Add missing file :(

src/audio_backend/pipe.rs

@@ -0,0 +1,40 @@
+use super::{Open, Sink};
+use std::fs::OpenOptions;
+use std::io::{self, Write};
+use std::mem;
+use std::slice;
+
+pub struct StdoutSink(Box<Write>);
+
+impl Open for StdoutSink {
+    fn open(path: Option<&str>) -> StdoutSink {
+        if let Some(path) = path {
+            let file = OpenOptions::new().write(true).open(path).unwrap();
+            StdoutSink(Box::new(file))
+        } else {
+            StdoutSink(Box::new(io::stdout()))
+        }
+    }
+}
+
+impl Sink for StdoutSink {
+    fn start(&mut self) -> io::Result<()> {
+        Ok(())
+    }
+
+    fn stop(&mut self) -> io::Result<()> {
+        Ok(())
+    }
+
+    fn write(&mut self, data: &[i16]) -> io::Result<()> {
+        let data: &[u8] = unsafe {
+            slice::from_raw_parts(data.as_ptr() as *const u8, data.len() * mem::size_of::<i16>())
+        };
+
+        self.0.write_all(data)?;
+        self.0.flush()?;
+
+        Ok(())
+    }
+}
+