track

use superb::primitives::buffers::PlanarBuffer;
use superb::primitives::session::{Input, TrackKind};
use superb::primitives::{Result, SampleRate, TimePosition};
use superb::{clip, session, track, transport};

fn main() -> Result<()> {
    let rate = SampleRate::HZ_48K;
    let mut session = session::create(std::env::temp_dir().join("tracks"), rate, 256)?;
    let vox = track::add(&mut session, "vox", TrackKind::Audio)?;
    let keys = track::add(&mut session, "keys", TrackKind::Midi)?;
    let room = track::add(&mut session, "room", TrackKind::Bus)?;

    let mut tone = PlanarBuffer::new(2, rate.hz() as usize);
    tone.fill(0.25);
    session.audio.insert("audio/tone.wav", tone);
    clip::add(&mut session, vox, "audio/tone.wav", TimePosition::ZERO)?;

    for db in [-2.0, -4.0, -6.0] {
        track::volume(&mut session, vox, db)?;     // one undo step: moves within half a second merge
    }
    track::pan(&mut session, vox, -0.3)?;          // a little left
    track::route(&mut session, vox, Some(room))?;  // vox → room bus → master
    track::volume(&mut session, room, -3.0)?;

    track::mute(&mut session, keys, true)?;        // state: saved, not an undo step
    track::arm(&mut session, vox, true)?;
    track::input(&mut session, vox, Some(Input::Mono(0)))?;
    track::monitor(&mut session, keys, true)?;     // keys sounds when MIDI arrives
    track::midi_channel(&mut session, keys, Some(0))?;

    transport::start(&mut session)?;
    session::steps::render_blocks(&mut session, 8)?;
    if let Some([l, r]) = track::peak(&session, room) {
        println!("room: L {l:.3} R {r:.3}");
    }

    track::rename(&mut session, vox, "lead vocal")?;
    track::color(&mut session, vox, Some(0xff8800))?;
    track::move_to(&mut session, keys, 0)?;        // first in the list
    track::archive(&mut session, keys)?;           // off the mixer, kept with its clips
    track::restore(&mut session, keys)?;
    Ok(())
}