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added check to make sure there's a pipeline desc before building

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Original commit message from CVS:
added check to make sure there's a pipeline desc before building
This commit is contained in:
Erik Walthinsen 2001-06-02 18:26:25 +00:00
parent 3d12df5409
commit b4dcb2f779
1 changed files with 101 additions and 2 deletions
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103
tools/gstreamer-launch.c
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@ -4,6 +4,88 @@
#include <string.h>
#include <stdlib.h>
static int launch_argc;
static char **launch_argv;
int xid = 0;
GtkWidget *window;
GtkWidget *hbox;
GtkWidget *gtk_socket;
typedef void (*found_handler) (GstElement *element, GtkArg *arg, void *priv);
void
arg_search (GstBin *bin, gchar *argname, found_handler handler, void *priv)
{
GList *children;
GstElement *child;
GtkType type;
GtkArg *args;
guint32 *flags;
guint num_args,i;
gchar *ccargname;
ccargname = g_strdup_printf("::%s",argname);
children = gst_bin_get_list(bin);
while (children) {
child = GST_ELEMENT(children->data);
children = g_list_next(children);
// fprintf(stderr,"have child \"%s\"\n",gst_object_get_path_string(GST_OBJECT(child)));
if (GST_IS_BIN(child)) arg_search(GST_BIN(child),argname,handler,priv);
else {
type = GTK_OBJECT_TYPE(child);
while (type != GTK_TYPE_INVALID) {
args = gtk_object_query_args(type,&flags,&num_args);
for (i=0;i<num_args;i++) {
//fprintf(stderr,"arg is \"%s\"\n",args[i].name);
if (strstr(args[i].name,ccargname))
(handler)(child,&args[i],priv);
}
type = gtk_type_parent(type);
}
}
}
g_free(ccargname);
}
void handle_have_size(GstElement *element,int width,int height) {
fprintf(stderr,"have size from xvideosink: %dx%d\n",width,height);
gtk_widget_set_usize(gtk_socket,width,height);
}
void xid_handler(GstElement *element, GtkArg *arg, void *priv) {
fprintf(stderr,"have xid\n");
xid = GTK_VALUE_INT(*arg);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
hbox = gtk_hbox_new(TRUE,10);
gtk_socket = gtk_socket_new ();
gtk_widget_set_usize(gtk_socket,720,480);
gtk_widget_show(gtk_socket);
gtk_container_add(GTK_CONTAINER(window),hbox);
gtk_box_pack_end(GTK_BOX(hbox),gtk_socket,TRUE,TRUE,0);
gtk_widget_realize(gtk_socket);
gtk_socket_steal (GTK_SOCKET (gtk_socket), xid);
gtk_object_set(GTK_OBJECT(window),"allow_grow",TRUE,NULL);
gtk_object_set(GTK_OBJECT(window),"allow_shrink",TRUE,NULL);
gtk_widget_show_all(window);
gtk_signal_connect (GTK_OBJECT (element), "have_size",
GTK_SIGNAL_FUNC (handle_have_size), element);
}
gboolean
idle_func (gpointer data)
{
return gst_bin_iterate (GST_BIN (data));
}
int
main(int argc, char *argv[])
{
@ -14,6 +96,9 @@ main(int argc, char *argv[])
gst_init (&argc, &argv);
launch_argc = argc;
launch_argv = argv;
pipeline = gst_pipeline_new ("launch");
// make a null-terminated version of argv
@ -34,14 +119,28 @@ main(int argc, char *argv[])
// free the null-terminated argv
g_free (argvn);
// fail if there are no pipes in it (needs pipes for a pipeline
if (!strchr(cmdline,'!')) {
fprintf(stderr,"ERROR: no pipeline description found on commandline\n");
exit(1);
}
gst_parse_launch (cmdline, GST_BIN (pipeline));
xmlSaveFile("gstreamer-launch.gst",gst_xml_write(pipeline));
arg_search(GST_BIN(pipeline),"xid",xid_handler,NULL);
// xmlSaveFile("gstreamer-launch.gst",gst_xml_write(pipeline));
fprintf(stderr,"RUNNING pipeline\n");
gst_element_set_state (pipeline, GST_STATE_PLAYING);
while (gst_bin_iterate (GST_BIN (pipeline)));
// if (have_window) {
gtk_idle_add(idle_func,pipeline);
fprintf(stderr,"going into gtk_main()\n");
gtk_main();
// } else {
// while (gst_bin_iterate (GST_BIN (pipeline)));
// }
gst_element_set_state (pipeline, GST_STATE_NULL);