choose backend

src/os/windows/mod.rs

@@ -1,12 +1,30 @@
-pub enum Backend {
+use std::sync::Mutex;
+
+#[derive(Clone)]
+pub enum BackEnd {
     Wasapi,
     Asio,
 }
 
-// TODO This needs to be set once at run time
+//static BACKEND: BackEnd = BackEnd::Asio;
-// by the cpal user
-static backend: Backend = Backend::Asio;
 
-pub fn which_backend() -> &'static Backend {
+lazy_static! {
-    &backend
+    static ref BACK_END: Mutex<BackEnd> = Mutex::new(BackEnd::Wasapi);
 }
+
+pub fn which_backend() -> BackEnd {
+    (*BACK_END.lock().unwrap()).clone()
+}
+
+pub fn use_asio_backend() -> Result<(), BackEndError> {
+    *BACK_END.lock().unwrap() = BackEnd::Asio;
+    Ok(())
+}
+
+pub fn use_wasapi_backend() -> Result<(), BackEndError> {
+    *BACK_END.lock().unwrap() = BackEnd::Wasapi;
+    Ok(())
+}
+
+#[derive(Debug)]
+pub struct BackEndError;

src/platform/windows/asio/device.rs

@@ -127,16 +127,8 @@ impl Iterator for Devices {
 // Asio doesn't have a concept of default
 // so returning first in list as default
 pub fn default_input_device() -> Option<Device> {
-    let driver_list = sys::get_driver_list();
+    let mut driver_list = sys::get_driver_list();
-    // Remove
+    match driver_list.pop() {
-    let d_name = driver_list.into_iter()
-        .filter(|d| d == "ASIO4ALL v2")
-        //.filter(|d| d.name() == "Dante Via (x64)")
-        //.filter(|d| d.name() == "Dante Virtual Soundcard (x64)")
-        .next();
-    //match driver_list.pop() {
-    match d_name {
-    // end remove
         Some(name) => {
             sys::Drivers::load(&name)
                 .or_else(|e| {
@@ -151,16 +143,8 @@ pub fn default_input_device() -> Option<Device> {
 }
 
 pub fn default_output_device() -> Option<Device> {
-    let driver_list = sys::get_driver_list();
+    let mut driver_list = sys::get_driver_list();
-    // Remove
+    match driver_list.pop() {
-    let d_name = driver_list.into_iter()
-        .filter(|d| d == "ASIO4ALL v2")
-        //.filter(|d| d.name() == "Dante Via (x64)")
-        //.filter(|d| d.name() == "Dante Virtual Soundcard (x64)")
-        .next();
-    //match driver_list.pop() {
-    match d_name {
-    // end remove
         Some(name) => {
             sys::Drivers::load(&name)
                 .or_else(|e| {