Clean up some unnecessary includes

alc/alc.cpp

@@ -877,6 +877,9 @@ ALeffect DefaultEffect;
  */
 bool SuspendDefers{true};
 
+/* Initial seed for dithering. */
+constexpr ALuint DitherRNGSeed{22222u};
+
 
 /************************************************
  * ALC information
@@ -1861,7 +1864,7 @@ static ALCenum UpdateDeviceParams(ALCdevice *device, const ALCint *attrList)
     device->FixedLatency = nanoseconds::zero();
 
     device->DitherDepth = 0.0f;
-    device->DitherSeed = DITHER_RNG_SEED;
+    device->DitherSeed = DitherRNGSeed;
 
     /*************************************************************************
      * Update device format request if HRTF is requested

alc/alu.h

@@ -2,39 +2,23 @@
 #define ALU_H
 
 #include <array>
-#include <atomic>
 #include <cmath>
 #include <cstddef>
 
 #include "AL/al.h"
-#include "AL/alc.h"
-#include "AL/alext.h"
 
-#include "al/buffer.h"
 #include "alcmain.h"
-#include "almalloc.h"
 #include "alspan.h"
-#include "ambidefs.h"
-#include "devformat.h"
-#include "filters/biquad.h"
-#include "filters/nfc.h"
-#include "filters/splitter.h"
-#include "hrtf.h"
 #include "logging.h"
 
 struct ALbufferlistitem;
 struct ALeffectslot;
 
-enum class DistanceModel;
-
 
 #define MAX_PITCH  255
 #define MAX_SENDS  16
 
 
-#define DITHER_RNG_SEED 22222
-
-
 using MixerFunc = void(*)(const al::span<const float> InSamples,
     const al::span<FloatBufferLine> OutBuffer, float *CurrentGains, const float *TargetGains,
     const size_t Counter, const size_t OutPos);

alc/voice.h

@@ -4,6 +4,7 @@
 #include "AL/al.h"
 #include "AL/alext.h"
 
+#include "al/buffer.h"
 #include "alspan.h"
 #include "alu.h"
 #include "filters/biquad.h"
@@ -11,6 +12,8 @@
 #include "filters/splitter.h"
 #include "hrtf.h"
 
+enum class DistanceModel;
+
 
 enum SpatializeMode {
     SpatializeOff = AL_FALSE,