From a7d3779dfafbc7b5011ea7d1b252d94daed969f6 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Thu, 6 Oct 2011 01:16:07 -0700
Subject: [PATCH] Check for the HRTF object instead of a flag

---
 Alc/ALc.c                 | 9 +++------
 Alc/ALu.c                 | 8 ++++----
 OpenAL32/Include/alMain.h | 6 ++----
 3 files changed, 9 insertions(+), 14 deletions(-)

diff --git a/Alc/ALc.c b/Alc/ALc.c
index 54821256..b548e6bf 100644
--- a/Alc/ALc.c
+++ b/Alc/ALc.c
@@ -1155,14 +1155,11 @@ static ALCboolean UpdateDeviceParams(ALCdevice *device, const ALCint *attrList)
     }
 
     device->Hrtf = NULL;
-    device->Flags &= ~DEVICE_USE_HRTF;
     if(!device->IsLoopbackDevice && GetConfigValueBool(NULL, "hrtf", AL_FALSE))
-        device->Flags |= DEVICE_USE_HRTF;
-    if((device->Flags&DEVICE_USE_HRTF) && !(device->Hrtf=GetHrtf(device)))
-        device->Flags &= ~DEVICE_USE_HRTF;
-    TRACE("HRTF %s\n", (device->Flags&DEVICE_USE_HRTF)?"enabled":"disabled");
+        device->Hrtf = GetHrtf(device);
+    TRACE("HRTF %s\n", device->Hrtf?"enabled":"disabled");
 
-    if(!(device->Flags&DEVICE_USE_HRTF) && device->Bs2bLevel > 0 && device->Bs2bLevel <= 6)
+    if(!device->Hrtf && device->Bs2bLevel > 0 && device->Bs2bLevel <= 6)
     {
         if(!device->Bs2b)
         {
diff --git a/Alc/ALu.c b/Alc/ALu.c
index cb0eca6e..5dc2bc26 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -178,7 +178,7 @@ ALvoid CalcNonAttnSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
         }
         BufferListItem = BufferListItem->next;
     }
-    if(ALSource->VirtualChannels && (Device->Flags&DEVICE_USE_HRTF))
+    if(ALSource->VirtualChannels && Device->Hrtf)
         ALSource->Params.DoMix = SelectHrtfMixer((ALSource->Params.Step==FRACTIONONE) ?
                                                  POINT_RESAMPLER : Resampler);
     else
@@ -268,7 +268,7 @@ ALvoid CalcNonAttnSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
         for(c = 0;c < num_channels;c++)
             SrcMatrix[c][chans[c]] += DryGain * ListenerGain;
     }
-    else if((Device->Flags&DEVICE_USE_HRTF))
+    else if(Device->Hrtf)
     {
         for(c = 0;c < num_channels;c++)
         {
@@ -689,14 +689,14 @@ ALvoid CalcSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
         }
         BufferListItem = BufferListItem->next;
     }
-    if((Device->Flags&DEVICE_USE_HRTF))
+    if(Device->Hrtf)
         ALSource->Params.DoMix = SelectHrtfMixer((ALSource->Params.Step==FRACTIONONE) ?
                                                  POINT_RESAMPLER : Resampler);
     else
         ALSource->Params.DoMix = SelectMixer((ALSource->Params.Step==FRACTIONONE) ?
                                              POINT_RESAMPLER : Resampler);
 
-    if((Device->Flags&DEVICE_USE_HRTF))
+    if(Device->Hrtf)
     {
         // Use a binaural HRTF algorithm for stereo headphone playback
         ALfloat delta, ev = 0.0f, az = 0.0f;
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index 3c47d024..a6ef8bb3 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -692,12 +692,10 @@ struct ALCdevice_struct
 
 // Duplicate stereo sources on the side/rear channels
 #define DEVICE_DUPLICATE_STEREO                  (1<<0)
-// Use HRTF filters for mixing sounds
-#define DEVICE_USE_HRTF                          (1<<1)
 // Frequency was requested by the app or config file
-#define DEVICE_FREQUENCY_REQUEST                 (1<<2)
+#define DEVICE_FREQUENCY_REQUEST                 (1<<1)
 // Channel configuration was requested by the config file
-#define DEVICE_CHANNELS_REQUEST                  (1<<3)
+#define DEVICE_CHANNELS_REQUEST                  (1<<2)
 
 // Specifies if the device is currently running
 #define DEVICE_RUNNING                           (1<<31)
-- 
2.11.4.GIT