LXR linux/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
  30MODULE_AUTHOR("Takashi Iwai");
  31MODULE_DESCRIPTION("Routines for control of EMU WaveTable chip");
  32MODULE_LICENSE("GPL");
  33
  34/*
  35 * create a new hardware dependent device for Emu8000/Emu10k1
  36 */
  37int 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
  65EXPORT_SYMBOL(snd_emux_new);
  66
  67/*
  68 */
  69static 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
  78static 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
  86static void sf_sample_reset(void *private_data)
  87{
  88        struct snd_emux *emu = private_data;
  89        emu->ops.sample_reset(emu);
  90}
  91
  92int 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
 139EXPORT_SYMBOL(snd_emux_register);
 140
 141/*
 142 */
 143int 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
 175EXPORT_SYMBOL(snd_emux_free);
 176
 177
 178/*
 179 *  INIT part
 180 */
 181
 182static int __init alsa_emux_init(void)
 183{
 184        return 0;
 185}
 186
 187static void __exit alsa_emux_exit(void)
 188{
 189}
 190
 191module_init(alsa_emux_init)
 192module_exit(alsa_emux_exit)
 193