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#include "MIDIPlayer.h"
#include <signal.h>
#include <iostream>
namespace bp = boost::process;
namespace fs = std::filesystem;
MIDIPlayer::MIDIPlayer(const std::filesystem::path& path):
m_child{},
m_dir{path},
m_file{}
{
std::vector<std::string> list = get_filelist();
if (list.size() > 0) {
m_file = list[0];
}
}
void MIDIPlayer::start()
{
if (m_child.valid() && m_child.running()) {
stop();
} else {
m_child = bp::child("aplaymidi -p24 locked_out_of_heaven.midi");//, bp::std_out > bp::null);
}
}
void MIDIPlayer::stop()
{
// note:: m_child.terminate() would kill via SIGKILL, preventing note offs
if (m_child.valid()) {
int result = kill(m_child.native_handle(), SIGTERM);
if (result < 0) {
std::cerr << "Error in MIDIPlayer::stop(): kill() unsuccessful\n";
}
}
}
bool MIDIPlayer::is_playing()
{
if (!m_child.valid()) {
return false;
}
return m_child.running();
}
void MIDIPlayer::set_file(const std::string& filename)
{
m_file = filename;
}
std::string MIDIPlayer::get_file()
{
return m_file;
}
std::vector<std::string> MIDIPlayer::get_filelist()
{
std::vector<std::string> result;
for (auto const& dir_entry: fs::directory_iterator{m_dir}) {
fs::path entry{dir_entry.path()};
fs::path extension = entry.extension();
if (extension == ".midi" || extension == ".mid") {
result.push_back(entry.filename());
}
if (result.size() == 99) {
break;
}
}
return result;
}
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