aboutsummaryrefslogtreecommitdiffstats
path: root/sound/drivers/opl3/opl3_oss.c
blob: 21a2b409d6d312adfc759526285064c605342863 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
/*
 *  Interface for OSS sequencer emulation
 *
 *  Copyright (C) 2000 Uros Bizjak <uros@kss-loka.si>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include "opl3_voice.h"
#include <linux/slab.h>

static int snd_opl3_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure);
static int snd_opl3_close_seq_oss(snd_seq_oss_arg_t *arg);
static int snd_opl3_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd, unsigned long ioarg);
static int snd_opl3_load_patch_seq_oss(snd_seq_oss_arg_t *arg, int format, const char __user *buf, int offs, int count);
static int snd_opl3_reset_seq_oss(snd_seq_oss_arg_t *arg);

/* */

static inline mm_segment_t snd_enter_user(void)
{
	mm_segment_t fs = get_fs();
	set_fs(get_ds());
	return fs;
}

static inline void snd_leave_user(mm_segment_t fs)
{
	set_fs(fs);
}

/* operators */

extern snd_midi_op_t opl3_ops;

static snd_seq_oss_callback_t oss_callback = {
	.owner = 	THIS_MODULE,
	.open =		snd_opl3_open_seq_oss,
	.close =	snd_opl3_close_seq_oss,
	.ioctl =	snd_opl3_ioctl_seq_oss,
	.load_patch =	snd_opl3_load_patch_seq_oss,
	.reset =	snd_opl3_reset_seq_oss,
};

static int snd_opl3_oss_event_input(snd_seq_event_t *ev, int direct,
				    void *private_data, int atomic, int hop)
{
	opl3_t *opl3 = private_data;

	if (ev->type != SNDRV_SEQ_EVENT_OSS)
		snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset);
	return 0;
}

/* ------------------------------ */

static void snd_opl3_oss_free_port(void *private_data)
{
	opl3_t *opl3 = private_data;

	snd_midi_channel_free_set(opl3->oss_chset);
}

static int snd_opl3_oss_create_port(opl3_t * opl3)
{
	snd_seq_port_callback_t callbacks;
	char name[32];
	int voices, opl_ver;

	voices = (opl3->hardware < OPL3_HW_OPL3) ?
		MAX_OPL2_VOICES : MAX_OPL3_VOICES;
	opl3->oss_chset = snd_midi_channel_alloc_set(voices);
	if (opl3->oss_chset == NULL)
		return -ENOMEM;
	opl3->oss_chset->private_data = opl3;

	memset(&callbacks, 0, sizeof(callbacks));
	callbacks.owner = THIS_MODULE;
	callbacks.event_input = snd_opl3_oss_event_input;
	callbacks.private_free = snd_opl3_oss_free_port;
	callbacks.private_data = opl3;

	opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
	sprintf(name, "OPL%i OSS Port", opl_ver);

	opl3->oss_chset->client = opl3->seq_client;
	opl3->oss_chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
							  SNDRV_SEQ_PORT_CAP_WRITE,
							  SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
							  SNDRV_SEQ_PORT_TYPE_MIDI_GM |
							  SNDRV_SEQ_PORT_TYPE_SYNTH,
							  voices, voices,
							  name);
	if (opl3->oss_chset->port < 0) {
		snd_midi_channel_free_set(opl3->oss_chset);
		return opl3->oss_chset->port;
	}
	return 0;
}

/* ------------------------------ */

/* register OSS synth */
void snd_opl3_init_seq_oss(opl3_t *opl3, char *name)
{
	snd_seq_oss_reg_t *arg;
	snd_seq_device_t *dev;

	if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS,
			       sizeof(snd_seq_oss_reg_t), &dev) < 0)
		return;

	opl3->oss_seq_dev = dev;
	strlcpy(dev->name, name, sizeof(dev->name));
	arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
	arg->type = SYNTH_TYPE_FM;
	if (opl3->hardware < OPL3_HW_OPL3) {
		arg->subtype = FM_TYPE_ADLIB;
		arg->nvoices = MAX_OPL2_VOICES;
	} else {
		arg->subtype = FM_TYPE_OPL3;
		arg->nvoices = MAX_OPL3_VOICES;
	}
	arg->oper = oss_callback;
	arg->private_data = opl3;

	snd_opl3_oss_create_port(opl3);

	/* register to OSS synth table */
	snd_device_register(opl3->card, dev);
}

/* unregister */
void snd_opl3_free_seq_oss(opl3_t *opl3)
{
	if (opl3->oss_seq_dev) {
		snd_device_free(opl3->card, opl3->oss_seq_dev);
		opl3->oss_seq_dev = NULL;
	}
}

/* ------------------------------ */

/* open OSS sequencer */
static int snd_opl3_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure)
{
	opl3_t *opl3 = closure;
	int err;

	snd_assert(arg != NULL, return -ENXIO);

	if ((err = snd_opl3_synth_setup(opl3)) < 0)
		return err;

	/* fill the argument data */
	arg->private_data = opl3;
	arg->addr.client = opl3->oss_chset->client;
	arg->addr.port = opl3->oss_chset->port;

	if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
		return err;

	opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH;
	return 0;
}

/* close OSS sequencer */
static int snd_opl3_close_seq_oss(snd_seq_oss_arg_t *arg)
{
	opl3_t *opl3;

	snd_assert(arg != NULL, return -ENXIO);
	opl3 = arg->private_data;

	snd_opl3_synth_cleanup(opl3);

	snd_opl3_synth_use_dec(opl3);
	return 0;
}

/* load patch */

/* offsets for SBI params */
#define AM_VIB		0
#define KSL_LEVEL	2
#define ATTACK_DECAY	4
#define SUSTAIN_RELEASE	6
#define WAVE_SELECT	8

/* offset for SBI instrument */
#define CONNECTION	10
#define OFFSET_4OP	11

/* from sound_config.h */
#define SBFM_MAXINSTR	256

static int snd_opl3_load_patch_seq_oss(snd_seq_oss_arg_t *arg, int format,
				       const char __user *buf, int offs, int count)
{
	opl3_t *opl3;
	int err = -EINVAL;

	snd_assert(arg != NULL, return -ENXIO);
	opl3 = arg->private_data;

	if ((format == FM_PATCH) || (format == OPL3_PATCH)) {
		struct sbi_instrument sbi;

		size_t size;
		snd_seq_instr_header_t *put;
		snd_seq_instr_data_t *data;
		fm_xinstrument_t *xinstr;

		snd_seq_event_t ev;
		int i;

		mm_segment_t fs;

		if (count < (int)sizeof(sbi)) {
			snd_printk("FM Error: Patch record too short\n");
			return -EINVAL;
		}
		if (copy_from_user(&sbi, buf, sizeof(sbi)))
			return -EFAULT;

		if (sbi.channel < 0 || sbi.channel >= SBFM_MAXINSTR) {
			snd_printk("FM Error: Invalid instrument number %d\n", sbi.channel);
			return -EINVAL;
		}

		size = sizeof(*put) + sizeof(fm_xinstrument_t);
		put = kzalloc(size, GFP_KERNEL);
		if (put == NULL)
			return -ENOMEM;
		/* build header */
		data = &put->data;
		data->type = SNDRV_SEQ_INSTR_ATYPE_DATA;
		strcpy(data->data.format, SNDRV_SEQ_INSTR_ID_OPL2_3);
		/* build data section */
		xinstr = (fm_xinstrument_t *)(data + 1);
		xinstr->stype = FM_STRU_INSTR;
        
		for (i = 0; i < 2; i++) {
			xinstr->op[i].am_vib = sbi.operators[AM_VIB + i];
			xinstr->op[i].ksl_level = sbi.operators[KSL_LEVEL + i];
			xinstr->op[i].attack_decay = sbi.operators[ATTACK_DECAY + i];
			xinstr->op[i].sustain_release = sbi.operators[SUSTAIN_RELEASE + i];
			xinstr->op[i].wave_select = sbi.operators[WAVE_SELECT + i];
		}
		xinstr->feedback_connection[0] = sbi.operators[CONNECTION];

		if (format == OPL3_PATCH) {
			xinstr->type = FM_PATCH_OPL3;
			for (i = 0; i < 2; i++) {
				xinstr->op[i+2].am_vib = sbi.operators[OFFSET_4OP + AM_VIB + i];
				xinstr->op[i+2].ksl_level = sbi.operators[OFFSET_4OP + KSL_LEVEL + i];
				xinstr->op[i+2].attack_decay = sbi.operators[OFFSET_4OP + ATTACK_DECAY + i];
				xinstr->op[i+2].sustain_release = sbi.operators[OFFSET_4OP + SUSTAIN_RELEASE + i];
				xinstr->op[i+2].wave_select = sbi.operators[OFFSET_4OP + WAVE_SELECT + i];
			}
			xinstr->feedback_connection[1] = sbi.operators[OFFSET_4OP + CONNECTION];
		} else {
			xinstr->type = FM_PATCH_OPL2;
		}

		put->id.instr.std = SNDRV_SEQ_INSTR_TYPE2_OPL2_3;
		put->id.instr.bank = 127;
		put->id.instr.prg = sbi.channel;
		put->cmd = SNDRV_SEQ_INSTR_PUT_CMD_CREATE;

		memset (&ev, 0, sizeof(ev));
		ev.source.client = SNDRV_SEQ_CLIENT_OSS;
		ev.dest = arg->addr; 

		ev.flags = SNDRV_SEQ_EVENT_LENGTH_VARUSR;
		ev.queue = SNDRV_SEQ_QUEUE_DIRECT;

		fs = snd_enter_user();
	__again:
		ev.type = SNDRV_SEQ_EVENT_INSTR_PUT;
		ev.data.ext.len = size;
		ev.data.ext.ptr = put;

		err = snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev,
				    opl3->seq_client, 0, 0);
		if (err == -EBUSY) {
			snd_seq_instr_header_t remove;

			memset (&remove, 0, sizeof(remove));
			remove.cmd = SNDRV_SEQ_INSTR_FREE_CMD_SINGLE;
			remove.id.instr = put->id.instr;

			/* remove instrument */
			ev.type = SNDRV_SEQ_EVENT_INSTR_FREE;
			ev.data.ext.len = sizeof(remove);
			ev.data.ext.ptr = &remove;

			snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev,
					    opl3->seq_client, 0, 0);
			goto __again;
		}
		snd_leave_user(fs);

		kfree(put);
	}
	return err;
}

/* ioctl */
static int snd_opl3_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd,
				  unsigned long ioarg)
{
	opl3_t *opl3;

	snd_assert(arg != NULL, return -ENXIO);
	opl3 = arg->private_data;
	switch (cmd) {
		case SNDCTL_FM_LOAD_INSTR:
			snd_printk("OPL3: Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. Fix the program.\n");
			return -EINVAL;

		case SNDCTL_SYNTH_MEMAVL:
			return 0x7fffffff;

		case SNDCTL_FM_4OP_ENABLE:
			// handled automatically by OPL instrument type
			return 0;

		default:
			return -EINVAL;
	}
	return 0;
}

/* reset device */
static int snd_opl3_reset_seq_oss(snd_seq_oss_arg_t *arg)
{
	opl3_t *opl3;

	snd_assert(arg != NULL, return -ENXIO);
	opl3 = arg->private_data;

	return 0;
}