mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 13:18:52 +00:00
162 lines
5.2 KiB
C
162 lines
5.2 KiB
C
/* GStreamer
|
|
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
|
|
#include <gst/gst.h>
|
|
|
|
static GMainLoop *loop = NULL;
|
|
|
|
static gboolean
|
|
my_bus_callback (GstBus * bus, GstMessage * message, gpointer data)
|
|
{
|
|
g_print ("Got %s message\n", GST_MESSAGE_TYPE_NAME (message));
|
|
|
|
switch (GST_MESSAGE_TYPE (message)) {
|
|
case GST_MESSAGE_ERROR:{
|
|
GError *err;
|
|
gchar *debug;
|
|
|
|
gst_message_parse_error (message, &err, &debug);
|
|
g_print ("Error: %s\n", err->message);
|
|
g_error_free (err);
|
|
g_free (debug);
|
|
|
|
g_main_loop_quit (loop);
|
|
break;
|
|
}
|
|
case GST_MESSAGE_EOS:
|
|
/* end-of-stream */
|
|
g_main_loop_quit (loop);
|
|
break;
|
|
default:
|
|
/* unhandled message */
|
|
break;
|
|
}
|
|
|
|
/* we want to be notified again the next time there is a message
|
|
* on the bus, so returning TRUE (FALSE means we want to stop watching
|
|
* for messages on the bus and our callback should not be called again)
|
|
*/
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
switch_timer (GstElement * video_switch)
|
|
{
|
|
gint nb_sources;
|
|
GstPad *active_pad, *new_pad;
|
|
gchar *active_name;
|
|
|
|
g_message ("switching");
|
|
g_object_get (G_OBJECT (video_switch), "n-pads", &nb_sources, NULL);
|
|
g_object_get (G_OBJECT (video_switch), "active-pad", &active_pad, NULL);
|
|
|
|
active_name = gst_pad_get_name (active_pad);
|
|
if (strcmp (active_name, "sink0") == 0) {
|
|
new_pad = gst_element_get_static_pad (video_switch, "sink1");
|
|
} else {
|
|
new_pad = gst_element_get_static_pad (video_switch, "sink0");
|
|
}
|
|
g_object_set (G_OBJECT (video_switch), "active-pad", new_pad, NULL);
|
|
g_free (active_name);
|
|
gst_object_unref (new_pad);
|
|
|
|
g_message ("current number of sources : %d, active source %s",
|
|
nb_sources, gst_pad_get_name (active_pad));
|
|
|
|
return (GST_STATE (GST_ELEMENT (video_switch)) == GST_STATE_PLAYING);
|
|
}
|
|
|
|
static void
|
|
last_message_received (GObject * segment)
|
|
{
|
|
gchar *last_message;
|
|
|
|
g_object_get (segment, "last_message", &last_message, NULL);
|
|
g_print ("last-message: %s\n", last_message);
|
|
g_free (last_message);
|
|
}
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
GstElement *pipeline, *src1, *src2, *video_switch, *video_sink, *segment;
|
|
GstElement *sink1_sync, *sink2_sync, *capsfilter;
|
|
GstBus *bus;
|
|
|
|
/* Initing GStreamer library */
|
|
gst_init (&argc, &argv);
|
|
|
|
loop = g_main_loop_new (NULL, FALSE);
|
|
|
|
pipeline = gst_pipeline_new ("pipeline");
|
|
src1 = gst_element_factory_make ("videotestsrc", "src1");
|
|
g_object_set (G_OBJECT (src1), "pattern", 0, NULL);
|
|
src2 = gst_element_factory_make ("videotestsrc", "src2");
|
|
g_object_set (G_OBJECT (src2), "pattern", 1, NULL);
|
|
capsfilter = gst_element_factory_make ("capsfilter", "caps0");
|
|
g_object_set (G_OBJECT (capsfilter), "caps",
|
|
gst_caps_from_string ("video/x-raw-rgb,width=640,height=480"), NULL);
|
|
video_switch = gst_element_factory_make ("input-selector", "video_switch");
|
|
segment = gst_element_factory_make ("identity", "identity-segment");
|
|
g_object_set (G_OBJECT (segment), "silent", TRUE, NULL);
|
|
g_signal_connect (G_OBJECT (segment), "notify::last-message",
|
|
G_CALLBACK (last_message_received), segment);
|
|
g_object_set (G_OBJECT (segment), "single-segment", TRUE, NULL);
|
|
video_sink = gst_element_factory_make ("ximagesink", "video_sink");
|
|
g_object_set (G_OBJECT (video_sink), "sync", FALSE, NULL);
|
|
sink1_sync = gst_element_factory_make ("identity", "sink0_sync");
|
|
g_object_set (G_OBJECT (sink1_sync), "sync", TRUE, NULL);
|
|
sink2_sync = gst_element_factory_make ("identity", "sink1_sync");
|
|
g_object_set (G_OBJECT (sink2_sync), "sync", TRUE, NULL);
|
|
gst_bin_add_many (GST_BIN (pipeline), src1, src2, segment, video_switch,
|
|
video_sink, sink1_sync, sink2_sync, capsfilter, NULL);
|
|
gst_element_link (src1, sink1_sync);
|
|
gst_element_link (sink1_sync, video_switch);
|
|
gst_element_link (src2, capsfilter);
|
|
gst_element_link (capsfilter, sink2_sync);
|
|
gst_element_link (sink2_sync, video_switch);
|
|
gst_element_link (video_switch, segment);
|
|
gst_element_link (segment, /*scaler);
|
|
gst_element_link (scaler, */ video_sink);
|
|
|
|
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
|
|
gst_bus_add_watch (bus, my_bus_callback, NULL);
|
|
gst_object_unref (bus);
|
|
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
|
|
|
|
g_timeout_add (200, (GSourceFunc) switch_timer, video_switch);
|
|
|
|
g_main_loop_run (loop);
|
|
|
|
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_READY);
|
|
|
|
/* unref */
|
|
gst_object_unref (GST_OBJECT (pipeline));
|
|
|
|
exit (0);
|
|
}
|