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/* -*- Mode: c++ -*- */
/***************************************************************************
* doubletriggerfilter.cc
*
* Fri Jun 5 18:26:32 CEST 2020
* Copyright 2020 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* DrumGizmo 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "doubletriggerfilter.h"
#include "latencyfilter.h"
#include <cmath>
#include <hugin.hpp>
#include "settings.h"
#include "random.h"
DoubleTriggerFilter::DoubleTriggerFilter(Settings& settings)
: settings(settings)
{
lastStrokes.resize(127, 0.0); // initialise to all zeros
}
template<typename T1, typename T2>
static T1 getDistanceSamples(T1 min_dist_ms, T2 samplerate)
{
return min_dist_ms * samplerate / 1000.;
}
bool DoubleTriggerFilter::filter(event_t& event, std::size_t pos)
{
auto enabled = true;//settings.enable_latency_modifier.load();
auto min_dist_ms = 25.0;//settings.latency_max_ms.load();
auto samplerate = settings.samplerate.load();
if(!enabled)
{
return true;
}
auto min_dist = getDistanceSamples(min_dist_ms, samplerate);
double note_pos = pos + event.offset;
if(event.instrument >= lastStrokes.size())
{
lastStrokes.resize(event.instrument, 0.0); // expand and initialise to zeros
}
auto lastStroke = lastStrokes[event.instrument];
if((note_pos - lastStroke) > min_dist)
{
lastStrokes[event.instrument] = note_pos;
return true;
}
return false;
}
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