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Diffstat (limited to 'sound/synth/emux/emux_oss.c')
-rw-r--r--sound/synth/emux/emux_oss.c497
1 files changed, 497 insertions, 0 deletions
diff --git a/sound/synth/emux/emux_oss.c b/sound/synth/emux/emux_oss.c
new file mode 100644
index 000000000000..5272f4ac8afd
--- /dev/null
+++ b/sound/synth/emux/emux_oss.c
@@ -0,0 +1,497 @@
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
34static int snd_emux_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure);
35static int snd_emux_close_seq_oss(snd_seq_oss_arg_t *arg);
36static int snd_emux_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd, unsigned long ioarg);
37static int snd_emux_load_patch_seq_oss(snd_seq_oss_arg_t *arg, int format, const char __user *buf, int offs, int count);
38static int snd_emux_reset_seq_oss(snd_seq_oss_arg_t *arg);
39static int snd_emux_event_oss_input(snd_seq_event_t *ev, int direct, void *private, int atomic, int hop);
40static void reset_port_mode(snd_emux_port_t *port, int midi_mode);
41static void emuspec_control(snd_emux_t *emu, snd_emux_port_t *port, int cmd, unsigned char *event, int atomic, int hop);
42static void gusspec_control(snd_emux_t *emu, snd_emux_port_t *port, int cmd, unsigned char *event, int atomic, int hop);
43static 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 */
46static 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
60void
61snd_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 */
87void
88snd_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 */
103static int
104snd_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 */
155static void
156reset_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 */
175static int
176snd_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 */
202static int
203snd_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 */
244static int
245snd_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 */
275static int
276snd_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 */
291static int
292snd_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 */
322static void
323emuspec_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
417static void
418gusspec_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 */
485static void
486fake_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 */
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