Constify some parameters

7 files changed, 103 insertions, 101 deletions

diff --git a/Alc/alu.cpp b/Alc/alu.cpp
index b3ca26cb..f7a8eb6b 100644
--- a/Alc/alu.cpp
+++ b/Alc/alu.cpp
@@ -126,7 +126,7 @@ inline HrtfDirectMixerFunc SelectHrtfMixer(void)
 }
 
 
-void ProcessHrtf(ALCdevice *device, ALsizei SamplesToDo)
+void ProcessHrtf(ALCdevice *device, const ALsizei SamplesToDo)
 {
     if(AmbiUpsampler *ambiup{device->AmbiUp.get()})
         ambiup->process(device->Dry.Buffer, device->Dry.NumChannels, device->FOAOut.Buffer,
@@ -144,7 +144,7 @@ void ProcessHrtf(ALCdevice *device, ALsizei SamplesToDo)
     state->Offset += SamplesToDo;
 }
 
-void ProcessAmbiDec(ALCdevice *device, ALsizei SamplesToDo)
+void ProcessAmbiDec(ALCdevice *device, const ALsizei SamplesToDo)
 {
     BFormatDec *ambidec{device->AmbiDecoder.get()};
     if(device->Dry.Buffer != device->FOAOut.Buffer)
@@ -154,13 +154,13 @@ void ProcessAmbiDec(ALCdevice *device, ALsizei SamplesToDo)
         SamplesToDo);
 }
 
-void ProcessAmbiUp(ALCdevice *device, ALsizei SamplesToDo)
+void ProcessAmbiUp(ALCdevice *device, const ALsizei SamplesToDo)
 {
     device->AmbiUp->process(device->RealOut.Buffer, device->RealOut.NumChannels,
         device->FOAOut.Buffer, device->FOAOut.NumChannels, SamplesToDo);
 }
 
-void ProcessUhj(ALCdevice *device, ALsizei SamplesToDo)
+void ProcessUhj(ALCdevice *device, const ALsizei SamplesToDo)
 {
     /* UHJ is stereo output only. */
     const int lidx{(device->RealOut.ChannelName[0]==FrontLeft) ? 0 : 1};
@@ -172,7 +172,7 @@ void ProcessUhj(ALCdevice *device, ALsizei SamplesToDo)
         device->Dry.Buffer, SamplesToDo);
 }
 
-void ProcessBs2b(ALCdevice *device, ALsizei SamplesToDo)
+void ProcessBs2b(ALCdevice *device, const ALsizei SamplesToDo)
 {
     /* BS2B is stereo output only. */
     const int lidx{(device->RealOut.ChannelName[0]==FrontLeft) ? 0 : 1};
diff --git a/Alc/mixer/defs.h b/Alc/mixer/defs.h
index bac93d6f..649e6d44 100644
--- a/Alc/mixer/defs.h
+++ b/Alc/mixer/defs.h
@@ -22,43 +22,41 @@ const ALfloat *Resample_bsinc_C(const InterpState *state, const ALfloat *RESTRIC
 
 /* C mixers */
 void MixHrtf_C(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
-               const ALfloat *data, ALsizei Offset, ALsizei OutPos,
+               const ALfloat *data, ALsizei Offset, const ALsizei OutPos,
                const ALsizei IrSize, MixHrtfParams *hrtfparams,
-               HrtfState *hrtfstate, ALsizei BufferSize);
+               HrtfState *hrtfstate, const ALsizei BufferSize);
 void MixHrtfBlend_C(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
-                    const ALfloat *data, ALsizei Offset, ALsizei OutPos,
+                    const ALfloat *data, ALsizei Offset, const ALsizei OutPos,
                     const ALsizei IrSize, const HrtfParams *oldparams,
                     MixHrtfParams *newparams, HrtfState *hrtfstate,
-                    ALsizei BufferSize);
+                    const ALsizei BufferSize);
 void MixDirectHrtf_C(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
                      const ALfloat (*data)[BUFFERSIZE], DirectHrtfState *State,
                      const ALsizei NumChans, const ALsizei BufferSize);
-void Mix_C(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE],
-           ALfloat *CurrentGains, const ALfloat *TargetGains, ALsizei Counter, ALsizei OutPos,
-           ALsizei BufferSize);
-void MixRow_C(ALfloat *OutBuffer, const ALfloat *Gains,
-              const ALfloat (*RESTRICT data)[BUFFERSIZE], ALsizei InChans,
-              ALsizei InPos, ALsizei BufferSize);
+void Mix_C(const ALfloat *data, const ALsizei OutChans, ALfloat (*OutBuffer)[BUFFERSIZE],
+           ALfloat *CurrentGains, const ALfloat *TargetGains, const ALsizei Counter,
+           const ALsizei OutPos, const ALsizei BufferSize);
+void MixRow_C(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*data)[BUFFERSIZE],
+              const ALsizei InChans, const ALsizei InPos, const ALsizei BufferSize);
 
 /* SSE mixers */
 void MixHrtf_SSE(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
-                 const ALfloat *data, ALsizei Offset, ALsizei OutPos,
+                 const ALfloat *data, ALsizei Offset, const ALsizei OutPos,
                  const ALsizei IrSize, MixHrtfParams *hrtfparams,
-                 HrtfState *hrtfstate, ALsizei BufferSize);
+                 HrtfState *hrtfstate, const ALsizei BufferSize);
 void MixHrtfBlend_SSE(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
-                      const ALfloat *data, ALsizei Offset, ALsizei OutPos,
+                      const ALfloat *data, ALsizei Offset, const ALsizei OutPos,
                       const ALsizei IrSize, const HrtfParams *oldparams,
                       MixHrtfParams *newparams, HrtfState *hrtfstate,
-                      ALsizei BufferSize);
+                      const ALsizei BufferSize);
 void MixDirectHrtf_SSE(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
                        const ALfloat (*data)[BUFFERSIZE], DirectHrtfState *State,
                        const ALsizei NumChans, const ALsizei BufferSize);
-void Mix_SSE(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE],
-             ALfloat *CurrentGains, const ALfloat *TargetGains, ALsizei Counter, ALsizei OutPos,
-             ALsizei BufferSize);
-void MixRow_SSE(ALfloat *OutBuffer, const ALfloat *Gains,
-                const ALfloat (*RESTRICT data)[BUFFERSIZE], ALsizei InChans,
-                ALsizei InPos, ALsizei BufferSize);
+void Mix_SSE(const ALfloat *data, const ALsizei OutChans, ALfloat (*OutBuffer)[BUFFERSIZE],
+             ALfloat *CurrentGains, const ALfloat *TargetGains, const ALsizei Counter,
+             const ALsizei OutPos, const ALsizei BufferSize);
+void MixRow_SSE(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*data)[BUFFERSIZE],
+                const ALsizei InChans, const ALsizei InPos, const ALsizei BufferSize);
 
 /* SSE resamplers */
 inline void InitiatePositionArrays(ALsizei frac, ALint increment, ALsizei *RESTRICT frac_arr, ALsizei *RESTRICT pos_arr, ALsizei size)
@@ -88,23 +86,22 @@ const ALfloat *Resample_bsinc_SSE(const InterpState *state, const ALfloat *RESTR
 
 /* Neon mixers */
 void MixHrtf_Neon(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
-                  const ALfloat *data, ALsizei Offset, ALsizei OutPos,
+                  const ALfloat *data, ALsizei Offset, const ALsizei OutPos,
                   const ALsizei IrSize, MixHrtfParams *hrtfparams,
-                  HrtfState *hrtfstate, ALsizei BufferSize);
+                  HrtfState *hrtfstate, const ALsizei BufferSize);
 void MixHrtfBlend_Neon(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
-                       const ALfloat *data, ALsizei Offset, ALsizei OutPos,
+                       const ALfloat *data, ALsizei Offset, const ALsizei OutPos,
                        const ALsizei IrSize, const HrtfParams *oldparams,
                        MixHrtfParams *newparams, HrtfState *hrtfstate,
-                       ALsizei BufferSize);
+                       const ALsizei BufferSize);
 void MixDirectHrtf_Neon(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
                         const ALfloat (*data)[BUFFERSIZE], DirectHrtfState *State,
                         const ALsizei NumChans, const ALsizei BufferSize);
-void Mix_Neon(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE],
-              ALfloat *CurrentGains, const ALfloat *TargetGains, ALsizei Counter, ALsizei OutPos,
-              ALsizei BufferSize);
-void MixRow_Neon(ALfloat *OutBuffer, const ALfloat *Gains,
-                 const ALfloat (*RESTRICT data)[BUFFERSIZE], ALsizei InChans,
-                 ALsizei InPos, ALsizei BufferSize);
+void Mix_Neon(const ALfloat *data, const ALsizei OutChans, ALfloat (*OutBuffer)[BUFFERSIZE],
+              ALfloat *CurrentGains, const ALfloat *TargetGains, const ALsizei Counter,
+              const ALsizei OutPos, const ALsizei BufferSize);
+void MixRow_Neon(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*data)[BUFFERSIZE],
+                 const ALsizei InChans, const ALsizei InPos, const ALsizei BufferSize);
 
 /* Neon resamplers */
 const ALfloat *Resample_lerp_Neon(const InterpState *state, const ALfloat *RESTRICT src,
diff --git a/Alc/mixer/mixer_c.cpp b/Alc/mixer/mixer_c.cpp
index 38bb7b64..0d8b1d5f 100644
--- a/Alc/mixer/mixer_c.cpp
+++ b/Alc/mixer/mixer_c.cpp
@@ -130,9 +130,9 @@ static inline void ApplyCoeffs(ALsizei Offset, ALfloat (&Values)[HRIR_LENGTH][2]
 #include "hrtf_inc.cpp"
 
 
-void Mix_C(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE],
-           ALfloat *CurrentGains, const ALfloat *TargetGains, ALsizei Counter, ALsizei OutPos,
-           ALsizei BufferSize)
+void Mix_C(const ALfloat *data, const ALsizei OutChans, ALfloat (*OutBuffer)[BUFFERSIZE],
+           ALfloat *CurrentGains, const ALfloat *TargetGains, const ALsizei Counter,
+           const ALsizei OutPos, const ALsizei BufferSize)
 {
     ASSUME(OutChans > 0);
     ASSUME(BufferSize > 0);
@@ -140,6 +140,7 @@ void Mix_C(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer)[
     const ALfloat delta{(Counter > 0) ? 1.0f / static_cast<ALfloat>(Counter) : 0.0f};
     for(ALsizei c{0};c < OutChans;c++)
     {
+        ALfloat *RESTRICT dst{&OutBuffer[c][OutPos]};
         ALsizei pos{0};
         ALfloat gain{CurrentGains[c]};
 
@@ -151,7 +152,7 @@ void Mix_C(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer)[
             ALfloat step_count{0.0f};
             for(;pos < minsize;pos++)
             {
-                OutBuffer[c][OutPos+pos] += data[pos] * (gain + step*step_count);
+                dst[pos] += data[pos] * (gain + step*step_count);
                 step_count += 1.0f;
             }
             if(pos == Counter)
@@ -164,7 +165,7 @@ void Mix_C(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer)[
         if(!(std::fabs(gain) > GAIN_SILENCE_THRESHOLD))
             continue;
         for(;pos < BufferSize;pos++)
-            OutBuffer[c][OutPos+pos] += data[pos]*gain;
+            dst[pos] += data[pos]*gain;
     }
 }
 
@@ -174,18 +175,20 @@ void Mix_C(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer)[
  * transform. And as the matrices are more or less static once set up, no
  * stepping is necessary.
  */
-void MixRow_C(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*RESTRICT data)[BUFFERSIZE], ALsizei InChans, ALsizei InPos, ALsizei BufferSize)
+void MixRow_C(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*data)[BUFFERSIZE],
+              const ALsizei InChans, const ALsizei InPos, const ALsizei BufferSize)
 {
     ASSUME(InChans > 0);
     ASSUME(BufferSize > 0);
 
     for(ALsizei c{0};c < InChans;c++)
     {
+        const ALfloat *RESTRICT src{&data[c][InPos]};
         const ALfloat gain{Gains[c]};
         if(!(std::fabs(gain) > GAIN_SILENCE_THRESHOLD))
             continue;
 
         for(ALsizei i{0};i < BufferSize;i++)
-            OutBuffer[i] += data[c][InPos+i] * gain;
+            OutBuffer[i] += src[i] * gain;
     }
 }
diff --git a/Alc/mixer/mixer_neon.cpp b/Alc/mixer/mixer_neon.cpp
index 4843922f..8d70d979 100644
--- a/Alc/mixer/mixer_neon.cpp
+++ b/Alc/mixer/mixer_neon.cpp
@@ -169,47 +169,46 @@ static inline void ApplyCoeffs(ALsizei Offset, ALfloat (&Values)[HRIR_LENGTH][2]
 #include "hrtf_inc.cpp"
 
 
-void Mix_Neon(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE],
-              ALfloat *CurrentGains, const ALfloat *TargetGains, ALsizei Counter, ALsizei OutPos,
-              ALsizei BufferSize)
+void Mix_Neon(const ALfloat *data, const ALsizei OutChans, ALfloat (*OutBuffer)[BUFFERSIZE],
+              ALfloat *CurrentGains, const ALfloat *TargetGains, const ALsizei Counter,
+              const ALsizei OutPos, const ALsizei BufferSize)
 {
-    const ALfloat delta = (Counter > 0) ? 1.0f/(ALfloat)Counter : 0.0f;
-    ALsizei c;
-
     ASSUME(OutChans > 0);
     ASSUME(BufferSize > 0);
 
-    for(c = 0;c < OutChans;c++)
+    const ALfloat delta{(Counter > 0) ? 1.0f/(ALfloat)Counter : 0.0f};
+    for(ALsizei c{0};c < OutChans;c++)
     {
-        ALsizei pos = 0;
-        ALfloat gain = CurrentGains[c];
-        const ALfloat diff = TargetGains[c] - gain;
+        ALfloat *RESTRICT dst{al::assume_aligned<16>(&OutBuffer[c][OutPos])};
+        ALsizei pos{0};
+        ALfloat gain{CurrentGains[c]};
+        const ALfloat diff{TargetGains[c] - gain};
 
-        if(fabsf(diff) > std::numeric_limits<float>::epsilon())
+        if(std::fabs(diff) > std::numeric_limits<float>::epsilon())
         {
-            ALsizei minsize = mini(BufferSize, Counter);
-            const ALfloat step = diff * delta;
-            ALfloat step_count = 0.0f;
+            ALsizei minsize{mini(BufferSize, Counter)};
+            const ALfloat step{diff * delta};
+            ALfloat step_count{0.0f};
             /* Mix with applying gain steps in aligned multiples of 4. */
             if(LIKELY(minsize > 3))
             {
-                const float32x4_t four4 = vdupq_n_f32(4.0f);
-                const float32x4_t step4 = vdupq_n_f32(step);
-                const float32x4_t gain4 = vdupq_n_f32(gain);
-                float32x4_t step_count4 = vsetq_lane_f32(0.0f,
+                const float32x4_t four4{vdupq_n_f32(4.0f)};
+                const float32x4_t step4{vdupq_n_f32(step)};
+                const float32x4_t gain4{vdupq_n_f32(gain)};
+                float32x4_t step_count4{vsetq_lane_f32(0.0f,
                     vsetq_lane_f32(1.0f,
                     vsetq_lane_f32(2.0f,
                     vsetq_lane_f32(3.0f, vdupq_n_f32(0.0f), 3),
                     2), 1), 0
-                );
-                ALsizei todo = minsize >> 2;
+                )};
+                ALsizei todo{minsize >> 2};
 
                 do {
                     const float32x4_t val4 = vld1q_f32(&data[pos]);
-                    float32x4_t dry4 = vld1q_f32(&OutBuffer[c][OutPos+pos]);
+                    float32x4_t dry4 = vld1q_f32(&dst[pos]);
                     dry4 = vmlaq_f32(dry4, val4, vmlaq_f32(gain4, step4, step_count4));
                     step_count4 = vaddq_f32(step_count4, four4);
-                    vst1q_f32(&OutBuffer[c][OutPos+pos], dry4);
+                    vst1q_f32(&dst[pos], dry4);
                     pos += 4;
                 } while(--todo);
                 /* NOTE: step_count4 now represents the next four counts after
@@ -221,7 +220,7 @@ void Mix_Neon(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffe
             /* Mix with applying left over gain steps that aren't aligned multiples of 4. */
             for(;pos < minsize;pos++)
             {
-                OutBuffer[c][OutPos+pos] += data[pos]*(gain + step*step_count);
+                dst[pos] += data[pos]*(gain + step*step_count);
                 step_count += 1.0f;
             }
             if(pos == Counter)
@@ -233,48 +232,48 @@ void Mix_Neon(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffe
             /* Mix until pos is aligned with 4 or the mix is done. */
             minsize = mini(BufferSize, (pos+3)&~3);
             for(;pos < minsize;pos++)
-                OutBuffer[c][OutPos+pos] += data[pos]*gain;
+                dst[pos] += data[pos]*gain;
         }
 
-        if(!(fabsf(gain) > GAIN_SILENCE_THRESHOLD))
+        if(!(std::fabs(gain) > GAIN_SILENCE_THRESHOLD))
             continue;
         if(LIKELY(BufferSize-pos > 3))
         {
-            ALsizei todo = (BufferSize-pos) >> 2;
+            ALsizei todo{(BufferSize-pos) >> 2};
             const float32x4_t gain4 = vdupq_n_f32(gain);
             do {
                 const float32x4_t val4 = vld1q_f32(&data[pos]);
-                float32x4_t dry4 = vld1q_f32(&OutBuffer[c][OutPos+pos]);
+                float32x4_t dry4 = vld1q_f32(&dst[pos]);
                 dry4 = vmlaq_f32(dry4, val4, gain4);
-                vst1q_f32(&OutBuffer[c][OutPos+pos], dry4);
+                vst1q_f32(&dst[pos], dry4);
                 pos += 4;
             } while(--todo);
         }
         for(;pos < BufferSize;pos++)
-            OutBuffer[c][OutPos+pos] += data[pos]*gain;
+            dst[pos] += data[pos]*gain;
     }
 }
 
-void MixRow_Neon(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*RESTRICT data)[BUFFERSIZE], ALsizei InChans, ALsizei InPos, ALsizei BufferSize)
+void MixRow_Neon(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*data)[BUFFERSIZE],
+                 const ALsizei InChans, const ALsizei InPos, const ALsizei BufferSize)
 {
-    ALsizei c;
-
     ASSUME(InChans > 0);
     ASSUME(BufferSize > 0);
 
-    for(c = 0;c < InChans;c++)
+    for(ALsizei c{0};c < InChans;c++)
     {
-        ALsizei pos = 0;
-        const ALfloat gain = Gains[c];
-        if(!(fabsf(gain) > GAIN_SILENCE_THRESHOLD))
+        const ALfloat *RESTRICT src{al::assume_aligned<16>(&data[c][InPos])};
+        ALsizei pos{0};
+        const ALfloat gain{Gains[c]};
+        if(!(std::fabs(gain) > GAIN_SILENCE_THRESHOLD))
             continue;
 
         if(LIKELY(BufferSize > 3))
         {
-            ALsizei todo = BufferSize >> 2;
-            float32x4_t gain4 = vdupq_n_f32(gain);
+            ALsizei todo{BufferSize >> 2};
+            float32x4_t gain4{vdupq_n_f32(gain)};
             do {
-                const float32x4_t val4 = vld1q_f32(&data[c][InPos+pos]);
+                const float32x4_t val4 = vld1q_f32(&src[pos]);
                 float32x4_t dry4 = vld1q_f32(&OutBuffer[pos]);
                 dry4 = vmlaq_f32(dry4, val4, gain4);
                 vst1q_f32(&OutBuffer[pos], dry4);
@@ -282,6 +281,6 @@ void MixRow_Neon(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*RESTR
             } while(--todo);
         }
         for(;pos < BufferSize;pos++)
-            OutBuffer[pos] += data[c][InPos+pos]*gain;
+            OutBuffer[pos] += src[pos]*gain;
     }
 }
diff --git a/Alc/mixer/mixer_sse.cpp b/Alc/mixer/mixer_sse.cpp
index 9eadfd9e..d18af086 100644
--- a/Alc/mixer/mixer_sse.cpp
+++ b/Alc/mixer/mixer_sse.cpp
@@ -149,9 +149,9 @@ static inline void ApplyCoeffs(ALsizei Offset, ALfloat (&Values)[HRIR_LENGTH][2]
 #include "hrtf_inc.cpp"
 
 
-void Mix_SSE(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE],
-             ALfloat *CurrentGains, const ALfloat *TargetGains, ALsizei Counter, ALsizei OutPos,
-             ALsizei BufferSize)
+void Mix_SSE(const ALfloat *data, const ALsizei OutChans, ALfloat (*OutBuffer)[BUFFERSIZE],
+             ALfloat *CurrentGains, const ALfloat *TargetGains, const ALsizei Counter,
+             const ALsizei OutPos, const ALsizei BufferSize)
 {
     ASSUME(OutChans > 0);
     ASSUME(BufferSize > 0);
@@ -159,6 +159,7 @@ void Mix_SSE(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer
     const ALfloat delta{(Counter > 0) ? 1.0f / static_cast<ALfloat>(Counter) : 0.0f};
     for(ALsizei c{0};c < OutChans;c++)
     {
+        ALfloat *RESTRICT dst{al::assume_aligned<16>(&OutBuffer[c][OutPos])};
         ALsizei pos{0};
         ALfloat gain{CurrentGains[c]};
         const ALfloat diff{TargetGains[c] - gain};
@@ -178,12 +179,12 @@ void Mix_SSE(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer
                 ALsizei todo{minsize >> 2};
                 do {
                     const __m128 val4{_mm_load_ps(&data[pos])};
-                    __m128 dry4{_mm_load_ps(&OutBuffer[c][OutPos+pos])};
+                    __m128 dry4{_mm_load_ps(&dst[pos])};
 #define MLA4(x, y, z) _mm_add_ps(x, _mm_mul_ps(y, z))
                     /* dry += val * (gain + step*step_count) */
                     dry4 = MLA4(dry4, val4, MLA4(gain4, step4, step_count4));
 #undef MLA4
-                    _mm_store_ps(&OutBuffer[c][OutPos+pos], dry4);
+                    _mm_store_ps(&dst[pos], dry4);
                     step_count4 = _mm_add_ps(step_count4, four4);
                     pos += 4;
                 } while(--todo);
@@ -196,7 +197,7 @@ void Mix_SSE(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer
             /* Mix with applying left over gain steps that aren't aligned multiples of 4. */
             for(;pos < minsize;pos++)
             {
-                OutBuffer[c][OutPos+pos] += data[pos]*(gain + step*step_count);
+                dst[pos] += data[pos]*(gain + step*step_count);
                 step_count += 1.0f;
             }
             if(pos == Counter)
@@ -208,7 +209,7 @@ void Mix_SSE(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer
             /* Mix until pos is aligned with 4 or the mix is done. */
             minsize = mini(BufferSize, (pos+3)&~3);
             for(;pos < minsize;pos++)
-                OutBuffer[c][OutPos+pos] += data[pos]*gain;
+                dst[pos] += data[pos]*gain;
         }
 
         if(!(std::fabs(gain) > GAIN_SILENCE_THRESHOLD))
@@ -219,24 +220,26 @@ void Mix_SSE(const ALfloat *data, ALsizei OutChans, ALfloat (*RESTRICT OutBuffer
             const __m128 gain4{_mm_set1_ps(gain)};
             do {
                 const __m128 val4{_mm_load_ps(&data[pos])};
-                __m128 dry4{_mm_load_ps(&OutBuffer[c][OutPos+pos])};
+                __m128 dry4{_mm_load_ps(&dst[pos])};
                 dry4 = _mm_add_ps(dry4, _mm_mul_ps(val4, gain4));
-                _mm_store_ps(&OutBuffer[c][OutPos+pos], dry4);
+                _mm_store_ps(&dst[pos], dry4);
                 pos += 4;
             } while(--todo);
         }
         for(;pos < BufferSize;pos++)
-            OutBuffer[c][OutPos+pos] += data[pos]*gain;
+            dst[pos] += data[pos]*gain;
     }
 }
 
-void MixRow_SSE(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*RESTRICT data)[BUFFERSIZE], ALsizei InChans, ALsizei InPos, ALsizei BufferSize)
+void MixRow_SSE(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*data)[BUFFERSIZE],
+                const ALsizei InChans, const ALsizei InPos, const ALsizei BufferSize)
 {
     ASSUME(InChans > 0);
     ASSUME(BufferSize > 0);
 
     for(ALsizei c{0};c < InChans;c++)
     {
+        const ALfloat *RESTRICT src{al::assume_aligned<16>(&data[c][InPos])};
         const ALfloat gain{Gains[c]};
         if(!(std::fabs(gain) > GAIN_SILENCE_THRESHOLD))
             continue;
@@ -247,7 +250,7 @@ void MixRow_SSE(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*RESTRI
             ALsizei todo{BufferSize >> 2};
             const __m128 gain4 = _mm_set1_ps(gain);
             do {
-                const __m128 val4{_mm_load_ps(&data[c][InPos+pos])};
+                const __m128 val4{_mm_load_ps(&src[pos])};
                 __m128 dry4{_mm_load_ps(&OutBuffer[pos])};
                 dry4 = _mm_add_ps(dry4, _mm_mul_ps(val4, gain4));
                 _mm_store_ps(&OutBuffer[pos], dry4);
@@ -255,6 +258,6 @@ void MixRow_SSE(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*RESTRI
             } while(--todo);
         }
         for(;pos < BufferSize;pos++)
-            OutBuffer[pos] += data[c][InPos+pos]*gain;
+            OutBuffer[pos] += src[pos]*gain;
     }
 }
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index 7f7013aa..c8fb31ef 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -597,7 +597,7 @@ struct RealMixParams {
     ALsizei NumChannels{0};
 };
 
-using POSTPROCESS = void(*)(ALCdevice *device, ALsizei SamplesToDo);
+using POSTPROCESS = void(*)(ALCdevice *device, const ALsizei SamplesToDo);
 
 struct ALCdevice {
     RefCount ref{1u};
diff --git a/OpenAL32/Include/alu.h b/OpenAL32/Include/alu.h
index d8e288f1..b24dbca0 100644
--- a/OpenAL32/Include/alu.h
+++ b/OpenAL32/Include/alu.h
@@ -334,12 +334,12 @@ struct ALvoice {
 void DeinitVoice(ALvoice *voice) noexcept;
 
 
-using MixerFunc = void(*)(const ALfloat *data, ALsizei OutChans,
-    ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE], ALfloat *CurrentGains,
-    const ALfloat *TargetGains, ALsizei Counter, ALsizei OutPos, ALsizei BufferSize);
+using MixerFunc = void(*)(const ALfloat *data, const ALsizei OutChans,
+    ALfloat (*OutBuffer)[BUFFERSIZE], ALfloat *CurrentGains, const ALfloat *TargetGains,
+    const ALsizei Counter, const ALsizei OutPos, const ALsizei BufferSize);
 using RowMixerFunc = void(*)(ALfloat *OutBuffer, const ALfloat *gains,
-    const ALfloat (*RESTRICT data)[BUFFERSIZE], ALsizei InChans, ALsizei InPos,
-    ALsizei BufferSize);
+    const ALfloat (*data)[BUFFERSIZE], const ALsizei InChans, const ALsizei InPos,
+    const ALsizei BufferSize);
 using HrtfMixerFunc = void(*)(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
     const ALfloat *data, ALsizei Offset, const ALsizei OutPos, const ALsizei IrSize,
     MixHrtfParams *hrtfparams, HrtfState *hrtfstate, const ALsizei BufferSize);