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 <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
  46         spin_lock_init(&emu->voice_lock);
  47         mutex_init(&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 EXPORT_SYMBOL(snd_emux_new);
  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
 125         snd_emux_init_voices(emu);
 126
 127         snd_emux_init_seq(emu, card, index);
 128 #ifdef CONFIG_SND_SEQUENCER_OSS
 129         snd_emux_init_seq_oss(emu);
 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
 139 EXPORT_SYMBOL(snd_emux_register);
 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
 158         snd_emux_delete_virmidi(emu);
 159 #ifdef CONFIG_SND_SEQUENCER_OSS
 160         snd_emux_detach_seq_oss(emu);
 161 #endif
 162         snd_emux_detach_seq(emu);
 163
 164         snd_emux_delete_hwdep(emu);
 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
 175 EXPORT_SYMBOL(snd_emux_free);
 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)