From ab6622a8d6912fa6ff8da9caa3fcaf96047ca14a Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Sun, 27 Sep 2015 23:52:16 -0700
Subject: Replace the cubic resampler with a 4-point sinc/lanczos filter

---
 OpenAL32/Include/alMain.h | 2 +-
 OpenAL32/Include/alu.h    | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

(limited to 'OpenAL32/Include')

diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index 9d76fcd2..7d508721 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -528,7 +528,7 @@ enum DistanceModel {
 enum Resampler {
     PointResampler,
     LinearResampler,
-    CubicResampler,
+    FIR4Resampler,
 
     ResamplerMax,
 };
diff --git a/OpenAL32/Include/alu.h b/OpenAL32/Include/alu.h
index f5fc9fa4..16b3e1ab 100644
--- a/OpenAL32/Include/alu.h
+++ b/OpenAL32/Include/alu.h
@@ -202,16 +202,16 @@ inline ALuint64 clampu64(ALuint64 val, ALuint64 min, ALuint64 max)
 { return minu64(max, maxu64(min, val)); }
 
 
-extern alignas(16) ALfloat CubicLUT[FRACTIONONE][4];
+extern alignas(16) ALfloat ResampleCoeffs[FRACTIONONE][4];
 
 
 inline ALfloat lerp(ALfloat val1, ALfloat val2, ALfloat mu)
 {
     return val1 + (val2-val1)*mu;
 }
-inline ALfloat cubic(ALfloat val0, ALfloat val1, ALfloat val2, ALfloat val3, ALuint frac)
+inline ALfloat resample_fir4(ALfloat val0, ALfloat val1, ALfloat val2, ALfloat val3, ALuint frac)
 {
-    const ALfloat *k = CubicLUT[frac];
+    const ALfloat *k = ResampleCoeffs[frac];
     return k[0]*val0 + k[1]*val1 + k[2]*val2 + k[3]*val3;
 }
 
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