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extern crate gstreamer as gst;
use gst::prelude::*;
extern crate glib;
extern crate gio;
use gio::prelude::*;
extern crate gtk;
use gtk::prelude::*;
use std::cell::RefCell;
use std::env;
fn create_ui(app: &gtk::Application) {
let pipeline = gst::Pipeline::new(None);
let src = gst::ElementFactory::make("videotestsrc", None).unwrap();
let (sink, widget) = if let Some(gtkglsink) = gst::ElementFactory::make("gtkglsink", None) {
let glsinkbin = gst::ElementFactory::make("glsinkbin", None).unwrap();
glsinkbin
.set_property("sink", &gtkglsink.to_value())
.unwrap();
let widget = gtkglsink.get_property("widget").unwrap();
(glsinkbin, widget.get::<gtk::Widget>().unwrap())
} else {
let sink = gst::ElementFactory::make("gtksink", None).unwrap();
let widget = sink.get_property("widget").unwrap();
(sink, widget.get::<gtk::Widget>().unwrap())
};
pipeline.add_many(&[&src, &sink]).unwrap();
src.link(&sink).unwrap();
let window = gtk::Window::new(gtk::WindowType::Toplevel);
window.set_default_size(320, 240);
let vbox = gtk::Box::new(gtk::Orientation::Vertical, 0);
vbox.pack_start(&widget, true, true, 0);
let label = gtk::Label::new("Position: 00:00:00");
vbox.pack_start(&label, true, true, 5);
window.add(&vbox);
window.show_all();
app.add_window(&window);
let pipeline_weak = pipeline.downgrade();
let timeout_id = gtk::timeout_add(500, move || {
let pipeline = match pipeline_weak.upgrade() {
Some(pipeline) => pipeline,
None => return glib::Continue(true),
};
let position = pipeline
.query_position::<gst::ClockTime>()
.unwrap_or_else(|| 0.into());
label.set_text(&format!("Position: {:.0}", position));
glib::Continue(true)
});
let app_weak = app.downgrade();
window.connect_delete_event(move |_, _| {
let app = match app_weak.upgrade() {
Some(app) => app,
None => return Inhibit(false),
};
app.quit();
Inhibit(false)
});
let bus = pipeline.get_bus().unwrap();
let ret = pipeline.set_state(gst::State::Playing);
assert_ne!(ret, gst::StateChangeReturn::Failure);
let app_weak = glib::SendWeakRef::from(app.downgrade());
bus.add_watch(move |_, msg| {
use gst::MessageView;
let app = match app_weak.upgrade() {
Some(app) => app,
None => return glib::Continue(false),
};
match msg.view() {
MessageView::Eos(..) => gtk::main_quit(),
MessageView::Error(err) => {
println!(
"Error from {:?}: {} ({:?})",
err.get_src().map(|s| s.get_path_string()),
err.get_error(),
err.get_debug()
);
app.quit();
}
_ => (),
};
glib::Continue(true)
});
// Pipeline reference is owned by the closure below, so will be
// destroyed once the app is destroyed
let timeout_id = RefCell::new(Some(timeout_id));
app.connect_shutdown(move |_| {
let ret = pipeline.set_state(gst::State::Null);
assert_ne!(ret, gst::StateChangeReturn::Failure);
bus.remove_watch();
if let Some(timeout_id) = timeout_id.borrow_mut().take() {
glib::source_remove(timeout_id);
}
});
}
fn main() {
gst::init().unwrap();
gtk::init().unwrap();
let app = gtk::Application::new(None, gio::ApplicationFlags::FLAGS_NONE).unwrap();
app.connect_activate(create_ui);
let args = env::args().collect::<Vec<_>>();
app.run(&args);
}