track init callback

src/control.rs

@@ -51,7 +51,7 @@ const KEYMAP: &'static [KeyBinding<App>] = keymap!(App {
         Ok(true)
     }],
     [Char('t'), CONTROL, "add_track",      "add a new track",           |app: &mut App| {
-        app.add_track(None)?;
+        app.add_track(None, None)?;
         Ok(true)
     }],
     [Char('`'), NONE,    "switch_mode",    "switch the display mode",   |app: &mut App| {

src/main.rs

@@ -40,48 +40,50 @@ pub fn main () -> Usually<()> {
         state.scene_cursor = 1;
         state.note_start   = 12;
         state.time_zoom    = 12;
-        state.midi_in   = Some(client.register_port("midi-in", MidiIn)?);
         state.transport    = Some(client.transport());
         state.playing      = Some(TransportState::Stopped);
+        state.midi_in      = Some(client.register_port("midi-in", MidiIn)?);
         state.jack         = Some(jack);
 
-        let drums = state.add_track(Some("Drums"))?;
+        state.add_track(Some("Drums"), Some(Box::new(move|client, track|{
-        drums.add_device(Sampler::new("Sampler", Some(BTreeMap::from([
+            track.add_device(Sampler::new("Sampler", Some(BTreeMap::from([
                 sample!(36, "Kick",  "/home/user/Lab/Music/pak/kik.wav"),
                 sample!(40, "Snare", "/home/user/Lab/Music/pak/sna.wav"),
                 sample!(44, "Hihat", "/home/user/Lab/Music/pak/chh.wav"),
             ])))?);
-        drums.add_device(Plugin::lv2(
+            track.add_device(Plugin::lv2(
                 "Panagement",
                 "file:///home/user/.lv2/Auburn Sounds Panagement 2.lv2"
             )?);
-
+            client.connect_ports(&track.midi_out, &track.devices[0].midi_ins()?[0])?;
-        drums.add_phrase("4 kicks", ppq * 4, Some(phrase! {
+            track.sequence = Some(1); // FIXME
+            track.add_phrase("4 kicks", ppq * 4, Some(phrase! {
                 00 * ppq/4 => MidiMessage::NoteOn { key: 36.into(), vel: 100.into() },
                 04 * ppq/4 => MidiMessage::NoteOn { key: 36.into(), vel: 100.into() },
                 08 * ppq/4 => MidiMessage::NoteOn { key: 36.into(), vel: 100.into() },
                 12 * ppq/4 => MidiMessage::NoteOn { key: 36.into(), vel: 100.into() },
             }));
-        drums.add_phrase("D-Beat", ppq * 4, Some(phrase! {
+            track.add_phrase("D-Beat", ppq * 4, Some(phrase! {
                 00 * ppq/4 => MidiMessage::NoteOn { key: 36.into(), vel: 100.into() },
                 04 * ppq/4 => MidiMessage::NoteOn { key: 40.into(), vel: 100.into() },
                 08 * ppq/4 => MidiMessage::NoteOn { key: 36.into(), vel: 100.into() },
                 10 * ppq/4 => MidiMessage::NoteOn { key: 36.into(), vel: 100.into() },
                 12 * ppq/4 => MidiMessage::NoteOn { key: 40.into(), vel: 100.into() },
             }));
-        drums.add_phrase("Garage", ppq * 4, Some(phrase! {
+            track.add_phrase("Garage", ppq * 4, Some(phrase! {
                 00 * ppq/4 => MidiMessage::NoteOn { key: 36.into(), vel: 100.into() },
                 04 * ppq/4 => MidiMessage::NoteOn { key: 40.into(), vel: 100.into() },
                 11 * ppq/4 => MidiMessage::NoteOn { key: 36.into(), vel: 100.into() },
                 12 * ppq/4 => MidiMessage::NoteOn { key: 40.into(), vel: 100.into() },
             }));
+            Ok(())
+        })))?;
 
-        // FIXME:
+        state.add_track(Some("Bass"), Some(Box::new(move|client, track|{
-        drums.sequence = Some(1);
+            track.add_device(Plugin::lv2("Odin2", "file:///home/user/.lv2/Odin2.lv2")?);
-
+            //client.connect_ports(&track.midi_out, &track.devices[0].midi_ins()?[0])?;
-        let bass = state.add_track(Some("Bass"))?;
+            track.sequence = Some(0); // FIXME
-        bass.add_device(Plugin::lv2("Odin2", "file:///home/user/.lv2/Odin2.lv2")?);
+            track.add_phrase("Offbeat", ppq * 4, Some(phrase! {
-        bass.add_phrase("Offbeat", ppq * 4, Some(phrase! {
                 00 * ppq/4 => MidiMessage::NoteOff { key: 40.into(), vel: 100.into() },
                 02 * ppq/4 => MidiMessage::NoteOn  { key: 40.into(), vel: 100.into() },
                 04 * ppq/4 => MidiMessage::NoteOff { key: 40.into(), vel: 100.into() },
@@ -91,9 +93,8 @@ pub fn main () -> Usually<()> {
                 12 * ppq/4 => MidiMessage::NoteOff { key: 40.into(), vel: 100.into() },
                 14 * ppq/4 => MidiMessage::NoteOn  { key: 40.into(), vel: 100.into() },
             }));
-
+            Ok(())
-        // FIXME:
+        })))?;
-        bass.sequence  = Some(0);
 
         Ok(())
     }))
@@ -174,6 +175,14 @@ process!(App |self, _client, scope| {
     Control::Continue
 });
 impl App {
+    pub fn client (&self) -> &Client {
+        self.jack.as_ref().unwrap().as_client()
+    }
+    pub fn connect_ports <A: ::_jack::PortSpec, B: ::_jack::PortSpec> (
+        &self, a: &Port<A>, b: &Port<B>
+    ) -> Usually<()> {
+        Ok(self.client().connect_ports(a, b)?)
+    }
     pub fn toggle_play (&mut self) -> Usually<()> {
         self.playing = match self.playing.expect("after jack init") {
             TransportState::Stopped => {
@@ -194,9 +203,17 @@ impl App {
         self.scene_cursor = self.scenes.len();
         Ok(&mut self.scenes[self.scene_cursor - 1])
     }
-    pub fn add_track (&mut self, name: Option<&str>) -> Usually<&mut Track> {
+    pub fn add_track (
+        &mut self,
+        name: Option<&str>,
+        init: Option<Box<dyn FnOnce(&Client, &mut Track)->Usually<()>>>,
+    ) -> Usually<&mut Track> {
         let name = name.ok_or_else(||format!("Track {}", self.tracks.len() + 1))?;
-        self.tracks.push(Track::new(&name, self.jack.as_ref().unwrap().as_client(), None, None)?);
+        let mut track = Track::new(&name, self.client(), None, None)?;
+        if let Some(init) = init {
+            init(self.client(), &mut track)?;
+        }
+        self.tracks.push(track);
         self.track_cursor = self.tracks.len();
         Ok(&mut self.tracks[self.track_cursor - 1])
     }