multi channels

asio-sys/asio-link/helpers.cpp

@@ -1,4 +1,5 @@
 #include "helpers.hpp"
+#include <stdio.h>
 
 extern "C" ASIOError get_sample_rate(double * rate){
 	return ASIOGetSampleRate(reinterpret_cast<ASIOSampleRate *>(rate));

asio-sys/src/lib.rs

@@ -71,7 +71,6 @@ enum AsioState {
     Running,
 }
 
-
 pub struct AsioStreams {
     pub input: Option<AsioStream>,
     pub output: Option<AsioStream>,
@@ -282,14 +281,15 @@ impl Drivers {
     }
 
     pub fn prepare_input_stream(&self, output: Option<AsioStream>, num_channels: usize) -> Result<AsioStreams, AsioDriverError> {
-        let buffer_infos = vec![
+        let buffer_infos = (0..num_channels)
+            .map(|i| {
                 AsioBufferInfo {
                     is_input: 1,
-                channel_num: 0,
+                    channel_num: i as c_long,
                     buffers: [std::ptr::null_mut(); 2],
-            };
+                }
-            num_channels
+            })
-        ];
+            .collect();
         
         let streams = AsioStreams{input: Some(AsioStream{buffer_infos, buffer_size: 0}), output};
         self.create_streams(streams)
@@ -298,14 +298,15 @@ impl Drivers {
     /// Creates the output stream
     pub fn prepare_output_stream(&self, input: Option<AsioStream>, num_channels: usize) -> Result<AsioStreams, AsioDriverError> {
         // Initialize data for FFI
-        let buffer_infos = vec![
+        let buffer_infos = (0..num_channels)
+            .map(|i| {
                 AsioBufferInfo {
                     is_input: 0,
-                channel_num: 0,
+                    channel_num: i as c_long,
                     buffers: [std::ptr::null_mut(); 2],
-            };
+                }
-            num_channels
+            })
-        ];
+            .collect();
         let streams = AsioStreams{output: Some(AsioStream{buffer_infos, buffer_size: 0}), input};
         self.create_streams(streams)
     }
@@ -397,10 +398,13 @@ impl Drivers {
                 &mut grans,
             ).expect("Failed getting buffers");
             if pref_b_size > 0 {
+                /*
                 let mut buffer_info_convert: Vec<ai::ASIOBufferInfo> = buffer_infos
                     .into_iter()
                     .map(|bi| mem::transmute::<AsioBufferInfo, ai::ASIOBufferInfo>(bi))
                     .collect();
+                    */
+                let mut buffer_info_convert = mem::transmute::<Vec<AsioBufferInfo>, Vec<ai::ASIOBufferInfo>>(buffer_infos);
                 let mut callbacks_convert =
                     mem::transmute::<AsioCallbacks, ai::ASIOCallbacks>(callbacks);
                 drivers.asio_create_buffers(
@@ -409,10 +413,7 @@ impl Drivers {
                     pref_b_size,
                     &mut callbacks_convert,
                 ).map(|_|{
-                    let buffer_infos: Vec<AsioBufferInfo> = buffer_info_convert
+                    let buffer_infos = mem::transmute::<Vec<ai::ASIOBufferInfo>, Vec<AsioBufferInfo>>(buffer_info_convert);
-                        .into_iter()
-                        .map(|bi| mem::transmute::<ai::ASIOBufferInfo, AsioBufferInfo>(bi))
-                        .collect();
                     for d in &buffer_infos {
                         println!("after {:?}", d);
                     }

src/platform/windows/asio/stream.rs

@@ -75,7 +75,14 @@ impl EventLoop {
     /// Create a new CPAL Input Stream
     /// If there is no ASIO Input Stream 
     /// it will be created
-    fn get_input_stream(&self, drivers: &sys::Drivers, num_channels: usize, sample_rate: u32) -> Result<usize, CreationError> {
+    fn get_input_stream(&self, drivers: &sys::Drivers, format: &Format) -> Result<usize, CreationError> {
+        let Format {
+            channels,
+            sample_rate,
+            ..
+        } = format;
+        let num_channels = *channels as usize;
+        let sample_rate = sample_rate.0;
             let ref mut streams = *self.asio_streams.lock().unwrap();
             if sample_rate != drivers.get_sample_rate().rate {
                 if drivers.can_sample_rate(sample_rate) {
@@ -105,7 +112,14 @@ impl EventLoop {
             }
     }
     
-    fn get_output_stream(&self, drivers: &sys::Drivers, num_channels: usize, sample_rate: u32) -> Result<usize, CreationError> {
+    fn get_output_stream(&self, drivers: &sys::Drivers, format: &Format) -> Result<usize, CreationError> {
+        let Format {
+            channels,
+            sample_rate,
+            ..
+        } = format;
+        let num_channels = *channels as usize;
+        let sample_rate = sample_rate.0;
             let ref mut streams = *self.asio_streams.lock().unwrap();
             if sample_rate != drivers.get_sample_rate().rate {
                 if drivers.can_sample_rate(sample_rate) {
@@ -146,8 +160,7 @@ impl EventLoop {
             } = device;
         let num_channels = format.channels.clone();
         let stream_type = drivers.get_data_type().expect("Couldn't load data type");
-        let sample_rate = format.sample_rate.0;
+        self.get_input_stream(&drivers, format).map(|stream_buffer_size| {
-        self.get_input_stream(&drivers, num_channels as usize, sample_rate).map(|stream_buffer_size| {
             let cpal_num_samples = stream_buffer_size * num_channels as usize;
             let count = self.stream_count.load(Ordering::SeqCst);
             self.stream_count.store(count + 1, Ordering::SeqCst);
@@ -361,8 +374,7 @@ pub fn build_output_stream(
     } = device;
     let num_channels = format.channels.clone();
     let stream_type = drivers.get_data_type().expect("Couldn't load data type");
-    let sample_rate = format.sample_rate.0;
+    self.get_output_stream(&drivers, format).map(|stream_buffer_size| {
-    self.get_output_stream(&drivers, num_channels as usize, sample_rate).map(|stream_buffer_size| {
         let cpal_num_samples = stream_buffer_size * num_channels as usize;
         let count = self.stream_count.load(Ordering::SeqCst);
         self.stream_count.store(count + 1, Ordering::SeqCst);