_ret_buf), NULL); |
f60ae425 BK |
1328 | if (mci_error != 0) |
1329 | { | |
24f01470 JB |
1330 | SOUND_WARNING (mciGetErrorString, mci_error, |
1331 | "The open mciSendString command failed to open " | |
1332 | "the specified sound file."); | |
06c3eeed | 1333 | i_result = (int) mci_error; |
f60ae425 BK |
1334 | return i_result; |
1335 | } | |
1336 | if ((ui_volume > 0) && (ui_volume != UINT_MAX)) | |
1337 | { | |
06c3eeed | 1338 | mm_result = waveOutGetVolume ((HWAVEOUT) WAVE_MAPPER, &ui_volume_org); |
f60ae425 BK |
1339 | if (mm_result == MMSYSERR_NOERROR) |
1340 | { | |
06c3eeed JB |
1341 | b_reset_volume = TRUE; |
1342 | mm_result = waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume); | |
24f01470 | 1343 | if (mm_result != MMSYSERR_NOERROR) |
f60ae425 | 1344 | { |
24f01470 JB |
1345 | SOUND_WARNING (waveOutGetErrorText, mm_result, |
1346 | "waveOutSetVolume failed to set the volume level " | |
1347 | "of the WAVE_MAPPER device.\n" | |
1348 | "As a result, the user selected volume level will " | |
1349 | "not be used."); | |
f60ae425 BK |
1350 | } |
1351 | } | |
1352 | else | |
1353 | { | |
24f01470 JB |
1354 | SOUND_WARNING (waveOutGetErrorText, mm_result, |
1355 | "waveOutGetVolume failed to obtain the original " | |
06c3eeed | 1356 | "volume level of the WAVE_MAPPER device.\n" |
24f01470 | 1357 | "As a result, the user selected volume level will " |
06c3eeed | 1358 | "not be used."); |
f60ae425 BK |
1359 | } |
1360 | } | |
24f01470 JB |
1361 | memset (sz_cmd_buf, 0, sizeof (sz_cmd_buf)); |
1362 | memset (sz_ret_buf, 0, sizeof (sz_ret_buf)); | |
f60ae425 | 1363 | strcpy (sz_cmd_buf, "play GNUEmacs_PlaySound_Device wait"); |
24f01470 | 1364 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, sizeof (sz_ret_buf), NULL); |
f60ae425 BK |
1365 | if (mci_error != 0) |
1366 | { | |
24f01470 JB |
1367 | SOUND_WARNING (mciGetErrorString, mci_error, |
1368 | "The play mciSendString command failed to play the " | |
1369 | "opened sound file."); | |
06c3eeed | 1370 | i_result = (int) mci_error; |
f60ae425 | 1371 | } |
24f01470 JB |
1372 | memset (sz_cmd_buf, 0, sizeof (sz_cmd_buf)); |
1373 | memset (sz_ret_buf, 0, sizeof (sz_ret_buf)); | |
f60ae425 | 1374 | strcpy (sz_cmd_buf, "close GNUEmacs_PlaySound_Device wait"); |
24f01470 | 1375 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, sizeof (sz_ret_buf), NULL); |
f60ae425 BK |
1376 | if (b_reset_volume == TRUE) |
1377 | { | |
24f01470 | 1378 | mm_result = waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume_org); |
f60ae425 BK |
1379 | if (mm_result != MMSYSERR_NOERROR) |
1380 | { | |
24f01470 JB |
1381 | SOUND_WARNING (waveOutGetErrorText, mm_result, |
1382 | "waveOutSetVolume failed to reset the original volume " | |
06c3eeed | 1383 | "level of the WAVE_MAPPER device."); |
f60ae425 BK |
1384 | } |
1385 | } | |
1386 | return i_result; | |
1387 | } | |
1388 | ||
1389 | /* END: Windows specific functions */ | |
1390 | ||
1391 | #endif /* WINDOWSNT */ | |
1392 | ||
f60ae425 BK |
1393 | DEFUN ("play-sound-internal", Fplay_sound_internal, Splay_sound_internal, 1, 1, 0, |
1394 | doc: /* Play sound SOUND. | |
1395 | ||
ed1f0a45 | 1396 | Internal use only, use `play-sound' instead. */) |
f60ae425 BK |
1397 | (sound) |
1398 | Lisp_Object sound; | |
1399 | { | |
1400 | Lisp_Object attrs[SOUND_ATTR_SENTINEL]; | |
1401 | int count = SPECPDL_INDEX (); | |
1402 | ||
1403 | #ifndef WINDOWSNT | |
1404 | Lisp_Object file; | |
1405 | struct gcpro gcpro1, gcpro2; | |
f60ae425 BK |
1406 | Lisp_Object args[2]; |
1407 | #else /* WINDOWSNT */ | |
06c3eeed JB |
1408 | int len = 0; |
1409 | Lisp_Object lo_file = {0}; | |
1410 | char * psz_file = NULL; | |
1411 | unsigned long ui_volume_tmp = UINT_MAX; | |
1412 | unsigned long ui_volume = UINT_MAX; | |
1413 | int i_result = 0; | |
f60ae425 BK |
1414 | #endif /* WINDOWSNT */ |
1415 | ||
1416 | /* Parse the sound specification. Give up if it is invalid. */ | |
1417 | if (!parse_sound (sound, attrs)) | |
1418 | error ("Invalid sound specification"); | |
1419 | ||
1420 | #ifndef WINDOWSNT | |
1421 | file = Qnil; | |
1422 | GCPRO2 (sound, file); | |
8e6ec322 RS |
1423 | current_sound_device = (struct sound_device *) xmalloc (sizeof (struct sound_device)); |
1424 | bzero (current_sound_device, sizeof (struct sound_device)); | |
1425 | current_sound = (struct sound *) xmalloc (sizeof (struct sound)); | |
1426 | bzero (current_sound, sizeof (struct sound)); | |
f60ae425 | 1427 | record_unwind_protect (sound_cleanup, Qnil); |
8e6ec322 | 1428 | current_sound->header = (char *) alloca (MAX_SOUND_HEADER_BYTES); |
f60ae425 BK |
1429 | |
1430 | if (STRINGP (attrs[SOUND_FILE])) | |
1431 | { | |
1432 | /* Open the sound file. */ | |
8e6ec322 RS |
1433 | current_sound->fd = openp (Fcons (Vdata_directory, Qnil), |
1434 | attrs[SOUND_FILE], Qnil, &file, Qnil); | |
1435 | if (current_sound->fd < 0) | |
f60ae425 BK |
1436 | sound_perror ("Could not open sound file"); |
1437 | ||
1438 | /* Read the first bytes from the file. */ | |
8e6ec322 RS |
1439 | current_sound->header_size |
1440 | = emacs_read (current_sound->fd, current_sound->header, | |
1441 | MAX_SOUND_HEADER_BYTES); | |
1442 | if (current_sound->header_size < 0) | |
f60ae425 BK |
1443 | sound_perror ("Invalid sound file header"); |
1444 | } | |
1445 | else | |
1446 | { | |
8e6ec322 RS |
1447 | current_sound->data = attrs[SOUND_DATA]; |
1448 | current_sound->header_size = min (MAX_SOUND_HEADER_BYTES, SBYTES (current_sound->data)); | |
1449 | bcopy (SDATA (current_sound->data), current_sound->header, current_sound->header_size); | |
f60ae425 BK |
1450 | } |
1451 | ||
1452 | /* Find out the type of sound. Give up if we can't tell. */ | |
8e6ec322 | 1453 | find_sound_type (current_sound); |
f60ae425 BK |
1454 | |
1455 | /* Set up a device. */ | |
1456 | if (STRINGP (attrs[SOUND_DEVICE])) | |
1457 | { | |
1458 | int len = SCHARS (attrs[SOUND_DEVICE]); | |
8e6ec322 RS |
1459 | current_sound_device->file = (char *) alloca (len + 1); |
1460 | strcpy (current_sound_device->file, SDATA (attrs[SOUND_DEVICE])); | |
f60ae425 BK |
1461 | } |
1462 | ||
1463 | if (INTEGERP (attrs[SOUND_VOLUME])) | |
8e6ec322 | 1464 | current_sound_device->volume = XFASTINT (attrs[SOUND_VOLUME]); |
f60ae425 | 1465 | else if (FLOATP (attrs[SOUND_VOLUME])) |
8e6ec322 | 1466 | current_sound_device->volume = XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; |
7840ced1 | 1467 | |
f60ae425 BK |
1468 | args[0] = Qplay_sound_functions; |
1469 | args[1] = sound; | |
1470 | Frun_hook_with_args (2, args); | |
1471 | ||
2d2643f6 JD |
1472 | #ifdef HAVE_ALSA |
1473 | if (!alsa_init (current_sound_device)) | |
1474 | #endif | |
1475 | if (!vox_init (current_sound_device)) | |
1476 | error ("No usable sound device driver found"); | |
f60ae425 BK |
1477 | |
1478 | /* Open the device. */ | |
8e6ec322 | 1479 | current_sound_device->open (current_sound_device); |
f60ae425 BK |
1480 | |
1481 | /* Play the sound. */ | |
8e6ec322 | 1482 | current_sound->play (current_sound, current_sound_device); |
f60ae425 BK |
1483 | |
1484 | /* Clean up. */ | |
f60ae425 | 1485 | UNGCPRO; |
06c3eeed | 1486 | |
f60ae425 | 1487 | #else /* WINDOWSNT */ |
06c3eeed JB |
1488 | |
1489 | lo_file = Fexpand_file_name (attrs[SOUND_FILE], Qnil); | |
1490 | len = XSTRING (lo_file)->size; | |
1491 | psz_file = (char *) alloca (len + 1); | |
f60ae425 BK |
1492 | strcpy (psz_file, XSTRING (lo_file)->data); |
1493 | if (INTEGERP (attrs[SOUND_VOLUME])) | |
1494 | { | |
06c3eeed | 1495 | ui_volume_tmp = XFASTINT (attrs[SOUND_VOLUME]); |
f60ae425 BK |
1496 | } |
1497 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
1498 | { | |
06c3eeed | 1499 | ui_volume_tmp = (unsigned long) XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; |
f60ae425 BK |
1500 | } |
1501 | /* | |
1502 | Based on some experiments I have conducted, a value of 100 or less | |
1503 | for the sound volume is much too low. You cannot even hear it. | |
1504 | A value of UINT_MAX indicates that you wish for the sound to played | |
1505 | at the maximum possible volume. A value of UINT_MAX/2 plays the | |
1506 | sound at 50% maximum volume. Therefore the value passed to do_play_sound | |
06c3eeed | 1507 | (and thus to waveOutSetVolume) must be some fraction of UINT_MAX. |
f60ae425 | 1508 | The following code adjusts the user specified volume level appropriately. |
06c3eeed | 1509 | */ |
f60ae425 BK |
1510 | if ((ui_volume_tmp > 0) && (ui_volume_tmp <= 100)) |
1511 | { | |
06c3eeed | 1512 | ui_volume = ui_volume_tmp * (UINT_MAX / 100); |
f60ae425 | 1513 | } |
06c3eeed JB |
1514 | i_result = do_play_sound (psz_file, ui_volume); |
1515 | ||
f60ae425 | 1516 | #endif /* WINDOWSNT */ |
06c3eeed | 1517 | |
f60ae425 BK |
1518 | unbind_to (count, Qnil); |
1519 | return Qnil; | |
1520 | } | |
7840ced1 GM |
1521 | \f |
1522 | /*********************************************************************** | |
1523 | Initialization | |
1524 | ***********************************************************************/ | |
1525 | ||
1526 | void | |
1527 | syms_of_sound () | |
1528 | { | |
d67b4f80 | 1529 | QCdevice = intern_c_string(":device"); |
7840ced1 | 1530 | staticpro (&QCdevice); |
d67b4f80 | 1531 | QCvolume = intern_c_string (":volume"); |
7840ced1 | 1532 | staticpro (&QCvolume); |
d67b4f80 | 1533 | Qsound = intern_c_string ("sound"); |
7840ced1 | 1534 | staticpro (&Qsound); |
d67b4f80 | 1535 | Qplay_sound_functions = intern_c_string ("play-sound-functions"); |
2a53558d | 1536 | staticpro (&Qplay_sound_functions); |
7840ced1 | 1537 | |
14e415e7 | 1538 | defsubr (&Splay_sound_internal); |
7840ced1 GM |
1539 | } |
1540 | ||
1541 | ||
1542 | void | |
1543 | init_sound () | |
1544 | { | |
1545 | } | |
1546 | ||
1547 | #endif /* HAVE_SOUND */ | |
ab5796a9 MB |
1548 | |
1549 | /* arch-tag: dd850ad8-0433-4e2c-9cba-b7aeeccc0dbd | |
1550 | (do not change this comment) */ |