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