76 lines
1.6 KiB
C++
76 lines
1.6 KiB
C++
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/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __DSP_DEMODULATE_H__
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#define __DSP_DEMODULATE_H__
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#include "dsp_types.hpp"
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namespace dsp {
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namespace demodulate {
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class AM {
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public:
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buffer_f32_t execute(
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const buffer_c16_t& src,
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const buffer_f32_t& dst
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);
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private:
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static constexpr float k = 1.0f / 32768.0f;
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};
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class SSB {
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public:
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buffer_f32_t execute(
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const buffer_c16_t& src,
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const buffer_f32_t& dst
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);
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private:
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static constexpr float k = 1.0f / 32768.0f;
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};
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class FM {
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public:
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buffer_f32_t execute(
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const buffer_c16_t& src,
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const buffer_f32_t& dst
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);
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buffer_s16_t execute(
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const buffer_c16_t& src,
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const buffer_s16_t& dst
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);
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void configure(const float sampling_rate, const float deviation_hz);
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private:
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complex16_t::rep_type z_ { 0 };
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float kf { 0 };
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float ks16 { 0 };
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};
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} /* namespace demodulate */
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} /* namespace dsp */
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#endif/*__DSP_DEMODULATE_H__*/
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