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/*
* Copyright (C) 2012 Hermann Meyer, Andreas Degert, Pete Shorthose
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
* --------------------------------------------------------------------------
*/
#pragma once
#ifndef SRC_HEADERS_GX_RESAMPLER_H_
#define SRC_HEADERS_GX_RESAMPLER_H_
#include <zita-resampler/resampler.h>
#include <assert.h>
namespace gx_resample
{
#define MAX_UPSAMPLE 8
class SimpleResampler
{
private:
Resampler r_up, r_down;
int m_fact;
public:
SimpleResampler(): r_up(), r_down(), m_fact() {}
void setup(int sampleRate, unsigned int fact);
void up(int count, float *input, float *output);
void down(int count, float *input, float *output);
};
class BufferResampler: Resampler
{
public:
float *process(int fs_inp, int ilen, float *input, int fs_outp, int* olen);
};
class StreamingResampler: Resampler
{
private:
int ratio_a;
int ratio_b;
public:
bool setup(int srcRate, int dstRate, int nchan);
int get_max_out_size(int i_size)
{
return (i_size * ratio_b) / ratio_a + 1;
}
int process(int count, float *input, float *output);
int flush(float *output); // check source for max. output size
};
}
#endif // SRC_HEADERS_GX_RESAMPLER_H_