diff options
Diffstat (limited to 'servers/audio/effects/audio_effect_pitch_shift.cpp')
| -rw-r--r-- | servers/audio/effects/audio_effect_pitch_shift.cpp | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/servers/audio/effects/audio_effect_pitch_shift.cpp b/servers/audio/effects/audio_effect_pitch_shift.cpp index a11ae37675..49a14cda04 100644 --- a/servers/audio/effects/audio_effect_pitch_shift.cpp +++ b/servers/audio/effects/audio_effect_pitch_shift.cpp @@ -1,5 +1,6 @@ #include "audio_effect_pitch_shift.h" #include "servers/audio_server.h" +#include "math_funcs.h" /**************************************************************************** * * NAME: smbPitchShift.cpp @@ -57,7 +58,7 @@ void SMBPitchShift::PitchShift(float pitchShift, long numSampsToProcess, long ff fftFrameSize2 = fftFrameSize/2; stepSize = fftFrameSize/osamp; freqPerBin = sampleRate/(double)fftFrameSize; - expct = 2.*M_PI*(double)stepSize/(double)fftFrameSize; + expct = 2.*Math_PI*(double)stepSize/(double)fftFrameSize; inFifoLatency = fftFrameSize-stepSize; if (gRover == 0) gRover = inFifoLatency; @@ -77,7 +78,7 @@ void SMBPitchShift::PitchShift(float pitchShift, long numSampsToProcess, long ff /* do windowing and re,im interleave */ for (k = 0; k < fftFrameSize;k++) { - window = -.5*cos(2.*M_PI*(double)k/(double)fftFrameSize)+.5; + window = -.5*cos(2.*Math_PI*(double)k/(double)fftFrameSize)+.5; gFFTworksp[2*k] = gInFIFO[k] * window; gFFTworksp[2*k+1] = 0.; } @@ -106,13 +107,13 @@ void SMBPitchShift::PitchShift(float pitchShift, long numSampsToProcess, long ff tmp -= (double)k*expct; /* map delta phase into +/- Pi interval */ - qpd = tmp/M_PI; + qpd = tmp/Math_PI; if (qpd >= 0) qpd += qpd&1; else qpd -= qpd&1; - tmp -= M_PI*(double)qpd; + tmp -= Math_PI*(double)qpd; /* get deviation from bin frequency from the +/- Pi interval */ - tmp = osamp*tmp/(2.*M_PI); + tmp = osamp*tmp/(2.*Math_PI); /* compute the k-th partials' true frequency */ tmp = (double)k*freqPerBin + tmp*freqPerBin; @@ -150,7 +151,7 @@ void SMBPitchShift::PitchShift(float pitchShift, long numSampsToProcess, long ff tmp /= freqPerBin; /* take osamp into account */ - tmp = 2.*M_PI*tmp/osamp; + tmp = 2.*Math_PI*tmp/osamp; /* add the overlap phase advance back in */ tmp += (double)k*expct; @@ -172,7 +173,7 @@ void SMBPitchShift::PitchShift(float pitchShift, long numSampsToProcess, long ff /* do windowing and add to output accumulator */ for(k=0; k < fftFrameSize; k++) { - window = -.5*cos(2.*M_PI*(double)k/(double)fftFrameSize)+.5; + 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]; @@ -224,7 +225,7 @@ void SMBPitchShift::smbFft(float *fftBuffer, long fftFrameSize, long sign) le2 = le>>1; ur = 1.0; ui = 0.0; - arg = M_PI / (le2>>1); + arg = Math_PI / (le2>>1); wr = cos(arg); wi = sign*sin(arg); for (j = 0; j < le2; j += 2) { |