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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.
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/* GStreamer
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* Copyright (C) 2004 Benjamin Otte <in7y118@public.uni-hamburg.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <gst/gst.h>
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GstElement *pipeline, *src, *sink;
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static void
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cb_handoff (GstElement * element, GstBuffer * buffer, GstPad * pad,
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gpointer unused)
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{
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if (GST_PAD_PEER (pad)) {
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g_print ("relinking...\n");
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gst_pad_unlink (pad, GST_PAD_PEER (pad));
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gst_bin_remove (GST_BIN (pipeline), OTHER_ELEMENT);
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OTHER_ELEMENT =
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gst_element_factory_make ("fake" G_STRINGIFY (OTHER_ELEMENT), NULL);
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g_assert (OTHER_ELEMENT);
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gst_bin_add (GST_BIN (pipeline), OTHER_ELEMENT);
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gst_element_sync_state_with_parent (OTHER_ELEMENT);
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gst_element_link (ELEMENT, OTHER_ELEMENT);
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}
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}
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gint
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main (gint argc, gchar ** argv)
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{
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guint i = 0;
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gst_init (&argc, &argv);
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g_print ("setting up...\n");
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/* setup pipeline */
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pipeline = gst_element_factory_make ("pipeline", NULL);
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g_assert (pipeline);
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src = gst_element_factory_make ("fakesrc", NULL);
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g_assert (src);
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sink = gst_element_factory_make ("fakesink", NULL);
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g_assert (sink);
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gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
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gst_element_link (src, sink);
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/* setup special stuff */
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g_object_set (ELEMENT, "signal-handoffs", TRUE, NULL);
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g_signal_connect (ELEMENT, "handoff", (GCallback) cb_handoff, NULL);
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/* run pipeline */
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g_print ("running...\n");
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if (gst_element_set_state (pipeline,
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GST_STATE_PLAYING) != GST_STATE_CHANGE_SUCCESS)
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g_assert_not_reached ();
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while (i++ < 10 && gst_bin_iterate (GST_BIN (pipeline)));
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g_print ("cleaning up...\n");
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gst_object_unref (pipeline);
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pipeline = NULL;
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g_print ("done.\n");
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return 0;
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}
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