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gtk-clutter-app.c
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gtk-clutter-app.c
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#include <gst/gst.h>
#include <gtk/gtk.h>
#include <gst/interfaces/xoverlay.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <clutter-gst/clutter-gst.h>
#include <clutter-gtk/clutter-gtk.h>
#include <clutter/clutter.h>
#include <clutter/x11/clutter-x11.h>
#include "app.h"
typedef struct windows_s {
GstElement *sinks[2];
ClutterActor *stages[2];
XID windows[2];
int n;
} windows_t;
static void
bus_call(GstBus * bus, GstMessage *msg, gpointer data)
{
windows_t *w = (windows_t *)data;
if (GST_MESSAGE_TYPE(msg) == GST_MESSAGE_ELEMENT &&
gst_structure_has_name(msg->structure, "prepare-xwindow-id")){
g_print("Got prepare-xwindow-id msg\n");
for (int i = 0; i < 2; i++){
clutter_x11_set_stage_foreign(CLUTTER_STAGE(w->stages[i]), w->windows[i]);
}
}
}
static void
toggle_fullscreen(GtkWidget *widget){
GdkWindowState state = gdk_window_get_state(GDK_WINDOW(widget->window));
if (state == GDK_WINDOW_STATE_FULLSCREEN){
gtk_window_unfullscreen(GTK_WINDOW(widget));
}
else{
gtk_window_fullscreen(GTK_WINDOW(widget));
}
}
static gboolean
key_press_event_cb(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
g_print("got key %c\n", event->keyval);
switch (event->keyval){
case 'f':
toggle_fullscreen(widget);
break;
case 'q':
g_signal_emit_by_name(widget, "destroy");
break;
default:
break;
}
return TRUE;
}
void destroy_cb(GtkWidget * widget, gpointer data)
{
GMainLoop *loop = (GMainLoop*) data;
g_print("Window destroyed\n");
g_main_loop_quit(loop);
}
static void
video_widget_realize_cb (GtkWidget * widget, gpointer data)
{
windows_t *w = (windows_t *)data;
if (w->n < 2){
w->windows[w->n] = GDK_WINDOW_XID(GDK_WINDOW(widget->window));
}
else {
g_print("wtf, there seem to be %d windows!\n", w->n);
}
w->n++;
return;
}
static void
set_up_window(GMainLoop *loop, GtkWidget *window){
static const GdkColor black = {0, 0, 0, 0};
gtk_window_set_default_size(GTK_WINDOW(window), WIDTH, HEIGHT);
//gtk_window_fullscreen(GTK_WINDOW(widget));
//GdkScreen *screen = gdk_display_get_screen(0|1);
//gtk_window_set_screen(GTK_WINDOW(window), screen);
// attach key press signal to key press callback
gtk_widget_set_events(window, GDK_KEY_PRESS_MASK);
g_signal_connect(G_OBJECT(window), "key-press-event", G_CALLBACK(key_press_event_cb), NULL);
g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(destroy_cb), loop);
gtk_widget_modify_bg(window, GTK_STATE_NORMAL, &black);
gtk_widget_show_all(window);
}
ClutterActor *
new_stage(void){
static const ClutterColor black = {0, 0, 0, 255};
ClutterActor *stage = clutter_stage_get_default();
clutter_stage_set_color(CLUTTER_STAGE(stage), &black);
clutter_stage_set_fullscreen(CLUTTER_STAGE(stage), TRUE);
clutter_stage_hide_cursor(CLUTTER_STAGE(stage));
return stage;
}
gint main (gint argc, gchar *argv[])
{
/* initialization */
gst_init (&argc, &argv);
gtk_init(&argc, &argv);
clutter_init(&argc, &argv);
/* herein we count windows and map them to sinks */
windows_t windows;
windows.n = 0;
GMainLoop *loop = g_main_loop_new(NULL, FALSE);
GtkWidget *window1 = gtk_window_new(GTK_WINDOW_TOPLEVEL);
GtkWidget *window2 = gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect (window1, "realize",
G_CALLBACK (video_widget_realize_cb), &windows);
g_signal_connect (window2, "realize",
G_CALLBACK (video_widget_realize_cb), &windows);
/* Make a timeline */
ClutterTimeline *timeline = clutter_timeline_new(1000);
g_object_set(timeline, "loop", TRUE, NULL);
ClutterActor *stage1 = new_stage();
ClutterTexture *texture1 = g_object_new (CLUTTER_TYPE_TEXTURE,
"sync-size", FALSE,
"disable-slicing", TRUE,
NULL);
GstElement *sink1 = clutter_gst_video_sink_new(CLUTTER_TEXTURE(texture1));
ClutterActor *stage2 = new_stage();
ClutterTexture *texture2 = g_object_new (CLUTTER_TYPE_TEXTURE,
"sync-size", FALSE,
"disable-slicing", TRUE,
NULL);
GstElement *sink2 = clutter_gst_video_sink_new(CLUTTER_TEXTURE(texture2));
/*To avoid flickering on show, you should call gtk_widget_show() or
gtk_widget_realize() before calling clutter_actor_show() */
//GstElement *sink1 = gst_element_factory_make("ximagesink", "sink1");
//GstElement *sink2 = gst_element_factory_make("ximagesink", "sink2");
GstElement *pipeline = (GstElement *)make_dual_pipeline(sink1, sink2);
windows.sinks[0] = sink1;
windows.sinks[1] = sink2;
windows.stages[0] = stage1;
windows.stages[1] = stage2;
set_up_window(loop, window1);
set_up_window(loop, window2);
GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(pipeline));
gst_bus_add_watch(bus, (GstBusFunc)bus_call, &windows);
gst_object_unref(bus);
gst_element_set_state(pipeline, GST_STATE_PLAYING);
/* start the timeline */
clutter_timeline_start(timeline);
clutter_group_add(CLUTTER_GROUP(stage1), texture1);
clutter_group_add(CLUTTER_GROUP(stage2), texture2);
clutter_actor_show_all(stage1);
clutter_actor_show_all(stage2);
g_main_loop_run(loop);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
return 0;
}