wip: refactor: cli, snd, tui

Cargo.lock

@@ -2661,22 +2661,20 @@ checksum = "61c41af27dd6d1e27b1b16b489db798443478cef1f06a660c96db617ba5de3b1"
 name = "tek_api"
 version = "0.1.0"
 dependencies = [
+ "livi",
+ "symphonia",
  "tek_core",
  "uuid",
+ "vst",
 ]
 
 [[package]]
-name = "tek_app"
+name = "tek_cli"
 version = "0.1.0"
 dependencies = [
- "livi",
- "suil-rs",
- "symphonia",
  "tek_api",
  "tek_core",
- "vst",
- "wavers",
- "winit",
+ "tek_tui",
 ]
 
 [[package]]
@@ -2695,32 +2693,31 @@ dependencies = [
  "palette",
  "rand",
  "ratatui",
- "tek_mixer",
- "tek_sequencer",
  "toml",
 ]
 
 [[package]]
-name = "tek_mixer"
+name = "tek_snd"
+version = "0.1.0"
+dependencies = [
+ "tek_api",
+ "tek_core",
+]
+
+[[package]]
+name = "tek_tui"
 version = "0.1.0"
 dependencies = [
  "livi",
  "suil-rs",
  "symphonia",
+ "tek_api",
  "tek_core",
  "vst",
  "wavers",
  "winit",
 ]
 
-[[package]]
-name = "tek_sequencer"
-version = "0.1.0"
-dependencies = [
- "tek_core",
- "uuid",
-]
-
 [[package]]
 name = "thiserror"
 version = "1.0.63"

Cargo.toml

@@ -2,6 +2,8 @@
 resolver = "2"
 members = [
   "crates/tek_core",
+  "crates/tek_snd",
   "crates/tek_api",
-  "crates/tek_app"
+  "crates/tek_cli",
+  "crates/tek_tui"
 ]

crates/tek/Cargo.toml

@@ -8,8 +8,8 @@ clojure-reader = "0.1.0"
 microxdg = "0.1.2"
 
 tek_core = { path = "../tek_core" }
-tek_sequencer = { path = "../tek_sequencer" }
-tek_mixer = { path = "../tek_mixer" }
+#tek_sequencer = { path = "../tek_sequencer" }
+#tek_mixer = { path = "../tek_mixer" }
 #jack = "0.10"
 #crossterm = "0.27"
 #ratatui = { version = "0.26.3", features = [ "unstable-widget-ref", "underline-color" ] }

crates/tek_api/Cargo.toml

@@ -6,3 +6,6 @@ version = "0.1.0"
 [dependencies]
 tek_core = { path = "../tek_core" }
 uuid = { version = "1.10.0", features = [ "v4" ] }
+vst = "0.4.0"
+livi = "0.7.4"
+symphonia = { version = "0.5.4", features = [ "all" ] }

crates/tek_api/src/api_edn.rs

@@ -1,4 +1,5 @@
 use crate::*;
+use crate::midly::num::u7;
 
 impl Scene {
     pub fn from_edn <'a, 'e> (args: &[Edn<'e>]) -> Usually<Self> {
@@ -26,29 +27,29 @@ impl Scene {
     }
 }
 
-const SYM_NAME:    &'static str = ":name";
-const SYM_GAIN:    &'static str = ":gain";
-const SYM_SAMPLER: &'static str = "sampler";
-const SYM_LV2:     &'static str = "lv2";
 
-impl<E: Engine> Track<E> {
+impl MixerTrack {
+    const SYM_NAME:    &'static str = ":name";
+    const SYM_GAIN:    &'static str = ":gain";
+    const SYM_SAMPLER: &'static str = "sampler";
+    const SYM_LV2:     &'static str = "lv2";
     pub fn from_edn <'a, 'e> (jack: &Arc<RwLock<JackClient>>, args: &[Edn<'e>]) -> Usually<Self> {
         let mut _gain = 0.0f64;
         let mut track = Self::new("")?;
         #[allow(unused_mut)]
-        let mut devices: Vec<JackDevice<E>> = vec![];
+        let mut devices: Vec<JackDevice> = vec![];
         edn!(edn in args {
             Edn::Map(map) => {
-                if let Some(Edn::Str(n)) = map.get(&Edn::Key(SYM_NAME)) {
+                if let Some(Edn::Str(n)) = map.get(&Edn::Key(Self::SYM_NAME)) {
                     track.name = n.to_string();
                 }
-                if let Some(Edn::Double(g)) = map.get(&Edn::Key(SYM_GAIN)) {
+                if let Some(Edn::Double(g)) = map.get(&Edn::Key(Self::SYM_GAIN)) {
                     _gain = f64::from(*g);
                 }
             },
             Edn::List(args) => match args.get(0) {
                 // Add a sampler device to the track
-                Some(Edn::Symbol(SYM_SAMPLER)) => {
+                Some(Edn::Symbol(Self::SYM_SAMPLER)) => {
                     devices.push(Sampler::from_edn(jack, &args[1..])?);
                     panic!(
                         "unsupported in track {}: {:?}; tek_mixer not compiled with feature \"sampler\"",
@@ -57,7 +58,7 @@ impl<E: Engine> Track<E> {
                     )
                 },
                 // Add a LV2 plugin to the track.
-                Some(Edn::Symbol(SYM_LV2)) => {
+                Some(Edn::Symbol(Self::SYM_LV2)) => {
                     devices.push(LV2Plugin::from_edn(jack, &args[1..])?);
                     panic!(
                         "unsupported in track {}: {:?}; tek_mixer not compiled with feature \"plugin\"",
@@ -80,7 +81,7 @@ impl<E: Engine> Track<E> {
 }
 
 impl LV2Plugin {
-    pub fn from_edn <'e, E: Engine> (jack: &Arc<RwLock<JackClient>>, args: &[Edn<'e>]) -> Usually<JackDevice<E>> {
+    pub fn from_edn <'e> (jack: &Arc<RwLock<JackClient>>, args: &[Edn<'e>]) -> Usually<JackDevice> {
         let mut name = String::new();
         let mut path = String::new();
         edn!(edn in args {
@@ -98,8 +99,8 @@ impl LV2Plugin {
     }
 }
 
-impl<E: Engine> Sampler<E> {
-    pub fn from_edn <'e> (jack: &Arc<RwLock<JackClient>>, args: &[Edn<'e>]) -> Usually<JackDevice<E>> {
+impl Sampler {
+    pub fn from_edn <'e> (jack: &Arc<RwLock<JackClient>>, args: &[Edn<'e>]) -> Usually<JackDevice> {
         let mut name = String::new();
         let mut dir  = String::new();
         let mut samples = BTreeMap::new();

crates/tek_api/src/api_midi.rs

@@ -1,28 +0,0 @@
-use crate::*;
-pub(crate) use tek_core::midly::MidiMessage;
-
-/// MIDI message structural
-pub type PhraseData = Vec<Vec<MidiMessage>>;
-
-/// A MIDI sequence.
-#[derive(Debug, Clone)] pub struct Phrase {
-    pub uuid:        uuid::Uuid,
-    /// Name of phrase
-    pub name:        String,
-    /// Temporal resolution in pulses per quarter note
-    pub ppq:         usize,
-    /// Length of phrase in pulses
-    pub length:      usize,
-    /// Notes in phrase
-    pub notes:       PhraseData,
-    /// Whether to loop the phrase or play it once
-    pub loop_on:     bool,
-    /// Start of loop
-    pub loop_start:  usize,
-    /// Length of loop
-    pub loop_length: usize,
-    /// All notes are displayed with minimum length
-    pub percussive:  bool,
-    /// Identifying color of phrase
-    pub color:       ItemColorTriplet,
-}

crates/tek_api/src/lib.rs

@@ -1,6 +1,242 @@
 pub(crate) use tek_core::*;
+pub(crate) use tek_core::jack::{TransportState, Port, MidiIn, MidiOut};
+pub(crate) use tek_core::midly::{MidiMessage, num::u7};
+pub(crate) use std::thread::JoinHandle;
+
 submod! {
     api_cmd
     api_edn
-    api_midi
+}
+
+/// A timer with starting point, current time, and quantization
+#[derive(Default, Debug)]
+pub struct Clock {
+    /// Playback state
+    pub playing: RwLock<Option<TransportState>>,
+    /// Global sample and usec at which playback started
+    pub started: RwLock<Option<(usize, usize)>>,
+    /// Current moment in time
+    pub current: Instant,
+    /// Note quantization factor
+    pub quant:   Quantize,
+    /// Launch quantization factor
+    pub sync:    LaunchSync,
+}
+
+impl Clock {
+    #[inline] pub fn timebase (&self) -> &Arc<Timebase> {
+        &self.current.timebase
+    }
+    #[inline] pub fn pulse (&self) -> f64 {
+        self.current.pulse.get()
+    }
+    #[inline] pub fn quant (&self) -> f64 {
+        self.quant.get()
+    }
+    #[inline] pub fn sync (&self) -> f64 {
+        self.sync.get()
+    }
+    #[inline] pub fn next_launch_pulse (&self) -> usize {
+        let sync  = self.sync.get()  as usize;
+        let pulse = self.current.pulse.get() as usize;
+        if pulse % sync == 0 { pulse } else { (pulse / sync + 1) * sync }
+    }
+}
+
+pub struct TransportToolbar {
+    pub jack:      Arc<RwLock<JackClient>>,
+    /// JACK transport handle.
+    pub transport: jack::Transport,
+    /// Current sample rate, tempo, and PPQ.
+    pub clock:     Arc<Clock>,
+    /// Enable metronome?
+    pub metronome: bool,
+}
+
+pub struct Arrangement {
+    /// JACK client handle (needs to not be dropped for standalone mode to work).
+    pub jack:    Arc<RwLock<JackClient>>,
+    /// Global timebase
+    pub clock:   Arc<Clock>,
+    /// Name of arranger
+    pub name:    Arc<RwLock<String>>,
+    /// Collection of phrases.
+    pub phrases: Arc<RwLock<Vec<Phrase>>>,
+    /// Collection of tracks.
+    pub tracks:  Vec<Sequencer>,
+    /// Collection of scenes.
+    pub scenes:  Vec<Scene>,
+}
+
+#[derive(Debug)]
+pub struct Sequencer {
+    /// Name of track
+    pub name:   Arc<RwLock<String>>,
+    /// Preferred width of track column
+    pub width:  usize,
+    /// Identifying color of track
+    pub color:  ItemColor,
+    /// MIDI player/recorder
+    pub player: PhrasePlayer,
+}
+
+/// Phrase player.
+#[derive(Debug)]
+pub struct PhrasePlayer {
+    /// Global timebase
+    pub clock:        Arc<Clock>,
+    /// Start time and phrase being played
+    pub phrase:       Option<(Instant, Option<Arc<RwLock<Phrase>>>)>,
+    /// Start time and next phrase
+    pub next_phrase:  Option<(Instant, Option<Arc<RwLock<Phrase>>>)>,
+    /// Play input through output.
+    pub monitoring:   bool,
+    /// Write input to sequence.
+    pub recording:    bool,
+    /// Overdub input to sequence.
+    pub overdub:      bool,
+    /// Send all notes off
+    pub reset:        bool, // TODO?: after Some(nframes)
+    /// Record from MIDI ports to current sequence.
+    pub midi_inputs:  Vec<Port<MidiIn>>,
+    /// Play from current sequence to MIDI ports
+    pub midi_outputs: Vec<Port<MidiOut>>,
+    /// MIDI output buffer
+    pub midi_note:    Vec<u8>,
+    /// MIDI output buffer
+    pub midi_chunk:   Vec<Vec<Vec<u8>>>,
+    /// Notes currently held at input
+    pub notes_in:     Arc<RwLock<[bool; 128]>>,
+    /// Notes currently held at output
+    pub notes_out:    Arc<RwLock<[bool; 128]>>,
+}
+
+#[derive(Default, Debug, Clone)]
+pub struct Scene {
+    /// Name of scene
+    pub name:  Arc<RwLock<String>>,
+    /// Clips in scene, one per track
+    pub clips: Vec<Option<Arc<RwLock<Phrase>>>>,
+    /// Identifying color of scene
+    pub color: ItemColor,
+}
+
+/// A MIDI sequence.
+#[derive(Debug, Clone, Default)]
+pub struct Phrase {
+    pub uuid:        uuid::Uuid,
+    /// Name of phrase
+    pub name:        String,
+    /// Temporal resolution in pulses per quarter note
+    pub ppq:         usize,
+    /// Length of phrase in pulses
+    pub length:      usize,
+    /// Notes in phrase
+    pub notes:       PhraseData,
+    /// Whether to loop the phrase or play it once
+    pub loop_on:     bool,
+    /// Start of loop
+    pub loop_start:  usize,
+    /// Length of loop
+    pub loop_length: usize,
+    /// All notes are displayed with minimum length
+    pub percussive:  bool,
+    /// Identifying color of phrase
+    pub color:       ItemColorTriplet,
+}
+
+/// MIDI message structural
+pub type PhraseData = Vec<Vec<MidiMessage>>;
+
+#[derive(Default, Debug, Clone)]
+pub struct Mixer {
+    /// JACK client handle (needs to not be dropped for standalone mode to work).
+    pub jack:            Arc<RwLock<JackClient>>,
+    pub name:            String,
+    pub tracks:          Vec<MixerTrack>,
+    pub selected_track:  usize,
+    pub selected_column: usize,
+}
+
+/// A mixer track.
+#[derive(Default, Debug, Clone)]
+pub struct MixerTrack {
+    pub name:    String,
+    /// Inputs and outputs of 1st and last device
+    pub ports:   JackPorts,
+    /// Device chain
+    pub devices: Vec<JackDevice>,
+    /// Device selector
+    pub device:  usize,
+}
+
+/// The sampler plugin plays sounds.
+#[derive(Default, Debug, Clone)]
+pub struct Sampler {
+    pub jack:        Arc<RwLock<JackClient>>,
+    pub name:        String,
+    pub cursor:      (usize, usize),
+    pub editing:     Option<Arc<RwLock<Sample>>>,
+    pub mapped:      BTreeMap<u7, Arc<RwLock<Sample>>>,
+    pub unmapped:    Vec<Arc<RwLock<Sample>>>,
+    pub voices:      Arc<RwLock<Vec<Voice>>>,
+    pub ports:       JackPorts,
+    pub buffer:      Vec<Vec<f32>>,
+    pub modal:       Arc<Mutex<Option<Box<dyn Exit + Send>>>>,
+    pub output_gain: f32
+}
+
+/// A sound sample.
+#[derive(Default, Debug)]
+pub struct Sample {
+    pub name:     String,
+    pub start:    usize,
+    pub end:      usize,
+    pub channels: Vec<Vec<f32>>,
+    pub rate:     Option<usize>,
+}
+
+/// A currently playing instance of a sample.
+#[derive(Default, Debug, Clone)]
+pub struct Voice {
+    pub sample:   Arc<RwLock<Sample>>,
+    pub after:    usize,
+    pub position: usize,
+    pub velocity: f32,
+}
+
+/// A plugin device.
+#[derive(Debug)]
+pub struct Plugin {
+    /// JACK client handle (needs to not be dropped for standalone mode to work).
+    pub jack:     Arc<RwLock<JackClient>>,
+    pub name:     String,
+    pub path:     Option<String>,
+    pub plugin:   Option<PluginKind>,
+    pub selected: usize,
+    pub mapping:  bool,
+    pub ports:    JackPorts,
+}
+
+/// Supported plugin formats.
+#[derive(Default, Debug)]
+pub enum PluginKind {
+    #[default] None,
+    LV2(LV2Plugin),
+    VST2 {
+        instance: ::vst::host::PluginInstance
+    },
+    VST3,
+}
+
+/// A LV2 plugin.
+#[derive(Debug)]
+pub struct LV2Plugin {
+    pub world:        livi::World,
+    pub instance:     livi::Instance,
+    pub plugin:       livi::LiviPlugin,
+    pub features:     Arc<livi::Features>,
+    pub port_list:    Vec<livi::Port>,
+    pub input_buffer: Vec<livi::event::LV2AtomSequence>,
+    pub ui_thread:    Option<JoinHandle<()>>,
 }

crates/tek_app/src/transport.rs

@@ -1,105 +0,0 @@
-use crate::*;
-/// A timer with starting point, current time, and quantization
-#[derive(Debug, Default)] pub struct TransportTime {
-    /// Playback state
-    pub playing: RwLock<Option<TransportState>>,
-    /// Global sample and usec at which playback started
-    pub started: RwLock<Option<(usize, usize)>>,
-    /// Current moment in time
-    pub current: Instant,
-    /// Note quantization factor
-    pub quant:   Quantize,
-    /// Launch quantization factor
-    pub sync:    LaunchSync,
-}
-impl TransportTime {
-    #[inline] pub fn timebase (&self) -> &Arc<Timebase> { &self.current.timebase }
-    #[inline] pub fn pulse (&self) -> f64 { self.current.pulse.get() }
-    #[inline] pub fn quant (&self) -> f64 { self.quant.get() }
-    #[inline] pub fn sync (&self)  -> f64 { self.sync.get() }
-    #[inline] pub fn next_launch_pulse (&self) -> usize {
-        let sync  = self.sync.get()  as usize;
-        let pulse = self.current.pulse.get() as usize;
-        if pulse % sync == 0 { pulse } else { (pulse / sync + 1) * sync }
-    }
-}
-/// Stores and displays time-related state.
-pub struct TransportToolbar<E: Engine> {
-    _engine: PhantomData<E>,
-    /// JACK client handle (needs to not be dropped for standalone mode to work).
-    pub jack:      Arc<RwLock<JackClient>>,
-    /// JACK transport handle.
-    pub transport: Transport,
-    /// Current sample rate, tempo, and PPQ.
-    pub clock:     Arc<TransportTime>,
-    /// Enable metronome?
-    pub metronome: bool,
-    /// Whether the toolbar is focused
-    pub focused:   bool,
-    /// Which part of the toolbar is focused
-    pub focus:     TransportToolbarFocus,
-}
-/// Which item of the transport toolbar is focused
-#[derive(Clone, Copy, PartialEq)]
-pub enum TransportToolbarFocus { Bpm, Sync, PlayPause, Clock, Quant, }
-impl<E: Engine> TransportToolbar<E> {
-    pub fn new (jack: &Arc<RwLock<JackClient>>, clock: Option<&Arc<TransportTime>>) -> Self {
-        Self {
-            _engine:   Default::default(),
-            focused:   false,
-            focus:     TransportToolbarFocus::PlayPause,
-            metronome: false,
-            transport: jack.read().unwrap().transport(),
-            jack:      jack.clone(),
-            clock: match clock {
-                Some(clock) => clock.clone(),
-                None => {
-                    let timebase = Arc::new(Timebase::default());
-                    Arc::new(TransportTime {
-                        playing: Some(TransportState::Stopped).into(),
-                        quant:   24.into(),
-                        sync:    (timebase.ppq.get() * 4.).into(),
-                        current: Instant::default(),
-                        started: None.into(),
-                    })
-                }
-            }
-        }
-    }
-    pub fn toggle_play (&mut self) -> Usually<()> {
-        let playing = self.clock.playing.read().unwrap().expect("1st sample has not been processed yet");
-        let playing = match playing {
-            TransportState::Stopped => {
-                self.transport.start()?;
-                Some(TransportState::Starting)
-            },
-            _ => {
-                self.transport.stop()?;
-                self.transport.locate(0)?;
-                Some(TransportState::Stopped)
-            },
-        };
-        *self.clock.playing.write().unwrap() = playing;
-        Ok(())
-    }
-}
-impl TransportToolbarFocus {
-    pub fn next (&mut self) {
-        *self = match self {
-            Self::PlayPause => Self::Bpm,
-            Self::Bpm       => Self::Quant,
-            Self::Quant     => Self::Sync,
-            Self::Sync      => Self::Clock,
-            Self::Clock     => Self::PlayPause,
-        }
-    }
-    pub fn prev (&mut self) {
-        *self = match self {
-            Self::PlayPause => Self::Clock,
-            Self::Bpm       => Self::PlayPause,
-            Self::Quant     => Self::Bpm,
-            Self::Sync      => Self::Quant,
-            Self::Clock     => Self::Sync,
-        }
-    }
-}

crates/tek_cli/Cargo.toml

@@ -1,19 +1,12 @@
 [package]
-name = "tek_app"
+name = "tek_cli"
 edition = "2021"
 version = "0.1.0"
 
 [dependencies]
 tek_core = { path = "../tek_core" }
 tek_api = { path = "../tek_api" }
-
-livi = "0.7.4"
-suil-rs = { path = "../suil" }
-symphonia = { version = "0.5.4", features = [ "all" ] }
-vst = "0.4.0"
-#vst3 = "0.1.0"
-wavers = "1.4.3"
-winit = { version = "0.30.4", features = [ "x11" ] }
+tek_tui = { path = "../tek_tui" }
 
 [lib]
 path = "src/lib.rs"

crates/tek_cli/README.md

@@ -0,0 +1 @@
+cli entry points

crates/tek_cli/src/cli_transport.rs

@@ -2,7 +2,7 @@ include!("lib.rs");
 /// Application entrypoint.
 pub fn main () -> Usually<()> {
     Tui::run(JackClient::new("tek_transport")?.activate_with(|jack|{
-        let mut transport = TransportToolbar::new(jack, None);
+        let mut transport = TransportToolbarView::new(jack, None);
         transport.focused = true;
         Ok(transport)
     })?)?;

crates/tek_core/Cargo.toml

@@ -20,5 +20,4 @@ toml = "0.8.12"
 #no_deadlocks = "1.3.2"
 
 [dev-dependencies]
-tek_mixer = { version = "0.1.0", path = "../tek_mixer" }
-tek_sequencer = { version = "0.1.0", path = "../tek_sequencer" }
+#tek_app = { version = "0.1.0", path = "../tek_app" }

crates/tek_snd/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "tek_snd"
+edition = "2021"
+version = "0.1.0"
+
+[dependencies]
+tek_core = { path = "../tek_core" }
+tek_api = { path = "../tek_api" }

crates/tek_snd/README.md

@@ -0,0 +1 @@
+jack-based audio engine

crates/tek_snd/src/lib.rs

@@ -0,0 +1,10 @@
+pub(crate) use tek_core::*;
+submod! {
+    snd_arranger
+    snd_mixer
+    snd_plugin
+    snd_sampler
+    snd_sequencer
+    snd_transport
+}
+

crates/tek_snd/src/snd_arranger.rs

@@ -1,5 +1,6 @@
 use crate::*;
-impl<E: Engine> Audio for Arranger<E> {
+
+impl Audio for Arranger {
     fn process (&mut self, client: &Client, scope: &ProcessScope) -> Control {
         if let Some(ref transport) = self.transport {
             transport.write().unwrap().process(client, scope);

crates/tek_snd/src/snd_mixer.rs

@@ -1,5 +1,6 @@
 use crate::*;
-impl<E: Engine> Audio for Mixer<E> {
+
+impl Audio for Mixer {
     fn process (&mut self, _: &Client, _: &ProcessScope) -> Control {
         Control::Continue
     }

crates/tek_snd/src/snd_plugin.rs

@@ -1,5 +1,6 @@
 use crate::*;
-impl<E: Engine> Audio for Plugin<E> {
+
+impl Audio for Plugin {
     fn process (&mut self, _: &Client, scope: &ProcessScope) -> Control {
         match self.plugin.as_mut() {
             Some(PluginKind::LV2(LV2Plugin {

crates/tek_snd/src/snd_sampler.rs

@@ -1,5 +1,6 @@
 use crate::*;
-impl<E: Engine> Audio for Sampler<E> {
+
+impl Audio for Sampler {
     fn process (&mut self, _: &Client, scope: &ProcessScope) -> Control {
         self.process_midi_in(scope);
         self.clear_output_buffer();

crates/tek_snd/src/snd_sequencer.rs

@@ -1,6 +1,7 @@
 use crate::*;
+
 /// JACK process callback for sequencer app
-impl<E: Engine> Audio for Sequencer<E> {
+impl Audio for Sequencer {
     fn process (&mut self, client: &Client, scope: &ProcessScope) -> Control {
         if let Some(ref transport) = self.transport {
             transport.write().unwrap().process(client, scope);
@@ -9,6 +10,7 @@ impl<E: Engine> Audio for Sequencer<E> {
         Control::Continue
     }
 }
+
 /// JACK process callback for a sequencer's phrase player/recorder.
 impl Audio for PhrasePlayer {
     fn process (&mut self, _: &Client, scope: &ProcessScope) -> Control {
@@ -34,6 +36,7 @@ impl Audio for PhrasePlayer {
         Control::Continue
     }
 }
+
 /// Methods used primarily by the process callback
 impl PhrasePlayer {
     fn is_rolling (&self) -> bool {
@@ -199,6 +202,7 @@ impl PhrasePlayer {
         }
     }
 }
+
 /// Add "all notes off" to the start of a buffer.
 pub fn all_notes_off (output: &mut PhraseChunk) {
     let mut buf = vec![];
@@ -207,6 +211,7 @@ pub fn all_notes_off (output: &mut PhraseChunk) {
     evt.write(&mut buf).unwrap();
     output[0].push(buf);
 }
+
 /// Return boxed iterator of MIDI events
 pub fn parse_midi_input (input: MidiIter) -> Box<dyn Iterator<Item=(usize, LiveEvent, &[u8])> + '_> {
     Box::new(input.map(|RawMidi { time, bytes }|(
@@ -215,6 +220,7 @@ pub fn parse_midi_input (input: MidiIter) -> Box<dyn Iterator<Item=(usize, LiveE
         bytes
     )))
 }
+
 /// Update notes_in array
 pub fn update_keys (keys: &mut[bool;128], message: &MidiMessage) {
     match message {

crates/tek_snd/src/snd_transport.rs

@@ -1,5 +1,5 @@
 use crate::*;
-impl<E: Engine> Audio for TransportToolbar<E> {
+impl Audio for TransportToolbar {
     fn process (&mut self, _: &Client, scope: &ProcessScope) -> Control {
         let times       = scope.cycle_times().unwrap();
         let CycleTimes { current_frames, current_usecs, next_usecs: _, period_usecs: _ } = times;

crates/tek_tui/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "tek_tui"
+edition = "2021"
+version = "0.1.0"
+
+[dependencies]
+tek_core = { path = "../tek_core" }
+tek_api = { path = "../tek_api" }
+
+livi = "0.7.4"
+suil-rs = { path = "../suil" }
+symphonia = { version = "0.5.4", features = [ "all" ] }
+vst = "0.4.0"
+#vst3 = "0.1.0"
+wavers = "1.4.3"
+winit = { version = "0.30.4", features = [ "x11" ] }

crates/tek_tui/src/arranger.rs

@@ -1,7 +1,7 @@
 use crate::*;
 
 /// Root level object for standalone `tek_arranger`
-pub struct Arranger<E: Engine> {
+pub struct ArrangerView<E: Engine> {
     /// JACK client handle (needs to not be dropped for standalone mode to work).
     pub jack:              Arc<RwLock<JackClient>>,
     /// Which view is focused

crates/tek_tui/src/transport.rs

@@ -0,0 +1,81 @@
+use crate::*;
+/// Stores and displays time-related state.
+#[derive(Debug)]
+pub struct TransportView<E: Engine> {
+    _engine: PhantomData<E>,
+    state:   TransportToolbar,
+    focused: bool,
+    focus:   TransportFocus,
+}
+/// Which item of the transport toolbar is focused
+#[derive(Clone, Copy, PartialEq)]
+pub enum TransportFocus {
+    Bpm,
+    Sync,
+    PlayPause,
+    Clock,
+    Quant,
+}
+impl<E: Engine> TransportView<E> {
+    pub fn new (jack: &Arc<RwLock<JackClient>>, clock: Option<&Arc<TransportTime>>) -> Self {
+        Self {
+            _engine: Default::default(),
+            focused: false,
+            focus:   TransportFocus::PlayPause,
+            state:   TransportToolbar {
+                metronome: false,
+                transport: jack.read().unwrap().transport(),
+                jack:      jack.clone(),
+                clock: match clock {
+                    Some(clock) => clock.clone(),
+                    None => {
+                        let timebase = Arc::new(Timebase::default());
+                        Arc::new(TransportTime {
+                            playing: Some(TransportState::Stopped).into(),
+                            quant:   24.into(),
+                            sync:    (timebase.ppq.get() * 4.).into(),
+                            current: Instant::default(),
+                            started: None.into(),
+                        })
+                    }
+                },
+            }
+        }
+    }
+    pub fn toggle_play (&mut self) -> Usually<()> {
+        let playing = self.clock.playing.read().unwrap().expect("1st sample has not been processed yet");
+        let playing = match playing {
+            TransportState::Stopped => {
+                self.transport.start()?;
+                Some(TransportState::Starting)
+            },
+            _ => {
+                self.transport.stop()?;
+                self.transport.locate(0)?;
+                Some(TransportState::Stopped)
+            },
+        };
+        *self.clock.playing.write().unwrap() = playing;
+        Ok(())
+    }
+}
+impl TransportFocus {
+    pub fn next (&mut self) {
+        *self = match self {
+            Self::PlayPause => Self::Bpm,
+            Self::Bpm       => Self::Quant,
+            Self::Quant     => Self::Sync,
+            Self::Sync      => Self::Clock,
+            Self::Clock     => Self::PlayPause,
+        }
+    }
+    pub fn prev (&mut self) {
+        *self = match self {
+            Self::PlayPause => Self::Clock,
+            Self::Bpm       => Self::PlayPause,
+            Self::Quant     => Self::Bpm,
+            Self::Sync      => Self::Quant,
+            Self::Clock     => Self::Sync,
+        }
+    }
+}

crates/tek_tui/src/transport_cmd.rs

@@ -18,10 +18,10 @@ pub enum TransportCommand {
     SetQuant(f64),
     SetSync(f64),
 }
-impl<E: Engine> Command<TransportToolbar<E>> for TransportCommand {
-    fn translate (self, state: &TransportToolbar<E>) -> Self {
+impl<E: Engine> Command<TransportView<E>> for TransportCommand {
+    fn translate (self, state: &TransportView<E>) -> Self {
         use TransportCommand::*;
-        use TransportToolbarFocus::*;
+        use TransportViewFocus::*;
         match self {
             Increment => match state.focus {
                 Bpm =>
@@ -75,7 +75,7 @@ impl<E: Engine> Command<TransportToolbar<E>> for TransportCommand {
         };
         return self
     }
-    fn execute (self, state: &mut TransportToolbar<E>) -> Perhaps<Self> {
+    fn execute (self, state: &mut TransportView<E>) -> Perhaps<Self> {
         use TransportCommand::*;
         match self.translate(&state) {
             FocusNext          =>