Linux-2.6.12-rc2
[linux-3.10.git] / sound / synth / emux / emux.c
1 /*
2  *  Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
3  *
4  *  Routines for control of EMU WaveTable chip
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
21 #include <sound/driver.h>
22 #include <linux/wait.h>
23 #include <linux/sched.h>
24 #include <linux/slab.h>
25 #include <sound/core.h>
26 #include <sound/emux_synth.h>
27 #include <linux/init.h>
28 #include "emux_voice.h"
29
30 MODULE_AUTHOR("Takashi Iwai");
31 MODULE_DESCRIPTION("Routines for control of EMU WaveTable chip");
32 MODULE_LICENSE("GPL");
33
34 /*
35  * create a new hardware dependent device for Emu8000/Emu10k1
36  */
37 int snd_emux_new(snd_emux_t **remu)
38 {
39         snd_emux_t *emu;
40
41         *remu = NULL;
42         emu = kcalloc(1, sizeof(*emu), GFP_KERNEL);
43         if (emu == NULL)
44                 return -ENOMEM;
45
46         spin_lock_init(&emu->voice_lock);
47         init_MUTEX(&emu->register_mutex);
48
49         emu->client = -1;
50 #ifdef CONFIG_SND_SEQUENCER_OSS
51         emu->oss_synth = NULL;
52 #endif
53         emu->max_voices = 0;
54         emu->use_time = 0;
55
56         init_timer(&emu->tlist);
57         emu->tlist.function = snd_emux_timer_callback;
58         emu->tlist.data = (unsigned long)emu;
59         emu->timer_active = 0;
60
61         *remu = emu;
62         return 0;
63 }
64
65
66 /*
67  */
68 int snd_emux_register(snd_emux_t *emu, snd_card_t *card, int index, char *name)
69 {
70         int err;
71         snd_sf_callback_t sf_cb;
72
73         snd_assert(emu->hw != NULL, return -EINVAL);
74         snd_assert(emu->max_voices > 0, return -EINVAL);
75         snd_assert(card != NULL, return -EINVAL);
76         snd_assert(name != NULL, return -EINVAL);
77
78         emu->card = card;
79         emu->name = snd_kmalloc_strdup(name, GFP_KERNEL);
80         emu->voices = kcalloc(emu->max_voices, sizeof(snd_emux_voice_t), GFP_KERNEL);
81         if (emu->voices == NULL)
82                 return -ENOMEM;
83
84         /* create soundfont list */
85         memset(&sf_cb, 0, sizeof(sf_cb));
86         sf_cb.private_data = emu;
87         sf_cb.sample_new = (snd_sf_sample_new_t)emu->ops.sample_new;
88         sf_cb.sample_free = (snd_sf_sample_free_t)emu->ops.sample_free;
89         sf_cb.sample_reset = (snd_sf_sample_reset_t)emu->ops.sample_reset;
90         emu->sflist = snd_sf_new(&sf_cb, emu->memhdr);
91         if (emu->sflist == NULL)
92                 return -ENOMEM;
93
94         if ((err = snd_emux_init_hwdep(emu)) < 0)
95                 return err;
96
97         snd_emux_init_voices(emu);
98
99         snd_emux_init_seq(emu, card, index);
100 #ifdef CONFIG_SND_SEQUENCER_OSS
101         snd_emux_init_seq_oss(emu);
102 #endif
103         snd_emux_init_virmidi(emu, card);
104
105 #ifdef CONFIG_PROC_FS
106         snd_emux_proc_init(emu, card, index);
107 #endif
108         return 0;
109 }
110
111
112 /*
113  */
114 int snd_emux_free(snd_emux_t *emu)
115 {
116         unsigned long flags;
117
118         if (! emu)
119                 return -EINVAL;
120
121         spin_lock_irqsave(&emu->voice_lock, flags);
122         if (emu->timer_active)
123                 del_timer(&emu->tlist);
124         spin_unlock_irqrestore(&emu->voice_lock, flags);
125
126 #ifdef CONFIG_PROC_FS
127         snd_emux_proc_free(emu);
128 #endif
129         snd_emux_delete_virmidi(emu);
130 #ifdef CONFIG_SND_SEQUENCER_OSS
131         snd_emux_detach_seq_oss(emu);
132 #endif
133         snd_emux_detach_seq(emu);
134
135         snd_emux_delete_hwdep(emu);
136
137         if (emu->sflist)
138                 snd_sf_free(emu->sflist);
139
140         kfree(emu->voices);
141         kfree(emu->name);
142         kfree(emu);
143         return 0;
144 }
145
146
147 EXPORT_SYMBOL(snd_emux_new);
148 EXPORT_SYMBOL(snd_emux_register);
149 EXPORT_SYMBOL(snd_emux_free);
150
151 EXPORT_SYMBOL(snd_emux_terminate_all);
152 EXPORT_SYMBOL(snd_emux_lock_voice);
153 EXPORT_SYMBOL(snd_emux_unlock_voice);
154
155 /* soundfont.c */
156 EXPORT_SYMBOL(snd_sf_linear_to_log);
157
158
159 /*
160  *  INIT part
161  */
162
163 static int __init alsa_emux_init(void)
164 {
165         return 0;
166 }
167
168 static void __exit alsa_emux_exit(void)
169 {
170 }
171
172 module_init(alsa_emux_init)
173 module_exit(alsa_emux_exit)