Call ALfilterState_processC directly

It's the only implementation currently, so there's no point to having it stored
as a function pointer in the filter struct. Even if there were SIMD versions,
it'd be a global selection, not per-instance.

Alc/effects/equalizer.c

@@ -151,7 +151,6 @@ static ALvoid ALequalizerState_update(ALequalizerState *state, const ALCdevice *
         state->filter[0][i].b0 = state->filter[0][0].b0;
         state->filter[0][i].b1 = state->filter[0][0].b1;
         state->filter[0][i].b2 = state->filter[0][0].b2;
-        state->filter[0][i].process = state->filter[0][0].process;
     }
 
     gain = props->Equalizer.Mid1Gain;
@@ -168,7 +167,6 @@ static ALvoid ALequalizerState_update(ALequalizerState *state, const ALCdevice *
         state->filter[1][i].b0 = state->filter[1][0].b0;
         state->filter[1][i].b1 = state->filter[1][0].b1;
         state->filter[1][i].b2 = state->filter[1][0].b2;
-        state->filter[1][i].process = state->filter[1][0].process;
     }
 
     gain = props->Equalizer.Mid2Gain;
@@ -185,7 +183,6 @@ static ALvoid ALequalizerState_update(ALequalizerState *state, const ALCdevice *
         state->filter[2][i].b0 = state->filter[2][0].b0;
         state->filter[2][i].b1 = state->filter[2][0].b1;
         state->filter[2][i].b2 = state->filter[2][0].b2;
-        state->filter[2][i].process = state->filter[2][0].process;
     }
 
     gain = sqrtf(props->Equalizer.HighGain);
@@ -200,7 +197,6 @@ static ALvoid ALequalizerState_update(ALequalizerState *state, const ALCdevice *
         state->filter[3][i].b0 = state->filter[3][0].b0;
         state->filter[3][i].b1 = state->filter[3][0].b1;
         state->filter[3][i].b2 = state->filter[3][0].b2;
-        state->filter[3][i].process = state->filter[3][0].process;
     }
 }
 

Alc/effects/modulator.c

@@ -142,7 +142,6 @@ static ALvoid ALmodulatorState_update(ALmodulatorState *state, const ALCdevice *
         state->Filter[i].b0 = a;
         state->Filter[i].b1 = -a;
         state->Filter[i].b2 = 0.0f;
-        state->Filter[i].process = ALfilterState_processC;
     }
 
     STATIC_CAST(ALeffectState,state)->OutBuffer = Device->FOAOut.Buffer;

OpenAL32/Include/alFilter.h

@@ -44,10 +44,9 @@ typedef struct ALfilterState {
     ALfloat y[2]; /* History of two last output samples */
     ALfloat a1, a2; /* Transfer function coefficients "a" (a0 is pre-applied) */
     ALfloat b0, b1, b2; /* Transfer function coefficients "b" */
-
-    void (*process)(struct ALfilterState *self, ALfloat *restrict dst, const ALfloat *restrict src, ALuint numsamples);
 } ALfilterState;
-#define ALfilterState_process(a, ...) ((a)->process((a), __VA_ARGS__))
+/* Currently only a C-based filter process method is implemented. */
+#define ALfilterState_process ALfilterState_processC
 
 /* Calculates the rcpQ (i.e. 1/Q) coefficient for shelving filters, using the
  * reference gain and shelf slope parameter.

OpenAL32/alFilter.c

@@ -431,8 +431,6 @@ void ALfilterState_setParams(ALfilterState *filter, ALfilterType type, ALfloat g
     filter->b0 = b[0] / a[0];
     filter->b1 = b[1] / a[0];
     filter->b2 = b[2] / a[0];
-
-    filter->process = ALfilterState_processC;
 }