diff options
Diffstat (limited to 'externals/grill/fftease/src/ether~.cpp')
-rw-r--r-- | externals/grill/fftease/src/ether~.cpp | 160 |
1 files changed, 8 insertions, 152 deletions
diff --git a/externals/grill/fftease/src/ether~.cpp b/externals/grill/fftease/src/ether~.cpp index 12a0d359..e04efaec 100644 --- a/externals/grill/fftease/src/ether~.cpp +++ b/externals/grill/fftease/src/ether~.cpp @@ -13,41 +13,21 @@ WARRANTIES, see the file, "license.txt," in this distribution. #include <stdlib.h> class ether: - public flext_dsp + public fftease { - FLEXT_HEADER_S(ether,flext_dsp,setup) + FLEXT_HEADER_S(ether,fftease,setup) public: ether(I argc,const t_atom *argv); - ~ether(); protected: - virtual V m_dsp(I n,S *const *in,S *const *out); - virtual V m_signal(I n,S *const *in,S *const *out); - - I blsz; - F smprt; - - F *_input1,*_input2; - F *_buffer1,*_buffer2; - F *_channel1,*_channel2; - F *_output; - F *_trigland; - I *_bitshuffle; - F *_Wanal,*_Wsyn,*_Hwin; - - I _inCount,_nmult; - - // ----------------------------- + virtual V Transform(I n,S *const *in); BL _qual,_invert; F _threshMult; private: - V Clear(); - V Delete(); - static V setup(t_classid c); @@ -66,7 +46,7 @@ V ether::setup(t_classid c) ether::ether(I argc,const t_atom *argv): - blsz(0),smprt(0), + fftease(2,true,true,true), _qual(false),_threshMult(0),_invert(false) { /* parse and set object's options given */ @@ -77,131 +57,21 @@ ether::ether(I argc,const t_atom *argv): post("%s - Quality must be a boolean value - set to %0i",thisName(),_qual?1:0); } - _nmult = _qual?4:2; - - Clear(); + _mult = _qual?4:2; + _window = _qual; AddInSignal("Messages and input signal"); AddInSignal("Reference signal"); AddOutSignal("Transformed signal"); } -ether::~ether() -{ - Delete(); -} - -V ether::Clear() -{ - _input1 = _input2 = NULL; - _buffer1 = _buffer2 = NULL; - _channel1 = _channel2 = NULL; - _output = NULL; - - _bitshuffle = NULL; - _trigland = NULL; - - _Hwin = NULL; - _Wanal = _Wsyn = NULL; - - // ----------------------------- -} - -V ether::Delete() -{ - if(_input1) delete[] _input1; - if(_buffer1) delete[] _buffer1; - if(_channel1) delete[] _channel1; - - if(_input2) delete[] _input2; - if(_buffer2) delete[] _buffer2; - if(_channel2) delete[] _channel2; - - if(_output) delete[] _output; - - if(_bitshuffle) delete[] _bitshuffle; - if(_trigland) delete[] _trigland; - - if(_Wanal) delete[] _Wanal; - if(_Wsyn) delete[] _Wsyn; - if(_Hwin) delete[] _Hwin; - - // ----------------------------- - -} - - -V ether::m_dsp(I n,S *const *,S *const *) -{ - const I _D = n; - const F _R = Samplerate(); - - if(_D != blsz || _R != smprt) { - blsz = _D; - smprt = _R; - - Delete(); - // --------------------------------------------- - - const int _N = _D*_nmult,_Nw = _N,_Nw2 = _Nw>>1,_N2 = _N>>1; - - _inCount = -_Nw; - - _input1 = new F[_Nw]; - _buffer1 = new F[_N]; - _channel1 = new F[_N+2]; - - _input2 = new F[_Nw]; - _buffer2 = new F[_N]; - _channel2 = new F[_N+2]; - - _output = new F[_Nw]; - - _bitshuffle = new I[_N*2]; - _trigland = new F[_N*2]; - - _Wanal = new F[_Nw]; - _Wsyn = new F[_Nw]; - _Hwin = new F[_Nw]; - - init_rdft( _N, _bitshuffle, _trigland); - - if(_qual) - makewindows( _Hwin, _Wanal, _Wsyn, _Nw, _N, _D, 0); - else - makehanning( _Hwin, _Wanal, _Wsyn, _Nw, _N, _D, 0,0); - } -} -V ether::m_signal(I n,S *const *in,S *const *out) +V ether::Transform(I _N2,S *const *in) { - /* declare working variables */ - I i, j; - const I _D = n,_N = _D*_nmult,_Nw = _N,_N2 = _N/2,_Nw2 = _Nw/2; - - _inCount += _D; - - for ( j = 0 ; j < _N-_D ; j++ ) { - _input1[j] = _input1[j+_D]; - _input2[j] = _input2[j+_D]; - } - for (i = 0; j < _N; j++,i++ ) { - _input1[j] = in[0][i]; - _input2[j] = in[1][i]; - } - - fold( _input1, _Wanal, _Nw, _buffer1, _N, _inCount ); - fold( _input2, _Wanal, _Nw, _buffer2, _N, _inCount ); - - rdft( _N, 1, _buffer1, _bitshuffle, _trigland ); - rdft( _N, 1, _buffer2, _bitshuffle, _trigland ); - - // ---- BEGIN -------------------------------- - F threshMult = _threshMult; if (threshMult == 0. ) threshMult = 1; - for ( i = 0; i <= _N2; i++ ) { + for (I i = 0; i <= _N2; i++ ) { int even = i<<1,odd = even + 1; /* convert to polar coordinates from complex values */ @@ -233,19 +103,5 @@ V ether::m_signal(I n,S *const *in,S *const *out) if (i != _N2 ) _buffer1[odd] = -_channel1[even] * sin( _channel1[odd] ); } - - // ---- END -------------------------------- - - rdft( _N, -1, _buffer1, _bitshuffle, _trigland ); - overlapadd( _buffer1, _N, _Wsyn, _output, _Nw, _inCount); - - const F mult = 1./_N; - for ( j = 0; j < _D; j++ ) - out[0][j] = _output[j] * mult; - - for ( j = 0; j < _N-_D; j++ ) - _output[j] = _output[j+_D]; - for (; j < _N; j++ ) - _output[j] = 0.; } |