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Diffstat (limited to 'lib/libmixer/mixer.h')
| -rw-r--r-- | lib/libmixer/mixer.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/lib/libmixer/mixer.h b/lib/libmixer/mixer.h new file mode 100644 index 000000000000..80a4b5c91a82 --- /dev/null +++ b/lib/libmixer/mixer.h @@ -0,0 +1,122 @@ +/*- + * 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); +int mixer_get_path(char *, size_t, int); + +__END_DECLS + +#endif /* _MIXER_H_ */ |