mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
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e43f814861
* Analog TV app (PAL) * Icon on main menu * Analog TV should be yellow Works for PAL only know, it would be nice to add NTSC in the future, or some customizable sync
87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2016 Furrtek
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* Copyright (C) 2020 Shao
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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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#include "proc_am_tv.hpp"
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#include "portapack_shared_memory.hpp"
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#include "dsp_fft.hpp"
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#include "event_m4.hpp"
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#include <cstdint>
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void WidebandFMAudio::execute(const buffer_c8_t& buffer) {
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if( !configured ) {
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return;
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}
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std::fill(spectrum.begin(), spectrum.end(), 0);
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for(size_t i=0; i<spectrum.size(); i++) {
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spectrum[i] += buffer.p[i];
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}
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const buffer_c16_t buffer_c16 {spectrum.data(),spectrum.size(),buffer.sampling_rate};
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channel_spectrum.feed(buffer_c16);
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int8_t re, im;
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int8_t mag;
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for (size_t i = 0; i < 128; i++)
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{
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re = buffer.p[i].real();
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im = buffer.p[i].imag();
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mag = __builtin_sqrtf((re * re) + (im * im)) ;
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const unsigned int v = re + 127.0f; //timescope
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audio_spectrum.db[i] = std::max(0U, std::min(255U, v));
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}
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AudioSpectrumMessage message { &audio_spectrum };
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shared_memory.application_queue.push(message);
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}
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void WidebandFMAudio::on_message(const Message* const message) {
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switch(message->id) {
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case Message::ID::UpdateSpectrum:
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case Message::ID::SpectrumStreamingConfig:
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channel_spectrum.on_message(message);
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break;
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case Message::ID::WFMConfigure:
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configure(*reinterpret_cast<const WFMConfigureMessage*>(message));
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break;
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default:
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break;
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}
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}
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void WidebandFMAudio::configure(const WFMConfigureMessage& message) {
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configured = true;
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}
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int main() {
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EventDispatcher event_dispatcher { std::make_unique<WidebandFMAudio>() };
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event_dispatcher.run();
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return 0;
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}
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