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/* GStreamer
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* Copyright (C) <2005> 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 <gst/gst.h>
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#include <gst/video/videooverlay.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <math.h>
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#include <sys/time.h>
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static GMainLoop *loop;
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static Display *disp;
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static Window root, win = 0;
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static GC gc;
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static gint width = 320, height = 240, x = 0, y = 0;
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static gint disp_width, disp_height;
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static inline long
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myclock (void)
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{
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struct timeval tv;
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gettimeofday (&tv, NULL);
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return (tv.tv_sec * 1000 + tv.tv_usec / 1000);
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}
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static void
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open_display (void)
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{
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gint screen_num;
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disp = XOpenDisplay (NULL);
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root = DefaultRootWindow (disp);
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screen_num = DefaultScreen (disp);
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disp_width = DisplayWidth (disp, screen_num);
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disp_height = DisplayHeight (disp, screen_num);
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}
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static void
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close_display (void)
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{
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XCloseDisplay (disp);
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}
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static gboolean
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resize_window (GstPipeline * pipeline)
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{
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width = (sin (myclock () / 300.0) * 200) + 640;
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height = (sin (myclock () / 300.0) * 200) + 480;
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XResizeWindow (disp, win, width, height);
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XSync (disp, FALSE);
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return TRUE;
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}
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static gboolean
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move_window (GstPipeline * pipeline)
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{
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x += 5;
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y = disp_height - height + (sin (myclock () / 300.0) * height);
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if (x > disp_width)
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x = 0;
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XMoveWindow (disp, win, x, y);
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XSync (disp, FALSE);
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return TRUE;
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}
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static gboolean
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toggle_events (GstVideoOverlay * ov)
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{
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static gboolean events_toggled;
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gst_video_overlay_handle_events (ov, events_toggled);
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if (events_toggled) {
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g_print ("Events are handled\n");
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events_toggled = FALSE;
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} else {
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g_print ("Events are NOT handled\n");
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events_toggled = TRUE;
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}
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return TRUE;
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}
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static gboolean
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cycle_window (GstVideoOverlay * ov)
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{
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XGCValues values;
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Window old_win = win;
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GC old_gc = gc;
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win = XCreateSimpleWindow (disp, root, 0, 0, width, height, 0, 0, 0);
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XSetWindowBackgroundPixmap (disp, win, None);
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gc = XCreateGC (disp, win, 0, &values);
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XMapRaised (disp, win);
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XSync (disp, FALSE);
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gst_video_overlay_set_window_handle (ov, win);
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if (old_win) {
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XDestroyWindow (disp, old_win);
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XFreeGC (disp, old_gc);
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XSync (disp, FALSE);
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}
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return TRUE;
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}
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static GstBusSyncReply
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create_window (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
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{
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GstVideoOverlay *ov = NULL;
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if (!gst_is_video_overlay_prepare_window_handle_message (message))
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return GST_BUS_PASS;
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ov = GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message));
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g_print ("Creating our own window\n");
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cycle_window (ov);
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g_timeout_add (50, (GSourceFunc) resize_window, pipeline);
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g_timeout_add (50, (GSourceFunc) move_window, pipeline);
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g_timeout_add (100, (GSourceFunc) cycle_window, ov);
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g_timeout_add_seconds (2, (GSourceFunc) toggle_events, ov);
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gst_message_unref (message);
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return GST_BUS_DROP;
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}
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#if 0
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static gboolean
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terminate_playback (GstElement * pipeline)
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{
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g_print ("Terminating playback\n");
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g_main_loop_quit (loop);
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return FALSE;
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}
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#endif
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static gboolean
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pause_playback (GstElement * pipeline)
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{
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g_print ("Pausing playback\n");
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gst_element_set_state (pipeline, GST_STATE_PAUSED);
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return FALSE;
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}
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static gboolean
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start_playback (GstElement * pipeline)
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{
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g_print ("Starting playback\n");
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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return FALSE;
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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;
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GstBus *bus;
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#ifndef GST_DISABLE_PARSE
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GError *error = NULL;
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#endif
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gst_init (&argc, &argv);
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if (argc != 2) {
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g_print ("Usage: %s \"pipeline description with launch format\"\n",
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argv[0]);
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g_print
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("The pipeline should contain an element implementing GstVideoOverlay.\n");
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g_print ("Example: %s \"videotestsrc ! ximagesink\"\n", argv[0]);
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return -1;
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}
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#ifdef GST_DISABLE_PARSE
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g_print ("GStreamer was built without pipeline parsing capabilities.\n");
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g_print
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("Please rebuild GStreamer with pipeline parsing capabilities activated to use this example.\n");
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return 1;
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#else
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pipeline = gst_parse_launch (argv[1], &error);
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if (error) {
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g_print ("Error while parsing pipeline description: %s\n", error->message);
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return -1;
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}
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#endif
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loop = g_main_loop_new (NULL, FALSE);
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open_display ();
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bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
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gst_bus_set_sync_handler (bus, (GstBusSyncHandler) create_window, pipeline,
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NULL);
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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/* We want to get out after */
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//g_timeout_add (500000, (GSourceFunc) terminate_playback, pipeline);
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g_timeout_add_seconds (10, (GSourceFunc) pause_playback, pipeline);
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g_timeout_add_seconds (20, (GSourceFunc) start_playback, pipeline);
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g_main_loop_run (loop);
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close_display ();
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g_main_loop_unref (loop);
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gst_object_unref (bus);
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return 0;
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}
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