added accelerate vdsp FFT support and use it on iOS
This commit is contained in:
		@@ -179,7 +179,9 @@ inline REALTYPE profile(REALTYPE fi, REALTYPE bwi) {
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inline void spectrum_copy(int nfreq, REALTYPE* freq1, REALTYPE* freq2)
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{
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	for (int i = 0; i<nfreq; i++) freq2[i] = freq1[i];
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    //for (int i = 0; i<nfreq; i++) freq2[i] = freq1[i];
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    FloatVectorOperations::copy(freq2, freq1, nfreq);
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};
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@@ -16,10 +16,17 @@
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	Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
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*/
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#if PS_USE_VDSP_FFT
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#define VIMAGE_H // crazy hack needed
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#include <Accelerate/Accelerate.h>
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//#include <vForce.h>
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#endif
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#include "Stretch.h"
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#include <stdlib.h>
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#include <math.h>
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FFT::FFT(int nsamples_, bool no_inverse)
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{
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    nsamples=nsamples_;
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@@ -41,6 +48,19 @@ FFT::FFT(int nsamples_, bool no_inverse)
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	data.resize(nsamples,true);
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	bool allow_long_planning = false; // g_propsfile->getBoolValue("fftw_allow_long_planning", false);
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    //double t0 = Time::getMillisecondCounterHiRes();
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#if PS_USE_VDSP_FFT
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    int maxlog2N = 1;
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    while ((1 << maxlog2N) < nsamples)
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        ++maxlog2N;
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    log2N = maxlog2N;
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    planfft = vDSP_create_fftsetup(maxlog2N, kFFTRadix2);
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    m_workReal.resize(nsamples,false);
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    m_workImag.resize(nsamples,false);
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    //Logger::writeToLog("fftsize: "  + String(nsamples) + " log2N: " + String(log2N));
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#else
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    if (allow_long_planning)
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    {
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        //fftwf_plan_with_nthreads(2);
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@@ -55,6 +75,8 @@ FFT::FFT(int nsamples_, bool no_inverse)
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        if (no_inverse == false)
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			planifftw=fftwf_plan_r2r_1d(nsamples,data.data(),data.data(),FFTW_HC2R,FFTW_ESTIMATE);
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    }
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#endif
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    //double t1 = Time::getMillisecondCounterHiRes();
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    //Logger::writeToLog("Creating FFTW3 plans took "+String(t1-t0)+ "ms");
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	static int seed = 0;
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@@ -64,46 +86,123 @@ FFT::FFT(int nsamples_, bool no_inverse)
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FFT::~FFT()
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{
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	fftwf_destroy_plan(planfftw);
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#if PS_USE_VDSP_FFT
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    vDSP_destroy_fftsetup((FFTSetup)planfft);
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#else
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    fftwf_destroy_plan(planfftw);
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	if (planifftw!=nullptr)
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		fftwf_destroy_plan(planifftw);
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#endif
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};
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void FFT::smp2freq()
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{
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#if PS_USE_VDSP_FFT
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	for (int i=0;i<nsamples;i++)
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    const int halfsamples = nsamples / 2;
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    COMPLEX_SPLIT A;
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    A.realp = m_workReal.data();
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    A.imagp = m_workImag.data();
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    // apply window
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    //vDSP_vmul(gInFIFO, 1, mWindow, 1, gFFTworksp, 1, fftFrameSize);
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    //convert real input to even-odd
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    vDSP_ctoz((COMPLEX*)smp.data(), 2, &A, 1, halfsamples);
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    //memset(ioData->mBuffers[0].mData, 0, ioData->mBuffers[0].mDataByteSize);
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    // forward fft
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    vDSP_fft_zrip((FFTSetup)planfft, &A, 1, log2N, FFT_FORWARD);
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    // result is in split packed complex A.realp[0] is DC, A.imagp[0] is NY, so we zero NY before doing mag^2
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    A.imagp[0] = 0.0f;
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    //DebugLogC("post fft: %g %g\n", A.realp[fftFrameSize/4], A.imagp[fftFrameSize/4 + 1]);
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    // Absolute square (equivalent to mag^2)
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    vDSP_zvmags(&A, 1, freq.data(), 1, halfsamples);
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    // take square root
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    //vvsqrtf(freq.data(), freq.data(), &halfsamples);
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    for (int i=1; i < halfsamples;i++)
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    {
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        freq[i]=sqrt(freq[i]);
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    }
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    freq[0] = 0.0;
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#else
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    for (int i=0;i<nsamples;i++)
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        data[i]=smp[i];
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	fftwf_execute(planfftw);
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    fftwf_execute(planfftw);
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	for (int i=1;i<nsamples/2;i++)
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    for (int i=1;i<nsamples/2;i++)
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    {
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		REALTYPE c=data[i];
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		REALTYPE s=data[nsamples-i];
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        REALTYPE c=data[i];
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        REALTYPE s=data[nsamples-i];
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		freq[i]=sqrt(c*c+s*s);
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	};
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	freq[0]=0.0;
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        freq[i]=sqrt(c*c+s*s);
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    };
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    freq[0]=0.0;
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#endif
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};
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void FFT::freq2smp()
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{
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	REALTYPE inv_2p15_2pi=1.0f/16384.0f*(float)c_PI;
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	for (int i=1;i<nsamples/2;i++)
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	const REALTYPE inv_2p15_2pi=1.0f/16384.0f*(float)c_PI;
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#if PS_USE_VDSP_FFT
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    const int halfsamples = nsamples / 2;
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    COMPLEX_SPLIT A;
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    A.realp = m_workReal.data();
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    A.imagp = m_workImag.data();
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    for (int i=1;i<nsamples/2;i++)
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    {
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		unsigned int rand = m_randdist(m_randgen);
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        unsigned int rand = m_randdist(m_randgen);
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        REALTYPE phase = rand*inv_2p15_2pi;
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        m_workReal[i] = freq[i]*cos(phase);
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        m_workImag[i] = freq[i]*sin(phase);
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    };
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    m_workReal[0] = m_workImag[0] = 0.0;
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    // inverse fft
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    vDSP_fft_zrip((FFTSetup)planfft, &A, 1, log2N, FFT_INVERSE);
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    // unpack
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    vDSP_ztoc(&A, 1, (COMPLEX*)data.data(), 2, halfsamples);
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    // scale
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    //float scale = 1.f/data[0]; // 1.0f / nsamples  ??
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    float scale = 1.f / nsamples; // 1.0f / nsamples  ??
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    vDSP_vsmul(data.data(), 1, &scale, smp.data(), 1, nsamples);
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#else
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    for (int i=1;i<nsamples/2;i++)
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    {
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        unsigned int rand = m_randdist(m_randgen);
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        REALTYPE phase=rand*inv_2p15_2pi;
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        data[i]=freq[i]*cos(phase);
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        data[nsamples-i]=freq[i]*sin(phase);
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	};
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	data[0]=data[nsamples/2+1]=data[nsamples/2]=0.0;
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	fftwf_execute(planifftw);
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    };
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    data[0]=data[nsamples/2+1]=data[nsamples/2]=0.0;
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    fftwf_execute(planifftw);
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	for (int i=0;i<nsamples;i++)
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        smp[i]=data[i]/nsamples;
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#endif
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};
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void FFT::applywindow(FFTWindow type)
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@@ -129,7 +228,9 @@ void FFT::applywindow(FFTWindow type)
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		};
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	};
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	for (int i=0;i<nsamples;i++) smp[i]*=window.data[i];
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    //for (int i=0;i<nsamples;i++) smp[i]*=window.data[i];
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    FloatVectorOperations::multiply(smp.data(), window.data.data(), nsamples);
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}
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Stretch::Stretch(REALTYPE rap_,int /*bufsize_*/,FFTWindow w,bool bypass_,REALTYPE samplerate_,int /*stereo_mode_*/)
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@@ -160,22 +261,35 @@ void Stretch::set_rap(REALTYPE newrap){
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void Stretch::do_analyse_inbuf(REALTYPE *smps){
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	//get the frequencies
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	for (int i=0;i<bufsize;i++) {
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    FloatVectorOperations::copy(infft->smp.data(), old_smps.data(), bufsize);
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    FloatVectorOperations::copy(infft->smp.data()+bufsize, smps, bufsize);
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    FloatVectorOperations::copy(old_freq.data(), infft->freq.data(), bufsize);
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    /*
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    for (int i=0;i<bufsize;i++) {
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		infft->smp[i]=old_smps[i];
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		infft->smp[i+bufsize]=smps[i];
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		old_freq[i]=infft->freq[i];
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	};
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     */
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	infft->applywindow(window_type);
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	infft->smp2freq();
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};
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void Stretch::do_next_inbuf_smps(REALTYPE *smps){
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	for (int i=0;i<bufsize;i++) {
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    FloatVectorOperations::copy(very_old_smps.data(), old_smps.data(), bufsize);
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    FloatVectorOperations::copy(old_smps.data(), new_smps.data(), bufsize);
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    FloatVectorOperations::copy(new_smps.data(), smps, bufsize);
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    /*
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    for (int i=0;i<bufsize;i++) {
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		very_old_smps[i]=old_smps[i];
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		old_smps[i]=new_smps[i];
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		new_smps[i]=smps[i];
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	};
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     */
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};
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REALTYPE Stretch::do_detect_onset(){
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@@ -249,7 +363,8 @@ REALTYPE Stretch::process(REALTYPE *smps,int nsmps)
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	jassert(bufsize > 0);
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	REALTYPE onset=0.0;
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	if (bypass){
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		for (int i=0;i<bufsize;i++) out_buf[i]=smps[i];
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        //for (int i=0;i<bufsize;i++) out_buf[i]=smps[i];
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        FloatVectorOperations::copy(out_buf.data(), smps, bufsize);
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		return 0.0;
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	};
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@@ -279,13 +394,23 @@ REALTYPE Stretch::process(REALTYPE *smps,int nsmps)
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		//construct the input fft
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		int start_pos=(int)(floor(remained_samples*bufsize));	
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		if (start_pos>=bufsize) start_pos=bufsize-1;
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        FloatVectorOperations::copy(fft->smp.data(), very_old_smps.data() + start_pos, bufsize-start_pos);
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        FloatVectorOperations::copy(fft->smp.data() + (bufsize - start_pos), old_smps.data() , bufsize);
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        FloatVectorOperations::copy(fft->smp.data() + (2*bufsize - start_pos), new_smps.data() , start_pos);
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        /*
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		for (int i=0;i<bufsize-start_pos;i++) fft->smp[i]=very_old_smps[i+start_pos];
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		for (int i=0;i<bufsize;i++) fft->smp[i+bufsize-start_pos]=old_smps[i];
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		for (int i=0;i<start_pos;i++) fft->smp[i+2*bufsize-start_pos]=new_smps[i];
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         */
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		//compute the output spectrum
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		fft->applywindow(window_type);
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		fft->smp2freq();
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		for (int i=0;i<bufsize;i++) outfft->freq[i]=fft->freq[i];
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        //for (int i=0;i<bufsize;i++) outfft->freq[i]=fft->freq[i];
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        FloatVectorOperations::copy(outfft->freq.data(), fft->freq.data(), bufsize);
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@@ -310,7 +435,8 @@ REALTYPE Stretch::process(REALTYPE *smps,int nsmps)
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		};
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		//copy the current output buffer to old buffer
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		for (int i=0;i<bufsize*2;i++) old_out_smps[i]=outfft->smp[i];
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        //for (int i=0;i<bufsize*2;i++) old_out_smps[i]=outfft->smp[i];
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        FloatVectorOperations::copy(old_out_smps.data(), outfft->smp.data(), 2*bufsize);
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	};
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@@ -22,13 +22,20 @@
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#include "globals.h"
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#include "fftw3.h"
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#ifndef PS_USE_VDSP_FFT
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#define PS_USE_VDSP_FFT 0
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#endif
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#if PS_USE_VDSP_FFT
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#else
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#include "fftw3.h"
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#endif
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#include "../JuceLibraryCode/JuceHeader.h"
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#include <random>
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#include <type_traits>
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template<typename T>
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class FFTWBuffer
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{
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@@ -94,19 +101,34 @@ private:
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    int m_size = 0;
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    void mallocimpl(T*& buf,int size)
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    {
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#if PS_USE_VDSP_FFT
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        // malloc aligns properly on vdsp platforms
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        if constexpr (std::is_same<T,float>::value)
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            buf = (float*)malloc(size*sizeof(float));
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        else
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            buf = (double*)malloc(size * sizeof(double));
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#else
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        if constexpr (std::is_same<T,float>::value)
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			buf = (float*)fftwf_malloc(size*sizeof(float));
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		else
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			buf = (double*)fftw_malloc(size * sizeof(double));
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#endif
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    }
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	void freeimpl(T*& buf)
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    {
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        if (buf!=nullptr)
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        {
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#if PS_USE_VDSP_FFT
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			if constexpr (std::is_same<T, float>::value)
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				fftwf_free(buf);
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				free(buf);
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			else
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				fftw_free(buf);
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				free(buf);
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#else
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            if constexpr (std::is_same<T, float>::value)
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                fftwf_free(buf);
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            else
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                fftw_free(buf);
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#endif
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			buf = nullptr;
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        }
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    }
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@@ -132,7 +154,14 @@ class FFT
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 | 
			
		||||
	private:
 | 
			
		||||
 | 
			
		||||
		fftwf_plan planfftw,planifftw;
 | 
			
		||||
#if PS_USE_VDSP_FFT
 | 
			
		||||
        void * planfft;
 | 
			
		||||
        int log2N;
 | 
			
		||||
        FFTWBuffer<REALTYPE> m_workReal;
 | 
			
		||||
        FFTWBuffer<REALTYPE> m_workImag;
 | 
			
		||||
#else
 | 
			
		||||
        fftwf_plan planfftw,planifftw;
 | 
			
		||||
#endif
 | 
			
		||||
        FFTWBuffer<REALTYPE> data;
 | 
			
		||||
		
 | 
			
		||||
		struct{
 | 
			
		||||
 
 | 
			
		||||
							
								
								
									
										71
									
								
								Source/power.svg
									
									
									
									
									
										Normal file
									
								
							
							
						
						
									
										71
									
								
								Source/power.svg
									
									
									
									
									
										Normal file
									
								
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										Normal file
									
								
							
							
						
						
									
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@@ -15,28 +15,6 @@
 | 
			
		||||
              jucerFormatVersion="1" useAppConfig="0" defines="JUCE_USE_CUSTOM_PLUGIN_STANDALONE_APP=1">
 | 
			
		||||
  <MAINGROUP id="nozXHl" name="PaulXStretch">
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		||||
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		||||
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 | 
			
		||||
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		||||
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 | 
			
		||||
      <FILE id="EUS9Ff" name="CustomStandaloneFilterWindow.h" compile="0"
 | 
			
		||||
            resource="0" file="Source/CustomStandaloneFilterWindow.h"/>
 | 
			
		||||
      <FILE id="rHA1fu" name="CustomLookAndFeel.cpp" compile="1" resource="0"
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		||||
            file="Source/CustomLookAndFeel.cpp"/>
 | 
			
		||||
      <FILE id="Y4DgKq" name="CustomLookAndFeel.h" compile="0" resource="0"
 | 
			
		||||
            file="Source/CustomLookAndFeel.h"/>
 | 
			
		||||
      <FILE id="zvau5B" name="CrossPlatformUtils.h" compile="0" resource="0"
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		||||
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 | 
			
		||||
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		||||
            file="Source/CrossPlatformUtilsMac.mm"/>
 | 
			
		||||
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		||||
            file="Source/RenderSettingsComponent.cpp"/>
 | 
			
		||||
      <FILE id="Mz5aVb" name="envelope_component.cpp" compile="1" resource="0"
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		||||
            file="Source/envelope_component.cpp"/>
 | 
			
		||||
      <FILE id="apM6W6" name="envelope_component.h" compile="0" resource="0"
 | 
			
		||||
            file="Source/envelope_component.h"/>
 | 
			
		||||
      <FILE id="qfCc8R" name="jcdp_envelope.h" compile="0" resource="0" file="Source/jcdp_envelope.h"/>
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		||||
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		||||
@@ -51,26 +29,51 @@
 | 
			
		||||
        <FILE id="a7ur6I" name="StretchSource.cpp" compile="1" resource="0"
 | 
			
		||||
              file="Source/PS_Source/StretchSource.cpp"/>
 | 
			
		||||
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 | 
			
		||||
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		||||
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 | 
			
		||||
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		||||
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 | 
			
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 | 
			
		||||
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		||||
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 | 
			
		||||
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		||||
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 | 
			
		||||
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 | 
			
		||||
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 | 
			
		||||
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 | 
			
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 | 
			
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 | 
			
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 | 
			
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 | 
			
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 | 
			
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		||||
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<key>ITSAppUsesNonExemptEncryption</key>
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<key>UIStatusBarHidden</key>
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			<key>CFBundleTypeRole</key>
			<string>Viewer</string>
			<key>LSHandlerRank</key>
			<string>Owner</string>
			<key>LSItemContentTypes</key>
			<array>
				<string>com.microsoft.waveform-audio</string>
				<string>public.aiff-audio</string>
				<string>com.apple.coreaudio-format</string>
				<string>public.mpeg-4-audio</string>
				<string>public.mp3</string>
			</array>
		</dict>
		</array>

</dict>
</plist>"
 | 
			
		||||
                  UIFileSharingEnabled="1" UISupportsDocumentBrowser="1">
 | 
			
		||||
                  UIFileSharingEnabled="1" UISupportsDocumentBrowser="1" extraDefs="PS_USE_VDSP_FFT=1">
 | 
			
		||||
      <CONFIGURATIONS>
 | 
			
		||||
        <CONFIGURATION isDebug="1" name="Debug" headerPath="Source/PS_Source
Source/WDL
${HOME}/iosstatic/include"
 | 
			
		||||
                       libraryPath="${HOME}/iosstatic/lib
"/>
 | 
			
		||||
 
 | 
			
		||||
		Reference in New Issue
	
	Block a user