Improve performance of blocking

src/streamer.rs

@@ -41,6 +41,7 @@ impl StreamerBackend {
             .map(move |_| {
                 let mut buffer = [0_i16; BUFFER_SIZE];
                     renderer.on_start_of_batch();
+                    tokio::task::block_in_place(|| {
                         buffer.fill_with(|| {
                             let sample = renderer
                                 .next_sample()
@@ -55,6 +56,7 @@ impl StreamerBackend {
                             };
                             sample
                         });
+                    });
                     Box::new(buffer)
                 });