| 1 | /* sound.c -- sound support. |
| 2 | Copyright (C) 1998-1999, 2001-2011 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GNU Emacs. |
| 5 | |
| 6 | GNU Emacs is free software: you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation, either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | GNU Emacs is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 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 | |
| 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 |
| 34 | waveOutSetVolume which are exported by Winmm.dll. |
| 35 | */ |
| 36 | |
| 37 | #include <config.h> |
| 38 | |
| 39 | #if defined HAVE_SOUND |
| 40 | |
| 41 | /* BEGIN: Common Includes */ |
| 42 | #include <fcntl.h> |
| 43 | #include <unistd.h> |
| 44 | #include <sys/types.h> |
| 45 | #include <errno.h> |
| 46 | #include <setjmp.h> |
| 47 | #include "lisp.h" |
| 48 | #include "dispextern.h" |
| 49 | #include "atimer.h" |
| 50 | #include <signal.h> |
| 51 | #include "syssignal.h" |
| 52 | /* END: Common Includes */ |
| 53 | |
| 54 | |
| 55 | /* BEGIN: Non Windows Includes */ |
| 56 | #ifndef WINDOWSNT |
| 57 | |
| 58 | #include <sys/ioctl.h> |
| 59 | |
| 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 |
| 69 | #ifdef HAVE_SOUNDCARD_H |
| 70 | #include <soundcard.h> |
| 71 | #endif |
| 72 | #ifdef HAVE_ALSA |
| 73 | #ifdef ALSA_SUBDIR_INCLUDE |
| 74 | #include <alsa/asoundlib.h> |
| 75 | #else |
| 76 | #include <asoundlib.h> |
| 77 | #endif /* ALSA_SUBDIR_INCLUDE */ |
| 78 | #endif /* HAVE_ALSA */ |
| 79 | |
| 80 | /* END: Non Windows Includes */ |
| 81 | |
| 82 | #else /* WINDOWSNT */ |
| 83 | |
| 84 | /* BEGIN: Windows Specific Includes */ |
| 85 | #include <stdio.h> |
| 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 */ |
| 94 | |
| 95 | /* Symbols. */ |
| 96 | |
| 97 | static Lisp_Object QCvolume, QCdevice; |
| 98 | static Lisp_Object Qsound; |
| 99 | static Lisp_Object Qplay_sound_functions; |
| 100 | |
| 101 | /* Indices of attributes in a sound attributes vector. */ |
| 102 | |
| 103 | enum sound_attr |
| 104 | { |
| 105 | SOUND_FILE, |
| 106 | SOUND_DATA, |
| 107 | SOUND_DEVICE, |
| 108 | SOUND_VOLUME, |
| 109 | SOUND_ATTR_SENTINEL |
| 110 | }; |
| 111 | |
| 112 | #ifdef HAVE_ALSA |
| 113 | static void alsa_sound_perror (const char *, int) NO_RETURN; |
| 114 | #endif |
| 115 | static void sound_perror (const char *) NO_RETURN; |
| 116 | static void sound_warning (const char *); |
| 117 | static int parse_sound (Lisp_Object, Lisp_Object *); |
| 118 | |
| 119 | /* END: Common Definitions */ |
| 120 | |
| 121 | /* BEGIN: Non Windows Definitions */ |
| 122 | #ifndef WINDOWSNT |
| 123 | |
| 124 | #ifndef DEFAULT_SOUND_DEVICE |
| 125 | #define DEFAULT_SOUND_DEVICE "/dev/dsp" |
| 126 | #endif |
| 127 | #ifndef DEFAULT_ALSA_SOUND_DEVICE |
| 128 | #define DEFAULT_ALSA_SOUND_DEVICE "default" |
| 129 | #endif |
| 130 | |
| 131 | |
| 132 | /* Structure forward declarations. */ |
| 133 | |
| 134 | struct sound; |
| 135 | struct sound_device; |
| 136 | |
| 137 | /* The file header of RIFF-WAVE files (*.wav). Files are always in |
| 138 | little-endian byte-order. */ |
| 139 | |
| 140 | struct wav_header |
| 141 | { |
| 142 | u_int32_t magic; |
| 143 | u_int32_t length; |
| 144 | u_int32_t chunk_type; |
| 145 | u_int32_t chunk_format; |
| 146 | u_int32_t chunk_length; |
| 147 | u_int16_t format; |
| 148 | u_int16_t channels; |
| 149 | u_int32_t sample_rate; |
| 150 | u_int32_t bytes_per_second; |
| 151 | u_int16_t sample_size; |
| 152 | u_int16_t precision; |
| 153 | u_int32_t chunk_data; |
| 154 | u_int32_t data_length; |
| 155 | }; |
| 156 | |
| 157 | /* The file header of Sun adio files (*.au). Files are always in |
| 158 | big-endian byte-order. */ |
| 159 | |
| 160 | struct au_header |
| 161 | { |
| 162 | /* ASCII ".snd" */ |
| 163 | u_int32_t magic_number; |
| 164 | |
| 165 | /* Offset of data part from start of file. Minimum value is 24. */ |
| 166 | u_int32_t data_offset; |
| 167 | |
| 168 | /* Size of data part, 0xffffffff if unknown. */ |
| 169 | u_int32_t data_size; |
| 170 | |
| 171 | /* Data encoding format. |
| 172 | 1 8-bit ISDN u-law |
| 173 | 2 8-bit linear PCM (REF-PCM) |
| 174 | 3 16-bit linear PCM |
| 175 | 4 24-bit linear PCM |
| 176 | 5 32-bit linear PCM |
| 177 | 6 32-bit IEEE floating-point |
| 178 | 7 64-bit IEEE floating-point |
| 179 | 23 8-bit u-law compressed using CCITT 0.721 ADPCM voice data |
| 180 | encoding scheme. */ |
| 181 | u_int32_t encoding; |
| 182 | |
| 183 | /* Number of samples per second. */ |
| 184 | u_int32_t sample_rate; |
| 185 | |
| 186 | /* Number of interleaved channels. */ |
| 187 | u_int32_t channels; |
| 188 | }; |
| 189 | |
| 190 | /* Maximum of all sound file headers sizes. */ |
| 191 | |
| 192 | #define MAX_SOUND_HEADER_BYTES \ |
| 193 | max (sizeof (struct wav_header), sizeof (struct au_header)) |
| 194 | |
| 195 | /* Interface structure for sound devices. */ |
| 196 | |
| 197 | struct sound_device |
| 198 | { |
| 199 | /* The name of the device or null meaning use a default device name. */ |
| 200 | char *file; |
| 201 | |
| 202 | /* File descriptor of the device. */ |
| 203 | int fd; |
| 204 | |
| 205 | /* Device-dependent format. */ |
| 206 | int format; |
| 207 | |
| 208 | /* Volume (0..100). Zero means unspecified. */ |
| 209 | int volume; |
| 210 | |
| 211 | /* Sample size. */ |
| 212 | int sample_size; |
| 213 | |
| 214 | /* Sample rate. */ |
| 215 | int sample_rate; |
| 216 | |
| 217 | /* Bytes per second. */ |
| 218 | int bps; |
| 219 | |
| 220 | /* 1 = mono, 2 = stereo, 0 = don't set. */ |
| 221 | int channels; |
| 222 | |
| 223 | /* Open device SD. */ |
| 224 | void (* open) (struct sound_device *sd); |
| 225 | |
| 226 | /* Close device SD. */ |
| 227 | void (* close) (struct sound_device *sd); |
| 228 | |
| 229 | /* Configure SD according to device-dependent parameters. */ |
| 230 | void (* configure) (struct sound_device *device); |
| 231 | |
| 232 | /* Choose a device-dependent format for outputting sound S. */ |
| 233 | void (* choose_format) (struct sound_device *sd, |
| 234 | struct sound *s); |
| 235 | |
| 236 | /* Return a preferred data size in bytes to be sent to write (below) |
| 237 | each time. 2048 is used if this is NULL. */ |
| 238 | EMACS_INT (* period_size) (struct sound_device *sd); |
| 239 | |
| 240 | /* Write NYBTES bytes from BUFFER to device SD. */ |
| 241 | void (* write) (struct sound_device *sd, const char *buffer, |
| 242 | EMACS_INT nbytes); |
| 243 | |
| 244 | /* A place for devices to store additional data. */ |
| 245 | void *data; |
| 246 | }; |
| 247 | |
| 248 | /* An enumerator for each supported sound file type. */ |
| 249 | |
| 250 | enum sound_type |
| 251 | { |
| 252 | RIFF, |
| 253 | SUN_AUDIO |
| 254 | }; |
| 255 | |
| 256 | /* Interface structure for sound files. */ |
| 257 | |
| 258 | struct sound |
| 259 | { |
| 260 | /* The type of the file. */ |
| 261 | enum sound_type type; |
| 262 | |
| 263 | /* File descriptor of a sound file. */ |
| 264 | int fd; |
| 265 | |
| 266 | /* Pointer to sound file header. This contains header_size bytes |
| 267 | read from the start of a sound file. */ |
| 268 | char *header; |
| 269 | |
| 270 | /* Number of bytes raed from sound file. This is always <= |
| 271 | MAX_SOUND_HEADER_BYTES. */ |
| 272 | int header_size; |
| 273 | |
| 274 | /* Sound data, if a string. */ |
| 275 | Lisp_Object data; |
| 276 | |
| 277 | /* Play sound file S on device SD. */ |
| 278 | void (* play) (struct sound *s, struct sound_device *sd); |
| 279 | }; |
| 280 | |
| 281 | /* These are set during `play-sound-internal' so that sound_cleanup has |
| 282 | access to them. */ |
| 283 | |
| 284 | static struct sound_device *current_sound_device; |
| 285 | static struct sound *current_sound; |
| 286 | |
| 287 | /* Function prototypes. */ |
| 288 | |
| 289 | static void vox_open (struct sound_device *); |
| 290 | static void vox_configure (struct sound_device *); |
| 291 | static void vox_close (struct sound_device *sd); |
| 292 | static void vox_choose_format (struct sound_device *, struct sound *); |
| 293 | static int vox_init (struct sound_device *); |
| 294 | static void vox_write (struct sound_device *, const char *, EMACS_INT); |
| 295 | static void find_sound_type (struct sound *); |
| 296 | static u_int32_t le2hl (u_int32_t); |
| 297 | static u_int16_t le2hs (u_int16_t); |
| 298 | static u_int32_t be2hl (u_int32_t); |
| 299 | static int wav_init (struct sound *); |
| 300 | static void wav_play (struct sound *, struct sound_device *); |
| 301 | static int au_init (struct sound *); |
| 302 | static void au_play (struct sound *, struct sound_device *); |
| 303 | |
| 304 | #if 0 /* Currently not used. */ |
| 305 | static u_int16_t be2hs (u_int16_t); |
| 306 | #endif |
| 307 | |
| 308 | /* END: Non Windows Definitions */ |
| 309 | #else /* WINDOWSNT */ |
| 310 | |
| 311 | /* BEGIN: Windows Specific Definitions */ |
| 312 | static int do_play_sound (const char *, unsigned long); |
| 313 | /* |
| 314 | END: Windows Specific Definitions */ |
| 315 | #endif /* WINDOWSNT */ |
| 316 | |
| 317 | \f |
| 318 | /*********************************************************************** |
| 319 | General |
| 320 | ***********************************************************************/ |
| 321 | |
| 322 | /* BEGIN: Common functions */ |
| 323 | |
| 324 | /* Like perror, but signals an error. */ |
| 325 | |
| 326 | static void |
| 327 | sound_perror (const char *msg) |
| 328 | { |
| 329 | int saved_errno = errno; |
| 330 | |
| 331 | turn_on_atimers (1); |
| 332 | #ifdef SIGIO |
| 333 | sigunblock (sigmask (SIGIO)); |
| 334 | #endif |
| 335 | if (saved_errno != 0) |
| 336 | error ("%s: %s", msg, strerror (saved_errno)); |
| 337 | else |
| 338 | error ("%s", msg); |
| 339 | } |
| 340 | |
| 341 | |
| 342 | /* Display a warning message. */ |
| 343 | |
| 344 | static void |
| 345 | sound_warning (const char *msg) |
| 346 | { |
| 347 | message ("%s", msg); |
| 348 | } |
| 349 | |
| 350 | |
| 351 | /* Parse sound specification SOUND, and fill ATTRS with what is |
| 352 | found. Value is non-zero if SOUND Is a valid sound specification. |
| 353 | A valid sound specification is a list starting with the symbol |
| 354 | `sound'. The rest of the list is a property list which may |
| 355 | contain the following key/value pairs: |
| 356 | |
| 357 | - `:file FILE' |
| 358 | |
| 359 | FILE is the sound file to play. If it isn't an absolute name, |
| 360 | it's searched under `data-directory'. |
| 361 | |
| 362 | - `:data DATA' |
| 363 | |
| 364 | DATA is a string containing sound data. Either :file or :data |
| 365 | may be present, but not both. |
| 366 | |
| 367 | - `:device DEVICE' |
| 368 | |
| 369 | DEVICE is the name of the device to play on, e.g. "/dev/dsp2". |
| 370 | If not specified, a default device is used. |
| 371 | |
| 372 | - `:volume VOL' |
| 373 | |
| 374 | VOL must be an integer in the range [0, 100], or a float in the |
| 375 | range [0, 1]. */ |
| 376 | |
| 377 | static int |
| 378 | parse_sound (Lisp_Object sound, Lisp_Object *attrs) |
| 379 | { |
| 380 | /* SOUND must be a list starting with the symbol `sound'. */ |
| 381 | if (!CONSP (sound) || !EQ (XCAR (sound), Qsound)) |
| 382 | return 0; |
| 383 | |
| 384 | sound = XCDR (sound); |
| 385 | attrs[SOUND_FILE] = Fplist_get (sound, QCfile); |
| 386 | attrs[SOUND_DATA] = Fplist_get (sound, QCdata); |
| 387 | attrs[SOUND_DEVICE] = Fplist_get (sound, QCdevice); |
| 388 | attrs[SOUND_VOLUME] = Fplist_get (sound, QCvolume); |
| 389 | |
| 390 | #ifndef WINDOWSNT |
| 391 | /* File name or data must be specified. */ |
| 392 | if (!STRINGP (attrs[SOUND_FILE]) |
| 393 | && !STRINGP (attrs[SOUND_DATA])) |
| 394 | return 0; |
| 395 | #else /* WINDOWSNT */ |
| 396 | /* |
| 397 | Data is not supported in Windows. Therefore a |
| 398 | File name MUST be supplied. |
| 399 | */ |
| 400 | if (!STRINGP (attrs[SOUND_FILE])) |
| 401 | { |
| 402 | return 0; |
| 403 | } |
| 404 | #endif /* WINDOWSNT */ |
| 405 | |
| 406 | /* Volume must be in the range 0..100 or unspecified. */ |
| 407 | if (!NILP (attrs[SOUND_VOLUME])) |
| 408 | { |
| 409 | if (INTEGERP (attrs[SOUND_VOLUME])) |
| 410 | { |
| 411 | if (XINT (attrs[SOUND_VOLUME]) < 0 |
| 412 | || XINT (attrs[SOUND_VOLUME]) > 100) |
| 413 | return 0; |
| 414 | } |
| 415 | else if (FLOATP (attrs[SOUND_VOLUME])) |
| 416 | { |
| 417 | if (XFLOAT_DATA (attrs[SOUND_VOLUME]) < 0 |
| 418 | || XFLOAT_DATA (attrs[SOUND_VOLUME]) > 1) |
| 419 | return 0; |
| 420 | } |
| 421 | else |
| 422 | return 0; |
| 423 | } |
| 424 | |
| 425 | #ifndef WINDOWSNT |
| 426 | /* Device must be a string or unspecified. */ |
| 427 | if (!NILP (attrs[SOUND_DEVICE]) |
| 428 | && !STRINGP (attrs[SOUND_DEVICE])) |
| 429 | return 0; |
| 430 | #endif /* WINDOWSNT */ |
| 431 | /* |
| 432 | Since device is ignored in Windows, it does not matter |
| 433 | what it is. |
| 434 | */ |
| 435 | return 1; |
| 436 | } |
| 437 | |
| 438 | /* END: Common functions */ |
| 439 | |
| 440 | /* BEGIN: Non Windows functions */ |
| 441 | #ifndef WINDOWSNT |
| 442 | |
| 443 | /* Find out the type of the sound file whose file descriptor is FD. |
| 444 | S is the sound file structure to fill in. */ |
| 445 | |
| 446 | static void |
| 447 | find_sound_type (struct sound *s) |
| 448 | { |
| 449 | if (!wav_init (s) && !au_init (s)) |
| 450 | error ("Unknown sound format"); |
| 451 | } |
| 452 | |
| 453 | |
| 454 | /* Function installed by play-sound-internal with record_unwind_protect. */ |
| 455 | |
| 456 | static Lisp_Object |
| 457 | sound_cleanup (Lisp_Object arg) |
| 458 | { |
| 459 | if (current_sound_device->close) |
| 460 | current_sound_device->close (current_sound_device); |
| 461 | if (current_sound->fd > 0) |
| 462 | emacs_close (current_sound->fd); |
| 463 | xfree (current_sound_device); |
| 464 | xfree (current_sound); |
| 465 | |
| 466 | return Qnil; |
| 467 | } |
| 468 | |
| 469 | /*********************************************************************** |
| 470 | Byte-order Conversion |
| 471 | ***********************************************************************/ |
| 472 | |
| 473 | /* Convert 32-bit value VALUE which is in little-endian byte-order |
| 474 | to host byte-order. */ |
| 475 | |
| 476 | static u_int32_t |
| 477 | le2hl (u_int32_t value) |
| 478 | { |
| 479 | #ifdef WORDS_BIGENDIAN |
| 480 | unsigned char *p = (unsigned char *) &value; |
| 481 | value = p[0] + (p[1] << 8) + (p[2] << 16) + (p[3] << 24); |
| 482 | #endif |
| 483 | return value; |
| 484 | } |
| 485 | |
| 486 | |
| 487 | /* Convert 16-bit value VALUE which is in little-endian byte-order |
| 488 | to host byte-order. */ |
| 489 | |
| 490 | static u_int16_t |
| 491 | le2hs (u_int16_t value) |
| 492 | { |
| 493 | #ifdef WORDS_BIGENDIAN |
| 494 | unsigned char *p = (unsigned char *) &value; |
| 495 | value = p[0] + (p[1] << 8); |
| 496 | #endif |
| 497 | return value; |
| 498 | } |
| 499 | |
| 500 | |
| 501 | /* Convert 32-bit value VALUE which is in big-endian byte-order |
| 502 | to host byte-order. */ |
| 503 | |
| 504 | static u_int32_t |
| 505 | be2hl (u_int32_t value) |
| 506 | { |
| 507 | #ifndef WORDS_BIGENDIAN |
| 508 | unsigned char *p = (unsigned char *) &value; |
| 509 | value = p[3] + (p[2] << 8) + (p[1] << 16) + (p[0] << 24); |
| 510 | #endif |
| 511 | return value; |
| 512 | } |
| 513 | |
| 514 | |
| 515 | #if 0 /* Currently not used. */ |
| 516 | |
| 517 | /* Convert 16-bit value VALUE which is in big-endian byte-order |
| 518 | to host byte-order. */ |
| 519 | |
| 520 | static u_int16_t |
| 521 | be2hs (u_int16_t value) |
| 522 | { |
| 523 | #ifndef WORDS_BIGENDIAN |
| 524 | unsigned char *p = (unsigned char *) &value; |
| 525 | value = p[1] + (p[0] << 8); |
| 526 | #endif |
| 527 | return value; |
| 528 | } |
| 529 | |
| 530 | #endif /* 0 */ |
| 531 | |
| 532 | /*********************************************************************** |
| 533 | RIFF-WAVE (*.wav) |
| 534 | ***********************************************************************/ |
| 535 | |
| 536 | /* Try to initialize sound file S from S->header. S->header |
| 537 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
| 538 | sound file. If the file is a WAV-format file, set up interface |
| 539 | functions in S and convert header fields to host byte-order. |
| 540 | Value is non-zero if the file is a WAV file. */ |
| 541 | |
| 542 | static int |
| 543 | wav_init (struct sound *s) |
| 544 | { |
| 545 | struct wav_header *header = (struct wav_header *) s->header; |
| 546 | |
| 547 | if (s->header_size < sizeof *header |
| 548 | || memcmp (s->header, "RIFF", 4) != 0) |
| 549 | return 0; |
| 550 | |
| 551 | /* WAV files are in little-endian order. Convert the header |
| 552 | if on a big-endian machine. */ |
| 553 | header->magic = le2hl (header->magic); |
| 554 | header->length = le2hl (header->length); |
| 555 | header->chunk_type = le2hl (header->chunk_type); |
| 556 | header->chunk_format = le2hl (header->chunk_format); |
| 557 | header->chunk_length = le2hl (header->chunk_length); |
| 558 | header->format = le2hs (header->format); |
| 559 | header->channels = le2hs (header->channels); |
| 560 | header->sample_rate = le2hl (header->sample_rate); |
| 561 | header->bytes_per_second = le2hl (header->bytes_per_second); |
| 562 | header->sample_size = le2hs (header->sample_size); |
| 563 | header->precision = le2hs (header->precision); |
| 564 | header->chunk_data = le2hl (header->chunk_data); |
| 565 | header->data_length = le2hl (header->data_length); |
| 566 | |
| 567 | /* Set up the interface functions for WAV. */ |
| 568 | s->type = RIFF; |
| 569 | s->play = wav_play; |
| 570 | |
| 571 | return 1; |
| 572 | } |
| 573 | |
| 574 | |
| 575 | /* Play RIFF-WAVE audio file S on sound device SD. */ |
| 576 | |
| 577 | static void |
| 578 | wav_play (struct sound *s, struct sound_device *sd) |
| 579 | { |
| 580 | struct wav_header *header = (struct wav_header *) s->header; |
| 581 | |
| 582 | /* Let the device choose a suitable device-dependent format |
| 583 | for the file. */ |
| 584 | sd->choose_format (sd, s); |
| 585 | |
| 586 | /* Configure the device. */ |
| 587 | sd->sample_size = header->sample_size; |
| 588 | sd->sample_rate = header->sample_rate; |
| 589 | sd->bps = header->bytes_per_second; |
| 590 | sd->channels = header->channels; |
| 591 | sd->configure (sd); |
| 592 | |
| 593 | /* Copy sound data to the device. The WAV file specification is |
| 594 | actually more complex. This simple scheme worked with all WAV |
| 595 | files I found so far. If someone feels inclined to implement the |
| 596 | whole RIFF-WAVE spec, please do. */ |
| 597 | if (STRINGP (s->data)) |
| 598 | sd->write (sd, SSDATA (s->data) + sizeof *header, |
| 599 | SBYTES (s->data) - sizeof *header); |
| 600 | else |
| 601 | { |
| 602 | char *buffer; |
| 603 | EMACS_INT nbytes = 0; |
| 604 | EMACS_INT blksize = sd->period_size ? sd->period_size (sd) : 2048; |
| 605 | EMACS_INT data_left = header->data_length; |
| 606 | |
| 607 | buffer = (char *) alloca (blksize); |
| 608 | lseek (s->fd, sizeof *header, SEEK_SET); |
| 609 | while (data_left > 0 |
| 610 | && (nbytes = emacs_read (s->fd, buffer, blksize)) > 0) |
| 611 | { |
| 612 | /* Don't play possible garbage at the end of file */ |
| 613 | if (data_left < nbytes) nbytes = data_left; |
| 614 | data_left -= nbytes; |
| 615 | sd->write (sd, buffer, nbytes); |
| 616 | } |
| 617 | |
| 618 | if (nbytes < 0) |
| 619 | sound_perror ("Error reading sound file"); |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | |
| 624 | /*********************************************************************** |
| 625 | Sun Audio (*.au) |
| 626 | ***********************************************************************/ |
| 627 | |
| 628 | /* Sun audio file encodings. */ |
| 629 | |
| 630 | enum au_encoding |
| 631 | { |
| 632 | AU_ENCODING_ULAW_8 = 1, |
| 633 | AU_ENCODING_8, |
| 634 | AU_ENCODING_16, |
| 635 | AU_ENCODING_24, |
| 636 | AU_ENCODING_32, |
| 637 | AU_ENCODING_IEEE32, |
| 638 | AU_ENCODING_IEEE64, |
| 639 | AU_COMPRESSED = 23, |
| 640 | AU_ENCODING_ALAW_8 = 27 |
| 641 | }; |
| 642 | |
| 643 | |
| 644 | /* Try to initialize sound file S from S->header. S->header |
| 645 | contains the first MAX_SOUND_HEADER_BYTES number of bytes from the |
| 646 | sound file. If the file is a AU-format file, set up interface |
| 647 | functions in S and convert header fields to host byte-order. |
| 648 | Value is non-zero if the file is an AU file. */ |
| 649 | |
| 650 | static int |
| 651 | au_init (struct sound *s) |
| 652 | { |
| 653 | struct au_header *header = (struct au_header *) s->header; |
| 654 | |
| 655 | if (s->header_size < sizeof *header |
| 656 | || memcmp (s->header, ".snd", 4) != 0) |
| 657 | return 0; |
| 658 | |
| 659 | header->magic_number = be2hl (header->magic_number); |
| 660 | header->data_offset = be2hl (header->data_offset); |
| 661 | header->data_size = be2hl (header->data_size); |
| 662 | header->encoding = be2hl (header->encoding); |
| 663 | header->sample_rate = be2hl (header->sample_rate); |
| 664 | header->channels = be2hl (header->channels); |
| 665 | |
| 666 | /* Set up the interface functions for AU. */ |
| 667 | s->type = SUN_AUDIO; |
| 668 | s->play = au_play; |
| 669 | |
| 670 | return 1; |
| 671 | } |
| 672 | |
| 673 | |
| 674 | /* Play Sun audio file S on sound device SD. */ |
| 675 | |
| 676 | static void |
| 677 | au_play (struct sound *s, struct sound_device *sd) |
| 678 | { |
| 679 | struct au_header *header = (struct au_header *) s->header; |
| 680 | |
| 681 | sd->sample_size = 0; |
| 682 | sd->sample_rate = header->sample_rate; |
| 683 | sd->bps = 0; |
| 684 | sd->channels = header->channels; |
| 685 | sd->choose_format (sd, s); |
| 686 | sd->configure (sd); |
| 687 | |
| 688 | if (STRINGP (s->data)) |
| 689 | sd->write (sd, SSDATA (s->data) + header->data_offset, |
| 690 | SBYTES (s->data) - header->data_offset); |
| 691 | else |
| 692 | { |
| 693 | EMACS_INT blksize = sd->period_size ? sd->period_size (sd) : 2048; |
| 694 | char *buffer; |
| 695 | EMACS_INT nbytes; |
| 696 | |
| 697 | /* Seek */ |
| 698 | lseek (s->fd, header->data_offset, SEEK_SET); |
| 699 | |
| 700 | /* Copy sound data to the device. */ |
| 701 | buffer = (char *) alloca (blksize); |
| 702 | while ((nbytes = emacs_read (s->fd, buffer, blksize)) > 0) |
| 703 | sd->write (sd, buffer, nbytes); |
| 704 | |
| 705 | if (nbytes < 0) |
| 706 | sound_perror ("Error reading sound file"); |
| 707 | } |
| 708 | } |
| 709 | |
| 710 | |
| 711 | /*********************************************************************** |
| 712 | Voxware Driver Interface |
| 713 | ***********************************************************************/ |
| 714 | |
| 715 | /* This driver is available on GNU/Linux, and the free BSDs. FreeBSD |
| 716 | has a compatible own driver aka Luigi's driver. */ |
| 717 | |
| 718 | |
| 719 | /* Open device SD. If SD->file is non-null, open that device, |
| 720 | otherwise use a default device name. */ |
| 721 | |
| 722 | static void |
| 723 | vox_open (struct sound_device *sd) |
| 724 | { |
| 725 | const char *file; |
| 726 | |
| 727 | /* Open the sound device. Default is /dev/dsp. */ |
| 728 | if (sd->file) |
| 729 | file = sd->file; |
| 730 | else |
| 731 | file = DEFAULT_SOUND_DEVICE; |
| 732 | |
| 733 | sd->fd = emacs_open (file, O_WRONLY, 0); |
| 734 | if (sd->fd < 0) |
| 735 | sound_perror (file); |
| 736 | } |
| 737 | |
| 738 | |
| 739 | /* Configure device SD from parameters in it. */ |
| 740 | |
| 741 | static void |
| 742 | vox_configure (struct sound_device *sd) |
| 743 | { |
| 744 | int val; |
| 745 | |
| 746 | xassert (sd->fd >= 0); |
| 747 | |
| 748 | /* On GNU/Linux, it seems that the device driver doesn't like to be |
| 749 | interrupted by a signal. Block the ones we know to cause |
| 750 | troubles. */ |
| 751 | turn_on_atimers (0); |
| 752 | #ifdef SIGIO |
| 753 | sigblock (sigmask (SIGIO)); |
| 754 | #endif |
| 755 | |
| 756 | val = sd->format; |
| 757 | if (ioctl (sd->fd, SNDCTL_DSP_SETFMT, &sd->format) < 0 |
| 758 | || val != sd->format) |
| 759 | sound_perror ("Could not set sound format"); |
| 760 | |
| 761 | val = sd->channels != 1; |
| 762 | if (ioctl (sd->fd, SNDCTL_DSP_STEREO, &val) < 0 |
| 763 | || val != (sd->channels != 1)) |
| 764 | sound_perror ("Could not set stereo/mono"); |
| 765 | |
| 766 | /* I think bps and sampling_rate are the same, but who knows. |
| 767 | Check this. and use SND_DSP_SPEED for both. */ |
| 768 | if (sd->sample_rate > 0) |
| 769 | { |
| 770 | val = sd->sample_rate; |
| 771 | if (ioctl (sd->fd, SNDCTL_DSP_SPEED, &sd->sample_rate) < 0) |
| 772 | sound_perror ("Could not set sound speed"); |
| 773 | else if (val != sd->sample_rate) |
| 774 | sound_warning ("Could not set sample rate"); |
| 775 | } |
| 776 | |
| 777 | if (sd->volume > 0) |
| 778 | { |
| 779 | int volume = sd->volume & 0xff; |
| 780 | volume |= volume << 8; |
| 781 | /* This may fail if there is no mixer. Ignore the failure. */ |
| 782 | ioctl (sd->fd, SOUND_MIXER_WRITE_PCM, &volume); |
| 783 | } |
| 784 | |
| 785 | turn_on_atimers (1); |
| 786 | #ifdef SIGIO |
| 787 | sigunblock (sigmask (SIGIO)); |
| 788 | #endif |
| 789 | } |
| 790 | |
| 791 | |
| 792 | /* Close device SD if it is open. */ |
| 793 | |
| 794 | static void |
| 795 | vox_close (struct sound_device *sd) |
| 796 | { |
| 797 | if (sd->fd >= 0) |
| 798 | { |
| 799 | /* On GNU/Linux, it seems that the device driver doesn't like to |
| 800 | be interrupted by a signal. Block the ones we know to cause |
| 801 | troubles. */ |
| 802 | #ifdef SIGIO |
| 803 | sigblock (sigmask (SIGIO)); |
| 804 | #endif |
| 805 | turn_on_atimers (0); |
| 806 | |
| 807 | /* Flush sound data, and reset the device. */ |
| 808 | ioctl (sd->fd, SNDCTL_DSP_SYNC, NULL); |
| 809 | |
| 810 | turn_on_atimers (1); |
| 811 | #ifdef SIGIO |
| 812 | sigunblock (sigmask (SIGIO)); |
| 813 | #endif |
| 814 | |
| 815 | /* Close the device. */ |
| 816 | emacs_close (sd->fd); |
| 817 | sd->fd = -1; |
| 818 | } |
| 819 | } |
| 820 | |
| 821 | |
| 822 | /* Choose device-dependent format for device SD from sound file S. */ |
| 823 | |
| 824 | static void |
| 825 | vox_choose_format (struct sound_device *sd, struct sound *s) |
| 826 | { |
| 827 | if (s->type == RIFF) |
| 828 | { |
| 829 | struct wav_header *h = (struct wav_header *) s->header; |
| 830 | if (h->precision == 8) |
| 831 | sd->format = AFMT_U8; |
| 832 | else if (h->precision == 16) |
| 833 | sd->format = AFMT_S16_LE; |
| 834 | else |
| 835 | error ("Unsupported WAV file format"); |
| 836 | } |
| 837 | else if (s->type == SUN_AUDIO) |
| 838 | { |
| 839 | struct au_header *header = (struct au_header *) s->header; |
| 840 | switch (header->encoding) |
| 841 | { |
| 842 | case AU_ENCODING_ULAW_8: |
| 843 | case AU_ENCODING_IEEE32: |
| 844 | case AU_ENCODING_IEEE64: |
| 845 | sd->format = AFMT_MU_LAW; |
| 846 | break; |
| 847 | |
| 848 | case AU_ENCODING_8: |
| 849 | case AU_ENCODING_16: |
| 850 | case AU_ENCODING_24: |
| 851 | case AU_ENCODING_32: |
| 852 | sd->format = AFMT_S16_LE; |
| 853 | break; |
| 854 | |
| 855 | default: |
| 856 | error ("Unsupported AU file format"); |
| 857 | } |
| 858 | } |
| 859 | else |
| 860 | abort (); |
| 861 | } |
| 862 | |
| 863 | |
| 864 | /* Initialize device SD. Set up the interface functions in the device |
| 865 | structure. */ |
| 866 | |
| 867 | static int |
| 868 | vox_init (struct sound_device *sd) |
| 869 | { |
| 870 | const char *file; |
| 871 | int fd; |
| 872 | |
| 873 | /* Open the sound device. Default is /dev/dsp. */ |
| 874 | if (sd->file) |
| 875 | file = sd->file; |
| 876 | else |
| 877 | file = DEFAULT_SOUND_DEVICE; |
| 878 | fd = emacs_open (file, O_WRONLY, 0); |
| 879 | if (fd >= 0) |
| 880 | emacs_close (fd); |
| 881 | else |
| 882 | return 0; |
| 883 | |
| 884 | sd->fd = -1; |
| 885 | sd->open = vox_open; |
| 886 | sd->close = vox_close; |
| 887 | sd->configure = vox_configure; |
| 888 | sd->choose_format = vox_choose_format; |
| 889 | sd->write = vox_write; |
| 890 | sd->period_size = NULL; |
| 891 | |
| 892 | return 1; |
| 893 | } |
| 894 | |
| 895 | /* Write NBYTES bytes from BUFFER to device SD. */ |
| 896 | |
| 897 | static void |
| 898 | vox_write (struct sound_device *sd, const char *buffer, EMACS_INT nbytes) |
| 899 | { |
| 900 | if (emacs_write (sd->fd, buffer, nbytes) != nbytes) |
| 901 | sound_perror ("Error writing to sound device"); |
| 902 | } |
| 903 | |
| 904 | #ifdef HAVE_ALSA |
| 905 | /*********************************************************************** |
| 906 | ALSA Driver Interface |
| 907 | ***********************************************************************/ |
| 908 | |
| 909 | /* This driver is available on GNU/Linux. */ |
| 910 | |
| 911 | static void |
| 912 | alsa_sound_perror (const char *msg, int err) |
| 913 | { |
| 914 | error ("%s: %s", msg, snd_strerror (err)); |
| 915 | } |
| 916 | |
| 917 | struct alsa_params |
| 918 | { |
| 919 | snd_pcm_t *handle; |
| 920 | snd_pcm_hw_params_t *hwparams; |
| 921 | snd_pcm_sw_params_t *swparams; |
| 922 | snd_pcm_uframes_t period_size; |
| 923 | }; |
| 924 | |
| 925 | /* Open device SD. If SD->file is non-null, open that device, |
| 926 | otherwise use a default device name. */ |
| 927 | |
| 928 | static void |
| 929 | alsa_open (struct sound_device *sd) |
| 930 | { |
| 931 | const char *file; |
| 932 | struct alsa_params *p; |
| 933 | int err; |
| 934 | |
| 935 | /* Open the sound device. Default is "default". */ |
| 936 | if (sd->file) |
| 937 | file = sd->file; |
| 938 | else |
| 939 | file = DEFAULT_ALSA_SOUND_DEVICE; |
| 940 | |
| 941 | p = xmalloc (sizeof (*p)); |
| 942 | p->handle = NULL; |
| 943 | p->hwparams = NULL; |
| 944 | p->swparams = NULL; |
| 945 | |
| 946 | sd->fd = -1; |
| 947 | sd->data = p; |
| 948 | |
| 949 | |
| 950 | err = snd_pcm_open (&p->handle, file, SND_PCM_STREAM_PLAYBACK, 0); |
| 951 | if (err < 0) |
| 952 | alsa_sound_perror (file, err); |
| 953 | } |
| 954 | |
| 955 | static EMACS_INT |
| 956 | alsa_period_size (struct sound_device *sd) |
| 957 | { |
| 958 | struct alsa_params *p = (struct alsa_params *) sd->data; |
| 959 | int fact = snd_pcm_format_size (sd->format, 1) * sd->channels; |
| 960 | return p->period_size * (fact > 0 ? fact : 1); |
| 961 | } |
| 962 | |
| 963 | static void |
| 964 | alsa_configure (struct sound_device *sd) |
| 965 | { |
| 966 | int val, err, dir; |
| 967 | unsigned uval; |
| 968 | struct alsa_params *p = (struct alsa_params *) sd->data; |
| 969 | snd_pcm_uframes_t buffer_size; |
| 970 | |
| 971 | xassert (p->handle != 0); |
| 972 | |
| 973 | err = snd_pcm_hw_params_malloc (&p->hwparams); |
| 974 | if (err < 0) |
| 975 | alsa_sound_perror ("Could not allocate hardware parameter structure", err); |
| 976 | |
| 977 | err = snd_pcm_sw_params_malloc (&p->swparams); |
| 978 | if (err < 0) |
| 979 | alsa_sound_perror ("Could not allocate software parameter structure", err); |
| 980 | |
| 981 | err = snd_pcm_hw_params_any (p->handle, p->hwparams); |
| 982 | if (err < 0) |
| 983 | alsa_sound_perror ("Could not initialize hardware parameter structure", err); |
| 984 | |
| 985 | err = snd_pcm_hw_params_set_access (p->handle, p->hwparams, |
| 986 | SND_PCM_ACCESS_RW_INTERLEAVED); |
| 987 | if (err < 0) |
| 988 | alsa_sound_perror ("Could not set access type", err); |
| 989 | |
| 990 | val = sd->format; |
| 991 | err = snd_pcm_hw_params_set_format (p->handle, p->hwparams, val); |
| 992 | if (err < 0) |
| 993 | alsa_sound_perror ("Could not set sound format", err); |
| 994 | |
| 995 | uval = sd->sample_rate; |
| 996 | err = snd_pcm_hw_params_set_rate_near (p->handle, p->hwparams, &uval, 0); |
| 997 | if (err < 0) |
| 998 | alsa_sound_perror ("Could not set sample rate", err); |
| 999 | |
| 1000 | val = sd->channels; |
| 1001 | err = snd_pcm_hw_params_set_channels (p->handle, p->hwparams, val); |
| 1002 | if (err < 0) |
| 1003 | alsa_sound_perror ("Could not set channel count", err); |
| 1004 | |
| 1005 | err = snd_pcm_hw_params (p->handle, p->hwparams); |
| 1006 | if (err < 0) |
| 1007 | alsa_sound_perror ("Could not set parameters", err); |
| 1008 | |
| 1009 | |
| 1010 | err = snd_pcm_hw_params_get_period_size (p->hwparams, &p->period_size, &dir); |
| 1011 | if (err < 0) |
| 1012 | alsa_sound_perror ("Unable to get period size for playback", err); |
| 1013 | |
| 1014 | err = snd_pcm_hw_params_get_buffer_size (p->hwparams, &buffer_size); |
| 1015 | if (err < 0) |
| 1016 | alsa_sound_perror ("Unable to get buffer size for playback", err); |
| 1017 | |
| 1018 | err = snd_pcm_sw_params_current (p->handle, p->swparams); |
| 1019 | if (err < 0) |
| 1020 | alsa_sound_perror ("Unable to determine current swparams for playback", |
| 1021 | err); |
| 1022 | |
| 1023 | /* Start the transfer when the buffer is almost full */ |
| 1024 | err = snd_pcm_sw_params_set_start_threshold (p->handle, p->swparams, |
| 1025 | (buffer_size / p->period_size) |
| 1026 | * p->period_size); |
| 1027 | if (err < 0) |
| 1028 | alsa_sound_perror ("Unable to set start threshold mode for playback", err); |
| 1029 | |
| 1030 | /* Allow the transfer when at least period_size samples can be processed */ |
| 1031 | err = snd_pcm_sw_params_set_avail_min (p->handle, p->swparams, p->period_size); |
| 1032 | if (err < 0) |
| 1033 | alsa_sound_perror ("Unable to set avail min for playback", err); |
| 1034 | |
| 1035 | err = snd_pcm_sw_params (p->handle, p->swparams); |
| 1036 | if (err < 0) |
| 1037 | alsa_sound_perror ("Unable to set sw params for playback\n", err); |
| 1038 | |
| 1039 | snd_pcm_hw_params_free (p->hwparams); |
| 1040 | p->hwparams = NULL; |
| 1041 | snd_pcm_sw_params_free (p->swparams); |
| 1042 | p->swparams = NULL; |
| 1043 | |
| 1044 | err = snd_pcm_prepare (p->handle); |
| 1045 | if (err < 0) |
| 1046 | alsa_sound_perror ("Could not prepare audio interface for use", err); |
| 1047 | |
| 1048 | if (sd->volume > 0) |
| 1049 | { |
| 1050 | int chn; |
| 1051 | snd_mixer_t *handle; |
| 1052 | snd_mixer_elem_t *e; |
| 1053 | const char *file = sd->file ? sd->file : DEFAULT_ALSA_SOUND_DEVICE; |
| 1054 | |
| 1055 | if (snd_mixer_open (&handle, 0) >= 0) |
| 1056 | { |
| 1057 | if (snd_mixer_attach (handle, file) >= 0 |
| 1058 | && snd_mixer_load (handle) >= 0 |
| 1059 | && snd_mixer_selem_register (handle, NULL, NULL) >= 0) |
| 1060 | for (e = snd_mixer_first_elem (handle); |
| 1061 | e; |
| 1062 | e = snd_mixer_elem_next (e)) |
| 1063 | { |
| 1064 | if (snd_mixer_selem_has_playback_volume (e)) |
| 1065 | { |
| 1066 | long pmin, pmax, vol; |
| 1067 | snd_mixer_selem_get_playback_volume_range (e, &pmin, &pmax); |
| 1068 | vol = pmin + (sd->volume * (pmax - pmin)) / 100; |
| 1069 | |
| 1070 | for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++) |
| 1071 | snd_mixer_selem_set_playback_volume (e, chn, vol); |
| 1072 | } |
| 1073 | } |
| 1074 | snd_mixer_close (handle); |
| 1075 | } |
| 1076 | } |
| 1077 | } |
| 1078 | |
| 1079 | |
| 1080 | /* Close device SD if it is open. */ |
| 1081 | |
| 1082 | static void |
| 1083 | alsa_close (struct sound_device *sd) |
| 1084 | { |
| 1085 | struct alsa_params *p = (struct alsa_params *) sd->data; |
| 1086 | if (p) |
| 1087 | { |
| 1088 | if (p->hwparams) |
| 1089 | snd_pcm_hw_params_free (p->hwparams); |
| 1090 | if (p->swparams) |
| 1091 | snd_pcm_sw_params_free (p->swparams); |
| 1092 | if (p->handle) |
| 1093 | { |
| 1094 | snd_pcm_drain (p->handle); |
| 1095 | snd_pcm_close (p->handle); |
| 1096 | } |
| 1097 | xfree (p); |
| 1098 | } |
| 1099 | } |
| 1100 | |
| 1101 | /* Choose device-dependent format for device SD from sound file S. */ |
| 1102 | |
| 1103 | static void |
| 1104 | alsa_choose_format (struct sound_device *sd, struct sound *s) |
| 1105 | { |
| 1106 | if (s->type == RIFF) |
| 1107 | { |
| 1108 | struct wav_header *h = (struct wav_header *) s->header; |
| 1109 | if (h->precision == 8) |
| 1110 | sd->format = SND_PCM_FORMAT_U8; |
| 1111 | else if (h->precision == 16) |
| 1112 | sd->format = SND_PCM_FORMAT_S16_LE; |
| 1113 | else |
| 1114 | error ("Unsupported WAV file format"); |
| 1115 | } |
| 1116 | else if (s->type == SUN_AUDIO) |
| 1117 | { |
| 1118 | struct au_header *header = (struct au_header *) s->header; |
| 1119 | switch (header->encoding) |
| 1120 | { |
| 1121 | case AU_ENCODING_ULAW_8: |
| 1122 | sd->format = SND_PCM_FORMAT_MU_LAW; |
| 1123 | break; |
| 1124 | case AU_ENCODING_ALAW_8: |
| 1125 | sd->format = SND_PCM_FORMAT_A_LAW; |
| 1126 | break; |
| 1127 | case AU_ENCODING_IEEE32: |
| 1128 | sd->format = SND_PCM_FORMAT_FLOAT_BE; |
| 1129 | break; |
| 1130 | case AU_ENCODING_IEEE64: |
| 1131 | sd->format = SND_PCM_FORMAT_FLOAT64_BE; |
| 1132 | break; |
| 1133 | case AU_ENCODING_8: |
| 1134 | sd->format = SND_PCM_FORMAT_S8; |
| 1135 | break; |
| 1136 | case AU_ENCODING_16: |
| 1137 | sd->format = SND_PCM_FORMAT_S16_BE; |
| 1138 | break; |
| 1139 | case AU_ENCODING_24: |
| 1140 | sd->format = SND_PCM_FORMAT_S24_BE; |
| 1141 | break; |
| 1142 | case AU_ENCODING_32: |
| 1143 | sd->format = SND_PCM_FORMAT_S32_BE; |
| 1144 | break; |
| 1145 | |
| 1146 | default: |
| 1147 | error ("Unsupported AU file format"); |
| 1148 | } |
| 1149 | } |
| 1150 | else |
| 1151 | abort (); |
| 1152 | } |
| 1153 | |
| 1154 | |
| 1155 | /* Write NBYTES bytes from BUFFER to device SD. */ |
| 1156 | |
| 1157 | static void |
| 1158 | alsa_write (struct sound_device *sd, const char *buffer, EMACS_INT nbytes) |
| 1159 | { |
| 1160 | struct alsa_params *p = (struct alsa_params *) sd->data; |
| 1161 | |
| 1162 | /* The the third parameter to snd_pcm_writei is frames, not bytes. */ |
| 1163 | int fact = snd_pcm_format_size (sd->format, 1) * sd->channels; |
| 1164 | EMACS_INT nwritten = 0; |
| 1165 | int err; |
| 1166 | |
| 1167 | while (nwritten < nbytes) |
| 1168 | { |
| 1169 | snd_pcm_uframes_t frames = (nbytes - nwritten)/fact; |
| 1170 | if (frames == 0) break; |
| 1171 | |
| 1172 | err = snd_pcm_writei (p->handle, buffer + nwritten, frames); |
| 1173 | if (err < 0) |
| 1174 | { |
| 1175 | if (err == -EPIPE) |
| 1176 | { /* under-run */ |
| 1177 | err = snd_pcm_prepare (p->handle); |
| 1178 | if (err < 0) |
| 1179 | alsa_sound_perror ("Can't recover from underrun, prepare failed", |
| 1180 | err); |
| 1181 | } |
| 1182 | else if (err == -ESTRPIPE) |
| 1183 | { |
| 1184 | while ((err = snd_pcm_resume (p->handle)) == -EAGAIN) |
| 1185 | sleep (1); /* wait until the suspend flag is released */ |
| 1186 | if (err < 0) |
| 1187 | { |
| 1188 | err = snd_pcm_prepare (p->handle); |
| 1189 | if (err < 0) |
| 1190 | alsa_sound_perror ("Can't recover from suspend, " |
| 1191 | "prepare failed", |
| 1192 | err); |
| 1193 | } |
| 1194 | } |
| 1195 | else |
| 1196 | alsa_sound_perror ("Error writing to sound device", err); |
| 1197 | |
| 1198 | } |
| 1199 | else |
| 1200 | nwritten += err * fact; |
| 1201 | } |
| 1202 | } |
| 1203 | |
| 1204 | static void |
| 1205 | snd_error_quiet (const char *file, int line, const char *function, int err, |
| 1206 | const char *fmt) |
| 1207 | { |
| 1208 | } |
| 1209 | |
| 1210 | /* Initialize device SD. Set up the interface functions in the device |
| 1211 | structure. */ |
| 1212 | |
| 1213 | static int |
| 1214 | alsa_init (struct sound_device *sd) |
| 1215 | { |
| 1216 | const char *file; |
| 1217 | snd_pcm_t *handle; |
| 1218 | int err; |
| 1219 | |
| 1220 | /* Open the sound device. Default is "default". */ |
| 1221 | if (sd->file) |
| 1222 | file = sd->file; |
| 1223 | else |
| 1224 | file = DEFAULT_ALSA_SOUND_DEVICE; |
| 1225 | |
| 1226 | snd_lib_error_set_handler ((snd_lib_error_handler_t) snd_error_quiet); |
| 1227 | err = snd_pcm_open (&handle, file, SND_PCM_STREAM_PLAYBACK, 0); |
| 1228 | snd_lib_error_set_handler (NULL); |
| 1229 | if (err < 0) |
| 1230 | return 0; |
| 1231 | snd_pcm_close (handle); |
| 1232 | |
| 1233 | sd->fd = -1; |
| 1234 | sd->open = alsa_open; |
| 1235 | sd->close = alsa_close; |
| 1236 | sd->configure = alsa_configure; |
| 1237 | sd->choose_format = alsa_choose_format; |
| 1238 | sd->write = alsa_write; |
| 1239 | sd->period_size = alsa_period_size; |
| 1240 | |
| 1241 | return 1; |
| 1242 | } |
| 1243 | |
| 1244 | #endif /* HAVE_ALSA */ |
| 1245 | |
| 1246 | |
| 1247 | /* END: Non Windows functions */ |
| 1248 | #else /* WINDOWSNT */ |
| 1249 | |
| 1250 | /* BEGIN: Windows specific functions */ |
| 1251 | |
| 1252 | #define SOUND_WARNING(fun, error, text) \ |
| 1253 | { \ |
| 1254 | char buf[1024]; \ |
| 1255 | char err_string[MAXERRORLENGTH]; \ |
| 1256 | fun (error, err_string, sizeof (err_string)); \ |
| 1257 | _snprintf (buf, sizeof (buf), "%s\nError: %s", \ |
| 1258 | text, err_string); \ |
| 1259 | sound_warning (buf); \ |
| 1260 | } |
| 1261 | |
| 1262 | static int |
| 1263 | do_play_sound (const char *psz_file, unsigned long ui_volume) |
| 1264 | { |
| 1265 | int i_result = 0; |
| 1266 | MCIERROR mci_error = 0; |
| 1267 | char sz_cmd_buf[520] = {0}; |
| 1268 | char sz_ret_buf[520] = {0}; |
| 1269 | MMRESULT mm_result = MMSYSERR_NOERROR; |
| 1270 | unsigned long ui_volume_org = 0; |
| 1271 | BOOL b_reset_volume = FALSE; |
| 1272 | |
| 1273 | memset (sz_cmd_buf, 0, sizeof (sz_cmd_buf)); |
| 1274 | memset (sz_ret_buf, 0, sizeof (sz_ret_buf)); |
| 1275 | sprintf (sz_cmd_buf, |
| 1276 | "open \"%s\" alias GNUEmacs_PlaySound_Device wait", |
| 1277 | psz_file); |
| 1278 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, sizeof (sz_ret_buf), NULL); |
| 1279 | if (mci_error != 0) |
| 1280 | { |
| 1281 | SOUND_WARNING (mciGetErrorString, mci_error, |
| 1282 | "The open mciSendString command failed to open " |
| 1283 | "the specified sound file."); |
| 1284 | i_result = (int) mci_error; |
| 1285 | return i_result; |
| 1286 | } |
| 1287 | if ((ui_volume > 0) && (ui_volume != UINT_MAX)) |
| 1288 | { |
| 1289 | mm_result = waveOutGetVolume ((HWAVEOUT) WAVE_MAPPER, &ui_volume_org); |
| 1290 | if (mm_result == MMSYSERR_NOERROR) |
| 1291 | { |
| 1292 | b_reset_volume = TRUE; |
| 1293 | mm_result = waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume); |
| 1294 | if (mm_result != MMSYSERR_NOERROR) |
| 1295 | { |
| 1296 | SOUND_WARNING (waveOutGetErrorText, mm_result, |
| 1297 | "waveOutSetVolume failed to set the volume level " |
| 1298 | "of the WAVE_MAPPER device.\n" |
| 1299 | "As a result, the user selected volume level will " |
| 1300 | "not be used."); |
| 1301 | } |
| 1302 | } |
| 1303 | else |
| 1304 | { |
| 1305 | SOUND_WARNING (waveOutGetErrorText, mm_result, |
| 1306 | "waveOutGetVolume failed to obtain the original " |
| 1307 | "volume level of the WAVE_MAPPER device.\n" |
| 1308 | "As a result, the user selected volume level will " |
| 1309 | "not be used."); |
| 1310 | } |
| 1311 | } |
| 1312 | memset (sz_cmd_buf, 0, sizeof (sz_cmd_buf)); |
| 1313 | memset (sz_ret_buf, 0, sizeof (sz_ret_buf)); |
| 1314 | strcpy (sz_cmd_buf, "play GNUEmacs_PlaySound_Device wait"); |
| 1315 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, sizeof (sz_ret_buf), NULL); |
| 1316 | if (mci_error != 0) |
| 1317 | { |
| 1318 | SOUND_WARNING (mciGetErrorString, mci_error, |
| 1319 | "The play mciSendString command failed to play the " |
| 1320 | "opened sound file."); |
| 1321 | i_result = (int) mci_error; |
| 1322 | } |
| 1323 | memset (sz_cmd_buf, 0, sizeof (sz_cmd_buf)); |
| 1324 | memset (sz_ret_buf, 0, sizeof (sz_ret_buf)); |
| 1325 | strcpy (sz_cmd_buf, "close GNUEmacs_PlaySound_Device wait"); |
| 1326 | mci_error = mciSendString (sz_cmd_buf, sz_ret_buf, sizeof (sz_ret_buf), NULL); |
| 1327 | if (b_reset_volume == TRUE) |
| 1328 | { |
| 1329 | mm_result = waveOutSetVolume ((HWAVEOUT) WAVE_MAPPER, ui_volume_org); |
| 1330 | if (mm_result != MMSYSERR_NOERROR) |
| 1331 | { |
| 1332 | SOUND_WARNING (waveOutGetErrorText, mm_result, |
| 1333 | "waveOutSetVolume failed to reset the original volume " |
| 1334 | "level of the WAVE_MAPPER device."); |
| 1335 | } |
| 1336 | } |
| 1337 | return i_result; |
| 1338 | } |
| 1339 | |
| 1340 | /* END: Windows specific functions */ |
| 1341 | |
| 1342 | #endif /* WINDOWSNT */ |
| 1343 | |
| 1344 | DEFUN ("play-sound-internal", Fplay_sound_internal, Splay_sound_internal, 1, 1, 0, |
| 1345 | doc: /* Play sound SOUND. |
| 1346 | |
| 1347 | Internal use only, use `play-sound' instead. */) |
| 1348 | (Lisp_Object sound) |
| 1349 | { |
| 1350 | Lisp_Object attrs[SOUND_ATTR_SENTINEL]; |
| 1351 | int count = SPECPDL_INDEX (); |
| 1352 | |
| 1353 | #ifndef WINDOWSNT |
| 1354 | Lisp_Object file; |
| 1355 | struct gcpro gcpro1, gcpro2; |
| 1356 | Lisp_Object args[2]; |
| 1357 | #else /* WINDOWSNT */ |
| 1358 | int len = 0; |
| 1359 | Lisp_Object lo_file = {0}; |
| 1360 | char * psz_file = NULL; |
| 1361 | unsigned long ui_volume_tmp = UINT_MAX; |
| 1362 | unsigned long ui_volume = UINT_MAX; |
| 1363 | int i_result = 0; |
| 1364 | #endif /* WINDOWSNT */ |
| 1365 | |
| 1366 | /* Parse the sound specification. Give up if it is invalid. */ |
| 1367 | if (!parse_sound (sound, attrs)) |
| 1368 | error ("Invalid sound specification"); |
| 1369 | |
| 1370 | #ifndef WINDOWSNT |
| 1371 | file = Qnil; |
| 1372 | GCPRO2 (sound, file); |
| 1373 | current_sound_device = (struct sound_device *) xmalloc (sizeof (struct sound_device)); |
| 1374 | memset (current_sound_device, 0, sizeof (struct sound_device)); |
| 1375 | current_sound = (struct sound *) xmalloc (sizeof (struct sound)); |
| 1376 | memset (current_sound, 0, sizeof (struct sound)); |
| 1377 | record_unwind_protect (sound_cleanup, Qnil); |
| 1378 | current_sound->header = (char *) alloca (MAX_SOUND_HEADER_BYTES); |
| 1379 | |
| 1380 | if (STRINGP (attrs[SOUND_FILE])) |
| 1381 | { |
| 1382 | /* Open the sound file. */ |
| 1383 | current_sound->fd = openp (Fcons (Vdata_directory, Qnil), |
| 1384 | attrs[SOUND_FILE], Qnil, &file, Qnil); |
| 1385 | if (current_sound->fd < 0) |
| 1386 | sound_perror ("Could not open sound file"); |
| 1387 | |
| 1388 | /* Read the first bytes from the file. */ |
| 1389 | current_sound->header_size |
| 1390 | = emacs_read (current_sound->fd, current_sound->header, |
| 1391 | MAX_SOUND_HEADER_BYTES); |
| 1392 | if (current_sound->header_size < 0) |
| 1393 | sound_perror ("Invalid sound file header"); |
| 1394 | } |
| 1395 | else |
| 1396 | { |
| 1397 | current_sound->data = attrs[SOUND_DATA]; |
| 1398 | current_sound->header_size = min (MAX_SOUND_HEADER_BYTES, SBYTES (current_sound->data)); |
| 1399 | memcpy (current_sound->header, SDATA (current_sound->data), |
| 1400 | current_sound->header_size); |
| 1401 | } |
| 1402 | |
| 1403 | /* Find out the type of sound. Give up if we can't tell. */ |
| 1404 | find_sound_type (current_sound); |
| 1405 | |
| 1406 | /* Set up a device. */ |
| 1407 | if (STRINGP (attrs[SOUND_DEVICE])) |
| 1408 | { |
| 1409 | int len = SCHARS (attrs[SOUND_DEVICE]); |
| 1410 | current_sound_device->file = (char *) alloca (len + 1); |
| 1411 | strcpy (current_sound_device->file, SSDATA (attrs[SOUND_DEVICE])); |
| 1412 | } |
| 1413 | |
| 1414 | if (INTEGERP (attrs[SOUND_VOLUME])) |
| 1415 | current_sound_device->volume = XFASTINT (attrs[SOUND_VOLUME]); |
| 1416 | else if (FLOATP (attrs[SOUND_VOLUME])) |
| 1417 | current_sound_device->volume = XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; |
| 1418 | |
| 1419 | args[0] = Qplay_sound_functions; |
| 1420 | args[1] = sound; |
| 1421 | Frun_hook_with_args (2, args); |
| 1422 | |
| 1423 | #ifdef HAVE_ALSA |
| 1424 | if (!alsa_init (current_sound_device)) |
| 1425 | #endif |
| 1426 | if (!vox_init (current_sound_device)) |
| 1427 | error ("No usable sound device driver found"); |
| 1428 | |
| 1429 | /* Open the device. */ |
| 1430 | current_sound_device->open (current_sound_device); |
| 1431 | |
| 1432 | /* Play the sound. */ |
| 1433 | current_sound->play (current_sound, current_sound_device); |
| 1434 | |
| 1435 | /* Clean up. */ |
| 1436 | UNGCPRO; |
| 1437 | |
| 1438 | #else /* WINDOWSNT */ |
| 1439 | |
| 1440 | lo_file = Fexpand_file_name (attrs[SOUND_FILE], Qnil); |
| 1441 | len = XSTRING (lo_file)->size; |
| 1442 | psz_file = (char *) alloca (len + 1); |
| 1443 | strcpy (psz_file, XSTRING (lo_file)->data); |
| 1444 | if (INTEGERP (attrs[SOUND_VOLUME])) |
| 1445 | { |
| 1446 | ui_volume_tmp = XFASTINT (attrs[SOUND_VOLUME]); |
| 1447 | } |
| 1448 | else if (FLOATP (attrs[SOUND_VOLUME])) |
| 1449 | { |
| 1450 | ui_volume_tmp = XFLOAT_DATA (attrs[SOUND_VOLUME]) * 100; |
| 1451 | } |
| 1452 | /* |
| 1453 | Based on some experiments I have conducted, a value of 100 or less |
| 1454 | for the sound volume is much too low. You cannot even hear it. |
| 1455 | A value of UINT_MAX indicates that you wish for the sound to played |
| 1456 | at the maximum possible volume. A value of UINT_MAX/2 plays the |
| 1457 | sound at 50% maximum volume. Therefore the value passed to do_play_sound |
| 1458 | (and thus to waveOutSetVolume) must be some fraction of UINT_MAX. |
| 1459 | The following code adjusts the user specified volume level appropriately. |
| 1460 | */ |
| 1461 | if ((ui_volume_tmp > 0) && (ui_volume_tmp <= 100)) |
| 1462 | { |
| 1463 | ui_volume = ui_volume_tmp * (UINT_MAX / 100); |
| 1464 | } |
| 1465 | i_result = do_play_sound (psz_file, ui_volume); |
| 1466 | |
| 1467 | #endif /* WINDOWSNT */ |
| 1468 | |
| 1469 | unbind_to (count, Qnil); |
| 1470 | return Qnil; |
| 1471 | } |
| 1472 | \f |
| 1473 | /*********************************************************************** |
| 1474 | Initialization |
| 1475 | ***********************************************************************/ |
| 1476 | |
| 1477 | void |
| 1478 | syms_of_sound (void) |
| 1479 | { |
| 1480 | DEFSYM (QCdevice, ":device"); |
| 1481 | DEFSYM (QCvolume, ":volume"); |
| 1482 | DEFSYM (Qsound, "sound"); |
| 1483 | DEFSYM (Qplay_sound_functions, "play-sound-functions"); |
| 1484 | |
| 1485 | defsubr (&Splay_sound_internal); |
| 1486 | } |
| 1487 | |
| 1488 | |
| 1489 | void |
| 1490 | init_sound (void) |
| 1491 | { |
| 1492 | } |
| 1493 | |
| 1494 | #endif /* HAVE_SOUND */ |