diff options
Diffstat (limited to 'servers/audio/effects/audio_effect_pitch_shift.cpp')
| -rw-r--r-- | servers/audio/effects/audio_effect_pitch_shift.cpp | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/servers/audio/effects/audio_effect_pitch_shift.cpp b/servers/audio/effects/audio_effect_pitch_shift.cpp index a8f25ac325..fb6b56d984 100644 --- a/servers/audio/effects/audio_effect_pitch_shift.cpp +++ b/servers/audio/effects/audio_effect_pitch_shift.cpp @@ -94,7 +94,9 @@ void SMBPitchShift::PitchShift(float pitchShift, long numSampsToProcess, long ff freqPerBin = sampleRate/(double)fftFrameSize; expct = 2.*Math_PI*(double)stepSize/(double)fftFrameSize; inFifoLatency = fftFrameSize-stepSize; - if (gRover == 0) gRover = inFifoLatency; + if (gRover == 0) { gRover = inFifoLatency; + +} /* initialize our static arrays */ @@ -142,8 +144,10 @@ void SMBPitchShift::PitchShift(float pitchShift, long numSampsToProcess, long ff /* map delta phase into +/- Pi interval */ qpd = tmp/Math_PI; - if (qpd >= 0) qpd += qpd&1; - else qpd -= qpd&1; + if (qpd >= 0) { qpd += qpd&1; + } else { qpd -= qpd&1; + +} tmp -= Math_PI*(double)qpd; /* get deviation from bin frequency from the +/- Pi interval */ @@ -200,7 +204,9 @@ void SMBPitchShift::PitchShift(float pitchShift, long numSampsToProcess, long ff } /* zero negative frequencies */ - for (k = fftFrameSize+2; k < 2*fftFrameSize; k++) gFFTworksp[k] = 0.; + for (k = fftFrameSize+2; k < 2*fftFrameSize; k++) { gFFTworksp[k] = 0.; + +} /* do inverse transform */ smbFft(gFFTworksp, fftFrameSize, 1); @@ -210,13 +216,17 @@ void SMBPitchShift::PitchShift(float pitchShift, long numSampsToProcess, long ff window = -.5*cos(2.*Math_PI*(double)k/(double)fftFrameSize)+.5; gOutputAccum[k] += 2.*window*gFFTworksp[2*k]/(fftFrameSize2*osamp); } - for (k = 0; k < stepSize; k++) gOutFIFO[k] = gOutputAccum[k]; + for (k = 0; k < stepSize; k++) { gOutFIFO[k] = gOutputAccum[k]; + +} /* shift accumulator */ memmove(gOutputAccum, gOutputAccum+stepSize, fftFrameSize*sizeof(float)); /* move input FIFO */ - for (k = 0; k < inFifoLatency; k++) gInFIFO[k] = gInFIFO[k+stepSize]; + for (k = 0; k < inFifoLatency; k++) { gInFIFO[k] = gInFIFO[k+stepSize]; + +} } } @@ -245,7 +255,9 @@ void SMBPitchShift::smbFft(float *fftBuffer, long fftFrameSize, long sign) for (i = 2; i < 2*fftFrameSize-2; i += 2) { for (bitm = 2, j = 0; bitm < 2*fftFrameSize; bitm <<= 1) { - if (i & bitm) j++; + if (i & bitm) { j++; + +} j <<= 1; } if (i < j) { |