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emux.c
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1 /*
2  * Copyright (C) 2000 Takashi Iwai <[email protected]>
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 <linux/wait.h>
22 #include <linux/slab.h>
23 #include <linux/string.h>
24 #include <sound/core.h>
25 #include <sound/emux_synth.h>
26 #include <linux/init.h>
27 #include <linux/module.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(struct snd_emux **remu)
38 {
39  struct snd_emux *emu;
40 
41  *remu = NULL;
42  emu = kzalloc(sizeof(*emu), GFP_KERNEL);
43  if (emu == NULL)
44  return -ENOMEM;
45 
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 
66 
67 /*
68  */
69 static int sf_sample_new(void *private_data, struct snd_sf_sample *sp,
70  struct snd_util_memhdr *hdr,
71  const void __user *buf, long count)
72 {
73  struct snd_emux *emu = private_data;
74  return emu->ops.sample_new(emu, sp, hdr, buf, count);
75 
76 }
77 
78 static int sf_sample_free(void *private_data, struct snd_sf_sample *sp,
79  struct snd_util_memhdr *hdr)
80 {
81  struct snd_emux *emu = private_data;
82  return emu->ops.sample_free(emu, sp, hdr);
83 
84 }
85 
86 static void sf_sample_reset(void *private_data)
87 {
88  struct snd_emux *emu = private_data;
89  emu->ops.sample_reset(emu);
90 }
91 
92 int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name)
93 {
94  int err;
95  struct snd_sf_callback sf_cb;
96 
97  if (snd_BUG_ON(!emu->hw || emu->max_voices <= 0))
98  return -EINVAL;
99  if (snd_BUG_ON(!card || !name))
100  return -EINVAL;
101 
102  emu->card = card;
103  emu->name = kstrdup(name, GFP_KERNEL);
104  emu->voices = kcalloc(emu->max_voices, sizeof(struct snd_emux_voice),
105  GFP_KERNEL);
106  if (emu->voices == NULL)
107  return -ENOMEM;
108 
109  /* create soundfont list */
110  memset(&sf_cb, 0, sizeof(sf_cb));
111  sf_cb.private_data = emu;
112  if (emu->ops.sample_new)
113  sf_cb.sample_new = sf_sample_new;
114  if (emu->ops.sample_free)
115  sf_cb.sample_free = sf_sample_free;
116  if (emu->ops.sample_reset)
117  sf_cb.sample_reset = sf_sample_reset;
118  emu->sflist = snd_sf_new(&sf_cb, emu->memhdr);
119  if (emu->sflist == NULL)
120  return -ENOMEM;
121 
122  if ((err = snd_emux_init_hwdep(emu)) < 0)
123  return err;
124 
126 
127  snd_emux_init_seq(emu, card, index);
128 #ifdef CONFIG_SND_SEQUENCER_OSS
130 #endif
131  snd_emux_init_virmidi(emu, card);
132 
133 #ifdef CONFIG_PROC_FS
134  snd_emux_proc_init(emu, card, index);
135 #endif
136  return 0;
137 }
138 
140 
141 /*
142  */
143 int snd_emux_free(struct snd_emux *emu)
144 {
145  unsigned long flags;
146 
147  if (! emu)
148  return -EINVAL;
149 
150  spin_lock_irqsave(&emu->voice_lock, flags);
151  if (emu->timer_active)
152  del_timer(&emu->tlist);
153  spin_unlock_irqrestore(&emu->voice_lock, flags);
154 
155 #ifdef CONFIG_PROC_FS
156  snd_emux_proc_free(emu);
157 #endif
159 #ifdef CONFIG_SND_SEQUENCER_OSS
161 #endif
162  snd_emux_detach_seq(emu);
163 
165 
166  if (emu->sflist)
167  snd_sf_free(emu->sflist);
168 
169  kfree(emu->voices);
170  kfree(emu->name);
171  kfree(emu);
172  return 0;
173 }
174 
176 
177 
178 /*
179  * INIT part
180  */
181 
182 static int __init alsa_emux_init(void)
183 {
184  return 0;
185 }
186 
187 static void __exit alsa_emux_exit(void)
188 {
189 }
190 
191 module_init(alsa_emux_init)
192 module_exit(alsa_emux_exit)