aboutsummaryrefslogtreecommitdiffstats
path: root/sound/isa/gus/gus_sample.c
blob: cba0829a71063d6288db36137deda30bd3731aee (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
/*
 *  Routines for Gravis UltraSound soundcards - Sample support
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *
 *
 *   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 <sound/driver.h>
#include <linux/time.h>
#include <sound/core.h>
#include <sound/gus.h>

/*
 *
 */

static void select_instrument(struct snd_gus_card * gus, struct snd_gus_voice * v)
{
	struct snd_seq_kinstr *instr;

#if 0
	printk("select instrument: cluster = %li, std = 0x%x, bank = %i, prg = %i\n",
					v->instr.cluster,
					v->instr.std,
					v->instr.bank,
					v->instr.prg);
#endif
	instr = snd_seq_instr_find(gus->gf1.ilist, &v->instr, 0, 1);
	if (instr != NULL) {
		if (instr->ops) {
			if (!strcmp(instr->ops->instr_type, SNDRV_SEQ_INSTR_ID_SIMPLE))
				snd_gf1_simple_init(v);
		}
		snd_seq_instr_free_use(gus->gf1.ilist, instr);
	}
}

/*
 *
 */

static void event_sample(struct snd_seq_event *ev, struct snd_gus_port *p,
			 struct snd_gus_voice *v)
{
	if (v->sample_ops && v->sample_ops->sample_stop)
		v->sample_ops->sample_stop(p->gus, v, SAMPLE_STOP_IMMEDIATELY);
	v->instr.std = ev->data.sample.param.sample.std;
	if (v->instr.std & 0xff000000) {        /* private instrument */
		v->instr.std &= 0x00ffffff;
		v->instr.std |= (unsigned int)ev->source.client << 24;
	}                                                
	v->instr.bank = ev->data.sample.param.sample.bank;
	v->instr.prg = ev->data.sample.param.sample.prg;
	select_instrument(p->gus, v);
}

static void event_cluster(struct snd_seq_event *ev, struct snd_gus_port *p,
			  struct snd_gus_voice *v)
{
	if (v->sample_ops && v->sample_ops->sample_stop)
		v->sample_ops->sample_stop(p->gus, v, SAMPLE_STOP_IMMEDIATELY);
	v->instr.cluster = ev->data.sample.param.cluster.cluster;
	select_instrument(p->gus, v);
}

static void event_start(struct snd_seq_event *ev, struct snd_gus_port *p,
			struct snd_gus_voice *v)
{
	if (v->sample_ops && v->sample_ops->sample_start)
		v->sample_ops->sample_start(p->gus, v, ev->data.sample.param.position);
}

static void event_stop(struct snd_seq_event *ev, struct snd_gus_port *p,
		       struct snd_gus_voice *v)
{
	if (v->sample_ops && v->sample_ops->sample_stop)
		v->sample_ops->sample_stop(p->gus, v, ev->data.sample.param.stop_mode);
}

static void event_freq(struct snd_seq_event *ev, struct snd_gus_port *p,
		       struct snd_gus_voice *v)
{
	if (v->sample_ops && v->sample_ops->sample_freq)
		v->sample_ops->sample_freq(p->gus, v, ev->data.sample.param.frequency);
}

static void event_volume(struct snd_seq_event *ev, struct snd_gus_port *p,
			 struct snd_gus_voice *v)
{
	if (v->sample_ops && v->sample_ops->sample_volume)
		v->sample_ops->sample_volume(p->gus, v, &ev->data.sample.param.volume);
}

static void event_loop(struct snd_seq_event *ev, struct snd_gus_port *p,
		       struct snd_gus_voice *v)
{
	if (v->sample_ops && v->sample_ops->sample_loop)
		v->sample_ops->sample_loop(p->gus, v, &ev->data.sample.param.loop);
}

static void event_position(struct snd_seq_event *ev, struct snd_gus_port *p,
			   struct snd_gus_voice *v)
{
	if (v->sample_ops && v->sample_ops->sample_pos)
		v->sample_ops->sample_pos(p->gus, v, ev->data.sample.param.position);
}

static void event_private1(struct snd_seq_event *ev, struct snd_gus_port *p,
			   struct snd_gus_voice *v)
{
	if (v->sample_ops && v->sample_ops->sample_private1)
		v->sample_ops->sample_private1(p->gus, v, (unsigned char *)&ev->data.sample.param.raw8);
}

typedef void (gus_sample_event_handler_t)(struct snd_seq_event *ev,
					  struct snd_gus_port *p,
					  struct snd_gus_voice *v);
static gus_sample_event_handler_t *gus_sample_event_handlers[9] = {
	event_sample,
	event_cluster,
	event_start,
	event_stop,
	event_freq,
	event_volume,
	event_loop,
	event_position,
	event_private1
};

void snd_gus_sample_event(struct snd_seq_event *ev, struct snd_gus_port *p)
{
	int idx, voice;
	struct snd_gus_card *gus = p->gus;
	struct snd_gus_voice *v;
	unsigned long flags;
	
	idx = ev->type - SNDRV_SEQ_EVENT_SAMPLE;
	if (idx < 0 || idx > 8)
		return;
	for (voice = 0; voice < 32; voice++) {
		v = &gus->gf1.voices[voice];
		if (v->use && v->client == ev->source.client &&
		    v->port == ev->source.port &&
		    v->index == ev->data.sample.channel) {
		    	spin_lock_irqsave(&gus->event_lock, flags);
			gus_sample_event_handlers[idx](ev, p, v);
			spin_unlock_irqrestore(&gus->event_lock, flags);
			return;
		}
	}
}