1/*- 2 * Copyright (c) 2021 Christos Margiolis <christos@FreeBSD.org> 3 * 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: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 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 20 * THE SOFTWARE. 21 */ 22 23#ifndef _MIXER_H_ 24#define _MIXER_H_ 25 26#include <sys/cdefs.h> 27#include <sys/queue.h> 28#include <sys/soundcard.h> 29 30#include <limits.h> 31 32#define MIX_ISSET(n,f) (((1U << (n)) & (f)) ? 1 : 0) 33#define MIX_ISDEV(m,n) MIX_ISSET(n, (m)->devmask) 34#define MIX_ISMUTE(m,n) MIX_ISSET(n, (m)->mutemask) 35#define MIX_ISREC(m,n) MIX_ISSET(n, (m)->recmask) 36#define MIX_ISRECSRC(m,n) MIX_ISSET(n, (m)->recsrc) 37 38/* Forward declarations */ 39struct mixer; 40struct mix_dev; 41 42typedef struct mix_ctl mix_ctl_t; 43typedef struct mix_volume mix_volume_t; 44 45/* User-defined controls */ 46struct mix_ctl { 47 struct mix_dev *parent_dev; /* parent device */ 48 int id; /* control id */ 49 char name[NAME_MAX]; /* control name */ 50 int (*mod)(struct mix_dev *, void *); /* modify control values */ 51 int (*print)(struct mix_dev *, void *); /* print control */ 52 TAILQ_ENTRY(mix_ctl) ctls; 53}; 54 55struct mix_dev { 56 struct mixer *parent_mixer; /* parent mixer */ 57 char name[NAME_MAX]; /* device name (e.g "vol") */ 58 int devno; /* device number */ 59 struct mix_volume { 60#define MIX_VOLMIN 0.0f 61#define MIX_VOLMAX 1.0f 62#define MIX_VOLNORM(v) ((v) / 100.0f) 63#define MIX_VOLDENORM(v) ((int)((v) * 100.0f + 0.5f)) 64 float left; /* left volume */ 65 float right; /* right volume */ 66 } vol; 67 int nctl; /* number of controls */ 68 TAILQ_HEAD(mix_ctlhead, mix_ctl) ctls; /* control list */ 69 TAILQ_ENTRY(mix_dev) devs; 70}; 71 72struct mixer { 73 TAILQ_HEAD(mix_devhead, mix_dev) devs; /* device list */ 74 struct mix_dev *dev; /* selected device */ 75 oss_mixerinfo mi; /* mixer info */ 76 oss_card_info ci; /* audio card info */ 77 char name[NAME_MAX]; /* mixer name (e.g /dev/mixer0) */ 78 int fd; /* file descriptor */ 79 int unit; /* audio card unit */ 80 int ndev; /* number of devices */ 81 int devmask; /* supported devices */ 82#define MIX_MUTE 0x01 83#define MIX_UNMUTE 0x02 84#define MIX_TOGGLEMUTE 0x04 85 int mutemask; /* muted devices */ 86 int recmask; /* recording devices */ 87#define MIX_ADDRECSRC 0x01 88#define MIX_REMOVERECSRC 0x02 89#define MIX_SETRECSRC 0x04 90#define MIX_TOGGLERECSRC 0x08 91 int recsrc; /* recording sources */ 92#define MIX_MODE_MIXER 0x01 93#define MIX_MODE_PLAY 0x02 94#define MIX_MODE_REC 0x04 95 int mode; /* dev.pcm.X.mode sysctl */ 96 int f_default; /* default mixer flag */ 97}; 98 99__BEGIN_DECLS 100 101struct mixer *mixer_open(const char *); 102int mixer_close(struct mixer *); 103struct mix_dev *mixer_get_dev(struct mixer *, int); 104struct mix_dev *mixer_get_dev_byname(struct mixer *, const char *); 105int mixer_add_ctl(struct mix_dev *, int, const char *, 106 int (*)(struct mix_dev *, void *), int (*)(struct mix_dev *, void *)); 107int mixer_add_ctl_s(mix_ctl_t *); 108int mixer_remove_ctl(mix_ctl_t *); 109mix_ctl_t *mixer_get_ctl(struct mix_dev *, int); 110mix_ctl_t *mixer_get_ctl_byname(struct mix_dev *, const char *); 111int mixer_set_vol(struct mixer *, mix_volume_t); 112int mixer_set_mute(struct mixer *, int); 113int mixer_mod_recsrc(struct mixer *, int); 114int mixer_get_dunit(void); 115int mixer_set_dunit(struct mixer *, int); 116int mixer_get_mode(int); 117int mixer_get_nmixers(void); 118int mixer_get_path(char *, size_t, int); 119 120__END_DECLS 121 122#endif /* _MIXER_H_ */ 123