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public class Dino.Plugins.Rtp.VideoWidget : Gtk.Bin, Dino.Plugins.VideoCallWidget {
private static uint last_id = 0;
public uint id { get; private set; }
public Gst.Element element { get; private set; }
public Gtk.Widget widget { get; private set; }
public Plugin plugin { get; private set; }
public Gst.Pipeline pipe { get {
return plugin.pipe;
}}
private bool attached;
private Device? connected_device;
private Gst.Element? connected_device_element;
private Stream? connected_stream;
private Gst.Element prepare;
public VideoWidget(Plugin plugin) {
this.plugin = plugin;
id = last_id++;
element = Gst.ElementFactory.make("gtksink", @"video_widget_$id");
if (element != null) {
Gtk.Widget widget;
element.@get("widget", out widget);
element.@set("async", false);
element.@set("sync", false);
this.widget = widget;
add(widget);
widget.visible = true;
} else {
warning("Could not create GTK video sink. Won't display videos.");
}
size_allocate.connect_after(after_size_allocate);
}
public void input_caps_changed(GLib.Object pad, ParamSpec spec) {
Gst.Caps? caps = (pad as Gst.Pad).caps;
if (caps == null) return;
int width, height;
caps.get_structure(0).get_int("width", out width);
caps.get_structure(0).get_int("height", out height);
resolution_changed(width, height);
}
public void after_size_allocate(Gtk.Allocation allocation) {
if (prepare != null) {
Gst.Element crop = ((Gst.Bin)prepare).get_by_name(@"video_widget_$(id)_crop");
if (crop != null) {
Value ratio = new Value(typeof(Gst.Fraction));
Gst.Value.set_fraction(ref ratio, allocation.width, allocation.height);
crop.set_property("aspect-ratio", ratio);
}
}
}
public void display_stream(Xmpp.Xep.JingleRtp.Stream stream, Xmpp.Jid jid) {
if (element == null) return;
detach();
if (stream.media != "video") return;
connected_stream = stream as Stream;
if (connected_stream == null) return;
plugin.pause();
pipe.add(element);
prepare = Gst.parse_bin_from_description(@"aspectratiocrop aspect-ratio=4/3 name=video_widget_$(id)_crop ! videoconvert name=video_widget_$(id)_convert", true);
prepare.name = @"video_widget_$(id)_prepare";
prepare.get_static_pad("sink").notify["caps"].connect(input_caps_changed);
pipe.add(prepare);
connected_stream.add_output(prepare);
prepare.link(element);
element.set_locked_state(false);
plugin.unpause();
attached = true;
}
public void display_device(MediaDevice media_device) {
if (element == null) return;
detach();
connected_device = media_device as Device;
if (connected_device == null) return;
plugin.pause();
pipe.add(element);
prepare = Gst.parse_bin_from_description(@"aspectratiocrop aspect-ratio=4/3 name=video_widget_$(id)_crop ! videoflip method=horizontal-flip name=video_widget_$(id)_flip ! videoconvert name=video_widget_$(id)_convert", true);
prepare.name = @"video_widget_$(id)_prepare";
prepare.get_static_pad("sink").notify["caps"].connect(input_caps_changed);
pipe.add(prepare);
connected_device_element = connected_device.link_source();
connected_device_element.link(prepare);
prepare.link(element);
element.set_locked_state(false);
plugin.unpause();
attached = true;
}
public void detach() {
if (element == null) return;
if (attached) {
if (connected_stream != null) {
connected_stream.remove_output(prepare);
connected_stream = null;
}
if (connected_device != null) {
connected_device_element.unlink(element);
connected_device_element = null;
connected_device.unlink();
connected_device = null;
}
prepare.set_locked_state(true);
prepare.set_state(Gst.State.NULL);
pipe.remove(prepare);
prepare = null;
element.set_locked_state(true);
element.set_state(Gst.State.NULL);
pipe.remove(element);
attached = false;
}
}
public override void dispose() {
detach();
widget = null;
element = null;
}
}
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