1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
use std::{
thread::sleep,
time::{Duration, Instant},
};
use clap::Parser;
use mpris::{DBusError, FindingError, PlaybackStatus, Player, PlayerFinder};
const PLAYER_IDENTITY: &str = "Spotify";
const BROWSER_IDENTITY: &str = "Mozilla zen";
// config
// percentages
const LOWER_VOLUME: u8 = 45;
const NORMAL_VOLUME: u8 = 80;
const VOLUME_TRANSITION: Duration = Duration::from_millis(300);
#[derive(Parser)]
struct Args {
#[arg(
short, long
)]
daemon: bool,
#[arg(
short, long
)]
lower: bool,
#[arg(
short, long
)]
normal: bool,
}
fn get_player() -> Option<Player> {
find_player(PLAYER_IDENTITY)
}
fn get_browser() -> Option<Player> {
find_player(BROWSER_IDENTITY)
}
fn find_player(name: &str) -> Option<Player> {
match PlayerFinder::new()
.expect("Failed to create PlayerFinder")
.find_by_name(name)
{
Ok(p) => Some(p),
Err(e) => {
if let FindingError::DBusError(e) = e {
panic!("DBus err: {e}")
} else {
None
}
}
}
}
fn normalize_volume(volume: f64) -> u8 {
(volume * 100.0) as u8
}
fn denormal_volume(volume: u8) -> f64 {
volume as f64 / 100.0
}
fn set_volume(player: &Player, volume: u8) -> Vec<Result<(), DBusError>> {
let mut res = Vec::new();
let current_volume = normalize_volume(
player
.get_volume()
.unwrap_or_else(|e| panic!("Failed to retrieve {player:#?} volume: {e}")),
);
if volume == current_volume {
return res;
}
let mut intervel = VOLUME_TRANSITION
/ current_volume
.abs_diff(volume)
.into();
let range: Box<dyn Iterator<Item = u8>> = if current_volume > volume {
Box::new((volume..=current_volume).rev())
} else {
Box::new(current_volume..volume)
};
for v in range {
let t = Instant::now();
res.push(player.set_volume(denormal_volume(v)));
intervel = intervel.saturating_sub(t.elapsed());
if !intervel.is_zero() {
sleep(intervel);
}
}
res
}
fn is_playing(player: &Player) -> bool {
player
.get_playback_status()
.map(|s| s == PlaybackStatus::Playing)
.unwrap_or(false)
}
fn daemon() -> ! {
let mut had_browser = false;
loop {
let player = match get_player() {
Some(p) => p,
None => {
sleep(Duration::from_secs(5));
continue;
}
};
match get_browser() {
Some(browser) => {
let is_playing = is_playing(&browser);
if !had_browser && is_playing {
set_lower(&player);
had_browser = true;
} else if had_browser && !is_playing {
set_normal(&player);
had_browser = false;
}
}
None => {
if had_browser {
set_normal(&player);
had_browser = false;
}
}
}
sleep(Duration::from_secs(1));
}
}
fn set_lower(player: &Player) {
set_volume(player, LOWER_VOLUME)
.into_iter()
.for_each(|r| r.unwrap_or_else(|e| eprintln!("Failed to set volume: {e}")));
}
fn set_normal(player: &Player) {
set_volume(player, NORMAL_VOLUME)
.into_iter()
.for_each(|r| r.unwrap_or_else(|e| eprintln!("Failed to set volume: {e}")));
}
fn main() {
let args = Args::parse();
if args.daemon {
daemon()
}
let player = get_player().unwrap_or_else(|| panic!("Player {PLAYER_IDENTITY} not found"));
if args.lower {
set_lower(&player);
return;
} else if args.normal {
set_normal(&player);
return;
}
daemon()
}
|
