Rename a couple filter files for consistency

Alc/effects/autowah.cpp

@@ -30,7 +30,7 @@
 #include "alAuxEffectSlot.h"
 #include "alError.h"
 #include "alu.h"
-#include "filters/defs.h"
+#include "filters/biquad.h"
 #include "vecmat.h"
 
 #define MIN_FREQ 20.0f

Alc/effects/chorus.cpp

@@ -30,7 +30,7 @@
 #include "alAuxEffectSlot.h"
 #include "alError.h"
 #include "alu.h"
-#include "filters/defs.h"
+#include "filters/biquad.h"
 #include "vector.h"
 
 

Alc/effects/distortion.cpp

@@ -30,7 +30,7 @@
 #include "alAuxEffectSlot.h"
 #include "alError.h"
 #include "alu.h"
-#include "filters/defs.h"
+#include "filters/biquad.h"
 
 
 struct ALdistortionState final : public EffectState {

Alc/effects/echo.cpp

@@ -31,7 +31,7 @@
 #include "alAuxEffectSlot.h"
 #include "alError.h"
 #include "alu.h"
-#include "filters/defs.h"
+#include "filters/biquad.h"
 #include "vector.h"
 
 

Alc/effects/equalizer.cpp

@@ -31,7 +31,7 @@
 #include "alAuxEffectSlot.h"
 #include "alError.h"
 #include "alu.h"
-#include "filters/defs.h"
+#include "filters/biquad.h"
 #include "vecmat.h"
 
 

Alc/effects/modulator.cpp

@@ -31,7 +31,7 @@
 #include "alAuxEffectSlot.h"
 #include "alError.h"
 #include "alu.h"
-#include "filters/defs.h"
+#include "filters/biquad.h"
 #include "vecmat.h"
 
 

Alc/effects/reverb.cpp

@@ -33,7 +33,7 @@
 #include "alAuxEffectSlot.h"
 #include "alListener.h"
 #include "alError.h"
-#include "filters/defs.h"
+#include "filters/biquad.h"
 #include "vector.h"
 #include "vecmat.h"
 

Alc/filters/biquad.cpp

@@ -7,7 +7,7 @@
 #include "AL/al.h"
 
 #include "alMain.h"
-#include "defs.h"
+#include "biquad.h"
 
 
 void BiquadFilter::setParams(BiquadType type, float gain, float f0norm, float rcpQ)

Alc/filters/biquad.h

@@ -1,7 +1,8 @@
-#ifndef ALC_FILTER_H
-#define ALC_FILTER_H
+#ifndef FILTERS_BIQUAD_H
+#define FILTERS_BIQUAD_H
 
 #include <cmath>
+#include <utility>
 
 #include "AL/al.h"
 #include "math_defs.h"
@@ -122,4 +123,4 @@ inline ALfloat calc_rcpQ_from_bandwidth(float f0norm, float bandwidth)
     return 2.0f*std::sinh(std::log(2.0f)/2.0f*bandwidth*w0/std::sin(w0));
 }
 
-#endif /* ALC_FILTER_H */
+#endif /* FILTERS_BIQUAD_H */

CMakeLists.txt

@@ -752,8 +752,8 @@ SET(ALC_OBJS
     Alc/effects/null.cpp
     Alc/effects/pshifter.cpp
     Alc/effects/reverb.cpp
-    Alc/filters/defs.h
-    Alc/filters/filter.cpp
+    Alc/filters/biquad.h
+    Alc/filters/biquad.cpp
     Alc/filters/nfc.cpp
     Alc/filters/nfc.h
     Alc/filters/splitter.cpp

OpenAL32/Include/alu.h

@@ -18,7 +18,7 @@
 
 #include "hrtf.h"
 #include "math_defs.h"
-#include "filters/defs.h"
+#include "filters/biquad.h"
 #include "filters/nfc.h"
 #include "almalloc.h"