2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
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 = GST_ELEMENT_DETAILS (
32 "Complete pipeline object",
33 "Erik Walthinsen <omega@cse.ogi.edu>"
36 /* Pipeline signals and args */
48 static void gst_pipeline_base_init (gpointer g_class);
49 static void gst_pipeline_class_init (gpointer g_class,
51 static void gst_pipeline_init (GTypeInstance *instance,
54 static void gst_pipeline_dispose (GObject * object);
56 static GstElementStateReturn gst_pipeline_change_state (GstElement * element);
58 static GstBinClass *parent_class = NULL;
59 /* static guint gst_pipeline_signals[LAST_SIGNAL] = { 0 }; */
62 gst_pipeline_get_type (void) {
63 static GType pipeline_type = 0;
66 static const GTypeInfo pipeline_info = {
67 sizeof(GstPipelineClass),
68 gst_pipeline_base_init,
70 (GClassInitFunc)gst_pipeline_class_init,
78 pipeline_type = g_type_register_static (GST_TYPE_BIN, "GstPipeline", &pipeline_info, 0);
84 gst_pipeline_base_init (gpointer g_class)
86 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
88 gst_element_class_set_details (gstelement_class, &gst_pipeline_details);
92 gst_pipeline_class_init (gpointer g_class, gpointer class_data)
94 GObjectClass *gobject_class = G_OBJECT_CLASS (g_class);
95 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
96 GstPipelineClass *klass = GST_PIPELINE_CLASS (g_class);
98 parent_class = g_type_class_peek_parent (klass);
100 gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_pipeline_dispose);
102 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_pipeline_change_state);
106 gst_pipeline_init (GTypeInstance *instance, gpointer g_class)
108 GstScheduler *scheduler;
109 GstPipeline *pipeline = GST_PIPELINE (instance);
111 /* pipelines are managing bins */
112 GST_FLAG_SET (pipeline, GST_BIN_FLAG_MANAGER);
114 /* get an instance of the default scheduler */
115 scheduler = gst_scheduler_factory_make (NULL, GST_ELEMENT (pipeline));
117 /* FIXME need better error handling */
118 if (scheduler == NULL) {
119 const gchar *name = gst_scheduler_factory_get_default_name ();
121 g_error ("Critical error: could not get scheduler \"%s\"\n"
122 "Are you sure you have a registry ?\n"
123 "Run gst-register as root if you haven't done so yet.", name);
128 gst_pipeline_dispose (GObject *object)
130 GstPipeline *pipeline = GST_PIPELINE (object);
132 G_OBJECT_CLASS (parent_class)->dispose (object);
134 gst_object_replace ((GstObject **)&GST_ELEMENT_SCHED (pipeline), NULL);
139 * @name: name of new pipeline
141 * Create a new pipeline with the given name.
143 * Returns: newly created GstPipeline
146 gst_pipeline_new (const gchar *name)
148 return gst_element_factory_make ("pipeline", name);
151 static GstElementStateReturn
152 gst_pipeline_change_state (GstElement *element)
154 switch (GST_STATE_TRANSITION (element)) {
155 case GST_STATE_NULL_TO_READY:
156 gst_scheduler_setup (GST_ELEMENT_SCHED (element));
158 case GST_STATE_READY_TO_PAUSED:
159 case GST_STATE_PAUSED_TO_PLAYING:
160 case GST_STATE_PLAYING_TO_PAUSED:
161 case GST_STATE_PAUSED_TO_READY:
163 case GST_STATE_READY_TO_NULL:
164 /* FIXME: calling gst_scheduler_reset() here is bad, since we
165 * might not be in cothread 0 */
167 if (GST_ELEMENT_SCHED (element)) {
168 gst_scheduler_reset (GST_ELEMENT_SCHED (element));
174 if (GST_ELEMENT_CLASS (parent_class)->change_state)
175 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
177 return GST_STATE_SUCCESS;