impl PortList for Sampler

src/device/sampler.rs

@@ -11,6 +11,20 @@ pub struct Sampler {
     samples:         Arc<Mutex<Vec<Sample>>>,
     selected_sample: usize,
     selected_column: usize,
+    midi_ins:        Vec<Port<MidiIn>>,
+    audio_ins:       Vec<Port<AudioIn>>,
+    audio_outs:      Vec<Port<AudioOut>>,
+}
+
+pub struct Sample {
+    port:     Port<AudioOut>,
+    name:     String,
+    rate:     u32,
+    gain:     f64,
+    channels: u8,
+    data:     Vec<Vec<f32>>,
+    trigger:  (u8, u8),
+    playing:  Option<usize>,
 }
 
 impl Sampler {
@@ -22,23 +36,21 @@ impl Sampler {
         ];
         let samples = Arc::new(Mutex::new(samples));
         let input = client.register_port("trigger", ::jack::MidiIn::default())?;
-        Ok(DynamicDevice::new(render, handle, process, Self {
+        Ok(DynamicDevice::new(render, handle, Self::process, Self {
             name: name.into(),
             input,
             selected_sample: 0,
             selected_column: 0,
             samples,
+            midi_ins:   vec![],
+            audio_ins:  vec![],
+            audio_outs: vec![],
         }))
     }
-}
 
-pub fn process (
-    state:  &mut Sampler,
-    _: &Client,
-    scope:  &ProcessScope,
-) -> Control {
-    let mut samples = state.samples.lock().unwrap();
-    for event in state.input.iter(scope) {
+    pub fn process (&mut self, _: &Client, scope:  &ProcessScope) -> Control {
+        let mut samples = self.samples.lock().unwrap();
+        for event in self.input.iter(scope) {
             let len = 3.min(event.bytes.len());
             let mut data = [0; 3];
             data[..len].copy_from_slice(&event.bytes[..len]);
@@ -66,17 +78,33 @@ pub fn process (
             }
         }
         Control::Continue
+    }
+
+    fn load_sample (&mut self, path: &str) {}
 }
 
-pub struct Sample {
-    port:     Port<AudioOut>,
-    name:     String,
-    rate:     u32,
-    gain:     f64,
-    channels: u8,
-    data:     Vec<Vec<f32>>,
-    trigger:  (u8, u8),
-    playing:  Option<usize>,
+impl PortList for Sampler {
+    fn audio_ins (&self) -> Usually<Vec<String>> {
+        let mut ports = vec![];
+        for port in self.audio_ins.iter() {
+            ports.push(port.name()?);
+        }
+        Ok(ports)
+    }
+    fn audio_outs (&self) -> Usually<Vec<String>> {
+        let mut ports = vec![];
+        for port in self.audio_outs.iter() {
+            ports.push(port.name()?);
+        }
+        Ok(ports)
+    }
+    fn midi_ins (&self) -> Usually<Vec<String>> {
+        let mut ports = vec![];
+        for port in self.midi_ins.iter() {
+            ports.push(port.name()?);
+        }
+        Ok(ports)
+    }
 }
 
 impl Sample {