5 files changed, 22 insertions, 23 deletions
diff --git a/Alc/mixer/defs.h b/Alc/mixer/defs.h
index a6131958..3de6b01e 100644
--- a/Alc/mixer/defs.h
+++ b/Alc/mixer/defs.h
@@ -6,6 +6,8 @@
 #include "alMain.h"
 #include "alu.h"
 
+#include "alspan.h"
+
 
 struct MixGains;
 struct MixHrtfParams;
@@ -39,7 +41,7 @@ void MixHrtf_(FloatBufferLine &LeftOut, FloatBufferLine &RightOut, const ALfloat
 template<typename InstTag>
 void MixHrtfBlend_(FloatBufferLine &LeftOut, FloatBufferLine &RightOut, const ALfloat *InSamples, float2 *AccumSamples, const ALsizei OutPos, const ALsizei IrSize, const HrtfParams *oldparams, MixHrtfParams *newparams, const ALsizei BufferSize);
 template<typename InstTag>
-void MixDirectHrtf_(FloatBufferLine &LeftOut, FloatBufferLine &RightOut, const FloatBufferLine *InSamples, float2 *AccumSamples, DirectHrtfState *State, const ALsizei NumChans, const ALsizei BufferSize);
+void MixDirectHrtf_(FloatBufferLine &LeftOut, FloatBufferLine &RightOut, const al::span<const FloatBufferLine> InSamples, float2 *AccumSamples, DirectHrtfState *State, const ALsizei BufferSize);
 
 /* Vectorized resampler helpers */
 inline void InitiatePositionArrays(ALsizei frac, ALint increment, ALsizei *RESTRICT frac_arr, ALsizei *RESTRICT pos_arr, ALsizei size)
diff --git a/Alc/mixer/hrtfbase.h b/Alc/mixer/hrtfbase.h
index 571cdc89..bce9e573 100644
--- a/Alc/mixer/hrtfbase.h
+++ b/Alc/mixer/hrtfbase.h
@@ -102,22 +102,21 @@ inline void MixHrtfBlendBase(FloatBufferLine &LeftOut, FloatBufferLine &RightOut
 
 template<ApplyCoeffsT &ApplyCoeffs>
 inline void MixDirectHrtfBase(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
-    const FloatBufferLine *InSamples, float2 *RESTRICT AccumSamples, DirectHrtfState *State,
-    const ALsizei NumChans, const ALsizei BufferSize)
+    const al::span<const FloatBufferLine> InSamples, float2 *RESTRICT AccumSamples,
+    DirectHrtfState *State, const ALsizei BufferSize)
 {
-    ASSUME(NumChans > 0);
     ASSUME(BufferSize > 0);
 
     const ALsizei IrSize{State->IrSize};
     ASSUME(IrSize >= 4);
 
-    for(ALsizei c{0};c < NumChans;++c)
+    auto chanstate = State->Chan.begin();
+    for(const FloatBufferLine &input : InSamples)
     {
-        const FloatBufferLine &input = InSamples[c];
-        const auto &Coeffs = State->Chan[c].Coeffs;
+        const auto &Coeffs = chanstate->Coeffs;
 
-        auto accum_iter = std::copy_n(State->Chan[c].Values.begin(),
-            State->Chan[c].Values.size(), AccumSamples);
+        auto accum_iter = std::copy_n(chanstate->Values.begin(),
+            chanstate->Values.size(), AccumSamples);
         std::fill_n(accum_iter, BufferSize, float2{});
 
         for(ALsizei i{0};i < BufferSize;++i)
@@ -130,8 +129,9 @@ inline void MixDirectHrtfBase(FloatBufferLine &LeftOut, FloatBufferLine &RightOu
         for(ALsizei i{0};i < BufferSize;++i)
             RightOut[i] += AccumSamples[i][1];
 
-        std::copy_n(AccumSamples + BufferSize, State->Chan[c].Values.size(),
-            State->Chan[c].Values.begin());
+        std::copy_n(AccumSamples + BufferSize, chanstate->Values.size(),
+            chanstate->Values.begin());
+        ++chanstate;
     }
 }
 
diff --git a/Alc/mixer/mixer_c.cpp b/Alc/mixer/mixer_c.cpp
index 79ee305b..8ad3aca3 100644
--- a/Alc/mixer/mixer_c.cpp
+++ b/Alc/mixer/mixer_c.cpp
@@ -136,11 +136,10 @@ void MixHrtfBlend_<CTag>(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
 
 template<>
 void MixDirectHrtf_<CTag>(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
-    const FloatBufferLine *InSamples, float2 *AccumSamples, DirectHrtfState *State,
-    const ALsizei NumChans, const ALsizei BufferSize)
+    const al::span<const FloatBufferLine> InSamples, float2 *AccumSamples, DirectHrtfState *State,
+    const ALsizei BufferSize)
 {
-    MixDirectHrtfBase<ApplyCoeffs>(LeftOut, RightOut, InSamples, AccumSamples, State, NumChans,
-        BufferSize);
+    MixDirectHrtfBase<ApplyCoeffs>(LeftOut, RightOut, InSamples, AccumSamples, State, BufferSize);
 }
 
 
diff --git a/Alc/mixer/mixer_neon.cpp b/Alc/mixer/mixer_neon.cpp
index e6f257fd..6f4af98b 100644
--- a/Alc/mixer/mixer_neon.cpp
+++ b/Alc/mixer/mixer_neon.cpp
@@ -182,11 +182,10 @@ void MixHrtfBlend_<NEONTag>(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
 
 template<>
 void MixDirectHrtf_<NEONTag>(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
-    const FloatBufferLine *InSamples, float2 *AccumSamples, DirectHrtfState *State,
-    const ALsizei NumChans, const ALsizei BufferSize)
+    const al::span<const FloatBufferLine> InSamples, float2 *AccumSamples, DirectHrtfState *State,
+    const ALsizei BufferSize)
 {
-    MixDirectHrtfBase<ApplyCoeffs>(LeftOut, RightOut, InSamples, AccumSamples, State, NumChans,
-        BufferSize);
+    MixDirectHrtfBase<ApplyCoeffs>(LeftOut, RightOut, InSamples, AccumSamples, State, BufferSize);
 }
 
 
diff --git a/Alc/mixer/mixer_sse.cpp b/Alc/mixer/mixer_sse.cpp
index a4e80256..156b3dab 100644
--- a/Alc/mixer/mixer_sse.cpp
+++ b/Alc/mixer/mixer_sse.cpp
@@ -139,11 +139,10 @@ void MixHrtfBlend_<SSETag>(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
 
 template<>
 void MixDirectHrtf_<SSETag>(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
-    const FloatBufferLine *InSamples, float2 *AccumSamples, DirectHrtfState *State,
-    const ALsizei NumChans, const ALsizei BufferSize)
+    const al::span<const FloatBufferLine> InSamples, float2 *AccumSamples, DirectHrtfState *State,
+    const ALsizei BufferSize)
 {
-    MixDirectHrtfBase<ApplyCoeffs>(LeftOut, RightOut, InSamples, AccumSamples, State, NumChans,
-        BufferSize);
+    MixDirectHrtfBase<ApplyCoeffs>(LeftOut, RightOut, InSamples, AccumSamples, State, BufferSize);
 }