91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
/*
|
|
* Copyright (C) 2015 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.
|
|
*/
|
|
|
|
#include "proc_wideband_spectrum.hpp"
|
|
|
|
#include "event_m4.hpp"
|
|
|
|
#include <cstdint>
|
|
#include <cstddef>
|
|
|
|
#include <array>
|
|
|
|
void WidebandSpectrum::execute(const buffer_c8_t& buffer) {
|
|
// 2048 complex8_t samples per buffer.
|
|
// 102.4us per buffer. 20480 instruction cycles per buffer.
|
|
|
|
if (!configured) return;
|
|
|
|
if( phase == 0 ) {
|
|
std::fill(spectrum.begin(), spectrum.end(), 0);
|
|
}
|
|
|
|
for(size_t i=0; i<spectrum.size(); i++) {
|
|
// TODO: Removed window-presum windowing, due to lack of available code RAM.
|
|
// TODO: Apply window to improve spectrum bin sidelobes.
|
|
spectrum[i] += buffer.p[i + 0];
|
|
spectrum[i] += buffer.p[i + 1024];
|
|
}
|
|
|
|
if( phase == trigger ) {
|
|
const buffer_c16_t buffer_c16 {
|
|
spectrum.data(),
|
|
spectrum.size(),
|
|
buffer.sampling_rate
|
|
};
|
|
channel_spectrum.feed(
|
|
buffer_c16,
|
|
0, 0, 0
|
|
);
|
|
phase = 0;
|
|
} else {
|
|
phase++;
|
|
}
|
|
}
|
|
|
|
void WidebandSpectrum::on_message(const Message* const msg) {
|
|
const WidebandSpectrumConfigMessage message = *reinterpret_cast<const WidebandSpectrumConfigMessage*>(msg);
|
|
|
|
switch(msg->id) {
|
|
case Message::ID::UpdateSpectrum:
|
|
case Message::ID::SpectrumStreamingConfig:
|
|
channel_spectrum.on_message(msg);
|
|
break;
|
|
|
|
case Message::ID::WidebandSpectrumConfig:
|
|
baseband_fs = message.sampling_rate;
|
|
trigger = message.trigger;
|
|
baseband_thread.set_sampling_rate(baseband_fs);
|
|
phase = 0;
|
|
configured = true;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
int main() {
|
|
EventDispatcher event_dispatcher { std::make_unique<WidebandSpectrum>() };
|
|
event_dispatcher.run();
|
|
return 0;
|
|
}
|