mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-10-01 01:26:06 -04:00
109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
/*
|
|
* Copyright (C) 2016 Jared Boone, ShareBrained Technology, Inc.
|
|
* Copyright (C) 2018 Furrtek
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include "proc_capture.hpp"
|
|
|
|
#include "dsp_fir_taps.hpp"
|
|
|
|
#include "event_m4.hpp"
|
|
|
|
#include "utility.hpp"
|
|
|
|
CaptureProcessor::CaptureProcessor() {
|
|
decim_0.configure(taps_200k_decim_0.taps, 33554432);
|
|
decim_1.configure(taps_200k_decim_1.taps, 131072);
|
|
|
|
channel_spectrum.set_decimation_factor(1);
|
|
}
|
|
|
|
void CaptureProcessor::execute(const buffer_c8_t& buffer) {
|
|
/* 2.4576MHz, 2048 samples */
|
|
const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
|
|
const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);
|
|
const auto& decimator_out = decim_1_out;
|
|
const auto& channel = decimator_out;
|
|
|
|
if( stream ) {
|
|
const size_t bytes_to_write = sizeof(*decimator_out.p) * decimator_out.count;
|
|
const auto result = stream->write(decimator_out.p, bytes_to_write);
|
|
}
|
|
|
|
feed_channel_stats(channel);
|
|
|
|
spectrum_samples += channel.count;
|
|
if( spectrum_samples >= spectrum_interval_samples ) {
|
|
spectrum_samples -= spectrum_interval_samples;
|
|
channel_spectrum.feed(channel, channel_filter_low_f, channel_filter_high_f, channel_filter_transition);
|
|
}
|
|
}
|
|
|
|
void CaptureProcessor::on_message(const Message* const message) {
|
|
switch(message->id) {
|
|
case Message::ID::UpdateSpectrum:
|
|
case Message::ID::SpectrumStreamingConfig:
|
|
channel_spectrum.on_message(message);
|
|
break;
|
|
|
|
case Message::ID::SamplerateConfig:
|
|
samplerate_config(*reinterpret_cast<const SamplerateConfigMessage*>(message));
|
|
break;
|
|
|
|
case Message::ID::CaptureConfig:
|
|
capture_config(*reinterpret_cast<const CaptureConfigMessage*>(message));
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void CaptureProcessor::samplerate_config(const SamplerateConfigMessage& message) {
|
|
baseband_fs = message.sample_rate;
|
|
baseband_thread.set_sampling_rate(baseband_fs);
|
|
|
|
size_t decim_0_output_fs = baseband_fs / decim_0.decimation_factor;
|
|
|
|
size_t decim_1_input_fs = decim_0_output_fs;
|
|
size_t decim_1_output_fs = decim_1_input_fs / decim_1.decimation_factor;
|
|
|
|
channel_filter_low_f = taps_200k_decim_1.low_frequency_normalized * decim_1_input_fs;
|
|
channel_filter_high_f = taps_200k_decim_1.high_frequency_normalized * decim_1_input_fs;
|
|
channel_filter_transition = taps_200k_decim_1.transition_normalized * decim_1_input_fs;
|
|
|
|
spectrum_interval_samples = decim_1_output_fs / spectrum_rate_hz;
|
|
spectrum_samples = 0;
|
|
}
|
|
|
|
void CaptureProcessor::capture_config(const CaptureConfigMessage& message) {
|
|
if( message.config ) {
|
|
stream = std::make_unique<StreamInput>(message.config);
|
|
} else {
|
|
stream.reset();
|
|
}
|
|
}
|
|
|
|
int main() {
|
|
EventDispatcher event_dispatcher { std::make_unique<CaptureProcessor>() };
|
|
event_dispatcher.run();
|
|
return 0;
|
|
}
|