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/*
cw_binaural~: a binaural synthesis external for pure data
by David Doukhan - david.doukhan@gmail.com - http://perso.limsi.fr/doukhan
and Anne Sedes - sedes.anne@gmail.com
Copyright (C) 2009-2011 David Doukhan and Anne Sedes
For more details, see CW_binaural~, a binaural synthesis external for Pure Data
David Doukhan and Anne Sedes, PDCON09
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <m_pd.h> //needed for fft implementation
#include "spectral_hrtfcont.hpp"
#include "flyweight_ir_factory.hpp"
SpectralHrtfCont::SpectralHrtfCont(const ir_key& k):
HrtfCont(k)
{
ir_key k2 = k;
// length is twice the impulse response considered
_ir_length = k.length * 2;
// FIXME: IR size verification ??? => power of 2
// get the container storing the coresponding temporal impulse response
k2.spectral = false;
HrtfCont* hc = FlyweightIrFactory::instance()->hrtf_set_get(k2);
// iterate on the container storing the temporal impulse response
for (angle1_cit ie = hc->map_get()->begin(); ie != hc->map_get()->end(); ie++)
for (angle2_cit ia2 = ie->second.begin(); ia2 != ie->second.end(); ia2++)
{
// current azimuth and elevation
const float el = ie->first;
const float az = ia2->first;
// allocate buffers
float *lbuf = _m[el][az].lbuf = new float[_ir_length];
float *rbuf = _m[el][az].rbuf = new float[_ir_length];
// fill buffers
for (size_t i = 0; i < k.length; ++i)
{
lbuf[i] = ia2->second.lbuf[i];
rbuf[i] = ia2->second.rbuf[i];
lbuf[i+k.length] = rbuf[i+k.length] = 0;
}
// apply fft to the buffers
mayer_realfft(_ir_length, lbuf);
mayer_realfft(_ir_length, rbuf);
}
}
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