| 1 | /* |
| 2 | * sound/oss/sequencer.c |
| 3 | * |
| 4 | * The sequencer personality manager. |
| 5 | */ |
| 6 | /* |
| 7 | * Copyright (C) by Hannu Savolainen 1993-1997 |
| 8 | * |
| 9 | * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) |
| 10 | * Version 2 (June 1991). See the "COPYING" file distributed with this software |
| 11 | * for more info. |
| 12 | */ |
| 13 | /* |
| 14 | * Thomas Sailer : ioctl code reworked (vmalloc/vfree removed) |
| 15 | * Alan Cox : reformatted and fixed a pair of null pointer bugs |
| 16 | */ |
| 17 | #include <linux/kmod.h> |
| 18 | #include <linux/spinlock.h> |
| 19 | #include "sound_config.h" |
| 20 | |
| 21 | #include "midi_ctrl.h" |
| 22 | |
| 23 | static int sequencer_ok; |
| 24 | static struct sound_timer_operations *tmr; |
| 25 | static int tmr_no = -1; /* Currently selected timer */ |
| 26 | static int pending_timer = -1; /* For timer change operation */ |
| 27 | extern unsigned long seq_time; |
| 28 | |
| 29 | static int obsolete_api_used; |
| 30 | static DEFINE_SPINLOCK(lock); |
| 31 | |
| 32 | /* |
| 33 | * Local counts for number of synth and MIDI devices. These are initialized |
| 34 | * by the sequencer_open. |
| 35 | */ |
| 36 | static int max_mididev; |
| 37 | static int max_synthdev; |
| 38 | |
| 39 | /* |
| 40 | * The seq_mode gives the operating mode of the sequencer: |
| 41 | * 1 = level1 (the default) |
| 42 | * 2 = level2 (extended capabilities) |
| 43 | */ |
| 44 | |
| 45 | #define SEQ_1 1 |
| 46 | #define SEQ_2 2 |
| 47 | static int seq_mode = SEQ_1; |
| 48 | |
| 49 | static DECLARE_WAIT_QUEUE_HEAD(seq_sleeper); |
| 50 | static DECLARE_WAIT_QUEUE_HEAD(midi_sleeper); |
| 51 | |
| 52 | static int midi_opened[MAX_MIDI_DEV]; |
| 53 | |
| 54 | static int midi_written[MAX_MIDI_DEV]; |
| 55 | |
| 56 | static unsigned long prev_input_time; |
| 57 | static int prev_event_time; |
| 58 | |
| 59 | #include "tuning.h" |
| 60 | |
| 61 | #define EV_SZ 8 |
| 62 | #define IEV_SZ 8 |
| 63 | |
| 64 | static unsigned char *queue; |
| 65 | static unsigned char *iqueue; |
| 66 | |
| 67 | static volatile int qhead, qtail, qlen; |
| 68 | static volatile int iqhead, iqtail, iqlen; |
| 69 | static volatile int seq_playing; |
| 70 | static volatile int sequencer_busy; |
| 71 | static int output_threshold; |
| 72 | static long pre_event_timeout; |
| 73 | static unsigned synth_open_mask; |
| 74 | |
| 75 | static int seq_queue(unsigned char *note, char nonblock); |
| 76 | static void seq_startplay(void); |
| 77 | static int seq_sync(void); |
| 78 | static void seq_reset(void); |
| 79 | |
| 80 | #if MAX_SYNTH_DEV > 15 |
| 81 | #error Too many synthesizer devices enabled. |
| 82 | #endif |
| 83 | |
| 84 | int sequencer_read(int dev, struct file *file, char __user *buf, int count) |
| 85 | { |
| 86 | int c = count, p = 0; |
| 87 | int ev_len; |
| 88 | unsigned long flags; |
| 89 | |
| 90 | dev = dev >> 4; |
| 91 | |
| 92 | ev_len = seq_mode == SEQ_1 ? 4 : 8; |
| 93 | |
| 94 | spin_lock_irqsave(&lock,flags); |
| 95 | |
| 96 | if (!iqlen) |
| 97 | { |
| 98 | spin_unlock_irqrestore(&lock,flags); |
| 99 | if (file->f_flags & O_NONBLOCK) { |
| 100 | return -EAGAIN; |
| 101 | } |
| 102 | |
| 103 | interruptible_sleep_on_timeout(&midi_sleeper, |
| 104 | pre_event_timeout); |
| 105 | spin_lock_irqsave(&lock,flags); |
| 106 | if (!iqlen) |
| 107 | { |
| 108 | spin_unlock_irqrestore(&lock,flags); |
| 109 | return 0; |
| 110 | } |
| 111 | } |
| 112 | while (iqlen && c >= ev_len) |
| 113 | { |
| 114 | char *fixit = (char *) &iqueue[iqhead * IEV_SZ]; |
| 115 | spin_unlock_irqrestore(&lock,flags); |
| 116 | if (copy_to_user(&(buf)[p], fixit, ev_len)) |
| 117 | return count - c; |
| 118 | p += ev_len; |
| 119 | c -= ev_len; |
| 120 | |
| 121 | spin_lock_irqsave(&lock,flags); |
| 122 | iqhead = (iqhead + 1) % SEQ_MAX_QUEUE; |
| 123 | iqlen--; |
| 124 | } |
| 125 | spin_unlock_irqrestore(&lock,flags); |
| 126 | return count - c; |
| 127 | } |
| 128 | |
| 129 | static void sequencer_midi_output(int dev) |
| 130 | { |
| 131 | /* |
| 132 | * Currently NOP |
| 133 | */ |
| 134 | } |
| 135 | |
| 136 | void seq_copy_to_input(unsigned char *event_rec, int len) |
| 137 | { |
| 138 | unsigned long flags; |
| 139 | |
| 140 | /* |
| 141 | * Verify that the len is valid for the current mode. |
| 142 | */ |
| 143 | |
| 144 | if (len != 4 && len != 8) |
| 145 | return; |
| 146 | if ((seq_mode == SEQ_1) != (len == 4)) |
| 147 | return; |
| 148 | |
| 149 | if (iqlen >= (SEQ_MAX_QUEUE - 1)) |
| 150 | return; /* Overflow */ |
| 151 | |
| 152 | spin_lock_irqsave(&lock,flags); |
| 153 | memcpy(&iqueue[iqtail * IEV_SZ], event_rec, len); |
| 154 | iqlen++; |
| 155 | iqtail = (iqtail + 1) % SEQ_MAX_QUEUE; |
| 156 | wake_up(&midi_sleeper); |
| 157 | spin_unlock_irqrestore(&lock,flags); |
| 158 | } |
| 159 | EXPORT_SYMBOL(seq_copy_to_input); |
| 160 | |
| 161 | static void sequencer_midi_input(int dev, unsigned char data) |
| 162 | { |
| 163 | unsigned int tstamp; |
| 164 | unsigned char event_rec[4]; |
| 165 | |
| 166 | if (data == 0xfe) /* Ignore active sensing */ |
| 167 | return; |
| 168 | |
| 169 | tstamp = jiffies - seq_time; |
| 170 | |
| 171 | if (tstamp != prev_input_time) |
| 172 | { |
| 173 | tstamp = (tstamp << 8) | SEQ_WAIT; |
| 174 | seq_copy_to_input((unsigned char *) &tstamp, 4); |
| 175 | prev_input_time = tstamp; |
| 176 | } |
| 177 | event_rec[0] = SEQ_MIDIPUTC; |
| 178 | event_rec[1] = data; |
| 179 | event_rec[2] = dev; |
| 180 | event_rec[3] = 0; |
| 181 | |
| 182 | seq_copy_to_input(event_rec, 4); |
| 183 | } |
| 184 | |
| 185 | void seq_input_event(unsigned char *event_rec, int len) |
| 186 | { |
| 187 | unsigned long this_time; |
| 188 | |
| 189 | if (seq_mode == SEQ_2) |
| 190 | this_time = tmr->get_time(tmr_no); |
| 191 | else |
| 192 | this_time = jiffies - seq_time; |
| 193 | |
| 194 | if (this_time != prev_input_time) |
| 195 | { |
| 196 | unsigned char tmp_event[8]; |
| 197 | |
| 198 | tmp_event[0] = EV_TIMING; |
| 199 | tmp_event[1] = TMR_WAIT_ABS; |
| 200 | tmp_event[2] = 0; |
| 201 | tmp_event[3] = 0; |
| 202 | *(unsigned int *) &tmp_event[4] = this_time; |
| 203 | |
| 204 | seq_copy_to_input(tmp_event, 8); |
| 205 | prev_input_time = this_time; |
| 206 | } |
| 207 | seq_copy_to_input(event_rec, len); |
| 208 | } |
| 209 | EXPORT_SYMBOL(seq_input_event); |
| 210 | |
| 211 | int sequencer_write(int dev, struct file *file, const char __user *buf, int count) |
| 212 | { |
| 213 | unsigned char event_rec[EV_SZ], ev_code; |
| 214 | int p = 0, c, ev_size; |
| 215 | int mode = translate_mode(file); |
| 216 | |
| 217 | dev = dev >> 4; |
| 218 | |
| 219 | DEB(printk("sequencer_write(dev=%d, count=%d)\n", dev, count)); |
| 220 | |
| 221 | if (mode == OPEN_READ) |
| 222 | return -EIO; |
| 223 | |
| 224 | c = count; |
| 225 | |
| 226 | while (c >= 4) |
| 227 | { |
| 228 | if (copy_from_user((char *) event_rec, &(buf)[p], 4)) |
| 229 | goto out; |
| 230 | ev_code = event_rec[0]; |
| 231 | |
| 232 | if (ev_code == SEQ_FULLSIZE) |
| 233 | { |
| 234 | int err, fmt; |
| 235 | |
| 236 | dev = *(unsigned short *) &event_rec[2]; |
| 237 | if (dev < 0 || dev >= max_synthdev || synth_devs[dev] == NULL) |
| 238 | return -ENXIO; |
| 239 | |
| 240 | if (!(synth_open_mask & (1 << dev))) |
| 241 | return -ENXIO; |
| 242 | |
| 243 | fmt = (*(short *) &event_rec[0]) & 0xffff; |
| 244 | err = synth_devs[dev]->load_patch(dev, fmt, buf + p, c, 0); |
| 245 | if (err < 0) |
| 246 | return err; |
| 247 | |
| 248 | return err; |
| 249 | } |
| 250 | if (ev_code >= 128) |
| 251 | { |
| 252 | if (seq_mode == SEQ_2 && ev_code == SEQ_EXTENDED) |
| 253 | { |
| 254 | printk(KERN_WARNING "Sequencer: Invalid level 2 event %x\n", ev_code); |
| 255 | return -EINVAL; |
| 256 | } |
| 257 | ev_size = 8; |
| 258 | |
| 259 | if (c < ev_size) |
| 260 | { |
| 261 | if (!seq_playing) |
| 262 | seq_startplay(); |
| 263 | return count - c; |
| 264 | } |
| 265 | if (copy_from_user((char *)&event_rec[4], |
| 266 | &(buf)[p + 4], 4)) |
| 267 | goto out; |
| 268 | |
| 269 | } |
| 270 | else |
| 271 | { |
| 272 | if (seq_mode == SEQ_2) |
| 273 | { |
| 274 | printk(KERN_WARNING "Sequencer: 4 byte event in level 2 mode\n"); |
| 275 | return -EINVAL; |
| 276 | } |
| 277 | ev_size = 4; |
| 278 | |
| 279 | if (event_rec[0] != SEQ_MIDIPUTC) |
| 280 | obsolete_api_used = 1; |
| 281 | } |
| 282 | |
| 283 | if (event_rec[0] == SEQ_MIDIPUTC) |
| 284 | { |
| 285 | if (!midi_opened[event_rec[2]]) |
| 286 | { |
| 287 | int err, mode; |
| 288 | int dev = event_rec[2]; |
| 289 | |
| 290 | if (dev >= max_mididev || midi_devs[dev]==NULL) |
| 291 | { |
| 292 | /*printk("Sequencer Error: Nonexistent MIDI device %d\n", dev);*/ |
| 293 | return -ENXIO; |
| 294 | } |
| 295 | mode = translate_mode(file); |
| 296 | |
| 297 | if ((err = midi_devs[dev]->open(dev, mode, |
| 298 | sequencer_midi_input, sequencer_midi_output)) < 0) |
| 299 | { |
| 300 | seq_reset(); |
| 301 | printk(KERN_WARNING "Sequencer Error: Unable to open Midi #%d\n", dev); |
| 302 | return err; |
| 303 | } |
| 304 | midi_opened[dev] = 1; |
| 305 | } |
| 306 | } |
| 307 | if (!seq_queue(event_rec, (file->f_flags & (O_NONBLOCK) ? 1 : 0))) |
| 308 | { |
| 309 | int processed = count - c; |
| 310 | |
| 311 | if (!seq_playing) |
| 312 | seq_startplay(); |
| 313 | |
| 314 | if (!processed && (file->f_flags & O_NONBLOCK)) |
| 315 | return -EAGAIN; |
| 316 | else |
| 317 | return processed; |
| 318 | } |
| 319 | p += ev_size; |
| 320 | c -= ev_size; |
| 321 | } |
| 322 | |
| 323 | if (!seq_playing) |
| 324 | seq_startplay(); |
| 325 | out: |
| 326 | return count; |
| 327 | } |
| 328 | |
| 329 | static int seq_queue(unsigned char *note, char nonblock) |
| 330 | { |
| 331 | |
| 332 | /* |
| 333 | * Test if there is space in the queue |
| 334 | */ |
| 335 | |
| 336 | if (qlen >= SEQ_MAX_QUEUE) |
| 337 | if (!seq_playing) |
| 338 | seq_startplay(); /* |
| 339 | * Give chance to drain the queue |
| 340 | */ |
| 341 | |
| 342 | if (!nonblock && qlen >= SEQ_MAX_QUEUE && !waitqueue_active(&seq_sleeper)) { |
| 343 | /* |
| 344 | * Sleep until there is enough space on the queue |
| 345 | */ |
| 346 | interruptible_sleep_on(&seq_sleeper); |
| 347 | } |
| 348 | if (qlen >= SEQ_MAX_QUEUE) |
| 349 | { |
| 350 | return 0; /* |
| 351 | * To be sure |
| 352 | */ |
| 353 | } |
| 354 | memcpy(&queue[qtail * EV_SZ], note, EV_SZ); |
| 355 | |
| 356 | qtail = (qtail + 1) % SEQ_MAX_QUEUE; |
| 357 | qlen++; |
| 358 | |
| 359 | return 1; |
| 360 | } |
| 361 | |
| 362 | static int extended_event(unsigned char *q) |
| 363 | { |
| 364 | int dev = q[2]; |
| 365 | |
| 366 | if (dev < 0 || dev >= max_synthdev) |
| 367 | return -ENXIO; |
| 368 | |
| 369 | if (!(synth_open_mask & (1 << dev))) |
| 370 | return -ENXIO; |
| 371 | |
| 372 | switch (q[1]) |
| 373 | { |
| 374 | case SEQ_NOTEOFF: |
| 375 | synth_devs[dev]->kill_note(dev, q[3], q[4], q[5]); |
| 376 | break; |
| 377 | |
| 378 | case SEQ_NOTEON: |
| 379 | if (q[4] > 127 && q[4] != 255) |
| 380 | return 0; |
| 381 | |
| 382 | if (q[5] == 0) |
| 383 | { |
| 384 | synth_devs[dev]->kill_note(dev, q[3], q[4], q[5]); |
| 385 | break; |
| 386 | } |
| 387 | synth_devs[dev]->start_note(dev, q[3], q[4], q[5]); |
| 388 | break; |
| 389 | |
| 390 | case SEQ_PGMCHANGE: |
| 391 | synth_devs[dev]->set_instr(dev, q[3], q[4]); |
| 392 | break; |
| 393 | |
| 394 | case SEQ_AFTERTOUCH: |
| 395 | synth_devs[dev]->aftertouch(dev, q[3], q[4]); |
| 396 | break; |
| 397 | |
| 398 | case SEQ_BALANCE: |
| 399 | synth_devs[dev]->panning(dev, q[3], (char) q[4]); |
| 400 | break; |
| 401 | |
| 402 | case SEQ_CONTROLLER: |
| 403 | synth_devs[dev]->controller(dev, q[3], q[4], (short) (q[5] | (q[6] << 8))); |
| 404 | break; |
| 405 | |
| 406 | case SEQ_VOLMODE: |
| 407 | if (synth_devs[dev]->volume_method != NULL) |
| 408 | synth_devs[dev]->volume_method(dev, q[3]); |
| 409 | break; |
| 410 | |
| 411 | default: |
| 412 | return -EINVAL; |
| 413 | } |
| 414 | return 0; |
| 415 | } |
| 416 | |
| 417 | static int find_voice(int dev, int chn, int note) |
| 418 | { |
| 419 | unsigned short key; |
| 420 | int i; |
| 421 | |
| 422 | key = (chn << 8) | (note + 1); |
| 423 | for (i = 0; i < synth_devs[dev]->alloc.max_voice; i++) |
| 424 | if (synth_devs[dev]->alloc.map[i] == key) |
| 425 | return i; |
| 426 | return -1; |
| 427 | } |
| 428 | |
| 429 | static int alloc_voice(int dev, int chn, int note) |
| 430 | { |
| 431 | unsigned short key; |
| 432 | int voice; |
| 433 | |
| 434 | key = (chn << 8) | (note + 1); |
| 435 | |
| 436 | voice = synth_devs[dev]->alloc_voice(dev, chn, note, |
| 437 | &synth_devs[dev]->alloc); |
| 438 | synth_devs[dev]->alloc.map[voice] = key; |
| 439 | synth_devs[dev]->alloc.alloc_times[voice] = |
| 440 | synth_devs[dev]->alloc.timestamp++; |
| 441 | return voice; |
| 442 | } |
| 443 | |
| 444 | static void seq_chn_voice_event(unsigned char *event_rec) |
| 445 | { |
| 446 | #define dev event_rec[1] |
| 447 | #define cmd event_rec[2] |
| 448 | #define chn event_rec[3] |
| 449 | #define note event_rec[4] |
| 450 | #define parm event_rec[5] |
| 451 | |
| 452 | int voice = -1; |
| 453 | |
| 454 | if ((int) dev > max_synthdev || synth_devs[dev] == NULL) |
| 455 | return; |
| 456 | if (!(synth_open_mask & (1 << dev))) |
| 457 | return; |
| 458 | if (!synth_devs[dev]) |
| 459 | return; |
| 460 | |
| 461 | if (seq_mode == SEQ_2) |
| 462 | { |
| 463 | if (synth_devs[dev]->alloc_voice) |
| 464 | voice = find_voice(dev, chn, note); |
| 465 | |
| 466 | if (cmd == MIDI_NOTEON && parm == 0) |
| 467 | { |
| 468 | cmd = MIDI_NOTEOFF; |
| 469 | parm = 64; |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | switch (cmd) |
| 474 | { |
| 475 | case MIDI_NOTEON: |
| 476 | if (note > 127 && note != 255) /* Not a seq2 feature */ |
| 477 | return; |
| 478 | |
| 479 | if (voice == -1 && seq_mode == SEQ_2 && synth_devs[dev]->alloc_voice) |
| 480 | { |
| 481 | /* Internal synthesizer (FM, GUS, etc) */ |
| 482 | voice = alloc_voice(dev, chn, note); |
| 483 | } |
| 484 | if (voice == -1) |
| 485 | voice = chn; |
| 486 | |
| 487 | if (seq_mode == SEQ_2 && (int) dev < num_synths) |
| 488 | { |
| 489 | /* |
| 490 | * The MIDI channel 10 is a percussive channel. Use the note |
| 491 | * number to select the proper patch (128 to 255) to play. |
| 492 | */ |
| 493 | |
| 494 | if (chn == 9) |
| 495 | { |
| 496 | synth_devs[dev]->set_instr(dev, voice, 128 + note); |
| 497 | synth_devs[dev]->chn_info[chn].pgm_num = 128 + note; |
| 498 | } |
| 499 | synth_devs[dev]->setup_voice(dev, voice, chn); |
| 500 | } |
| 501 | synth_devs[dev]->start_note(dev, voice, note, parm); |
| 502 | break; |
| 503 | |
| 504 | case MIDI_NOTEOFF: |
| 505 | if (voice == -1) |
| 506 | voice = chn; |
| 507 | synth_devs[dev]->kill_note(dev, voice, note, parm); |
| 508 | break; |
| 509 | |
| 510 | case MIDI_KEY_PRESSURE: |
| 511 | if (voice == -1) |
| 512 | voice = chn; |
| 513 | synth_devs[dev]->aftertouch(dev, voice, parm); |
| 514 | break; |
| 515 | |
| 516 | default:; |
| 517 | } |
| 518 | #undef dev |
| 519 | #undef cmd |
| 520 | #undef chn |
| 521 | #undef note |
| 522 | #undef parm |
| 523 | } |
| 524 | |
| 525 | |
| 526 | static void seq_chn_common_event(unsigned char *event_rec) |
| 527 | { |
| 528 | unsigned char dev = event_rec[1]; |
| 529 | unsigned char cmd = event_rec[2]; |
| 530 | unsigned char chn = event_rec[3]; |
| 531 | unsigned char p1 = event_rec[4]; |
| 532 | |
| 533 | /* unsigned char p2 = event_rec[5]; */ |
| 534 | unsigned short w14 = *(short *) &event_rec[6]; |
| 535 | |
| 536 | if ((int) dev > max_synthdev || synth_devs[dev] == NULL) |
| 537 | return; |
| 538 | if (!(synth_open_mask & (1 << dev))) |
| 539 | return; |
| 540 | if (!synth_devs[dev]) |
| 541 | return; |
| 542 | |
| 543 | switch (cmd) |
| 544 | { |
| 545 | case MIDI_PGM_CHANGE: |
| 546 | if (seq_mode == SEQ_2) |
| 547 | { |
| 548 | synth_devs[dev]->chn_info[chn].pgm_num = p1; |
| 549 | if ((int) dev >= num_synths) |
| 550 | synth_devs[dev]->set_instr(dev, chn, p1); |
| 551 | } |
| 552 | else |
| 553 | synth_devs[dev]->set_instr(dev, chn, p1); |
| 554 | |
| 555 | break; |
| 556 | |
| 557 | case MIDI_CTL_CHANGE: |
| 558 | if (seq_mode == SEQ_2) |
| 559 | { |
| 560 | if (chn > 15 || p1 > 127) |
| 561 | break; |
| 562 | |
| 563 | synth_devs[dev]->chn_info[chn].controllers[p1] = w14 & 0x7f; |
| 564 | |
| 565 | if (p1 < 32) /* Setting MSB should clear LSB to 0 */ |
| 566 | synth_devs[dev]->chn_info[chn].controllers[p1 + 32] = 0; |
| 567 | |
| 568 | if ((int) dev < num_synths) |
| 569 | { |
| 570 | int val = w14 & 0x7f; |
| 571 | int i, key; |
| 572 | |
| 573 | if (p1 < 64) /* Combine MSB and LSB */ |
| 574 | { |
| 575 | val = ((synth_devs[dev]-> |
| 576 | chn_info[chn].controllers[p1 & ~32] & 0x7f) << 7) |
| 577 | | (synth_devs[dev]-> |
| 578 | chn_info[chn].controllers[p1 | 32] & 0x7f); |
| 579 | p1 &= ~32; |
| 580 | } |
| 581 | /* Handle all playing notes on this channel */ |
| 582 | |
| 583 | key = ((int) chn << 8); |
| 584 | |
| 585 | for (i = 0; i < synth_devs[dev]->alloc.max_voice; i++) |
| 586 | if ((synth_devs[dev]->alloc.map[i] & 0xff00) == key) |
| 587 | synth_devs[dev]->controller(dev, i, p1, val); |
| 588 | } |
| 589 | else |
| 590 | synth_devs[dev]->controller(dev, chn, p1, w14); |
| 591 | } |
| 592 | else /* Mode 1 */ |
| 593 | synth_devs[dev]->controller(dev, chn, p1, w14); |
| 594 | break; |
| 595 | |
| 596 | case MIDI_PITCH_BEND: |
| 597 | if (seq_mode == SEQ_2) |
| 598 | { |
| 599 | synth_devs[dev]->chn_info[chn].bender_value = w14; |
| 600 | |
| 601 | if ((int) dev < num_synths) |
| 602 | { |
| 603 | /* Handle all playing notes on this channel */ |
| 604 | int i, key; |
| 605 | |
| 606 | key = (chn << 8); |
| 607 | |
| 608 | for (i = 0; i < synth_devs[dev]->alloc.max_voice; i++) |
| 609 | if ((synth_devs[dev]->alloc.map[i] & 0xff00) == key) |
| 610 | synth_devs[dev]->bender(dev, i, w14); |
| 611 | } |
| 612 | else |
| 613 | synth_devs[dev]->bender(dev, chn, w14); |
| 614 | } |
| 615 | else /* MODE 1 */ |
| 616 | synth_devs[dev]->bender(dev, chn, w14); |
| 617 | break; |
| 618 | |
| 619 | default:; |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | static int seq_timing_event(unsigned char *event_rec) |
| 624 | { |
| 625 | unsigned char cmd = event_rec[1]; |
| 626 | unsigned int parm = *(int *) &event_rec[4]; |
| 627 | |
| 628 | if (seq_mode == SEQ_2) |
| 629 | { |
| 630 | int ret; |
| 631 | |
| 632 | if ((ret = tmr->event(tmr_no, event_rec)) == TIMER_ARMED) |
| 633 | if ((SEQ_MAX_QUEUE - qlen) >= output_threshold) |
| 634 | wake_up(&seq_sleeper); |
| 635 | return ret; |
| 636 | } |
| 637 | switch (cmd) |
| 638 | { |
| 639 | case TMR_WAIT_REL: |
| 640 | parm += prev_event_time; |
| 641 | |
| 642 | /* |
| 643 | * NOTE! No break here. Execution of TMR_WAIT_REL continues in the |
| 644 | * next case (TMR_WAIT_ABS) |
| 645 | */ |
| 646 | |
| 647 | case TMR_WAIT_ABS: |
| 648 | if (parm > 0) |
| 649 | { |
| 650 | long time; |
| 651 | |
| 652 | time = parm; |
| 653 | prev_event_time = time; |
| 654 | |
| 655 | seq_playing = 1; |
| 656 | request_sound_timer(time); |
| 657 | |
| 658 | if ((SEQ_MAX_QUEUE - qlen) >= output_threshold) |
| 659 | wake_up(&seq_sleeper); |
| 660 | return TIMER_ARMED; |
| 661 | } |
| 662 | break; |
| 663 | |
| 664 | case TMR_START: |
| 665 | seq_time = jiffies; |
| 666 | prev_input_time = 0; |
| 667 | prev_event_time = 0; |
| 668 | break; |
| 669 | |
| 670 | case TMR_STOP: |
| 671 | break; |
| 672 | |
| 673 | case TMR_CONTINUE: |
| 674 | break; |
| 675 | |
| 676 | case TMR_TEMPO: |
| 677 | break; |
| 678 | |
| 679 | case TMR_ECHO: |
| 680 | if (seq_mode == SEQ_2) |
| 681 | seq_copy_to_input(event_rec, 8); |
| 682 | else |
| 683 | { |
| 684 | parm = (parm << 8 | SEQ_ECHO); |
| 685 | seq_copy_to_input((unsigned char *) &parm, 4); |
| 686 | } |
| 687 | break; |
| 688 | |
| 689 | default:; |
| 690 | } |
| 691 | |
| 692 | return TIMER_NOT_ARMED; |
| 693 | } |
| 694 | |
| 695 | static void seq_local_event(unsigned char *event_rec) |
| 696 | { |
| 697 | unsigned char cmd = event_rec[1]; |
| 698 | unsigned int parm = *((unsigned int *) &event_rec[4]); |
| 699 | |
| 700 | switch (cmd) |
| 701 | { |
| 702 | case LOCL_STARTAUDIO: |
| 703 | DMAbuf_start_devices(parm); |
| 704 | break; |
| 705 | |
| 706 | default:; |
| 707 | } |
| 708 | } |
| 709 | |
| 710 | static void seq_sysex_message(unsigned char *event_rec) |
| 711 | { |
| 712 | unsigned int dev = event_rec[1]; |
| 713 | int i, l = 0; |
| 714 | unsigned char *buf = &event_rec[2]; |
| 715 | |
| 716 | if (dev > max_synthdev) |
| 717 | return; |
| 718 | if (!(synth_open_mask & (1 << dev))) |
| 719 | return; |
| 720 | if (!synth_devs[dev]) |
| 721 | return; |
| 722 | |
| 723 | l = 0; |
| 724 | for (i = 0; i < 6 && buf[i] != 0xff; i++) |
| 725 | l = i + 1; |
| 726 | |
| 727 | if (!synth_devs[dev]->send_sysex) |
| 728 | return; |
| 729 | if (l > 0) |
| 730 | synth_devs[dev]->send_sysex(dev, buf, l); |
| 731 | } |
| 732 | |
| 733 | static int play_event(unsigned char *q) |
| 734 | { |
| 735 | /* |
| 736 | * NOTE! This routine returns |
| 737 | * 0 = normal event played. |
| 738 | * 1 = Timer armed. Suspend playback until timer callback. |
| 739 | * 2 = MIDI output buffer full. Restore queue and suspend until timer |
| 740 | */ |
| 741 | unsigned int *delay; |
| 742 | |
| 743 | switch (q[0]) |
| 744 | { |
| 745 | case SEQ_NOTEOFF: |
| 746 | if (synth_open_mask & (1 << 0)) |
| 747 | if (synth_devs[0]) |
| 748 | synth_devs[0]->kill_note(0, q[1], 255, q[3]); |
| 749 | break; |
| 750 | |
| 751 | case SEQ_NOTEON: |
| 752 | if (q[4] < 128 || q[4] == 255) |
| 753 | if (synth_open_mask & (1 << 0)) |
| 754 | if (synth_devs[0]) |
| 755 | synth_devs[0]->start_note(0, q[1], q[2], q[3]); |
| 756 | break; |
| 757 | |
| 758 | case SEQ_WAIT: |
| 759 | delay = (unsigned int *) q; /* |
| 760 | * Bytes 1 to 3 are containing the * |
| 761 | * delay in 'ticks' |
| 762 | */ |
| 763 | *delay = (*delay >> 8) & 0xffffff; |
| 764 | |
| 765 | if (*delay > 0) |
| 766 | { |
| 767 | long time; |
| 768 | |
| 769 | seq_playing = 1; |
| 770 | time = *delay; |
| 771 | prev_event_time = time; |
| 772 | |
| 773 | request_sound_timer(time); |
| 774 | |
| 775 | if ((SEQ_MAX_QUEUE - qlen) >= output_threshold) |
| 776 | wake_up(&seq_sleeper); |
| 777 | /* |
| 778 | * The timer is now active and will reinvoke this function |
| 779 | * after the timer expires. Return to the caller now. |
| 780 | */ |
| 781 | return 1; |
| 782 | } |
| 783 | break; |
| 784 | |
| 785 | case SEQ_PGMCHANGE: |
| 786 | if (synth_open_mask & (1 << 0)) |
| 787 | if (synth_devs[0]) |
| 788 | synth_devs[0]->set_instr(0, q[1], q[2]); |
| 789 | break; |
| 790 | |
| 791 | case SEQ_SYNCTIMER: /* |
| 792 | * Reset timer |
| 793 | */ |
| 794 | seq_time = jiffies; |
| 795 | prev_input_time = 0; |
| 796 | prev_event_time = 0; |
| 797 | break; |
| 798 | |
| 799 | case SEQ_MIDIPUTC: /* |
| 800 | * Put a midi character |
| 801 | */ |
| 802 | if (midi_opened[q[2]]) |
| 803 | { |
| 804 | int dev; |
| 805 | |
| 806 | dev = q[2]; |
| 807 | |
| 808 | if (dev < 0 || dev >= num_midis || midi_devs[dev] == NULL) |
| 809 | break; |
| 810 | |
| 811 | if (!midi_devs[dev]->outputc(dev, q[1])) |
| 812 | { |
| 813 | /* |
| 814 | * Output FIFO is full. Wait one timer cycle and try again. |
| 815 | */ |
| 816 | |
| 817 | seq_playing = 1; |
| 818 | request_sound_timer(-1); |
| 819 | return 2; |
| 820 | } |
| 821 | else |
| 822 | midi_written[dev] = 1; |
| 823 | } |
| 824 | break; |
| 825 | |
| 826 | case SEQ_ECHO: |
| 827 | seq_copy_to_input(q, 4); /* |
| 828 | * Echo back to the process |
| 829 | */ |
| 830 | break; |
| 831 | |
| 832 | case SEQ_PRIVATE: |
| 833 | if ((int) q[1] < max_synthdev) |
| 834 | synth_devs[q[1]]->hw_control(q[1], q); |
| 835 | break; |
| 836 | |
| 837 | case SEQ_EXTENDED: |
| 838 | extended_event(q); |
| 839 | break; |
| 840 | |
| 841 | case EV_CHN_VOICE: |
| 842 | seq_chn_voice_event(q); |
| 843 | break; |
| 844 | |
| 845 | case EV_CHN_COMMON: |
| 846 | seq_chn_common_event(q); |
| 847 | break; |
| 848 | |
| 849 | case EV_TIMING: |
| 850 | if (seq_timing_event(q) == TIMER_ARMED) |
| 851 | { |
| 852 | return 1; |
| 853 | } |
| 854 | break; |
| 855 | |
| 856 | case EV_SEQ_LOCAL: |
| 857 | seq_local_event(q); |
| 858 | break; |
| 859 | |
| 860 | case EV_SYSEX: |
| 861 | seq_sysex_message(q); |
| 862 | break; |
| 863 | |
| 864 | default:; |
| 865 | } |
| 866 | return 0; |
| 867 | } |
| 868 | |
| 869 | /* called also as timer in irq context */ |
| 870 | static void seq_startplay(void) |
| 871 | { |
| 872 | int this_one, action; |
| 873 | unsigned long flags; |
| 874 | |
| 875 | while (qlen > 0) |
| 876 | { |
| 877 | |
| 878 | spin_lock_irqsave(&lock,flags); |
| 879 | qhead = ((this_one = qhead) + 1) % SEQ_MAX_QUEUE; |
| 880 | qlen--; |
| 881 | spin_unlock_irqrestore(&lock,flags); |
| 882 | |
| 883 | seq_playing = 1; |
| 884 | |
| 885 | if ((action = play_event(&queue[this_one * EV_SZ]))) |
| 886 | { /* Suspend playback. Next timer routine invokes this routine again */ |
| 887 | if (action == 2) |
| 888 | { |
| 889 | qlen++; |
| 890 | qhead = this_one; |
| 891 | } |
| 892 | return; |
| 893 | } |
| 894 | } |
| 895 | |
| 896 | seq_playing = 0; |
| 897 | |
| 898 | if ((SEQ_MAX_QUEUE - qlen) >= output_threshold) |
| 899 | wake_up(&seq_sleeper); |
| 900 | } |
| 901 | |
| 902 | static void reset_controllers(int dev, unsigned char *controller, int update_dev) |
| 903 | { |
| 904 | int i; |
| 905 | for (i = 0; i < 128; i++) |
| 906 | controller[i] = ctrl_def_values[i]; |
| 907 | } |
| 908 | |
| 909 | static void setup_mode2(void) |
| 910 | { |
| 911 | int dev; |
| 912 | |
| 913 | max_synthdev = num_synths; |
| 914 | |
| 915 | for (dev = 0; dev < num_midis; dev++) |
| 916 | { |
| 917 | if (midi_devs[dev] && midi_devs[dev]->converter != NULL) |
| 918 | { |
| 919 | synth_devs[max_synthdev++] = midi_devs[dev]->converter; |
| 920 | } |
| 921 | } |
| 922 | |
| 923 | for (dev = 0; dev < max_synthdev; dev++) |
| 924 | { |
| 925 | int chn; |
| 926 | |
| 927 | synth_devs[dev]->sysex_ptr = 0; |
| 928 | synth_devs[dev]->emulation = 0; |
| 929 | |
| 930 | for (chn = 0; chn < 16; chn++) |
| 931 | { |
| 932 | synth_devs[dev]->chn_info[chn].pgm_num = 0; |
| 933 | reset_controllers(dev, |
| 934 | synth_devs[dev]->chn_info[chn].controllers,0); |
| 935 | synth_devs[dev]->chn_info[chn].bender_value = (1 << 7); /* Neutral */ |
| 936 | synth_devs[dev]->chn_info[chn].bender_range = 200; |
| 937 | } |
| 938 | } |
| 939 | max_mididev = 0; |
| 940 | seq_mode = SEQ_2; |
| 941 | } |
| 942 | |
| 943 | int sequencer_open(int dev, struct file *file) |
| 944 | { |
| 945 | int retval, mode, i; |
| 946 | int level, tmp; |
| 947 | |
| 948 | if (!sequencer_ok) |
| 949 | sequencer_init(); |
| 950 | |
| 951 | level = ((dev & 0x0f) == SND_DEV_SEQ2) ? 2 : 1; |
| 952 | |
| 953 | dev = dev >> 4; |
| 954 | mode = translate_mode(file); |
| 955 | |
| 956 | DEB(printk("sequencer_open(dev=%d)\n", dev)); |
| 957 | |
| 958 | if (!sequencer_ok) |
| 959 | { |
| 960 | /* printk("Sound card: sequencer not initialized\n");*/ |
| 961 | return -ENXIO; |
| 962 | } |
| 963 | if (dev) /* Patch manager device (obsolete) */ |
| 964 | return -ENXIO; |
| 965 | |
| 966 | if(synth_devs[dev] == NULL) |
| 967 | request_module("synth0"); |
| 968 | |
| 969 | if (mode == OPEN_READ) |
| 970 | { |
| 971 | if (!num_midis) |
| 972 | { |
| 973 | /*printk("Sequencer: No MIDI devices. Input not possible\n");*/ |
| 974 | sequencer_busy = 0; |
| 975 | return -ENXIO; |
| 976 | } |
| 977 | } |
| 978 | if (sequencer_busy) |
| 979 | { |
| 980 | return -EBUSY; |
| 981 | } |
| 982 | sequencer_busy = 1; |
| 983 | obsolete_api_used = 0; |
| 984 | |
| 985 | max_mididev = num_midis; |
| 986 | max_synthdev = num_synths; |
| 987 | pre_event_timeout = MAX_SCHEDULE_TIMEOUT; |
| 988 | seq_mode = SEQ_1; |
| 989 | |
| 990 | if (pending_timer != -1) |
| 991 | { |
| 992 | tmr_no = pending_timer; |
| 993 | pending_timer = -1; |
| 994 | } |
| 995 | if (tmr_no == -1) /* Not selected yet */ |
| 996 | { |
| 997 | int i, best; |
| 998 | |
| 999 | best = -1; |
| 1000 | for (i = 0; i < num_sound_timers; i++) |
| 1001 | if (sound_timer_devs[i] && sound_timer_devs[i]->priority > best) |
| 1002 | { |
| 1003 | tmr_no = i; |
| 1004 | best = sound_timer_devs[i]->priority; |
| 1005 | } |
| 1006 | if (tmr_no == -1) /* Should not be */ |
| 1007 | tmr_no = 0; |
| 1008 | } |
| 1009 | tmr = sound_timer_devs[tmr_no]; |
| 1010 | |
| 1011 | if (level == 2) |
| 1012 | { |
| 1013 | if (tmr == NULL) |
| 1014 | { |
| 1015 | /*printk("sequencer: No timer for level 2\n");*/ |
| 1016 | sequencer_busy = 0; |
| 1017 | return -ENXIO; |
| 1018 | } |
| 1019 | setup_mode2(); |
| 1020 | } |
| 1021 | if (!max_synthdev && !max_mididev) |
| 1022 | { |
| 1023 | sequencer_busy=0; |
| 1024 | return -ENXIO; |
| 1025 | } |
| 1026 | |
| 1027 | synth_open_mask = 0; |
| 1028 | |
| 1029 | for (i = 0; i < max_mididev; i++) |
| 1030 | { |
| 1031 | midi_opened[i] = 0; |
| 1032 | midi_written[i] = 0; |
| 1033 | } |
| 1034 | |
| 1035 | for (i = 0; i < max_synthdev; i++) |
| 1036 | { |
| 1037 | if (synth_devs[i]==NULL) |
| 1038 | continue; |
| 1039 | |
| 1040 | if (!try_module_get(synth_devs[i]->owner)) |
| 1041 | continue; |
| 1042 | |
| 1043 | if ((tmp = synth_devs[i]->open(i, mode)) < 0) |
| 1044 | { |
| 1045 | printk(KERN_WARNING "Sequencer: Warning! Cannot open synth device #%d (%d)\n", i, tmp); |
| 1046 | if (synth_devs[i]->midi_dev) |
| 1047 | printk(KERN_WARNING "(Maps to MIDI dev #%d)\n", synth_devs[i]->midi_dev); |
| 1048 | } |
| 1049 | else |
| 1050 | { |
| 1051 | synth_open_mask |= (1 << i); |
| 1052 | if (synth_devs[i]->midi_dev) |
| 1053 | midi_opened[synth_devs[i]->midi_dev] = 1; |
| 1054 | } |
| 1055 | } |
| 1056 | |
| 1057 | seq_time = jiffies; |
| 1058 | |
| 1059 | prev_input_time = 0; |
| 1060 | prev_event_time = 0; |
| 1061 | |
| 1062 | if (seq_mode == SEQ_1 && (mode == OPEN_READ || mode == OPEN_READWRITE)) |
| 1063 | { |
| 1064 | /* |
| 1065 | * Initialize midi input devices |
| 1066 | */ |
| 1067 | |
| 1068 | for (i = 0; i < max_mididev; i++) |
| 1069 | if (!midi_opened[i] && midi_devs[i]) |
| 1070 | { |
| 1071 | if (!try_module_get(midi_devs[i]->owner)) |
| 1072 | continue; |
| 1073 | |
| 1074 | if ((retval = midi_devs[i]->open(i, mode, |
| 1075 | sequencer_midi_input, sequencer_midi_output)) >= 0) |
| 1076 | { |
| 1077 | midi_opened[i] = 1; |
| 1078 | } |
| 1079 | } |
| 1080 | } |
| 1081 | |
| 1082 | if (seq_mode == SEQ_2) { |
| 1083 | if (try_module_get(tmr->owner)) |
| 1084 | tmr->open(tmr_no, seq_mode); |
| 1085 | } |
| 1086 | |
| 1087 | init_waitqueue_head(&seq_sleeper); |
| 1088 | init_waitqueue_head(&midi_sleeper); |
| 1089 | output_threshold = SEQ_MAX_QUEUE / 2; |
| 1090 | |
| 1091 | return 0; |
| 1092 | } |
| 1093 | |
| 1094 | static void seq_drain_midi_queues(void) |
| 1095 | { |
| 1096 | int i, n; |
| 1097 | |
| 1098 | /* |
| 1099 | * Give the Midi drivers time to drain their output queues |
| 1100 | */ |
| 1101 | |
| 1102 | n = 1; |
| 1103 | |
| 1104 | while (!signal_pending(current) && n) |
| 1105 | { |
| 1106 | n = 0; |
| 1107 | |
| 1108 | for (i = 0; i < max_mididev; i++) |
| 1109 | if (midi_opened[i] && midi_written[i]) |
| 1110 | if (midi_devs[i]->buffer_status != NULL) |
| 1111 | if (midi_devs[i]->buffer_status(i)) |
| 1112 | n++; |
| 1113 | |
| 1114 | /* |
| 1115 | * Let's have a delay |
| 1116 | */ |
| 1117 | |
| 1118 | if (n) |
| 1119 | interruptible_sleep_on_timeout(&seq_sleeper, |
| 1120 | HZ/10); |
| 1121 | } |
| 1122 | } |
| 1123 | |
| 1124 | void sequencer_release(int dev, struct file *file) |
| 1125 | { |
| 1126 | int i; |
| 1127 | int mode = translate_mode(file); |
| 1128 | |
| 1129 | dev = dev >> 4; |
| 1130 | |
| 1131 | DEB(printk("sequencer_release(dev=%d)\n", dev)); |
| 1132 | |
| 1133 | /* |
| 1134 | * Wait until the queue is empty (if we don't have nonblock) |
| 1135 | */ |
| 1136 | |
| 1137 | if (mode != OPEN_READ && !(file->f_flags & O_NONBLOCK)) |
| 1138 | { |
| 1139 | while (!signal_pending(current) && qlen > 0) |
| 1140 | { |
| 1141 | seq_sync(); |
| 1142 | interruptible_sleep_on_timeout(&seq_sleeper, |
| 1143 | 3*HZ); |
| 1144 | /* Extra delay */ |
| 1145 | } |
| 1146 | } |
| 1147 | |
| 1148 | if (mode != OPEN_READ) |
| 1149 | seq_drain_midi_queues(); /* |
| 1150 | * Ensure the output queues are empty |
| 1151 | */ |
| 1152 | seq_reset(); |
| 1153 | if (mode != OPEN_READ) |
| 1154 | seq_drain_midi_queues(); /* |
| 1155 | * Flush the all notes off messages |
| 1156 | */ |
| 1157 | |
| 1158 | for (i = 0; i < max_synthdev; i++) |
| 1159 | { |
| 1160 | if (synth_open_mask & (1 << i)) /* |
| 1161 | * Actually opened |
| 1162 | */ |
| 1163 | if (synth_devs[i]) |
| 1164 | { |
| 1165 | synth_devs[i]->close(i); |
| 1166 | |
| 1167 | module_put(synth_devs[i]->owner); |
| 1168 | |
| 1169 | if (synth_devs[i]->midi_dev) |
| 1170 | midi_opened[synth_devs[i]->midi_dev] = 0; |
| 1171 | } |
| 1172 | } |
| 1173 | |
| 1174 | for (i = 0; i < max_mididev; i++) |
| 1175 | { |
| 1176 | if (midi_opened[i]) { |
| 1177 | midi_devs[i]->close(i); |
| 1178 | module_put(midi_devs[i]->owner); |
| 1179 | } |
| 1180 | } |
| 1181 | |
| 1182 | if (seq_mode == SEQ_2) { |
| 1183 | tmr->close(tmr_no); |
| 1184 | module_put(tmr->owner); |
| 1185 | } |
| 1186 | |
| 1187 | if (obsolete_api_used) |
| 1188 | printk(KERN_WARNING "/dev/music: Obsolete (4 byte) API was used by %s\n", current->comm); |
| 1189 | sequencer_busy = 0; |
| 1190 | } |
| 1191 | |
| 1192 | static int seq_sync(void) |
| 1193 | { |
| 1194 | if (qlen && !seq_playing && !signal_pending(current)) |
| 1195 | seq_startplay(); |
| 1196 | |
| 1197 | if (qlen > 0) |
| 1198 | interruptible_sleep_on_timeout(&seq_sleeper, HZ); |
| 1199 | return qlen; |
| 1200 | } |
| 1201 | |
| 1202 | static void midi_outc(int dev, unsigned char data) |
| 1203 | { |
| 1204 | /* |
| 1205 | * NOTE! Calls sleep(). Don't call this from interrupt. |
| 1206 | */ |
| 1207 | |
| 1208 | int n; |
| 1209 | unsigned long flags; |
| 1210 | |
| 1211 | /* |
| 1212 | * This routine sends one byte to the Midi channel. |
| 1213 | * If the output FIFO is full, it waits until there |
| 1214 | * is space in the queue |
| 1215 | */ |
| 1216 | |
| 1217 | n = 3 * HZ; /* Timeout */ |
| 1218 | |
| 1219 | spin_lock_irqsave(&lock,flags); |
| 1220 | while (n && !midi_devs[dev]->outputc(dev, data)) { |
| 1221 | interruptible_sleep_on_timeout(&seq_sleeper, HZ/25); |
| 1222 | n--; |
| 1223 | } |
| 1224 | spin_unlock_irqrestore(&lock,flags); |
| 1225 | } |
| 1226 | |
| 1227 | static void seq_reset(void) |
| 1228 | { |
| 1229 | /* |
| 1230 | * NOTE! Calls sleep(). Don't call this from interrupt. |
| 1231 | */ |
| 1232 | |
| 1233 | int i; |
| 1234 | int chn; |
| 1235 | unsigned long flags; |
| 1236 | |
| 1237 | sound_stop_timer(); |
| 1238 | |
| 1239 | seq_time = jiffies; |
| 1240 | prev_input_time = 0; |
| 1241 | prev_event_time = 0; |
| 1242 | |
| 1243 | qlen = qhead = qtail = 0; |
| 1244 | iqlen = iqhead = iqtail = 0; |
| 1245 | |
| 1246 | for (i = 0; i < max_synthdev; i++) |
| 1247 | if (synth_open_mask & (1 << i)) |
| 1248 | if (synth_devs[i]) |
| 1249 | synth_devs[i]->reset(i); |
| 1250 | |
| 1251 | if (seq_mode == SEQ_2) |
| 1252 | { |
| 1253 | for (chn = 0; chn < 16; chn++) |
| 1254 | for (i = 0; i < max_synthdev; i++) |
| 1255 | if (synth_open_mask & (1 << i)) |
| 1256 | if (synth_devs[i]) |
| 1257 | { |
| 1258 | synth_devs[i]->controller(i, chn, 123, 0); /* All notes off */ |
| 1259 | synth_devs[i]->controller(i, chn, 121, 0); /* Reset all ctl */ |
| 1260 | synth_devs[i]->bender(i, chn, 1 << 13); /* Bender off */ |
| 1261 | } |
| 1262 | } |
| 1263 | else /* seq_mode == SEQ_1 */ |
| 1264 | { |
| 1265 | for (i = 0; i < max_mididev; i++) |
| 1266 | if (midi_written[i]) /* |
| 1267 | * Midi used. Some notes may still be playing |
| 1268 | */ |
| 1269 | { |
| 1270 | /* |
| 1271 | * Sending just a ACTIVE SENSING message should be enough to stop all |
| 1272 | * playing notes. Since there are devices not recognizing the |
| 1273 | * active sensing, we have to send some all notes off messages also. |
| 1274 | */ |
| 1275 | midi_outc(i, 0xfe); |
| 1276 | |
| 1277 | for (chn = 0; chn < 16; chn++) |
| 1278 | { |
| 1279 | midi_outc(i, (unsigned char) (0xb0 + (chn & 0x0f))); /* control change */ |
| 1280 | midi_outc(i, 0x7b); /* All notes off */ |
| 1281 | midi_outc(i, 0); /* Dummy parameter */ |
| 1282 | } |
| 1283 | |
| 1284 | midi_devs[i]->close(i); |
| 1285 | |
| 1286 | midi_written[i] = 0; |
| 1287 | midi_opened[i] = 0; |
| 1288 | } |
| 1289 | } |
| 1290 | |
| 1291 | seq_playing = 0; |
| 1292 | |
| 1293 | spin_lock_irqsave(&lock,flags); |
| 1294 | |
| 1295 | if (waitqueue_active(&seq_sleeper)) { |
| 1296 | /* printk( "Sequencer Warning: Unexpected sleeping process - Waking up\n"); */ |
| 1297 | wake_up(&seq_sleeper); |
| 1298 | } |
| 1299 | spin_unlock_irqrestore(&lock,flags); |
| 1300 | } |
| 1301 | |
| 1302 | static void seq_panic(void) |
| 1303 | { |
| 1304 | /* |
| 1305 | * This routine is called by the application in case the user |
| 1306 | * wants to reset the system to the default state. |
| 1307 | */ |
| 1308 | |
| 1309 | seq_reset(); |
| 1310 | |
| 1311 | /* |
| 1312 | * Since some of the devices don't recognize the active sensing and |
| 1313 | * all notes off messages, we have to shut all notes manually. |
| 1314 | * |
| 1315 | * TO BE IMPLEMENTED LATER |
| 1316 | */ |
| 1317 | |
| 1318 | /* |
| 1319 | * Also return the controllers to their default states |
| 1320 | */ |
| 1321 | } |
| 1322 | |
| 1323 | int sequencer_ioctl(int dev, struct file *file, unsigned int cmd, void __user *arg) |
| 1324 | { |
| 1325 | int midi_dev, orig_dev, val, err; |
| 1326 | int mode = translate_mode(file); |
| 1327 | struct synth_info inf; |
| 1328 | struct seq_event_rec event_rec; |
| 1329 | unsigned long flags; |
| 1330 | int __user *p = arg; |
| 1331 | |
| 1332 | orig_dev = dev = dev >> 4; |
| 1333 | |
| 1334 | switch (cmd) |
| 1335 | { |
| 1336 | case SNDCTL_TMR_TIMEBASE: |
| 1337 | case SNDCTL_TMR_TEMPO: |
| 1338 | case SNDCTL_TMR_START: |
| 1339 | case SNDCTL_TMR_STOP: |
| 1340 | case SNDCTL_TMR_CONTINUE: |
| 1341 | case SNDCTL_TMR_METRONOME: |
| 1342 | case SNDCTL_TMR_SOURCE: |
| 1343 | if (seq_mode != SEQ_2) |
| 1344 | return -EINVAL; |
| 1345 | return tmr->ioctl(tmr_no, cmd, arg); |
| 1346 | |
| 1347 | case SNDCTL_TMR_SELECT: |
| 1348 | if (seq_mode != SEQ_2) |
| 1349 | return -EINVAL; |
| 1350 | if (get_user(pending_timer, p)) |
| 1351 | return -EFAULT; |
| 1352 | if (pending_timer < 0 || pending_timer >= num_sound_timers || sound_timer_devs[pending_timer] == NULL) |
| 1353 | { |
| 1354 | pending_timer = -1; |
| 1355 | return -EINVAL; |
| 1356 | } |
| 1357 | val = pending_timer; |
| 1358 | break; |
| 1359 | |
| 1360 | case SNDCTL_SEQ_PANIC: |
| 1361 | seq_panic(); |
| 1362 | return -EINVAL; |
| 1363 | |
| 1364 | case SNDCTL_SEQ_SYNC: |
| 1365 | if (mode == OPEN_READ) |
| 1366 | return 0; |
| 1367 | while (qlen > 0 && !signal_pending(current)) |
| 1368 | seq_sync(); |
| 1369 | return qlen ? -EINTR : 0; |
| 1370 | |
| 1371 | case SNDCTL_SEQ_RESET: |
| 1372 | seq_reset(); |
| 1373 | return 0; |
| 1374 | |
| 1375 | case SNDCTL_SEQ_TESTMIDI: |
| 1376 | if (__get_user(midi_dev, p)) |
| 1377 | return -EFAULT; |
| 1378 | if (midi_dev < 0 || midi_dev >= max_mididev || !midi_devs[midi_dev]) |
| 1379 | return -ENXIO; |
| 1380 | |
| 1381 | if (!midi_opened[midi_dev] && |
| 1382 | (err = midi_devs[midi_dev]->open(midi_dev, mode, sequencer_midi_input, |
| 1383 | sequencer_midi_output)) < 0) |
| 1384 | return err; |
| 1385 | midi_opened[midi_dev] = 1; |
| 1386 | return 0; |
| 1387 | |
| 1388 | case SNDCTL_SEQ_GETINCOUNT: |
| 1389 | if (mode == OPEN_WRITE) |
| 1390 | return 0; |
| 1391 | val = iqlen; |
| 1392 | break; |
| 1393 | |
| 1394 | case SNDCTL_SEQ_GETOUTCOUNT: |
| 1395 | if (mode == OPEN_READ) |
| 1396 | return 0; |
| 1397 | val = SEQ_MAX_QUEUE - qlen; |
| 1398 | break; |
| 1399 | |
| 1400 | case SNDCTL_SEQ_GETTIME: |
| 1401 | if (seq_mode == SEQ_2) |
| 1402 | return tmr->ioctl(tmr_no, cmd, arg); |
| 1403 | val = jiffies - seq_time; |
| 1404 | break; |
| 1405 | |
| 1406 | case SNDCTL_SEQ_CTRLRATE: |
| 1407 | /* |
| 1408 | * If *arg == 0, just return the current rate |
| 1409 | */ |
| 1410 | if (seq_mode == SEQ_2) |
| 1411 | return tmr->ioctl(tmr_no, cmd, arg); |
| 1412 | |
| 1413 | if (get_user(val, p)) |
| 1414 | return -EFAULT; |
| 1415 | if (val != 0) |
| 1416 | return -EINVAL; |
| 1417 | val = HZ; |
| 1418 | break; |
| 1419 | |
| 1420 | case SNDCTL_SEQ_RESETSAMPLES: |
| 1421 | case SNDCTL_SYNTH_REMOVESAMPLE: |
| 1422 | case SNDCTL_SYNTH_CONTROL: |
| 1423 | if (get_user(dev, p)) |
| 1424 | return -EFAULT; |
| 1425 | if (dev < 0 || dev >= num_synths || synth_devs[dev] == NULL) |
| 1426 | return -ENXIO; |
| 1427 | if (!(synth_open_mask & (1 << dev)) && !orig_dev) |
| 1428 | return -EBUSY; |
| 1429 | return synth_devs[dev]->ioctl(dev, cmd, arg); |
| 1430 | |
| 1431 | case SNDCTL_SEQ_NRSYNTHS: |
| 1432 | val = max_synthdev; |
| 1433 | break; |
| 1434 | |
| 1435 | case SNDCTL_SEQ_NRMIDIS: |
| 1436 | val = max_mididev; |
| 1437 | break; |
| 1438 | |
| 1439 | case SNDCTL_SYNTH_MEMAVL: |
| 1440 | if (get_user(dev, p)) |
| 1441 | return -EFAULT; |
| 1442 | if (dev < 0 || dev >= num_synths || synth_devs[dev] == NULL) |
| 1443 | return -ENXIO; |
| 1444 | if (!(synth_open_mask & (1 << dev)) && !orig_dev) |
| 1445 | return -EBUSY; |
| 1446 | val = synth_devs[dev]->ioctl(dev, cmd, arg); |
| 1447 | break; |
| 1448 | |
| 1449 | case SNDCTL_FM_4OP_ENABLE: |
| 1450 | if (get_user(dev, p)) |
| 1451 | return -EFAULT; |
| 1452 | if (dev < 0 || dev >= num_synths || synth_devs[dev] == NULL) |
| 1453 | return -ENXIO; |
| 1454 | if (!(synth_open_mask & (1 << dev))) |
| 1455 | return -ENXIO; |
| 1456 | synth_devs[dev]->ioctl(dev, cmd, arg); |
| 1457 | return 0; |
| 1458 | |
| 1459 | case SNDCTL_SYNTH_INFO: |
| 1460 | if (get_user(dev, &((struct synth_info __user *)arg)->device)) |
| 1461 | return -EFAULT; |
| 1462 | if (dev < 0 || dev >= max_synthdev) |
| 1463 | return -ENXIO; |
| 1464 | if (!(synth_open_mask & (1 << dev)) && !orig_dev) |
| 1465 | return -EBUSY; |
| 1466 | return synth_devs[dev]->ioctl(dev, cmd, arg); |
| 1467 | |
| 1468 | /* Like SYNTH_INFO but returns ID in the name field */ |
| 1469 | case SNDCTL_SYNTH_ID: |
| 1470 | if (get_user(dev, &((struct synth_info __user *)arg)->device)) |
| 1471 | return -EFAULT; |
| 1472 | if (dev < 0 || dev >= max_synthdev) |
| 1473 | return -ENXIO; |
| 1474 | if (!(synth_open_mask & (1 << dev)) && !orig_dev) |
| 1475 | return -EBUSY; |
| 1476 | memcpy(&inf, synth_devs[dev]->info, sizeof(inf)); |
| 1477 | strlcpy(inf.name, synth_devs[dev]->id, sizeof(inf.name)); |
| 1478 | inf.device = dev; |
| 1479 | return copy_to_user(arg, &inf, sizeof(inf))?-EFAULT:0; |
| 1480 | |
| 1481 | case SNDCTL_SEQ_OUTOFBAND: |
| 1482 | if (copy_from_user(&event_rec, arg, sizeof(event_rec))) |
| 1483 | return -EFAULT; |
| 1484 | spin_lock_irqsave(&lock,flags); |
| 1485 | play_event(event_rec.arr); |
| 1486 | spin_unlock_irqrestore(&lock,flags); |
| 1487 | return 0; |
| 1488 | |
| 1489 | case SNDCTL_MIDI_INFO: |
| 1490 | if (get_user(dev, &((struct midi_info __user *)arg)->device)) |
| 1491 | return -EFAULT; |
| 1492 | if (dev < 0 || dev >= max_mididev || !midi_devs[dev]) |
| 1493 | return -ENXIO; |
| 1494 | midi_devs[dev]->info.device = dev; |
| 1495 | return copy_to_user(arg, &midi_devs[dev]->info, sizeof(struct midi_info))?-EFAULT:0; |
| 1496 | |
| 1497 | case SNDCTL_SEQ_THRESHOLD: |
| 1498 | if (get_user(val, p)) |
| 1499 | return -EFAULT; |
| 1500 | if (val < 1) |
| 1501 | val = 1; |
| 1502 | if (val >= SEQ_MAX_QUEUE) |
| 1503 | val = SEQ_MAX_QUEUE - 1; |
| 1504 | output_threshold = val; |
| 1505 | return 0; |
| 1506 | |
| 1507 | case SNDCTL_MIDI_PRETIME: |
| 1508 | if (get_user(val, p)) |
| 1509 | return -EFAULT; |
| 1510 | if (val < 0) |
| 1511 | val = 0; |
| 1512 | val = (HZ * val) / 10; |
| 1513 | pre_event_timeout = val; |
| 1514 | break; |
| 1515 | |
| 1516 | default: |
| 1517 | if (mode == OPEN_READ) |
| 1518 | return -EIO; |
| 1519 | if (!synth_devs[0]) |
| 1520 | return -ENXIO; |
| 1521 | if (!(synth_open_mask & (1 << 0))) |
| 1522 | return -ENXIO; |
| 1523 | if (!synth_devs[0]->ioctl) |
| 1524 | return -EINVAL; |
| 1525 | return synth_devs[0]->ioctl(0, cmd, arg); |
| 1526 | } |
| 1527 | return put_user(val, p); |
| 1528 | } |
| 1529 | |
| 1530 | /* No kernel lock - we're using the global irq lock here */ |
| 1531 | unsigned int sequencer_poll(int dev, struct file *file, poll_table * wait) |
| 1532 | { |
| 1533 | unsigned long flags; |
| 1534 | unsigned int mask = 0; |
| 1535 | |
| 1536 | dev = dev >> 4; |
| 1537 | |
| 1538 | spin_lock_irqsave(&lock,flags); |
| 1539 | /* input */ |
| 1540 | poll_wait(file, &midi_sleeper, wait); |
| 1541 | if (iqlen) |
| 1542 | mask |= POLLIN | POLLRDNORM; |
| 1543 | |
| 1544 | /* output */ |
| 1545 | poll_wait(file, &seq_sleeper, wait); |
| 1546 | if ((SEQ_MAX_QUEUE - qlen) >= output_threshold) |
| 1547 | mask |= POLLOUT | POLLWRNORM; |
| 1548 | spin_unlock_irqrestore(&lock,flags); |
| 1549 | return mask; |
| 1550 | } |
| 1551 | |
| 1552 | |
| 1553 | void sequencer_timer(unsigned long dummy) |
| 1554 | { |
| 1555 | seq_startplay(); |
| 1556 | } |
| 1557 | EXPORT_SYMBOL(sequencer_timer); |
| 1558 | |
| 1559 | int note_to_freq(int note_num) |
| 1560 | { |
| 1561 | |
| 1562 | /* |
| 1563 | * This routine converts a midi note to a frequency (multiplied by 1000) |
| 1564 | */ |
| 1565 | |
| 1566 | int note, octave, note_freq; |
| 1567 | static int notes[] = |
| 1568 | { |
| 1569 | 261632, 277189, 293671, 311132, 329632, 349232, |
| 1570 | 369998, 391998, 415306, 440000, 466162, 493880 |
| 1571 | }; |
| 1572 | |
| 1573 | #define BASE_OCTAVE 5 |
| 1574 | |
| 1575 | octave = note_num / 12; |
| 1576 | note = note_num % 12; |
| 1577 | |
| 1578 | note_freq = notes[note]; |
| 1579 | |
| 1580 | if (octave < BASE_OCTAVE) |
| 1581 | note_freq >>= (BASE_OCTAVE - octave); |
| 1582 | else if (octave > BASE_OCTAVE) |
| 1583 | note_freq <<= (octave - BASE_OCTAVE); |
| 1584 | |
| 1585 | /* |
| 1586 | * note_freq >>= 1; |
| 1587 | */ |
| 1588 | |
| 1589 | return note_freq; |
| 1590 | } |
| 1591 | EXPORT_SYMBOL(note_to_freq); |
| 1592 | |
| 1593 | unsigned long compute_finetune(unsigned long base_freq, int bend, int range, |
| 1594 | int vibrato_cents) |
| 1595 | { |
| 1596 | unsigned long amount; |
| 1597 | int negative, semitones, cents, multiplier = 1; |
| 1598 | |
| 1599 | if (!bend) |
| 1600 | return base_freq; |
| 1601 | if (!range) |
| 1602 | return base_freq; |
| 1603 | |
| 1604 | if (!base_freq) |
| 1605 | return base_freq; |
| 1606 | |
| 1607 | if (range >= 8192) |
| 1608 | range = 8192; |
| 1609 | |
| 1610 | bend = bend * range / 8192; /* Convert to cents */ |
| 1611 | bend += vibrato_cents; |
| 1612 | |
| 1613 | if (!bend) |
| 1614 | return base_freq; |
| 1615 | |
| 1616 | negative = bend < 0 ? 1 : 0; |
| 1617 | |
| 1618 | if (bend < 0) |
| 1619 | bend *= -1; |
| 1620 | if (bend > range) |
| 1621 | bend = range; |
| 1622 | |
| 1623 | /* |
| 1624 | if (bend > 2399) |
| 1625 | bend = 2399; |
| 1626 | */ |
| 1627 | while (bend > 2399) |
| 1628 | { |
| 1629 | multiplier *= 4; |
| 1630 | bend -= 2400; |
| 1631 | } |
| 1632 | |
| 1633 | semitones = bend / 100; |
| 1634 | cents = bend % 100; |
| 1635 | |
| 1636 | amount = (int) (semitone_tuning[semitones] * multiplier * cent_tuning[cents]) / 10000; |
| 1637 | |
| 1638 | if (negative) |
| 1639 | return (base_freq * 10000) / amount; /* Bend down */ |
| 1640 | else |
| 1641 | return (base_freq * amount) / 10000; /* Bend up */ |
| 1642 | } |
| 1643 | EXPORT_SYMBOL(compute_finetune); |
| 1644 | |
| 1645 | void sequencer_init(void) |
| 1646 | { |
| 1647 | if (sequencer_ok) |
| 1648 | return; |
| 1649 | queue = vmalloc(SEQ_MAX_QUEUE * EV_SZ); |
| 1650 | if (queue == NULL) |
| 1651 | { |
| 1652 | printk(KERN_ERR "sequencer: Can't allocate memory for sequencer output queue\n"); |
| 1653 | return; |
| 1654 | } |
| 1655 | iqueue = vmalloc(SEQ_MAX_QUEUE * IEV_SZ); |
| 1656 | if (iqueue == NULL) |
| 1657 | { |
| 1658 | printk(KERN_ERR "sequencer: Can't allocate memory for sequencer input queue\n"); |
| 1659 | vfree(queue); |
| 1660 | return; |
| 1661 | } |
| 1662 | sequencer_ok = 1; |
| 1663 | } |
| 1664 | EXPORT_SYMBOL(sequencer_init); |
| 1665 | |
| 1666 | void sequencer_unload(void) |
| 1667 | { |
| 1668 | vfree(queue); |
| 1669 | vfree(iqueue); |
| 1670 | queue = iqueue = NULL; |
| 1671 | } |