1 files changed, 27 insertions, 0 deletions
diff --git a/third_party/rust/midir/src/os/unix.rs b/third_party/rust/midir/src/os/unix.rs
new file mode 100644
index 0000000000..88dcfee1d9
--- /dev/null
+++ b/third_party/rust/midir/src/os/unix.rs
@@ -0,0 +1,27 @@
+use ::ConnectError;
+use ::{MidiInputConnection, MidiOutputConnection};
+
+// TODO: maybe move to module `virtual` instead of `os::unix`?
+
+/// Trait that is implemented by `MidiInput` on platforms that
+/// support virtual ports (currently every platform but Windows).
+pub trait VirtualInput<T: Send> where Self: Sized {
+    /// Creates a virtual input port. Once it has been created,
+    /// other applications can connect to this port and send MIDI
+    /// messages which will be received by this port.
+    fn create_virtual<F>(
+        self, port_name: &str, callback: F, data: T
+    ) -> Result<MidiInputConnection<T>, ConnectError<Self>>
+    where F: FnMut(u64, &[u8], &mut T) + Send + 'static;
+}
+
+/// Trait that is implemented by `MidiOutput` on platforms that
+/// support virtual ports (currently every platform but Windows).
+pub trait VirtualOutput where Self: Sized {
+    /// Creates a virtual output port. Once it has been created,
+    /// other applications can connect to this port and will
+    /// receive MIDI messages that are sent to this port.
+    fn create_virtual(
+        self, port_name: &str
+    ) -> Result<MidiOutputConnection, ConnectError<Self>>;
+}
+\ No newline at end of file