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Analog tv app (#334)

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* 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
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Erwin Ried 2020-04-20 06:50:24 +02:00 • committed by GitHub
parent 40531e9230
commit e43f814861
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firmware/baseband/proc_am_tv.cpp Normal file
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/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2016 Furrtek
* Copyright (C) 2020 Shao
*
* 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_am_tv.hpp"
#include "portapack_shared_memory.hpp"
#include "dsp_fft.hpp"
#include "event_m4.hpp"
#include <cstdint>
void WidebandFMAudio::execute(const buffer_c8_t& buffer) {
if( !configured ) {
return;
}
std::fill(spectrum.begin(), spectrum.end(), 0);
for(size_t i=0; i<spectrum.size(); i++) {
spectrum[i] += buffer.p[i];
}
const buffer_c16_t buffer_c16 {spectrum.data(),spectrum.size(),buffer.sampling_rate};
channel_spectrum.feed(buffer_c16);
int8_t re, im;
int8_t mag;
for (size_t i = 0; i < 128; i++)
{
re = buffer.p[i].real();
im = buffer.p[i].imag();
mag = __builtin_sqrtf((re * re) + (im * im)) ;
const unsigned int v = re + 127.0f; //timescope
audio_spectrum.db[i] = std::max(0U, std::min(255U, v));
}
AudioSpectrumMessage message { &audio_spectrum };
shared_memory.application_queue.push(message);
}
void WidebandFMAudio::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::WFMConfigure:
configure(*reinterpret_cast<const WFMConfigureMessage*>(message));
break;
default:
break;
}
}
void WidebandFMAudio::configure(const WFMConfigureMessage& message) {
configured = true;
}
int main() {
EventDispatcher event_dispatcher { std::make_unique<WidebandFMAudio>() };
event_dispatcher.run();
return 0;
}