2 * OSS compatible sequencer driver
4 * synth device handlers
6 * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
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.
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.
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
23 #include "seq_oss_synth.h"
24 #include "seq_oss_midi.h"
25 #include "../seq_lock.h"
26 #include <linux/init.h>
27 #include <linux/module.h>
28 #include <linux/slab.h>
33 #define SNDRV_SEQ_OSS_MAX_SYNTH_NAME 30
34 #define MAX_SYSEX_BUFLEN 128
38 * definition of synth info records
42 struct seq_oss_synth_sysex {
45 unsigned char buf[MAX_SYSEX_BUFLEN];
49 struct seq_oss_synth {
57 char name[SNDRV_SEQ_OSS_MAX_SYNTH_NAME];
58 struct snd_seq_oss_callback oper;
63 snd_use_lock_t use_lock;
70 static int max_synth_devs;
71 static struct seq_oss_synth *synth_devs[SNDRV_SEQ_OSS_MAX_SYNTH_DEVS];
72 static struct seq_oss_synth midi_synth_dev = {
74 SYNTH_TYPE_MIDI, /* synth_type */
75 0, /* synth_subtype */
80 static DEFINE_SPINLOCK(register_lock);
85 static struct seq_oss_synth *get_synthdev(struct seq_oss_devinfo *dp, int dev);
86 static void reset_channels(struct seq_oss_synthinfo *info);
89 * global initialization
92 snd_seq_oss_synth_init(void)
94 snd_use_lock_init(&midi_synth_dev.use_lock);
98 * registration of the synth device
101 snd_seq_oss_synth_register(struct snd_seq_device *dev)
104 struct seq_oss_synth *rec;
105 struct snd_seq_oss_reg *reg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
108 if ((rec = kzalloc(sizeof(*rec), GFP_KERNEL)) == NULL) {
109 snd_printk(KERN_ERR "can't malloc synth info\n");
112 rec->seq_device = -1;
113 rec->synth_type = reg->type;
114 rec->synth_subtype = reg->subtype;
115 rec->nr_voices = reg->nvoices;
116 rec->oper = reg->oper;
117 rec->private_data = reg->private_data;
119 snd_use_lock_init(&rec->use_lock);
121 /* copy and truncate the name of synth device */
122 strlcpy(rec->name, dev->name, sizeof(rec->name));
125 spin_lock_irqsave(®ister_lock, flags);
126 for (i = 0; i < max_synth_devs; i++) {
127 if (synth_devs[i] == NULL)
130 if (i >= max_synth_devs) {
131 if (max_synth_devs >= SNDRV_SEQ_OSS_MAX_SYNTH_DEVS) {
132 spin_unlock_irqrestore(®ister_lock, flags);
133 snd_printk(KERN_ERR "no more synth slot\n");
141 debug_printk(("synth %s registered %d\n", rec->name, i));
142 spin_unlock_irqrestore(®ister_lock, flags);
143 dev->driver_data = rec;
144 #ifdef SNDRV_OSS_INFO_DEV_SYNTH
146 snd_oss_info_register(SNDRV_OSS_INFO_DEV_SYNTH, i, rec->name);
153 snd_seq_oss_synth_unregister(struct snd_seq_device *dev)
156 struct seq_oss_synth *rec = dev->driver_data;
159 spin_lock_irqsave(®ister_lock, flags);
160 for (index = 0; index < max_synth_devs; index++) {
161 if (synth_devs[index] == rec)
164 if (index >= max_synth_devs) {
165 spin_unlock_irqrestore(®ister_lock, flags);
166 snd_printk(KERN_ERR "can't unregister synth\n");
169 synth_devs[index] = NULL;
170 if (index == max_synth_devs - 1) {
171 for (index--; index >= 0; index--) {
172 if (synth_devs[index])
175 max_synth_devs = index + 1;
177 spin_unlock_irqrestore(®ister_lock, flags);
178 #ifdef SNDRV_OSS_INFO_DEV_SYNTH
179 if (rec->seq_device < SNDRV_CARDS)
180 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_SYNTH, rec->seq_device);
183 snd_use_lock_sync(&rec->use_lock);
192 static struct seq_oss_synth *
195 struct seq_oss_synth *rec;
198 spin_lock_irqsave(®ister_lock, flags);
199 rec = synth_devs[dev];
201 snd_use_lock_use(&rec->use_lock);
202 spin_unlock_irqrestore(®ister_lock, flags);
208 * set up synth tables
212 snd_seq_oss_synth_setup(struct seq_oss_devinfo *dp)
215 struct seq_oss_synth *rec;
216 struct seq_oss_synthinfo *info;
218 dp->max_synthdev = max_synth_devs;
219 dp->synth_opened = 0;
220 memset(dp->synths, 0, sizeof(dp->synths));
221 for (i = 0; i < dp->max_synthdev; i++) {
225 if (rec->oper.open == NULL || rec->oper.close == NULL) {
226 snd_use_lock_free(&rec->use_lock);
229 info = &dp->synths[i];
230 info->arg.app_index = dp->port;
231 info->arg.file_mode = dp->file_mode;
232 info->arg.seq_mode = dp->seq_mode;
233 if (dp->seq_mode == SNDRV_SEQ_OSS_MODE_SYNTH)
234 info->arg.event_passing = SNDRV_SEQ_OSS_PROCESS_EVENTS;
236 info->arg.event_passing = SNDRV_SEQ_OSS_PASS_EVENTS;
238 if (!try_module_get(rec->oper.owner)) {
239 snd_use_lock_free(&rec->use_lock);
242 if (rec->oper.open(&info->arg, rec->private_data) < 0) {
243 module_put(rec->oper.owner);
244 snd_use_lock_free(&rec->use_lock);
247 info->nr_voices = rec->nr_voices;
248 if (info->nr_voices > 0) {
249 info->ch = kcalloc(info->nr_voices, sizeof(struct seq_oss_chinfo), GFP_KERNEL);
251 snd_printk(KERN_ERR "Cannot malloc\n");
252 rec->oper.close(&info->arg);
253 module_put(rec->oper.owner);
254 snd_use_lock_free(&rec->use_lock);
257 reset_channels(info);
259 debug_printk(("synth %d assigned\n", i));
263 snd_use_lock_free(&rec->use_lock);
269 * set up synth tables for MIDI emulation - /dev/music mode only
273 snd_seq_oss_synth_setup_midi(struct seq_oss_devinfo *dp)
277 if (dp->max_synthdev >= SNDRV_SEQ_OSS_MAX_SYNTH_DEVS)
280 for (i = 0; i < dp->max_mididev; i++) {
281 struct seq_oss_synthinfo *info;
282 info = &dp->synths[dp->max_synthdev];
283 if (snd_seq_oss_midi_open(dp, i, dp->file_mode) < 0)
285 info->arg.app_index = dp->port;
286 info->arg.file_mode = dp->file_mode;
287 info->arg.seq_mode = dp->seq_mode;
288 info->arg.private_data = info;
290 info->midi_mapped = i;
291 info->arg.event_passing = SNDRV_SEQ_OSS_PASS_EVENTS;
292 snd_seq_oss_midi_get_addr(dp, i, &info->arg.addr);
294 midi_synth_dev.opened++;
296 if (dp->max_synthdev >= SNDRV_SEQ_OSS_MAX_SYNTH_DEVS)
303 * clean up synth tables
307 snd_seq_oss_synth_cleanup(struct seq_oss_devinfo *dp)
310 struct seq_oss_synth *rec;
311 struct seq_oss_synthinfo *info;
313 if (snd_BUG_ON(dp->max_synthdev >= SNDRV_SEQ_OSS_MAX_SYNTH_DEVS))
315 for (i = 0; i < dp->max_synthdev; i++) {
316 info = &dp->synths[i];
320 if (midi_synth_dev.opened > 0) {
321 snd_seq_oss_midi_close(dp, info->midi_mapped);
322 midi_synth_dev.opened--;
328 if (rec->opened > 0) {
329 debug_printk(("synth %d closed\n", i));
330 rec->oper.close(&info->arg);
331 module_put(rec->oper.owner);
334 snd_use_lock_free(&rec->use_lock);
341 dp->synth_opened = 0;
342 dp->max_synthdev = 0;
346 * check if the specified device is MIDI mapped device
349 is_midi_dev(struct seq_oss_devinfo *dp, int dev)
351 if (dev < 0 || dev >= dp->max_synthdev)
353 if (dp->synths[dev].is_midi)
359 * return synth device information pointer
361 static struct seq_oss_synth *
362 get_synthdev(struct seq_oss_devinfo *dp, int dev)
364 struct seq_oss_synth *rec;
365 if (dev < 0 || dev >= dp->max_synthdev)
367 if (! dp->synths[dev].opened)
369 if (dp->synths[dev].is_midi)
370 return &midi_synth_dev;
371 if ((rec = get_sdev(dev)) == NULL)
374 snd_use_lock_free(&rec->use_lock);
382 * reset note and velocity on each channel.
385 reset_channels(struct seq_oss_synthinfo *info)
388 if (info->ch == NULL || ! info->nr_voices)
390 for (i = 0; i < info->nr_voices; i++) {
391 info->ch[i].note = -1;
398 * reset synth device:
399 * call reset callback. if no callback is defined, send a heartbeat
400 * event to the corresponding port.
403 snd_seq_oss_synth_reset(struct seq_oss_devinfo *dp, int dev)
405 struct seq_oss_synth *rec;
406 struct seq_oss_synthinfo *info;
408 if (snd_BUG_ON(dev < 0 || dev >= dp->max_synthdev))
410 info = &dp->synths[dev];
414 info->sysex->len = 0; /* reset sysex */
415 reset_channels(info);
417 if (midi_synth_dev.opened <= 0)
419 snd_seq_oss_midi_reset(dp, info->midi_mapped);
420 /* reopen the device */
421 snd_seq_oss_midi_close(dp, dev);
422 if (snd_seq_oss_midi_open(dp, info->midi_mapped,
423 dp->file_mode) < 0) {
424 midi_synth_dev.opened--;
437 if (rec->oper.reset) {
438 rec->oper.reset(&info->arg);
440 struct snd_seq_event ev;
441 memset(&ev, 0, sizeof(ev));
442 snd_seq_oss_fill_addr(dp, &ev, info->arg.addr.client,
443 info->arg.addr.port);
444 ev.type = SNDRV_SEQ_EVENT_RESET;
445 snd_seq_oss_dispatch(dp, &ev, 0, 0);
447 snd_use_lock_free(&rec->use_lock);
452 * load a patch record:
453 * call load_patch callback function
456 snd_seq_oss_synth_load_patch(struct seq_oss_devinfo *dp, int dev, int fmt,
457 const char __user *buf, int p, int c)
459 struct seq_oss_synth *rec;
462 if (dev < 0 || dev >= dp->max_synthdev)
465 if (is_midi_dev(dp, dev))
467 if ((rec = get_synthdev(dp, dev)) == NULL)
470 if (rec->oper.load_patch == NULL)
473 rc = rec->oper.load_patch(&dp->synths[dev].arg, fmt, buf, p, c);
474 snd_use_lock_free(&rec->use_lock);
479 * check if the device is valid synth device
482 snd_seq_oss_synth_is_valid(struct seq_oss_devinfo *dp, int dev)
484 struct seq_oss_synth *rec;
485 rec = get_synthdev(dp, dev);
487 snd_use_lock_free(&rec->use_lock);
495 * receive OSS 6 byte sysex packet:
496 * the full sysex message will be sent if it reaches to the end of data
500 snd_seq_oss_synth_sysex(struct seq_oss_devinfo *dp, int dev, unsigned char *buf, struct snd_seq_event *ev)
504 struct seq_oss_synth_sysex *sysex;
506 if (! snd_seq_oss_synth_is_valid(dp, dev))
509 sysex = dp->synths[dev].sysex;
511 sysex = kzalloc(sizeof(*sysex), GFP_KERNEL);
514 dp->synths[dev].sysex = sysex;
518 dest = sysex->buf + sysex->len;
519 /* copy 6 byte packet to the buffer */
520 for (i = 0; i < 6; i++) {
521 if (buf[i] == 0xff) {
527 if (sysex->len >= MAX_SYSEX_BUFLEN) {
534 if (sysex->len && send) {
538 return -EINVAL; /* skip */
540 /* copy the data to event record and send it */
541 ev->flags = SNDRV_SEQ_EVENT_LENGTH_VARIABLE;
542 if (snd_seq_oss_synth_addr(dp, dev, ev))
544 ev->data.ext.len = sysex->len;
545 ev->data.ext.ptr = sysex->buf;
550 return -EINVAL; /* skip */
554 * fill the event source/destination addresses
557 snd_seq_oss_synth_addr(struct seq_oss_devinfo *dp, int dev, struct snd_seq_event *ev)
559 if (! snd_seq_oss_synth_is_valid(dp, dev))
561 snd_seq_oss_fill_addr(dp, ev, dp->synths[dev].arg.addr.client,
562 dp->synths[dev].arg.addr.port);
568 * OSS compatible ioctl
571 snd_seq_oss_synth_ioctl(struct seq_oss_devinfo *dp, int dev, unsigned int cmd, unsigned long addr)
573 struct seq_oss_synth *rec;
576 if (is_midi_dev(dp, dev))
578 if ((rec = get_synthdev(dp, dev)) == NULL)
580 if (rec->oper.ioctl == NULL)
583 rc = rec->oper.ioctl(&dp->synths[dev].arg, cmd, addr);
584 snd_use_lock_free(&rec->use_lock);
590 * send OSS raw events - SEQ_PRIVATE and SEQ_VOLUME
593 snd_seq_oss_synth_raw_event(struct seq_oss_devinfo *dp, int dev, unsigned char *data, struct snd_seq_event *ev)
595 if (! snd_seq_oss_synth_is_valid(dp, dev) || is_midi_dev(dp, dev))
597 ev->type = SNDRV_SEQ_EVENT_OSS;
598 memcpy(ev->data.raw8.d, data, 8);
599 return snd_seq_oss_synth_addr(dp, dev, ev);
604 * create OSS compatible synth_info record
607 snd_seq_oss_synth_make_info(struct seq_oss_devinfo *dp, int dev, struct synth_info *inf)
609 struct seq_oss_synth *rec;
611 if (dev < 0 || dev >= dp->max_synthdev)
614 if (dp->synths[dev].is_midi) {
615 struct midi_info minf;
616 snd_seq_oss_midi_make_info(dp, dp->synths[dev].midi_mapped, &minf);
617 inf->synth_type = SYNTH_TYPE_MIDI;
618 inf->synth_subtype = 0;
621 strlcpy(inf->name, minf.name, sizeof(inf->name));
623 if ((rec = get_synthdev(dp, dev)) == NULL)
625 inf->synth_type = rec->synth_type;
626 inf->synth_subtype = rec->synth_subtype;
627 inf->nr_voices = rec->nr_voices;
629 strlcpy(inf->name, rec->name, sizeof(inf->name));
630 snd_use_lock_free(&rec->use_lock);
636 #ifdef CONFIG_PROC_FS
641 snd_seq_oss_synth_info_read(struct snd_info_buffer *buf)
644 struct seq_oss_synth *rec;
646 snd_iprintf(buf, "\nNumber of synth devices: %d\n", max_synth_devs);
647 for (i = 0; i < max_synth_devs; i++) {
648 snd_iprintf(buf, "\nsynth %d: ", i);
651 snd_iprintf(buf, "*empty*\n");
654 snd_iprintf(buf, "[%s]\n", rec->name);
655 snd_iprintf(buf, " type 0x%x : subtype 0x%x : voices %d\n",
656 rec->synth_type, rec->synth_subtype,
658 snd_iprintf(buf, " capabilities : ioctl %s / load_patch %s\n",
659 enabled_str((long)rec->oper.ioctl),
660 enabled_str((long)rec->oper.load_patch));
661 snd_use_lock_free(&rec->use_lock);
664 #endif /* CONFIG_PROC_FS */