1 /* GStreamer
2 * Copyright (C) <2005> Julien Moutte <julien@moutte.net>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include <gst/gst.h>
25 #include <gst/video/videooverlay.h>
26
27 #include <X11/Xlib.h>
28 #include <X11/Xutil.h>
29
30 #include <math.h>
31 #include <sys/time.h>
32
33 static GMainLoop *loop;
34
35 static Display *disp;
36 static Window root, win = 0;
37 static GC gc;
38 static gint width = 320, height = 240, x = 0, y = 0;
39 static gint disp_width, disp_height;
40
41 static inline long
myclock(void)42 myclock (void)
43 {
44 struct timeval tv;
45
46 gettimeofday (&tv, NULL);
47 return (tv.tv_sec * 1000 + tv.tv_usec / 1000);
48 }
49
50 static void
open_display(void)51 open_display (void)
52 {
53 gint screen_num;
54
55 disp = XOpenDisplay (NULL);
56 root = DefaultRootWindow (disp);
57 screen_num = DefaultScreen (disp);
58 disp_width = DisplayWidth (disp, screen_num);
59 disp_height = DisplayHeight (disp, screen_num);
60 }
61
62 static void
close_display(void)63 close_display (void)
64 {
65 XCloseDisplay (disp);
66 }
67
68 static gboolean
resize_window(GstPipeline * pipeline)69 resize_window (GstPipeline * pipeline)
70 {
71 width = (sin (myclock () / 300.0) * 200) + 640;
72 height = (sin (myclock () / 300.0) * 200) + 480;
73
74 XResizeWindow (disp, win, width, height);
75
76 XSync (disp, FALSE);
77
78 return TRUE;
79 }
80
81 static gboolean
move_window(GstPipeline * pipeline)82 move_window (GstPipeline * pipeline)
83 {
84 x += 5;
85 y = disp_height - height + (sin (myclock () / 300.0) * height);
86 if (x > disp_width)
87 x = 0;
88
89 XMoveWindow (disp, win, x, y);
90
91 XSync (disp, FALSE);
92
93 return TRUE;
94 }
95
96 static gboolean
toggle_events(GstVideoOverlay * ov)97 toggle_events (GstVideoOverlay * ov)
98 {
99 static gboolean events_toggled;
100
101 gst_video_overlay_handle_events (ov, events_toggled);
102
103 if (events_toggled) {
104 g_print ("Events are handled\n");
105 events_toggled = FALSE;
106 } else {
107 g_print ("Events are NOT handled\n");
108 events_toggled = TRUE;
109 }
110
111 return TRUE;
112 }
113
114 static gboolean
cycle_window(GstVideoOverlay * ov)115 cycle_window (GstVideoOverlay * ov)
116 {
117 XGCValues values;
118 Window old_win = win;
119 GC old_gc = gc;
120
121 win = XCreateSimpleWindow (disp, root, 0, 0, width, height, 0, 0, 0);
122
123 XSetWindowBackgroundPixmap (disp, win, None);
124
125 gc = XCreateGC (disp, win, 0, &values);
126
127 XMapRaised (disp, win);
128
129 XSync (disp, FALSE);
130
131 gst_video_overlay_set_window_handle (ov, win);
132
133 if (old_win) {
134 XDestroyWindow (disp, old_win);
135 XFreeGC (disp, old_gc);
136 XSync (disp, FALSE);
137 }
138
139 return TRUE;
140 }
141
142 static GstBusSyncReply
create_window(GstBus * bus,GstMessage * message,GstPipeline * pipeline)143 create_window (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
144 {
145 GstVideoOverlay *ov = NULL;
146
147 if (!gst_is_video_overlay_prepare_window_handle_message (message))
148 return GST_BUS_PASS;
149
150 ov = GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message));
151
152 g_print ("Creating our own window\n");
153
154 cycle_window (ov);
155
156 g_timeout_add (50, (GSourceFunc) resize_window, pipeline);
157 g_timeout_add (50, (GSourceFunc) move_window, pipeline);
158 g_timeout_add (100, (GSourceFunc) cycle_window, ov);
159 g_timeout_add_seconds (2, (GSourceFunc) toggle_events, ov);
160
161 gst_message_unref (message);
162 return GST_BUS_DROP;
163 }
164
165 #if 0
166 static gboolean
167 terminate_playback (GstElement * pipeline)
168 {
169 g_print ("Terminating playback\n");
170 g_main_loop_quit (loop);
171 return FALSE;
172 }
173 #endif
174
175 static gboolean
pause_playback(GstElement * pipeline)176 pause_playback (GstElement * pipeline)
177 {
178 g_print ("Pausing playback\n");
179 gst_element_set_state (pipeline, GST_STATE_PAUSED);
180 return FALSE;
181 }
182
183 static gboolean
start_playback(GstElement * pipeline)184 start_playback (GstElement * pipeline)
185 {
186 g_print ("Starting playback\n");
187 gst_element_set_state (pipeline, GST_STATE_PLAYING);
188 return FALSE;
189 }
190
191 int
main(int argc,char ** argv)192 main (int argc, char **argv)
193 {
194 GstElement *pipeline;
195 GstBus *bus;
196
197 #ifndef GST_DISABLE_PARSE
198 GError *error = NULL;
199 #endif
200
201 gst_init (&argc, &argv);
202
203 if (argc != 2) {
204 g_print ("Usage: %s \"pipeline description with launch format\"\n",
205 argv[0]);
206 g_print
207 ("The pipeline should contain an element implementing GstVideoOverlay.\n");
208 g_print ("Example: %s \"videotestsrc ! ximagesink\"\n", argv[0]);
209 return -1;
210 }
211 #ifdef GST_DISABLE_PARSE
212 g_print ("GStreamer was built without pipeline parsing capabilities.\n");
213 g_print
214 ("Please rebuild GStreamer with pipeline parsing capabilities activated to use this example.\n");
215 return 1;
216 #else
217 pipeline = gst_parse_launch (argv[1], &error);
218 if (error) {
219 g_print ("Error while parsing pipeline description: %s\n", error->message);
220 return -1;
221 }
222 #endif
223
224 loop = g_main_loop_new (NULL, FALSE);
225
226 open_display ();
227
228 bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
229 gst_bus_set_sync_handler (bus, (GstBusSyncHandler) create_window, pipeline,
230 NULL);
231
232 gst_element_set_state (pipeline, GST_STATE_PLAYING);
233
234 /* We want to get out after */
235 //g_timeout_add (500000, (GSourceFunc) terminate_playback, pipeline);
236 g_timeout_add_seconds (10, (GSourceFunc) pause_playback, pipeline);
237 g_timeout_add_seconds (20, (GSourceFunc) start_playback, pipeline);
238
239 g_main_loop_run (loop);
240
241 close_display ();
242
243 g_main_loop_unref (loop);
244
245 gst_object_unref (bus);
246
247 return 0;
248 }
249