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/*
* ALSA hwdep interface
*
* Copyright (C) 2003 Takashi Iwai
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <stdio.h>
#include <alsa/asoundlib.h>
#include <awe_voice.h>
#include <sys/ioctl.h>
#define SNDRV_EMUX_HWDEP_NAME "Emux WaveTable"
struct sndrv_emux_misc_mode {
int port; /* -1 = all */
int mode;
int value;
int value2; /* reserved */
};
enum {
SNDRV_EMUX_IOCTL_VERSION = _IOR('H', 0x80, unsigned int),
SNDRV_EMUX_IOCTL_LOAD_PATCH = _IOWR('H', 0x81, awe_patch_info),
SNDRV_EMUX_IOCTL_RESET_SAMPLES = _IO('H', 0x82),
SNDRV_EMUX_IOCTL_REMOVE_LAST_SAMPLES = _IO('H', 0x83),
SNDRV_EMUX_IOCTL_MEM_AVAIL = _IOW('H', 0x84, int),
SNDRV_EMUX_IOCTL_MISC_MODE = _IOWR('H', 0x84, struct sndrv_emux_misc_mode),
};
static snd_hwdep_t *hwdep;
static int try_open_emux(char *name)
{
snd_hwdep_info_t *info;
unsigned int version;
if (snd_hwdep_open(&hwdep, name, 0) < 0)
return -1;
snd_hwdep_info_alloca(&info);
if (snd_hwdep_info(hwdep, info) < 0)
goto error;
if (strcmp(snd_hwdep_info_get_name(info), SNDRV_EMUX_HWDEP_NAME))
goto error;
if (snd_hwdep_ioctl(hwdep, SNDRV_EMUX_IOCTL_VERSION, &version) < 0)
goto error;
if ((version >> 16) != 0x01) /* version 1 compatible */
goto error;
return 0;
error:
snd_hwdep_close(hwdep);
hwdep = NULL;
return -1;
}
void seq_alsa_init(char *name)
{
char tmpname[32];
int i;
if (name == NULL || ! *name) {
for (i = 0; i < 8; i++) {
sprintf(tmpname, "hw:%d,2", i);
if (try_open_emux(tmpname) == 0)
return;
}
} else {
if (try_open_emux(name) == 0)
return;
}
fprintf(stderr, "No Emux synth hwdep device is found\n");
exit(1);
}
void seq_alsa_end(void)
{
if (hwdep) {
snd_hwdep_close(hwdep);
hwdep = NULL;
}
}
int seq_reset_samples(void)
{
return snd_hwdep_ioctl(hwdep, SNDRV_EMUX_IOCTL_RESET_SAMPLES, NULL);
}
int seq_remove_samples(void)
{
return snd_hwdep_ioctl(hwdep, SNDRV_EMUX_IOCTL_REMOVE_LAST_SAMPLES, NULL);
}
int seq_load_rawpatch(void *patch, int len)
{
return snd_hwdep_ioctl(hwdep, SNDRV_EMUX_IOCTL_LOAD_PATCH, patch);
}
int seq_load_patch(void *patch, int len)
{
awe_patch_info *p;
p = (awe_patch_info*)patch;
p->key = AWE_PATCH;
p->device_no = 0;
p->sf_id = 0;
return snd_hwdep_ioctl(hwdep, SNDRV_EMUX_IOCTL_LOAD_PATCH, p);
}
int seq_mem_avail(void)
{
int mem_avail = 0;
snd_hwdep_ioctl(hwdep, SNDRV_EMUX_IOCTL_MEM_AVAIL, &mem_avail);
return mem_avail;
}
int seq_zero_atten(int atten)
{
struct sndrv_emux_misc_mode mode;
mode.port = -1;
mode.mode = AWE_MD_ZERO_ATTEN;
mode.value = atten;
mode.value2 = 0;
return snd_hwdep_ioctl(hwdep, SNDRV_EMUX_IOCTL_MISC_MODE, &mode);
}
int seq_set_gus_bank(int bank)
{
struct sndrv_emux_misc_mode mode;
mode.port = -1;
mode.mode = AWE_MD_GUS_BANK;
mode.value = bank;
mode.value2 = 0;
return snd_hwdep_ioctl(hwdep, SNDRV_EMUX_IOCTL_MISC_MODE, &mode);
}
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