279 lines
6.9 KiB
C
279 lines
6.9 KiB
C
/*
|
|
* Interface for OSS sequencer emulation
|
|
*
|
|
* Copyright (C) 2000 Uros Bizjak <uros@kss-loka.si>
|
|
*
|
|
* 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 "opl3_voice.h"
|
|
#include <linux/slab.h>
|
|
|
|
static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure);
|
|
static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg);
|
|
static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg);
|
|
static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, const char __user *buf, int offs, int count);
|
|
static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg);
|
|
|
|
/* */
|
|
|
|
static inline mm_segment_t snd_enter_user(void)
|
|
{
|
|
mm_segment_t fs = get_fs();
|
|
set_fs(get_ds());
|
|
return fs;
|
|
}
|
|
|
|
static inline void snd_leave_user(mm_segment_t fs)
|
|
{
|
|
set_fs(fs);
|
|
}
|
|
|
|
/* operators */
|
|
|
|
extern struct snd_midi_op opl3_ops;
|
|
|
|
static struct snd_seq_oss_callback oss_callback = {
|
|
.owner = THIS_MODULE,
|
|
.open = snd_opl3_open_seq_oss,
|
|
.close = snd_opl3_close_seq_oss,
|
|
.ioctl = snd_opl3_ioctl_seq_oss,
|
|
.load_patch = snd_opl3_load_patch_seq_oss,
|
|
.reset = snd_opl3_reset_seq_oss,
|
|
};
|
|
|
|
static int snd_opl3_oss_event_input(struct snd_seq_event *ev, int direct,
|
|
void *private_data, int atomic, int hop)
|
|
{
|
|
struct snd_opl3 *opl3 = private_data;
|
|
|
|
if (ev->type != SNDRV_SEQ_EVENT_OSS)
|
|
snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset);
|
|
return 0;
|
|
}
|
|
|
|
/* ------------------------------ */
|
|
|
|
static void snd_opl3_oss_free_port(void *private_data)
|
|
{
|
|
struct snd_opl3 *opl3 = private_data;
|
|
|
|
snd_midi_channel_free_set(opl3->oss_chset);
|
|
}
|
|
|
|
static int snd_opl3_oss_create_port(struct snd_opl3 * opl3)
|
|
{
|
|
struct snd_seq_port_callback callbacks;
|
|
char name[32];
|
|
int voices, opl_ver;
|
|
|
|
voices = (opl3->hardware < OPL3_HW_OPL3) ?
|
|
MAX_OPL2_VOICES : MAX_OPL3_VOICES;
|
|
opl3->oss_chset = snd_midi_channel_alloc_set(voices);
|
|
if (opl3->oss_chset == NULL)
|
|
return -ENOMEM;
|
|
opl3->oss_chset->private_data = opl3;
|
|
|
|
memset(&callbacks, 0, sizeof(callbacks));
|
|
callbacks.owner = THIS_MODULE;
|
|
callbacks.event_input = snd_opl3_oss_event_input;
|
|
callbacks.private_free = snd_opl3_oss_free_port;
|
|
callbacks.private_data = opl3;
|
|
|
|
opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
|
|
sprintf(name, "OPL%i OSS Port", opl_ver);
|
|
|
|
opl3->oss_chset->client = opl3->seq_client;
|
|
opl3->oss_chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
|
|
SNDRV_SEQ_PORT_CAP_WRITE,
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GM |
|
|
SNDRV_SEQ_PORT_TYPE_HARDWARE |
|
|
SNDRV_SEQ_PORT_TYPE_SYNTHESIZER,
|
|
voices, voices,
|
|
name);
|
|
if (opl3->oss_chset->port < 0) {
|
|
int port;
|
|
port = opl3->oss_chset->port;
|
|
snd_midi_channel_free_set(opl3->oss_chset);
|
|
return port;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* ------------------------------ */
|
|
|
|
/* register OSS synth */
|
|
void snd_opl3_init_seq_oss(struct snd_opl3 *opl3, char *name)
|
|
{
|
|
struct snd_seq_oss_reg *arg;
|
|
struct snd_seq_device *dev;
|
|
|
|
if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS,
|
|
sizeof(struct snd_seq_oss_reg), &dev) < 0)
|
|
return;
|
|
|
|
opl3->oss_seq_dev = dev;
|
|
strlcpy(dev->name, name, sizeof(dev->name));
|
|
arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
|
|
arg->type = SYNTH_TYPE_FM;
|
|
if (opl3->hardware < OPL3_HW_OPL3) {
|
|
arg->subtype = FM_TYPE_ADLIB;
|
|
arg->nvoices = MAX_OPL2_VOICES;
|
|
} else {
|
|
arg->subtype = FM_TYPE_OPL3;
|
|
arg->nvoices = MAX_OPL3_VOICES;
|
|
}
|
|
arg->oper = oss_callback;
|
|
arg->private_data = opl3;
|
|
|
|
if (snd_opl3_oss_create_port(opl3)) {
|
|
/* register to OSS synth table */
|
|
snd_device_register(opl3->card, dev);
|
|
}
|
|
}
|
|
|
|
/* unregister */
|
|
void snd_opl3_free_seq_oss(struct snd_opl3 *opl3)
|
|
{
|
|
if (opl3->oss_seq_dev) {
|
|
/* The instance should have been released in prior */
|
|
opl3->oss_seq_dev = NULL;
|
|
}
|
|
}
|
|
|
|
/* ------------------------------ */
|
|
|
|
/* open OSS sequencer */
|
|
static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure)
|
|
{
|
|
struct snd_opl3 *opl3 = closure;
|
|
int err;
|
|
|
|
snd_assert(arg != NULL, return -ENXIO);
|
|
|
|
if ((err = snd_opl3_synth_setup(opl3)) < 0)
|
|
return err;
|
|
|
|
/* fill the argument data */
|
|
arg->private_data = opl3;
|
|
arg->addr.client = opl3->oss_chset->client;
|
|
arg->addr.port = opl3->oss_chset->port;
|
|
|
|
if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
|
|
return err;
|
|
|
|
opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH;
|
|
return 0;
|
|
}
|
|
|
|
/* close OSS sequencer */
|
|
static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg)
|
|
{
|
|
struct snd_opl3 *opl3;
|
|
|
|
snd_assert(arg != NULL, return -ENXIO);
|
|
opl3 = arg->private_data;
|
|
|
|
snd_opl3_synth_cleanup(opl3);
|
|
|
|
snd_opl3_synth_use_dec(opl3);
|
|
return 0;
|
|
}
|
|
|
|
/* load patch */
|
|
|
|
/* from sound_config.h */
|
|
#define SBFM_MAXINSTR 256
|
|
|
|
static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
|
|
const char __user *buf, int offs, int count)
|
|
{
|
|
struct snd_opl3 *opl3;
|
|
struct sbi_instrument sbi;
|
|
char name[32];
|
|
int err, type;
|
|
|
|
snd_assert(arg != NULL, return -ENXIO);
|
|
opl3 = arg->private_data;
|
|
|
|
if (format == FM_PATCH)
|
|
type = FM_PATCH_OPL2;
|
|
else if (format == OPL3_PATCH)
|
|
type = FM_PATCH_OPL3;
|
|
else
|
|
return -EINVAL;
|
|
|
|
if (count < (int)sizeof(sbi)) {
|
|
snd_printk("FM Error: Patch record too short\n");
|
|
return -EINVAL;
|
|
}
|
|
if (copy_from_user(&sbi, buf, sizeof(sbi)))
|
|
return -EFAULT;
|
|
|
|
if (sbi.channel < 0 || sbi.channel >= SBFM_MAXINSTR) {
|
|
snd_printk("FM Error: Invalid instrument number %d\n",
|
|
sbi.channel);
|
|
return -EINVAL;
|
|
}
|
|
|
|
memset(name, 0, sizeof(name));
|
|
sprintf(name, "Chan%d", sbi.channel);
|
|
|
|
err = snd_opl3_load_patch(opl3, sbi.channel, 127, type, name, NULL,
|
|
sbi.operators);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return sizeof(sbi);
|
|
}
|
|
|
|
/* ioctl */
|
|
static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd,
|
|
unsigned long ioarg)
|
|
{
|
|
struct snd_opl3 *opl3;
|
|
|
|
snd_assert(arg != NULL, return -ENXIO);
|
|
opl3 = arg->private_data;
|
|
switch (cmd) {
|
|
case SNDCTL_FM_LOAD_INSTR:
|
|
snd_printk("OPL3: Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. Fix the program.\n");
|
|
return -EINVAL;
|
|
|
|
case SNDCTL_SYNTH_MEMAVL:
|
|
return 0x7fffffff;
|
|
|
|
case SNDCTL_FM_4OP_ENABLE:
|
|
// handled automatically by OPL instrument type
|
|
return 0;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* reset device */
|
|
static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg)
|
|
{
|
|
struct snd_opl3 *opl3;
|
|
|
|
snd_assert(arg != NULL, return -ENXIO);
|
|
opl3 = arg->private_data;
|
|
|
|
return 0;
|
|
}
|