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