1 /* GStreamer interactive test for the gdkpixbufsink element
2 * Copyright (C) 2008 Tim-Philipp Müller <tim centricular net>
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.
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.
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., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
36 GtkWidget *accurate_cb;
38 gboolean accurate; /* whether to try accurate seeks */
44 static void seek_to (AppInfo * info, gdouble percent);
47 create_element (const gchar * factory_name)
51 element = gst_element_factory_make (factory_name, NULL);
54 g_error ("Failed to create '%s' element", factory_name);
60 new_decoded_pad (GstElement * dec, GstPad * new_pad, gboolean last,
64 GstElement *csp, *scale, *filter;
69 /* already found a video stream? */
73 /* FIXME: is this racy or does decodebin2 make sure caps are always
74 * negotiated at this point? */
75 caps = gst_pad_query_caps (new_pad, NULL);
76 g_return_if_fail (caps != NULL);
78 s = gst_caps_get_structure (caps, 0);
79 sname = gst_structure_get_name (s);
80 if (!g_str_has_prefix (sname, "video/x-raw-"))
83 csp = create_element ("videoconvert");
84 scale = create_element ("videoscale");
85 filter = create_element ("capsfilter");
86 info->sink = create_element ("gdkpixbufsink");
87 g_object_set (info->sink, "qos", FALSE, "max-lateness", (gint64) - 1, NULL);
89 gst_bin_add_many (GST_BIN (info->pipe), csp, scale, filter, info->sink, NULL);
91 sinkpad = gst_element_get_static_pad (csp, "sink");
92 if (GST_PAD_LINK_FAILED (gst_pad_link (new_pad, sinkpad)))
93 g_error ("Can't link new decoded pad to videoconvert's sink pad");
94 gst_object_unref (sinkpad);
96 if (!gst_element_link (csp, scale))
97 g_error ("Can't link videoconvert to videoscale");
98 if (!gst_element_link (scale, filter))
99 g_error ("Can't link videoscale to capsfilter");
100 if (!gst_element_link (filter, info->sink))
101 g_error ("Can't link capsfilter to gdkpixbufsink");
103 gst_element_set_state (info->sink, GST_STATE_PAUSED);
104 gst_element_set_state (filter, GST_STATE_PAUSED);
105 gst_element_set_state (scale, GST_STATE_PAUSED);
106 gst_element_set_state (csp, GST_STATE_PAUSED);
108 info->got_video = TRUE;
114 g_error ("This file does not contain a video track, or you do not have "
115 "the necessary decoder(s) installed");
121 bus_message_cb (GstBus * bus, GstMessage * msg, AppInfo * info)
123 switch (GST_MESSAGE_TYPE (msg)) {
124 case GST_MESSAGE_ASYNC_DONE:{
125 /* only interested in async-done messages from the top-level pipeline */
126 if (msg->src != GST_OBJECT_CAST (info->pipe))
129 if (!info->prerolled) {
130 /* make slider visible if it's not visible already */
131 gtk_widget_show (info->slider);
133 /* initial frame is often black, so seek to beginning plus a bit */
134 seek_to (info, 0.001);
135 info->prerolled = TRUE;
138 /* update position */
139 if (!gst_element_query_position (info->pipe, GST_FORMAT_TIME,
144 case GST_MESSAGE_ELEMENT:{
146 GdkPixbuf *pixbuf = NULL;
147 const GstStructure *structure;
149 /* only interested in element messages from our gdkpixbufsink */
150 if (msg->src != GST_OBJECT_CAST (info->sink))
153 /* only interested in these two messages */
154 if (!gst_message_has_name (msg, "preroll-pixbuf") &&
155 !gst_message_has_name (msg, "pixbuf")) {
159 g_print ("pixbuf\n");
160 structure = gst_message_get_structure (msg);
161 val = gst_structure_get_value (structure, "pixbuf");
162 g_return_if_fail (val != NULL);
164 pixbuf = GDK_PIXBUF (g_value_dup_object (val));
165 gtk_image_set_from_pixbuf (GTK_IMAGE (info->img), pixbuf);
166 g_object_unref (pixbuf);
169 case GST_MESSAGE_ERROR:{
173 gst_message_parse_error (msg, &err, &dbg);
174 g_error ("Error: %s\n%s\n", err->message, (dbg) ? dbg : "");
185 create_pipeline (AppInfo * info, const gchar * filename)
187 GstElement *src, *dec;
190 info->pipe = gst_pipeline_new ("pipeline");
191 src = create_element ("filesrc");
192 g_object_set (src, "location", filename, NULL);
194 dec = create_element ("decodebin2");
196 gst_bin_add_many (GST_BIN (info->pipe), src, dec, NULL);
197 if (!gst_element_link (src, dec))
198 g_error ("Can't link filesrc to decodebin2");
200 g_signal_connect (dec, "new-decoded-pad", G_CALLBACK (new_decoded_pad), info);
203 bus = gst_element_get_bus (info->pipe);
204 gst_bus_add_signal_watch (bus);
205 g_signal_connect (bus, "message", G_CALLBACK (bus_message_cb), info);
206 gst_object_unref (bus);
212 seek_to (AppInfo * info, gdouble percent)
214 GstSeekFlags seek_flags;
215 gint64 seek_pos, dur = -1;
217 if (!gst_element_query_duration (info->pipe, GST_FORMAT_TIME, &dur)
219 g_printerr ("Could not query duration\n");
223 seek_pos = gst_gdouble_to_guint64 (gst_guint64_to_gdouble (dur) * percent);
224 g_print ("Seeking to %" GST_TIME_FORMAT ", accurate: %d\n",
225 GST_TIME_ARGS (seek_pos), info->accurate);
227 seek_flags = GST_SEEK_FLAG_FLUSH;
230 seek_flags |= GST_SEEK_FLAG_ACCURATE;
232 seek_flags |= GST_SEEK_FLAG_KEY_UNIT;
234 if (!gst_element_seek_simple (info->pipe, GST_FORMAT_TIME, seek_flags,
236 g_printerr ("Seek failed.\n");
242 slider_cb (GtkRange * range, AppInfo * info)
246 val = gtk_range_get_value (range);
251 slider_format_value_cb (GtkScale * scale, gdouble value, AppInfo * info)
255 if (info->cur_pos < 0)
256 return g_strdup_printf ("%0.1g%%", value * 100.0);
258 g_snprintf (s, 64, "%" GST_TIME_FORMAT, GST_TIME_ARGS (info->cur_pos));
264 accurate_toggled_cb (GtkToggleButton * toggle, AppInfo * info)
266 info->accurate = gtk_toggle_button_get_active (toggle);
270 run_gui (const gchar * filename)
272 GtkWidget *vbox, *hbox;
275 info = g_new0 (AppInfo, 1);
277 /* create pipeline */
278 if (!create_pipeline (info, filename))
282 info->win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
283 g_signal_connect (info->win, "delete-event", G_CALLBACK (gtk_main_quit),
286 vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
287 gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
288 gtk_container_add (GTK_CONTAINER (info->win), vbox);
290 info->img = gtk_image_new ();
291 gtk_box_pack_start (GTK_BOX (vbox), info->img, FALSE, FALSE, 6);
293 hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
294 gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 6);
296 info->accurate_cb = gtk_check_button_new_with_label ("accurate seek "
297 "(might not work reliably with all demuxers)");
298 gtk_box_pack_start (GTK_BOX (hbox), info->accurate_cb, FALSE, FALSE, 6);
299 g_signal_connect (info->accurate_cb, "toggled",
300 G_CALLBACK (accurate_toggled_cb), info);
302 info->slider = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL,
304 gtk_box_pack_start (GTK_BOX (vbox), info->slider, FALSE, FALSE, 6);
305 g_signal_connect (info->slider, "value-changed",
306 G_CALLBACK (slider_cb), info);
307 g_signal_connect (info->slider, "format-value",
308 G_CALLBACK (slider_format_value_cb), info);
311 gst_element_set_state (info->pipe, GST_STATE_PAUSED);
313 gtk_widget_show_all (info->win);
314 gtk_widget_hide (info->slider); /* hide until we're prerolled */
322 static gchar **filenames = NULL;
325 main (int argc, char **argv)
327 static const GOptionEntry test_goptions[] = {
328 {G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &filenames, NULL},
329 {NULL, '\0', 0, 0, NULL, NULL, NULL}
332 GError *opt_err = NULL;
334 gtk_init (&argc, &argv);
336 /* command line option parsing */
337 ctx = g_option_context_new (" VIDEOFILE");
338 g_option_context_add_group (ctx, gst_init_get_option_group ());
339 g_option_context_add_main_entries (ctx, test_goptions, NULL);
341 if (!g_option_context_parse (ctx, &argc, &argv, &opt_err)) {
342 g_error ("Error parsing command line options: %s", opt_err->message);
346 if (filenames == NULL || filenames[0] == NULL || filenames[0][0] == '\0') {
347 g_printerr ("Please specify a path to a video file\n\n");
351 run_gui (filenames[0]);
354 g_option_context_free (ctx);