[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)

This commit is contained in:
Filippo Argiolas 2008-08-19 08:50:14 +02:00 committed by Matthew Waters
parent 944afa296c
commit 3264db13fa

View file

@ -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;
}