[195/906] fix gstgldifferencematte and add an example app to test it dragging an image over the video (works with pixbufoverlay too, see pixbufdrop --help)

1 files changed, 278 insertions, 0 deletions

diff --git a/tests/examples/gtk/fxtest/pixbufdrop.c b/tests/examples/gtk/fxtest/pixbufdrop.c
new file mode 100644
index 000000000..df99dfa72
--- /dev/null
+++ b/tests/examples/gtk/fxtest/pixbufdrop.c
@@ -0,0 +1,278 @@
+#include <gst/gst.h>
+#include <gtk/gtk.h>
+#include <gdk/gdk.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gdk/gdkx.h>
+#include <gst/interfaces/xoverlay.h>
+
+static gint delay = 0;
+static gint saveddelay = 0;
+static gint method = 1;
+
+struct _SourceData
+{
+  gpointer data;
+  gpointer nick;
+  gpointer value;
+};
+typedef struct _SourceData SourceData;
+
+static GstBusSyncReply 
+create_window (GstBus *bus, GstMessage *message, GtkWidget *widget)
+{
+    // ignore anything but 'prepare-xwindow-id' element messages
+    if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
+        return GST_BUS_PASS;
+
+    if (!gst_structure_has_name (message->structure, "prepare-xwindow-id"))
+        return GST_BUS_PASS;
+
+#ifdef WIN32
+    gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (GST_MESSAGE_SRC (message)),
+        reinterpret_cast<gulong>GDK_WINDOW_HWND(widget->window));
+#else
+    gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (GST_MESSAGE_SRC (message)),
+        GDK_WINDOW_XWINDOW(widget->window));
+#endif
+
+    gst_message_unref (message);
+
+    return GST_BUS_DROP;
+}
+
+static gboolean 
+expose_cb(GtkWidget *widget, GdkEventExpose *event, GstElement *videosink)
+{
+    gst_x_overlay_expose (GST_X_OVERLAY (videosink));
+    return FALSE;
+}
+
+static void
+destroy_cb (GtkWidget *widget, GdkEvent *event, GstElement *pipeline)
+{
+  g_message ("destroy callback");
+
+  gst_element_set_state (pipeline, GST_STATE_NULL);
+  gst_object_unref (pipeline);
+
+  gtk_main_quit ();
+}
+
+gboolean
+play_cb (GtkWidget * widget, gpointer data)
+{
+  g_message ("playing");
+  gst_element_set_state (GST_ELEMENT (data), GST_STATE_PLAYING);
+  return FALSE;
+}
+
+gboolean
+null_cb (GtkWidget * widget, gpointer data)
+{
+  g_message ("nulling");
+  gst_element_set_state (GST_ELEMENT (data), GST_STATE_NULL);
+  return FALSE;
+}
+
+gboolean
+ready_cb (GtkWidget * widget, gpointer data)
+{
+  g_message ("readying");
+  gst_element_set_state (GST_ELEMENT (data), GST_STATE_READY);
+  return FALSE;
+}
+
+gboolean
+pause_cb (GtkWidget * widget, gpointer data)
+{
+  g_message ("pausing");
+  gst_element_set_state (GST_ELEMENT (data), GST_STATE_PAUSED);
+  return FALSE;
+}
+
+static gboolean
+set_location_delayed (gpointer data)
+{
+  SourceData *sdata = (SourceData *) data;
+  delay--;
+  g_print ("%d\n", delay);
+  if (delay > 0) {
+    return TRUE;
+  }
+  g_object_set (G_OBJECT (sdata->data), sdata->nick, sdata->value, NULL);
+  delay = saveddelay;
+  return FALSE;
+}
+
+static void
+on_drag_data_received (GtkWidget * widget,
+                       GdkDragContext * context, int x, int y,
+                       GtkSelectionData * seldata, guint inf, guint time,
+                       gpointer data)
+{
+  GdkPixbufFormat *format;
+  SourceData *userdata = g_new0 (SourceData, 1);
+  gchar **uris = gtk_selection_data_get_uris (seldata);
+  gchar *filename = g_filename_from_uri (uris[0], NULL, NULL);
+  g_return_if_fail (filename != NULL);
+  format = gdk_pixbuf_get_file_info (filename, NULL, NULL);
+  g_return_if_fail (format);
+  g_print ("received %s image: %s\n", filename,
+           gdk_pixbuf_format_get_name (format));
+  userdata->nick = "location";
+  userdata->value = g_strdup (filename);
+  userdata->data = data;
+  saveddelay = delay;
+  if (delay > 0) {
+    g_print ("%d\n", delay);
+    g_timeout_add_seconds (1, set_location_delayed, userdata);
+  }
+  else
+    g_object_set (G_OBJECT (userdata->data), userdata->nick, userdata->value, NULL);
+  g_free (filename);
+}
+
+
+gint
+main (gint argc, gchar * argv[])
+{
+  GstStateChangeReturn ret;
+  GstElement *pipeline;
+  GstElement *uload, *filter, *sink;
+  GstElement *sourcebin;
+  GstBus *bus;
+  GError *error = NULL;
+
+  GtkWidget *window;
+  GtkWidget *screen;
+  GtkWidget *vbox;
+  GtkWidget *hbox;
+  GtkWidget *play, *pause, *null, *ready;
+
+  gchar **source_desc_array = NULL;
+  gchar *source_desc = NULL;
+
+  GOptionContext *context;
+  GOptionEntry options[] = {
+    { "source-bin", 's', 0, G_OPTION_ARG_STRING_ARRAY, &source_desc_array,
+      "Use a custom source bin description (gst-launch style)", NULL },
+    { "method", 'm', 0, G_OPTION_ARG_INT, &method, "1 for gstdifferencematte, 2 for gstpixbufoverlay", "M" },
+    { "delay", 'd', 0, G_OPTION_ARG_INT, &delay, "Wait N seconds before to send the image to gstreamer (useful with differencematte)", "N" },
+    { NULL }
+  };
+
+  g_thread_init (NULL);
+
+  context = g_option_context_new (NULL);
+  g_option_context_add_main_entries (context, options, NULL);
+  g_option_context_add_group (context, gst_init_get_option_group ());
+  g_option_context_add_group (context, gtk_get_option_group (TRUE));
+  if (!g_option_context_parse (context, &argc, &argv, &error)) {
+    g_print ("Inizialization error: %s\n", GST_STR_NULL (error->message));
+    return -1;
+  }
+  g_option_context_free (context);
+  
+  if (source_desc_array != NULL) {
+    source_desc = g_strjoinv (" ", source_desc_array);
+    g_strfreev (source_desc_array);
+  }
+  if (source_desc == NULL) {
+    source_desc = g_strdup ("videotestsrc ! video/x-raw-rgb, width=352, height=288 ! identity");
+  }
+
+  sourcebin = gst_parse_bin_from_description (g_strdup (source_desc), TRUE, &error);
+  g_free (source_desc);
+  if (error) {
+    g_print ("Error while parsing source bin description: %s\n", 
+             GST_STR_NULL (error->message));
+    return -1;
+  }
+
+  g_set_application_name ("gst-gl-effects test app");
+
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_container_set_border_width (GTK_CONTAINER (window), 3);
+
+  pipeline = gst_pipeline_new ("pipeline");
+
+  uload = gst_element_factory_make ("glupload", "glu");
+  if (method == 2) {
+    filter = gst_element_factory_make ("glpixbufoverlay", "flt");
+  } else {
+    filter = gst_element_factory_make ("gldifferencematte", "flt");
+  }
+  sink = gst_element_factory_make ("glimagesink", "glsink");
+
+  gst_bin_add_many (GST_BIN (pipeline), sourcebin, uload, filter, sink, NULL);
+
+  if (!gst_element_link_many (sourcebin, uload, filter, sink, NULL)) {
+    g_print ("Failed to link one or more elements!\n");
+    return -1;
+  }
+
+  g_signal_connect (G_OBJECT (window), "delete-event",
+                    G_CALLBACK (destroy_cb), pipeline);
+  g_signal_connect (G_OBJECT (window), "destroy-event",
+                    G_CALLBACK (destroy_cb), pipeline);
+
+  screen = gtk_drawing_area_new ();
+
+  gtk_widget_set_size_request (screen, 640, 480);       // 500 x 376
+
+  vbox = gtk_vbox_new (FALSE, 2);
+
+  gtk_box_pack_start (GTK_BOX (vbox), screen, TRUE, TRUE, 0);
+
+  hbox = gtk_hbox_new (FALSE, 0);
+
+  play = gtk_button_new_with_label ("PLAY");
+
+  g_signal_connect (G_OBJECT (play), "clicked", G_CALLBACK (play_cb), pipeline);
+
+  pause = gtk_button_new_with_label ("PAUSE");
+
+  g_signal_connect (G_OBJECT (pause), "clicked",
+      G_CALLBACK (pause_cb), pipeline);
+
+  null = gtk_button_new_with_label ("NULL");
+
+  g_signal_connect (G_OBJECT (null), "clicked", G_CALLBACK (null_cb), pipeline);
+
+  ready = gtk_button_new_with_label ("READY");
+
+  g_signal_connect (G_OBJECT (ready), "clicked",
+      G_CALLBACK (ready_cb), pipeline);
+
+  gtk_box_pack_start (GTK_BOX (hbox), null, TRUE, TRUE, 0);
+  gtk_box_pack_start (GTK_BOX (hbox), ready, TRUE, TRUE, 0);
+  gtk_box_pack_start (GTK_BOX (hbox), play, TRUE, TRUE, 0);
+  gtk_box_pack_start (GTK_BOX (hbox), pause, TRUE, TRUE, 0);
+
+  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
+
+  gtk_container_add (GTK_CONTAINER (window), vbox);
+
+  bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
+  gst_bus_set_sync_handler (bus, (GstBusSyncHandler) create_window, screen);
+  gst_object_unref (bus);
+  g_signal_connect(screen, "expose-event", G_CALLBACK(expose_cb), sink);
+
+  gtk_drag_dest_set (screen, GTK_DEST_DEFAULT_ALL, NULL, 0, GDK_ACTION_COPY);
+  gtk_drag_dest_add_uri_targets (screen);
+
+  g_signal_connect (screen, "drag-data-received",
+      G_CALLBACK (on_drag_data_received), filter);
+
+  ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
+  if (ret == GST_STATE_CHANGE_FAILURE) {
+    g_print ("Failed to start up pipeline!\n");
+    return -1;
+  }
+
+  gtk_widget_show_all (GTK_WIDGET (window));
+
+  gtk_main ();
+
+  return 0;
+}