Commit | Line | Data |
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7840ced1 | 1 | /* sound.c -- sound support. |
acaf905b | 2 | Copyright (C) 1998-1999, 2001-2012 Free Software Foundation, Inc. |
7840ced1 GM |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
7840ced1 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
7840ced1 GM |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7840ced1 GM |
18 | |
19 | /* Written by Gerd Moellmann <gerd@gnu.org>. Tested with Luigi's | |
20 | driver on FreeBSD 2.2.7 with a SoundBlaster 16. */ | |
21 | ||
f60ae425 BK |
22 | /* |
23 | Modified by Ben Key <Bkey1@tampabay.rr.com> to add a partial | |
24 | implementation of the play-sound specification for Windows. | |
25 | ||
26 | Notes: | |
27 | In the Windows implementation of play-sound-internal only the | |
28 | :file and :volume keywords are supported. The :device keyword, | |
29 | if present, is ignored. The :data keyword, if present, will | |
30 | cause an error to be generated. | |
31 | ||
32 | The Windows implementation of play-sound is implemented via the | |
33 | Win32 API functions mciSendString, waveOutGetVolume, and | |
06c3eeed | 34 | waveOutSetVolume which are exported by Winmm.dll. |
f60ae425 BK |
35 | */ |
36 | ||
7840ced1 GM |
37 | #include <config.h> |
38 | ||
39 | #if defined HAVE_SOUND | |
40 | ||
f60ae425 | 41 | /* BEGIN: Common Includes */ |
7840ced1 GM |
42 | #include <fcntl.h> |
43 | #include <unistd.h> | |
44 | #include <sys/types.h> | |
7840ced1 | 45 | #include <errno.h> |
d7306fe6 | 46 | #include <setjmp.h> |
53fab6e2 GM |
47 | #include "lisp.h" |
48 | #include "dispextern.h" | |
49 | #include "atimer.h" | |
bb6e8cee GM |
50 | #include <signal.h> |
51 | #include "syssignal.h" | |
f60ae425 BK |
52 | /* END: Common Includes */ |
53 | ||
54 | ||
55 | /* BEGIN: Non Windows Includes */ | |
56 | #ifndef WINDOWSNT | |
7840ced1 | 57 | |
502150e5 | 58 | #include <sys/ioctl.h> |
502150e5 | 59 | |
7840ced1 GM |
60 | /* FreeBSD has machine/soundcard.h. Voxware sound driver docs mention |
61 | sys/soundcard.h. So, let's try whatever's there. */ | |
62 | ||
63 | #ifdef HAVE_MACHINE_SOUNDCARD_H | |
64 | #include <machine/soundcard.h> | |
65 | #endif | |
66 | #ifdef HAVE_SYS_SOUNDCARD_H | |
67 | #include <sys/soundcard.h> | |
68 | #endif | |
80fcd514 | 69 | #ifdef HAVE_SOUNDCARD_H |
80fcd514 KR |
70 | #include <soundcard.h> |
71 | #endif | |
2d2643f6 | 72 | #ifdef HAVE_ALSA |
1d30a597 JD |
73 | #ifdef ALSA_SUBDIR_INCLUDE |
74 | #include <alsa/asoundlib.h> | |
75 | #else | |
2d2643f6 | 76 | #include <asoundlib.h> |
1d30a597 JD |
77 | #endif /* ALSA_SUBDIR_INCLUDE */ |
78 | #endif /* HAVE_ALSA */ | |
2d2643f6 | 79 | |
f60ae425 BK |
80 | /* END: Non Windows Includes */ |
81 | ||
82 | #else /* WINDOWSNT */ | |
83 | ||
84 | /* BEGIN: Windows Specific Includes */ | |
85 | #include <stdio.h> | |
f60ae425 BK |
86 | #include <limits.h> |
87 | #include <windows.h> | |
88 | #include <mmsystem.h> | |
89 | /* END: Windows Specific Includes */ | |
90 | ||
91 | #endif /* WINDOWSNT */ | |
92 | ||
93 | /* BEGIN: Common Definitions */ | |
f60ae425 BK |
94 | |
95 | /* Symbols. */ | |
96 | ||
955cbe7b PE |
97 | static Lisp_Object QCvolume, QCdevice; |
98 | static Lisp_Object Qsound; | |
99 | static Lisp_Object Qplay_sound_functions; | |
f60ae425 BK |
100 | |
101 | /* Indices of attributes in a sound attributes vector. */ | |
102 | ||
103 | enum sound_attr | |
104 | { | |
105 | SOUND_FILE, | |
106 | SOUND_DATA, | |
107 | SOUND_DEVICE, | |
108 | SOUND_VOLUME, | |
109 | SOUND_ATTR_SENTINEL | |
110 | }; | |
111 | ||
f60ae425 BK |
112 | /* END: Common Definitions */ |
113 | ||
114 | /* BEGIN: Non Windows Definitions */ | |
115 | #ifndef WINDOWSNT | |
80fcd514 KR |
116 | |
117 | #ifndef DEFAULT_SOUND_DEVICE | |
118 | #define DEFAULT_SOUND_DEVICE "/dev/dsp" | |
119 | #endif | |
7840ced1 | 120 | |
7840ced1 GM |
121 | |
122 | /* Structure forward declarations. */ | |
123 | ||
d1299cde | 124 | struct sound; |
7840ced1 GM |
125 | struct sound_device; |
126 | ||
127 | /* The file header of RIFF-WAVE files (*.wav). Files are always in | |
128 | little-endian byte-order. */ | |
129 | ||
130 | struct wav_header | |
131 | { | |
132 | u_int32_t magic; | |
133 | u_int32_t length; | |
134 | u_int32_t chunk_type; | |
135 | u_int32_t chunk_format; | |
136 | u_int32_t chunk_length; | |
137 | u_int16_t format; | |
138 | u_int16_t channels; | |
139 | u_int32_t sample_rate; | |
140 | u_int32_t bytes_per_second; | |
141 | u_int16_t sample_size; | |
142 | u_int16_t precision; | |
143 | u_int32_t chunk_data; | |
144 | u_int32_t data_length; | |
145 | }; | |
146 | ||
147 | /* The file header of Sun adio files (*.au). Files are always in | |
148 | big-endian byte-order. */ | |
149 | ||
150 | struct au_header | |
151 | { | |
152 | /* ASCII ".snd" */ | |
153 | u_int32_t magic_number; | |
a4ff5d67 | 154 | |
7840ced1 GM |
155 | /* Offset of data part from start of file. Minimum value is 24. */ |
156 | u_int32_t data_offset; | |
a4ff5d67 | 157 | |
7840ced1 GM |
158 | /* Size of data part, 0xffffffff if unknown. */ |
159 | u_int32_t data_size; | |
160 | ||
161 | /* Data encoding format. | |
162 | 1 8-bit ISDN u-law | |
163 | 2 8-bit linear PCM (REF-PCM) | |
164 | 3 16-bit linear PCM | |
165 | 4 24-bit linear PCM | |
166 | 5 32-bit linear PCM | |
167 | 6 32-bit IEEE floating-point | |
168 | 7 64-bit IEEE floating-point | |
169 | 23 8-bit u-law compressed using CCITT 0.721 ADPCM voice data | |
170 | encoding scheme. */ | |
171 | u_int32_t encoding; | |
172 | ||
173 | /* Number of samples per second. */ | |
174 | u_int32_t sample_rate; | |
175 | ||
176 | /* Number of interleaved channels. */ | |
177 | u_int32_t channels; | |
178 | }; | |
179 | ||
180 | /* Maximum of all sound file headers sizes. */ | |
181 | ||
182 | #define MAX_SOUND_HEADER_BYTES \ | |
183 | max (sizeof (struct wav_header), sizeof (struct au_header)) | |
184 | ||
185 | /* Interface structure for sound devices. */ | |
186 | ||
187 | struct sound_device | |
188 | { | |
189 | /* The name of the device or null meaning use a default device name. */ | |
190 | char *file; | |
191 | ||
192 | /* File descriptor of the device. */ | |
193 | int fd; | |
194 | ||
195 | /* Device-dependent format. */ | |
196 | int format; | |
197 | ||
198 | /* Volume (0..100). Zero means unspecified. */ | |
199 | int volume; | |
200 | ||
201 | /* Sample size. */ | |
202 | int sample_size; | |
203 | ||
204 | /* Sample rate. */ | |
205 | int sample_rate; | |
206 | ||
207 | /* Bytes per second. */ | |
208 | int bps; | |
209 | ||
210 | /* 1 = mono, 2 = stereo, 0 = don't set. */ | |
211 | int channels; | |
a4ff5d67 | 212 | |
7840ced1 | 213 | /* Open device SD. */ |
f57e2426 | 214 | void (* open) (struct sound_device *sd); |
7840ced1 GM |
215 | |
216 | /* Close device SD. */ | |
f57e2426 | 217 | void (* close) (struct sound_device *sd); |
7840ced1 | 218 | |
91af3942 | 219 | /* Configure SD according to device-dependent parameters. */ |
f57e2426 | 220 | void (* configure) (struct sound_device *device); |
a4ff5d67 | 221 | |
d1299cde | 222 | /* Choose a device-dependent format for outputting sound S. */ |
f57e2426 J |
223 | void (* choose_format) (struct sound_device *sd, |
224 | struct sound *s); | |
7840ced1 | 225 | |
2d2643f6 JD |
226 | /* Return a preferred data size in bytes to be sent to write (below) |
227 | each time. 2048 is used if this is NULL. */ | |
d311d28c | 228 | ptrdiff_t (* period_size) (struct sound_device *sd); |
2d2643f6 | 229 | |
7840ced1 | 230 | /* Write NYBTES bytes from BUFFER to device SD. */ |
f57e2426 | 231 | void (* write) (struct sound_device *sd, const char *buffer, |
d311d28c | 232 | ptrdiff_t nbytes); |
7840ced1 GM |
233 | |
234 | /* A place for devices to store additional data. */ | |
235 | void *data; | |
236 | }; | |
237 | ||
238 | /* An enumerator for each supported sound file type. */ | |
239 | ||
240 | enum sound_type | |
241 | { | |
242 | RIFF, | |
243 | SUN_AUDIO | |
244 | }; | |
245 | ||
246 | /* Interface structure for sound files. */ | |
247 | ||
d1299cde | 248 | struct sound |
7840ced1 GM |
249 | { |
250 | /* The type of the file. */ | |
251 | enum sound_type type; | |
252 | ||
d1299cde | 253 | /* File descriptor of a sound file. */ |
7840ced1 GM |
254 | int fd; |
255 | ||
d1299cde GM |
256 | /* Pointer to sound file header. This contains header_size bytes |
257 | read from the start of a sound file. */ | |
7840ced1 GM |
258 | char *header; |
259 | ||
40ba43b4 | 260 | /* Number of bytes read from sound file. This is always <= |
d1299cde GM |
261 | MAX_SOUND_HEADER_BYTES. */ |
262 | int header_size; | |
263 | ||
264 | /* Sound data, if a string. */ | |
265 | Lisp_Object data; | |
266 | ||
267 | /* Play sound file S on device SD. */ | |
f57e2426 | 268 | void (* play) (struct sound *s, struct sound_device *sd); |
7840ced1 GM |
269 | }; |
270 | ||
14e415e7 | 271 | /* These are set during `play-sound-internal' so that sound_cleanup has |
7840ced1 GM |
272 | access to them. */ |
273 | ||
b7c513d0 PE |
274 | static struct sound_device *current_sound_device; |
275 | static struct sound *current_sound; | |
7840ced1 GM |
276 | |
277 | /* Function prototypes. */ | |
278 | ||
f57e2426 J |
279 | static void vox_open (struct sound_device *); |
280 | static void vox_configure (struct sound_device *); | |
281 | static void vox_close (struct sound_device *sd); | |
282 | static void vox_choose_format (struct sound_device *, struct sound *); | |
283 | static int vox_init (struct sound_device *); | |
d311d28c | 284 | static void vox_write (struct sound_device *, const char *, ptrdiff_t); |
f57e2426 J |
285 | static void find_sound_type (struct sound *); |
286 | static u_int32_t le2hl (u_int32_t); | |
287 | static u_int16_t le2hs (u_int16_t); | |
288 | static u_int32_t be2hl (u_int32_t); | |
289 | static int wav_init (struct sound *); | |
290 | static void wav_play (struct sound *, struct sound_device *); | |
291 | static int au_init (struct sound *); | |
292 | static void au_play (struct sound *, struct sound_device *); | |
7840ced1 | 293 | |
9680b9d0 | 294 | #if 0 /* Currently not used. */ |
f57e2426 | 295 | static u_int16_t be2hs (u_int16_t); |
9680b9d0 GM |
296 | #endif |
297 | ||
f60ae425 BK |
298 | /* END: Non Windows Definitions */ |
299 | #else /* WINDOWSNT */ | |
300 | ||
301 | /* BEGIN: Windows Specific Definitions */ | |
f57e2426 | 302 | static int do_play_sound (const char *, unsigned long); |
f60ae425 BK |
303 | /* |
304 | END: Windows Specific Definitions */ | |
305 | #endif /* WINDOWSNT */ | |
7840ced1 GM |
306 | |
307 | \f | |
308 | /*********************************************************************** | |
309 | General | |
310 | ***********************************************************************/ | |
311 | ||
f60ae425 BK |
312 | /* BEGIN: Common functions */ |
313 | ||
7840ced1 GM |
314 | /* Like perror, but signals an error. */ |
315 | ||
845ca893 | 316 | static _Noreturn void |
8ea90aa3 | 317 | sound_perror (const char *msg) |
7840ced1 | 318 | { |
3297e2a1 AS |
319 | int saved_errno = errno; |
320 | ||
62725a92 GM |
321 | turn_on_atimers (1); |
322 | #ifdef SIGIO | |
323 | sigunblock (sigmask (SIGIO)); | |
324 | #endif | |
3297e2a1 AS |
325 | if (saved_errno != 0) |
326 | error ("%s: %s", msg, strerror (saved_errno)); | |
62725a92 GM |
327 | else |
328 | error ("%s", msg); | |
329 | } | |
330 | ||
331 | ||
332 | /* Display a warning message. */ | |
333 | ||
334 | static void | |
8ea90aa3 | 335 | sound_warning (const char *msg) |
62725a92 | 336 | { |
c136c10f | 337 | message ("%s", msg); |
7840ced1 GM |
338 | } |
339 | ||
340 | ||
341 | /* Parse sound specification SOUND, and fill ATTRS with what is | |
342 | found. Value is non-zero if SOUND Is a valid sound specification. | |
343 | A valid sound specification is a list starting with the symbol | |
344 | `sound'. The rest of the list is a property list which may | |
345 | contain the following key/value pairs: | |
346 | ||
347 | - `:file FILE' | |
348 | ||
349 | FILE is the sound file to play. If it isn't an absolute name, | |
350 | it's searched under `data-directory'. | |
351 | ||
d1299cde GM |
352 | - `:data DATA' |
353 | ||
354 | DATA is a string containing sound data. Either :file or :data | |
355 | may be present, but not both. | |
356 | ||
7840ced1 GM |
357 | - `:device DEVICE' |
358 | ||
359 | DEVICE is the name of the device to play on, e.g. "/dev/dsp2". | |
360 | If not specified, a default device is used. | |
361 | ||
362 | - `:volume VOL' | |
363 | ||
2a53558d GM |
364 | VOL must be an integer in the range [0, 100], or a float in the |
365 | range [0, 1]. */ | |
7840ced1 GM |
366 | |
367 | static int | |
971de7fb | 368 | parse_sound (Lisp_Object sound, Lisp_Object *attrs) |
7840ced1 GM |
369 | { |
370 | /* SOUND must be a list starting with the symbol `sound'. */ | |
371 | if (!CONSP (sound) || !EQ (XCAR (sound), Qsound)) | |
372 | return 0; | |
373 | ||
374 | sound = XCDR (sound); | |
375 | attrs[SOUND_FILE] = Fplist_get (sound, QCfile); | |
d1299cde | 376 | attrs[SOUND_DATA] = Fplist_get (sound, QCdata); |
7840ced1 GM |
377 | attrs[SOUND_DEVICE] = Fplist_get (sound, QCdevice); |
378 | attrs[SOUND_VOLUME] = Fplist_get (sound, QCvolume); | |
379 | ||
f60ae425 | 380 | #ifndef WINDOWSNT |
d1299cde GM |
381 | /* File name or data must be specified. */ |
382 | if (!STRINGP (attrs[SOUND_FILE]) | |
383 | && !STRINGP (attrs[SOUND_DATA])) | |
7840ced1 | 384 | return 0; |
f60ae425 BK |
385 | #else /* WINDOWSNT */ |
386 | /* | |
387 | Data is not supported in Windows. Therefore a | |
388 | File name MUST be supplied. | |
389 | */ | |
390 | if (!STRINGP (attrs[SOUND_FILE])) | |
391 | { | |
392 | return 0; | |
393 | } | |
394 | #endif /* WINDOWSNT */ | |
7840ced1 GM |
395 | |
396 | /* Volume must be in the range 0..100 or unspecified. */ | |
397 | if (!NILP (attrs[SOUND_VOLUME])) | |
398 | { | |
2a53558d GM |
399 | if (INTEGERP (attrs[SOUND_VOLUME])) |
400 | { | |
401 | if (XINT (attrs[SOUND_VOLUME]) < 0 | |
402 | || XINT (attrs[SOUND_VOLUME]) > 100) | |
403 | return 0; | |
404 | } | |
405 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
406 | { | |
407 | if (XFLOAT_DATA (attrs[SOUND_VOLUME]) < 0 | |
408 | || XFLOAT_DATA (attrs[SOUND_VOLUME]) > 1) | |
409 | return 0; | |
410 | } | |
411 | else | |
7840ced1 GM |
412 | return 0; |
413 | } | |
414 | ||
f60ae425 | 415 | #ifndef WINDOWSNT |
7840ced1 GM |
416 | /* Device must be a string or unspecified. */ |
417 | if (!NILP (attrs[SOUND_DEVICE]) | |
418 | && !STRINGP (attrs[SOUND_DEVICE])) | |
419 | return 0; | |
f60ae425 BK |
420 | #endif /* WINDOWSNT */ |
421 | /* | |
422 | Since device is ignored in Windows, it does not matter | |
423 | what it is. | |
424 | */ | |
7840ced1 GM |
425 | return 1; |
426 | } | |
427 | ||
f60ae425 BK |
428 | /* END: Common functions */ |
429 | ||
430 | /* BEGIN: Non Windows functions */ | |
431 | #ifndef WINDOWSNT | |
7840ced1 GM |
432 | |
433 | /* Find out the type of the sound file whose file descriptor is FD. | |
d1299cde | 434 | S is the sound file structure to fill in. */ |
7840ced1 GM |
435 | |
436 | static void | |
971de7fb | 437 | find_sound_type (struct sound *s) |
7840ced1 | 438 | { |
d1299cde GM |
439 | if (!wav_init (s) && !au_init (s)) |
440 | error ("Unknown sound format"); | |
7840ced1 GM |
441 | } |
442 | ||
443 | ||
14e415e7 | 444 | /* Function installed by play-sound-internal with record_unwind_protect. */ |
7840ced1 GM |
445 | |
446 | static Lisp_Object | |
971de7fb | 447 | sound_cleanup (Lisp_Object arg) |
7840ced1 | 448 | { |
8e6ec322 RS |
449 | if (current_sound_device->close) |
450 | current_sound_device->close (current_sound_device); | |
451 | if (current_sound->fd > 0) | |
452 | emacs_close (current_sound->fd); | |
baad03f0 AS |
453 | xfree (current_sound_device); |
454 | xfree (current_sound); | |
3887b449 GM |
455 | |
456 | return Qnil; | |
7840ced1 GM |
457 | } |
458 | ||
7840ced1 GM |
459 | /*********************************************************************** |
460 | Byte-order Conversion | |
461 | ***********************************************************************/ | |
462 | ||
463 | /* Convert 32-bit value VALUE which is in little-endian byte-order | |
464 | to host byte-order. */ | |
465 | ||
466 | static u_int32_t | |
971de7fb | 467 | le2hl (u_int32_t value) |
7840ced1 | 468 | { |
671d409f | 469 | #ifdef WORDS_BIGENDIAN |
7840ced1 GM |
470 | unsigned char *p = (unsigned char *) &value; |
471 | value = p[0] + (p[1] << 8) + (p[2] << 16) + (p[3] << 24); | |
472 | #endif | |
473 | return value; | |
474 | } | |
475 | ||
476 | ||
477 | /* Convert 16-bit value VALUE which is in little-endian byte-order | |
478 | to host byte-order. */ | |
479 | ||
480 | static u_int16_t | |
971de7fb | 481 | le2hs (u_int16_t value) |
7840ced1 | 482 | { |
671d409f | 483 | #ifdef WORDS_BIGENDIAN |
7840ced1 GM |
484 | unsigned char *p = (unsigned char *) &value; |
485 | value = p[0] + (p[1] << 8); | |
486 | #endif | |
487 | return value; | |
488 | } | |
489 | ||
490 | ||
491 | /* Convert 32-bit value VALUE which is in big-endian byte-order | |
492 | to host byte-order. */ | |
493 | ||
494 | static u_int32_t | |
971de7fb | 495 | be2hl (u_int32_t value) |
7840ced1 | 496 | { |
671d409f | 497 | #ifndef WORDS_BIGENDIAN |
7840ced1 GM |
498 | unsigned char *p = (unsigned char *) &value; |
499 | value = p[3] + (p[2] << 8) + (p[1] << 16) + (p[0] << 24); | |
500 | #endif | |
501 | return value; | |
502 | } | |
503 | ||
504 | ||
9680b9d0 GM |
505 | #if 0 /* Currently not used. */ |
506 | ||
7840ced1 GM |
507 | /* Convert 16-bit value VALUE which is in big-endian byte-order |
508 | to host byte-order. */ | |
509 | ||
510 | static u_int16_t | |
7c3320d8 | 511 | be2hs (u_int16_t value) |
7840ced1 | 512 | { |
671d409f | 513 | #ifndef WORDS_BIGENDIAN |
7840ced1 GM |
514 | unsigned char *p = (unsigned char *) &value; |
515 | value = p[1] + (p[0] << 8); | |
516 | #endif | |
517 | return value; | |
518 | } | |
519 | ||
9680b9d0 | 520 | #endif /* 0 */ |
7840ced1 | 521 | |
7840ced1 GM |
522 | /*********************************************************************** |
523 | RIFF-WAVE (*.wav) | |
524 | ***********************************************************************/ | |
525 | ||
d1299cde | 526 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
527 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
528 | sound file. If the file is a WAV-format file, set up interface | |
d1299cde | 529 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
530 | Value is non-zero if the file is a WAV file. */ |
531 | ||
532 | static int | |
971de7fb | 533 | wav_init (struct sound *s) |
7840ced1 | 534 | { |
d1299cde GM |
535 | struct wav_header *header = (struct wav_header *) s->header; |
536 | ||
537 | if (s->header_size < sizeof *header | |
72af86bd | 538 | || memcmp (s->header, "RIFF", 4) != 0) |
7840ced1 GM |
539 | return 0; |
540 | ||
541 | /* WAV files are in little-endian order. Convert the header | |
542 | if on a big-endian machine. */ | |
543 | header->magic = le2hl (header->magic); | |
544 | header->length = le2hl (header->length); | |
545 | header->chunk_type = le2hl (header->chunk_type); | |
546 | header->chunk_format = le2hl (header->chunk_format); | |
547 | header->chunk_length = le2hl (header->chunk_length); | |
548 | header->format = le2hs (header->format); | |
549 | header->channels = le2hs (header->channels); | |
550 | header->sample_rate = le2hl (header->sample_rate); | |
551 | header->bytes_per_second = le2hl (header->bytes_per_second); | |
552 | header->sample_size = le2hs (header->sample_size); | |
553 | header->precision = le2hs (header->precision); | |
554 | header->chunk_data = le2hl (header->chunk_data); | |
555 | header->data_length = le2hl (header->data_length); | |
556 | ||
557 | /* Set up the interface functions for WAV. */ | |
d1299cde GM |
558 | s->type = RIFF; |
559 | s->play = wav_play; | |
7840ced1 GM |
560 | |
561 | return 1; | |
a4ff5d67 | 562 | } |
7840ced1 GM |
563 | |
564 | ||
d1299cde | 565 | /* Play RIFF-WAVE audio file S on sound device SD. */ |
7840ced1 GM |
566 | |
567 | static void | |
971de7fb | 568 | wav_play (struct sound *s, struct sound_device *sd) |
7840ced1 | 569 | { |
d1299cde | 570 | struct wav_header *header = (struct wav_header *) s->header; |
7840ced1 GM |
571 | |
572 | /* Let the device choose a suitable device-dependent format | |
573 | for the file. */ | |
d1299cde | 574 | sd->choose_format (sd, s); |
a4ff5d67 | 575 | |
7840ced1 GM |
576 | /* Configure the device. */ |
577 | sd->sample_size = header->sample_size; | |
578 | sd->sample_rate = header->sample_rate; | |
579 | sd->bps = header->bytes_per_second; | |
580 | sd->channels = header->channels; | |
581 | sd->configure (sd); | |
582 | ||
583 | /* Copy sound data to the device. The WAV file specification is | |
584 | actually more complex. This simple scheme worked with all WAV | |
585 | files I found so far. If someone feels inclined to implement the | |
586 | whole RIFF-WAVE spec, please do. */ | |
d1299cde | 587 | if (STRINGP (s->data)) |
50060332 | 588 | sd->write (sd, SSDATA (s->data) + sizeof *header, |
d5db4077 | 589 | SBYTES (s->data) - sizeof *header); |
d1299cde GM |
590 | else |
591 | { | |
592 | char *buffer; | |
d311d28c PE |
593 | ptrdiff_t nbytes = 0; |
594 | ptrdiff_t blksize = sd->period_size ? sd->period_size (sd) : 2048; | |
595 | ptrdiff_t data_left = header->data_length; | |
a4ff5d67 | 596 | |
d1299cde GM |
597 | buffer = (char *) alloca (blksize); |
598 | lseek (s->fd, sizeof *header, SEEK_SET); | |
a28de257 JD |
599 | while (data_left > 0 |
600 | && (nbytes = emacs_read (s->fd, buffer, blksize)) > 0) | |
601 | { | |
602 | /* Don't play possible garbage at the end of file */ | |
603 | if (data_left < nbytes) nbytes = data_left; | |
604 | data_left -= nbytes; | |
605 | sd->write (sd, buffer, nbytes); | |
606 | } | |
7840ced1 | 607 | |
d1299cde | 608 | if (nbytes < 0) |
62725a92 | 609 | sound_perror ("Error reading sound file"); |
d1299cde | 610 | } |
7840ced1 GM |
611 | } |
612 | ||
613 | ||
7840ced1 GM |
614 | /*********************************************************************** |
615 | Sun Audio (*.au) | |
616 | ***********************************************************************/ | |
617 | ||
a4ff5d67 | 618 | /* Sun audio file encodings. */ |
7840ced1 GM |
619 | |
620 | enum au_encoding | |
621 | { | |
622 | AU_ENCODING_ULAW_8 = 1, | |
623 | AU_ENCODING_8, | |
624 | AU_ENCODING_16, | |
625 | AU_ENCODING_24, | |
626 | AU_ENCODING_32, | |
627 | AU_ENCODING_IEEE32, | |
628 | AU_ENCODING_IEEE64, | |
2d2643f6 JD |
629 | AU_COMPRESSED = 23, |
630 | AU_ENCODING_ALAW_8 = 27 | |
7840ced1 GM |
631 | }; |
632 | ||
633 | ||
d1299cde | 634 | /* Try to initialize sound file S from S->header. S->header |
7840ced1 GM |
635 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
636 | sound file. If the file is a AU-format file, set up interface | |
d1299cde | 637 | functions in S and convert header fields to host byte-order. |
7840ced1 GM |
638 | Value is non-zero if the file is an AU file. */ |
639 | ||
640 | static int | |
971de7fb | 641 | au_init (struct sound *s) |
7840ced1 | 642 | { |
d1299cde | 643 | struct au_header *header = (struct au_header *) s->header; |
a4ff5d67 | 644 | |
d1299cde | 645 | if (s->header_size < sizeof *header |
72af86bd | 646 | || memcmp (s->header, ".snd", 4) != 0) |
7840ced1 | 647 | return 0; |
a4ff5d67 | 648 | |
7840ced1 GM |
649 | header->magic_number = be2hl (header->magic_number); |
650 | header->data_offset = be2hl (header->data_offset); | |
651 | header->data_size = be2hl (header->data_size); | |
652 | header->encoding = be2hl (header->encoding); | |
653 | header->sample_rate = be2hl (header->sample_rate); | |
654 | header->channels = be2hl (header->channels); | |
a4ff5d67 | 655 | |
7840ced1 | 656 | /* Set up the interface functions for AU. */ |
d1299cde GM |
657 | s->type = SUN_AUDIO; |
658 | s->play = au_play; | |
7840ced1 GM |
659 | |
660 | return 1; | |
661 | } | |
662 | ||
663 | ||
d1299cde | 664 | /* Play Sun audio file S on sound device SD. */ |
7840ced1 GM |
665 | |
666 | static void | |
971de7fb | 667 | au_play (struct sound *s, struct sound_device *sd) |
7840ced1 | 668 | { |
d1299cde | 669 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
670 | |
671 | sd->sample_size = 0; | |
672 | sd->sample_rate = header->sample_rate; | |
673 | sd->bps = 0; | |
674 | sd->channels = header->channels; | |
d1299cde | 675 | sd->choose_format (sd, s); |
7840ced1 | 676 | sd->configure (sd); |
d1299cde GM |
677 | |
678 | if (STRINGP (s->data)) | |
50060332 | 679 | sd->write (sd, SSDATA (s->data) + header->data_offset, |
d5db4077 | 680 | SBYTES (s->data) - header->data_offset); |
d1299cde GM |
681 | else |
682 | { | |
d311d28c | 683 | ptrdiff_t blksize = sd->period_size ? sd->period_size (sd) : 2048; |
d1299cde | 684 | char *buffer; |
d311d28c | 685 | ptrdiff_t nbytes; |
a4ff5d67 | 686 | |
d1299cde GM |
687 | /* Seek */ |
688 | lseek (s->fd, header->data_offset, SEEK_SET); | |
a4ff5d67 | 689 | |
d1299cde GM |
690 | /* Copy sound data to the device. */ |
691 | buffer = (char *) alloca (blksize); | |
692 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) | |
693 | sd->write (sd, buffer, nbytes); | |
a4ff5d67 | 694 | |
d1299cde | 695 | if (nbytes < 0) |
62725a92 | 696 | sound_perror ("Error reading sound file"); |
d1299cde | 697 | } |
7840ced1 GM |
698 | } |
699 | ||
700 | ||
7840ced1 GM |
701 | /*********************************************************************** |
702 | Voxware Driver Interface | |
703 | ***********************************************************************/ | |
704 | ||
705 | /* This driver is available on GNU/Linux, and the free BSDs. FreeBSD | |
706 | has a compatible own driver aka Luigi's driver. */ | |
707 | ||
708 | ||
709 | /* Open device SD. If SD->file is non-null, open that device, | |
710 | otherwise use a default device name. */ | |
711 | ||
712 | static void | |
971de7fb | 713 | vox_open (struct sound_device *sd) |
7840ced1 | 714 | { |
8ea90aa3 | 715 | const char *file; |
a4ff5d67 | 716 | |
7840ced1 GM |
717 | /* Open the sound device. Default is /dev/dsp. */ |
718 | if (sd->file) | |
719 | file = sd->file; | |
720 | else | |
80fcd514 | 721 | file = DEFAULT_SOUND_DEVICE; |
a4ff5d67 | 722 | |
68c45bf0 | 723 | sd->fd = emacs_open (file, O_WRONLY, 0); |
7840ced1 GM |
724 | if (sd->fd < 0) |
725 | sound_perror (file); | |
726 | } | |
727 | ||
728 | ||
729 | /* Configure device SD from parameters in it. */ | |
730 | ||
731 | static void | |
971de7fb | 732 | vox_configure (struct sound_device *sd) |
7840ced1 | 733 | { |
28fcb7dc | 734 | int val; |
a4ff5d67 | 735 | |
7840ced1 GM |
736 | xassert (sd->fd >= 0); |
737 | ||
bb6e8cee GM |
738 | /* On GNU/Linux, it seems that the device driver doesn't like to be |
739 | interrupted by a signal. Block the ones we know to cause | |
740 | troubles. */ | |
b5cb1ada | 741 | turn_on_atimers (0); |
bb6e8cee GM |
742 | #ifdef SIGIO |
743 | sigblock (sigmask (SIGIO)); | |
744 | #endif | |
b5cb1ada | 745 | |
28fcb7dc GM |
746 | val = sd->format; |
747 | if (ioctl (sd->fd, SNDCTL_DSP_SETFMT, &sd->format) < 0 | |
748 | || val != sd->format) | |
62725a92 | 749 | sound_perror ("Could not set sound format"); |
7840ced1 | 750 | |
28fcb7dc GM |
751 | val = sd->channels != 1; |
752 | if (ioctl (sd->fd, SNDCTL_DSP_STEREO, &val) < 0 | |
753 | || val != (sd->channels != 1)) | |
62725a92 | 754 | sound_perror ("Could not set stereo/mono"); |
7840ced1 | 755 | |
28fcb7dc GM |
756 | /* I think bps and sampling_rate are the same, but who knows. |
757 | Check this. and use SND_DSP_SPEED for both. */ | |
758 | if (sd->sample_rate > 0) | |
759 | { | |
760 | val = sd->sample_rate; | |
62725a92 GM |
761 | if (ioctl (sd->fd, SNDCTL_DSP_SPEED, &sd->sample_rate) < 0) |
762 | sound_perror ("Could not set sound speed"); | |
763 | else if (val != sd->sample_rate) | |
764 | sound_warning ("Could not set sample rate"); | |
28fcb7dc | 765 | } |
7840ced1 | 766 | |
3887b449 GM |
767 | if (sd->volume > 0) |
768 | { | |
769 | int volume = sd->volume & 0xff; | |
770 | volume |= volume << 8; | |
28fcb7dc GM |
771 | /* This may fail if there is no mixer. Ignore the failure. */ |
772 | ioctl (sd->fd, SOUND_MIXER_WRITE_PCM, &volume); | |
3887b449 | 773 | } |
a4ff5d67 | 774 | |
b5cb1ada | 775 | turn_on_atimers (1); |
bb6e8cee GM |
776 | #ifdef SIGIO |
777 | sigunblock (sigmask (SIGIO)); | |
778 | #endif | |
7840ced1 GM |
779 | } |
780 | ||
781 | ||
782 | /* Close device SD if it is open. */ | |
783 | ||
784 | static void | |
971de7fb | 785 | vox_close (struct sound_device *sd) |
7840ced1 GM |
786 | { |
787 | if (sd->fd >= 0) | |
788 | { | |
bb6e8cee GM |
789 | /* On GNU/Linux, it seems that the device driver doesn't like to |
790 | be interrupted by a signal. Block the ones we know to cause | |
791 | troubles. */ | |
792 | #ifdef SIGIO | |
793 | sigblock (sigmask (SIGIO)); | |
794 | #endif | |
b5cb1ada | 795 | turn_on_atimers (0); |
a4ff5d67 | 796 | |
bb6e8cee | 797 | /* Flush sound data, and reset the device. */ |
7840ced1 | 798 | ioctl (sd->fd, SNDCTL_DSP_SYNC, NULL); |
a4ff5d67 | 799 | |
b5cb1ada | 800 | turn_on_atimers (1); |
bb6e8cee GM |
801 | #ifdef SIGIO |
802 | sigunblock (sigmask (SIGIO)); | |
803 | #endif | |
7840ced1 GM |
804 | |
805 | /* Close the device. */ | |
68c45bf0 | 806 | emacs_close (sd->fd); |
7840ced1 GM |
807 | sd->fd = -1; |
808 | } | |
809 | } | |
810 | ||
811 | ||
d1299cde | 812 | /* Choose device-dependent format for device SD from sound file S. */ |
7840ced1 GM |
813 | |
814 | static void | |
971de7fb | 815 | vox_choose_format (struct sound_device *sd, struct sound *s) |
7840ced1 | 816 | { |
d1299cde | 817 | if (s->type == RIFF) |
7840ced1 | 818 | { |
d1299cde | 819 | struct wav_header *h = (struct wav_header *) s->header; |
7840ced1 GM |
820 | if (h->precision == 8) |
821 | sd->format = AFMT_U8; | |
822 | else if (h->precision == 16) | |
823 | sd->format = AFMT_S16_LE; | |
824 | else | |
825 | error ("Unsupported WAV file format"); | |
826 | } | |
d1299cde | 827 | else if (s->type == SUN_AUDIO) |
7840ced1 | 828 | { |
d1299cde | 829 | struct au_header *header = (struct au_header *) s->header; |
7840ced1 GM |
830 | switch (header->encoding) |
831 | { | |
832 | case AU_ENCODING_ULAW_8: | |
833 | case AU_ENCODING_IEEE32: | |
834 | case AU_ENCODING_IEEE64: | |
835 | sd->format = AFMT_MU_LAW; | |
836 | break; | |
a4ff5d67 | 837 | |
7840ced1 GM |
838 | case AU_ENCODING_8: |
839 | case AU_ENCODING_16: | |
840 | case AU_ENCODING_24: | |
841 | case AU_ENCODING_32: | |
842 | sd->format = AFMT_S16_LE; | |
843 | break; | |
844 | ||
845 | default: | |
846 | error ("Unsupported AU file format"); | |
847 | } | |
848 | } | |
849 | else | |
850 | abort (); | |
851 | } | |
852 | ||
853 | ||
854 | /* Initialize device SD. Set up the interface functions in the device | |
855 | structure. */ | |
856 | ||
2d2643f6 | 857 | static int |
971de7fb | 858 | vox_init (struct sound_device *sd) |
7840ced1 | 859 | { |
8ea90aa3 | 860 | const char *file; |
2d2643f6 JD |
861 | int fd; |
862 | ||
863 | /* Open the sound device. Default is /dev/dsp. */ | |
864 | if (sd->file) | |
865 | file = sd->file; | |
866 | else | |
867 | file = DEFAULT_SOUND_DEVICE; | |
868 | fd = emacs_open (file, O_WRONLY, 0); | |
869 | if (fd >= 0) | |
870 | emacs_close (fd); | |
871 | else | |
872 | return 0; | |
873 | ||
7840ced1 GM |
874 | sd->fd = -1; |
875 | sd->open = vox_open; | |
876 | sd->close = vox_close; | |
877 | sd->configure = vox_configure; | |
878 | sd->choose_format = vox_choose_format; | |
879 | sd->write = vox_write; | |
2d2643f6 JD |
880 | sd->period_size = NULL; |
881 | ||
882 | return 1; | |
7840ced1 GM |
883 | } |
884 | ||
7840ced1 GM |
885 | /* Write NBYTES bytes from BUFFER to device SD. */ |
886 | ||
887 | static void | |
d311d28c | 888 | vox_write (struct sound_device *sd, const char *buffer, ptrdiff_t nbytes) |
7840ced1 | 889 | { |
3e047f51 | 890 | if (emacs_write (sd->fd, buffer, nbytes) != nbytes) |
62725a92 | 891 | sound_perror ("Error writing to sound device"); |
7840ced1 GM |
892 | } |
893 | ||
2d2643f6 JD |
894 | #ifdef HAVE_ALSA |
895 | /*********************************************************************** | |
896 | ALSA Driver Interface | |
897 | ***********************************************************************/ | |
898 | ||
899 | /* This driver is available on GNU/Linux. */ | |
900 | ||
12959e8e PE |
901 | #ifndef DEFAULT_ALSA_SOUND_DEVICE |
902 | #define DEFAULT_ALSA_SOUND_DEVICE "default" | |
903 | #endif | |
904 | ||
845ca893 | 905 | static _Noreturn void |
8ea90aa3 | 906 | alsa_sound_perror (const char *msg, int err) |
2d2643f6 JD |
907 | { |
908 | error ("%s: %s", msg, snd_strerror (err)); | |
909 | } | |
910 | ||
911 | struct alsa_params | |
912 | { | |
913 | snd_pcm_t *handle; | |
914 | snd_pcm_hw_params_t *hwparams; | |
915 | snd_pcm_sw_params_t *swparams; | |
916 | snd_pcm_uframes_t period_size; | |
917 | }; | |
918 | ||
919 | /* Open device SD. If SD->file is non-null, open that device, | |
920 | otherwise use a default device name. */ | |
921 | ||
922 | static void | |
971de7fb | 923 | alsa_open (struct sound_device *sd) |
2d2643f6 | 924 | { |
8ea90aa3 | 925 | const char *file; |
2d2643f6 JD |
926 | struct alsa_params *p; |
927 | int err; | |
928 | ||
929 | /* Open the sound device. Default is "default". */ | |
930 | if (sd->file) | |
931 | file = sd->file; | |
932 | else | |
933 | file = DEFAULT_ALSA_SOUND_DEVICE; | |
934 | ||
935 | p = xmalloc (sizeof (*p)); | |
936 | p->handle = NULL; | |
937 | p->hwparams = NULL; | |
938 | p->swparams = NULL; | |
939 | ||
940 | sd->fd = -1; | |
941 | sd->data = p; | |
942 | ||
943 | ||
3fc7a865 JD |
944 | err = snd_pcm_open (&p->handle, file, SND_PCM_STREAM_PLAYBACK, 0); |
945 | if (err < 0) | |
2d2643f6 JD |
946 | alsa_sound_perror (file, err); |
947 | } | |
948 | ||
d311d28c | 949 | static ptrdiff_t |
971de7fb | 950 | alsa_period_size (struct sound_device *sd) |
2d2643f6 JD |
951 | { |
952 | struct alsa_params *p = (struct alsa_params *) sd->data; | |
a28de257 JD |
953 | int fact = snd_pcm_format_size (sd->format, 1) * sd->channels; |
954 | return p->period_size * (fact > 0 ? fact : 1); | |
2d2643f6 JD |
955 | } |
956 | ||
957 | static void | |
971de7fb | 958 | alsa_configure (struct sound_device *sd) |
2d2643f6 JD |
959 | { |
960 | int val, err, dir; | |
dcc88121 | 961 | unsigned uval; |
2d2643f6 JD |
962 | struct alsa_params *p = (struct alsa_params *) sd->data; |
963 | snd_pcm_uframes_t buffer_size; | |
964 | ||
965 | xassert (p->handle != 0); | |
966 | ||
3fc7a865 JD |
967 | err = snd_pcm_hw_params_malloc (&p->hwparams); |
968 | if (err < 0) | |
2d2643f6 JD |
969 | alsa_sound_perror ("Could not allocate hardware parameter structure", err); |
970 | ||
3fc7a865 JD |
971 | err = snd_pcm_sw_params_malloc (&p->swparams); |
972 | if (err < 0) | |
2d2643f6 JD |
973 | alsa_sound_perror ("Could not allocate software parameter structure", err); |
974 | ||
3fc7a865 JD |
975 | err = snd_pcm_hw_params_any (p->handle, p->hwparams); |
976 | if (err < 0) | |
2d2643f6 JD |
977 | alsa_sound_perror ("Could not initialize hardware parameter structure", err); |
978 | ||
3fc7a865 JD |
979 | err = snd_pcm_hw_params_set_access (p->handle, p->hwparams, |
980 | SND_PCM_ACCESS_RW_INTERLEAVED); | |
981 | if (err < 0) | |
2d2643f6 JD |
982 | alsa_sound_perror ("Could not set access type", err); |
983 | ||
984 | val = sd->format; | |
3fc7a865 | 985 | err = snd_pcm_hw_params_set_format (p->handle, p->hwparams, val); |
ed1f0a45 | 986 | if (err < 0) |
2d2643f6 JD |
987 | alsa_sound_perror ("Could not set sound format", err); |
988 | ||
dcc88121 JD |
989 | uval = sd->sample_rate; |
990 | err = snd_pcm_hw_params_set_rate_near (p->handle, p->hwparams, &uval, 0); | |
3fc7a865 | 991 | if (err < 0) |
2d2643f6 | 992 | alsa_sound_perror ("Could not set sample rate", err); |
ed1f0a45 | 993 | |
2d2643f6 | 994 | val = sd->channels; |
3fc7a865 JD |
995 | err = snd_pcm_hw_params_set_channels (p->handle, p->hwparams, val); |
996 | if (err < 0) | |
2d2643f6 JD |
997 | alsa_sound_perror ("Could not set channel count", err); |
998 | ||
3fc7a865 JD |
999 | err = snd_pcm_hw_params (p->handle, p->hwparams); |
1000 | if (err < 0) | |
07a7837c JD |
1001 | alsa_sound_perror ("Could not set parameters", err); |
1002 | ||
2d2643f6 JD |
1003 | |
1004 | err = snd_pcm_hw_params_get_period_size (p->hwparams, &p->period_size, &dir); | |
1005 | if (err < 0) | |
1006 | alsa_sound_perror ("Unable to get period size for playback", err); | |
1007 | ||
1008 | err = snd_pcm_hw_params_get_buffer_size (p->hwparams, &buffer_size); | |
1009 | if (err < 0) | |
5e617bc2 | 1010 | alsa_sound_perror ("Unable to get buffer size for playback", err); |
2d2643f6 | 1011 | |
2d2643f6 JD |
1012 | err = snd_pcm_sw_params_current (p->handle, p->swparams); |
1013 | if (err < 0) | |
1014 | alsa_sound_perror ("Unable to determine current swparams for playback", | |
1015 | err); | |
1016 | ||
1017 | /* Start the transfer when the buffer is almost full */ | |
1018 | err = snd_pcm_sw_params_set_start_threshold (p->handle, p->swparams, | |
1019 | (buffer_size / p->period_size) | |
1020 | * p->period_size); | |
1021 | if (err < 0) | |
1022 | alsa_sound_perror ("Unable to set start threshold mode for playback", err); | |
1023 | ||
1024 | /* Allow the transfer when at least period_size samples can be processed */ | |
1025 | err = snd_pcm_sw_params_set_avail_min (p->handle, p->swparams, p->period_size); | |
1026 | if (err < 0) | |
1027 | alsa_sound_perror ("Unable to set avail min for playback", err); | |
1028 | ||
2d2643f6 JD |
1029 | err = snd_pcm_sw_params (p->handle, p->swparams); |
1030 | if (err < 0) | |
1031 | alsa_sound_perror ("Unable to set sw params for playback\n", err); | |
1032 | ||
1033 | snd_pcm_hw_params_free (p->hwparams); | |
1034 | p->hwparams = NULL; | |
1035 | snd_pcm_sw_params_free (p->swparams); | |
1036 | p->swparams = NULL; | |
ed1f0a45 | 1037 | |
3fc7a865 JD |
1038 | err = snd_pcm_prepare (p->handle); |
1039 | if (err < 0) | |
2d2643f6 | 1040 | alsa_sound_perror ("Could not prepare audio interface for use", err); |
ed1f0a45 | 1041 | |
2d2643f6 JD |
1042 | if (sd->volume > 0) |
1043 | { | |
1044 | int chn; | |
1045 | snd_mixer_t *handle; | |
1046 | snd_mixer_elem_t *e; | |
8ea90aa3 | 1047 | const char *file = sd->file ? sd->file : DEFAULT_ALSA_SOUND_DEVICE; |
2d2643f6 JD |
1048 | |
1049 | if (snd_mixer_open (&handle, 0) >= 0) | |
1050 | { | |
1051 | if (snd_mixer_attach (handle, file) >= 0 | |
1052 | && snd_mixer_load (handle) >= 0 | |
1053 | && snd_mixer_selem_register (handle, NULL, NULL) >= 0) | |
1054 | for (e = snd_mixer_first_elem (handle); | |
1055 | e; | |
1056 | e = snd_mixer_elem_next (e)) | |
1057 | { | |
1058 | if (snd_mixer_selem_has_playback_volume (e)) | |
1059 | { | |
646d0d12 | 1060 | long pmin, pmax, vol; |
2d2643f6 | 1061 | snd_mixer_selem_get_playback_volume_range (e, &pmin, &pmax); |
646d0d12 | 1062 | vol = pmin + (sd->volume * (pmax - pmin)) / 100; |
ed1f0a45 | 1063 | |
2d2643f6 JD |
1064 | for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++) |
1065 | snd_mixer_selem_set_playback_volume (e, chn, vol); | |
1066 | } | |
1067 | } | |
5e617bc2 | 1068 | snd_mixer_close (handle); |
2d2643f6 JD |
1069 | } |
1070 | } | |
1071 | } | |
1072 | ||
1073 | ||
1074 | /* Close device SD if it is open. */ | |
1075 | ||
1076 | static void | |
971de7fb | 1077 | alsa_close (struct sound_device *sd) |
2d2643f6 JD |
1078 | { |
1079 | struct alsa_params *p = (struct alsa_params *) sd->data; | |
1080 | if (p) | |
1081 | { | |
1082 | if (p->hwparams) | |
1083 | snd_pcm_hw_params_free (p->hwparams); | |
1084 | if (p->swparams) | |
1085 | snd_pcm_sw_params_free (p->swparams); | |
1086 | if (p->handle) | |
1087 | { | |
dcc88121 | 1088 | snd_pcm_drain (p->handle); |
2d2643f6 JD |
1089 | snd_pcm_close (p->handle); |
1090 | } | |
baad03f0 | 1091 | xfree (p); |
2d2643f6 JD |
1092 | } |
1093 | } | |
1094 | ||
1095 | /* Choose device-dependent format for device SD from sound file S. */ | |
1096 | ||
1097 | static void | |
971de7fb | 1098 | alsa_choose_format (struct sound_device *sd, struct sound *s) |
2d2643f6 | 1099 | { |
2d2643f6 JD |
1100 | if (s->type == RIFF) |
1101 | { | |
1102 | struct wav_header *h = (struct wav_header *) s->header; | |
1103 | if (h->precision == 8) | |
1104 | sd->format = SND_PCM_FORMAT_U8; | |
1105 | else if (h->precision == 16) | |
1106 | sd->format = SND_PCM_FORMAT_S16_LE; | |
1107 | else | |
1108 | error ("Unsupported WAV file format"); | |
1109 | } | |
1110 | else if (s->type == SUN_AUDIO) | |
1111 | { | |
1112 | struct au_header *header = (struct au_header *) s->header; | |
1113 | switch (header->encoding) | |
1114 | { | |
1115 | case AU_ENCODING_ULAW_8: | |
1116 | sd->format = SND_PCM_FORMAT_MU_LAW; | |
1117 | break; | |
1118 | case AU_ENCODING_ALAW_8: | |
1119 | sd->format = SND_PCM_FORMAT_A_LAW; | |
1120 | break; | |
1121 | case AU_ENCODING_IEEE32: | |
1122 | sd->format = SND_PCM_FORMAT_FLOAT_BE; | |
1123 | break; | |
1124 | case AU_ENCODING_IEEE64: | |
1125 | sd->format = SND_PCM_FORMAT_FLOAT64_BE; | |
1126 | break; | |
1127 | case AU_ENCODING_8: | |
1128 | sd->format = SND_PCM_FORMAT_S8; | |
1129 | break; | |
1130 | case AU_ENCODING_16: | |
1131 | sd->format = SND_PCM_FORMAT_S16_BE; | |
1132 | break; | |
1133 | case AU_ENCODING_24: | |
1134 | sd->format = SND_PCM_FORMAT_S24_BE; | |
1135 | break; | |
1136 | case AU_ENCODING_32: | |
1137 | sd->format = SND_PCM_FORMAT_S32_BE; | |
1138 | break; | |
1139 | ||
1140 | default: | |
1141 | error ("Unsupported AU file format"); | |
1142 | } | |
1143 | } | |
1144 | else | |
1145 | abort (); | |
1146 | } | |
1147 | ||
1148 | ||
1149 | /* Write NBYTES bytes from BUFFER to device SD. */ | |
1150 | ||
1151 | static void | |
d311d28c | 1152 | alsa_write (struct sound_device *sd, const char *buffer, ptrdiff_t nbytes) |
2d2643f6 JD |
1153 | { |
1154 | struct alsa_params *p = (struct alsa_params *) sd->data; | |
1155 | ||
1156 | /* The the third parameter to snd_pcm_writei is frames, not bytes. */ | |
1157 | int fact = snd_pcm_format_size (sd->format, 1) * sd->channels; | |
d311d28c | 1158 | ptrdiff_t nwritten = 0; |
2d2643f6 JD |
1159 | int err; |
1160 | ||
1161 | while (nwritten < nbytes) | |
1162 | { | |
a28de257 JD |
1163 | snd_pcm_uframes_t frames = (nbytes - nwritten)/fact; |
1164 | if (frames == 0) break; | |
24f01470 | 1165 | |
a28de257 | 1166 | err = snd_pcm_writei (p->handle, buffer + nwritten, frames); |
3fc7a865 | 1167 | if (err < 0) |
2d2643f6 | 1168 | { |
2d2643f6 JD |
1169 | if (err == -EPIPE) |
1170 | { /* under-run */ | |
1171 | err = snd_pcm_prepare (p->handle); | |
1172 | if (err < 0) | |
1173 | alsa_sound_perror ("Can't recover from underrun, prepare failed", | |
1174 | err); | |
1175 | } | |
1176 | else if (err == -ESTRPIPE) | |
1177 | { | |
1178 | while ((err = snd_pcm_resume (p->handle)) == -EAGAIN) | |
5e617bc2 | 1179 | sleep (1); /* wait until the suspend flag is released */ |
2d2643f6 JD |
1180 | if (err < 0) |
1181 | { | |
1182 | err = snd_pcm_prepare (p->handle); | |
1183 | if (err < 0) | |
1184 | alsa_sound_perror ("Can't recover from suspend, " | |
1185 | "prepare failed", | |
1186 | err); | |
1187 | } | |
1188 | } | |
ed1f0a45 | 1189 | else |
2d2643f6 | 1190 | alsa_sound_perror ("Error writing to sound device", err); |
ed1f0a45 | 1191 | |
2d2643f6 JD |
1192 | } |
1193 | else | |
1194 | nwritten += err * fact; | |
1195 | } | |
1196 | } | |
1197 | ||
1198 | static void | |
7c3320d8 JB |
1199 | snd_error_quiet (const char *file, int line, const char *function, int err, |
1200 | const char *fmt) | |
2d2643f6 JD |
1201 | { |
1202 | } | |
1203 | ||
1204 | /* Initialize device SD. Set up the interface functions in the device | |
1205 | structure. */ | |
1206 | ||
1207 | static int | |
971de7fb | 1208 | alsa_init (struct sound_device *sd) |
2d2643f6 | 1209 | { |
8ea90aa3 | 1210 | const char *file; |
2d2643f6 JD |
1211 | snd_pcm_t *handle; |
1212 | int err; | |
1213 | ||
1214 | /* Open the sound device. Default is "default". */ | |
1215 | if (sd->file) | |
1216 | file = sd->file; | |
1217 | else | |
1218 | file = DEFAULT_ALSA_SOUND_DEVICE; | |
1219 | ||
1220 | snd_lib_error_set_handler ((snd_lib_error_handler_t) snd_error_quiet); | |
1221 | err = snd_pcm_open (&handle, file, SND_PCM_STREAM_PLAYBACK, 0); | |
1222 | snd_lib_error_set_handler (NULL); | |
1223 | if (err < 0) | |
dcc88121 JD |
1224 | return 0; |
1225 | snd_pcm_close (handle); | |
2d2643f6 JD |
1226 | |
1227 | sd->fd = -1; | |
1228 | sd->open = alsa_open; | |
1229 | sd->close = alsa_close; | |
1230 | sd->configure = alsa_configure; | |
1231 | sd->choose_format = alsa_choose_format; | |
1232 | sd->write = alsa_write; | |
1233 | sd->period_size = alsa_period_size; | |
1234 | ||
1235 | return 1; | |
1236 | } | |
1237 | ||
1238 | #endif /* HAVE_ALSA */ | |
1239 | ||
1240 | ||
f60ae425 BK |
1241 | /* END: Non Windows functions */ |
1242 | #else /* WINDOWSNT */ | |
1243 | ||
1244 | /* BEGIN: Windows specific functions */ | |
1245 | ||
8db52afe JB |
1246 | #define SOUND_WARNING(fun, error, text) \ |
1247 | { \ | |
1248 | char buf[1024]; \ | |
1249 | char err_string[MAXERRORLENGTH]; \ | |
24f01470 | 1250 | fun (error, err_string, sizeof (err_string)); \ |
8db52afe JB |
1251 | _snprintf (buf, sizeof (buf), "%s\nError: %s", \ |
1252 | text, err_string); \ | |
1253 | sound_warning (buf); \ | |
24f01470 JB |
1254 | } |
1255 | ||
f60ae425 | 1256 | static int |
7c3320d8 | 1257 | do_play_sound (const char *psz_file, unsigned long ui_volume) |
f60ae425 | 1258 | { |
06c3eeed JB |
1259 | int i_result = 0; |
1260 | MCIERROR mci_error = 0; | |
1261 | char sz_cmd_buf[520] = {0}; | |
1262 | char sz_ret_buf[520] = {0}; | |
1263 | MMRESULT mm_result = MMSYSERR_NOERROR; | |
1264 | unsigned long ui_volume_org = 0; | |
1265 | BOOL b_reset_volume = FALSE; | |
1266 | ||
24f01470 JB |
1267 | memset (sz_cmd_buf, 0, sizeof (sz_cmd_buf)); |
1268 | memset (sz_ret_buf, 0, sizeof (sz_ret_buf)); | |
06c3eeed JB |
1269 | sprintf (sz_cmd_buf, |
1270 | "open \"%s\" alias GNUEmacs_PlaySound_Device wait", | |
1271 | psz_file); | |
24f01470 | 1272 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, sizeof (sz_ret_buf), NULL); |
f60ae425 BK |
1273 | if (mci_error != 0) |
1274 | { | |
24f01470 JB |
1275 | SOUND_WARNING (mciGetErrorString, mci_error, |
1276 | "The open mciSendString command failed to open " | |
1277 | "the specified sound file."); | |
06c3eeed | 1278 | i_result = (int) mci_error; |
f60ae425 BK |
1279 | return i_result; |
1280 | } | |
1281 | if ((ui_volume > 0) && (ui_volume != UINT_MAX)) | |
1282 | { | |
06c3eeed | 1283 | mm_result = waveOutGetVolume ((HWAVEOUT) WAVE_MAPPER, &ui_volume_org); |
f60ae425 BK |
1284 | if (mm_result == MMSYSERR_NOERROR) |
1285 | { | |
06c3eeed JB |
1286 | b_reset_volume = TRUE; |
1287 | mm_result = waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume); | |
24f01470 | 1288 | if (mm_result != MMSYSERR_NOERROR) |
f60ae425 | 1289 | { |
24f01470 JB |
1290 | SOUND_WARNING (waveOutGetErrorText, mm_result, |
1291 | "waveOutSetVolume failed to set the volume level " | |
1292 | "of the WAVE_MAPPER device.\n" | |
1293 | "As a result, the user selected volume level will " | |
1294 | "not be used."); | |
f60ae425 BK |
1295 | } |
1296 | } | |
1297 | else | |
1298 | { | |
24f01470 JB |
1299 | SOUND_WARNING (waveOutGetErrorText, mm_result, |
1300 | "waveOutGetVolume failed to obtain the original " | |
06c3eeed | 1301 | "volume level of the WAVE_MAPPER device.\n" |
24f01470 | 1302 | "As a result, the user selected volume level will " |
06c3eeed | 1303 | "not be used."); |
f60ae425 BK |
1304 | } |
1305 | } | |
24f01470 JB |
1306 | memset (sz_cmd_buf, 0, sizeof (sz_cmd_buf)); |
1307 | memset (sz_ret_buf, 0, sizeof (sz_ret_buf)); | |
f60ae425 | 1308 | strcpy (sz_cmd_buf, "play GNUEmacs_PlaySound_Device wait"); |
24f01470 | 1309 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, sizeof (sz_ret_buf), NULL); |
f60ae425 BK |
1310 | if (mci_error != 0) |
1311 | { | |
24f01470 JB |
1312 | SOUND_WARNING (mciGetErrorString, mci_error, |
1313 | "The play mciSendString command failed to play the " | |
1314 | "opened sound file."); | |
06c3eeed | 1315 | i_result = (int) mci_error; |
f60ae425 | 1316 | } |
24f01470 JB |
1317 | memset (sz_cmd_buf, 0, sizeof (sz_cmd_buf)); |
1318 | memset (sz_ret_buf, 0, sizeof (sz_ret_buf)); | |
f60ae425 | 1319 | strcpy (sz_cmd_buf, "close GNUEmacs_PlaySound_Device wait"); |
24f01470 | 1320 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, sizeof (sz_ret_buf), NULL); |
f60ae425 BK |
1321 | if (b_reset_volume == TRUE) |
1322 | { | |
24f01470 | 1323 | mm_result = waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume_org); |
f60ae425 BK |
1324 | if (mm_result != MMSYSERR_NOERROR) |
1325 | { | |
24f01470 JB |
1326 | SOUND_WARNING (waveOutGetErrorText, mm_result, |
1327 | "waveOutSetVolume failed to reset the original volume " | |
06c3eeed | 1328 | "level of the WAVE_MAPPER device."); |
f60ae425 BK |
1329 | } |
1330 | } | |
1331 | return i_result; | |
1332 | } | |
1333 | ||
1334 | /* END: Windows specific functions */ | |
1335 | ||
1336 | #endif /* WINDOWSNT */ | |
1337 | ||
f60ae425 BK |
1338 | DEFUN ("play-sound-internal", Fplay_sound_internal, Splay_sound_internal, 1, 1, 0, |
1339 | doc: /* Play sound SOUND. | |
1340 | ||
ed1f0a45 | 1341 | Internal use only, use `play-sound' instead. */) |
5842a27b | 1342 | (Lisp_Object sound) |
f60ae425 BK |
1343 | { |
1344 | Lisp_Object attrs[SOUND_ATTR_SENTINEL]; | |
d311d28c | 1345 | ptrdiff_t count = SPECPDL_INDEX (); |
f60ae425 BK |
1346 | |
1347 | #ifndef WINDOWSNT | |
1348 | Lisp_Object file; | |
1349 | struct gcpro gcpro1, gcpro2; | |
f60ae425 BK |
1350 | Lisp_Object args[2]; |
1351 | #else /* WINDOWSNT */ | |
06c3eeed JB |
1352 | int len = 0; |
1353 | Lisp_Object lo_file = {0}; | |
1354 | char * psz_file = NULL; | |
1355 | unsigned long ui_volume_tmp = UINT_MAX; | |
1356 | unsigned long ui_volume = UINT_MAX; | |
1357 | int i_result = 0; | |
f60ae425 BK |
1358 | #endif /* WINDOWSNT */ |
1359 | ||
1360 | /* Parse the sound specification. Give up if it is invalid. */ | |
1361 | if (!parse_sound (sound, attrs)) | |
1362 | error ("Invalid sound specification"); | |
1363 | ||
1364 | #ifndef WINDOWSNT | |
1365 | file = Qnil; | |
1366 | GCPRO2 (sound, file); | |
8e6ec322 | 1367 | current_sound_device = (struct sound_device *) xmalloc (sizeof (struct sound_device)); |
72af86bd | 1368 | memset (current_sound_device, 0, sizeof (struct sound_device)); |
8e6ec322 | 1369 | current_sound = (struct sound *) xmalloc (sizeof (struct sound)); |
72af86bd | 1370 | memset (current_sound, 0, sizeof (struct sound)); |
f60ae425 | 1371 | record_unwind_protect (sound_cleanup, Qnil); |
8e6ec322 | 1372 | current_sound->header = (char *) alloca (MAX_SOUND_HEADER_BYTES); |
f60ae425 BK |
1373 | |
1374 | if (STRINGP (attrs[SOUND_FILE])) | |
1375 | { | |
1376 | /* Open the sound file. */ | |
8e6ec322 RS |
1377 | current_sound->fd = openp (Fcons (Vdata_directory, Qnil), |
1378 | attrs[SOUND_FILE], Qnil, &file, Qnil); | |
1379 | if (current_sound->fd < 0) | |
f60ae425 BK |
1380 | sound_perror ("Could not open sound file"); |
1381 | ||
1382 | /* Read the first bytes from the file. */ | |
8e6ec322 RS |
1383 | current_sound->header_size |
1384 | = emacs_read (current_sound->fd, current_sound->header, | |
1385 | MAX_SOUND_HEADER_BYTES); | |
1386 | if (current_sound->header_size < 0) | |
f60ae425 BK |
1387 | sound_perror ("Invalid sound file header"); |
1388 | } | |
1389 | else | |
1390 | { | |
8e6ec322 RS |
1391 | current_sound->data = attrs[SOUND_DATA]; |
1392 | current_sound->header_size = min (MAX_SOUND_HEADER_BYTES, SBYTES (current_sound->data)); | |
72af86bd AS |
1393 | memcpy (current_sound->header, SDATA (current_sound->data), |
1394 | current_sound->header_size); | |
f60ae425 BK |
1395 | } |
1396 | ||
1397 | /* Find out the type of sound. Give up if we can't tell. */ | |
8e6ec322 | 1398 | find_sound_type (current_sound); |
f60ae425 BK |
1399 | |
1400 | /* Set up a device. */ | |
1401 | if (STRINGP (attrs[SOUND_DEVICE])) | |
1402 | { | |
1403 | int len = SCHARS (attrs[SOUND_DEVICE]); | |
8e6ec322 | 1404 | current_sound_device->file = (char *) alloca (len + 1); |
50060332 | 1405 | strcpy (current_sound_device->file, SSDATA (attrs[SOUND_DEVICE])); |
f60ae425 BK |
1406 | } |
1407 | ||
1408 | if (INTEGERP (attrs[SOUND_VOLUME])) | |
8e6ec322 | 1409 | current_sound_device->volume = XFASTINT (attrs[SOUND_VOLUME]); |
f60ae425 | 1410 | else if (FLOATP (attrs[SOUND_VOLUME])) |
8e6ec322 | 1411 | current_sound_device->volume = XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; |
7840ced1 | 1412 | |
f60ae425 BK |
1413 | args[0] = Qplay_sound_functions; |
1414 | args[1] = sound; | |
1415 | Frun_hook_with_args (2, args); | |
1416 | ||
2d2643f6 JD |
1417 | #ifdef HAVE_ALSA |
1418 | if (!alsa_init (current_sound_device)) | |
1419 | #endif | |
1420 | if (!vox_init (current_sound_device)) | |
1421 | error ("No usable sound device driver found"); | |
f60ae425 BK |
1422 | |
1423 | /* Open the device. */ | |
8e6ec322 | 1424 | current_sound_device->open (current_sound_device); |
f60ae425 BK |
1425 | |
1426 | /* Play the sound. */ | |
8e6ec322 | 1427 | current_sound->play (current_sound, current_sound_device); |
f60ae425 BK |
1428 | |
1429 | /* Clean up. */ | |
f60ae425 | 1430 | UNGCPRO; |
06c3eeed | 1431 | |
f60ae425 | 1432 | #else /* WINDOWSNT */ |
06c3eeed JB |
1433 | |
1434 | lo_file = Fexpand_file_name (attrs[SOUND_FILE], Qnil); | |
1435 | len = XSTRING (lo_file)->size; | |
1436 | psz_file = (char *) alloca (len + 1); | |
f60ae425 BK |
1437 | strcpy (psz_file, XSTRING (lo_file)->data); |
1438 | if (INTEGERP (attrs[SOUND_VOLUME])) | |
1439 | { | |
06c3eeed | 1440 | ui_volume_tmp = XFASTINT (attrs[SOUND_VOLUME]); |
f60ae425 BK |
1441 | } |
1442 | else if (FLOATP (attrs[SOUND_VOLUME])) | |
1443 | { | |
96f53c6c | 1444 | ui_volume_tmp = XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; |
f60ae425 BK |
1445 | } |
1446 | /* | |
1447 | Based on some experiments I have conducted, a value of 100 or less | |
1448 | for the sound volume is much too low. You cannot even hear it. | |
1449 | A value of UINT_MAX indicates that you wish for the sound to played | |
1450 | at the maximum possible volume. A value of UINT_MAX/2 plays the | |
1451 | sound at 50% maximum volume. Therefore the value passed to do_play_sound | |
06c3eeed | 1452 | (and thus to waveOutSetVolume) must be some fraction of UINT_MAX. |
f60ae425 | 1453 | The following code adjusts the user specified volume level appropriately. |
06c3eeed | 1454 | */ |
f60ae425 BK |
1455 | if ((ui_volume_tmp > 0) && (ui_volume_tmp <= 100)) |
1456 | { | |
06c3eeed | 1457 | ui_volume = ui_volume_tmp * (UINT_MAX / 100); |
f60ae425 | 1458 | } |
06c3eeed JB |
1459 | i_result = do_play_sound (psz_file, ui_volume); |
1460 | ||
f60ae425 | 1461 | #endif /* WINDOWSNT */ |
06c3eeed | 1462 | |
f60ae425 BK |
1463 | unbind_to (count, Qnil); |
1464 | return Qnil; | |
1465 | } | |
7840ced1 GM |
1466 | \f |
1467 | /*********************************************************************** | |
1468 | Initialization | |
1469 | ***********************************************************************/ | |
1470 | ||
1471 | void | |
971de7fb | 1472 | syms_of_sound (void) |
7840ced1 | 1473 | { |
cd3520a4 JB |
1474 | DEFSYM (QCdevice, ":device"); |
1475 | DEFSYM (QCvolume, ":volume"); | |
1476 | DEFSYM (Qsound, "sound"); | |
1477 | DEFSYM (Qplay_sound_functions, "play-sound-functions"); | |
7840ced1 | 1478 | |
14e415e7 | 1479 | defsubr (&Splay_sound_internal); |
7840ced1 GM |
1480 | } |
1481 | ||
1482 | ||
1483 | void | |
971de7fb | 1484 | init_sound (void) |
7840ced1 GM |
1485 | { |
1486 | } | |
1487 | ||
1488 | #endif /* HAVE_SOUND */ |