2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2004,2005 Wim Taymans <wim@fluendo.com>
5 * gstpipeline.c: Overall pipeline management element
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 #include "gst_private.h"
25 #include "gstpipeline.h"
27 #include "gstscheduler.h"
29 static GstElementDetails gst_pipeline_details =
30 GST_ELEMENT_DETAILS ("Pipeline object",
32 "Complete pipeline object",
33 "Erik Walthinsen <omega@cse.ogi.edu>, Wim Taymans <wim@fluendo.com>");
35 /* Pipeline signals and args */
42 #define DEFAULT_DELAY 0
43 #define DEFAULT_PLAY_TIMEOUT (2*GST_SECOND)
51 static void gst_pipeline_base_init (gpointer g_class);
52 static void gst_pipeline_class_init (gpointer g_class, gpointer class_data);
53 static void gst_pipeline_init (GTypeInstance * instance, gpointer g_class);
55 static void gst_pipeline_dispose (GObject * object);
57 static GstElementStateReturn gst_pipeline_change_state (GstElement * element);
59 static GstBinClass *parent_class = NULL;
61 /* static guint gst_pipeline_signals[LAST_SIGNAL] = { 0 }; */
64 gst_pipeline_get_type (void)
66 static GType pipeline_type = 0;
69 static const GTypeInfo pipeline_info = {
70 sizeof (GstPipelineClass),
71 gst_pipeline_base_init,
73 (GClassInitFunc) gst_pipeline_class_init,
83 g_type_register_static (GST_TYPE_BIN, "GstPipeline", &pipeline_info, 0);
89 gst_pipeline_base_init (gpointer g_class)
91 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
93 gst_element_class_set_details (gstelement_class, &gst_pipeline_details);
97 gst_pipeline_class_init (gpointer g_class, gpointer class_data)
99 GObjectClass *gobject_class = G_OBJECT_CLASS (g_class);
100 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
101 GstPipelineClass *klass = GST_PIPELINE_CLASS (g_class);
103 parent_class = g_type_class_peek_parent (klass);
105 gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_pipeline_dispose);
107 gstelement_class->change_state =
108 GST_DEBUG_FUNCPTR (gst_pipeline_change_state);
112 gst_pipeline_init (GTypeInstance * instance, gpointer g_class)
114 GstScheduler *scheduler;
115 GstPipeline *pipeline = GST_PIPELINE (instance);
117 /* pipelines are managing bins */
118 GST_FLAG_SET (pipeline, GST_BIN_FLAG_MANAGER);
120 /* get an instance of the default scheduler */
121 scheduler = gst_scheduler_factory_make (NULL, GST_ELEMENT (pipeline));
123 /* FIXME need better error handling */
124 if (scheduler == NULL) {
125 const gchar *name = gst_scheduler_factory_get_default_name ();
127 g_error ("Critical error: could not get scheduler \"%s\"\n"
128 "Are you sure you have a registry ?\n"
129 "Run gst-register as root if you haven't done so yet.", name);
134 gst_pipeline_dispose (GObject * object)
136 GstPipeline *pipeline = GST_PIPELINE (object);
139 g_assert (GST_IS_SCHEDULER (GST_ELEMENT_SCHEDULER (pipeline)));
140 sched = GST_ELEMENT_SCHEDULER (pipeline);
142 gst_scheduler_reset (sched);
143 G_OBJECT_CLASS (parent_class)->dispose (object);
148 * @name: name of new pipeline
150 * Create a new pipeline with the given name.
152 * Returns: newly created GstPipeline
157 gst_pipeline_new (const gchar * name)
159 return gst_element_factory_make ("pipeline", name);
162 static GstElementStateReturn
163 gst_pipeline_change_state (GstElement * element)
165 switch (GST_STATE_TRANSITION (element)) {
166 case GST_STATE_NULL_TO_READY:
167 gst_scheduler_setup (GST_ELEMENT_SCHEDULER (element));
169 case GST_STATE_READY_TO_PAUSED:
170 case GST_STATE_PAUSED_TO_PLAYING:
171 case GST_STATE_PLAYING_TO_PAUSED:
172 case GST_STATE_PAUSED_TO_READY:
173 case GST_STATE_READY_TO_NULL:
177 if (GST_ELEMENT_CLASS (parent_class)->change_state)
178 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
180 return GST_STATE_SUCCESS;