diff options
Diffstat (limited to 'Alc/alcDistortion.c')
| -rw-r--r-- | Alc/alcDistortion.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/Alc/alcDistortion.c b/Alc/alcDistortion.c index c431a2ca..0b0c9c93 100644 --- a/Alc/alcDistortion.c +++ b/Alc/alcDistortion.c @@ -55,7 +55,6 @@ typedef struct ALdistortionState { /* Effect parameters */ ALEQFilter bandpass; ALEQFilter lowpass; - ALfloat frequency; ALfloat attenuation; ALfloat edge_coeff; } ALdistortionState; @@ -68,17 +67,16 @@ static ALvoid DistortionDestroy(ALeffectState *effect) static ALboolean DistortionDeviceUpdate(ALeffectState *effect, ALCdevice *Device) { - ALdistortionState *state = STATIC_UPCAST(ALdistortionState, ALeffectState, effect); - - state->frequency = (ALfloat)Device->Frequency; - return AL_TRUE; + (void)effect; + (void)Device; } static ALvoid DistortionUpdate(ALeffectState *effect, ALCdevice *Device, const ALeffectslot *Slot) { ALdistortionState *state = STATIC_UPCAST(ALdistortionState, ALeffectState, effect); ALfloat gain = sqrtf(1.0f / Device->NumChan) * Slot->Gain; + ALfloat frequency = (ALfloat)Device->Frequency; ALuint it; ALfloat w0; ALfloat alpha; @@ -105,7 +103,7 @@ static ALvoid DistortionUpdate(ALeffectState *effect, ALCdevice *Device, const A cutoff = Slot->effect.Distortion.LowpassCutoff; /* Bandwidth value is constant in octaves */ bandwidth = (cutoff / 2.0f) / (cutoff * 0.67f); - w0 = 2.0f * F_PI * cutoff / (state->frequency * 4.0f); + w0 = 2.0f*F_PI * cutoff / (frequency*4.0f); alpha = sinf(w0) * sinhf(logf(2.0f) / 2.0f * bandwidth * w0 / sinf(w0)); state->lowpass.b[0] = (1.0f - cosf(w0)) / 2.0f; state->lowpass.b[1] = 1.0f - cosf(w0); @@ -118,7 +116,7 @@ static ALvoid DistortionUpdate(ALeffectState *effect, ALCdevice *Device, const A cutoff = Slot->effect.Distortion.EQCenter; /* Convert bandwidth in Hz to octaves */ bandwidth = Slot->effect.Distortion.EQBandwidth / (cutoff * 0.67f); - w0 = 2.0f * F_PI * cutoff / (state->frequency * 4.0f); + w0 = 2.0f*F_PI * cutoff / (frequency*4.0f); alpha = sinf(w0) * sinhf(logf(2.0f) / 2.0f * bandwidth * w0 / sinf(w0)); state->bandpass.b[0] = alpha; state->bandpass.b[1] = 0; |