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
use ffi;
use ::MediaPlayer;
use ::TrackDescription;
use ::tools::from_cstr;
pub trait MediaPlayerAudioEx {
fn get_mute(&self) -> Option<bool>;
fn set_mute(&self, bool);
fn get_volume(&self) -> i32;
fn set_volume(&self, volume: i32) -> Result<(), ()>;
fn get_audio_track_description(&self) -> Option<Vec<TrackDescription>>;
}
impl MediaPlayerAudioEx for MediaPlayer {
fn get_mute(&self) -> Option<bool> {
let r = unsafe{ ffi::libvlc_audio_get_mute(self.ptr) };
if r == 0 {
Some(false)
}else if r == -1 {
None
}else{
Some(true)
}
}
fn set_mute(&self, status: bool) {
unsafe{ ffi::libvlc_audio_set_mute(self.ptr, if status { 1 }else{ 0 }) };
}
fn get_volume(&self) -> i32 {
unsafe{ ffi::libvlc_audio_get_volume(self.ptr) }
}
fn set_volume(&self, volume: i32) -> Result<(), ()> {
unsafe{
if ffi::libvlc_audio_set_volume(self.ptr, volume) == 0 { Ok(()) }else{ Err(()) }
}
}
fn get_audio_track_description(&self) -> Option<Vec<TrackDescription>> {
unsafe{
let p0 = ffi::libvlc_audio_get_track_description(self.ptr);
if p0.is_null() { return None; }
let mut td = Vec::new();
let mut p = p0;
while !(*p).p_next.is_null() {
td.push(TrackDescription{ id: (*p).i_id, name: from_cstr((*p).psz_name) });
p = (*p).p_next;
}
ffi::libvlc_track_description_list_release(p0);
Some(td)
}
}
}