mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-24 17:20:36 +00:00
113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
/* GStreamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include <gst/gst.h>
|
|
|
|
static void
|
|
caps_nego_failed (GstPad * pad, GstCaps * caps)
|
|
{
|
|
gboolean res;
|
|
GstPad *peer;
|
|
GstCaps *allowed;
|
|
GValue v_caps = { 0, };
|
|
GValue v_allowed = { 0, };
|
|
GstCaps *toset;
|
|
|
|
peer = gst_pad_get_peer (pad);
|
|
g_value_init (&v_caps, GST_TYPE_CAPS);
|
|
g_value_set_boxed (&v_caps, caps);
|
|
allowed = gst_pad_get_allowed_caps (pad);
|
|
g_value_init (&v_allowed, GST_TYPE_CAPS);
|
|
g_value_set_boxed (&v_allowed, allowed);
|
|
|
|
g_print ("caps nego failed on pad %s:%s\n"
|
|
" caps: %p (%s)\n"
|
|
" allowed: %p (%s)\n",
|
|
gst_element_get_name (gst_pad_get_parent (pad)),
|
|
gst_pad_get_name (pad),
|
|
caps,
|
|
g_strdup_value_contents (&v_caps),
|
|
allowed, g_strdup_value_contents (&v_allowed));
|
|
|
|
if (GST_CAPS_IS_FIXED (caps))
|
|
/* if the elements suggested fixed caps, we just relink that way */
|
|
toset = caps;
|
|
else
|
|
/* else we use our hardcoded caps as an exazmple */
|
|
toset = GST_CAPS_NEW ("testcaps", "test/test", "prop", GST_PROPS_INT (2)
|
|
);
|
|
|
|
res = gst_pad_relink_filtered (pad, peer, toset);
|
|
if (!res) {
|
|
g_warning ("could not relink identity and sink\n");
|
|
}
|
|
}
|
|
|
|
gint
|
|
main (gint argc, gchar * argv[])
|
|
{
|
|
GstElement *pipeline;
|
|
GstElement *src, *identity, *sink;
|
|
gboolean res;
|
|
|
|
gst_init (&argc, &argv);
|
|
|
|
pipeline = gst_pipeline_new ("pipeline");
|
|
|
|
src = gst_element_factory_make ("fakesrc", "src");
|
|
g_object_set (G_OBJECT (src), "num_buffers", 4, NULL);
|
|
identity = gst_element_factory_make ("identity", "identity");
|
|
g_object_set (G_OBJECT (identity), "delay_capsnego", TRUE, NULL);
|
|
|
|
sink = gst_element_factory_make ("fakesink", "sink");
|
|
|
|
gst_bin_add_many (GST_BIN (pipeline), src, identity, sink, NULL);
|
|
|
|
res = gst_element_link_pads_filtered (src, "src",
|
|
identity, "sink",
|
|
GST_CAPS_NEW ("testcaps", "test/test", "prop", GST_PROPS_INT (1)
|
|
));
|
|
if (!res) {
|
|
g_print ("could not link src and identity\n");
|
|
return -1;
|
|
}
|
|
|
|
res = gst_element_link_pads_filtered (identity, "src",
|
|
sink, "sink",
|
|
GST_CAPS_NEW ("testcaps", "test/test", "prop", GST_PROPS_INT_RANGE (2, 3)
|
|
));
|
|
if (!res) {
|
|
g_print ("could not link identity and sink\n");
|
|
return -1;
|
|
}
|
|
|
|
g_signal_connect (gst_element_get_pad (identity, "src"),
|
|
"caps_nego_failed", G_CALLBACK (caps_nego_failed), NULL);
|
|
|
|
g_signal_connect (pipeline, "deep_notify",
|
|
G_CALLBACK (gst_element_default_deep_notify), NULL);
|
|
g_signal_connect (pipeline, "error", G_CALLBACK (gst_element_default_error),
|
|
NULL);
|
|
|
|
gst_element_set_state (pipeline, GST_STATE_PLAYING);
|
|
while (gst_bin_iterate (GST_BIN (pipeline)));
|
|
gst_element_set_state (pipeline, GST_STATE_NULL);
|
|
|
|
return 0;
|
|
}
|