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        setup_timer(&emu->tlist, snd_emux_timer_callback, (unsigned long)emu);
  57        emu->timer_active = 0;
  58
  59        *remu = emu;
  60        return 0;
  61}
  62
  63EXPORT_SYMBOL(snd_emux_new);
  64
  65/*
  66 */
  67static int sf_sample_new(void *private_data, struct snd_sf_sample *sp,
  68                                  struct snd_util_memhdr *hdr,
  69                                  const void __user *buf, long count)
  70{
  71        struct snd_emux *emu = private_data;
  72        return emu->ops.sample_new(emu, sp, hdr, buf, count);
  73        
  74}
  75
  76static int sf_sample_free(void *private_data, struct snd_sf_sample *sp,
  77                                   struct snd_util_memhdr *hdr)
  78{
  79        struct snd_emux *emu = private_data;
  80        return emu->ops.sample_free(emu, sp, hdr);
  81        
  82}
  83
  84static void sf_sample_reset(void *private_data)
  85{
  86        struct snd_emux *emu = private_data;
  87        emu->ops.sample_reset(emu);
  88}
  89
  90int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name)
  91{
  92        int err;
  93        struct snd_sf_callback sf_cb;
  94
  95        if (snd_BUG_ON(!emu->hw || emu->max_voices <= 0))
  96                return -EINVAL;
  97        if (snd_BUG_ON(!card || !name))
  98                return -EINVAL;
  99
 100        emu->card = card;
 101        emu->name = kstrdup(name, GFP_KERNEL);
 102        emu->voices = kcalloc(emu->max_voices, sizeof(struct snd_emux_voice),
 103                              GFP_KERNEL);
 104        if (emu->voices == NULL)
 105                return -ENOMEM;
 106
 107        /* create soundfont list */
 108        memset(&sf_cb, 0, sizeof(sf_cb));
 109        sf_cb.private_data = emu;
 110        if (emu->ops.sample_new)
 111                sf_cb.sample_new = sf_sample_new;
 112        if (emu->ops.sample_free)
 113                sf_cb.sample_free = sf_sample_free;
 114        if (emu->ops.sample_reset)
 115                sf_cb.sample_reset = sf_sample_reset;
 116        emu->sflist = snd_sf_new(&sf_cb, emu->memhdr);
 117        if (emu->sflist == NULL)
 118                return -ENOMEM;
 119
 120        if ((err = snd_emux_init_hwdep(emu)) < 0)
 121                return err;
 122
 123        snd_emux_init_voices(emu);
 124
 125        snd_emux_init_seq(emu, card, index);
 126#ifdef CONFIG_SND_SEQUENCER_OSS
 127        snd_emux_init_seq_oss(emu);
 128#endif
 129        snd_emux_init_virmidi(emu, card);
 130
 131        snd_emux_proc_init(emu, card, index);
 132        return 0;
 133}
 134
 135EXPORT_SYMBOL(snd_emux_register);
 136
 137/*
 138 */
 139int snd_emux_free(struct snd_emux *emu)
 140{
 141        unsigned long flags;
 142
 143        if (! emu)
 144                return -EINVAL;
 145
 146        spin_lock_irqsave(&emu->voice_lock, flags);
 147        if (emu->timer_active)
 148                del_timer(&emu->tlist);
 149        spin_unlock_irqrestore(&emu->voice_lock, flags);
 150
 151        snd_emux_proc_free(emu);
 152        snd_emux_delete_virmidi(emu);
 153#ifdef CONFIG_SND_SEQUENCER_OSS
 154        snd_emux_detach_seq_oss(emu);
 155#endif
 156        snd_emux_detach_seq(emu);
 157        snd_emux_delete_hwdep(emu);
 158        snd_sf_free(emu->sflist);
 159        kfree(emu->voices);
 160        kfree(emu->name);
 161        kfree(emu);
 162        return 0;
 163}
 164
 165EXPORT_SYMBOL(snd_emux_free);
 166
 167
 168/*
 169 *  INIT part
 170 */
 171
 172static int __init alsa_emux_init(void)
 173{
 174        return 0;
 175}
 176
 177static void __exit alsa_emux_exit(void)
 178{
 179}
 180
 181module_init(alsa_emux_init)
 182module_exit(alsa_emux_exit)
 183