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/*
* 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 ("playbin", NULL);
if (!bin) {
GST_WARNING ("need playbin 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_seconds (1, (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);
}
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