rawdio 0.14.0

An Audio Engine, inspired by the Web Audio API
Documentation 
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

use crate::{
    effects::{utility::EventProcessorEvent, Channel},
    prelude::*,
};
use std::sync::atomic::{AtomicUsize, Ordering};

pub enum RecorderEventType {
    ReturnBuffer(OwnedAudioBuffer),
    Stop,
    Start,
}

pub struct RecorderEvent {
    pub sequence_number: usize,
    pub time: Timestamp,
    pub event_type: RecorderEventType,
}

pub type RecorderEventTransmitter = Channel::Sender<RecorderEvent>;
pub type RecorderEventReceiver = Channel::Receiver<RecorderEvent>;

fn next_sequence_number() -> usize {
    static SEQUENCE_NUMBER: AtomicUsize = AtomicUsize::new(0);
    SEQUENCE_NUMBER.fetch_add(1, Ordering::Relaxed)
}

impl RecorderEvent {
    pub fn start_now() -> Self {
        Self {
            sequence_number: next_sequence_number(),
            time: Timestamp::zero(),
            event_type: RecorderEventType::Start,
        }
    }

    pub fn stop_now() -> Self {
        Self {
            sequence_number: next_sequence_number(),
            time: Timestamp::zero(),
            event_type: RecorderEventType::Stop,
        }
    }

    pub fn stop_at_time(time: Timestamp) -> Self {
        Self {
            sequence_number: next_sequence_number(),
            time,
            event_type: RecorderEventType::Stop,
        }
    }

    pub fn return_buffer(buffer: OwnedAudioBuffer) -> Self {
        Self {
            sequence_number: next_sequence_number(),
            time: Timestamp::zero(),
            event_type: RecorderEventType::ReturnBuffer(buffer),
        }
    }
}

impl EventProcessorEvent for RecorderEvent {
    fn get_time(&self) -> Timestamp {
        self.time
    }

    fn should_clear_queue(&self) -> bool {
        false
    }

    fn sequence_number(&self) -> usize {
        self.sequence_number
    }
}