--- /dev/null
+/*
+ * position-formats.c
+ *
+ * we mostly use GST_FORMAT_TIME in queries and seeks. Test the other ones to
+ * know what works and what not.
+ */
+
+#include <gst/gst.h>
+
+#include <stdio.h>
+
+static gboolean
+bus_message (GstBus * bus, GstMessage * message, gpointer user_data)
+{
+ GMainLoop *loop = (GMainLoop *) user_data;
+
+ switch (GST_MESSAGE_TYPE (message)) {
+ case GST_MESSAGE_ERROR:
+ {
+ GError *gerror;
+ gchar *debug;
+
+ gst_message_parse_error (message, &gerror, &debug);
+ gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug);
+ g_error_free (gerror);
+ g_free (debug);
+
+ g_main_loop_quit (loop);
+ break;
+ }
+ case GST_MESSAGE_WARNING:
+ {
+ GError *gerror;
+ gchar *debug;
+
+ gst_message_parse_warning (message, &gerror, &debug);
+ gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug);
+ g_error_free (gerror);
+ g_free (debug);
+
+ g_main_loop_quit (loop);
+ break;
+ }
+ case GST_MESSAGE_EOS:
+ g_main_loop_quit (loop);
+ break;
+ default:
+ break;
+ }
+ return TRUE;
+}
+
+static void
+print_value (gboolean res, GstFormat fmt, gint64 val)
+{
+ if (res) {
+ switch (fmt) {
+ case GST_FORMAT_TIME:
+ printf ("%" GST_TIME_FORMAT, GST_TIME_ARGS (val));
+ break;
+ case GST_FORMAT_PERCENT:
+ printf ("%8.4lf%%", (gdouble) val / GST_FORMAT_PERCENT_SCALE);
+ break;
+ case GST_FORMAT_DEFAULT:
+ case GST_FORMAT_BYTES:
+ case GST_FORMAT_BUFFERS:
+ default:
+ printf ("%" G_GINT64_FORMAT, val);
+ break;
+ }
+ } else {
+ printf ("-");
+ }
+}
+
+static gboolean
+run_queries (gpointer user_data)
+{
+ GstElement *bin = (GstElement *) user_data;
+ GstFormat i, fmt;
+ gint64 pos, dur;
+ gboolean pres, dres;
+
+ for (i = GST_FORMAT_DEFAULT; i <= GST_FORMAT_PERCENT; i++) {
+ fmt = i;
+ pres = gst_element_query_position (bin, &fmt, &pos);
+ fmt = i;
+ dres = gst_element_query_duration (bin, &fmt, &dur);
+ printf ("%-8s : ", gst_format_get_name (i));
+ print_value (pres, fmt, pos);
+ printf (" / ");
+ print_value (dres, fmt, dur);
+ printf ("\n");
+ }
+ printf ("\n");
+
+ return TRUE;
+}
+
+gint
+main (gint argc, gchar ** argv)
+{
+ gint res = 1;
+ GstElement *bin;
+ GstBus *bus;
+ GMainLoop *loop;
+ const gchar *uri;
+
+ gst_init (&argc, &argv);
+
+ if (argc < 2) {
+ printf ("Usage: %s <uri>\n", argv[0]);
+ goto Error;
+ }
+ uri = argv[1];
+
+ /* build pipeline */
+ bin = gst_element_factory_make ("playbin2", NULL);
+ if (!bin) {
+ GST_WARNING ("need playbin2 from gst-plugins-base");
+ goto Error;
+ }
+
+ g_object_set (bin, "uri", uri, NULL);
+
+ loop = g_main_loop_new (NULL, TRUE);
+
+ /* add watch for messages */
+ bus = gst_pipeline_get_bus (GST_PIPELINE (bin));
+ gst_bus_add_watch (bus, (GstBusFunc) bus_message, (gpointer) loop);
+ gst_object_unref (bus);
+
+ /* add timeout for queries */
+ g_timeout_add (1000, (GSourceFunc) run_queries, (gpointer) bin);
+
+ /* run the show */
+ if (gst_element_set_state (bin,
+ GST_STATE_PLAYING) != GST_STATE_CHANGE_FAILURE) {
+ g_main_loop_run (loop);
+ gst_element_set_state (bin, GST_STATE_NULL);
+ }
+
+ /* cleanup */
+ g_main_loop_unref (loop);
+ gst_object_unref (G_OBJECT (bin));
+ res = 0;
+Error:
+ return (res);
+}