-fn play_xm(raw_xm: &[u8]) {
- let freq = 48000u32;
- let mut xm = XMContext::new(&raw_xm, freq).unwrap();
+
+struct XmCallback {
+ xm: XMContext,
+}
+
+impl AudioCallback for XmCallback {
+ type Channel = f32;
+
+ fn callback(&mut self, out: &mut [f32]) {
+ self.xm.generate_samples(out);
+ }
+}
+
+struct SoundPlayer {
+ _device: AudioDevice<XmCallback>,
+}
+
+fn play_xm(raw_xm: &[u8]) -> SoundPlayer {
+ let sdl_context = sdl2::init().unwrap();
+ let sdl_audio = sdl_context.audio().unwrap();
+
+ let sample_rate = 48000u32;
+ let desired_spec = AudioSpecDesired {
+ freq: Some(sample_rate as i32),
+ channels: Some(2u8),
+ samples: None,
+ };
+ let device = sdl_audio.open_playback(None, &desired_spec, |actual_spec| {
+ let xm = XMContext::new(&raw_xm, actual_spec.freq as u32).unwrap();
+
+ XmCallback {
+ xm: xm,
+ }
+ }).unwrap();
+
+ device.resume();
+
+ SoundPlayer {
+ _device: device,
+ }