/* * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc. * * 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 __PROC_AM_AUDIO_H__ #define __PROC_AM_AUDIO_H__ #include "baseband_processor.hpp" #include "dsp_decimate.hpp" #include "dsp_demodulate.hpp" #include "spectrum_collector.hpp" #include class NarrowbandAMAudio : public BasebandProcessor { public: void execute(const buffer_c8_t& buffer) override; void on_message(const Message* const message) override; private: std::array dst; const buffer_c16_t dst_buffer { dst.data(), dst.size() }; const buffer_f32_t work_audio_buffer { (float*)dst.data(), sizeof(dst) / sizeof(float) }; dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0; dsp::decimate::FIRC16xR16x32Decim8 decim_1; dsp::decimate::FIRAndDecimateComplex channel_filter; uint32_t channel_filter_pass_f; uint32_t channel_filter_stop_f; dsp::demodulate::AM demod; SpectrumCollector channel_spectrum; bool configured { false }; void configure(const AMConfigureMessage& message); }; #endif/*__PROC_AM_AUDIO_H__*/