Disable HRTF by default when using OpenAL

Author: ACrazyTown

src/lime/_internal/backend/native/NativeAudioSource.hx

@@ -28,6 +28,7 @@ class NativeAudioSource
 
 	#if lime_openalsoft
 	private static var canQueryLatency:Null<Bool>;
+	private static var hasDirectChannelsExt:Null<Bool>;
 	#end
 
 	private var buffers:Array<ALBuffer>;
@@ -140,6 +141,20 @@ class NativeAudioSource
 			}
 		}
 
+		AL.sourcei(handle, 0, 0);
+
+		#if lime_openalsoft
+		if (hasDirectChannelsExt == null)
+		{
+			hasDirectChannelsExt = AL.isExtensionPresent("AL_SOFT_direct_channels") && AL.isExtensionPresent("AL_SOFT_direct_channels_remix");
+		}
+
+		if (hasDirectChannelsExt)
+		{
+			AL.sourcei(handle, AL.DIRECT_CHANNELS_SOFT, AL.REMIX_UNMATCHED_SOFT);
+		}
+		#end
+
 		samples = Std.int((dataLength * 8.0) / (parent.buffer.channels * parent.buffer.bitsPerSample));
 	}
 

src/lime/media/openal/AL.hx

@@ -233,13 +233,21 @@ class AL
 	public static inline var FILTER_LOWPASS:Int = 0x0001;
 	public static inline var FILTER_HIGHPASS:Int = 0x0002;
 	public static inline var FILTER_BANDPASS:Int = 0x0003;
+
+	#if lime_openalsoft
 	/* AL_SOFT_source_latency extension */
 	public static inline var SAMPLE_OFFSET_LATENCY_SOFT = 0x1200;
 	public static inline var SEC_OFFSET_LATENCY_SOFT = 0x1201;
 
-	#if lime_openalsoft
 	/* AL_SOFT_hold_on_disconnect extension */
 	public static inline var STOP_SOURCES_ON_DISCONNECT_SOFT:Int = 0x19AB;
+
+	/* AL_SOFT_direct_channels extension */
+	public static inline var DIRECT_CHANNELS_SOFT:Int = 0x1033;
+
+	/* AL_SOFT_direct_channels_remix extension */
+	public static inline var DROP_UNMATCHED_SOFT:Int = 0x0001;
+	public static inline var REMIX_UNMATCHED_SOFT:Int = 0x0002;
 	#end
 
 	public static function removeDirectFilter(source:ALSource)