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 GstElementDetails gst_pipeline_details = {
32 "Complete pipeline object",
34 "Erik Walthinsen <omega@cse.ogi.edu>",
38 /* Pipeline signals and args */
50 static void gst_pipeline_class_init (GstPipelineClass *klass);
51 static void gst_pipeline_init (GstPipeline *pipeline);
53 static void gst_pipeline_dispose (GObject *object);
55 static GstElementStateReturn gst_pipeline_change_state (GstElement *element);
57 static GstBinClass *parent_class = NULL;
58 /* static guint gst_pipeline_signals[LAST_SIGNAL] = { 0 }; */
61 gst_pipeline_get_type (void) {
62 static GType pipeline_type = 0;
65 static const GTypeInfo pipeline_info = {
66 sizeof(GstPipelineClass),
69 (GClassInitFunc)gst_pipeline_class_init,
74 (GInstanceInitFunc)gst_pipeline_init,
77 pipeline_type = g_type_register_static (GST_TYPE_BIN, "GstPipeline", &pipeline_info, 0);
83 gst_pipeline_class_init (GstPipelineClass *klass)
85 GObjectClass *gobject_class;
86 GstElementClass *gstelement_class;
88 gobject_class = (GObjectClass *)klass;
89 gstelement_class = (GstElementClass*)klass;
91 parent_class = g_type_class_ref (gst_bin_get_type ());
93 gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_pipeline_dispose);
95 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_pipeline_change_state);
99 gst_pipeline_init (GstPipeline *pipeline)
101 GstScheduler *scheduler;
103 /* pipelines are managing bins */
104 GST_FLAG_SET (pipeline, GST_BIN_FLAG_MANAGER);
106 /* get an instance of the default scheduler */
107 scheduler = gst_scheduler_factory_make (NULL, GST_ELEMENT (pipeline));
109 /* FIXME need better error handling */
110 if (scheduler == NULL) {
111 const gchar *name = gst_scheduler_factory_get_default_name ();
113 g_error ("Critical error: could not get scheduler \"%s\"\n"
114 "Are you sure you have a registry ?\n"
115 "Run gst-register as root if you haven't done so yet.", name);
120 gst_pipeline_dispose (GObject *object)
122 GstPipeline *pipeline = GST_PIPELINE (object);
124 G_OBJECT_CLASS (parent_class)->dispose (object);
126 gst_object_replace ((GstObject **)&GST_ELEMENT_SCHED (pipeline), NULL);
131 * @name: name of new pipeline
133 * Create a new pipeline with the given name.
135 * Returns: newly created GstPipeline
138 gst_pipeline_new (const gchar *name)
140 return gst_element_factory_make ("pipeline", name);
143 static GstElementStateReturn
144 gst_pipeline_change_state (GstElement *element)
146 switch (GST_STATE_TRANSITION (element)) {
147 case GST_STATE_NULL_TO_READY:
148 gst_scheduler_setup (GST_ELEMENT_SCHED (element));
150 case GST_STATE_READY_TO_PAUSED:
151 case GST_STATE_PAUSED_TO_PLAYING:
152 case GST_STATE_PLAYING_TO_PAUSED:
153 case GST_STATE_PAUSED_TO_READY:
155 case GST_STATE_READY_TO_NULL:
156 /* FIXME: calling gst_scheduler_reset() here is bad, since we
157 * might not be in cothread 0 */
159 if (GST_ELEMENT_SCHED (element)) {
160 gst_scheduler_reset (GST_ELEMENT_SCHED (element));
166 if (GST_ELEMENT_CLASS (parent_class)->change_state)
167 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
169 return GST_STATE_SUCCESS;