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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* chresampler.h
*
* Tue Sep 23 20:42:14 CEST 2014
* Copyright 2014 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.
*/
#pragma once
#include <memory>
#include <config.h>
#include <array>
//! Channel resampler class using either zita-resampler or secret rabbit code
//! (really!!) depending on the value of the WITH_RESAMPLER macro.
//! If WITH_RESAMPLER is unset the resampler is disabled entirely.
//! If WITH_RESAMPLER=="zita" zita-resampler will be used.
//! If WITH_RESAMPLER=="src" Secret Rabbit Code will be used.
class CHResampler
{
public:
CHResampler();
~CHResampler();
void setup(double input_fs, double output_fs);
void setInputSamples(float* samples, std::size_t count);
void setOutputSamples(float* samples, std::size_t count);
void process();
std::size_t getLatency() const;
std::size_t getInputSampleCount() const;
std::size_t getOutputSampleCount() const;
double getRatio() const;
#ifdef WITH_RESAMPLER
private:
class Prv;
std::unique_ptr<Prv> prv;
double input_fs{44100.0};
double output_fs{44100.0};
#endif /*WITH_RESAMPLER*/
};
//! Container class for the resampler array.
class Resamplers
{
public:
void setup(double input_fs, double output_fs)
{
for(auto& resampler : resamplers)
{
resampler.setup(input_fs, output_fs);
}
}
bool isActive() const
{
return getRatio() != 1.0;
}
double getRatio() const
{
return resamplers[0].getRatio();
}
CHResampler& operator[](std::size_t idx)
{
return resamplers[idx];
}
std::size_t getOutputSampleCount() const
{
return resamplers[0].getOutputSampleCount();
}
std::size_t getLatency() const
{
return resamplers[0].getLatency();
}
std::array<CHResampler, 64> resamplers;
};
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