wip: port: make device

crates/device/src/port/port_midi_in.rs

@@ -0,0 +1,109 @@
+use crate::*;
+
+//impl_port!(MidiInput: MidiOut -> MidiIn  |j, n|j.register_port::<MidiOut>(n));
+
+#[derive(Debug)] pub struct MidiInput {
+    /// Handle to JACK client, for receiving reconnect events.
+    jack: Jack<'static>,
+    /// Port name
+    name: Arc<str>,
+    /// Port handle.
+    port: Port<MidiIn>,
+    /// List of currently held notes.
+    held: Arc<RwLock<[bool;128]>>,
+    /// List of ports to connect to.
+    pub connections: Vec<Connect>,
+}
+has!(Jack<'static>: |self: MidiInput|self.jack);
+impl JackPort for MidiInput {
+    type Port = MidiIn;
+    type Pair = MidiOut;
+    fn name (&self) -> &Arc<str> {
+        &self.name
+    }
+    fn port (&self) -> &Port<Self::Port> {
+        &self.port
+    }
+    fn port_mut (&mut self) -> &mut Port<Self::Port> {
+        &mut self.port
+    }
+    fn into_port (self) -> Port<Self::Port> {
+        self.port
+    }
+    fn connections (&self) -> &[Connect] {
+        self.connections.as_slice()
+    }
+    fn new (jack: &Jack<'static>, name: &impl AsRef<str>, connect: &[Connect])
+        -> Usually<Self> where Self: Sized
+    {
+        let port = Self {
+            port: Self::register(jack, name)?,
+            jack: jack.clone(),
+            name: name.as_ref().into(),
+            connections: connect.to_vec(),
+            held: Arc::new(RwLock::new([false;128]))
+        };
+        port.connect_to_matching()?;
+        Ok(port)
+    }
+}
+impl MidiInput {
+    pub fn parsed <'a> (&'a self, scope: &'a ProcessScope) -> impl Iterator<Item=(usize, LiveEvent<'a>, &'a [u8])> {
+        parse_midi_input(self.port().iter(scope))
+    }
+}
+
+#[tengri_proc::command(MidiInput)]
+impl MidiInputCommand {
+    //fn _todo_ (_port: &mut MidiInput) -> Perhaps<Self> { Ok(None) }
+}
+
+impl<T: Has<Vec<MidiInput>>> HasMidiIns for T {
+    fn midi_ins (&self) -> &Vec<MidiInput> {
+        self.get()
+    }
+    fn midi_ins_mut (&mut self) -> &mut Vec<MidiInput> {
+        self.get_mut()
+    }
+}
+
+/// Trait for thing that may receive MIDI.
+pub trait HasMidiIns {
+    fn midi_ins (&self) -> &Vec<MidiInput>;
+    fn midi_ins_mut (&mut self) -> &mut Vec<MidiInput>;
+    /// Collect MIDI input from app ports (TODO preallocate large buffers)
+    fn midi_input_collect <'a> (&'a self, scope: &'a ProcessScope) -> CollectedMidiInput<'a> {
+        self.midi_ins().iter()
+            .map(|port|port.port().iter(scope)
+                .map(|RawMidi { time, bytes }|(time, LiveEvent::parse(bytes)))
+                .collect::<Vec<_>>())
+            .collect::<Vec<_>>()
+    }
+    fn midi_ins_with_sizes <'a> (&'a self) ->
+        impl Iterator<Item=(usize, &Arc<str>, &[Connect], usize, usize)> + Send + Sync + 'a
+    {
+        let mut y = 0;
+        self.midi_ins().iter().enumerate().map(move|(i, input)|{
+            let height = 1 + input.connections().len();
+            let data   = (i, input.name(), input.connections(), y, y + height);
+            y += height;
+            data
+        })
+    }
+}
+
+pub type CollectedMidiInput<'a> = Vec<Vec<(u32, Result<LiveEvent<'a>, MidiError>)>>;
+
+impl<T: HasMidiIns + HasJack<'static>> AddMidiIn for T {
+    fn midi_in_add (&mut self) -> Usually<()> {
+        let index = self.midi_ins().len();
+        let port  = MidiInput::new(self.jack(), &format!("M/{index}"), &[])?;
+        self.midi_ins_mut().push(port);
+        Ok(())
+    }
+}
+
+/// May create new MIDI input ports.
+pub trait AddMidiIn {
+    fn midi_in_add (&mut self) -> Usually<()>;
+}