122 lines
4.1 KiB
C
122 lines
4.1 KiB
C
/*-
|
|
* Copyright (c) 2021 Christos Margiolis <christos@FreeBSD.org>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef _MIXER_H_
|
|
#define _MIXER_H_
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/soundcard.h>
|
|
|
|
#include <limits.h>
|
|
|
|
#define MIX_ISSET(n,f) (((1U << (n)) & (f)) ? 1 : 0)
|
|
#define MIX_ISDEV(m,n) MIX_ISSET(n, (m)->devmask)
|
|
#define MIX_ISMUTE(m,n) MIX_ISSET(n, (m)->mutemask)
|
|
#define MIX_ISREC(m,n) MIX_ISSET(n, (m)->recmask)
|
|
#define MIX_ISRECSRC(m,n) MIX_ISSET(n, (m)->recsrc)
|
|
|
|
/* Forward declarations */
|
|
struct mixer;
|
|
struct mix_dev;
|
|
|
|
typedef struct mix_ctl mix_ctl_t;
|
|
typedef struct mix_volume mix_volume_t;
|
|
|
|
/* User-defined controls */
|
|
struct mix_ctl {
|
|
struct mix_dev *parent_dev; /* parent device */
|
|
int id; /* control id */
|
|
char name[NAME_MAX]; /* control name */
|
|
int (*mod)(struct mix_dev *, void *); /* modify control values */
|
|
int (*print)(struct mix_dev *, void *); /* print control */
|
|
TAILQ_ENTRY(mix_ctl) ctls;
|
|
};
|
|
|
|
struct mix_dev {
|
|
struct mixer *parent_mixer; /* parent mixer */
|
|
char name[NAME_MAX]; /* device name (e.g "vol") */
|
|
int devno; /* device number */
|
|
struct mix_volume {
|
|
#define MIX_VOLMIN 0.0f
|
|
#define MIX_VOLMAX 1.0f
|
|
#define MIX_VOLNORM(v) ((v) / 100.0f)
|
|
#define MIX_VOLDENORM(v) ((int)((v) * 100.0f + 0.5f))
|
|
float left; /* left volume */
|
|
float right; /* right volume */
|
|
} vol;
|
|
int nctl; /* number of controls */
|
|
TAILQ_HEAD(mix_ctlhead, mix_ctl) ctls; /* control list */
|
|
TAILQ_ENTRY(mix_dev) devs;
|
|
};
|
|
|
|
struct mixer {
|
|
TAILQ_HEAD(mix_devhead, mix_dev) devs; /* device list */
|
|
struct mix_dev *dev; /* selected device */
|
|
oss_mixerinfo mi; /* mixer info */
|
|
oss_card_info ci; /* audio card info */
|
|
char name[NAME_MAX]; /* mixer name (e.g /dev/mixer0) */
|
|
int fd; /* file descriptor */
|
|
int unit; /* audio card unit */
|
|
int ndev; /* number of devices */
|
|
int devmask; /* supported devices */
|
|
#define MIX_MUTE 0x01
|
|
#define MIX_UNMUTE 0x02
|
|
#define MIX_TOGGLEMUTE 0x04
|
|
int mutemask; /* muted devices */
|
|
int recmask; /* recording devices */
|
|
#define MIX_ADDRECSRC 0x01
|
|
#define MIX_REMOVERECSRC 0x02
|
|
#define MIX_SETRECSRC 0x04
|
|
#define MIX_TOGGLERECSRC 0x08
|
|
int recsrc; /* recording sources */
|
|
#define MIX_MODE_MIXER 0x01
|
|
#define MIX_MODE_PLAY 0x02
|
|
#define MIX_MODE_REC 0x04
|
|
int mode; /* dev.pcm.X.mode sysctl */
|
|
int f_default; /* default mixer flag */
|
|
};
|
|
|
|
__BEGIN_DECLS
|
|
|
|
struct mixer *mixer_open(const char *);
|
|
int mixer_close(struct mixer *);
|
|
struct mix_dev *mixer_get_dev(struct mixer *, int);
|
|
struct mix_dev *mixer_get_dev_byname(struct mixer *, const char *);
|
|
int mixer_add_ctl(struct mix_dev *, int, const char *,
|
|
int (*)(struct mix_dev *, void *), int (*)(struct mix_dev *, void *));
|
|
int mixer_add_ctl_s(mix_ctl_t *);
|
|
int mixer_remove_ctl(mix_ctl_t *);
|
|
mix_ctl_t *mixer_get_ctl(struct mix_dev *, int);
|
|
mix_ctl_t *mixer_get_ctl_byname(struct mix_dev *, const char *);
|
|
int mixer_set_vol(struct mixer *, mix_volume_t);
|
|
int mixer_set_mute(struct mixer *, int);
|
|
int mixer_mod_recsrc(struct mixer *, int);
|
|
int mixer_get_dunit(void);
|
|
int mixer_set_dunit(struct mixer *, int);
|
|
int mixer_get_mode(int);
|
|
int mixer_get_nmixers(void);
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* _MIXER_H_ */
|