rs_audio/misc/
effects.rs

1/*!
2The effects module is useful for applying various effects to songs, without doing them manually.<br>
3**Note**: This feature is still underdevelopment.
4*/
5
6use crate::{Note, Song};
7
8pub fn echo(song: &Song, delay: f64, decay: f32) -> Song {
9    let mut echoed_notes = Vec::new();
10
11    for note in &song.notes {
12        echoed_notes.push(note.clone());
13
14        // Add echo
15        if note.dur > delay {
16            let echo_note = Note {
17                vol: note.vol * decay,
18                dur: note.dur - delay,
19                ..*note
20            };
21            echoed_notes.push(echo_note);
22        }
23    }
24
25    Song::new(echoed_notes, song.bpm)
26}
27
28pub fn reverse(song: &Song) -> Song {
29    let mut reversed_notes = song.notes.clone();
30    reversed_notes.reverse();
31    Song::new(reversed_notes, song.bpm)
32}
33
34pub fn speed_up(song: &Song, factor: f64) -> Song {
35    let speed_notes: Vec<Note> = song
36        .notes
37        .iter()
38        .map(|note| Note {
39            dur: note.dur / factor,
40            ..*note
41        })
42        .collect();
43
44    Song::new(speed_notes, song.bpm)
45}
rs_audio/misc/effects.rs

rs_audio/misc/
effects.rs
