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/* GStreamer
* Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <unistd.h>
#include <gst/gst.h>
static gboolean empty;
static gboolean bug;
static gboolean handoff;
static GstElement *pipeline2;
static void
queue_empty (GstElement * element)
{
g_print ("queue empty\n");
if (!handoff)
bug = TRUE;
}
static void
queue_filled (GstElement * element)
{
g_print ("queue filled\n");
empty = FALSE;
/* read from the other end */
handoff = FALSE;
bug = FALSE;
alarm (5);
g_print ("emptying queue with 5 second timeout...\n");
while (!bug && !handoff) {
gst_bin_iterate (GST_BIN (pipeline2));
}
}
static void
handoff_identity (GstElement * element)
{
g_print ("identity handoff\n");
handoff = TRUE;
}
gint
main (gint argc, gchar ** argv)
{
GstElement *pipeline, *src, *sink, *queue, *id;
gst_init (&argc, &argv);
g_print ("setting up...\n");
/* setup pipeline */
pipeline = gst_element_factory_make ("pipeline", NULL);
g_assert (pipeline);
src = gst_element_factory_make ("fakesrc", NULL);
g_assert (src);
queue = gst_element_factory_make ("queue", NULL);
g_assert (queue);
g_signal_connect (G_OBJECT (queue), "overrun", (GCallback) queue_filled,
NULL);
g_signal_connect (G_OBJECT (queue), "underrun", (GCallback) queue_empty,
NULL);
gst_bin_add_many (GST_BIN (pipeline), src, queue, NULL);
gst_element_link_pads (src, "src", queue, "sink");
/* second pipeline for sinks */
pipeline2 = gst_element_factory_make ("pipeline", NULL);
g_assert (pipeline2);
id = gst_element_factory_make ("identity", NULL);
g_assert (id);
g_signal_connect (G_OBJECT (id), "handoff", (GCallback) handoff_identity,
NULL);
sink = gst_element_factory_make ("fakesink", NULL);
g_assert (sink);
gst_bin_add_many (GST_BIN (pipeline2), id, sink, NULL);
gst_element_link_pads (queue, "src", id, "sink");
gst_element_link_pads (id, "src", sink, "sink");
if (gst_element_set_state (pipeline, GST_STATE_PLAYING) != GST_STATE_SUCCESS)
g_assert_not_reached ();
if (gst_element_set_state (pipeline2, GST_STATE_PLAYING) != GST_STATE_SUCCESS)
g_assert_not_reached ();
g_print ("running...\n");
/* fill queue */
empty = TRUE;
while (empty) {
gst_bin_iterate (GST_BIN (pipeline));
}
g_assert (!bug);
g_print ("relinking...\n");
/* now unlink and link id and sink */
gst_element_unlink_pads (id, "src", sink, "sink");
gst_element_link_pads (id, "src", sink, "sink");
g_print ("running again...\n");
/* fill queue */
empty = TRUE;
while (empty) {
gst_bin_iterate (GST_BIN (pipeline));
}
g_assert (!bug);
/* trigger the bug */
g_print ("cleaning up...\n");
gst_object_unref (GST_OBJECT (pipeline));
gst_object_unref (GST_OBJECT (pipeline2));
src = id = sink = pipeline = pipeline2 = NULL;
g_print ("done.\n");
return 0;
}
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