diff options
author | Chris Robinson <[email protected]> | 2015-09-27 23:52:16 -0700 |
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committer | Chris Robinson <[email protected]> | 2015-09-27 23:57:25 -0700 |
commit | ab6622a8d6912fa6ff8da9caa3fcaf96047ca14a (patch) | |
tree | a872017f199f85f55b55d21dcb939f96aad70077 /OpenAL32/Include | |
parent | 3e60b1898943c26d817aef8d31466c1fee5aa83b (diff) |
Replace the cubic resampler with a 4-point sinc/lanczos filter
Diffstat (limited to 'OpenAL32/Include')
-rw-r--r-- | OpenAL32/Include/alMain.h | 2 | ||||
-rw-r--r-- | OpenAL32/Include/alu.h | 6 |
2 files changed, 4 insertions, 4 deletions
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; } |