Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 *  Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>

 *

 *  Routines for control of EMU WaveTable chip

 *

 *   This program is free software; you can redistribute it and/or modify

 *   it under the terms of the GNU General Public License as published by

 *   the Free Software Foundation; either version 2 of the License, or

 *   (at your option) any later version.

 *

 *   This program is distributed in the hope that it will be useful,

 *   but WITHOUT ANY WARRANTY; without even the implied warranty of

 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *   GNU General Public License for more details.

 *

 *   You should have received a copy of the GNU General Public License

 *   along with this program; if not, write to the Free Software

 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

 */

#include <sound/driver.h>

#include <linux/wait.h>

#include <linux/slab.h>

#include <linux/string.h>

#include <sound/core.h>

#include <sound/emux_synth.h>

#include <linux/init.h>

#include "emux_voice.h"

MODULE_AUTHOR("Takashi Iwai");

MODULE_DESCRIPTION("Routines for control of EMU WaveTable chip");

MODULE_LICENSE("GPL");

/*

 * create a new hardware dependent device for Emu8000/Emu10k1

 */

int snd_emux_new(struct snd_emux **remu)

{

        struct snd_emux *emu;

        *remu = NULL;

        emu = kzalloc(sizeof(*emu), GFP_KERNEL);

        if (emu == NULL)

                return -ENOMEM;

        spin_lock_init(&emu->voice_lock);

        mutex_init(&emu->register_mutex);

        emu->client = -1;

#ifdef CONFIG_SND_SEQUENCER_OSS

        emu->oss_synth = NULL;

#endif

        emu->max_voices = 0;

        emu->use_time = 0;

        init_timer(&emu->tlist);

        emu->tlist.function = snd_emux_timer_callback;

        emu->tlist.data = (unsigned long)emu;

        emu->timer_active = 0;

        *remu = emu;

        return 0;

}

EXPORT_SYMBOL(snd_emux_new);

/*

 */

static int sf_sample_new(void *private_data, struct snd_sf_sample *sp,

                                  struct snd_util_memhdr *hdr,

                                  const void __user *buf, long count)

{

        struct snd_emux *emu = private_data;

        return emu->ops.sample_new(emu, sp, hdr, buf, count);

}

static int sf_sample_free(void *private_data, struct snd_sf_sample *sp,

                                   struct snd_util_memhdr *hdr)

{

        struct snd_emux *emu = private_data;

        return emu->ops.sample_free(emu, sp, hdr);

}

static void sf_sample_reset(void *private_data)

{

        struct snd_emux *emu = private_data;

        emu->ops.sample_reset(emu);

}

int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name)

{

        int err;

        struct snd_sf_callback sf_cb;

        snd_assert(emu->hw != NULL, return -EINVAL);

        snd_assert(emu->max_voices > 0, return -EINVAL);

        snd_assert(card != NULL, return -EINVAL);

        snd_assert(name != NULL, return -EINVAL);

        emu->card = card;

        emu->name = kstrdup(name, GFP_KERNEL);

        emu->voices = kcalloc(emu->max_voices, sizeof(struct snd_emux_voice),

                              GFP_KERNEL);

        if (emu->voices == NULL)

                return -ENOMEM;

        /* create soundfont list */

        memset(&sf_cb, 0, sizeof(sf_cb));

        sf_cb.private_data = emu;

        if (emu->ops.sample_new)

                sf_cb.sample_new = sf_sample_new;

        if (emu->ops.sample_free)

                sf_cb.sample_free = sf_sample_free;

        if (emu->ops.sample_reset)

                sf_cb.sample_reset = sf_sample_reset;

        emu->sflist = snd_sf_new(&sf_cb, emu->memhdr);

        if (emu->sflist == NULL)

                return -ENOMEM;

        if ((err = snd_emux_init_hwdep(emu)) < 0)

                return err;

        snd_emux_init_voices(emu);

        snd_emux_init_seq(emu, card, index);

#ifdef CONFIG_SND_SEQUENCER_OSS

        snd_emux_init_seq_oss(emu);

#endif

        snd_emux_init_virmidi(emu, card);

#ifdef CONFIG_PROC_FS

        snd_emux_proc_init(emu, card, index);

#endif

        return 0;

}

EXPORT_SYMBOL(snd_emux_register);

/*

 */

int snd_emux_free(struct snd_emux *emu)

{

        unsigned long flags;

        if (! emu)

                return -EINVAL;

        spin_lock_irqsave(&emu->voice_lock, flags);

        if (emu->timer_active)

                del_timer(&emu->tlist);

        spin_unlock_irqrestore(&emu->voice_lock, flags);

#ifdef CONFIG_PROC_FS

        snd_emux_proc_free(emu);

#endif

        snd_emux_delete_virmidi(emu);

#ifdef CONFIG_SND_SEQUENCER_OSS

        snd_emux_detach_seq_oss(emu);

#endif

        snd_emux_detach_seq(emu);

        snd_emux_delete_hwdep(emu);

        if (emu->sflist)

                snd_sf_free(emu->sflist);

        kfree(emu->voices);

        kfree(emu->name);

        kfree(emu);

        return 0;

}

EXPORT_SYMBOL(snd_emux_free);

/*

 *  INIT part

 */

static int __init alsa_emux_init(void)

{

        return 0;

}

static void __exit alsa_emux_exit(void)

{

}

module_init(alsa_emux_init)

module_exit(alsa_emux_exit)