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