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Click-free polarity inversion, also use accelerated (AVX, SSE) Amp

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This commit is contained in:
Robin Gareus 2017-10-31 22:21:12 +01:00
parent 466cbecaba
commit c411e05b6f
2 changed files with 11 additions and 11 deletions
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1
libs/ardour/ardour/polarity_processor.h
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@ -43,6 +43,7 @@ protected:
private:
boost::shared_ptr<PhaseControl> _control;
std::vector<gain_t> _current_gain;
};
}

21
libs/ardour/polarity_processor.cc
View file

@ -16,9 +16,11 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "ardour/amp.h"
#include "ardour/audio_buffer.h"
#include "ardour/phase_control.h"
#include "ardour/polarity_processor.h"
#include "ardour/session.h"
#include "pbd/i18n.h"
@ -45,29 +47,26 @@ PolarityProcessor::configure_io (ChanCount in, ChanCount out)
return false;
}
_current_gain.resize (in.n_audio (), 0.f);
return Processor::configure_io (in, out);
}
void
PolarityProcessor::run (BufferSet& bufs, samplepos_t /*start_sample*/, samplepos_t /*end_sample*/, double /*speed*/, pframes_t nframes, bool)
{
int chn = 0;
if (!_active && !_pending_active) {
/* fade all to unity */
for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i, ++chn) {
_current_gain[chn] = Amp::apply_gain (*i, _session.nominal_sample_rate(), nframes, _current_gain[chn], 1.0);
}
return;
}
_active = _pending_active;
if (_control->none()) {
return;
}
int chn = 0;
for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i, ++chn) {
Sample* const sp = i->data();
if (_control->inverted (chn)) {
for (pframes_t nx = 0; nx < nframes; ++nx) {
sp[nx] = -sp[nx];
}
}
_current_gain[chn] = Amp::apply_gain (*i, _session.nominal_sample_rate(), nframes, _current_gain[chn], _control->inverted (chn) ? -1.f : 1.f);
}
}