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1da177e4 LT |
1 | /* |
2 | * Interface for OSS sequencer emulation | |
3 | * | |
4 | * Copyright (C) 1999 Takashi Iwai <tiwai@suse.de> | |
5 | * | |
6 | * This program 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 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program 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 this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | * Changes | |
21 | * 19990227 Steve Ratcliffe Made separate file and merged in latest | |
22 | * midi emulation. | |
23 | */ | |
24 | ||
25 | #include <sound/driver.h> | |
26 | ||
27 | #ifdef CONFIG_SND_SEQUENCER_OSS | |
28 | ||
29 | #include <asm/uaccess.h> | |
30 | #include <sound/core.h> | |
31 | #include "emux_voice.h" | |
32 | #include <sound/asoundef.h> | |
33 | ||
34 | static int snd_emux_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure); | |
35 | static int snd_emux_close_seq_oss(snd_seq_oss_arg_t *arg); | |
36 | static int snd_emux_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd, unsigned long ioarg); | |
37 | static int snd_emux_load_patch_seq_oss(snd_seq_oss_arg_t *arg, int format, const char __user *buf, int offs, int count); | |
38 | static int snd_emux_reset_seq_oss(snd_seq_oss_arg_t *arg); | |
39 | static int snd_emux_event_oss_input(snd_seq_event_t *ev, int direct, void *private, int atomic, int hop); | |
40 | static void reset_port_mode(snd_emux_port_t *port, int midi_mode); | |
41 | static void emuspec_control(snd_emux_t *emu, snd_emux_port_t *port, int cmd, unsigned char *event, int atomic, int hop); | |
42 | static void gusspec_control(snd_emux_t *emu, snd_emux_port_t *port, int cmd, unsigned char *event, int atomic, int hop); | |
43 | static void fake_event(snd_emux_t *emu, snd_emux_port_t *port, int ch, int param, int val, int atomic, int hop); | |
44 | ||
45 | /* operators */ | |
46 | static snd_seq_oss_callback_t oss_callback = { | |
47 | .owner = THIS_MODULE, | |
48 | .open = snd_emux_open_seq_oss, | |
49 | .close = snd_emux_close_seq_oss, | |
50 | .ioctl = snd_emux_ioctl_seq_oss, | |
51 | .load_patch = snd_emux_load_patch_seq_oss, | |
52 | .reset = snd_emux_reset_seq_oss, | |
53 | }; | |
54 | ||
55 | ||
56 | /* | |
57 | * register OSS synth | |
58 | */ | |
59 | ||
60 | void | |
61 | snd_emux_init_seq_oss(snd_emux_t *emu) | |
62 | { | |
63 | snd_seq_oss_reg_t *arg; | |
64 | snd_seq_device_t *dev; | |
65 | ||
66 | if (snd_seq_device_new(emu->card, 0, SNDRV_SEQ_DEV_ID_OSS, | |
67 | sizeof(snd_seq_oss_reg_t), &dev) < 0) | |
68 | return; | |
69 | ||
70 | emu->oss_synth = dev; | |
71 | strcpy(dev->name, emu->name); | |
72 | arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); | |
73 | arg->type = SYNTH_TYPE_SAMPLE; | |
74 | arg->subtype = SAMPLE_TYPE_AWE32; | |
75 | arg->nvoices = emu->max_voices; | |
76 | arg->oper = oss_callback; | |
77 | arg->private_data = emu; | |
78 | ||
79 | /* register to OSS synth table */ | |
80 | snd_device_register(emu->card, dev); | |
81 | } | |
82 | ||
83 | ||
84 | /* | |
85 | * unregister | |
86 | */ | |
87 | void | |
88 | snd_emux_detach_seq_oss(snd_emux_t *emu) | |
89 | { | |
90 | if (emu->oss_synth) { | |
91 | snd_device_free(emu->card, emu->oss_synth); | |
92 | emu->oss_synth = NULL; | |
93 | } | |
94 | } | |
95 | ||
96 | ||
97 | /* use port number as a unique soundfont client number */ | |
98 | #define SF_CLIENT_NO(p) ((p) + 0x1000) | |
99 | ||
100 | /* | |
101 | * open port for OSS sequencer | |
102 | */ | |
103 | static int | |
104 | snd_emux_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure) | |
105 | { | |
106 | snd_emux_t *emu; | |
107 | snd_emux_port_t *p; | |
108 | snd_seq_port_callback_t callback; | |
109 | char tmpname[64]; | |
110 | ||
111 | emu = closure; | |
112 | snd_assert(arg != NULL && emu != NULL, return -ENXIO); | |
113 | ||
114 | down(&emu->register_mutex); | |
115 | ||
116 | if (!snd_emux_inc_count(emu)) { | |
117 | up(&emu->register_mutex); | |
118 | return -EFAULT; | |
119 | } | |
120 | ||
121 | memset(&callback, 0, sizeof(callback)); | |
122 | callback.owner = THIS_MODULE; | |
123 | callback.event_input = snd_emux_event_oss_input; | |
124 | ||
125 | sprintf(tmpname, "%s OSS Port", emu->name); | |
126 | p = snd_emux_create_port(emu, tmpname, 32, | |
127 | 1, &callback); | |
128 | if (p == NULL) { | |
129 | snd_printk("can't create port\n"); | |
130 | snd_emux_dec_count(emu); | |
131 | up(&emu->register_mutex); | |
132 | return -ENOMEM; | |
133 | } | |
134 | ||
135 | /* fill the argument data */ | |
136 | arg->private_data = p; | |
137 | arg->addr.client = p->chset.client; | |
138 | arg->addr.port = p->chset.port; | |
139 | p->oss_arg = arg; | |
140 | ||
141 | reset_port_mode(p, arg->seq_mode); | |
142 | ||
143 | snd_emux_reset_port(p); | |
144 | ||
145 | up(&emu->register_mutex); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | ||
150 | #define DEFAULT_DRUM_FLAGS ((1<<9) | (1<<25)) | |
151 | ||
152 | /* | |
153 | * reset port mode | |
154 | */ | |
155 | static void | |
156 | reset_port_mode(snd_emux_port_t *port, int midi_mode) | |
157 | { | |
158 | if (midi_mode) { | |
159 | port->port_mode = SNDRV_EMUX_PORT_MODE_OSS_MIDI; | |
160 | port->drum_flags = DEFAULT_DRUM_FLAGS; | |
161 | port->volume_atten = 0; | |
162 | port->oss_arg->event_passing = SNDRV_SEQ_OSS_PROCESS_KEYPRESS; | |
163 | } else { | |
164 | port->port_mode = SNDRV_EMUX_PORT_MODE_OSS_SYNTH; | |
165 | port->drum_flags = 0; | |
166 | port->volume_atten = 32; | |
167 | port->oss_arg->event_passing = SNDRV_SEQ_OSS_PROCESS_EVENTS; | |
168 | } | |
169 | } | |
170 | ||
171 | ||
172 | /* | |
173 | * close port | |
174 | */ | |
175 | static int | |
176 | snd_emux_close_seq_oss(snd_seq_oss_arg_t *arg) | |
177 | { | |
178 | snd_emux_t *emu; | |
179 | snd_emux_port_t *p; | |
180 | ||
181 | snd_assert(arg != NULL, return -ENXIO); | |
182 | p = arg->private_data; | |
183 | snd_assert(p != NULL, return -ENXIO); | |
184 | ||
185 | emu = p->emu; | |
186 | snd_assert(emu != NULL, return -ENXIO); | |
187 | ||
188 | down(&emu->register_mutex); | |
189 | snd_emux_sounds_off_all(p); | |
190 | snd_soundfont_close_check(emu->sflist, SF_CLIENT_NO(p->chset.port)); | |
191 | snd_seq_event_port_detach(p->chset.client, p->chset.port); | |
192 | snd_emux_dec_count(emu); | |
193 | ||
194 | up(&emu->register_mutex); | |
195 | return 0; | |
196 | } | |
197 | ||
198 | ||
199 | /* | |
200 | * load patch | |
201 | */ | |
202 | static int | |
203 | snd_emux_load_patch_seq_oss(snd_seq_oss_arg_t *arg, int format, | |
204 | const char __user *buf, int offs, int count) | |
205 | { | |
206 | snd_emux_t *emu; | |
207 | snd_emux_port_t *p; | |
208 | int rc; | |
209 | ||
210 | snd_assert(arg != NULL, return -ENXIO); | |
211 | p = arg->private_data; | |
212 | snd_assert(p != NULL, return -ENXIO); | |
213 | ||
214 | emu = p->emu; | |
215 | snd_assert(emu != NULL, return -ENXIO); | |
216 | ||
217 | if (format == GUS_PATCH) | |
218 | rc = snd_soundfont_load_guspatch(emu->sflist, buf, count, | |
219 | SF_CLIENT_NO(p->chset.port)); | |
220 | else if (format == SNDRV_OSS_SOUNDFONT_PATCH) { | |
221 | soundfont_patch_info_t patch; | |
222 | if (count < (int)sizeof(patch)) | |
223 | rc = -EINVAL; | |
224 | if (copy_from_user(&patch, buf, sizeof(patch))) | |
225 | rc = -EFAULT; | |
226 | if (patch.type >= SNDRV_SFNT_LOAD_INFO && | |
227 | patch.type <= SNDRV_SFNT_PROBE_DATA) | |
228 | rc = snd_soundfont_load(emu->sflist, buf, count, SF_CLIENT_NO(p->chset.port)); | |
229 | else { | |
230 | if (emu->ops.load_fx) | |
231 | rc = emu->ops.load_fx(emu, patch.type, patch.optarg, buf, count); | |
232 | else | |
233 | rc = -EINVAL; | |
234 | } | |
235 | } else | |
236 | rc = 0; | |
237 | return rc; | |
238 | } | |
239 | ||
240 | ||
241 | /* | |
242 | * ioctl | |
243 | */ | |
244 | static int | |
245 | snd_emux_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd, unsigned long ioarg) | |
246 | { | |
247 | snd_emux_port_t *p; | |
248 | snd_emux_t *emu; | |
249 | ||
250 | snd_assert(arg != NULL, return -ENXIO); | |
251 | p = arg->private_data; | |
252 | snd_assert(p != NULL, return -ENXIO); | |
253 | ||
254 | emu = p->emu; | |
255 | snd_assert(emu != NULL, return -ENXIO); | |
256 | ||
257 | switch (cmd) { | |
258 | case SNDCTL_SEQ_RESETSAMPLES: | |
259 | snd_soundfont_remove_samples(emu->sflist); | |
260 | return 0; | |
261 | ||
262 | case SNDCTL_SYNTH_MEMAVL: | |
263 | if (emu->memhdr) | |
264 | return snd_util_mem_avail(emu->memhdr); | |
265 | return 0; | |
266 | } | |
267 | ||
268 | return 0; | |
269 | } | |
270 | ||
271 | ||
272 | /* | |
273 | * reset device | |
274 | */ | |
275 | static int | |
276 | snd_emux_reset_seq_oss(snd_seq_oss_arg_t *arg) | |
277 | { | |
278 | snd_emux_port_t *p; | |
279 | ||
280 | snd_assert(arg != NULL, return -ENXIO); | |
281 | p = arg->private_data; | |
282 | snd_assert(p != NULL, return -ENXIO); | |
283 | snd_emux_reset_port(p); | |
284 | return 0; | |
285 | } | |
286 | ||
287 | ||
288 | /* | |
289 | * receive raw events: only SEQ_PRIVATE is accepted. | |
290 | */ | |
291 | static int | |
292 | snd_emux_event_oss_input(snd_seq_event_t *ev, int direct, void *private_data, | |
293 | int atomic, int hop) | |
294 | { | |
295 | snd_emux_t *emu; | |
296 | snd_emux_port_t *p; | |
297 | unsigned char cmd, *data; | |
298 | ||
299 | p = private_data; | |
300 | snd_assert(p != NULL, return -EINVAL); | |
301 | emu = p->emu; | |
302 | snd_assert(emu != NULL, return -EINVAL); | |
303 | if (ev->type != SNDRV_SEQ_EVENT_OSS) | |
304 | return snd_emux_event_input(ev, direct, private_data, atomic, hop); | |
305 | ||
306 | data = ev->data.raw8.d; | |
307 | /* only SEQ_PRIVATE is accepted */ | |
308 | if (data[0] != 0xfe) | |
309 | return 0; | |
310 | cmd = data[2] & _EMUX_OSS_MODE_VALUE_MASK; | |
311 | if (data[2] & _EMUX_OSS_MODE_FLAG) | |
312 | emuspec_control(emu, p, cmd, data, atomic, hop); | |
313 | else | |
314 | gusspec_control(emu, p, cmd, data, atomic, hop); | |
315 | return 0; | |
316 | } | |
317 | ||
318 | ||
319 | /* | |
320 | * OSS/AWE driver specific h/w controls | |
321 | */ | |
322 | static void | |
323 | emuspec_control(snd_emux_t *emu, snd_emux_port_t *port, int cmd, | |
324 | unsigned char *event, int atomic, int hop) | |
325 | { | |
326 | int voice; | |
327 | unsigned short p1; | |
328 | short p2; | |
329 | int i; | |
330 | snd_midi_channel_t *chan; | |
331 | ||
332 | voice = event[3]; | |
333 | if (voice < 0 || voice >= port->chset.max_channels) | |
334 | chan = NULL; | |
335 | else | |
336 | chan = &port->chset.channels[voice]; | |
337 | ||
338 | p1 = *(unsigned short *) &event[4]; | |
339 | p2 = *(short *) &event[6]; | |
340 | ||
341 | switch (cmd) { | |
342 | #if 0 /* don't do this atomically */ | |
343 | case _EMUX_OSS_REMOVE_LAST_SAMPLES: | |
344 | snd_soundfont_remove_unlocked(emu->sflist); | |
345 | break; | |
346 | #endif | |
347 | case _EMUX_OSS_SEND_EFFECT: | |
348 | if (chan) | |
349 | snd_emux_send_effect_oss(port, chan, p1, p2); | |
350 | break; | |
351 | ||
352 | case _EMUX_OSS_TERMINATE_ALL: | |
353 | snd_emux_terminate_all(emu); | |
354 | break; | |
355 | ||
356 | case _EMUX_OSS_TERMINATE_CHANNEL: | |
357 | /*snd_emux_mute_channel(emu, chan);*/ | |
358 | break; | |
359 | case _EMUX_OSS_RESET_CHANNEL: | |
360 | /*snd_emux_channel_init(chset, chan);*/ | |
361 | break; | |
362 | ||
363 | case _EMUX_OSS_RELEASE_ALL: | |
364 | fake_event(emu, port, voice, MIDI_CTL_ALL_NOTES_OFF, 0, atomic, hop); | |
365 | break; | |
366 | case _EMUX_OSS_NOTEOFF_ALL: | |
367 | fake_event(emu, port, voice, MIDI_CTL_ALL_SOUNDS_OFF, 0, atomic, hop); | |
368 | break; | |
369 | ||
370 | case _EMUX_OSS_INITIAL_VOLUME: | |
371 | if (p2) { | |
372 | port->volume_atten = (short)p1; | |
373 | snd_emux_update_port(port, SNDRV_EMUX_UPDATE_VOLUME); | |
374 | } | |
375 | break; | |
376 | ||
377 | case _EMUX_OSS_CHN_PRESSURE: | |
378 | if (chan) { | |
379 | chan->midi_pressure = p1; | |
380 | snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_FMMOD|SNDRV_EMUX_UPDATE_FM2FRQ2); | |
381 | } | |
382 | break; | |
383 | ||
384 | case _EMUX_OSS_CHANNEL_MODE: | |
385 | reset_port_mode(port, p1); | |
386 | snd_emux_reset_port(port); | |
387 | break; | |
388 | ||
389 | case _EMUX_OSS_DRUM_CHANNELS: | |
390 | port->drum_flags = *(unsigned int*)&event[4]; | |
391 | for (i = 0; i < port->chset.max_channels; i++) { | |
392 | chan = &port->chset.channels[i]; | |
393 | chan->drum_channel = ((port->drum_flags >> i) & 1) ? 1 : 0; | |
394 | } | |
395 | break; | |
396 | ||
397 | case _EMUX_OSS_MISC_MODE: | |
398 | if (p1 < EMUX_MD_END) | |
399 | port->ctrls[p1] = p2; | |
400 | break; | |
401 | case _EMUX_OSS_DEBUG_MODE: | |
402 | break; | |
403 | ||
404 | default: | |
405 | if (emu->ops.oss_ioctl) | |
406 | emu->ops.oss_ioctl(emu, cmd, p1, p2); | |
407 | break; | |
408 | } | |
409 | } | |
410 | ||
411 | /* | |
412 | * GUS specific h/w controls | |
413 | */ | |
414 | ||
415 | #include <linux/ultrasound.h> | |
416 | ||
417 | static void | |
418 | gusspec_control(snd_emux_t *emu, snd_emux_port_t *port, int cmd, | |
419 | unsigned char *event, int atomic, int hop) | |
420 | { | |
421 | int voice; | |
422 | unsigned short p1; | |
423 | short p2; | |
424 | int plong; | |
425 | snd_midi_channel_t *chan; | |
426 | ||
427 | if (port->port_mode != SNDRV_EMUX_PORT_MODE_OSS_SYNTH) | |
428 | return; | |
429 | if (cmd == _GUS_NUMVOICES) | |
430 | return; | |
431 | voice = event[3]; | |
432 | if (voice < 0 || voice >= port->chset.max_channels) | |
433 | return; | |
434 | ||
435 | chan = &port->chset.channels[voice]; | |
436 | ||
437 | p1 = *(unsigned short *) &event[4]; | |
438 | p2 = *(short *) &event[6]; | |
439 | plong = *(int*) &event[4]; | |
440 | ||
441 | switch (cmd) { | |
442 | case _GUS_VOICESAMPLE: | |
443 | chan->midi_program = p1; | |
444 | return; | |
445 | ||
446 | case _GUS_VOICEBALA: | |
447 | /* 0 to 15 --> 0 to 127 */ | |
448 | chan->control[MIDI_CTL_MSB_PAN] = (int)p1 << 3; | |
449 | snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_PAN); | |
450 | return; | |
451 | ||
452 | case _GUS_VOICEVOL: | |
453 | case _GUS_VOICEVOL2: | |
454 | /* not supported yet */ | |
455 | return; | |
456 | ||
457 | case _GUS_RAMPRANGE: | |
458 | case _GUS_RAMPRATE: | |
459 | case _GUS_RAMPMODE: | |
460 | case _GUS_RAMPON: | |
461 | case _GUS_RAMPOFF: | |
462 | /* volume ramping not supported */ | |
463 | return; | |
464 | ||
465 | case _GUS_VOLUME_SCALE: | |
466 | return; | |
467 | ||
468 | case _GUS_VOICE_POS: | |
469 | #ifdef SNDRV_EMUX_USE_RAW_EFFECT | |
470 | snd_emux_send_effect(port, chan, EMUX_FX_SAMPLE_START, | |
471 | (short)(plong & 0x7fff), | |
472 | EMUX_FX_FLAG_SET); | |
473 | snd_emux_send_effect(port, chan, EMUX_FX_COARSE_SAMPLE_START, | |
474 | (plong >> 15) & 0xffff, | |
475 | EMUX_FX_FLAG_SET); | |
476 | #endif | |
477 | return; | |
478 | } | |
479 | } | |
480 | ||
481 | ||
482 | /* | |
483 | * send an event to midi emulation | |
484 | */ | |
485 | static void | |
486 | fake_event(snd_emux_t *emu, snd_emux_port_t *port, int ch, int param, int val, int atomic, int hop) | |
487 | { | |
488 | snd_seq_event_t ev; | |
489 | memset(&ev, 0, sizeof(ev)); | |
490 | ev.type = SNDRV_SEQ_EVENT_CONTROLLER; | |
491 | ev.data.control.channel = ch; | |
492 | ev.data.control.param = param; | |
493 | ev.data.control.value = val; | |
494 | snd_emux_event_input(&ev, 0, port, atomic, hop); | |
495 | } | |
496 | ||
497 | #endif /* CONFIG_SND_SEQUENCER_OSS */ |