vlc/
audio.rs

1// Copyright (c) 2015 T. Okubo
2// This file is part of vlc-rs.
3// Licensed under the MIT license, see the LICENSE file.
4
5use sys;
6use ::MediaPlayer;
7use ::TrackDescription;
8use ::tools::from_cstr;
9
10pub trait MediaPlayerAudioEx {
11    fn get_mute(&self) -> Option<bool>;
12    fn set_mute(&self, bool);
13    fn get_volume(&self) -> i32;
14    fn set_volume(&self, volume: i32) -> Result<(), ()>;
15    fn get_audio_track_description(&self) -> Option<Vec<TrackDescription>>;
16}
17
18impl MediaPlayerAudioEx for MediaPlayer {
19    fn get_mute(&self) -> Option<bool> {
20        let r = unsafe{ sys::libvlc_audio_get_mute(self.ptr) };
21
22        if r == 0 {
23            Some(false)
24        }else if r == -1 {
25            None
26        }else{
27            Some(true)
28        }
29    }
30
31    fn set_mute(&self, status: bool) {
32        unsafe{ sys::libvlc_audio_set_mute(self.ptr, if status { 1 }else{ 0 }) };
33    }
34
35    fn get_volume(&self) -> i32 {
36        unsafe{ sys::libvlc_audio_get_volume(self.ptr) }
37    }
38    fn set_volume(&self, volume: i32) -> Result<(), ()> {
39        unsafe{
40            if sys::libvlc_audio_set_volume(self.ptr, volume) == 0 { Ok(()) }else{ Err(()) }
41        }
42    }
43    fn get_audio_track_description(&self) -> Option<Vec<TrackDescription>> {
44        unsafe{
45            let p0 = sys::libvlc_audio_get_track_description(self.ptr);
46            if p0.is_null() { return None; }
47            let mut td = Vec::new();
48            let mut p = p0;
49
50            while !(*p).p_next.is_null() {
51                td.push(TrackDescription{ id: (*p).i_id, name: from_cstr((*p).psz_name) });
52                p = (*p).p_next;
53            }
54            sys::libvlc_track_description_list_release(p0);
55            Some(td)
56        }
57    }
58
59}
vlc/audio.rs

vlc/
audio.rs
