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/* Copyright (c) 2016 Stanislaw Halik
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#include "video-property-page.hpp"
#ifdef _WIN32
#include "camera-names.hpp"
#include "compat/sleep.hpp"
#include "compat/run-in-thread.hpp"
#include "compat/library-path.hpp"
#include <cstring>
#include <opencv2/videoio.hpp>
#include <QApplication>
#include <QProcess>
#include <QThread>
#include <QMessageBox>
#include <QDebug>
bool video_property_page::show_from_capture(cv::VideoCapture& cap, int /*index */)
{
return cap.set(cv::CAP_PROP_SETTINGS, 0);
}
struct prop_settings_worker final : QThread
{
explicit prop_settings_worker(int idx);
~prop_settings_worker() override;
private:
void open_prop_page();
void run() override;
cv::VideoCapture cap;
int idx = -1;
};
prop_settings_worker::prop_settings_worker(int idx_)
{
int ret = (int)cap.get(cv::CAP_PROP_SETTINGS);
if (ret != 0)
run_in_thread_async(qApp, [] {
QMessageBox::warning(nullptr,
"Camera properties",
"Camera dialog already opened",
QMessageBox::Cancel,
QMessageBox::NoButton);
});
else
{
idx = idx_;
// DON'T MOVE IT
// ps3 eye will reset to default settings if done from another thread
open_prop_page();
}
}
void prop_settings_worker::open_prop_page()
{
cap.open(idx);
if (cap.isOpened())
{
cv::Mat tmp;
for (unsigned k = 0; k < 2000/50; k++)
{
if (cap.read(tmp))
{
qDebug() << "got frame" << tmp.rows << tmp.cols;
goto ok;
}
portable::sleep(50);
}
}
qDebug() << "property-page: can't open camera";
idx = -1;
return;
ok:
portable::sleep(100);
qDebug() << "property-page: opening for" << idx;
if (!cap.set(cv::CAP_PROP_SETTINGS, 0))
{
run_in_thread_async(qApp, [] {
QMessageBox::warning(nullptr,
"Camera properties",
"Can't open camera dialog",
QMessageBox::Cancel,
QMessageBox::NoButton);
});
}
}
prop_settings_worker::~prop_settings_worker()
{
if (idx != -1)
{
// ax filter is race condition-prone
portable::sleep(250);
cap.release();
// idem
portable::sleep(250);
qDebug() << "property-page: closed" << idx;
}
}
void prop_settings_worker::run()
{
if (idx != -1)
{
while (cap.get(cv::CAP_PROP_SETTINGS) > 0)
portable::sleep(1000);
}
}
bool video_property_page::show(int idx)
{
auto thread = new prop_settings_worker(idx);
// XXX is this a race condition?
thread->moveToThread(qApp->thread());
QObject::connect(thread, &QThread::finished, qApp, [thread] { thread->deleteLater(); }, Qt::DirectConnection);
thread->start();
return true;
}
#elif defined(__linux)
# include <QProcess>
# include "compat/camera-names.hpp"
bool video_property_page::show(int idx)
{
const QList<QString> camera_names(get_camera_names());
if (idx >= 0 && idx < camera_names.size())
return QProcess::startDetached("qv4l2", QStringList { "-d", QString("/dev/video%1").arg(idx) });
else
return false;
}
bool video_property_page::show_from_capture(cv::VideoCapture&, int idx)
{
return show(idx);
}
#else
bool video_property_page::show(int) { return false; }
bool video_property_page::show_from_capture(cv::VideoCapture&, int) { return false; }
#endif
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