mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-18 14:26:43 +00:00
e040bb2dbe
Original commit message from CVS: 2005-09-02 Andy Wingo <wingo@pobox.com> * gst/gstelement.h (GstState): Renamed from GstElementState, changed to be a normal enum instead of flags. (GstStateChangeReturn): Renamed from GstElementStateReturn, names munged to be GST_STATE_CHANGE_*. (GST_STATE_CHANGE): Renamed from GST_STATE_TRANSITION, updated to work with the new state representation. (GstStateChange): New enumeration of possible state transitions. Replaces GST_STATE_FOO_TO_BAR with GST_STATE_CHANGE_FOO_TO_BAR. (GstElementClass::change_state): Pass the GstStateChange along as an argument. Helps language bindings, so they don't have to use tricky lock-needing macros like GST_STATE_CHANGE (). * scripts/update-states (file): New script. Run it on a file to update it for state naming and API changes. Updates files in place. * All files updated for the new API.
146 lines
3.7 KiB
C
146 lines
3.7 KiB
C
/* 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_CHANGE_SUCCESS)
|
|
g_assert_not_reached ();
|
|
|
|
if (gst_element_set_state (pipeline2,
|
|
GST_STATE_PLAYING) != GST_STATE_CHANGE_SUCCESS)
|
|
g_assert_not_reached ();
|
|
|
|
g_print ("running...\n");
|
|
/* fill queue */
|
|
empty = TRUE;
|
|
while (empty) {
|
|
gst_bin_iterate (GST_BIN (pipeline));
|
|
}
|
|
g_assert (!bug);
|
|
|
|
if (gst_element_set_state (pipeline2,
|
|
GST_STATE_READY) != GST_STATE_CHANGE_SUCCESS)
|
|
g_assert_not_reached ();
|
|
|
|
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");
|
|
|
|
if (gst_element_set_state (pipeline2,
|
|
GST_STATE_PLAYING) != GST_STATE_CHANGE_SUCCESS)
|
|
g_assert_not_reached ();
|
|
|
|
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 (pipeline);
|
|
gst_object_unref (pipeline2);
|
|
src = id = sink = pipeline = pipeline2 = NULL;
|
|
|
|
g_print ("done.\n");
|
|
return 0;
|
|
}
|