define midi ins and audio outs in project

README.md

@@ -10,7 +10,7 @@ See `demos/project.edn` for the initial contents of the session.
 * Rust toolchain
 * JACK or Pipewire
 
-## Recommended
+### Recommended
 
 * MIDI controller
 * Samples at ~/Lab/Music/pak

demos/project.edn

@@ -1,5 +1,8 @@
 (bpm 150)
 
+(midi-in "nanoKEY Studio.*capture.*")
+(audio-out "Komplete.+:playback_FL", "Komplete.+:playback_FR")
+
 (scene { :name "Intro"  } _ 0 _ _)
 (scene { :name "Hook"   } 0 1 0 _)
 (scene { :name "Verse"  } 1 2 1 _)

src/edn.rs

@@ -59,6 +59,28 @@ impl App {
                     Some(Edn::Symbol("track")) => {
                         Track::load_edn(self, &items[1..])?;
                     },
+                    Some(Edn::Symbol("midi-in")) => {
+                        self.midi_ins = items[1..].iter().map(|x|match x {
+                            Edn::Str(n) => n.to_string(),
+                            _ => panic!("unexpected midi-in")
+                        }).collect::<Vec<_>>();
+                    },
+                    Some(Edn::Symbol("audio-out")) => {
+                        let client = self.client();
+                        self.audio_outs = items[1..].iter().map(|x|match x {
+                            Edn::Str(n) => n.to_string(),
+                            _ => panic!("unexpected midi-in")
+                        }).collect::<Vec<_>>()
+                            .iter()
+                            .map(|name|client
+                                .ports(Some(name), None, PortFlags::empty())
+                                .get(0)
+                                .map(|name|client.port_by_name(name)))
+                            .flatten()
+                            .filter_map(|x|x)
+                            .map(Arc::new)
+                            .collect();
+                    },
                     _ => panic!("unexpected edn: {:?}", items.get(0))
                 }
             },

src/main.rs

@@ -15,10 +15,7 @@ use crate::{core::*, model::*};
 
 /// Application entrypoint.
 pub fn main () -> Usually<()> {
-    let app = App::from_edn(include_str!("../demos/project.edn"))?
-        .with_midi_ins(&["nanoKEY Studio.*capture.*"])?
-        .with_audio_outs(&["Komplete.+:playback_FL", "Komplete.+:playback_FR"])?
-        .activate(Some(|app: &Arc<RwLock<App>>| {
+    run(App::from_edn(include_str!("../demos/project.edn"))?.activate(Some(|app: &Arc<RwLock<App>>| {
 
         let (midi_in, mut midi_outs) = {
             let app = app.read().unwrap();
@@ -52,7 +49,6 @@ pub fn main () -> Usually<()> {
 
         Ok(())
 
-        }))?;
-    run(app)?;
+    }))?)?;
     Ok(())
 }

src/model.rs

@@ -56,10 +56,10 @@ pub struct App {
     /// Paths to user directories
     xdg:               Option<Arc<XdgApp>>,
     /// Main audio outputs.
-    audio_outs:        Vec<Arc<Port<Unowned>>>,
+    pub audio_outs:    Vec<Arc<Port<Unowned>>>,
     /// Number of frames requested by process callback
     chunk_size:        usize,
-
+    /// Transport model and view.
     pub transport: TransportToolbar,
 }