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https://github.com/portapack-mayhem/mayhem-firmware.git
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de81156223
* Advanced draft decim /4 just waterfall ok * apply some Kall's corrections + formatting * Tidy up both decim_factors * New refine optimizations * Format issues * more format issues ...mmmm * comments update * WIP Cleanup * WIP * WIP - add variant * Use std::visit to dispatch MultiDecimator -- fluent API * Clean up comments * Merge next and fix compilation * Fix odd loop in BlockDecimator * Clean up spectrum math * Descibe spectrum update math better, more clear math. * Apply spectrum interval correction at 1.5M * Increase replay buffer to handle x4 ovs --------- Co-authored-by: Brumi-2021 <ea3hqj@gmail.com>
134 lines
4.0 KiB
C++
134 lines
4.0 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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#include <tuple>
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#include <variant>
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/* A decimator that just returns the source buffer. */
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class NoopDecim {
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public:
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static constexpr int decimation_factor = 1;
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template <typename Buffer>
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Buffer execute(const Buffer& src, const Buffer&) {
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// TODO: should this copy to 'dst'?
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return {src.p, src.count, src.sampling_rate};
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}
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};
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/* Decimator wrapper that can hold one of a set of decimators and dispatch at runtime. */
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template <typename... Args>
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class MultiDecimator {
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public:
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/* Dispatches to the underlying type's execute. */
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template <typename Source, typename Destination>
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Destination execute(
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const Source& src,
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const Destination& dst) {
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return std::visit(
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[&src, &dst](auto&& arg) -> Destination {
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return arg.execute(src, dst);
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},
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decimator_);
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}
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size_t decimation_factor() const {
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return std::visit(
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[](auto&& arg) -> size_t {
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return arg.decimation_factor;
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},
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decimator_);
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}
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/* Sets this decimator to a new instance of the specified decimator type.
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* NB: The instance is returned by-ref so 'configure' can easily be called. */
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template <typename Decimator>
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Decimator& set() {
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decimator_ = Decimator{};
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return std::get<Decimator>(decimator_);
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}
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private:
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std::variant<Args...> decimator_{};
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};
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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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/* The actual type will be configured depending on the sample rate. */
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MultiDecimator<
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dsp::decimate::FIRC8xR16x24FS4Decim4,
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dsp::decimate::FIRC8xR16x24FS4Decim8>
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decim_0{};
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MultiDecimator<
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dsp::decimate::FIRC16xR16x16Decim2,
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dsp::decimate::FIRC16xR16x32Decim8,
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NoopDecim>
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decim_1{};
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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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/* 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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};
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#endif /*__PROC_CAPTURE_HPP__*/
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