wip: refactor into fewer crates, pt.2

Cargo.lock

@@ -1518,11 +1518,8 @@ dependencies = [
  "proptest",
  "proptest-derive",
  "rand",
- "tek_jack",
- "tek_midi",
- "tek_plugin",
- "tek_sampler",
- "tek_time",
+ "tek_device",
+ "tek_engine",
  "tengri",
  "toml",
 ]
@@ -1536,53 +1533,26 @@ dependencies = [
 ]
 
 [[package]]
-name = "tek_jack"
-version = "0.2.1"
-dependencies = [
- "jack",
-]
-
-[[package]]
-name = "tek_midi"
-version = "0.2.1"
-dependencies = [
- "midly",
- "tek_jack",
- "tek_time",
- "tengri",
- "uuid",
-]
-
-[[package]]
-name = "tek_plugin"
+name = "tek_device"
 version = "0.2.1"
 dependencies = [
  "livi",
- "tek_jack",
- "tek_midi",
- "tek_time",
- "tengri",
-]
-
-[[package]]
-name = "tek_sampler"
-version = "0.2.1"
-dependencies = [
  "symphonia",
- "tek_jack",
- "tek_midi",
- "tek_time",
+ "tek_engine",
  "tengri",
+ "uuid",
  "wavers",
 ]
 
 [[package]]
-name = "tek_time"
+name = "tek_engine"
 version = "0.2.1"
 dependencies = [
  "atomic_float",
- "tek_jack",
+ "jack",
+ "midly",
  "tengri",
+ "uuid",
 ]
 
 [[package]]

Cargo.toml

@@ -5,13 +5,10 @@ version = "0.2.1"
 [workspace]
 resolver = "2"
 members = [
+  "./crates/engine",
+  "./crates/device",
   "./crates/app",
   "./crates/cli",
-  "./crates/jack",
-  "./crates/midi",
-  "./crates/plugin",
-  "./crates/sampler",
-  "./crates/time"
 ]
 exclude = [
   "./deps/tengri"
@@ -37,13 +34,10 @@ path = "./deps/rust-jack"
 #default-features = false
 
 [workspace.dependencies]
+tek_device  = { path = "./crates/device" }
+tek_engine  = { path = "./crates/engine" }
 tek         = { path = "./crates/app"    }
 tek_cli     = { path = "./crates/cli"    }
-tek_jack    = { path = "./crates/jack"    }
-tek_midi    = { path = "./crates/midi"    }
-tek_plugin  = { path = "./crates/plugin", default-features = false }
-tek_sampler = { path = "./crates/sampler" }
-tek_time    = { path = "./crates/time"    }
 
 atomic_float = { version = "1.0.0" }
 backtrace    = { version = "0.3.72" }

crates/app/Cargo.toml

@@ -6,11 +6,8 @@ version = { workspace = true }
 [dependencies]
 tengri = { workspace = true }
 
-tek_jack    = { workspace = true }
-tek_time    = { workspace = true }
-tek_midi    = { workspace = true }
-tek_sampler = { workspace = true }
-tek_plugin  = { workspace = true, optional = true }
+tek_engine = { workspace = true }
+tek_device = { workspace = true }
 
 backtrace = { workspace = true }
 clap      = { workspace = true, optional = true }
@@ -25,4 +22,4 @@ proptest-derive = { workspace = true }
 [features]
 default = ["cli"]
 cli     = ["clap"]
-host    = ["tek_plugin"]
+host    = ["tek_device/lv2"]

crates/app/src/api.rs

@@ -23,7 +23,7 @@ expose!([self: Tek]
         (":track" self.selected.track()))
     ([MaybeClip]
         (":clip" match self.selected {
-            Selection::Clip(t, s) => self.scenes[s].clips[t].clone(),
+            Selection::TrackClip { track, scene } => self.scenes[scene].clips[track].clone(),
             _ => None
         }))
     ([Selection]
@@ -70,7 +70,7 @@ impose!([app: Tek]
             (0, 0) => Self::Select(Selection::Mix),
             (t, 0) => Self::Select(Selection::Track(t)),
             (0, s) => Self::Select(Selection::Scene(s)),
-            (t, s) => Self::Select(Selection::Clip(t, s)) })))
+            (t, s) => Self::Select(Selection::TrackClip { track: t, scene: s }) })))
 
     (ClipCommand:
         ("edit"    [a: MaybeClip] Some(Self::Edit(a.unwrap())))

crates/app/src/editor.rs

@@ -0,0 +1,3 @@
+mod editor_api;
+mod editor_model;
+mod editor_view;

crates/app/src/editor/editor_api.rs

@@ -0,0 +1,97 @@
+use crate::*;
+
+provide!(bool: |self: MidiEditor| {
+    ":true" => true,
+    ":false" => false,
+    ":time-lock" => self.time_lock().get(),
+    ":time-lock-toggle" => !self.time_lock().get(),
+});
+
+provide!(usize: |self: MidiEditor| {
+    ":note-length" => self.note_len(),
+
+    ":note-pos"      => self.note_pos(),
+    ":note-pos-next" => self.note_pos() + 1,
+    ":note-pos-prev" => self.note_pos().saturating_sub(1),
+    ":note-pos-next-octave" => self.note_pos() + 12,
+    ":note-pos-prev-octave" => self.note_pos().saturating_sub(12),
+
+    ":note-len"      => self.note_len(),
+    ":note-len-next" => self.note_len() + 1,
+    ":note-len-prev" => self.note_len().saturating_sub(1),
+
+    ":note-range"      => self.note_axis().get(),
+    ":note-range-prev" => self.note_axis().get() + 1,
+    ":note-range-next" => self.note_axis().get().saturating_sub(1),
+
+    ":time-pos"      => self.time_pos(),
+    ":time-pos-next" => self.time_pos() + self.time_zoom().get(),
+    ":time-pos-prev" => self.time_pos().saturating_sub(self.time_zoom().get()),
+
+    ":time-zoom"      => self.time_zoom().get(),
+    ":time-zoom-next" => self.time_zoom().get() + 1,
+    ":time-zoom-prev" => self.time_zoom().get().saturating_sub(1).max(1),
+});
+
+atom_command!(MidiEditCommand: |state: MidiEditor| {
+    ("note/append" []         Some(Self::AppendNote))
+    ("note/put"    []         Some(Self::PutNote))
+    ("note/del"    []         Some(Self::DelNote))
+    ("note/pos"    [a: usize] Some(Self::SetNoteCursor(a.expect("no note cursor"))))
+    ("note/len"    [a: usize] Some(Self::SetNoteLength(a.expect("no note length"))))
+    ("time/pos"    [a: usize] Some(Self::SetTimeCursor(a.expect("no time cursor"))))
+    ("time/zoom"   [a: usize] Some(Self::SetTimeZoom(a.expect("no time zoom"))))
+    ("time/lock"   [a: bool]  Some(Self::SetTimeLock(a.expect("no time lock"))))
+    ("time/lock"   []         Some(Self::SetTimeLock(!state.time_lock().get())))
+});
+
+#[derive(Clone, Debug)] pub enum MidiEditCommand {
+    // TODO: 1-9 seek markers that by default start every 8th of the clip
+    AppendNote,
+    PutNote,
+    DelNote,
+    SetNoteCursor(usize),
+    SetNoteLength(usize),
+    SetNoteScroll(usize),
+    SetTimeCursor(usize),
+    SetTimeScroll(usize),
+    SetTimeZoom(usize),
+    SetTimeLock(bool),
+    Show(Option<Arc<RwLock<MidiClip>>>),
+}
+
+handle!(TuiIn: |self: MidiEditor, input|Ok(if let Some(command) = self.keys.command(self, input) {
+    command.execute(self)?;
+    Some(true)
+} else {
+    None
+}));
+
+impl Command<MidiEditor> for MidiEditCommand {
+    fn execute (self, state: &mut MidiEditor) -> Perhaps<Self> {
+        use MidiEditCommand::*;
+        match self {
+            Show(clip) => { state.set_clip(clip.as_ref()); },
+            DelNote    => {},
+            PutNote    => { state.put_note(false); },
+            AppendNote => { state.put_note(true); },
+            SetTimeZoom(x) => { state.time_zoom().set(x); state.redraw(); },
+            SetTimeLock(x) => { state.time_lock().set(x); },
+            SetTimeScroll(x) => { state.time_start().set(x); },
+            SetNoteScroll(x) => { state.note_lo().set(x.min(127)); },
+            SetNoteLength(x) => {
+                let note_len = state.note_len();
+                let time_zoom = state.time_zoom().get();
+                state.set_note_len(x);
+                //if note_len / time_zoom != x / time_zoom {
+                    state.redraw();
+                //}
+            },
+            SetTimeCursor(x) => { state.set_time_pos(x); },
+            SetNoteCursor(note) => { state.set_note_pos(note.min(127)); },
+            //_ => todo!("{:?}", self)
+        }
+        Ok(None)
+    }
+}
+

crates/app/src/editor/editor_model.rs

@@ -51,39 +51,6 @@ from!(|clip: Option<Arc<RwLock<MidiClip>>>|MidiEditor = {
     model
 });
 
-provide!(bool: |self: MidiEditor| {
-    ":true" => true,
-    ":false" => false,
-    ":time-lock" => self.time_lock().get(),
-    ":time-lock-toggle" => !self.time_lock().get(),
-});
-
-provide!(usize: |self: MidiEditor| {
-    ":note-length" => self.note_len(),
-
-    ":note-pos"      => self.note_pos(),
-    ":note-pos-next" => self.note_pos() + 1,
-    ":note-pos-prev" => self.note_pos().saturating_sub(1),
-    ":note-pos-next-octave" => self.note_pos() + 12,
-    ":note-pos-prev-octave" => self.note_pos().saturating_sub(12),
-
-    ":note-len"      => self.note_len(),
-    ":note-len-next" => self.note_len() + 1,
-    ":note-len-prev" => self.note_len().saturating_sub(1),
-
-    ":note-range"      => self.note_axis().get(),
-    ":note-range-prev" => self.note_axis().get() + 1,
-    ":note-range-next" => self.note_axis().get().saturating_sub(1),
-
-    ":time-pos"      => self.time_pos(),
-    ":time-pos-next" => self.time_pos() + self.time_zoom().get(),
-    ":time-pos-prev" => self.time_pos().saturating_sub(self.time_zoom().get()),
-
-    ":time-zoom"      => self.time_zoom().get(),
-    ":time-zoom-next" => self.time_zoom().get() + 1,
-    ":time-zoom-prev" => self.time_zoom().get().saturating_sub(1).max(1),
-});
-
 impl MidiEditor {
 
     /// Put note at current position
@@ -181,64 +148,3 @@ impl MidiViewer for MidiEditor {
     fn set_clip (&mut self, p: Option<&Arc<RwLock<MidiClip>>>) { self.mode.set_clip(p) }
 }
 
-atom_command!(MidiEditCommand: |state: MidiEditor| {
-    ("note/append" []         Some(Self::AppendNote))
-    ("note/put"    []         Some(Self::PutNote))
-    ("note/del"    []         Some(Self::DelNote))
-    ("note/pos"    [a: usize] Some(Self::SetNoteCursor(a.expect("no note cursor"))))
-    ("note/len"    [a: usize] Some(Self::SetNoteLength(a.expect("no note length"))))
-    ("time/pos"    [a: usize] Some(Self::SetTimeCursor(a.expect("no time cursor"))))
-    ("time/zoom"   [a: usize] Some(Self::SetTimeZoom(a.expect("no time zoom"))))
-    ("time/lock"   [a: bool]  Some(Self::SetTimeLock(a.expect("no time lock"))))
-    ("time/lock"   []         Some(Self::SetTimeLock(!state.time_lock().get())))
-});
-
-#[derive(Clone, Debug)] pub enum MidiEditCommand {
-    // TODO: 1-9 seek markers that by default start every 8th of the clip
-    AppendNote,
-    PutNote,
-    DelNote,
-    SetNoteCursor(usize),
-    SetNoteLength(usize),
-    SetNoteScroll(usize),
-    SetTimeCursor(usize),
-    SetTimeScroll(usize),
-    SetTimeZoom(usize),
-    SetTimeLock(bool),
-    Show(Option<Arc<RwLock<MidiClip>>>),
-}
-
-handle!(TuiIn: |self: MidiEditor, input|Ok(if let Some(command) = self.keys.command(self, input) {
-    command.execute(self)?;
-    Some(true)
-} else {
-    None
-}));
-
-impl Command<MidiEditor> for MidiEditCommand {
-    fn execute (self, state: &mut MidiEditor) -> Perhaps<Self> {
-        use MidiEditCommand::*;
-        match self {
-            Show(clip) => { state.set_clip(clip.as_ref()); },
-            DelNote    => {},
-            PutNote    => { state.put_note(false); },
-            AppendNote => { state.put_note(true); },
-            SetTimeZoom(x) => { state.time_zoom().set(x); state.redraw(); },
-            SetTimeLock(x) => { state.time_lock().set(x); },
-            SetTimeScroll(x) => { state.time_start().set(x); },
-            SetNoteScroll(x) => { state.note_lo().set(x.min(127)); },
-            SetNoteLength(x) => {
-                let note_len = state.note_len();
-                let time_zoom = state.time_zoom().get();
-                state.set_note_len(x);
-                //if note_len / time_zoom != x / time_zoom {
-                    state.redraw();
-                //}
-            },
-            SetTimeCursor(x) => { state.set_time_pos(x); },
-            SetNoteCursor(note) => { state.set_note_pos(note.min(127)); },
-            //_ => todo!("{:?}", self)
-        }
-        Ok(None)
-    }
-}

crates/app/src/editor/editor_view.rs

@@ -325,3 +325,39 @@ fn to_key (note: usize) -> &'static str {
         _  => unreachable!(),
     }
 }
+
+pub struct OctaveVertical {
+    on:     [bool; 12],
+    colors: [Color; 3]
+}
+
+impl Default for OctaveVertical {
+    fn default () -> Self {
+        Self {
+            on:     [false; 12],
+            colors: [Rgb(255,255,255), Rgb(0,0,0), Rgb(255,0,0)]
+        }
+    }
+}
+
+impl OctaveVertical {
+    fn color (&self, pitch: usize) -> Color {
+        let pitch = pitch % 12;
+        self.colors[if self.on[pitch] { 2 } else {
+            match pitch { 0 | 2 | 4 | 5 | 6 | 8 | 10 => 0, _ => 1 }
+        }]
+    }
+}
+
+impl Content<TuiOut> for OctaveVertical {
+    fn content (&self) -> impl Render<TuiOut> {
+        row!(
+            Tui::fg_bg(self.color(0),  self.color(1),  "▙"),
+            Tui::fg_bg(self.color(2),  self.color(3),  "▙"),
+            Tui::fg_bg(self.color(4),  self.color(5),  "▌"),
+            Tui::fg_bg(self.color(6),  self.color(7),  "▟"),
+            Tui::fg_bg(self.color(8),  self.color(9),  "▟"),
+            Tui::fg_bg(self.color(10), self.color(11), "▟"),
+        )
+    }
+}

crates/app/src/lib.rs

@@ -41,6 +41,9 @@ mod audio;  pub use self::audio::*;
 mod model;  pub use self::model::*;
 mod view;   pub use self::view::*;
 
+mod pool;
+mod editor;
+
 #[cfg(test)] #[test] fn test_model () {
     let mut tek = Tek::default();
     let _ = tek.clip();

crates/app/src/model.rs

@@ -121,10 +121,11 @@ impl Tek {
 
     /// Add and focus a track
     pub(crate) fn track_add_focus (&mut self) -> Usually<usize> {
+        use Selection::*;
         let index = self.track_add(None, None, &[], &[])?.0;
         self.selected = match self.selected {
-            Selection::Track(t)   => Selection::Track(index),
-            Selection::Clip(t, s) => Selection::Clip(index, s),
+            Track(_) => Track(index),
+            TrackClip { track, scene } => TrackClip { track: index, scene },
             _ => self.selected
         };
         Ok(index)
@@ -177,10 +178,11 @@ impl Tek {
 
     /// Add and focus an empty scene
     pub fn scene_add_focus (&mut self) -> Usually<usize> {
+        use Selection::*;
         let index = self.scene_add(None, None)?.0;
         self.selected = match self.selected {
-            Selection::Scene(s)   => Selection::Scene(index),
-            Selection::Clip(t, s) => Selection::Clip(t, index),
+            Scene(_) => Scene(index),
+            TrackClip { track, scene } => TrackClip { track, scene: index },
             _ => self.selected
         };
         Ok(index)
@@ -215,15 +217,15 @@ impl Tek {
     // Create new clip in pool when entering empty cell
     pub fn clip_auto_create (&mut self) {
         if let Some(ref pool) = self.pool
-            && let Selection::Clip(t, s) = self.selected
-            && let Some(scene) = self.scenes.get_mut(s)
-            && let Some(slot) = scene.clips.get_mut(t)
+            && let Selection::TrackClip { track, scene } = self.selected
+            && let Some(scene) = self.scenes.get_mut(scene)
+            && let Some(slot) = scene.clips.get_mut(track)
             && slot.is_none()
         {
             let (index, mut clip) = pool.add_new_clip();
             // autocolor: new clip colors from scene and track color
             clip.write().unwrap().color = ItemColor::random_near(
-                self.tracks[t].color.base.mix(
+                self.tracks[track].color.base.mix(
                     scene.color.base,
                     0.5
                 ),
@@ -239,9 +241,9 @@ impl Tek {
     // Remove clip from arrangement when exiting empty clip editor
     pub fn clip_auto_remove (&mut self) {
         if let Some(ref mut pool) = self.pool
-            && let Selection::Clip(t, s) = self.selected
-            && let Some(scene) = self.scenes.get_mut(s)
-            && let Some(slot) = scene.clips.get_mut(t)
+            && let Selection::TrackClip { track, scene } = self.selected
+            && let Some(scene) = self.scenes.get_mut(scene)
+            && let Some(slot) = scene.clips.get_mut(track)
             && let Some(clip) = slot.as_mut()
         {
             let mut swapped = None;
@@ -304,8 +306,10 @@ impl Tek {
         // autoedit: load focused clip in editor.
         if let Some(ref mut editor) = self.editor {
             editor.set_clip(match self.selected {
-                Selection::Clip(t, s) if let Some(Some(Some(clip))) = self
-                    .scenes.get(s).map(|s|s.clips.get(t)) => Some(clip),
+                Selection::TrackClip { track, scene }
+                if let Some(Some(Some(clip))) = self
+                    .scenes.get(scene)
+                    .map(|s|s.clips.get(track)) => Some(clip),
                 _ => None
             });
         }
@@ -320,14 +324,15 @@ impl Tek {
 
     /// Launch a clip or scene
     pub(crate) fn launch (&mut self) {
+        use Selection::*;
         match self.selected {
-            Selection::Track(t) => {
+            Track(t) => {
                 self.tracks[t].player.enqueue_next(None)
             },
-            Selection::Clip(t, s) => {
-                self.tracks[t].player.enqueue_next(self.scenes[s].clips[t].as_ref())
+            TrackClip { track, scene } => {
+                self.tracks[track].player.enqueue_next(self.scenes[scene].clips[track].as_ref())
             },
-            Selection::Scene(s) => {
+            Scene(s) => {
                 for t in 0..self.tracks.len() {
                     self.tracks[t].player.enqueue_next(self.scenes[s].clips[t].as_ref())
                 }
@@ -348,25 +353,26 @@ impl Tek {
 
     /// Set the color of the selected entity
     pub fn set_color (&mut self, palette: Option<ItemTheme>) -> Option<ItemTheme> {
+        use Selection::*;
         let palette = palette.unwrap_or_else(||ItemTheme::random());
         Some(match self.selected {
-            Selection::Mix => {
+            Mix => {
                 let old = self.color;
                 self.color = palette;
                 old
             },
-            Selection::Track(t) => {
-                let old = self.tracks[t].color;
-                self.tracks[t].color = palette;
-                old
-            }
-            Selection::Scene(s) => {
+            Scene(s) => {
                 let old = self.scenes[s].color;
                 self.scenes[s].color = palette;
                 old
             }
-            Selection::Clip(t, s) => {
-                if let Some(ref clip) = self.scenes[s].clips[t] {
+            Track(t) => {
+                let old = self.tracks[t].color;
+                self.tracks[t].color = palette;
+                old
+            }
+            TrackClip { track, scene } => {
+                if let Some(ref clip) = self.scenes[scene].clips[track] {
                     let mut clip = clip.write().unwrap();
                     let old = clip.color;
                     clip.color = palette;
@@ -374,7 +380,8 @@ impl Tek {
                 } else {
                     return None
                 }
-            }
+            },
+            _ => todo!()
         })
     }
 
@@ -426,12 +433,22 @@ pub enum Modal {
 pub enum Selection {
     /// The whole mix is selected
     #[default] Mix,
-    /// A track is selected.
-    Track(usize),
+    /// A MIDI input is selected.
+    Input(usize),
+    /// A MIDI output is selected.
+    Output(usize),
     /// A scene is selected.
     Scene(usize),
+    /// A track is selected.
+    Track(usize),
     /// A clip (track × scene) is selected.
-    Clip(usize, usize),
+    TrackClip   { track: usize, scene: usize  },
+    /// A track's MIDI input connection is selected.
+    TrackInput  { track: usize, port: usize   },
+    /// A track's MIDI output connection is selected.
+    TrackOutput { track: usize, port: usize   },
+    /// A track device slot is selected.
+    TrackDevice { track: usize, device: usize },
 }
 
 /// Focus identification methods
@@ -446,70 +463,101 @@ impl Selection {
         matches!(self, Self::Scene(_))
     }
     pub fn is_clip (&self) -> bool {
-        matches!(self, Self::Clip(_, _))
+        matches!(self, Self::TrackClip {..})
     }
     pub fn track (&self) -> Option<usize> {
         use Selection::*;
-        match self { Clip(t, _) => Some(*t), Track(t) => Some(*t), _ => None }
+        match self {
+            Track(track)
+            | TrackClip   { track, .. }
+            | TrackInput  { track, .. }
+            | TrackOutput { track, .. }
+            | TrackDevice { track, .. } => Some(*track),
+            _ => None
+        }
     }
     pub fn track_next (&self, len: usize) -> Self {
+        use Selection::*;
         match self {
-            Selection::Mix => Selection::Track(0),
-            Selection::Track(t) if t + 1 < len => Selection::Track(t + 1),
-            Selection::Track(t) => Selection::Mix,
-            Selection::Scene(s) => Selection::Clip(0, *s),
-            Selection::Clip(t, s) if t + 1 < len => Selection::Clip(t + 1, *s),
-            Selection::Clip(t, s) => Selection::Scene(*s),
+            Mix => Track(0),
+            Scene(s) => TrackClip { track: 0, scene: *s },
+            Track(t) => if t + 1 < len {
+                Track(t + 1)
+            } else {
+                Mix
+            },
+            TrackClip {track, scene} => if track + 1 < len {
+                TrackClip { track: track + 1, scene: *scene }
+            } else {
+                Scene(*scene)
+            },
+            _ => todo!()
         }
     }
     pub fn track_prev (&self) -> Self {
+        use Selection::*;
         match self {
-            Selection::Mix        => Selection::Mix,
-            Selection::Scene(s)   => Selection::Scene(*s),
-            Selection::Track(0)   => Selection::Mix,
-            Selection::Track(t)   => Selection::Track(t - 1),
-            Selection::Clip(0, s) => Selection::Scene(*s),
-            Selection::Clip(t, s) => Selection::Clip(t - 1, *s),
+            Mix => Mix,
+            Scene(s) => Scene(*s),
+            Track(0) => Mix,
+            Track(t) => Track(t - 1),
+            TrackClip { track: 0, scene } => Scene(*scene),
+            TrackClip { track: t, scene } => TrackClip { track: t - 1, scene: *scene },
+            _ => todo!()
         }
     }
     pub fn scene (&self) -> Option<usize> {
         use Selection::*;
-        match self { Clip(_, s) => Some(*s), Scene(s) => Some(*s), _ => None }
+        match self {
+            Scene(scene) | TrackClip { scene, .. } => Some(*scene),
+            _ => None
+        }
     }
     pub fn scene_next (&self, len: usize) -> Self {
+        use Selection::*;
         match self {
-            Selection::Mix => Selection::Scene(0),
-            Selection::Track(t) => Selection::Clip(*t, 0),
-            Selection::Scene(s) if s + 1 < len => Selection::Scene(s + 1),
-            Selection::Scene(s) => Selection::Mix,
-            Selection::Clip(t, s) if s + 1 < len => Selection::Clip(*t, s + 1),
-            Selection::Clip(t, s) => Selection::Track(*t),
+            Mix      => Scene(0),
+            Track(t) => TrackClip { track: *t, scene: 0 },
+            Scene(s) => if s + 1 < len {
+                Scene(s + 1)
+            } else {
+                Mix
+            },
+            TrackClip { track, scene } => if scene + 1 < len {
+                TrackClip { track: *track, scene: scene + 1 }
+            } else {
+                Track(*track)
+            },
+            _ => todo!()
         }
     }
     pub fn scene_prev (&self) -> Self {
+        use Selection::*;
         match self {
-            Selection::Mix        => Selection::Mix,
-            Selection::Track(t)   => Selection::Track(*t),
-            Selection::Scene(0)   => Selection::Mix,
-            Selection::Scene(s)   => Selection::Scene(s - 1),
-            Selection::Clip(t, 0) => Selection::Track(*t),
-            Selection::Clip(t, s) => Selection::Clip(*t, s - 1),
+            Mix | Scene(0) => Mix,
+            Scene(s) => Scene(s - 1),
+            Track(t) => Track(*t),
+            TrackClip { track, scene: 0 } => Track(*track),
+            TrackClip { track, scene } => TrackClip { track: *track, scene: scene - 1 },
+            _ => todo!()
         }
     }
     pub fn describe (&self, tracks: &[Track], scenes: &[Scene]) -> Arc<str> {
+        use Selection::*;
         format!("{}", match self {
-            Self::Mix => "Everything".to_string(),
-            Self::Track(t) => tracks.get(*t).map(|track|format!("T{t}: {}", &track.name))
-                .unwrap_or_else(||"T??".into()),
-            Self::Scene(s) => scenes.get(*s).map(|scene|format!("S{s}: {}", &scene.name))
+            Mix => "Everything".to_string(),
+            Scene(s) => scenes.get(*s).map(|scene|format!("S{s}: {}", &scene.name))
                 .unwrap_or_else(||"S??".into()),
-            Self::Clip(t, s) => match (tracks.get(*t), scenes.get(*s)) {
-                (Some(_), Some(scene)) => match scene.clip(*t) {
-                    Some(clip) => format!("T{t} S{s} C{}", &clip.read().unwrap().name),
-                    None       => format!("T{t} S{s}: Empty")
+            Track(t) => tracks.get(*t).map(|track|format!("T{t}: {}", &track.name))
+                .unwrap_or_else(||"T??".into()),
+            TrackClip { track, scene } => match (tracks.get(*track), scenes.get(*scene)) {
+                (Some(_), Some(s)) => match s.clip(*track) {
+                    Some(clip) => format!("T{track} S{scene} C{}", &clip.read().unwrap().name),
+                    None       => format!("T{track} S{scene}: Empty")
                 },
-                _ => format!("T{t} S{s}: Empty"),
-            }
+                _ => format!("T{track} S{scene}: Empty"),
+            },
+            _ => todo!()
         }).into()
     }
 }
@@ -739,11 +787,3 @@ impl HasTracks for Tek {
     fn tracks (&self) -> &Vec<Track> { &self.tracks }
     fn tracks_mut (&mut self) -> &mut Vec<Track> { &mut self.tracks }
 }
-
-#[derive(Debug)]
-pub enum Device {
-    Sequencer(MidiPlayer),
-    Sampler(Sampler),
-    #[cfg(feature="host")]
-    Plugin(Plugin),
-}

crates/app/src/pool/pool_mode.rs

@@ -16,3 +16,4 @@ pub enum PoolMode {
     /// Save clip to disk
     Export(usize, FileBrowser),
 }
+

crates/app/src/view.rs

@@ -181,11 +181,12 @@ impl Tek {
     }
 
     pub(crate) fn tracks_with_sizes (&self) -> impl TracksSizes<'_> {
+        use Selection::*;
         let mut x = 0;
         let editing = self.is_editing();
         let active = match self.selected() {
-            Selection::Track(t)   if editing => Some(t),
-            Selection::Clip(t, _) if editing => Some(t),
+            Track(t) if editing => Some(t),
+            TrackClip { track, .. } if editing => Some(track),
             _ => None
         };
         let bigger  = self.editor_w();
@@ -200,10 +201,11 @@ impl Tek {
     pub(crate) fn scenes_with_sizes (&self, editing: bool, height: usize, larger: usize)
         -> impl ScenesSizes<'_>
     {
+        use Selection::*;
         let (selected_track, selected_scene) = match self.selected() {
-            Selection::Track(t)   => (Some(*t), None),
-            Selection::Scene(s)   => (None,     Some(*s)),
-            Selection::Clip(t, s) => (Some(*t), Some(*s)),
+            Track(t) => (Some(*t), None),
+            Scene(s) => (None, Some(*s)),
+            TrackClip { track, scene } => (Some(*track), Some(*scene)),
             _ => (None, None)
         };
         let mut y = 0;
@@ -304,8 +306,10 @@ impl<'a> ArrangerView<'a> {
 
     /// Render input matrix.
     pub(crate) fn inputs (&'a self) -> impl Content<TuiOut> + 'a {
-        Tui::bg(Color::Reset,
-            Bsp::s(Bsp::s(self.input_routes(), self.input_ports()), self.input_intos()))
+        Tui::bg(Color::Reset, Bsp::s(
+            Bsp::s(self.input_routes(), self.input_ports()),
+            self.input_intos()
+        ))
     }
 
     fn input_routes (&'a self) -> impl Content<TuiOut> + 'a {
@@ -313,13 +317,12 @@ impl<'a> ArrangerView<'a> {
             .left(self.width_side,
                 io_ports(Tui::g(224), Tui::g(32), ||self.app.inputs_with_sizes()))
             .middle(self.width_mid,
-                per_track_top(
-                    self.width_mid,
-                    ||self.app.tracks_with_sizes(),
-                    move|_, &Track { color, .. }|{
-                        io_conns(color.dark.rgb, color.darker.rgb, ||self.app.inputs_with_sizes())
-                    }
-                ))
+                per_track_top(self.width_mid, ||self.tracks_with_sizes_scrolled(),
+                    move|_, &Track { color, .. }|io_conns(
+                        color.dark.rgb,
+                        color.darker.rgb,
+                        ||self.app.inputs_with_sizes()
+                    )))
     }
 
     fn input_ports (&'a self) -> impl Content<TuiOut> + 'a {
@@ -331,7 +334,7 @@ impl<'a> ArrangerView<'a> {
             .middle(self.width_mid,
                 per_track_top(
                     self.width_mid,
-                    ||self.app.tracks_with_sizes(),
+                    ||self.tracks_with_sizes_scrolled(),
                     move|t, track|{
                         let rec = track.player.recording;
                         let mon = track.player.monitoring;
@@ -353,14 +356,12 @@ impl<'a> ArrangerView<'a> {
     fn input_intos (&'a self) -> impl Content<TuiOut> + 'a {
         Tryptich::top(2)
             .left(self.width_side,
-                Bsp::s(Align::e("Input:"), Align::e("Into:")))
+                Bsp::s(Align::e("Input:"), Align::e("Into clip:")))
             .middle(self.width_mid,
                 per_track_top(
                     self.width_mid,
-                    ||self.app.tracks_with_sizes(),
-                    |_, _|{
-                        Tui::bg(Reset, Align::c(Bsp::s(OctaveVertical::default(), " ------ ")))
-                    }))
+                    ||self.tracks_with_sizes_scrolled(),
+                    |_, _|Tui::bg(Reset, Align::c(Bsp::s(OctaveVertical::default(), " ------ ")))))
     }
 
     /// Render output matrix.
@@ -373,30 +374,35 @@ impl<'a> ArrangerView<'a> {
 
     fn output_nexts (&'a self) -> impl Content<TuiOut> + 'a {
         Tryptich::top(2)
-            .left(self.width_side, Align::ne("From:"))
+            .left(self.width_side, Align::ne("From clip:"))
             .middle(self.width_mid, per_track_top(
                 self.width_mid,
                 ||self.tracks_with_sizes_scrolled(),
-                |_, _|{
-                    Tui::bg(Reset, Align::c(Bsp::s(" ------ ", OctaveVertical::default())))
+                |_, _|Tui::bg(Reset, Align::c(Bsp::s(" ------ ", OctaveVertical::default())))))
+    }
+
+    fn output_froms (&'a self) -> impl Content<TuiOut> + 'a {
+        let label = Align::ne("Next clip:");
+        Tryptich::top(2).left(self.width_side, label).middle(self.width_mid, per_track_top(
+            self.width_mid, ||self.tracks_with_sizes_scrolled(), |t, track|{
+                let queued       = track.player.next_clip.is_some();
+                let queued_blank = Thunk::new(||Tui::bg(Reset, " ------ "));
+                let queued_clip  = Thunk::new(||{
+                    let title = if let Some((_, clip)) = track.player.next_clip.as_ref() {
+                        if let Some(clip) = clip {
+                            clip.read().unwrap().name.as_ref().clone()
+                        } else {
+                            "Stop"
+                        }
+                    } else {
+                        ""
+                    };
+                    Tui::bg(Reset, title)
+                });
+                Either(queued, queued_clip, queued_blank)
             }))
     }
-    fn output_froms (&'a self) -> impl Content<TuiOut> + 'a {
-        Tryptich::top(2)
-            .left(self.width_side, Align::ne("Next:"))
-            .middle(self.width_mid, per_track_top(
-                self.width_mid,
-                ||self.tracks_with_sizes_scrolled(),
-                |t, track|Either(
-                    track.player.next_clip.is_some(),
-                    Thunk::new(||Tui::bg(Reset, format!("{:?}",
-                        track.player.next_clip.as_ref()
-                            .map(|(moment, clip)|clip.as_ref()
-                                .map(|clip|clip.read().unwrap().name.clone()))
-                            .flatten().as_ref()))),
-                    Thunk::new(||Tui::bg(Reset, " ------ "))
-                )))
-    }
+
     fn output_ports (&'a self) -> impl Content<TuiOut> + 'a {
         Tryptich::top(1)
             .left(self.width_side,
@@ -412,13 +418,18 @@ impl<'a> ArrangerView<'a> {
                         let solo = false;
                         let mute = if mute { White } else { t.color.darkest.rgb };
                         let solo = if solo { White } else { t.color.darkest.rgb };
-                        let bg_1 = if self.track_selected == Some(i) { t.color.light.rgb } else { t.color.base.rgb };
+                        let bg_1 = if self.track_selected == Some(i) {
+                            t.color.light.rgb
+                        } else {
+                            t.color.base.rgb
+                        };
                         let bg_2 = if i > 0 { t.color.base.rgb } else { Reset };
                         let mute = Tui::fg_bg(mute, bg_1, "Play ");
                         let solo = Tui::fg_bg(solo, bg_1, "Solo ");
                         wrap(bg_1, Tui::g(224), Tui::bold(true, Fill::x(Bsp::e(mute, solo))))
                     }))
     }
+
     fn output_conns (&'a self) -> impl Content<TuiOut> + 'a {
         Tryptich::top(self.outputs_height)
             .left(self.width_side,
@@ -740,8 +751,9 @@ pub(crate) fn heading <'a> (
 pub(crate) fn io_ports <'a, T: PortsSizes<'a>> (
     fg: Color, bg: Color, iter: impl Fn()->T + Send + Sync + 'a
 ) -> impl Content<TuiOut> + 'a {
-    Map::new(iter,
-        move|(index, name, connections, y, y2): (usize, &'a Arc<str>, &'a [PortConnect], usize, usize), _|
+    Map::new(iter, move|(
+        index, name, connections, y, y2
+    ): (usize, &'a Arc<str>, &'a [PortConnect], usize, usize), _|
         map_south(y as u16, (y2-y) as u16, Bsp::s(
             Fill::x(Tui::bold(true, Tui::fg_bg(fg, bg, Align::w(Bsp::e(" 󰣲 ", name))))),
             Map::new(||connections.iter(), move|connect: &'a PortConnect, index|map_south(index as u16, 1,
@@ -752,8 +764,9 @@ pub(crate) fn io_ports <'a, T: PortsSizes<'a>> (
 pub(crate) fn io_conns <'a, T: PortsSizes<'a>> (
     fg: Color, bg: Color, iter: impl Fn()->T + Send + Sync + 'a
 ) -> impl Content<TuiOut> + 'a {
-    Map::new(iter,
-        move|(index, name, connections, y, y2): (usize, &'a Arc<str>, &'a [PortConnect], usize, usize), _|
+    Map::new(iter, move|(
+        index, name, connections, y, y2
+    ): (usize, &'a Arc<str>, &'a [PortConnect], usize, usize), _|
         map_south(y as u16, (y2-y) as u16, Bsp::s(
             Fill::x(Tui::bold(true, wrap(bg, fg, Fill::x(Align::w("▞▞▞▞ ▞▞▞▞"))))),
             Map::new(||connections.iter(), move|connect, index|map_south(index as u16, 1,

crates/cli/tek.rs

@@ -185,12 +185,12 @@ impl Cli {
                     _ => vec![]
                 },
                 scenes,
-                selected: Selection::Clip(0, 0),
+                selected: Selection::TrackClip { track: 0, scene: 0 },
                 ..Default::default()
             };
             if let &LaunchMode::Arranger { scenes, tracks, track_width, .. } = mode {
                 app.arranger = Default::default();
-                app.selected = Selection::Clip(1, 1);
+                app.selected = Selection::TrackClip { track: 1, scene: 1 };
                 app.scenes_add(scenes)?;
                 app.tracks_add(tracks, Some(track_width), &[], &[])?;
             }

crates/device/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name    = "tek_device"
+edition = { workspace = true }
+version = { workspace = true }
+
+[dependencies]
+tengri     = { workspace = true }
+tek_engine = { workspace = true }
+uuid       = { workspace = true, optional = true }
+livi       = { workspace = true, optional = true }
+symphonia  = { workspace = true, optional = true }
+wavers     = { workspace = true, optional = true }
+
+[features]
+default   = [ "sequencer", "sampler" ]
+lv2       = [ "livi" ]
+sampler   = [ "symphonia", "wavers" ]
+sequencer = [ "uuid" ]

crates/device/src/lib.rs

@@ -0,0 +1,35 @@
+#![feature(let_chains)]
+
+pub(crate) use std::cmp::Ord;
+pub(crate) use std::fmt::{Debug, Formatter};
+pub(crate) use std::thread::JoinHandle;
+pub(crate) use std::sync::{Arc, RwLock, atomic::{AtomicUsize, Ordering::Relaxed}};
+pub(crate) use std::fs::File;
+pub(crate) use std::path::PathBuf;
+pub(crate) use std::error::Error;
+pub(crate) use std::ffi::OsString;
+
+pub(crate) use ::tengri::{dsl::*, input::*, output::*, tui::{*, ratatui::prelude::*}};
+pub(crate) use ::tek_engine::*;
+pub(crate) use ::tek_engine::midi::{u7, LiveEvent, MidiMessage};
+pub(crate) use ::tek_engine::jack::{Control, ProcessScope, MidiWriter, RawMidi};
+pub(crate) use ratatui::{prelude::Rect, widgets::{Widget, canvas::{Canvas, Line}}};
+
+#[cfg(feature = "sequencer")] mod sequencer;
+#[cfg(feature = "sequencer")] pub use self::sequencer::*;
+
+#[cfg(feature = "sampler")] mod sampler;
+#[cfg(feature = "sampler")] pub use self::sampler::*;
+
+#[cfg(feature = "plugin")] mod plugin;
+#[cfg(feature = "plugin")] pub use self::plugin::*;
+
+#[derive(Debug)]
+pub enum Device {
+    #[cfg(feature = "sequencer")]
+    Sequencer(MidiPlayer),
+    #[cfg(feature = "sampler")]
+    Sampler(Sampler),
+    #[cfg(feature = "plugin")]
+    Plugin(Plugin),
+}

crates/device/src/plugin.rs

@@ -1,5 +1,11 @@
 use crate::*;
 
+mod lv2;
+mod lv2_gui;
+mod lv2_tui;
+mod vst2_tui;
+mod vst3_tui;
+
 /// A plugin device.
 #[derive(Debug)]
 pub struct Plugin {

crates/device/src/sampler.rs

@@ -1,13 +1,5 @@
-#![feature(let_chains)]
+use crate::*;
 
-pub(crate) use ::tek_jack::{*, jack::*};
-pub(crate) use ::tek_midi::{*, midly::{*, live::*, num::*}};
-pub(crate) use ::tengri::{dsl::*, input::*, output::*, tui::{*, ratatui::prelude::*}};
-pub(crate) use std::sync::{Arc, RwLock, atomic::{AtomicUsize, Ordering::Relaxed}};
-pub(crate) use std::fs::File;
-pub(crate) use std::path::PathBuf;
-pub(crate) use std::error::Error;
-pub(crate) use std::ffi::OsString;
 pub(crate) use symphonia::{
     core::{
         formats::Packet,
@@ -19,7 +11,6 @@ pub(crate) use symphonia::{
     },
     default::get_codecs,
 };
-pub(crate) use ratatui::{prelude::Rect, widgets::{Widget, canvas::{Canvas, Line}}};
 
 mod sampler_api;    pub use self::sampler_api::*;
 mod sampler_audio;  pub use self::sampler_audio::*;

crates/device/src/sequencer.rs

@@ -1,8 +1,9 @@
-mod clip_editor; pub use self::clip_editor::*;
-mod clip_launch; pub use self::clip_launch::*;
-mod clip_model;  pub use self::clip_model::*;
-mod clip_play;   pub use self::clip_play::*;
-mod clip_view;   pub use self::clip_view::*;
+use crate::*;
+
+mod seq_clip;   pub use self::seq_clip::*;
+mod seq_launch; pub use self::seq_launch::*;
+mod seq_model;  pub use self::seq_model::*;
+mod seq_view;   pub use self::seq_view::*;
 
 pub trait HasEditor {
     fn editor (&self) -> &Option<MidiEditor>;

crates/device/src/sequencer/seq_launch.rs

@@ -87,4 +87,3 @@ pub trait HasPlayClip: HasClock {
         FieldV(color, "Next:", format!("{} {}", time, name))
     }
 }
-

crates/device/src/sequencer/seq_model.rs

@@ -0,0 +1,452 @@
+//! MIDI player
+use crate::*;
+
+pub trait HasPlayer {
+    fn player (&self) -> &impl MidiPlayerApi;
+    fn player_mut (&mut self) -> &mut impl MidiPlayerApi;
+}
+
+#[macro_export] macro_rules! has_player {
+    (|$self:ident:$Struct:ident$(<$($L:lifetime),*$($T:ident$(:$U:path)?),*>)?|$cb:expr) => {
+        impl $(<$($L),*$($T $(: $U)?),*>)? HasPlayer for $Struct $(<$($L),*$($T),*>)? {
+            fn player (&$self) -> &impl MidiPlayerApi { &$cb }
+            fn player_mut (&mut $self) -> &mut impl MidiPlayerApi { &mut$cb }
+        }
+    }
+}
+
+pub trait MidiPlayerApi: MidiRecordApi + MidiPlaybackApi + Send + Sync {}
+
+impl MidiPlayerApi for MidiPlayer {}
+
+/// Contains state for playing a clip
+pub struct MidiPlayer {
+    /// State of clock and playhead
+    pub clock:       Clock,
+    /// Start time and clip being played
+    pub play_clip:   Option<(Moment, Option<Arc<RwLock<MidiClip>>>)>,
+    /// Start time and next clip
+    pub next_clip:   Option<(Moment, Option<Arc<RwLock<MidiClip>>>)>,
+    /// 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_ins:    Vec<JackMidiIn>,
+    /// Play from current sequence to MIDI ports
+    pub midi_outs:   Vec<JackMidiOut>,
+    /// Notes currently held at input
+    pub notes_in:    Arc<RwLock<[bool; 128]>>,
+    /// Notes currently held at output
+    pub notes_out:   Arc<RwLock<[bool; 128]>>,
+    /// MIDI output buffer
+    pub note_buf:    Vec<u8>,
+}
+
+impl Default for MidiPlayer {
+    fn default () -> Self {
+        Self {
+            play_clip:  None,
+            next_clip:  None,
+            recording:  false,
+            monitoring: false,
+            overdub:    false,
+
+            notes_in:   RwLock::new([false;128]).into(),
+            notes_out:  RwLock::new([false;128]).into(),
+            note_buf:   vec![0;8],
+            reset:      true,
+
+            midi_ins:   vec![],
+            midi_outs:  vec![],
+            clock:      Clock::default(),
+        }
+    }
+}
+
+impl MidiPlayer {
+    pub fn new (
+        name:      impl AsRef<str>,
+        jack:      &Jack,
+        clock:     Option<&Clock>,
+        clip:      Option<&Arc<RwLock<MidiClip>>>,
+        midi_from: &[PortConnect],
+        midi_to:   &[PortConnect],
+    ) -> Usually<Self> {
+        let _name = name.as_ref();
+        let clock = clock.cloned().unwrap_or_default();
+        Ok(Self {
+            midi_ins:   vec![JackMidiIn::new(jack,  format!("M/{}", name.as_ref()), midi_from)?,],
+            midi_outs:  vec![JackMidiOut::new(jack, format!("{}/M", name.as_ref()), midi_to)?,  ],
+            play_clip:  clip.map(|clip|(Moment::zero(&clock.timebase), Some(clip.clone()))),
+            clock,
+            note_buf:   vec![0;8],
+            reset:      true,
+            recording:  false,
+            monitoring: false,
+            overdub:    false,
+            next_clip:  None,
+            notes_in:   RwLock::new([false;128]).into(),
+            notes_out:  RwLock::new([false;128]).into(),
+        })
+    }
+}
+
+impl std::fmt::Debug for MidiPlayer {
+    fn fmt (&self, f: &mut std::fmt::Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
+        f.debug_struct("MidiPlayer")
+            .field("clock",     &self.clock)
+            .field("play_clip", &self.play_clip)
+            .field("next_clip", &self.next_clip)
+            .finish()
+    }
+}
+
+has_clock!(|self: MidiPlayer|self.clock);
+
+impl HasMidiIns for MidiPlayer {
+    fn midi_ins (&self) -> &Vec<JackMidiIn> { &self.midi_ins }
+    fn midi_ins_mut (&mut self) -> &mut Vec<JackMidiIn> { &mut self.midi_ins }
+}
+
+impl HasMidiOuts for MidiPlayer {
+    fn midi_outs (&self) -> &Vec<JackMidiOut> { &self.midi_outs }
+    fn midi_outs_mut (&mut self) -> &mut Vec<JackMidiOut> { &mut self.midi_outs }
+    fn midi_note (&mut self) -> &mut Vec<u8> { &mut self.note_buf }
+}
+
+/// Hosts the JACK callback for a single MIDI player
+pub struct PlayerAudio<'a, T: MidiPlayerApi>(
+    /// Player
+    pub &'a mut T,
+    /// Note buffer
+    pub &'a mut Vec<u8>,
+    /// Note chunk buffer
+    pub &'a mut Vec<Vec<Vec<u8>>>,
+);
+
+/// JACK process callback for a sequencer's clip player/recorder.
+impl<T: MidiPlayerApi> Audio for PlayerAudio<'_, T> {
+    fn process (&mut self, _: &Client, scope: &ProcessScope) -> Control {
+        let model    = &mut self.0;
+        let note_buf = &mut self.1;
+        let midi_buf = &mut self.2;
+        // Clear output buffer(s)
+        model.clear(scope, midi_buf, false);
+        // Write chunk of clip to output, handle switchover
+        if model.play(scope, note_buf, midi_buf) {
+            model.switchover(scope, note_buf, midi_buf);
+        }
+        if model.has_midi_ins() {
+            if model.recording() || model.monitoring() {
+                // Record and/or monitor input
+                model.record(scope, midi_buf)
+            } else if model.has_midi_outs() && model.monitoring() {
+                // Monitor input to output
+                model.monitor(scope, midi_buf)
+            }
+        }
+        // Write to output port(s)
+        model.write(scope, midi_buf);
+        Control::Continue
+    }
+}
+
+impl MidiRecordApi for MidiPlayer {
+    fn recording (&self) -> bool {
+        self.recording
+    }
+    fn recording_mut (&mut self) -> &mut bool {
+        &mut self.recording
+    }
+    fn monitoring (&self) -> bool {
+        self.monitoring
+    }
+    fn monitoring_mut (&mut self) -> &mut bool {
+        &mut self.monitoring
+    }
+    fn overdub (&self) -> bool {
+        self.overdub
+    }
+    fn overdub_mut (&mut self) -> &mut bool {
+        &mut self.overdub
+    }
+    fn notes_in (&self) -> &Arc<RwLock<[bool; 128]>> {
+        &self.notes_in
+    }
+}
+
+impl MidiPlaybackApi for MidiPlayer {
+    fn notes_out (&self) -> &Arc<RwLock<[bool; 128]>> {
+        &self.notes_out
+    }
+}
+
+impl HasPlayClip for MidiPlayer {
+    fn reset (&self) -> bool {
+        self.reset
+    }
+    fn reset_mut (&mut self) -> &mut bool {
+        &mut self.reset
+    }
+    fn play_clip (&self) -> &Option<(Moment, Option<Arc<RwLock<MidiClip>>>)> {
+        &self.play_clip
+    }
+    fn play_clip_mut (&mut self) -> &mut Option<(Moment, Option<Arc<RwLock<MidiClip>>>)> {
+        &mut self.play_clip
+    }
+    fn next_clip (&self) -> &Option<(Moment, Option<Arc<RwLock<MidiClip>>>)> {
+        &self.next_clip
+    }
+    fn next_clip_mut (&mut self) -> &mut Option<(Moment, Option<Arc<RwLock<MidiClip>>>)> {
+        &mut self.next_clip
+    }
+}
+
+pub trait MidiRecordApi: HasClock + HasPlayClip + HasMidiIns {
+    fn notes_in (&self) -> &Arc<RwLock<[bool;128]>>;
+
+    fn recording (&self) -> bool;
+
+    fn recording_mut (&mut self) -> &mut bool;
+
+    fn toggle_record (&mut self) {
+        *self.recording_mut() = !self.recording();
+    }
+
+    fn monitoring (&self) -> bool;
+
+    fn monitoring_mut (&mut self) -> &mut bool;
+
+    fn toggle_monitor (&mut self) {
+        *self.monitoring_mut() = !self.monitoring();
+    }
+
+    fn overdub (&self) -> bool;
+
+    fn overdub_mut (&mut self) -> &mut bool;
+
+    fn toggle_overdub (&mut self) {
+        *self.overdub_mut() = !self.overdub();
+    }
+
+    fn monitor (&mut self, scope: &ProcessScope, midi_buf: &mut Vec<Vec<Vec<u8>>>) {
+        // For highlighting keys and note repeat
+        let notes_in = self.notes_in().clone();
+        let monitoring = self.monitoring();
+        for input in self.midi_ins_mut().iter() {
+            for (sample, event, bytes) in parse_midi_input(input.port().iter(scope)) {
+                if let LiveEvent::Midi { message, .. } = event {
+                    if monitoring {
+                        midi_buf[sample].push(bytes.to_vec());
+                    }
+                    // FIXME: don't lock on every event!
+                    update_keys(&mut notes_in.write().unwrap(), &message);
+                }
+            }
+        }
+    }
+
+    fn record (&mut self, scope: &ProcessScope, midi_buf: &mut Vec<Vec<Vec<u8>>>) {
+        if self.monitoring() {
+            self.monitor(scope, midi_buf);
+        }
+        if !self.clock().is_rolling() {
+            return
+        }
+        if let Some((started, ref clip)) = self.play_clip().clone() {
+            self.record_clip(scope, started, clip, midi_buf);
+        }
+        if let Some((_start_at, _clip)) = &self.next_clip() {
+            self.record_next();
+        }
+    }
+
+    fn record_clip (
+        &mut self,
+        scope:     &ProcessScope,
+        started:   Moment,
+        clip:      &Option<Arc<RwLock<MidiClip>>>,
+        _midi_buf: &mut Vec<Vec<Vec<u8>>>
+    ) {
+        if let Some(clip) = clip {
+            let sample0    = scope.last_frame_time() as usize;
+            let start      = started.sample.get() as usize;
+            let _recording = self.recording();
+            let timebase   = self.clock().timebase().clone();
+            let quant      = self.clock().quant.get();
+            let mut clip = clip.write().unwrap();
+            let length     = clip.length;
+            for input in self.midi_ins_mut().iter() {
+                for (sample, event, _bytes) in parse_midi_input(input.port().iter(scope)) {
+                    if let LiveEvent::Midi { message, .. } = event {
+                        clip.record_event({
+                            let sample    = (sample0 + sample - start) as f64;
+                            let pulse     = timebase.samples_to_pulse(sample);
+                            let quantized = (pulse / quant).round() * quant;
+                            quantized as usize % length
+                        }, message);
+                    }
+                }
+            }
+        }
+    }
+
+    fn record_next (&mut self) {
+        // TODO switch to next clip and record into it
+    }
+
+}
+
+pub trait MidiPlaybackApi: HasPlayClip + HasClock + HasMidiOuts {
+
+    fn notes_out (&self) -> &Arc<RwLock<[bool;128]>>;
+
+    /// Clear the section of the output buffer that we will be using,
+    /// emitting "all notes off" at start of buffer if requested.
+    fn clear (
+        &mut self, scope: &ProcessScope, out: &mut [Vec<Vec<u8>>], reset: bool
+    ) {
+        let n_frames = (scope.n_frames() as usize).min(out.len());
+        for frame in &mut out[0..n_frames] {
+            frame.clear();
+        }
+        if reset {
+            all_notes_off(out);
+        }
+    }
+
+    /// Output notes from clip to MIDI output ports.
+    fn play (
+        &mut self, scope: &ProcessScope, note_buf: &mut Vec<u8>, out: &mut [Vec<Vec<u8>>]
+    ) -> bool {
+        if !self.clock().is_rolling() {
+            return false
+        }
+        // If a clip is playing, write a chunk of MIDI events from it to the output buffer.
+        // If no clip is playing, prepare for switchover immediately.
+        self.play_clip().as_ref().map_or(true, |(started, clip)|{
+            self.play_chunk(scope, note_buf, out, started, clip)
+        })
+    }
+
+    /// Handle switchover from current to next playing clip.
+    fn switchover (
+        &mut self, scope: &ProcessScope, note_buf: &mut Vec<u8>, out: &mut [Vec<Vec<u8>>]
+    ) {
+        if !self.clock().is_rolling() {
+            return
+        }
+        let sample0 = scope.last_frame_time() as usize;
+        //let samples = scope.n_frames() as usize;
+        if let Some((start_at, clip)) = &self.next_clip() {
+            let start  = start_at.sample.get() as usize;
+            let sample = self.clock().started.read().unwrap()
+                .as_ref().unwrap().sample.get() as usize;
+            // If it's time to switch to the next clip:
+            if start <= sample0.saturating_sub(sample) {
+                // Samples elapsed since clip was supposed to start
+                let _skipped = sample0 - start;
+                // Switch over to enqueued clip
+                let started = Moment::from_sample(self.clock().timebase(), start as f64);
+                // Launch enqueued clip
+                *self.play_clip_mut() = Some((started, clip.clone()));
+                // Unset enqueuement (TODO: where to implement looping?)
+                *self.next_clip_mut() = None;
+                // Fill in remaining ticks of chunk from next clip.
+                self.play(scope, note_buf, out);
+            }
+        }
+    }
+
+    fn play_chunk (
+        &self,
+        scope:    &ProcessScope,
+        note_buf: &mut Vec<u8>,
+        out:      &mut [Vec<Vec<u8>>],
+        started:  &Moment,
+        clip:   &Option<Arc<RwLock<MidiClip>>>
+    ) -> bool {
+        // First sample to populate. Greater than 0 means that the first
+        // pulse of the clip falls somewhere in the middle of the chunk.
+        let sample = (scope.last_frame_time() as usize).saturating_sub(
+            started.sample.get() as usize +
+            self.clock().started.read().unwrap().as_ref().unwrap().sample.get() as usize
+        );
+        // Iterator that emits sample (index into output buffer at which to write MIDI event)
+        // paired with pulse (index into clip from which to take the MIDI event) for each
+        // sample of the output buffer that corresponds to a MIDI pulse.
+        let pulses = self.clock().timebase().pulses_between_samples(sample, sample + scope.n_frames() as usize);
+        // Notes active during current chunk.
+        let notes  = &mut self.notes_out().write().unwrap();
+        let length = clip.as_ref().map_or(0, |p|p.read().unwrap().length);
+        for (sample, pulse) in pulses {
+            // If a next clip is enqueued, and we're past the end of the current one,
+            // break the loop here (FIXME count pulse correctly)
+            let past_end = if clip.is_some() { pulse >= length } else { true };
+            if self.next_clip().is_some() && past_end {
+                return true
+            }
+            // If there's a currently playing clip, output notes from it to buffer:
+            if let Some(ref clip) = clip {
+                Self::play_pulse(clip, pulse, sample, note_buf, out, notes)
+            }
+        }
+        false
+    }
+
+    fn play_pulse (
+        clip:   &RwLock<MidiClip>,
+        pulse:    usize,
+        sample:   usize,
+        note_buf: &mut Vec<u8>,
+        out:      &mut [Vec<Vec<u8>>],
+        notes:    &mut [bool;128]
+    ) {
+        // Source clip from which the MIDI events will be taken.
+        let clip = clip.read().unwrap();
+        // Clip with zero length is not processed
+        if clip.length > 0 {
+            // Current pulse index in source clip
+            let pulse = pulse % clip.length;
+            // Output each MIDI event from clip at appropriate frames of output buffer:
+            for message in clip.notes[pulse].iter() {
+                // Clear output buffer for this MIDI event.
+                note_buf.clear();
+                // TODO: support MIDI channels other than CH1.
+                let channel = 0.into();
+                // Serialize MIDI event into message buffer.
+                LiveEvent::Midi { channel, message: *message }
+                    .write(note_buf)
+                    .unwrap();
+                // Append serialized message to output buffer.
+                out[sample].push(note_buf.clone());
+                // Update the list of currently held notes.
+                update_keys(&mut*notes, message);
+            }
+        }
+    }
+
+    /// Write a chunk of MIDI data from the output buffer to all assigned output ports.
+    fn write (&mut self, scope: &ProcessScope, out: &[Vec<Vec<u8>>]) {
+        let samples = scope.n_frames() as usize;
+        for port in self.midi_outs_mut().iter_mut() {
+            Self::write_port(&mut port.port_mut().writer(scope), samples, out)
+        }
+    }
+
+    /// Write a chunk of MIDI data from the output buffer to an output port.
+    fn write_port (writer: &mut MidiWriter, samples: usize, out: &[Vec<Vec<u8>>]) {
+        for (time, events) in out.iter().enumerate().take(samples) {
+            for bytes in events.iter() {
+                writer.write(&RawMidi { time: time as u32, bytes }).unwrap_or_else(|_|{
+                    panic!("Failed to write MIDI data: {bytes:?}");
+                });
+            }
+        }
+    }
+}

crates/engine/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name    = "tek_engine"
+edition = { workspace = true }
+version = { workspace = true }
+
+[dependencies]
+tengri       = { workspace = true }
+jack         = { workspace = true }
+midly        = { workspace = true }
+uuid         = { workspace = true }
+atomic_float = { workspace = true }

crates/engine/src/jack.rs

@@ -0,0 +1,18 @@
+use ::jack::{*, contrib::{*, ClosureProcessHandler}};
+    //contrib::ClosureProcessHandler,
+    //NotificationHandler,
+    //Client, AsyncClient, ClientOptions, ClientStatus,
+    //ProcessScope, Control, Frames,
+    //Port, PortId, PortSpec, PortFlags,
+    //Unowned, MidiIn, MidiOut, AudioIn, AudioOut,
+//};
+
+pub(crate) use PortConnectName::*;
+pub(crate) use PortConnectScope::*;
+pub(crate) use PortConnectStatus::*;
+pub(crate) use std::sync::{Arc, RwLock};
+
+mod jack_client; pub use self::jack_client::*;
+mod jack_event; pub use self::jack_event::*;
+mod jack_port; pub use self::jack_port::*;
+

crates/engine/src/jack/jack_client.rs

@@ -1,5 +1,5 @@
 use crate::*;
-use ::jack::contrib::*;
+use super::*;
 use self::JackState::*;
 
 /// Things that can provide a [jack::Client] reference.

crates/engine/src/jack/jack_event.rs

@@ -1,4 +1,5 @@
 use crate::*;
+use super::*;
 
 /// Event enum for JACK events.
 #[derive(Debug, Clone, PartialEq)] pub enum JackEvent {

crates/engine/src/jack/jack_port.rs

@@ -1,4 +1,5 @@
 use crate::*;
+use super::*;
 
 macro_rules! impl_port {
     ($Name:ident : $Spec:ident -> $Pair:ident |$jack:ident, $name:ident|$port:expr) => {

crates/engine/src/lib.rs

@@ -1,25 +1,28 @@
-mod clock; pub use self::clock::*;
+#![feature(type_alias_impl_trait)]
 
-mod time_moment;       pub use self::time_moment::*;
-mod time_note;         pub use self::time_note::*;
-mod time_perf;         pub use self::time_perf::*;
-mod time_pulse;        pub use self::time_pulse::*;
-mod time_sample_count; pub use self::time_sample_count::*;
-mod time_sample_rate;  pub use self::time_sample_rate::*;
-mod time_timebase;     pub use self::time_timebase::*;
-mod time_unit;         pub use self::time_unit::*;
-mod time_usec;         pub use self::time_usec::*;
+mod jack;  pub use self::jack::*;
+mod time;  pub use self::time::*;
+mod note;  pub use self::note::*;
+mod midi;  pub use self::midi::*;
 
-pub(crate) use ::tek_jack::{*, jack::{*, contrib::*}};
-pub(crate) use std::sync::{Arc, RwLock, atomic::{AtomicBool, AtomicUsize, Ordering::*}};
+pub(crate) use std::sync::{Arc, RwLock, atomic::{AtomicUsize, AtomicBool, Ordering::Relaxed}};
+pub(crate) use std::path::PathBuf;
+pub(crate) use std::fmt::Debug;
 pub(crate) use std::ops::{Add, Sub, Mul, Div, Rem};
-pub(crate) use ::tengri::{input::*, dsl::*};
+
+pub(crate) use ::tengri::input::*;
+pub(crate) use ::tengri::output::*;
+pub(crate) use ::tengri::dsl::*;
+pub(crate) use ::tengri::tui::*;
+pub(crate) use ::tengri::tui::ratatui::style::{Style, Stylize, Color};
+
 pub use ::atomic_float; pub(crate) use atomic_float::*;
 
 /// Standard result type.
-pub(crate) type Usually<T> = Result<T, Box<dyn std::error::Error>>;
+pub(crate) type Usually<T> = std::result::Result<T, Box<dyn std::error::Error>>;
+
 /// Standard optional result type.
-pub(crate) type Perhaps<T> = Result<Option<T>, Box<dyn std::error::Error>>;
+pub(crate) type Perhaps<T> = std::result::Result<Option<T>, Box<dyn std::error::Error>>;
 
 pub trait Gettable<T> {
     /// Returns current value

crates/engine/src/midi.rs

@@ -0,0 +1,60 @@
+use crate::*;
+
+pub use ::midly;
+pub(crate) use ::midly::{
+    MidiMessage,
+    num::*,
+    live::*,
+};
+
+/// Update notes_in array
+pub fn update_keys (keys: &mut[bool;128], message: &MidiMessage) {
+    match message {
+        MidiMessage::NoteOn  { key, .. } => { keys[key.as_int() as usize] = true; }
+        MidiMessage::NoteOff { key, .. } => { keys[key.as_int() as usize] = false; },
+        _ => {}
+    }
+}
+
+/// Return boxed iterator of MIDI events
+pub fn parse_midi_input <'a> (input: ::jack::MidiIter<'a>) -> Box<dyn Iterator<Item=(usize, LiveEvent<'a>, &'a [u8])> + 'a> {
+    Box::new(input.map(|::jack::RawMidi { time, bytes }|(
+        time as usize,
+        LiveEvent::parse(bytes).unwrap(),
+        bytes
+    )))
+}
+
+/// Add "all notes off" to the start of a buffer.
+pub fn all_notes_off (output: &mut [Vec<Vec<u8>>]) {
+    let mut buf = vec![];
+    let msg = MidiMessage::Controller { controller: 123.into(), value: 0.into() };
+    let evt = LiveEvent::Midi { channel: 0.into(), message: msg };
+    evt.write(&mut buf).unwrap();
+    output[0].push(buf);
+}
+
+/// Trait for thing that may receive MIDI.
+pub trait HasMidiIns {
+    fn midi_ins (&self) -> &Vec<JackMidiIn>;
+
+    fn midi_ins_mut (&mut self) -> &mut Vec<JackMidiIn>;
+
+    fn has_midi_ins (&self) -> bool {
+        !self.midi_ins().is_empty()
+    }
+}
+
+/// Trait for thing that may output MIDI.
+pub trait HasMidiOuts {
+    fn midi_outs (&self) -> &Vec<JackMidiOut>;
+
+    fn midi_outs_mut (&mut self) -> &mut Vec<JackMidiOut>;
+
+    fn has_midi_outs (&self) -> bool {
+        !self.midi_outs().is_empty()
+    }
+
+    /// Buffer for serializing a MIDI event. FIXME rename
+    fn midi_note (&mut self) -> &mut Vec<u8>;
+}

crates/engine/src/time.rs

@@ -0,0 +1,9 @@
+mod time_moment;       pub use self::time_moment::*;
+mod time_note;         pub use self::time_note::*;
+mod time_perf;         pub use self::time_perf::*;
+mod time_pulse;        pub use self::time_pulse::*;
+mod time_sample_count; pub use self::time_sample_count::*;
+mod time_sample_rate;  pub use self::time_sample_rate::*;
+mod time_timebase;     pub use self::time_timebase::*;
+mod time_unit;         pub use self::time_unit::*;
+mod time_usec;         pub use self::time_usec::*;

crates/engine/src/time/time_perf.rs

@@ -1,5 +1,6 @@
 use crate::*;
 use tengri::tui::PerfModel;
+use ::jack::ProcessScope;
 
 pub trait JackPerfModel {
     fn update_from_jack_scope (&self, t0: Option<u64>, scope: &ProcessScope);

crates/jack/Cargo.toml

@@ -1,7 +0,0 @@
-[package]
-name    = "tek_jack"
-edition = { workspace = true }
-version = { workspace = true }
-
-[dependencies]
-jack = { workspace = true }

crates/jack/src/lib.rs

@@ -1,17 +0,0 @@
-#![feature(type_alias_impl_trait)]
-mod jack_client; pub use self::jack_client::*;
-mod jack_event; pub use self::jack_event::*;
-mod jack_port; pub use self::jack_port::*;
-pub(crate) use PortConnectName::*;
-pub(crate) use PortConnectScope::*;
-pub(crate) use PortConnectStatus::*;
-pub(crate) use std::sync::{Arc, RwLock};
-pub use ::jack; pub(crate) use ::jack::{
-    //contrib::ClosureProcessHandler,
-    NotificationHandler,
-    Client, AsyncClient, ClientOptions, ClientStatus,
-    ProcessScope, Control, Frames,
-    Port, PortId, PortSpec, PortFlags,
-    Unowned, MidiIn, MidiOut, AudioIn, AudioOut,
-};
-pub(crate) type Usually<T> = Result<T, Box<dyn std::error::Error>>;

crates/midi/Cargo.toml

@@ -1,13 +0,0 @@
-[package]
-name    = "tek_midi"
-edition = { workspace = true }
-version = { workspace = true }
-
-[dependencies]
-tengri = { workspace = true }
-
-tek_jack = { workspace = true }
-tek_time = { workspace = true }
-
-midly = { workspace = true }
-uuid  = { workspace = true }

crates/midi/src/clip/clip_play.rs

@@ -1,208 +0,0 @@
-//! MIDI player
-use crate::*;
-
-pub trait HasPlayer {
-    fn player (&self) -> &impl MidiPlayerApi;
-    fn player_mut (&mut self) -> &mut impl MidiPlayerApi;
-}
-
-#[macro_export] macro_rules! has_player {
-    (|$self:ident:$Struct:ident$(<$($L:lifetime),*$($T:ident$(:$U:path)?),*>)?|$cb:expr) => {
-        impl $(<$($L),*$($T $(: $U)?),*>)? HasPlayer for $Struct $(<$($L),*$($T),*>)? {
-            fn player (&$self) -> &impl MidiPlayerApi { &$cb }
-            fn player_mut (&mut $self) -> &mut impl MidiPlayerApi { &mut$cb }
-        }
-    }
-}
-
-pub trait MidiPlayerApi: MidiRecordApi + MidiPlaybackApi + Send + Sync {}
-
-impl MidiPlayerApi for MidiPlayer {}
-
-/// Contains state for playing a clip
-pub struct MidiPlayer {
-    /// State of clock and playhead
-    pub clock:       Clock,
-    /// Start time and clip being played
-    pub play_clip:   Option<(Moment, Option<Arc<RwLock<MidiClip>>>)>,
-    /// Start time and next clip
-    pub next_clip:   Option<(Moment, Option<Arc<RwLock<MidiClip>>>)>,
-    /// 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_ins:    Vec<JackMidiIn>,
-    /// Play from current sequence to MIDI ports
-    pub midi_outs:   Vec<JackMidiOut>,
-    /// Notes currently held at input
-    pub notes_in:    Arc<RwLock<[bool; 128]>>,
-    /// Notes currently held at output
-    pub notes_out:   Arc<RwLock<[bool; 128]>>,
-    /// MIDI output buffer
-    pub note_buf:    Vec<u8>,
-}
-
-impl Default for MidiPlayer {
-    fn default () -> Self {
-        Self {
-            play_clip:  None,
-            next_clip:  None,
-            recording:  false,
-            monitoring: false,
-            overdub:    false,
-
-            notes_in:   RwLock::new([false;128]).into(),
-            notes_out:  RwLock::new([false;128]).into(),
-            note_buf:   vec![0;8],
-            reset:      true,
-
-            midi_ins:   vec![],
-            midi_outs:  vec![],
-            clock:      Clock::default(),
-        }
-    }
-}
-
-impl MidiPlayer {
-    pub fn new (
-        name:      impl AsRef<str>,
-        jack:      &Jack,
-        clock:     Option<&Clock>,
-        clip:      Option<&Arc<RwLock<MidiClip>>>,
-        midi_from: &[PortConnect],
-        midi_to:   &[PortConnect],
-    ) -> Usually<Self> {
-        let _name = name.as_ref();
-        let clock = clock.cloned().unwrap_or_default();
-        Ok(Self {
-            midi_ins:   vec![JackMidiIn::new(jack,  format!("M/{}", name.as_ref()), midi_from)?,],
-            midi_outs:  vec![JackMidiOut::new(jack, format!("{}/M", name.as_ref()), midi_to)?,  ],
-            play_clip:  clip.map(|clip|(Moment::zero(&clock.timebase), Some(clip.clone()))),
-            clock,
-            note_buf:   vec![0;8],
-            reset:      true,
-            recording:  false,
-            monitoring: false,
-            overdub:    false,
-            next_clip:  None,
-            notes_in:   RwLock::new([false;128]).into(),
-            notes_out:  RwLock::new([false;128]).into(),
-        })
-    }
-}
-
-impl std::fmt::Debug for MidiPlayer {
-    fn fmt (&self, f: &mut std::fmt::Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
-        f.debug_struct("MidiPlayer")
-            .field("clock",     &self.clock)
-            .field("play_clip", &self.play_clip)
-            .field("next_clip", &self.next_clip)
-            .finish()
-    }
-}
-
-has_clock!(|self: MidiPlayer|self.clock);
-
-impl HasMidiIns for MidiPlayer {
-    fn midi_ins (&self) -> &Vec<JackMidiIn> { &self.midi_ins }
-    fn midi_ins_mut (&mut self) -> &mut Vec<JackMidiIn> { &mut self.midi_ins }
-}
-
-impl HasMidiOuts for MidiPlayer {
-    fn midi_outs (&self) -> &Vec<JackMidiOut> { &self.midi_outs }
-    fn midi_outs_mut (&mut self) -> &mut Vec<JackMidiOut> { &mut self.midi_outs }
-    fn midi_note (&mut self) -> &mut Vec<u8> { &mut self.note_buf }
-}
-
-/// Hosts the JACK callback for a single MIDI player
-pub struct PlayerAudio<'a, T: MidiPlayerApi>(
-    /// Player
-    pub &'a mut T,
-    /// Note buffer
-    pub &'a mut Vec<u8>,
-    /// Note chunk buffer
-    pub &'a mut Vec<Vec<Vec<u8>>>,
-);
-
-/// JACK process callback for a sequencer's clip player/recorder.
-impl<T: MidiPlayerApi> Audio for PlayerAudio<'_, T> {
-    fn process (&mut self, _: &Client, scope: &ProcessScope) -> Control {
-        let model    = &mut self.0;
-        let note_buf = &mut self.1;
-        let midi_buf = &mut self.2;
-        // Clear output buffer(s)
-        model.clear(scope, midi_buf, false);
-        // Write chunk of clip to output, handle switchover
-        if model.play(scope, note_buf, midi_buf) {
-            model.switchover(scope, note_buf, midi_buf);
-        }
-        if model.has_midi_ins() {
-            if model.recording() || model.monitoring() {
-                // Record and/or monitor input
-                model.record(scope, midi_buf)
-            } else if model.has_midi_outs() && model.monitoring() {
-                // Monitor input to output
-                model.monitor(scope, midi_buf)
-            }
-        }
-        // Write to output port(s)
-        model.write(scope, midi_buf);
-        Control::Continue
-    }
-}
-
-impl MidiRecordApi for MidiPlayer {
-    fn recording (&self) -> bool {
-        self.recording
-    }
-    fn recording_mut (&mut self) -> &mut bool {
-        &mut self.recording
-    }
-    fn monitoring (&self) -> bool {
-        self.monitoring
-    }
-    fn monitoring_mut (&mut self) -> &mut bool {
-        &mut self.monitoring
-    }
-    fn overdub (&self) -> bool {
-        self.overdub
-    }
-    fn overdub_mut (&mut self) -> &mut bool {
-        &mut self.overdub
-    }
-    fn notes_in (&self) -> &Arc<RwLock<[bool; 128]>> {
-        &self.notes_in
-    }
-}
-
-impl MidiPlaybackApi for MidiPlayer {
-    fn notes_out (&self) -> &Arc<RwLock<[bool; 128]>> {
-        &self.notes_out
-    }
-}
-
-impl HasPlayClip for MidiPlayer {
-    fn reset (&self) -> bool {
-        self.reset
-    }
-    fn reset_mut (&mut self) -> &mut bool {
-        &mut self.reset
-    }
-    fn play_clip (&self) -> &Option<(Moment, Option<Arc<RwLock<MidiClip>>>)> {
-        &self.play_clip
-    }
-    fn play_clip_mut (&mut self) -> &mut Option<(Moment, Option<Arc<RwLock<MidiClip>>>)> {
-        &mut self.play_clip
-    }
-    fn next_clip (&self) -> &Option<(Moment, Option<Arc<RwLock<MidiClip>>>)> {
-        &self.next_clip
-    }
-    fn next_clip_mut (&mut self) -> &mut Option<(Moment, Option<Arc<RwLock<MidiClip>>>)> {
-        &mut self.next_clip
-    }
-}

crates/midi/src/lib.rs

@@ -1,21 +0,0 @@
-pub(crate) use std::sync::{Arc, RwLock, atomic::{AtomicUsize, AtomicBool, Ordering::Relaxed}};
-pub(crate) use std::path::PathBuf;
-pub(crate) use std::fmt::Debug;
-
-pub use ::midly;
-pub(crate) use ::midly::{*, num::*, live::*};
-
-pub(crate) use ::tek_time::*;
-pub(crate) use ::tek_jack::{*, jack::*};
-pub(crate) use ::tengri::input::*;
-pub(crate) use ::tengri::output::*;
-pub(crate) use ::tengri::dsl::*;
-pub(crate) use ::tengri::tui::*;
-pub(crate) use ::tengri::tui::ratatui::style::{Style, Stylize, Color};
-
-mod clip;  pub use self::clip::*;
-mod mode;  pub use self::mode::*;
-mod note;  pub use self::note::*;
-mod piano; pub use self::piano::*;
-mod pool;  pub use self::pool::*;
-mod port;  pub use self::port::*;

crates/midi/src/piano.rs

@@ -1,2 +0,0 @@
-mod piano_h; pub use self::piano_h::*;
-mod piano_v; pub use self::piano_v::*;

crates/midi/src/piano/piano_v.rs

@@ -1,34 +0,0 @@
-use crate::*;
-use Color::*;
-pub struct OctaveVertical {
-    on:     [bool; 12],
-    colors: [Color; 3]
-}
-impl Default for OctaveVertical {
-    fn default () -> Self {
-        Self {
-            on:     [false; 12],
-            colors: [Rgb(255,255,255), Rgb(0,0,0), Rgb(255,0,0)]
-        }
-    }
-}
-impl OctaveVertical {
-    fn color (&self, pitch: usize) -> Color {
-        let pitch = pitch % 12;
-        self.colors[if self.on[pitch] { 2 } else {
-            match pitch { 0 | 2 | 4 | 5 | 6 | 8 | 10 => 0, _ => 1 }
-        }]
-    }
-}
-impl Content<TuiOut> for OctaveVertical {
-    fn content (&self) -> impl Render<TuiOut> {
-        row!(
-            Tui::fg_bg(self.color(0),  self.color(1),  "▙"),
-            Tui::fg_bg(self.color(2),  self.color(3),  "▙"),
-            Tui::fg_bg(self.color(4),  self.color(5),  "▌"),
-            Tui::fg_bg(self.color(6),  self.color(7),  "▟"),
-            Tui::fg_bg(self.color(8),  self.color(9),  "▟"),
-            Tui::fg_bg(self.color(10), self.color(11), "▟"),
-        )
-    }
-}

crates/midi/src/port.rs

@@ -1,31 +0,0 @@
-use crate::*;
-
-mod port_in;  pub use self::port_in::*;
-mod port_out; pub use self::port_out::*;
-
-/// Update notes_in array
-pub fn update_keys (keys: &mut[bool;128], message: &MidiMessage) {
-    match message {
-        MidiMessage::NoteOn  { key, .. } => { keys[key.as_int() as usize] = true; }
-        MidiMessage::NoteOff { key, .. } => { keys[key.as_int() as usize] = false; },
-        _ => {}
-    }
-}
-
-/// Return boxed iterator of MIDI events
-pub fn parse_midi_input <'a> (input: MidiIter<'a>) -> Box<dyn Iterator<Item=(usize, LiveEvent<'a>, &'a [u8])> + 'a> {
-    Box::new(input.map(|RawMidi { time, bytes }|(
-        time as usize,
-        LiveEvent::parse(bytes).unwrap(),
-        bytes
-    )))
-}
-
-/// Add "all notes off" to the start of a buffer.
-pub fn all_notes_off (output: &mut [Vec<Vec<u8>>]) {
-    let mut buf = vec![];
-    let msg = MidiMessage::Controller { controller: 123.into(), value: 0.into() };
-    let evt = LiveEvent::Midi { channel: 0.into(), message: msg };
-    evt.write(&mut buf).unwrap();
-    output[0].push(buf);
-}

crates/midi/src/port/port_in.rs

@@ -1,107 +0,0 @@
-use crate::*;
-
-/// Trait for thing that may receive MIDI.
-pub trait HasMidiIns {
-    fn midi_ins (&self) -> &Vec<JackMidiIn>;
-
-    fn midi_ins_mut (&mut self) -> &mut Vec<JackMidiIn>;
-
-    fn has_midi_ins (&self) -> bool {
-        !self.midi_ins().is_empty()
-    }
-}
-
-pub trait MidiRecordApi: HasClock + HasPlayClip + HasMidiIns {
-    fn notes_in (&self) -> &Arc<RwLock<[bool;128]>>;
-
-    fn recording (&self) -> bool;
-
-    fn recording_mut (&mut self) -> &mut bool;
-
-    fn toggle_record (&mut self) {
-        *self.recording_mut() = !self.recording();
-    }
-
-    fn monitoring (&self) -> bool;
-
-    fn monitoring_mut (&mut self) -> &mut bool;
-
-    fn toggle_monitor (&mut self) {
-        *self.monitoring_mut() = !self.monitoring();
-    }
-
-    fn overdub (&self) -> bool;
-
-    fn overdub_mut (&mut self) -> &mut bool;
-
-    fn toggle_overdub (&mut self) {
-        *self.overdub_mut() = !self.overdub();
-    }
-
-    fn monitor (&mut self, scope: &ProcessScope, midi_buf: &mut Vec<Vec<Vec<u8>>>) {
-        // For highlighting keys and note repeat
-        let notes_in = self.notes_in().clone();
-        let monitoring = self.monitoring();
-        for input in self.midi_ins_mut().iter() {
-            for (sample, event, bytes) in parse_midi_input(input.port().iter(scope)) {
-                if let LiveEvent::Midi { message, .. } = event {
-                    if monitoring {
-                        midi_buf[sample].push(bytes.to_vec());
-                    }
-                    // FIXME: don't lock on every event!
-                    update_keys(&mut notes_in.write().unwrap(), &message);
-                }
-            }
-        }
-    }
-
-    fn record (&mut self, scope: &ProcessScope, midi_buf: &mut Vec<Vec<Vec<u8>>>) {
-        if self.monitoring() {
-            self.monitor(scope, midi_buf);
-        }
-        if !self.clock().is_rolling() {
-            return
-        }
-        if let Some((started, ref clip)) = self.play_clip().clone() {
-            self.record_clip(scope, started, clip, midi_buf);
-        }
-        if let Some((_start_at, _clip)) = &self.next_clip() {
-            self.record_next();
-        }
-    }
-
-    fn record_clip (
-        &mut self,
-        scope:     &ProcessScope,
-        started:   Moment,
-        clip:      &Option<Arc<RwLock<MidiClip>>>,
-        _midi_buf: &mut Vec<Vec<Vec<u8>>>
-    ) {
-        if let Some(clip) = clip {
-            let sample0    = scope.last_frame_time() as usize;
-            let start      = started.sample.get() as usize;
-            let _recording = self.recording();
-            let timebase   = self.clock().timebase().clone();
-            let quant      = self.clock().quant.get();
-            let mut clip = clip.write().unwrap();
-            let length     = clip.length;
-            for input in self.midi_ins_mut().iter() {
-                for (sample, event, _bytes) in parse_midi_input(input.port().iter(scope)) {
-                    if let LiveEvent::Midi { message, .. } = event {
-                        clip.record_event({
-                            let sample    = (sample0 + sample - start) as f64;
-                            let pulse     = timebase.samples_to_pulse(sample);
-                            let quantized = (pulse / quant).round() * quant;
-                            quantized as usize % length
-                        }, message);
-                    }
-                }
-            }
-        }
-    }
-
-    fn record_next (&mut self) {
-        // TODO switch to next clip and record into it
-    }
-
-}

crates/midi/src/port/port_out.rs

@@ -1,164 +0,0 @@
-use crate::*;
-
-/// Trait for thing that may output MIDI.
-pub trait HasMidiOuts {
-    fn midi_outs (&self) -> &Vec<JackMidiOut>;
-
-    fn midi_outs_mut (&mut self) -> &mut Vec<JackMidiOut>;
-
-    fn has_midi_outs (&self) -> bool {
-        !self.midi_outs().is_empty()
-    }
-
-    /// Buffer for serializing a MIDI event. FIXME rename
-    fn midi_note (&mut self) -> &mut Vec<u8>;
-}
-
-pub trait MidiPlaybackApi: HasPlayClip + HasClock + HasMidiOuts {
-
-    fn notes_out (&self) -> &Arc<RwLock<[bool;128]>>;
-
-    /// Clear the section of the output buffer that we will be using,
-    /// emitting "all notes off" at start of buffer if requested.
-    fn clear (
-        &mut self, scope: &ProcessScope, out: &mut [Vec<Vec<u8>>], reset: bool
-    ) {
-        let n_frames = (scope.n_frames() as usize).min(out.len());
-        for frame in &mut out[0..n_frames] {
-            frame.clear();
-        }
-        if reset {
-            all_notes_off(out);
-        }
-    }
-
-    /// Output notes from clip to MIDI output ports.
-    fn play (
-        &mut self, scope: &ProcessScope, note_buf: &mut Vec<u8>, out: &mut [Vec<Vec<u8>>]
-    ) -> bool {
-        if !self.clock().is_rolling() {
-            return false
-        }
-        // If a clip is playing, write a chunk of MIDI events from it to the output buffer.
-        // If no clip is playing, prepare for switchover immediately.
-        self.play_clip().as_ref().map_or(true, |(started, clip)|{
-            self.play_chunk(scope, note_buf, out, started, clip)
-        })
-    }
-
-    /// Handle switchover from current to next playing clip.
-    fn switchover (
-        &mut self, scope: &ProcessScope, note_buf: &mut Vec<u8>, out: &mut [Vec<Vec<u8>>]
-    ) {
-        if !self.clock().is_rolling() {
-            return
-        }
-        let sample0 = scope.last_frame_time() as usize;
-        //let samples = scope.n_frames() as usize;
-        if let Some((start_at, clip)) = &self.next_clip() {
-            let start  = start_at.sample.get() as usize;
-            let sample = self.clock().started.read().unwrap()
-                .as_ref().unwrap().sample.get() as usize;
-            // If it's time to switch to the next clip:
-            if start <= sample0.saturating_sub(sample) {
-                // Samples elapsed since clip was supposed to start
-                let _skipped = sample0 - start;
-                // Switch over to enqueued clip
-                let started = Moment::from_sample(self.clock().timebase(), start as f64);
-                // Launch enqueued clip
-                *self.play_clip_mut() = Some((started, clip.clone()));
-                // Unset enqueuement (TODO: where to implement looping?)
-                *self.next_clip_mut() = None;
-                // Fill in remaining ticks of chunk from next clip.
-                self.play(scope, note_buf, out);
-            }
-        }
-    }
-
-    fn play_chunk (
-        &self,
-        scope:    &ProcessScope,
-        note_buf: &mut Vec<u8>,
-        out:      &mut [Vec<Vec<u8>>],
-        started:  &Moment,
-        clip:   &Option<Arc<RwLock<MidiClip>>>
-    ) -> bool {
-        // First sample to populate. Greater than 0 means that the first
-        // pulse of the clip falls somewhere in the middle of the chunk.
-        let sample = (scope.last_frame_time() as usize).saturating_sub(
-            started.sample.get() as usize +
-            self.clock().started.read().unwrap().as_ref().unwrap().sample.get() as usize
-        );
-        // Iterator that emits sample (index into output buffer at which to write MIDI event)
-        // paired with pulse (index into clip from which to take the MIDI event) for each
-        // sample of the output buffer that corresponds to a MIDI pulse.
-        let pulses = self.clock().timebase().pulses_between_samples(sample, sample + scope.n_frames() as usize);
-        // Notes active during current chunk.
-        let notes  = &mut self.notes_out().write().unwrap();
-        let length = clip.as_ref().map_or(0, |p|p.read().unwrap().length);
-        for (sample, pulse) in pulses {
-            // If a next clip is enqueued, and we're past the end of the current one,
-            // break the loop here (FIXME count pulse correctly)
-            let past_end = if clip.is_some() { pulse >= length } else { true };
-            if self.next_clip().is_some() && past_end {
-                return true
-            }
-            // If there's a currently playing clip, output notes from it to buffer:
-            if let Some(ref clip) = clip {
-                Self::play_pulse(clip, pulse, sample, note_buf, out, notes)
-            }
-        }
-        false
-    }
-
-    fn play_pulse (
-        clip:   &RwLock<MidiClip>,
-        pulse:    usize,
-        sample:   usize,
-        note_buf: &mut Vec<u8>,
-        out:      &mut [Vec<Vec<u8>>],
-        notes:    &mut [bool;128]
-    ) {
-        // Source clip from which the MIDI events will be taken.
-        let clip = clip.read().unwrap();
-        // Clip with zero length is not processed
-        if clip.length > 0 {
-            // Current pulse index in source clip
-            let pulse = pulse % clip.length;
-            // Output each MIDI event from clip at appropriate frames of output buffer:
-            for message in clip.notes[pulse].iter() {
-                // Clear output buffer for this MIDI event.
-                note_buf.clear();
-                // TODO: support MIDI channels other than CH1.
-                let channel = 0.into();
-                // Serialize MIDI event into message buffer.
-                LiveEvent::Midi { channel, message: *message }
-                    .write(note_buf)
-                    .unwrap();
-                // Append serialized message to output buffer.
-                out[sample].push(note_buf.clone());
-                // Update the list of currently held notes.
-                update_keys(&mut*notes, message);
-            }
-        }
-    }
-
-    /// Write a chunk of MIDI data from the output buffer to all assigned output ports.
-    fn write (&mut self, scope: &ProcessScope, out: &[Vec<Vec<u8>>]) {
-        let samples = scope.n_frames() as usize;
-        for port in self.midi_outs_mut().iter_mut() {
-            Self::write_port(&mut port.port_mut().writer(scope), samples, out)
-        }
-    }
-
-    /// Write a chunk of MIDI data from the output buffer to an output port.
-    fn write_port (writer: &mut MidiWriter, samples: usize, out: &[Vec<Vec<u8>>]) {
-        for (time, events) in out.iter().enumerate().take(samples) {
-            for bytes in events.iter() {
-                writer.write(&RawMidi { time: time as u32, bytes }).unwrap_or_else(|_|{
-                    panic!("Failed to write MIDI data: {bytes:?}");
-                });
-            }
-        }
-    }
-}

crates/plugin/Cargo.toml

@@ -1,17 +0,0 @@
-[package]
-name    = "tek_plugin"
-edition = { workspace = true }
-version = { workspace = true }
-
-[dependencies]
-tengri = { workspace = true }
-
-tek_jack = { workspace = true }
-tek_time = { workspace = true }
-tek_midi = { workspace = true }
-
-livi = { workspace = true, optional = true }
-
-[features]
-default = [ "lv2" ]
-lv2 = [ "livi" ]

crates/plugin/src/lib.rs

@@ -1,8 +0,0 @@
-mod plugin; pub use self::plugin::*;
-mod lv2;    pub use self::lv2::*;
-pub(crate) use std::cmp::Ord;
-pub(crate) use std::fmt::{Debug, Formatter};
-pub(crate) use std::sync::{Arc, RwLock};
-pub(crate) use std::thread::JoinHandle;
-pub(crate) use ::tek_jack::{*, jack::*};
-pub(crate) use ::tengri::{output::*, tui::{*, ratatui::prelude::*}};

crates/sampler/Cargo.toml

@@ -1,14 +0,0 @@
-[package]
-name    = "tek_sampler"
-edition = { workspace = true }
-version = { workspace = true }
-
-[dependencies]
-tengri = { workspace = true }
-
-tek_jack = { workspace = true }
-tek_time = { workspace = true }
-tek_midi = { workspace = true }
-
-symphonia = { workspace = true }
-wavers    = { workspace = true }

crates/time/Cargo.toml

@@ -1,9 +0,0 @@
-[package]
-name    = "tek_time"
-edition = { workspace = true }
-version = { workspace = true }
-
-[dependencies]
-tengri = { workspace = true }
-tek_jack = { workspace = true }
-atomic_float = { workspace = true }