3d774d5ef0
Currently OSS sequencer emulation is tied with ALSA sequencer core, both are built in the same level; i.e. when CONFIG_SND_SEQUENCER=y, the OSS sequencer emulation is also always built-in, even though the functionality can be built as an individual module. This patch changes the rule and allows users to build snd-seq-oss module while others are built-in. Essentially, it's just a few simple changes in Kconfig and Makefile. Some driver codes like opl3 need to convert from the simple ifdef to IS_ENABLED(). But that's all. You might wonder how about the dependency: right, it can be messy, but it still works. Since we rewrote the sequencer binding with the standard bus, the driver can be bound at any time on demand. So, the synthesizer driver module can be loaded individually from the OSS emulation core before/after it. Signed-off-by: Takashi Iwai <tiwai@suse.de>
183 lines
4.1 KiB
C
183 lines
4.1 KiB
C
/*
|
|
* 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 <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 <linux/module.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;
|
|
#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
|
|
emu->oss_synth = NULL;
|
|
#endif
|
|
emu->max_voices = 0;
|
|
emu->use_time = 0;
|
|
|
|
setup_timer(&emu->tlist, snd_emux_timer_callback, (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;
|
|
|
|
if (snd_BUG_ON(!emu->hw || emu->max_voices <= 0))
|
|
return -EINVAL;
|
|
if (snd_BUG_ON(!card || !name))
|
|
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);
|
|
#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
|
|
snd_emux_init_seq_oss(emu);
|
|
#endif
|
|
snd_emux_init_virmidi(emu, card);
|
|
|
|
snd_emux_proc_init(emu, card, index);
|
|
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);
|
|
|
|
snd_emux_proc_free(emu);
|
|
snd_emux_delete_virmidi(emu);
|
|
#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
|
|
snd_emux_detach_seq_oss(emu);
|
|
#endif
|
|
snd_emux_detach_seq(emu);
|
|
snd_emux_delete_hwdep(emu);
|
|
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)
|