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#include "MainLoop.h"
#include "Timer.h"
#include "config.h"
#include "log.h"
#include <chrono>
#include <cmath>
#include <cstdint>
#include <exception>
#include <iostream>
#include <limits>
#include <memory>
#include <stdexcept>
#include <stdio.h>
#include <sys/types.h>
#include <sys/time.h>
#include <time.h>
#include <signal.h>
using namespace std::chrono_literals;
using namespace std::string_literals;
namespace bp = boost::process;
MainLoop::MainLoop(int argc, char** argv):
m_status{},
m_config{argc, argv},
m_note_click{m_config},
m_clock_click{},
m_internal_click{m_config},
m_midi{},
m_pcm{m_config},
m_ui{m_config}
{
m_status.add(LED{"/sys/class/leds/ACT", "/sys/class/leds/PWR"});
m_status.add(LED{"/sys/class/leds/thingm1:green:led1", "/sys/class/leds/thingm1:red:led1"});
start_fcgi();
}
MainLoop::~MainLoop()
{
stop_fcgi();
}
void MainLoop::start_fcgi()
{
m_child_fcgi = bp::child("spawn-fcgi -a 127.0.0.1 -p 9090 -n -- ./click-fcgi");
if (!m_child_fcgi.valid() || !m_child_fcgi.running()) {
throw std::runtime_error("click-fcgi not started");
}
}
void MainLoop::stop_fcgi()
{
if (m_child_fcgi.valid()) {
m_child_fcgi.terminate();
}
}
bool run_flag = true;
void signal_handler(int) {
run_flag = false;
std::cout << "Signal received. Terminating." << std::endl;
}
void MainLoop::reconfigure_mode() {
debug_cout << "reconfiguring mode" << std::endl;
m_click_connection.disconnect();
int mode = m_config.get_mode();
if (mode == 0) {
m_click_connection = m_note_click.signal_click.connect([&](){m_pcm.click({});});
} else if (mode == 1) {
m_click_connection = m_clock_click.signal_click.connect([&](){m_pcm.click({});});
} else if (mode == 2) {
m_click_connection = m_internal_click.signal_click.connect([&](std::chrono::duration<double> offset){m_pcm.click(offset);});
} else {
log_cout << fmt::format("Error: Unknown mode: {}", mode) << std::endl;
}
}
int MainLoop::run()
{
try {
signal(SIGTERM, signal_handler);
signal(SIGINT, signal_handler);
//debug_cout.activate();
log_cout.activate();
log_cout.log_lines(log_lines);
m_pcm.write();
Timer timer_50ms(50ms, true);
timer_50ms.start();
Timer timer_500ms(500ms, true);
timer_500ms.start();
Timer timer_10min(10min, true);
timer_10min.start();
// Main signals
boost::signals2::signal<void()> signal_count_loops;
//
// Signal-Slot Connections:
//
m_midi.signal_note.connect([&](int channel, int note, uint64_t timestamp){m_note_click.receive_note(channel, note, timestamp);});
//m_click_connection = m_note_click.signal_click.connect([&](){m_pcm.click(0);});
reconfigure_mode();
m_note_click.signal_bpm.connect([&](int bpm){m_ui.slot_note_bpm(bpm);});
m_clock_click.signal_bpm.connect([&](int bpm){m_ui.slot_clock_bpm(bpm);});
m_midi.signal_active_sensing.connect([&](){m_ui.slot_active_sensing();});
timer_500ms.elapsed.connect([&](){m_ui.draw();});
signal_count_loops.connect([&](){m_ui.count_main_loops();});
m_midi.signal_count_events.connect([&](size_t size){m_ui.count_midi_events(size);});
timer_10min.elapsed.connect([&](){m_config.persist();});
m_midi.signal_note.connect([&](int channel, int note, uint64_t timestamp){m_ui.slot_midi_note(channel, note, timestamp);});
m_midi.signal_clock.connect([&](){m_clock_click.receive_clock();});
m_config.signal_mode.connect([&](int mode){reconfigure_mode();});
timer_50ms.elapsed.connect([&](){m_internal_click.run_cyclic_50ms();});
m_midi.flush();
while (run_flag) {
debug_cout << "Main loop entered." << std::endl;
signal_count_loops();
fd_set read_set;
FD_ZERO(&read_set);
FD_SET(m_midi.fd(), &read_set);
FD_SET(0, &read_set);
if constexpr (0) {
// PCM fd almost always writeable: for single frames at high speed
fd_set write_set;
FD_ZERO(&write_set);
FD_SET(m_pcm.fd(), &write_set);
}
struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = 20000;
int result = select(FD_SETSIZE, &read_set, nullptr/*&write_set*/, nullptr, &timeout);
if (result < 0) {
throw std::runtime_error("select() failed");
} else if (result == 0) {
debug_cout << "select() timeout" << std::endl;
}
while (m_midi.event_ready())
{
//std::cout << "read..." << std::endl;
auto event = m_midi.read();
//std::cout << "process..." << std::endl;
m_midi.process(event);
}
if (m_pcm.write_available()) {
//std::cout << "DEBUG: WRITE" << std::endl;
m_pcm.write();
}
while (m_ui.key_available()) {
m_ui.handle_input();
}
// handle timers, TODO: make updates more efficient at scale
timer_50ms.update();
timer_500ms.update();
timer_10min.update();
}
return 0;
} catch (const std::exception& ex) {
std::cerr << "Error: " << ex.what() << std::endl;
m_status.setMode(StatusLED::Mode::Error);
return 1;
}
}
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