1 files changed, 50 insertions, 0 deletions
diff --git a/third_party/rust/audio-mixer/src/main.rs b/third_party/rust/audio-mixer/src/main.rs
new file mode 100644
index 0000000000..938867f5e8
--- /dev/null
+++ b/third_party/rust/audio-mixer/src/main.rs
@@ -0,0 +1,50 @@
+extern crate audio_mixer;
+use audio_mixer::{Channel, Mixer};
+
+fn main() {
+    // f32
+    let input_channels = [
+        Channel::FrontLeft,
+        Channel::Silence,
+        Channel::FrontRight,
+        Channel::FrontCenter,
+    ];
+    let output_channels = [Channel::FrontLeft, Channel::FrontRight];
+
+    let mut input_buffer = vec![0.0; input_channels.len()];
+    for (i, data) in input_buffer.iter_mut().enumerate() {
+        *data = (i + 1) as f32;
+    }
+    let mut output_buffer = vec![0.0; output_channels.len()];
+
+    let mixer = Mixer::new(&input_channels, &output_channels);
+
+    mixer.mix(input_buffer.as_slice(), output_buffer.as_mut_slice());
+    println!("{:?} is mixed to {:?}", input_buffer, output_buffer);
+
+    // i16
+    let input_channels = [
+        Channel::FrontLeft,
+        Channel::Silence,
+        Channel::FrontRight,
+        Channel::FrontCenter,
+        Channel::BackLeft,
+        Channel::SideRight,
+        Channel::LowFrequency,
+        Channel::SideLeft,
+        Channel::BackCenter,
+        Channel::BackRight,
+    ];
+    let output_channels = [Channel::Silence, Channel::FrontRight, Channel::FrontLeft];
+
+    let mut input_buffer = vec![0; input_channels.len()];
+    for (i, data) in input_buffer.iter_mut().enumerate() {
+        *data = (i + 0x7FFE) as i16;
+    }
+    let mut output_buffer = vec![0; output_channels.len()];
+
+    let mixer = Mixer::new(&input_channels, &output_channels);
+
+    mixer.mix(input_buffer.as_slice(), output_buffer.as_mut_slice());
+    println!("{:?} is mixed to {:?}", input_buffer, output_buffer);
+}