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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / core / seq / seq_midi_emul.c
CommitLineData
1da177e4
LT		 1/*
2 * GM/GS/XG midi module.
3 *
4 * Copyright (C) 1999 Steve Ratcliffe
5 *
6 * Based on awe_wave.c by Takashi Iwai
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23/*
24 * This module is used to keep track of the current midi state.
25 * It can be used for drivers that are required to emulate midi when
26 * the hardware doesn't.
27 *
28 * It was written for a AWE64 driver, but there should be no AWE specific
29 * code in here. If there is it should be reported as a bug.
30 */
31
1da177e4
LT		 32#include <linux/init.h>
33#include <linux/slab.h>
34#include <linux/string.h>
da155d5b 35#include <linux/module.h>
1da177e4
LT		 36#include <sound/core.h>
37#include <sound/seq_kernel.h>
38#include <sound/seq_midi_emul.h>
39#include <sound/initval.h>
40#include <sound/asoundef.h>
41
42MODULE_AUTHOR("Takashi Iwai / Steve Ratcliffe");
43MODULE_DESCRIPTION("Advanced Linux Sound Architecture sequencer MIDI emulation.");
44MODULE_LICENSE("GPL");
45
46/* Prototypes for static functions */
c7e0b5bf
TI		 47static void note_off(struct snd_midi_op *ops, void *drv,
48 struct snd_midi_channel *chan,
49 int note, int vel);
50static void do_control(struct snd_midi_op *ops, void *private,
51 struct snd_midi_channel_set *chset,
52 struct snd_midi_channel *chan,
1da177e4 53 int control, int value);
c7e0b5bf
TI		 54static void rpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
55 struct snd_midi_channel_set *chset);
56static void nrpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
57 struct snd_midi_channel_set *chset);
58static void sysex(struct snd_midi_op *ops, void *private, unsigned char *sysex,
59 int len, struct snd_midi_channel_set *chset);
60static void all_sounds_off(struct snd_midi_op *ops, void *private,
61 struct snd_midi_channel *chan);
62static void all_notes_off(struct snd_midi_op *ops, void *private,
63 struct snd_midi_channel *chan);
64static void snd_midi_reset_controllers(struct snd_midi_channel *chan);
65static void reset_all_channels(struct snd_midi_channel_set *chset);
1da177e4
LT		 66
67
68/*
69 * Process an event in a driver independent way. This means dealing
70 * with RPN, NRPN, SysEx etc that are defined for common midi applications
71 * such as GM, GS and XG.
72 * There modes that this module will run in are:
73 * Generic MIDI - no interpretation at all, it will just save current values
3a4fa0a2 74 * of controllers etc.
1da177e4
LT		 75 * GM - You can use all gm_ prefixed elements of chan. Controls, RPN, NRPN,
76 * SysEx will be interpreded as defined in General Midi.
77 * GS - You can use all gs_ prefixed elements of chan. Codes for GS will be
78 * interpreted.
79 * XG - You can use all xg_ prefixed elements of chan. Codes for XG will
80 * be interpreted.
81 */
82void
c7e0b5bf
TI		 83snd_midi_process_event(struct snd_midi_op *ops,
84 struct snd_seq_event *ev,
85 struct snd_midi_channel_set *chanset)
1da177e4 86{
c7e0b5bf 87 struct snd_midi_channel *chan;
1da177e4
LT		 88 void *drv;
89 int dest_channel = 0;
90
91 if (ev == NULL || chanset == NULL) {
92 snd_printd("ev or chanbase NULL (snd_midi_process_event)\n");
93 return;
94 }
95 if (chanset->channels == NULL)
96 return;
97
98 if (snd_seq_ev_is_channel_type(ev)) {
99 dest_channel = ev->data.note.channel;
100 if (dest_channel >= chanset->max_channels) {
c7e0b5bf
TI		 101 snd_printd("dest channel is %d, max is %d\n",
102 dest_channel, chanset->max_channels);
1da177e4
LT		 103 return;
104 }
105 }
106
107 chan = chanset->channels + dest_channel;
108 drv = chanset->private_data;
109
110 /* EVENT_NOTE should be processed before queued */
111 if (ev->type == SNDRV_SEQ_EVENT_NOTE)
112 return;
113
114 /* Make sure that we don't have a note on that should really be
115 * a note off */
116 if (ev->type == SNDRV_SEQ_EVENT_NOTEON && ev->data.note.velocity == 0)
117 ev->type = SNDRV_SEQ_EVENT_NOTEOFF;
118
119 /* Make sure the note is within array range */
120 if (ev->type == SNDRV_SEQ_EVENT_NOTEON ||
121 ev->type == SNDRV_SEQ_EVENT_NOTEOFF ||
122 ev->type == SNDRV_SEQ_EVENT_KEYPRESS) {
123 if (ev->data.note.note >= 128)
124 return;
125 }
126
127 switch (ev->type) {
128 case SNDRV_SEQ_EVENT_NOTEON:
129 if (chan->note[ev->data.note.note] & SNDRV_MIDI_NOTE_ON) {
130 if (ops->note_off)
131 ops->note_off(drv, ev->data.note.note, 0, chan);
132 }
133 chan->note[ev->data.note.note] = SNDRV_MIDI_NOTE_ON;
134 if (ops->note_on)
135 ops->note_on(drv, ev->data.note.note, ev->data.note.velocity, chan);
136 break;
137 case SNDRV_SEQ_EVENT_NOTEOFF:
138 if (! (chan->note[ev->data.note.note] & SNDRV_MIDI_NOTE_ON))
139 break;
140 if (ops->note_off)
141 note_off(ops, drv, chan, ev->data.note.note, ev->data.note.velocity);
142 break;
143 case SNDRV_SEQ_EVENT_KEYPRESS:
144 if (ops->key_press)
145 ops->key_press(drv, ev->data.note.note, ev->data.note.velocity, chan);
146 break;
147 case SNDRV_SEQ_EVENT_CONTROLLER:
148 do_control(ops, drv, chanset, chan,
149 ev->data.control.param, ev->data.control.value);
150 break;
151 case SNDRV_SEQ_EVENT_PGMCHANGE:
152 chan->midi_program = ev->data.control.value;
153 break;
154 case SNDRV_SEQ_EVENT_PITCHBEND:
155 chan->midi_pitchbend = ev->data.control.value;
156 if (ops->control)
157 ops->control(drv, MIDI_CTL_PITCHBEND, chan);
158 break;
159 case SNDRV_SEQ_EVENT_CHANPRESS:
160 chan->midi_pressure = ev->data.control.value;
161 if (ops->control)
162 ops->control(drv, MIDI_CTL_CHAN_PRESSURE, chan);
163 break;
164 case SNDRV_SEQ_EVENT_CONTROL14:
165 /* Best guess is that this is any of the 14 bit controller values */
166 if (ev->data.control.param < 32) {
167 /* set low part first */
168 chan->control[ev->data.control.param + 32] =
169 ev->data.control.value & 0x7f;
170 do_control(ops, drv, chanset, chan,
171 ev->data.control.param,
172 ((ev->data.control.value>>7) & 0x7f));
173 } else
174 do_control(ops, drv, chanset, chan,
175 ev->data.control.param,
176 ev->data.control.value);
177 break;
178 case SNDRV_SEQ_EVENT_NONREGPARAM:
3a4fa0a2 179 /* Break it back into its controller values */
1da177e4
LT		 180 chan->param_type = SNDRV_MIDI_PARAM_TYPE_NONREGISTERED;
181 chan->control[MIDI_CTL_MSB_DATA_ENTRY]
182 = (ev->data.control.value >> 7) & 0x7f;
183 chan->control[MIDI_CTL_LSB_DATA_ENTRY]
184 = ev->data.control.value & 0x7f;
185 chan->control[MIDI_CTL_NONREG_PARM_NUM_MSB]
186 = (ev->data.control.param >> 7) & 0x7f;
187 chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB]
188 = ev->data.control.param & 0x7f;
189 nrpn(ops, drv, chan, chanset);
190 break;
191 case SNDRV_SEQ_EVENT_REGPARAM:
3a4fa0a2 192 /* Break it back into its controller values */
1da177e4
LT		 193 chan->param_type = SNDRV_MIDI_PARAM_TYPE_REGISTERED;
194 chan->control[MIDI_CTL_MSB_DATA_ENTRY]
195 = (ev->data.control.value >> 7) & 0x7f;
196 chan->control[MIDI_CTL_LSB_DATA_ENTRY]
197 = ev->data.control.value & 0x7f;
198 chan->control[MIDI_CTL_REGIST_PARM_NUM_MSB]
199 = (ev->data.control.param >> 7) & 0x7f;
200 chan->control[MIDI_CTL_REGIST_PARM_NUM_LSB]
201 = ev->data.control.param & 0x7f;
202 rpn(ops, drv, chan, chanset);
203 break;
204 case SNDRV_SEQ_EVENT_SYSEX:
205 if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE) {
206 unsigned char sysexbuf[64];
207 int len;
208 len = snd_seq_expand_var_event(ev, sizeof(sysexbuf), sysexbuf, 1, 0);
209 if (len > 0)
210 sysex(ops, drv, sysexbuf, len, chanset);
211 }
212 break;
213 case SNDRV_SEQ_EVENT_SONGPOS:
214 case SNDRV_SEQ_EVENT_SONGSEL:
215 case SNDRV_SEQ_EVENT_CLOCK:
216 case SNDRV_SEQ_EVENT_START:
217 case SNDRV_SEQ_EVENT_CONTINUE:
218 case SNDRV_SEQ_EVENT_STOP:
219 case SNDRV_SEQ_EVENT_QFRAME:
220 case SNDRV_SEQ_EVENT_TEMPO:
221 case SNDRV_SEQ_EVENT_TIMESIGN:
222 case SNDRV_SEQ_EVENT_KEYSIGN:
223 goto not_yet;
224 case SNDRV_SEQ_EVENT_SENSING:
225 break;
226 case SNDRV_SEQ_EVENT_CLIENT_START:
227 case SNDRV_SEQ_EVENT_CLIENT_EXIT:
228 case SNDRV_SEQ_EVENT_CLIENT_CHANGE:
229 case SNDRV_SEQ_EVENT_PORT_START:
230 case SNDRV_SEQ_EVENT_PORT_EXIT:
231 case SNDRV_SEQ_EVENT_PORT_CHANGE:
1da177e4
LT		 232 case SNDRV_SEQ_EVENT_ECHO:
233 not_yet:
234 default:
235 /*snd_printd("Unimplemented event %d\n", ev->type);*/
236 break;
237 }
238}
239
240
241/*
242 * release note
243 */
244static void
c7e0b5bf
TI		 245note_off(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
246 int note, int vel)
1da177e4
LT		 247{
248 if (chan->gm_hold) {
249 /* Hold this note until pedal is turned off */
250 chan->note[note] |= SNDRV_MIDI_NOTE_RELEASED;
251 } else if (chan->note[note] & SNDRV_MIDI_NOTE_SOSTENUTO) {
252 /* Mark this note as release; it will be turned off when sostenuto
253 * is turned off */
254 chan->note[note] |= SNDRV_MIDI_NOTE_RELEASED;
255 } else {
256 chan->note[note] = 0;
257 if (ops->note_off)
258 ops->note_off(drv, note, vel, chan);
259 }
260}
261
262/*
3a4fa0a2 263 * Do all driver independent operations for this controller and pass
1da177e4
LT		 264 * events that need to take place immediately to the driver.
265 */
266static void
c7e0b5bf
TI		 267do_control(struct snd_midi_op *ops, void *drv, struct snd_midi_channel_set *chset,
268 struct snd_midi_channel *chan, int control, int value)
1da177e4
LT		 269{
270 int i;
271
272 /* Switches */
273 if ((control >=64 && control <=69) || (control >= 80 && control <= 83)) {
274 /* These are all switches; either off or on so set to 0 or 127 */
275 value = (value >= 64)? 127: 0;
276 }
277 chan->control[control] = value;
278
279 switch (control) {
280 case MIDI_CTL_SUSTAIN:
281 if (value == 0) {
282 /* Sustain has been released, turn off held notes */
283 for (i = 0; i < 128; i++) {
284 if (chan->note[i] & SNDRV_MIDI_NOTE_RELEASED) {
285 chan->note[i] = SNDRV_MIDI_NOTE_OFF;
286 if (ops->note_off)
287 ops->note_off(drv, i, 0, chan);
288 }
289 }
290 }
291 break;
292 case MIDI_CTL_PORTAMENTO:
293 break;
294 case MIDI_CTL_SOSTENUTO:
295 if (value) {
296 /* Mark each note that is currently held down */
297 for (i = 0; i < 128; i++) {
298 if (chan->note[i] & SNDRV_MIDI_NOTE_ON)
299 chan->note[i] |= SNDRV_MIDI_NOTE_SOSTENUTO;
300 }
301 } else {
302 /* release all notes that were held */
303 for (i = 0; i < 128; i++) {
304 if (chan->note[i] & SNDRV_MIDI_NOTE_SOSTENUTO) {
305 chan->note[i] &= ~SNDRV_MIDI_NOTE_SOSTENUTO;
306 if (chan->note[i] & SNDRV_MIDI_NOTE_RELEASED) {
307 chan->note[i] = SNDRV_MIDI_NOTE_OFF;
308 if (ops->note_off)
309 ops->note_off(drv, i, 0, chan);
310 }
311 }
312 }
313 }
314 break;
315 case MIDI_CTL_MSB_DATA_ENTRY:
316 chan->control[MIDI_CTL_LSB_DATA_ENTRY] = 0;
317 /* go through here */
318 case MIDI_CTL_LSB_DATA_ENTRY:
319 if (chan->param_type == SNDRV_MIDI_PARAM_TYPE_REGISTERED)
320 rpn(ops, drv, chan, chset);
321 else
322 nrpn(ops, drv, chan, chset);
323 break;
324 case MIDI_CTL_REGIST_PARM_NUM_LSB:
325 case MIDI_CTL_REGIST_PARM_NUM_MSB:
326 chan->param_type = SNDRV_MIDI_PARAM_TYPE_REGISTERED;
327 break;
328 case MIDI_CTL_NONREG_PARM_NUM_LSB:
329 case MIDI_CTL_NONREG_PARM_NUM_MSB:
330 chan->param_type = SNDRV_MIDI_PARAM_TYPE_NONREGISTERED;
331 break;
332
333 case MIDI_CTL_ALL_SOUNDS_OFF:
334 all_sounds_off(ops, drv, chan);
335 break;
336
337 case MIDI_CTL_ALL_NOTES_OFF:
338 all_notes_off(ops, drv, chan);
339 break;
340
341 case MIDI_CTL_MSB_BANK:
342 if (chset->midi_mode == SNDRV_MIDI_MODE_XG) {
343 if (value == 127)
344 chan->drum_channel = 1;
345 else
346 chan->drum_channel = 0;
347 }
348 break;
349 case MIDI_CTL_LSB_BANK:
350 break;
351
352 case MIDI_CTL_RESET_CONTROLLERS:
353 snd_midi_reset_controllers(chan);
354 break;
355
356 case MIDI_CTL_SOFT_PEDAL:
357 case MIDI_CTL_LEGATO_FOOTSWITCH:
358 case MIDI_CTL_HOLD2:
359 case MIDI_CTL_SC1_SOUND_VARIATION:
360 case MIDI_CTL_SC2_TIMBRE:
361 case MIDI_CTL_SC3_RELEASE_TIME:
362 case MIDI_CTL_SC4_ATTACK_TIME:
363 case MIDI_CTL_SC5_BRIGHTNESS:
364 case MIDI_CTL_E1_REVERB_DEPTH:
365 case MIDI_CTL_E2_TREMOLO_DEPTH:
366 case MIDI_CTL_E3_CHORUS_DEPTH:
367 case MIDI_CTL_E4_DETUNE_DEPTH:
368 case MIDI_CTL_E5_PHASER_DEPTH:
369 goto notyet;
370 notyet:
371 default:
372 if (ops->control)
373 ops->control(drv, control, chan);
374 break;
375 }
376}
377
378
379/*
380 * initialize the MIDI status
381 */
382void
c7e0b5bf 383snd_midi_channel_set_clear(struct snd_midi_channel_set *chset)
1da177e4
LT		 384{
385 int i;
386
387 chset->midi_mode = SNDRV_MIDI_MODE_GM;
388 chset->gs_master_volume = 127;
389
390 for (i = 0; i < chset->max_channels; i++) {
c7e0b5bf 391 struct snd_midi_channel *chan = chset->channels + i;
1da177e4
LT		 392 memset(chan->note, 0, sizeof(chan->note));
393
394 chan->midi_aftertouch = 0;
395 chan->midi_pressure = 0;
396 chan->midi_program = 0;
397 chan->midi_pitchbend = 0;
398 snd_midi_reset_controllers(chan);
399 chan->gm_rpn_pitch_bend_range = 256; /* 2 semitones */
400 chan->gm_rpn_fine_tuning = 0;
401 chan->gm_rpn_coarse_tuning = 0;
402
403 if (i == 9)
404 chan->drum_channel = 1;
405 else
406 chan->drum_channel = 0;
407 }
408}
409
410/*
411 * Process a rpn message.
412 */
413static void
c7e0b5bf
TI		 414rpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
415 struct snd_midi_channel_set *chset)
1da177e4
LT		 416{
417 int type;
418 int val;
419
420 if (chset->midi_mode != SNDRV_MIDI_MODE_NONE) {
421 type = (chan->control[MIDI_CTL_REGIST_PARM_NUM_MSB] << 8) |
422 chan->control[MIDI_CTL_REGIST_PARM_NUM_LSB];
423 val = (chan->control[MIDI_CTL_MSB_DATA_ENTRY] << 7) |
424 chan->control[MIDI_CTL_LSB_DATA_ENTRY];
425
426 switch (type) {
427 case 0x0000: /* Pitch bend sensitivity */
428 /* MSB only / 1 semitone per 128 */
429 chan->gm_rpn_pitch_bend_range = val;
430 break;
431
432 case 0x0001: /* fine tuning: */
433 /* MSB/LSB, 8192=center, 100/8192 cent step */
434 chan->gm_rpn_fine_tuning = val - 8192;
435 break;
436
437 case 0x0002: /* coarse tuning */
438 /* MSB only / 8192=center, 1 semitone per 128 */
439 chan->gm_rpn_coarse_tuning = val - 8192;
440 break;
441
442 case 0x7F7F: /* "lock-in" RPN */
443 /* ignored */
444 break;
445 }
446 }
447 /* should call nrpn or rpn callback here.. */
448}
449
450/*
451 * Process an nrpn message.
452 */
453static void
c7e0b5bf
TI		 454nrpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
455 struct snd_midi_channel_set *chset)
1da177e4
LT		 456{
457 /* parse XG NRPNs here if possible */
458 if (ops->nrpn)
459 ops->nrpn(drv, chan, chset);
460}
461
462
463/*
464 * convert channel parameter in GS sysex
465 */
466static int
467get_channel(unsigned char cmd)
468{
469 int p = cmd & 0x0f;
470 if (p == 0)
471 p = 9;
472 else if (p < 10)
473 p--;
474 return p;
475}
476
477
478/*
479 * Process a sysex message.
480 */
481static void
c7e0b5bf
TI		 482sysex(struct snd_midi_op *ops, void *private, unsigned char *buf, int len,
483 struct snd_midi_channel_set *chset)
1da177e4
LT		 484{
485 /* GM on */
486 static unsigned char gm_on_macro[] = {
487 0x7e,0x7f,0x09,0x01,
488 };
489 /* XG on */
490 static unsigned char xg_on_macro[] = {
491 0x43,0x10,0x4c,0x00,0x00,0x7e,0x00,
492 };
493 /* GS prefix
494 * drum channel: XX=0x1?(channel), YY=0x15, ZZ=on/off
495 * reverb mode: XX=0x01, YY=0x30, ZZ=0-7
496 * chorus mode: XX=0x01, YY=0x38, ZZ=0-7
497 * master vol: XX=0x00, YY=0x04, ZZ=0-127
498 */
499 static unsigned char gs_pfx_macro[] = {
500 0x41,0x10,0x42,0x12,0x40,/*XX,YY,ZZ*/
501 };
502
503 int parsed = SNDRV_MIDI_SYSEX_NOT_PARSED;
504
505 if (len <= 0 || buf[0] != 0xf0)
506 return;
507 /* skip first byte */
508 buf++;
509 len--;
510
511 /* GM on */
512 if (len >= (int)sizeof(gm_on_macro) &&
513 memcmp(buf, gm_on_macro, sizeof(gm_on_macro)) == 0) {
514 if (chset->midi_mode != SNDRV_MIDI_MODE_GS &&
515 chset->midi_mode != SNDRV_MIDI_MODE_XG) {
516 chset->midi_mode = SNDRV_MIDI_MODE_GM;
517 reset_all_channels(chset);
518 parsed = SNDRV_MIDI_SYSEX_GM_ON;
519 }
520 }
521
522 /* GS macros */
523 else if (len >= 8 &&
524 memcmp(buf, gs_pfx_macro, sizeof(gs_pfx_macro)) == 0) {
525 if (chset->midi_mode != SNDRV_MIDI_MODE_GS &&
526 chset->midi_mode != SNDRV_MIDI_MODE_XG)
527 chset->midi_mode = SNDRV_MIDI_MODE_GS;
528
529 if (buf[5] == 0x00 && buf[6] == 0x7f && buf[7] == 0x00) {
530 /* GS reset */
531 parsed = SNDRV_MIDI_SYSEX_GS_RESET;
532 reset_all_channels(chset);
533 }
534
535 else if ((buf[5] & 0xf0) == 0x10 && buf[6] == 0x15) {
536 /* drum pattern */
537 int p = get_channel(buf[5]);
538 if (p < chset->max_channels) {
539 parsed = SNDRV_MIDI_SYSEX_GS_DRUM_CHANNEL;
540 if (buf[7])
541 chset->channels[p].drum_channel = 1;
542 else
543 chset->channels[p].drum_channel = 0;
544 }
545
546 } else if ((buf[5] & 0xf0) == 0x10 && buf[6] == 0x21) {
547 /* program */
548 int p = get_channel(buf[5]);
549 if (p < chset->max_channels &&
550 ! chset->channels[p].drum_channel) {
551 parsed = SNDRV_MIDI_SYSEX_GS_DRUM_CHANNEL;
552 chset->channels[p].midi_program = buf[7];
553 }
554
555 } else if (buf[5] == 0x01 && buf[6] == 0x30) {
556 /* reverb mode */
557 parsed = SNDRV_MIDI_SYSEX_GS_REVERB_MODE;
558 chset->gs_reverb_mode = buf[7];
559
560 } else if (buf[5] == 0x01 && buf[6] == 0x38) {
561 /* chorus mode */
562 parsed = SNDRV_MIDI_SYSEX_GS_CHORUS_MODE;
563 chset->gs_chorus_mode = buf[7];
564
565 } else if (buf[5] == 0x00 && buf[6] == 0x04) {
566 /* master volume */
567 parsed = SNDRV_MIDI_SYSEX_GS_MASTER_VOLUME;
568 chset->gs_master_volume = buf[7];
569
570 }
571 }
572
573 /* XG on */
574 else if (len >= (int)sizeof(xg_on_macro) &&
575 memcmp(buf, xg_on_macro, sizeof(xg_on_macro)) == 0) {
576 int i;
577 chset->midi_mode = SNDRV_MIDI_MODE_XG;
578 parsed = SNDRV_MIDI_SYSEX_XG_ON;
579 /* reset CC#0 for drums */
580 for (i = 0; i < chset->max_channels; i++) {
581 if (chset->channels[i].drum_channel)
582 chset->channels[i].control[MIDI_CTL_MSB_BANK] = 127;
583 else
584 chset->channels[i].control[MIDI_CTL_MSB_BANK] = 0;
585 }
586 }
587
588 if (ops->sysex)
589 ops->sysex(private, buf - 1, len + 1, parsed, chset);
590}
591
592/*
593 * all sound off
594 */
595static void
c7e0b5bf 596all_sounds_off(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan)
1da177e4
LT		 597{
598 int n;
599
600 if (! ops->note_terminate)
601 return;
602 for (n = 0; n < 128; n++) {
603 if (chan->note[n]) {
604 ops->note_terminate(drv, n, chan);
605 chan->note[n] = 0;
606 }
607 }
608}
609
610/*
611 * all notes off
612 */
613static void
c7e0b5bf 614all_notes_off(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan)
1da177e4
LT		 615{
616 int n;
617
618 if (! ops->note_off)
619 return;
620 for (n = 0; n < 128; n++) {
621 if (chan->note[n] == SNDRV_MIDI_NOTE_ON)
622 note_off(ops, drv, chan, n, 0);
623 }
624}
625
626/*
627 * Initialise a single midi channel control block.
628 */
c7e0b5bf 629static void snd_midi_channel_init(struct snd_midi_channel *p, int n)
1da177e4
LT		 630{
631 if (p == NULL)
632 return;
633
c7e0b5bf 634 memset(p, 0, sizeof(struct snd_midi_channel));
1da177e4
LT		 635 p->private = NULL;
636 p->number = n;
637
638 snd_midi_reset_controllers(p);
639 p->gm_rpn_pitch_bend_range = 256; /* 2 semitones */
640 p->gm_rpn_fine_tuning = 0;
641 p->gm_rpn_coarse_tuning = 0;
642
643 if (n == 9)
644 p->drum_channel = 1; /* Default ch 10 as drums */
645}
646
647/*
648 * Allocate and initialise a set of midi channel control blocks.
649 */
c7e0b5bf 650static struct snd_midi_channel *snd_midi_channel_init_set(int n)
1da177e4 651{
c7e0b5bf 652 struct snd_midi_channel *chan;
1da177e4
LT		 653 int i;
654
c7e0b5bf 655 chan = kmalloc(n * sizeof(struct snd_midi_channel), GFP_KERNEL);
1da177e4
LT		 656 if (chan) {
657 for (i = 0; i < n; i++)
658 snd_midi_channel_init(chan+i, i);
659 }
660
661 return chan;
662}
663
664/*
665 * reset all midi channels
666 */
667static void
c7e0b5bf 668reset_all_channels(struct snd_midi_channel_set *chset)
1da177e4
LT		 669{
670 int ch;
671 for (ch = 0; ch < chset->max_channels; ch++) {
c7e0b5bf 672 struct snd_midi_channel *chan = chset->channels + ch;
1da177e4
LT		 673 snd_midi_reset_controllers(chan);
674 chan->gm_rpn_pitch_bend_range = 256; /* 2 semitones */
675 chan->gm_rpn_fine_tuning = 0;
676 chan->gm_rpn_coarse_tuning = 0;
677
678 if (ch == 9)
679 chan->drum_channel = 1;
680 else
681 chan->drum_channel = 0;
682 }
683}
684
685
686/*
687 * Allocate and initialise a midi channel set.
688 */
c7e0b5bf 689struct snd_midi_channel_set *snd_midi_channel_alloc_set(int n)
1da177e4 690{
c7e0b5bf 691 struct snd_midi_channel_set *chset;
1da177e4
LT		 692
693 chset = kmalloc(sizeof(*chset), GFP_KERNEL);
694 if (chset) {
695 chset->channels = snd_midi_channel_init_set(n);
696 chset->private_data = NULL;
697 chset->max_channels = n;
698 }
699 return chset;
700}
701
702/*
703 * Reset the midi controllers on a particular channel to default values.
704 */
c7e0b5bf 705static void snd_midi_reset_controllers(struct snd_midi_channel *chan)
1da177e4
LT		 706{
707 memset(chan->control, 0, sizeof(chan->control));
708 chan->gm_volume = 127;
709 chan->gm_expression = 127;
710 chan->gm_pan = 64;
711}
712
713
714/*
715 * Free a midi channel set.
716 */
c7e0b5bf 717void snd_midi_channel_free_set(struct snd_midi_channel_set *chset)
1da177e4
LT		 718{
719 if (chset == NULL)
720 return;
721 kfree(chset->channels);
722 kfree(chset);
723}
724
725static int __init alsa_seq_midi_emul_init(void)
726{
727 return 0;
728}
729
730static void __exit alsa_seq_midi_emul_exit(void)
731{
732}
733
734module_init(alsa_seq_midi_emul_init)
735module_exit(alsa_seq_midi_emul_exit)
736
737EXPORT_SYMBOL(snd_midi_process_event);
738EXPORT_SYMBOL(snd_midi_channel_set_clear);
739EXPORT_SYMBOL(snd_midi_channel_alloc_set);
740EXPORT_SYMBOL(snd_midi_channel_free_set);
kernel source for telekom puls (alcatel/mediatek)