Implement device enumeration for WASAPI driver backend

Cargo.toml

@@ -15,6 +15,24 @@ cfg_aliases = "0.2.1"
 [target.'cfg(any(target_os = "linux", target_os = "dragonfly", target_os = "freebsd", target_os = "netbsd"))'.dependencies]
 alsa = "0.9.0"
 
+[target.'cfg(target_os = "windows")'.dependencies]
+windows = { version = "0.58.0", features = [
+    "Win32_Media_Audio",
+    "Win32_Foundation",
+    "Win32_Devices_Properties",
+    "Win32_Media_KernelStreaming",
+    "Win32_System_Com_StructuredStorage",
+    "Win32_System_Threading",
+    "Win32_Security",
+    "Win32_System_SystemServices",
+    "Win32_System_Variant",
+    "Win32_Media_Multimedia",
+    "Win32_UI_Shell_PropertiesSystem"
+]}
+
 [[example]]
 name = "enumerate_alsa"
 path = "examples/enumerate_alsa.rs"
+
+
+

build.rs

@@ -4,6 +4,7 @@ fn main() {
     // Setup cfg aliases
     cfg_aliases! {
         os_alsa: { any(target_os = "linux", target_os = "dragonfly", target_os = "freebsd",
-            target_os = "netbsd") }
+            target_os = "netbsd") },
+        os_wasapi: { target_os = "windows" }
     }
 }

examples/enumerate.rs

@@ -8,15 +8,15 @@ pub fn enumerate_devices<Driver: AudioDriver>(driver: Driver) -> Result<(), Box<
     for device_type in [DeviceType::Input, DeviceType::Output, DeviceType::Duplex] {
         eprint!("\t{device_type:?}:\t");
         if let Some(device) = driver.default_device(device_type)? {
-            eprintln!("{}", device.name());
+            eprintln!("{}", device.name().unwrap());
         } else {
             eprintln!("None");
         }
     }
 
     eprintln!("All devices");
     for device in driver.list_devices()? {
-        eprintln!("\t{} ({:?})", device.name(), device.device_type());
+        eprintln!("\t{} ({:?})", device.name().unwrap(), device.device_type());
     }
     Ok(())
 }

examples/enumerate_alsa.rs

@@ -1,3 +1,4 @@
+#![cfg(os_alsa)]
 use std::error::Error;
 use interflow::{AudioDevice, AudioDriver};
 use interflow::backends::alsa::AlsaDriver;

src/backends/alsa.rs

@@ -62,8 +62,8 @@ impl fmt::Debug for AlsaDevice {
 impl AudioDevice for AlsaDevice {
     type Error = Infallible;
 
-    fn name(&self) -> Cow<str> {
-        Cow::Borrowed(self.name.as_str())
+    fn name(&self) -> Option<Cow<str>> {
+        Some(Cow::Borrowed(self.name.as_str()))
     }
 
     fn device_type(&self) -> DeviceType {
@@ -146,15 +146,15 @@ mod tests {
         for device_type in [DeviceType::Input, DeviceType::Output, DeviceType::Duplex] {
             eprint!("\t{device_type:?}:\t");
             if let Some(device) = driver.default_device(device_type).unwrap() {
-                eprintln!("{}", device.name());
+                eprintln!("{}", device.name().unwrap());
             } else {
                 eprintln!("None");
             }
         }
 
         eprintln!("All devices   :");
         for device in driver.list_devices().unwrap() {
-            eprintln!("\t{} ({:?})", device.name(), device.device_type());
+            eprintln!("\t{} ({:?})", device.name().unwrap(), device.device_type());
         }
     }
 }

src/backends/mod.rs

@@ -1,2 +1,5 @@
 #[cfg(os_alsa)]
 pub mod alsa;
+
+#[cfg(target_os = "windows")]
+pub mod wasapi;