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(snd_emux_t **remu)
  39 {
  40         snd_emux_t *emu;
  41
  42         *remu = NULL;
  43         emu = kcalloc(1, sizeof(*emu), GFP_KERNEL);
  44         if (emu == NULL)
  45                 return -ENOMEM;
  46
  47         spin_lock_init(&emu->voice_lock);
  48         init_MUTEX(&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
  67 /*
  68  */
  69 int snd_emux_register(snd_emux_t *emu, snd_card_t *card, int index, char *name)
  70 {
  71         int err;
  72         snd_sf_callback_t sf_cb;
  73
  74         snd_assert(emu->hw != NULL, return -EINVAL);
  75         snd_assert(emu->max_voices > 0, return -EINVAL);
  76         snd_assert(card != NULL, return -EINVAL);
  77         snd_assert(name != NULL, return -EINVAL);
  78
  79         emu->card = card;
  80         emu->name = kstrdup(name, GFP_KERNEL);
  81         emu->voices = kcalloc(emu->max_voices, sizeof(snd_emux_voice_t), GFP_KERNEL);
  82         if (emu->voices == NULL)
  83                 return -ENOMEM;
  84
  85         /* create soundfont list */
  86         memset(&sf_cb, 0, sizeof(sf_cb));
  87         sf_cb.private_data = emu;
  88         sf_cb.sample_new = (snd_sf_sample_new_t)emu->ops.sample_new;
  89         sf_cb.sample_free = (snd_sf_sample_free_t)emu->ops.sample_free;
  90         sf_cb.sample_reset = (snd_sf_sample_reset_t)emu->ops.sample_reset;
  91         emu->sflist = snd_sf_new(&sf_cb, emu->memhdr);
  92         if (emu->sflist == NULL)
  93                 return -ENOMEM;
  94
  95         if ((err = snd_emux_init_hwdep(emu)) < 0)
  96                 return err;
  97
  98         snd_emux_init_voices(emu);
  99
 100         snd_emux_init_seq(emu, card, index);
 101 #ifdef CONFIG_SND_SEQUENCER_OSS
 102         snd_emux_init_seq_oss(emu);
 103 #endif
 104         snd_emux_init_virmidi(emu, card);
 105
 106 #ifdef CONFIG_PROC_FS
 107         snd_emux_proc_init(emu, card, index);
 108 #endif
 109         return 0;
 110 }
 111
 112
 113 /*
 114  */
 115 int snd_emux_free(snd_emux_t *emu)
 116 {
 117         unsigned long flags;
 118
 119         if (! emu)
 120                 return -EINVAL;
 121
 122         spin_lock_irqsave(&emu->voice_lock, flags);
 123         if (emu->timer_active)
 124                 del_timer(&emu->tlist);
 125         spin_unlock_irqrestore(&emu->voice_lock, flags);
 126
 127 #ifdef CONFIG_PROC_FS
 128         snd_emux_proc_free(emu);
 129 #endif
 130         snd_emux_delete_virmidi(emu);
 131 #ifdef CONFIG_SND_SEQUENCER_OSS
 132         snd_emux_detach_seq_oss(emu);
 133 #endif
 134         snd_emux_detach_seq(emu);
 135
 136         snd_emux_delete_hwdep(emu);
 137
 138         if (emu->sflist)
 139                 snd_sf_free(emu->sflist);
 140
 141         kfree(emu->voices);
 142         kfree(emu->name);
 143         kfree(emu);
 144         return 0;
 145 }
 146
 147
 148 EXPORT_SYMBOL(snd_emux_new);
 149 EXPORT_SYMBOL(snd_emux_register);
 150 EXPORT_SYMBOL(snd_emux_free);
 151
 152 EXPORT_SYMBOL(snd_emux_terminate_all);
 153 EXPORT_SYMBOL(snd_emux_lock_voice);
 154 EXPORT_SYMBOL(snd_emux_unlock_voice);
 155
 156 /* soundfont.c */
 157 EXPORT_SYMBOL(snd_sf_linear_to_log);
 158
 159
 160 /*
 161  *  INIT part
 162  */
 163
 164 static int __init alsa_emux_init(void)
 165 {
 166         return 0;
 167 }
 168
 169 static void __exit alsa_emux_exit(void)
 170 {
 171 }
 172
 173 module_init(alsa_emux_init)
 174 module_exit(alsa_emux_exit)