2 * Copyright (c) 2021 Christos Margiolis <christos@FreeBSD.org>
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
28 #include <sys/cdefs.h>
29 #include <sys/queue.h>
30 #include <sys/soundcard.h>
34 #define MIX_ISSET(n,f) (((1U << (n)) & (f)) ? 1 : 0)
35 #define MIX_ISDEV(m,n) MIX_ISSET(n, (m)->devmask)
36 #define MIX_ISMUTE(m,n) MIX_ISSET(n, (m)->mutemask)
37 #define MIX_ISREC(m,n) MIX_ISSET(n, (m)->recmask)
38 #define MIX_ISRECSRC(m,n) MIX_ISSET(n, (m)->recsrc)
40 /* Forward declarations */
44 typedef struct mix_ctl mix_ctl_t;
45 typedef struct mix_volume mix_volume_t;
47 /* User-defined controls */
49 struct mix_dev *parent_dev; /* parent device */
50 int id; /* control id */
51 char name[NAME_MAX]; /* control name */
52 int (*mod)(struct mix_dev *, void *); /* modify control values */
53 int (*print)(struct mix_dev *, void *); /* print control */
54 TAILQ_ENTRY(mix_ctl) ctls;
58 struct mixer *parent_mixer; /* parent mixer */
59 char name[NAME_MAX]; /* device name (e.g "vol") */
60 int devno; /* device number */
62 #define MIX_VOLMIN 0.0f
63 #define MIX_VOLMAX 1.0f
64 #define MIX_VOLNORM(v) ((v) / 100.0f)
65 #define MIX_VOLDENORM(v) ((int)((v) * 100.0f + 0.5f))
66 float left; /* left volume */
67 float right; /* right volume */
69 int nctl; /* number of controls */
70 TAILQ_HEAD(mix_ctlhead, mix_ctl) ctls; /* control list */
71 TAILQ_ENTRY(mix_dev) devs;
75 TAILQ_HEAD(mix_devhead, mix_dev) devs; /* device list */
76 struct mix_dev *dev; /* selected device */
77 oss_mixerinfo mi; /* mixer info */
78 oss_card_info ci; /* audio card info */
79 char name[NAME_MAX]; /* mixer name (e.g /dev/mixer0) */
80 int fd; /* file descriptor */
81 int unit; /* audio card unit */
82 int ndev; /* number of devices */
83 int devmask; /* supported devices */
85 #define MIX_UNMUTE 0x02
86 #define MIX_TOGGLEMUTE 0x04
87 int mutemask; /* muted devices */
88 int recmask; /* recording devices */
89 #define MIX_ADDRECSRC 0x01
90 #define MIX_REMOVERECSRC 0x02
91 #define MIX_SETRECSRC 0x04
92 #define MIX_TOGGLERECSRC 0x08
93 int recsrc; /* recording sources */
94 #define MIX_MODE_MIXER 0x01
95 #define MIX_MODE_PLAY 0x02
96 #define MIX_MODE_REC 0x04
97 int mode; /* dev.pcm.X.mode sysctl */
98 int f_default; /* default mixer flag */
103 struct mixer *mixer_open(const char *);
104 int mixer_close(struct mixer *);
105 struct mix_dev *mixer_get_dev(struct mixer *, int);
106 struct mix_dev *mixer_get_dev_byname(struct mixer *, const char *);
107 int mixer_add_ctl(struct mix_dev *, int, const char *,
108 int (*)(struct mix_dev *, void *), int (*)(struct mix_dev *, void *));
109 int mixer_add_ctl_s(mix_ctl_t *);
110 int mixer_remove_ctl(mix_ctl_t *);
111 mix_ctl_t *mixer_get_ctl(struct mix_dev *, int);
112 mix_ctl_t *mixer_get_ctl_byname(struct mix_dev *, const char *);
113 int mixer_set_vol(struct mixer *, mix_volume_t);
114 int mixer_set_mute(struct mixer *, int);
115 int mixer_mod_recsrc(struct mixer *, int);
116 int mixer_get_dunit(void);
117 int mixer_set_dunit(struct mixer *, int);
118 int mixer_get_mode(int);
119 int mixer_get_nmixers(void);
123 #endif /* _MIXER_H_ */