bevy_fundsp 0.4.0

A Bevy plugin that integrates FunDSP into Bevy.
Documentation 
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//! Implementation to integrate `bevy_fundsp` into `bevy_audio`.

use {
    super::Backend,
    crate::dsp_source::{DspSource, IterMono},
    bevy::{
        audio::AddAudioSource,
        prelude::{App, AudioSource, Decodable},
    },
};

/// The backend for `bevy_audio`.
#[allow(clippy::module_name_repetitions)]
pub struct BevyAudioBackend;

impl Decodable for DspSource {
    type Decoder = IterMono;
    type DecoderItem = f32;

    fn decoder(&self) -> Self::Decoder {
        self.clone().into_iter().into_mono()
    }
}

impl rodio::Source for IterMono {
    fn current_frame_len(&self) -> Option<usize> {
        None
    }

    fn channels(&self) -> u16 {
        1
    }

    #[allow(clippy::cast_sign_loss, clippy::cast_possible_truncation)]
    fn sample_rate(&self) -> u32 {
        self.0.sample_rate as u32
    }

    fn total_duration(&self) -> Option<std::time::Duration> {
        None
    }
}

impl Backend for BevyAudioBackend {
    type StaticAudioSource = AudioSource;

    fn init_app(app: &mut App) {
        app.add_audio_source::<DspSource>();
    }

    fn convert_to_audio_source(
        dsp_source: crate::dsp_source::DspSource,
    ) -> Self::StaticAudioSource {
        let bytes = dsp_source.to_bytes().into();

        AudioSource { bytes }
    }
}

// fn play_queued_audio

// impl DspAudioExt for Audio<AudioSource> {
//     type Assets = Assets<AudioSource>;
//     type Settings = PlaybackSettings;
//     // type Sink = Handle<AudioSink>;

//     fn play_dsp_with_settings(
//         &mut self,
//         assets: &mut Self::Assets,
//         source: &DspSource,
//         settings: Self::Settings,
//     ) -> Self::Sink {
//         let audio = BevyAudioBackend::convert_to_audio_source(source.clone());
//         let handle = assets.add(audio);
//         self.play_with_settings(handle, settings)
//     }
// }

// impl DspAudioExt for DspSource {
//     type Assets = Assets<DspSource>;
//     type Settings = PlaybackSettings;
//     type Sink = AudioSink;

//     fn play_dsp_with_settings(
//         &mut self,
//         assets: &mut Self::Assets,
//         source: &DspSource,
//         settings: Self::Settings,
//     ) -> Self::Sink {
//         let handle = assets.add(source.clone());
//         self.play_with_settings(handle, settings)
//     }
// }