diff options
Diffstat (limited to 'Alc/effects')
| -rw-r--r-- | Alc/effects/pshifter.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/Alc/effects/pshifter.c b/Alc/effects/pshifter.c index 2110141c..ee6ca806 100644 --- a/Alc/effects/pshifter.c +++ b/Alc/effects/pshifter.c @@ -58,7 +58,7 @@ typedef struct ALpshifterState { /* Effect parameters */ ALsizei count; ALfloat PitchShift; - ALfloat Frequency; + ALfloat FreqBin; /*Effects buffers*/ ALfloat InFIFO[STFT_SIZE]; @@ -226,7 +226,7 @@ static ALboolean ALpshifterState_deviceUpdate(ALpshifterState *state, ALCdevice /* (Re-)initializing parameters and clear the buffers. */ state->count = FIFO_LATENCY; state->PitchShift = 1.0f; - state->Frequency = (ALfloat)device->Frequency; + state->FreqBin = device->Frequency / (ALfloat)STFT_SIZE; memset(state->InFIFO, 0, sizeof(state->InFIFO)); memset(state->OutFIFO, 0, sizeof(state->OutFIFO)); @@ -263,24 +263,24 @@ static ALvoid ALpshifterState_process(ALpshifterState *state, ALsizei SamplesToD */ static const ALfloat expected = F_TAU / (ALfloat)OVERSAMP; - const ALfloat freq_bin = state->Frequency / (ALfloat)STFT_SIZE; + const ALfloat freq_bin = state->FreqBin; ALfloat *restrict bufferOut = state->BufferOut; + ALsizei count = state->count; ALsizei i, j, k; for(i = 0;i < SamplesToDo;) { do { /* Fill FIFO buffer with samples data */ - state->InFIFO[state->count] = SamplesIn[0][i]; - bufferOut[i] = state->OutFIFO[state->count - FIFO_LATENCY]; + state->InFIFO[count] = SamplesIn[0][i]; + bufferOut[i] = state->OutFIFO[count - FIFO_LATENCY]; - state->count++; - } while(++i < SamplesToDo && state->count < STFT_SIZE); + count++; + } while(++i < SamplesToDo && count < STFT_SIZE); /* Check whether FIFO buffer is filled */ - if(state->count < STFT_SIZE) break; - - state->count = FIFO_LATENCY; + if(count < STFT_SIZE) break; + count = FIFO_LATENCY; /* Real signal windowing and store in FFTbuffer */ for(k = 0;k < STFT_SIZE;k++) @@ -308,7 +308,8 @@ static ALvoid ALpshifterState_process(ALpshifterState *state, ALsizei SamplesToD tmp = (component.Phase - state->LastPhase[k]) - (ALfloat)k*expected; /* Map delta phase into +/- Pi interval */ - tmp -= F_PI * (ALfloat)(fastf2i(tmp/F_PI) + (fastf2i(tmp/F_PI)&1)); + j = fastf2i(tmp / F_PI); + tmp -= F_PI * (ALfloat)(j + (j&1)); /* Get deviation from bin frequency from the +/- Pi interval */ tmp /= expected; @@ -383,6 +384,7 @@ static ALvoid ALpshifterState_process(ALpshifterState *state, ALsizei SamplesToD for(k = 0;k < FIFO_LATENCY;k++) state->InFIFO[k] = state->InFIFO[k+STFT_STEP]; } + state->count = count; /* Now, mix the processed sound data to the output. */ MixSamples(bufferOut, NumChannels, SamplesOut, state->CurrentGains, state->TargetGains, |