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#if !VALA_0_52
[CCode (cheader_filename = "gst/gst.h")]
private static extern void gst_value_set_fraction(ref GLib.Value value, int numerator, int denominator);
#endif
public class Dino.Plugins.Rtp.VideoWidget : Gtk.Bin, Dino.Plugins.VideoCallWidget {
private const int RECAPS_AFTER_CHANGE = 5;
private static uint last_id = 0;
public uint id { get; private set; }
public Gst.Base.Sink sink { 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;
private Gst.Caps last_input_caps;
private Gst.Caps last_caps;
private int recaps_since_change;
public VideoWidget(Plugin plugin) {
this.plugin = plugin;
id = last_id++;
sink = Gst.ElementFactory.make("gtksink", @"video_widget_$id") as Gst.Base.Sink;
if (sink != null) {
Gtk.Widget widget;
sink.@get("widget", out widget);
sink.@set("async", false);
sink.@set("sync", true);
sink.@set("ignore-alpha", false);
this.widget = widget;
this.widget.draw.connect_after(fix_caps_issues);
add(widget);
widget.visible = true;
} else {
warning("Could not create GTK video sink. Won't display videos.");
}
size_allocate.connect_after(after_size_allocate);
}
public void input_caps_changed(GLib.Object pad, ParamSpec spec) {
Gst.Caps? caps = ((Gst.Pad)pad).caps;
if (caps == null) {
debug("Input: No caps");
return;
}
int width, height;
caps.get_structure(0).get_int("width", out width);
caps.get_structure(0).get_int("height", out height);
debug("Input resolution changed: %ix%i", width, height);
resolution_changed(width, height);
last_input_caps = caps;
}
public void processed_input_caps_changed(GLib.Object pad, ParamSpec spec) {
Gst.Caps? caps = ((Gst.Pad)pad).caps;
if (caps == null) {
debug("Processed input: No caps");
return;
}
int width, height;
caps.get_structure(0).get_int("width", out width);
caps.get_structure(0).get_int("height", out height);
debug("Processed resolution changed: %ix%i", width, height);
sink.set_caps(caps);
last_caps = caps;
recaps_since_change = 0;
}
public void after_size_allocate(Gtk.Allocation allocation) {
if (prepare != null) {
Gst.Element crop = ((Gst.Bin)prepare).get_by_name(@"video_widget_$(id)_crop");
if (crop != null) {
int output_width = allocation.width;
int output_height = allocation.height;
int target_num, target_den;
if (last_input_caps != null) {
int input_width, input_height;
last_input_caps.get_structure(0).get_int("width", out input_width);
last_input_caps.get_structure(0).get_int("height", out input_height);
double target_ratio = 3.0/2.0;
double ratio = (double)(output_width*input_height)/(double)(input_width*output_height);
if (ratio > target_ratio) {
target_num = (int)((double)input_width * target_ratio);
target_den = input_height;
sink.@set("force-aspect-ratio", true);
} else if (ratio < 1.0/target_ratio) {
target_num = input_width;
target_den = (int)((double)input_height * target_ratio);;
sink.@set("force-aspect-ratio", true);
} else {
target_num = output_width;
target_den = output_height;
sink.@set("force-aspect-ratio", false);
}
} else {
target_num = output_width;
target_den = output_height;
sink.@set("force-aspect-ratio", false);
}
Value ratio = Value(typeof(Gst.Fraction));
#if VALA_0_52
Gst.Value.set_fraction(ref ratio, target_num, target_den);
#else
gst_value_set_fraction(ref ratio, target_num, target_den);
#endif
crop.set_property("aspect-ratio", ratio);
}
}
}
public bool fix_caps_issues() {
// FIXME: Detect if draw would fail and do something better
if (last_caps != null && recaps_since_change++ < RECAPS_AFTER_CHANGE) {
Gst.Caps? temp = last_caps.copy();
temp.set_simple("width", typeof(int), 1, "height", typeof(int), 1, null);
sink.set_caps(temp);
sink.set_caps(last_caps);
}
return false;
}
public void display_stream(Xmpp.Xep.JingleRtp.Stream stream, Xmpp.Jid jid) {
if (sink == null) return;
detach();
if (stream.media != "video") return;
connected_stream = stream as Stream;
if (connected_stream == null) return;
plugin.pause();
pipe.add(sink);
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_$(id)_prepare";
prepare.get_static_pad("sink").notify["caps"].connect(input_caps_changed);
prepare.get_static_pad("src").notify["caps"].connect(processed_input_caps_changed);
pipe.add(prepare);
connected_stream.add_output(prepare);
prepare.link(sink);
sink.set_locked_state(false);
plugin.unpause();
attached = true;
}
public void display_device(MediaDevice media_device) {
if (sink == null) return;
detach();
connected_device = media_device as Device;
if (connected_device == null) return;
plugin.pause();
pipe.add(sink);
prepare = Gst.parse_bin_from_description(@"aspectratiocrop aspect-ratio=4/3 name=video_widget_$(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(sink);
sink.set_locked_state(false);
plugin.unpause();
attached = true;
}
public void detach() {
if (sink == null) return;
if (attached) {
if (connected_stream != null) {
connected_stream.remove_output(prepare);
connected_stream = null;
}
if (connected_device != null) {
connected_device_element.unlink(sink);
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;
sink.set_locked_state(true);
sink.set_state(Gst.State.NULL);
pipe.remove(sink);
attached = false;
}
}
public override void dispose() {
detach();
widget = null;
sink = null;
}
}
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