diff options
Diffstat (limited to 'OpenAL32/Include')
| -rw-r--r-- | OpenAL32/Include/alu.h | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/OpenAL32/Include/alu.h b/OpenAL32/Include/alu.h index 70beebce..41182749 100644 --- a/OpenAL32/Include/alu.h +++ b/OpenAL32/Include/alu.h @@ -116,7 +116,7 @@ typedef void (*HrtfMixerFunc)(ALfloat (*restrict OutBuffer)[BUFFERSIZE], const A #define SPEEDOFSOUNDMETRESPERSEC (343.3f) #define AIRABSORBGAINHF (0.99426f) /* -0.05dB */ -#define FRACTIONBITS (14) +#define FRACTIONBITS (12) #define FRACTIONONE (1<<FRACTIONBITS) #define FRACTIONMASK (FRACTIONONE-1) @@ -164,22 +164,22 @@ inline ALuint64 clampu64(ALuint64 val, ALuint64 min, ALuint64 max) { return minu64(max, maxu64(min, val)); } +extern ALfloat CubicLUT[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, ALfloat mu) +inline ALfloat cubic(ALfloat val0, ALfloat val1, ALfloat val2, ALfloat val3, ALuint frac) { - ALfloat mu2 = mu*mu, mu3 = mu*mu*mu; - ALfloat a0 = -0.5f*mu3 + mu2 + -0.5f*mu; - ALfloat a1 = 1.5f*mu3 + -2.5f*mu2 + 1.0f; - ALfloat a2 = -1.5f*mu3 + 2.0f*mu2 + 0.5f*mu; - ALfloat a3 = 0.5f*mu3 + -0.5f*mu2; - - return a0*val0 + a1*val1 + a2*val2 + a3*val3; + const ALfloat *k = CubicLUT[frac]; + return k[0]*val0 + k[1]*val1 + k[2]*val2 + k[3]*val3; } +void aluInitResamplers(void); + ALvoid aluInitPanning(ALCdevice *Device); /** |