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174 lines
3.9 KiB
174 lines
3.9 KiB
20 years ago
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/*
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* Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
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*
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* Routines for control of EMU WaveTable chip
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <sound/driver.h>
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#include <linux/wait.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/emux_synth.h>
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#include <linux/init.h>
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#include "emux_voice.h"
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MODULE_AUTHOR("Takashi Iwai");
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MODULE_DESCRIPTION("Routines for control of EMU WaveTable chip");
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MODULE_LICENSE("GPL");
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/*
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* create a new hardware dependent device for Emu8000/Emu10k1
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*/
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int snd_emux_new(snd_emux_t **remu)
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{
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snd_emux_t *emu;
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*remu = NULL;
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emu = kcalloc(1, sizeof(*emu), GFP_KERNEL);
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if (emu == NULL)
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return -ENOMEM;
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spin_lock_init(&emu->voice_lock);
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init_MUTEX(&emu->register_mutex);
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emu->client = -1;
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#ifdef CONFIG_SND_SEQUENCER_OSS
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emu->oss_synth = NULL;
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#endif
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emu->max_voices = 0;
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emu->use_time = 0;
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init_timer(&emu->tlist);
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emu->tlist.function = snd_emux_timer_callback;
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emu->tlist.data = (unsigned long)emu;
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emu->timer_active = 0;
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*remu = emu;
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return 0;
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}
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/*
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*/
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int snd_emux_register(snd_emux_t *emu, snd_card_t *card, int index, char *name)
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{
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int err;
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snd_sf_callback_t sf_cb;
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snd_assert(emu->hw != NULL, return -EINVAL);
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snd_assert(emu->max_voices > 0, return -EINVAL);
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snd_assert(card != NULL, return -EINVAL);
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snd_assert(name != NULL, return -EINVAL);
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emu->card = card;
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emu->name = snd_kmalloc_strdup(name, GFP_KERNEL);
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emu->voices = kcalloc(emu->max_voices, sizeof(snd_emux_voice_t), GFP_KERNEL);
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if (emu->voices == NULL)
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return -ENOMEM;
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/* create soundfont list */
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memset(&sf_cb, 0, sizeof(sf_cb));
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sf_cb.private_data = emu;
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sf_cb.sample_new = (snd_sf_sample_new_t)emu->ops.sample_new;
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sf_cb.sample_free = (snd_sf_sample_free_t)emu->ops.sample_free;
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sf_cb.sample_reset = (snd_sf_sample_reset_t)emu->ops.sample_reset;
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emu->sflist = snd_sf_new(&sf_cb, emu->memhdr);
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if (emu->sflist == NULL)
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return -ENOMEM;
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if ((err = snd_emux_init_hwdep(emu)) < 0)
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return err;
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snd_emux_init_voices(emu);
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snd_emux_init_seq(emu, card, index);
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#ifdef CONFIG_SND_SEQUENCER_OSS
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snd_emux_init_seq_oss(emu);
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#endif
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snd_emux_init_virmidi(emu, card);
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#ifdef CONFIG_PROC_FS
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snd_emux_proc_init(emu, card, index);
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#endif
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return 0;
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}
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/*
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*/
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int snd_emux_free(snd_emux_t *emu)
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{
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unsigned long flags;
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if (! emu)
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return -EINVAL;
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spin_lock_irqsave(&emu->voice_lock, flags);
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if (emu->timer_active)
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del_timer(&emu->tlist);
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spin_unlock_irqrestore(&emu->voice_lock, flags);
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#ifdef CONFIG_PROC_FS
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snd_emux_proc_free(emu);
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#endif
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snd_emux_delete_virmidi(emu);
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#ifdef CONFIG_SND_SEQUENCER_OSS
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snd_emux_detach_seq_oss(emu);
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#endif
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snd_emux_detach_seq(emu);
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snd_emux_delete_hwdep(emu);
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if (emu->sflist)
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snd_sf_free(emu->sflist);
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kfree(emu->voices);
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kfree(emu->name);
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kfree(emu);
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return 0;
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}
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EXPORT_SYMBOL(snd_emux_new);
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EXPORT_SYMBOL(snd_emux_register);
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EXPORT_SYMBOL(snd_emux_free);
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EXPORT_SYMBOL(snd_emux_terminate_all);
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EXPORT_SYMBOL(snd_emux_lock_voice);
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EXPORT_SYMBOL(snd_emux_unlock_voice);
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/* soundfont.c */
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EXPORT_SYMBOL(snd_sf_linear_to_log);
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/*
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* INIT part
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*/
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static int __init alsa_emux_init(void)
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{
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return 0;
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}
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static void __exit alsa_emux_exit(void)
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{
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}
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module_init(alsa_emux_init)
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module_exit(alsa_emux_exit)
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