summaryrefslogtreecommitdiffstats
path: root/sound/synth/emux/emux_nrpn.c
blob: 00fc005ecf6e6f6bc8c21285703d246bdee658b7 (plain)
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
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
/*
 *  NRPN / SYSEX callbacks for Emu8k/Emu10k1
 *
 *  Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de>
 *
 *   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 "emux_voice.h"
#include <sound/asoundef.h>

/*
 * conversion from NRPN/control parameters to Emu8000 raw parameters
 */

/* NRPN / CC -> Emu8000 parameter converter */
struct nrpn_conv_table {
	int control;
	int effect;
	int (*convert)(int val);
};

/* effect sensitivity */

#define FX_CUTOFF	0
#define FX_RESONANCE	1
#define FX_ATTACK	2
#define FX_RELEASE	3
#define FX_VIBRATE	4
#define FX_VIBDEPTH	5
#define FX_VIBDELAY	6
#define FX_NUMS		7

/*
 * convert NRPN/control values
 */

static int send_converted_effect(struct nrpn_conv_table *table, int num_tables,
				 struct snd_emux_port *port,
				 struct snd_midi_channel *chan,
				 int type, int val, int mode)
{
	int i, cval;
	for (i = 0; i < num_tables; i++) {
		if (table[i].control == type) {
			cval = table[i].convert(val);
			snd_emux_send_effect(port, chan, table[i].effect,
					     cval, mode);
			return 1;
		}
	}
	return 0;
}

#define DEF_FX_CUTOFF		170
#define DEF_FX_RESONANCE	6
#define DEF_FX_ATTACK		50
#define DEF_FX_RELEASE		50
#define DEF_FX_VIBRATE		30
#define DEF_FX_VIBDEPTH		4
#define DEF_FX_VIBDELAY		1500

/* effect sensitivities for GS NRPN:
 *  adjusted for chaos 8MB soundfonts
 */
static int gs_sense[] = 
{
	DEF_FX_CUTOFF, DEF_FX_RESONANCE, DEF_FX_ATTACK, DEF_FX_RELEASE,
	DEF_FX_VIBRATE, DEF_FX_VIBDEPTH, DEF_FX_VIBDELAY
};

/* effect sensitivies for XG controls:
 * adjusted for chaos 8MB soundfonts
 */
static int xg_sense[] = 
{
	DEF_FX_CUTOFF, DEF_FX_RESONANCE, DEF_FX_ATTACK, DEF_FX_RELEASE,
	DEF_FX_VIBRATE, DEF_FX_VIBDEPTH, DEF_FX_VIBDELAY
};


/*
 * AWE32 NRPN effects
 */

static int fx_delay(int val);
static int fx_attack(int val);
static int fx_hold(int val);
static int fx_decay(int val);
static int fx_the_value(int val);
static int fx_twice_value(int val);
static int fx_conv_pitch(int val);
static int fx_conv_Q(int val);

/* function for each NRPN */		/* [range]  units */
#define fx_env1_delay	fx_delay	/* [0,5900] 4msec */
#define fx_env1_attack	fx_attack	/* [0,5940] 1msec */
#define fx_env1_hold	fx_hold		/* [0,8191] 1msec */
#define fx_env1_decay	fx_decay	/* [0,5940] 4msec */
#define fx_env1_release	fx_decay	/* [0,5940] 4msec */
#define fx_env1_sustain	fx_the_value	/* [0,127] 0.75dB */
#define fx_env1_pitch	fx_the_value	/* [-127,127] 9.375cents */
#define fx_env1_cutoff	fx_the_value	/* [-127,127] 56.25cents */

#define fx_env2_delay	fx_delay	/* [0,5900] 4msec */
#define fx_env2_attack	fx_attack	/* [0,5940] 1msec */
#define fx_env2_hold	fx_hold		/* [0,8191] 1msec */
#define fx_env2_decay	fx_decay	/* [0,5940] 4msec */
#define fx_env2_release	fx_decay	/* [0,5940] 4msec */
#define fx_env2_sustain	fx_the_value	/* [0,127] 0.75dB */

#define fx_lfo1_delay	fx_delay	/* [0,5900] 4msec */
#define fx_lfo1_freq	fx_twice_value	/* [0,127] 84mHz */
#define fx_lfo1_volume	fx_twice_value	/* [0,127] 0.1875dB */
#define fx_lfo1_pitch	fx_the_value	/* [-127,127] 9.375cents */
#define fx_lfo1_cutoff	fx_twice_value	/* [-64,63] 56.25cents */

#define fx_lfo2_delay	fx_delay	/* [0,5900] 4msec */
#define fx_lfo2_freq	fx_twice_value	/* [0,127] 84mHz */
#define fx_lfo2_pitch	fx_the_value	/* [-127,127] 9.375cents */

#define fx_init_pitch	fx_conv_pitch	/* [-8192,8192] cents */
#define fx_chorus	fx_the_value	/* [0,255] -- */
#define fx_reverb	fx_the_value	/* [0,255] -- */
#define fx_cutoff	fx_twice_value	/* [0,127] 62Hz */
#define fx_filterQ	fx_conv_Q	/* [0,127] -- */

static int fx_delay(int val)
{
	return (unsigned short)snd_sf_calc_parm_delay(val);
}

static int fx_attack(int val)
{
	return (unsigned short)snd_sf_calc_parm_attack(val);
}

static int fx_hold(int val)
{
	return (unsigned short)snd_sf_calc_parm_hold(val);
}

static int fx_decay(int val)
{
	return (unsigned short)snd_sf_calc_parm_decay(val);
}

static int fx_the_value(int val)
{
	return (unsigned short)(val & 0xff);
}

static int fx_twice_value(int val)
{
	return (unsigned short)((val * 2) & 0xff);
}

static int fx_conv_pitch(int val)
{
	return (short)(val * 4096 / 1200);
}

static int fx_conv_Q(int val)
{
	return (unsigned short)((val / 8) & 0xff);
}


static struct nrpn_conv_table awe_effects[] =
{
	{ 0, EMUX_FX_LFO1_DELAY,	fx_lfo1_delay},
	{ 1, EMUX_FX_LFO1_FREQ,	fx_lfo1_freq},
	{ 2, EMUX_FX_LFO2_DELAY,	fx_lfo2_delay},
	{ 3, EMUX_FX_LFO2_FREQ,	fx_lfo2_freq},

	{ 4, EMUX_FX_ENV1_DELAY,	fx_env1_delay},
	{ 5, EMUX_FX_ENV1_ATTACK,fx_env1_attack},
	{ 6, EMUX_FX_ENV1_HOLD,	fx_env1_hold},
	{ 7, EMUX_FX_ENV1_DECAY,	fx_env1_decay},
	{ 8, EMUX_FX_ENV1_SUSTAIN,	fx_env1_sustain},
	{ 9, EMUX_FX_ENV1_RELEASE,	fx_env1_release},

	{10, EMUX_FX_ENV2_DELAY,	fx_env2_delay},
	{11, EMUX_FX_ENV2_ATTACK,	fx_env2_attack},
	{12, EMUX_FX_ENV2_HOLD,	fx_env2_hold},
	{13, EMUX_FX_ENV2_DECAY,	fx_env2_decay},
	{14, EMUX_FX_ENV2_SUSTAIN,	fx_env2_sustain},
	{15, EMUX_FX_ENV2_RELEASE,	fx_env2_release},

	{16, EMUX_FX_INIT_PITCH,	fx_init_pitch},
	{17, EMUX_FX_LFO1_PITCH,	fx_lfo1_pitch},
	{18, EMUX_FX_LFO2_PITCH,	fx_lfo2_pitch},
	{19, EMUX_FX_ENV1_PITCH,	fx_env1_pitch},
	{20, EMUX_FX_LFO1_VOLUME,	fx_lfo1_volume},
	{21, EMUX_FX_CUTOFF,		fx_cutoff},
	{22, EMUX_FX_FILTERQ,	fx_filterQ},
	{23, EMUX_FX_LFO1_CUTOFF,	fx_lfo1_cutoff},
	{24, EMUX_FX_ENV1_CUTOFF,	fx_env1_cutoff},
	{25, EMUX_FX_CHORUS,		fx_chorus},
	{26, EMUX_FX_REVERB,		fx_reverb},
};


/*
 * GS(SC88) NRPN effects; still experimental
 */

/* cutoff: quarter semitone step, max=255 */
static int gs_cutoff(int val)
{
	return (val - 64) * gs_sense[FX_CUTOFF] / 50;
}

/* resonance: 0 to 15(max) */
static int gs_filterQ(int val)
{
	return (val - 64) * gs_sense[FX_RESONANCE] / 50;
}

/* attack: */
static int gs_attack(int val)
{
	return -(val - 64) * gs_sense[FX_ATTACK] / 50;
}

/* decay: */
static int gs_decay(int val)
{
	return -(val - 64) * gs_sense[FX_RELEASE] / 50;
}

/* release: */
static int gs_release(int val)
{
	return -(val - 64) * gs_sense[FX_RELEASE] / 50;
}

/* vibrato freq: 0.042Hz step, max=255 */
static int gs_vib_rate(int val)
{
	return (val - 64) * gs_sense[FX_VIBRATE] / 50;
}

/* vibrato depth: max=127, 1 octave */
static int gs_vib_depth(int val)
{
	return (val - 64) * gs_sense[FX_VIBDEPTH] / 50;
}

/* vibrato delay: -0.725msec step */
static int gs_vib_delay(int val)
{
	return -(val - 64) * gs_sense[FX_VIBDELAY] / 50;
}

static struct nrpn_conv_table gs_effects[] =
{
	{32, EMUX_FX_CUTOFF,	gs_cutoff},
	{33, EMUX_FX_FILTERQ,	gs_filterQ},
	{99, EMUX_FX_ENV2_ATTACK, gs_attack},
	{100, EMUX_FX_ENV2_DECAY, gs_decay},
	{102, EMUX_FX_ENV2_RELEASE, gs_release},
	{8, EMUX_FX_LFO1_FREQ, gs_vib_rate},
	{9, EMUX_FX_LFO1_VOLUME, gs_vib_depth},
	{10, EMUX_FX_LFO1_DELAY, gs_vib_delay},
};


/*
 * NRPN events
 */
void
snd_emux_nrpn(void *p, struct snd_midi_channel *chan,
	      struct snd_midi_channel_set *chset)
{
	struct snd_emux_port *port;

	port = p;
	if (snd_BUG_ON(!port || !chan))
		return;

	if (chan->control[MIDI_CTL_NONREG_PARM_NUM_MSB] == 127 &&
	    chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB] <= 26) {
		int val;
		/* Win/DOS AWE32 specific NRPNs */
		/* both MSB/LSB necessary */
		val = (chan->control[MIDI_CTL_MSB_DATA_ENTRY] << 7) |
			chan->control[MIDI_CTL_LSB_DATA_ENTRY]; 
		val -= 8192;
		send_converted_effect
			(awe_effects, ARRAY_SIZE(awe_effects),
			 port, chan, chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB],
			 val, EMUX_FX_FLAG_SET);
		return;
	}

	if (port->chset.midi_mode == SNDRV_MIDI_MODE_GS &&
	    chan->control[MIDI_CTL_NONREG_PARM_NUM_MSB] == 1) {
		int val;
		/* GS specific NRPNs */
		/* only MSB is valid */
		val = chan->control[MIDI_CTL_MSB_DATA_ENTRY];
		send_converted_effect
			(gs_effects, ARRAY_SIZE(gs_effects),
			 port, chan, chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB],
			 val, EMUX_FX_FLAG_ADD);
		return;
	}
}


/*
 * XG control effects; still experimental
 */

/* cutoff: quarter semitone step, max=255 */
static int xg_cutoff(int val)
{
	return (val - 64) * xg_sense[FX_CUTOFF] / 64;
}

/* resonance: 0(open) to 15(most nasal) */
static int xg_filterQ(int val)
{
	return (val - 64) * xg_sense[FX_RESONANCE] / 64;
}

/* attack: */
static int xg_attack(int val)
{
	return -(val - 64) * xg_sense[FX_ATTACK] / 64;
}

/* release: */
static int xg_release(int val)
{
	return -(val - 64) * xg_sense[FX_RELEASE] / 64;
}

static struct nrpn_conv_table xg_effects[] =
{
	{71, EMUX_FX_CUTOFF,	xg_cutoff},
	{74, EMUX_FX_FILTERQ,	xg_filterQ},
	{72, EMUX_FX_ENV2_RELEASE, xg_release},
	{73, EMUX_FX_ENV2_ATTACK, xg_attack},
};

int
snd_emux_xg_control(struct snd_emux_port *port, struct snd_midi_channel *chan,
		    int param)
{
	return send_converted_effect(xg_effects, ARRAY_SIZE(xg_effects),
				     port, chan, param,
				     chan->control[param],
				     EMUX_FX_FLAG_ADD);
}

/*
 * receive sysex
 */
void
snd_emux_sysex(void *p, unsigned char *buf, int len, int parsed,
	       struct snd_midi_channel_set *chset)
{
	struct snd_emux_port *port;
	struct snd_emux *emu;

	port = p;
	if (snd_BUG_ON(!port || !chset))
		return;
	emu = port->emu;

	switch (parsed) {
	case SNDRV_MIDI_SYSEX_GS_MASTER_VOLUME:
		snd_emux_update_port(port, SNDRV_EMUX_UPDATE_VOLUME);
		break;
	default:
		if (emu->ops.sysex)
			emu->ops.sysex(emu, buf, len, parsed, chset);
		break;
	}
}