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121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <gst/gst.h>
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static void
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caps_nego_failed (GstPad *pad, GstCaps *caps)
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{
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gboolean res;
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GstPad *peer;
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GstCaps *allowed;
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GValue v_caps = { 0, };
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GValue v_allowed = { 0, };
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GstCaps *toset;
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peer = gst_pad_get_peer (pad);
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g_value_init (&v_caps, GST_TYPE_CAPS);
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g_value_set_boxed (&v_caps, caps);
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allowed = gst_pad_get_allowed_caps (pad);
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g_value_init (&v_allowed, GST_TYPE_CAPS);
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g_value_set_boxed (&v_allowed, allowed);
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g_print ("caps nego failed on pad %s:%s\n"
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" caps: %p (%s)\n"
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" allowed: %p (%s)\n",
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gst_element_get_name (gst_pad_get_parent (pad)),
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gst_pad_get_name (pad),
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caps,
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g_strdup_value_contents (&v_caps),
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allowed,
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g_strdup_value_contents (&v_allowed));
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if (GST_CAPS_IS_FIXED (caps))
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/* if the elements suggested fixed caps, we just relink that way */
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toset = caps;
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else
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/* else we use our hardcoded caps as an exazmple */
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toset = GST_CAPS_NEW (
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"testcaps",
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"test/test",
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"prop", GST_PROPS_INT (2)
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);
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res = gst_pad_relink_filtered (pad, peer, toset);
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if (!res) {
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g_warning ("could not relink identity and sink\n");
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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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GstElement *pipeline;
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GstElement *src, *identity, *sink;
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gboolean res;
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gst_init (&argc, &argv);
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pipeline = gst_pipeline_new ("pipeline");
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src = gst_element_factory_make ("fakesrc", "src");
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g_object_set (G_OBJECT (src), "num_buffers", 4, NULL);
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identity = gst_element_factory_make ("identity", "identity");
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g_object_set (G_OBJECT (identity), "delay_capsnego", TRUE, NULL);
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sink = gst_element_factory_make ("fakesink", "sink");
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gst_bin_add_many (GST_BIN (pipeline), src, identity, sink, NULL);
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res = gst_element_link_pads_filtered (src, "src",
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identity, "sink",
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GST_CAPS_NEW (
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"testcaps",
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"test/test",
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"prop", GST_PROPS_INT (1)
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));
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if (!res) {
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g_print ("could not link src and identity\n");
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return -1;
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}
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res = gst_element_link_pads_filtered (identity, "src",
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sink, "sink",
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GST_CAPS_NEW (
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"testcaps",
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"test/test",
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"prop", GST_PROPS_INT_RANGE (2, 3)
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));
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if (!res) {
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g_print ("could not link identity and sink\n");
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return -1;
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}
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g_signal_connect (gst_element_get_pad (identity, "src"),
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"caps_nego_failed", G_CALLBACK (caps_nego_failed), NULL);
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g_signal_connect (pipeline, "deep_notify", G_CALLBACK (gst_element_default_deep_notify), NULL);
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g_signal_connect (pipeline, "error", G_CALLBACK (gst_element_default_error), NULL);
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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while (gst_bin_iterate (GST_BIN (pipeline)));
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gst_element_set_state (pipeline, GST_STATE_NULL);
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return 0;
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}
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