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 <linux/string.h>
  26 #include <sound/core.h>
  27 #include <sound/emux_synth.h>
  28 #include <linux/init.h>
  29 #include "emux_voice.h"
  30
  31 MODULE_AUTHOR("Takashi Iwai");
  32 MODULE_DESCRIPTION("Routines for control of EMU WaveTable chip");
  33 MODULE_LICENSE("GPL");
  34
  35 /*
  36  * create a new hardware dependent device for Emu8000/Emu10k1
  37  */
  38 int snd_emux_new(struct snd_emux **remu)
  39 {
  40         struct snd_emux *emu;
  41
  42         *remu = NULL;
  43         emu = kzalloc(sizeof(*emu), GFP_KERNEL);
  44         if (emu == NULL)
  45                 return -ENOMEM;
  46
  47         spin_lock_init(&emu->voice_lock);
  48         mutex_init(&emu->register_mutex);
  49
  50         emu->client = -1;
  51 #ifdef CONFIG_SND_SEQUENCER_OSS
  52         emu->oss_synth = NULL;
  53 #endif
  54         emu->max_voices = 0;
  55         emu->use_time = 0;
  56
  57         init_timer(&emu->tlist);
  58         emu->tlist.function = snd_emux_timer_callback;
  59         emu->tlist.data = (unsigned long)emu;
  60         emu->timer_active = 0;
  61
  62         *remu = emu;
  63         return 0;
  64 }
  65
  66 EXPORT_SYMBOL(snd_emux_new);
  67
  68 /*
  69  */
  70 static int sf_sample_new(void *private_data, struct snd_sf_sample *sp,
  71                                   struct snd_util_memhdr *hdr,
  72                                   const void __user *buf, long count)
  73 {
  74         struct snd_emux *emu = private_data;
  75         return emu->ops.sample_new(emu, sp, hdr, buf, count);
  76
  77 }
  78
  79 static int sf_sample_free(void *private_data, struct snd_sf_sample *sp,
  80                                    struct snd_util_memhdr *hdr)
  81 {
  82         struct snd_emux *emu = private_data;
  83         return emu->ops.sample_free(emu, sp, hdr);
  84
  85 }
  86
  87 static void sf_sample_reset(void *private_data)
  88 {
  89         struct snd_emux *emu = private_data;
  90         emu->ops.sample_reset(emu);
  91 }
  92
  93 int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name)
  94 {
  95         int err;
  96         struct snd_sf_callback sf_cb;
  97
  98         snd_assert(emu->hw != NULL, return -EINVAL);
  99         snd_assert(emu->max_voices > 0, return -EINVAL);
 100         snd_assert(card != NULL, return -EINVAL);
 101         snd_assert(name != NULL, return -EINVAL);
 102
 103         emu->card = card;
 104         emu->name = kstrdup(name, GFP_KERNEL);
 105         emu->voices = kcalloc(emu->max_voices, sizeof(struct snd_emux_voice),
 106                               GFP_KERNEL);
 107         if (emu->voices == NULL)
 108                 return -ENOMEM;
 109
 110         /* create soundfont list */
 111         memset(&sf_cb, 0, sizeof(sf_cb));
 112         sf_cb.private_data = emu;
 113         if (emu->ops.sample_new)
 114                 sf_cb.sample_new = sf_sample_new;
 115         if (emu->ops.sample_free)
 116                 sf_cb.sample_free = sf_sample_free;
 117         if (emu->ops.sample_reset)
 118                 sf_cb.sample_reset = sf_sample_reset;
 119         emu->sflist = snd_sf_new(&sf_cb, emu->memhdr);
 120         if (emu->sflist == NULL)
 121                 return -ENOMEM;
 122
 123         if ((err = snd_emux_init_hwdep(emu)) < 0)
 124                 return err;
 125
 126         snd_emux_init_voices(emu);
 127
 128         snd_emux_init_seq(emu, card, index);
 129 #ifdef CONFIG_SND_SEQUENCER_OSS
 130         snd_emux_init_seq_oss(emu);
 131 #endif
 132         snd_emux_init_virmidi(emu, card);
 133
 134 #ifdef CONFIG_PROC_FS
 135         snd_emux_proc_init(emu, card, index);
 136 #endif
 137         return 0;
 138 }
 139
 140 EXPORT_SYMBOL(snd_emux_register);
 141
 142 /*
 143  */
 144 int snd_emux_free(struct snd_emux *emu)
 145 {
 146         unsigned long flags;
 147
 148         if (! emu)
 149                 return -EINVAL;
 150
 151         spin_lock_irqsave(&emu->voice_lock, flags);
 152         if (emu->timer_active)
 153                 del_timer(&emu->tlist);
 154         spin_unlock_irqrestore(&emu->voice_lock, flags);
 155
 156 #ifdef CONFIG_PROC_FS
 157         snd_emux_proc_free(emu);
 158 #endif
 159         snd_emux_delete_virmidi(emu);
 160 #ifdef CONFIG_SND_SEQUENCER_OSS
 161         snd_emux_detach_seq_oss(emu);
 162 #endif
 163         snd_emux_detach_seq(emu);
 164
 165         snd_emux_delete_hwdep(emu);
 166
 167         if (emu->sflist)
 168                 snd_sf_free(emu->sflist);
 169
 170         kfree(emu->voices);
 171         kfree(emu->name);
 172         kfree(emu);
 173         return 0;
 174 }
 175
 176 EXPORT_SYMBOL(snd_emux_free);
 177
 178
 179 /*
 180  *  INIT part
 181  */
 182
 183 static int __init alsa_emux_init(void)
 184 {
 185         return 0;
 186 }
 187
 188 static void __exit alsa_emux_exit(void)
 189 {
 190 }
 191
 192 module_init(alsa_emux_init)
 193 module_exit(alsa_emux_exit)