Use a unique_ptr for Uhj2Encoder

Alc/alc.cpp

@@ -48,6 +48,7 @@
 #include "alError.h"
 #include "mastering.h"
 #include "bformatdec.h"
+#include "uhjfilter.h"
 #include "alu.h"
 #include "alconfig.h"
 #include "ringbuffer.h"
@@ -1987,7 +1988,6 @@ static ALCenum UpdateDeviceParams(ALCdevice *device, const ALCint *attrList)
     if((device->Flags&DEVICE_RUNNING))
         return ALC_NO_ERROR;
 
-    al_free(device->Uhj_Encoder);
     device->Uhj_Encoder = nullptr;
 
     al_free(device->Bs2b);
@@ -2428,9 +2428,6 @@ ALCdevice_struct::~ALCdevice_struct()
     al_free(Bs2b);
     Bs2b = nullptr;
 
-    al_free(Uhj_Encoder);
-    Uhj_Encoder = nullptr;
-
     bformatdec_free(&AmbiDecoder);
     ambiup_free(&AmbiUp);
 

Alc/alu.cpp

@@ -162,7 +162,7 @@ void ProcessUhj(ALCdevice *device, ALsizei SamplesToDo)
     assert(lidx != -1 && ridx != -1);
 
     /* Encode to stereo-compatible 2-channel UHJ output. */
-    EncodeUhj2(device->Uhj_Encoder,
+    EncodeUhj2(device->Uhj_Encoder.get(),
         device->RealOut.Buffer[lidx], device->RealOut.Buffer[ridx],
         device->Dry.Buffer, SamplesToDo
     );

Alc/panning.cpp

@@ -1199,7 +1199,7 @@ no_hrtf:
     }
     if(device->Render_Mode == NormalRender)
     {
-        device->Uhj_Encoder = reinterpret_cast<Uhj2Encoder*>(al_calloc(16, sizeof(Uhj2Encoder)));
+        device->Uhj_Encoder.reset(new Uhj2Encoder{});
         TRACE("UHJ enabled\n");
         InitUhjPanning(device);
         return;

Alc/uhjfilter.h

@@ -4,14 +4,12 @@
 #include "AL/al.h"
 
 #include "alMain.h"
+#include "almalloc.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
 
-typedef struct AllPassState {
-    ALfloat z[2];
-} AllPassState;
+struct AllPassState {
+    ALfloat z[2]{0.0f, 0.0f};
+};
 
 /* Encoding 2-channel UHJ from B-Format is done as:
  *
@@ -38,20 +36,18 @@ typedef struct AllPassState {
  * other inputs.
  */
 
-typedef struct Uhj2Encoder {
+struct Uhj2Encoder {
     AllPassState Filter1_Y[4];
     AllPassState Filter2_WX[4];
     AllPassState Filter1_WX[4];
-    ALfloat LastY, LastWX;
-} Uhj2Encoder;
+    ALfloat LastY{0.0f}, LastWX{0.0f};
+
+    DEF_NEWDEL(Uhj2Encoder)
+};
 
 /* Encodes a 2-channel UHJ (stereo-compatible) signal from a B-Format input
  * signal. The input must use FuMa channel ordering and scaling.
  */
 void EncodeUhj2(Uhj2Encoder *enc, ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut, ALfloat (*RESTRICT InSamples)[BUFFERSIZE], ALsizei SamplesToDo);
 
-#ifdef __cplusplus
-} // extern "C"
-#endif
-
 #endif /* UHJFILTER_H */

OpenAL32/Include/alMain.h

@@ -207,6 +207,7 @@ struct ALbuffer;
 struct ALeffect;
 struct ALfilter;
 struct EffectState;
+struct Uhj2Encoder;
 
 
 #define DEFAULT_OUTPUT_RATE  (44100)
@@ -669,7 +670,7 @@ struct ALCdevice_struct {
     ALCenum HrtfStatus{ALC_FALSE};
 
     /* UHJ encoder state */
-    struct Uhj2Encoder *Uhj_Encoder{nullptr};
+    std::unique_ptr<Uhj2Encoder> Uhj_Encoder;
 
     /* High quality Ambisonic decoder */
     struct BFormatDec *AmbiDecoder{nullptr};