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examples/gl/gtk: use the sync bus callback to set the window handle

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And output error messages.
This commit is contained in:
Matthew Waters 2014-09-22 11:59:30 +10:00 committed by Tim-Philipp Müller
parent 9cccbb315c
commit 821bc8da5b
2 changed files with 120 additions and 20 deletions
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82
tests/examples/gl/gtk/fxtest/fxtest.c
View file

@ -33,15 +33,74 @@
#include <gst/video/videooverlay.h>
/* TODO: use video overlay in the proper way (like suggested in docs, see gtkvideooverlay example) */
static GstBusSyncReply
create_window (GstBus * bus, GstMessage * message, GtkWidget * widget)
{
/* ignore anything but 'prepare-window-handle' element messages */
if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
return GST_BUS_PASS;
if (!gst_is_video_overlay_prepare_window_handle_message (message))
return GST_BUS_PASS;
g_print ("setting window handle\n");
/* do not call gdk_window_ensure_native for the first time here because
* we are in a different thread than the main thread
* (and the main thread the one) */
gst_video_overlay_set_gtk_window (GST_VIDEO_OVERLAY (GST_MESSAGE_SRC
(message)), widget);
gst_message_unref (message);
return GST_BUS_DROP;
}
static void
end_stream_cb (GstBus * bus, GstMessage * message, GstElement * pipeline)
{
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_EOS:
g_print ("End of stream\n");
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
gtk_main_quit ();
break;
case GST_MESSAGE_ERROR:
{
gchar *debug = NULL;
GError *err = NULL;
gst_message_parse_error (message, &err, &debug);
g_print ("Error: %s\n", err->message);
g_error_free (err);
if (debug) {
g_print ("Debug details: %s\n", debug);
g_free (debug);
}
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
gtk_main_quit ();
break;
}
default:
break;
}
}
static gboolean
expose_cb (GtkWidget * widget, gpointer data)
expose_cb (GtkWidget * widget, gpointer unused, gpointer data)
{
GstVideoOverlay *overlay =
GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (data),
GST_TYPE_VIDEO_OVERLAY));
gst_video_overlay_set_gtk_window (overlay, widget);
gst_video_overlay_expose (overlay);
gst_object_unref (overlay);
return FALSE;
@ -117,6 +176,7 @@ main (gint argc, gchar * argv[])
GstElement *pipeline;
GstElement *filter, *sink;
GstElement *sourcebin;
GstBus *bus;
GError *error = NULL;
GtkWidget *window;
@ -188,6 +248,17 @@ main (gint argc, gchar * argv[])
G_CALLBACK (destroy_cb), pipeline);
screen = gtk_drawing_area_new ();
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_signal_watch (bus);
g_signal_connect (bus, "message::error", G_CALLBACK (end_stream_cb),
pipeline);
g_signal_connect (bus, "message::warning", G_CALLBACK (end_stream_cb),
pipeline);
g_signal_connect (bus, "message::eos", G_CALLBACK (end_stream_cb), pipeline);
gst_bus_set_sync_handler (bus, (GstBusSyncHandler) create_window, screen,
NULL);
gst_object_unref (bus);
gtk_widget_set_size_request (screen, 640, 480); // 500 x 376
@ -247,7 +318,10 @@ main (gint argc, gchar * argv[])
gtk_container_add (GTK_CONTAINER (window), vbox);
g_signal_connect (screen, "realize", G_CALLBACK (expose_cb), pipeline);
g_signal_connect (screen, "draw", G_CALLBACK (expose_cb), pipeline);
g_signal_connect (screen, "configure-event", G_CALLBACK (expose_cb),
pipeline);
gtk_widget_realize (screen);
ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
if (ret == GST_STATE_CHANGE_FAILURE) {

58
tests/examples/gl/gtk/gtkvideooverlay/main.cpp
View file

@ -27,34 +27,60 @@
static GstBusSyncReply create_window (GstBus* bus, GstMessage* message, GtkWidget* widget)
{
// ignore anything but 'prepare-window-handle' element messages
if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
return GST_BUS_PASS;
/* ignore anything but 'prepare-window-handle' element messages */
if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
return GST_BUS_PASS;
if (!gst_is_video_overlay_prepare_window_handle_message (message))
return GST_BUS_PASS;
if (!gst_is_video_overlay_prepare_window_handle_message (message))
return GST_BUS_PASS;
g_print ("setting window handle\n");
g_print ("setting window handle\n");
//do not call gdk_window_ensure_native for the first time here because
//we are in a different thread than the main thread
//(and the main thread the onne)
gst_video_overlay_set_gtk_window (GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message)), widget);
/* do not call gdk_window_ensure_native for the first time here because
* we are in a different thread than the main thread */
gst_video_overlay_set_gtk_window (GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message)), widget);
gst_message_unref (message);
gst_message_unref (message);
return GST_BUS_DROP;
return GST_BUS_DROP;
}
static void end_stream_cb(GstBus* bus, GstMessage* message, GstElement* pipeline)
{
g_print("End of stream\n");
switch (GST_MESSAGE_TYPE (message))
{
case GST_MESSAGE_EOS:
g_print ("End of stream\n");
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref(pipeline);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref(pipeline);
gtk_main_quit ();
break;
case GST_MESSAGE_ERROR:
{
gchar *debug = NULL;
GError *err = NULL;
gtk_main_quit();
gst_message_parse_error (message, &err, &debug);
g_print ("Error: %s\n", err->message);
g_error_free (err);
if (debug)
{
g_print ("Debug details: %s\n", debug);
g_free (debug);
}
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref(pipeline);
gtk_main_quit ();
break;
}
default:
break;
}
}
static gboolean draw_cb(GtkWidget* widget, cairo_t *cr, GstElement* videosink)