mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-14 12:08:40 +00:00
97 lines
1.9 KiB
C++
97 lines
1.9 KiB
C++
|
/*
|
||
|
* Copyright (C) 2020 Belousov Oleg
|
||
|
*
|
||
|
* This file is part of PortaPack.
|
||
|
*
|
||
|
* 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, 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; see the file COPYING. If not, write to
|
||
|
* the Free Software Foundation, Inc., 51 Franklin Street,
|
||
|
* Boston, MA 02110-1301, USA.
|
||
|
*/
|
||
|
|
||
|
#ifndef __DSP_MODULATE_H__
|
||
|
#define __DSP_MODULATE_H__
|
||
|
|
||
|
#include "dsp_types.hpp"
|
||
|
#include "dsp_hilbert.hpp"
|
||
|
|
||
|
namespace dsp {
|
||
|
namespace modulate {
|
||
|
|
||
|
enum class Mode {
|
||
|
None,
|
||
|
AM,
|
||
|
DSB,
|
||
|
LSB,
|
||
|
USB,
|
||
|
FM
|
||
|
};
|
||
|
|
||
|
///
|
||
|
|
||
|
class Modulator {
|
||
|
public:
|
||
|
virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer) = 0;
|
||
|
virtual ~Modulator();
|
||
|
|
||
|
Mode get_mode();
|
||
|
void set_mode(Mode new_mode);
|
||
|
|
||
|
void set_over(uint32_t new_over);
|
||
|
|
||
|
protected:
|
||
|
uint32_t over = 1;
|
||
|
Mode mode = Mode::None;
|
||
|
};
|
||
|
|
||
|
///
|
||
|
|
||
|
class SSB : public Modulator {
|
||
|
public:
|
||
|
SSB();
|
||
|
|
||
|
virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer);
|
||
|
|
||
|
private:
|
||
|
dsp::HilbertTransform hilbert;
|
||
|
};
|
||
|
|
||
|
///
|
||
|
|
||
|
class FM : public Modulator {
|
||
|
public:
|
||
|
FM();
|
||
|
|
||
|
virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer);
|
||
|
void set_fm_delta(uint32_t new_delta);
|
||
|
|
||
|
///
|
||
|
|
||
|
private:
|
||
|
uint32_t fm_delta { 0 };
|
||
|
uint32_t phase { 0 }, sphase { 0 };
|
||
|
int32_t sample { 0 }, delta { };
|
||
|
};
|
||
|
|
||
|
class AM : public Modulator {
|
||
|
public:
|
||
|
AM();
|
||
|
|
||
|
virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer);
|
||
|
};
|
||
|
|
||
|
} /* namespace modulate */
|
||
|
} /* namespace dsp */
|
||
|
|
||
|
#endif/*__DSP_MODULATE_H__*/
|