From 8f32899afdd3caba697f0d3f5e6aa3be4762072d Mon Sep 17 00:00:00 2001
From: jdpurcell <jdpurcell@gmail.com>
Date: Thu, 19 Feb 2015 06:00:07 +0000
Subject: [PATCH] OpenAL sound device configuration.

---
 BizHawk.Client.EmuHawk/Sound/Output/OpenALSoundOutput.cs | 9 ++++++++-
 BizHawk.Client.EmuHawk/config/SoundConfig.cs             | 5 ++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/BizHawk.Client.EmuHawk/Sound/Output/OpenALSoundOutput.cs b/BizHawk.Client.EmuHawk/Sound/Output/OpenALSoundOutput.cs
index 588c59da1d..283123398c 100644
--- a/BizHawk.Client.EmuHawk/Sound/Output/OpenALSoundOutput.cs
+++ b/BizHawk.Client.EmuHawk/Sound/Output/OpenALSoundOutput.cs
@@ -22,7 +22,8 @@ namespace BizHawk.Client.EmuHawk
 		public OpenALSoundOutput(Sound sound)
 		{
 			_sound = sound;
-			_context = new AudioContext();
+			string deviceName = GetDeviceNames().FirstOrDefault(n => n == Global.Config.SoundDevice);
+			_context = new AudioContext(deviceName, Sound.SampleRate);
 		}
 
 		public void Dispose()
@@ -35,6 +36,12 @@ namespace BizHawk.Client.EmuHawk
 			_disposed = true;
 		}
 
+		public static IEnumerable<string> GetDeviceNames()
+		{
+			if (!Alc.IsExtensionPresent(IntPtr.Zero, "ALC_ENUMERATION_EXT")) return Enumerable.Empty<string>();
+			return Alc.GetString(IntPtr.Zero, AlcGetStringList.AllDevicesSpecifier);
+		}
+
 		private int BufferSizeSamples { get; set; }
 
 		public int MaxSamplesDeficit { get; private set; }
diff --git a/BizHawk.Client.EmuHawk/config/SoundConfig.cs b/BizHawk.Client.EmuHawk/config/SoundConfig.cs
index 803d9c5ca1..1e3180377e 100644
--- a/BizHawk.Client.EmuHawk/config/SoundConfig.cs
+++ b/BizHawk.Client.EmuHawk/config/SoundConfig.cs
@@ -45,6 +45,7 @@ namespace BizHawk.Client.EmuHawk
 				return;
 			}
 			var oldOutputMethod = Global.Config.SoundOutputMethod;
+			var oldDevice = Global.Config.SoundDevice;
 			Global.Config.SoundEnabled = SoundOnCheckBox.Checked;
 			Global.Config.MuteFrameAdvance = MuteFrameAdvance.Checked;
 			if (rbOutputMethodDirectSound.Checked) Global.Config.SoundOutputMethod = Config.ESoundOutputMethod.DirectSound;
@@ -54,7 +55,8 @@ namespace BizHawk.Client.EmuHawk
 			Global.Config.SoundVolume = SoundVolBar.Value;
 			Global.Config.SoundDevice = (string)listBoxSoundDevices.SelectedItem ?? "<default>";
 			GlobalWin.Sound.StopSound();
-			if (Global.Config.SoundOutputMethod != oldOutputMethod)
+			if (Global.Config.SoundOutputMethod != oldOutputMethod ||
+				Global.Config.SoundDevice != oldDevice)
 			{
 				GlobalWin.Sound.Dispose();
 				GlobalWin.Sound = new Sound(GlobalWin.MainForm.Handle);
@@ -77,6 +79,7 @@ namespace BizHawk.Client.EmuHawk
 			if (rbOutputMethodDirectSound.Checked) deviceNames = DirectSoundSoundOutput.GetDeviceNames();
 			if (rbOutputMethodXAudio2.Checked) deviceNames = XAudio2SoundOutput.GetDeviceNames();
 #endif
+			if (rbOutputMethodOpenAL.Checked) deviceNames = OpenALSoundOutput.GetDeviceNames();
 			listBoxSoundDevices.Items.Clear();
 			listBoxSoundDevices.Items.Add("<default>");
 			listBoxSoundDevices.SelectedIndex = 0;