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12dbf957b3
* working_x32_Capture_till_75Khz * format issues * apply better accurate comments * auto format issues
90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
/*
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* Copyright (C) 2016 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2018 Furrtek
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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 __PROC_CAPTURE_HPP__
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#define __PROC_CAPTURE_HPP__
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#include "baseband_processor.hpp"
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#include "baseband_thread.hpp"
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#include "rssi_thread.hpp"
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#include "dsp_decimate.hpp"
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#include "spectrum_collector.hpp"
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#include "stream_input.hpp"
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#include <array>
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#include <memory>
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class CaptureProcessor : public BasebandProcessor {
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public:
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CaptureProcessor();
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void execute(const buffer_c8_t& buffer) override;
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void on_message(const Message* const message) override;
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private:
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size_t baseband_fs = 3072000; // aka: sample_rate
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static constexpr auto spectrum_rate_hz = 50.0f;
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std::array<complex16_t, 512> dst{};
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const buffer_c16_t dst_buffer{
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dst.data(),
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dst.size()};
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/* NB: There are two decimation passes: 0 and 1. In pass 0, one of
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* the following will be selected based on the oversample rate.
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* use decim_0_4 for an overall decimation factor of 8.
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* use decim_0_8 for an overall decimation factor of 16. */
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dsp::decimate::FIRC8xR16x24FS4Decim4 decim_0_4{};
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dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0_8{};
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dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0_8_180k{};
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dsp::decimate::FIRC16xR16x16Decim2 decim_1_2{};
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dsp::decimate::FIRC16xR16x32Decim8 decim_1_8{};
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int32_t channel_filter_low_f = 0;
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int32_t channel_filter_high_f = 0;
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int32_t channel_filter_transition = 0;
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std::unique_ptr<StreamInput> stream{};
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SpectrumCollector channel_spectrum{};
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size_t spectrum_interval_samples = 0;
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size_t spectrum_samples = 0;
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OversampleRate oversample_rate{OversampleRate::x8};
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/* NB: Threads should be the last members in the class definition. */
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BasebandThread baseband_thread{
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baseband_fs, this, baseband::Direction::Receive, /*auto_start*/ false};
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RSSIThread rssi_thread{};
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void sample_rate_config(const SampleRateConfigMessage& message);
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void capture_config(const CaptureConfigMessage& message);
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/* Dispatch to the correct decim_0 based on oversample rate. */
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buffer_c16_t decim_0_execute(const buffer_c8_t& src, const buffer_c16_t& dst);
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/* Dispatch to the correct decim_1 based on oversample rate. */
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buffer_c16_t decim_1_execute(const buffer_c16_t& src, const buffer_c16_t& dst);
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};
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#endif /*__PROC_CAPTURE_HPP__*/
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