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Diffstat (limited to 'src/sndobj/PVS.cpp')
| -rw-r--r-- | src/sndobj/PVS.cpp | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/src/sndobj/PVS.cpp b/src/sndobj/PVS.cpp deleted file mode 100644 index d38f4e5..0000000 --- a/src/sndobj/PVS.cpp +++ /dev/null @@ -1,168 +0,0 @@ - -//////////////////////////////////////////////////////////////////////// -// This file is part of the SndObj library -// -// This program is free software; you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation; either version 2 of the License, or -// (at your option) any later version. -// -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program; if not, write to the Free Software -// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -// -// Copyright (c)Victor Lazzarini, 1997-2004 -// See License.txt for a disclaimer of all warranties -// and licensing information - -///////////////////////////////////////////////// -// PVS.cpp : Phase Vocoder Synthesis Class -// -// Victor Lazzarini, 2003 -// -///////////////////////////////////////////////// -#include "PVS.h" - - -PVS::PVS(){ - m_rotcount = m_vecsize; - m_phases = new double[m_halfsize]; - memset(m_phases, 0, sizeof(double)*m_halfsize); - m_factor = (m_hopsize*TWOPI)/m_sr; - m_first = true; -} - -PVS::PVS(Table* window, SndObj* input, int fftsize, - int hopsize, double sr) - :IFFT(window, input,fftsize,hopsize,sr) -{ - m_rotcount = m_vecsize; - if(m_halfsize){ - m_phases = new double[m_halfsize]; - memset(m_phases, 0, sizeof(double)*m_halfsize); - } - m_factor = (m_hopsize*TWOPI)/m_sr; - m_first = true; -} - -PVS::~PVS(){ - if(m_halfsize) - delete[] m_phases; -} - - -int -PVS::Set(char* mess, double value){ - - switch(FindMsg(mess)){ - - case 22: - SetFFTSize((int) value); - return 1; - - case 23: - SetHopSize((int) value); - return 1; - - default: - return IFFT::Set(mess, value); - - } -} - -void -PVS::SetFFTSize(int fftsize){ - m_rotcount = m_vecsize; - IFFT::SetFFTSize(fftsize); -} - -void -PVS::SetHopSize(int hopsize){ - m_rotcount = m_vecsize; - m_factor = (m_hopsize*TWOPI)/m_sr; - IFFT::SetFFTSize(hopsize); -} - -void -PVS::pvsynthesis(double* signal){ - double pha; - int i2; - - m_ffttmp[0] = m_input->Output(0); - m_ffttmp[m_halfsize] = m_input->Output(1); - - for(int i=0;i<m_fftsize; i+=2){ - i2 = i/2; - m_phases[i2] += m_input->Output(i+1) - m_fund*i2; - pha = m_phases[i2]*m_factor; - m_ffttmp[i2] = m_input->Output(i)*cos(pha); - m_ffttmp[m_fftsize-(i2)] = m_input->Output(i)*sin(pha); - } - - rfftw_one(m_plan, m_ffttmp, signal); -} - - -short -PVS::DoProcess(){ - if(!m_error){ - if(m_input){ - if(m_enable){ - int i; double out = 0.; - // phase vocoder synthesis - - if(m_first) { - for(m_vecpos = 0; m_vecpos < m_vecsize; m_vecpos++) - m_output[m_vecpos] = 0.f; - } else { - pvsynthesis(m_sigframe[m_cur]); - } - - // set the current signal frame to the next - // one in the circular list - m_counter[m_cur] = 0; - m_cur++; if(m_cur==m_frames) m_cur = 0; - - - for(m_vecpos = 0; m_vecpos < m_vecsize; m_vecpos++){ - // overlap-add the time-domain signal frames - // also make sure the frames are unrotated - for(i=0; i < m_frames; i++){ - out += m_sigframe[i][m_rotcount]*m_table->Lookup(m_counter[i]); - m_counter[i]++; - } - m_rotcount++; - // output it. - m_output[m_vecpos] = (double) out; - out = 0.; - } - m_rotcount %= m_fftsize; - m_first = false; - return 1; - } else { // if disabled - for(m_vecpos = 0; m_vecpos < m_vecsize; m_vecpos++) - m_output[m_vecpos] = 0.f; - m_first = true; - return 1; - } - } else { - m_error = 3; - return 0; - } - } - else - return 0; -} - - - - - - - - |