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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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92967c3d2a
Update for pad template name changes.
162 lines
5.2 KiB
C
162 lines
5.2 KiB
C
/* GStreamer
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* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include <gst/gst.h>
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static GMainLoop *loop = NULL;
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static gboolean
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my_bus_callback (GstBus * bus, GstMessage * message, gpointer data)
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{
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g_print ("Got %s message\n", GST_MESSAGE_TYPE_NAME (message));
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switch (GST_MESSAGE_TYPE (message)) {
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case GST_MESSAGE_ERROR:{
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GError *err;
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gchar *debug;
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gst_message_parse_error (message, &err, &debug);
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g_print ("Error: %s\n", err->message);
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g_error_free (err);
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g_free (debug);
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g_main_loop_quit (loop);
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break;
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}
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case GST_MESSAGE_EOS:
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/* end-of-stream */
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g_main_loop_quit (loop);
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break;
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default:
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/* unhandled message */
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break;
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}
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/* we want to be notified again the next time there is a message
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* on the bus, so returning TRUE (FALSE means we want to stop watching
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* for messages on the bus and our callback should not be called again)
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*/
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return TRUE;
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}
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static gboolean
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switch_timer (GstElement * video_switch)
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{
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gint nb_sources;
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GstPad *active_pad, *new_pad;
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gchar *active_name;
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g_message ("switching");
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g_object_get (G_OBJECT (video_switch), "n-pads", &nb_sources, NULL);
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g_object_get (G_OBJECT (video_switch), "active-pad", &active_pad, NULL);
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active_name = gst_pad_get_name (active_pad);
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if (strcmp (active_name, "sink_0") == 0) {
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new_pad = gst_element_get_static_pad (video_switch, "sink_1");
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} else {
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new_pad = gst_element_get_static_pad (video_switch, "sink_0");
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}
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g_object_set (G_OBJECT (video_switch), "active-pad", new_pad, NULL);
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g_free (active_name);
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gst_object_unref (new_pad);
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g_message ("current number of sources : %d, active source %s",
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nb_sources, gst_pad_get_name (active_pad));
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return (GST_STATE (GST_ELEMENT (video_switch)) == GST_STATE_PLAYING);
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}
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static void
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last_message_received (GObject * segment)
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{
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gchar *last_message;
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g_object_get (segment, "last_message", &last_message, NULL);
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g_print ("last-message: %s\n", last_message);
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g_free (last_message);
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}
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int
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main (int argc, char *argv[])
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{
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GstElement *pipeline, *src1, *src2, *video_switch, *video_sink, *segment;
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GstElement *sink1_sync, *sink2_sync, *capsfilter;
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GstBus *bus;
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/* Initing GStreamer library */
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gst_init (&argc, &argv);
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loop = g_main_loop_new (NULL, FALSE);
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pipeline = gst_pipeline_new ("pipeline");
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src1 = gst_element_factory_make ("videotestsrc", "src1");
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g_object_set (G_OBJECT (src1), "pattern", 0, NULL);
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src2 = gst_element_factory_make ("videotestsrc", "src2");
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g_object_set (G_OBJECT (src2), "pattern", 1, NULL);
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capsfilter = gst_element_factory_make ("capsfilter", "caps0");
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g_object_set (G_OBJECT (capsfilter), "caps",
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gst_caps_from_string ("video/x-raw,width=640,height=480"), NULL);
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video_switch = gst_element_factory_make ("input-selector", "video_switch");
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segment = gst_element_factory_make ("identity", "identity-segment");
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g_object_set (G_OBJECT (segment), "silent", TRUE, NULL);
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g_signal_connect (G_OBJECT (segment), "notify::last-message",
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G_CALLBACK (last_message_received), segment);
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g_object_set (G_OBJECT (segment), "single-segment", TRUE, NULL);
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video_sink = gst_element_factory_make ("ximagesink", "video_sink");
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g_object_set (G_OBJECT (video_sink), "sync", FALSE, NULL);
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sink1_sync = gst_element_factory_make ("identity", "sink0_sync");
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g_object_set (G_OBJECT (sink1_sync), "sync", TRUE, NULL);
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sink2_sync = gst_element_factory_make ("identity", "sink1_sync");
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g_object_set (G_OBJECT (sink2_sync), "sync", TRUE, NULL);
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gst_bin_add_many (GST_BIN (pipeline), src1, src2, segment, video_switch,
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video_sink, sink1_sync, sink2_sync, capsfilter, NULL);
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gst_element_link (src1, sink1_sync);
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gst_element_link (sink1_sync, video_switch);
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gst_element_link (src2, capsfilter);
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gst_element_link (capsfilter, sink2_sync);
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gst_element_link (sink2_sync, video_switch);
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gst_element_link (video_switch, segment);
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gst_element_link (segment, /*scaler);
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gst_element_link (scaler, */ video_sink);
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bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
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gst_bus_add_watch (bus, my_bus_callback, NULL);
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gst_object_unref (bus);
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gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
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g_timeout_add (200, (GSourceFunc) switch_timer, video_switch);
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g_main_loop_run (loop);
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gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_READY);
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/* unref */
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gst_object_unref (GST_OBJECT (pipeline));
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exit (0);
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}
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