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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstpipeline.c: Overall pipeline management element
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "gst_private.h"
#include "gstpipeline.h"
#include "gstinfo.h"
#include "gstscheduler.h"
static GstElementDetails gst_pipeline_details =
GST_ELEMENT_DETAILS ("Pipeline object",
"Generic/Bin",
"Complete pipeline object",
"Erik Walthinsen <omega@cse.ogi.edu>");
/* Pipeline signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0
/* FILL ME */
};
static void gst_pipeline_base_init (gpointer g_class);
static void gst_pipeline_class_init (gpointer g_class, gpointer class_data);
static void gst_pipeline_init (GTypeInstance * instance, gpointer g_class);
static void gst_pipeline_dispose (GObject * object);
static GstElementStateReturn gst_pipeline_change_state (GstElement * element);
static GstBinClass *parent_class = NULL;
/* static guint gst_pipeline_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_pipeline_get_type (void)
{
static GType pipeline_type = 0;
if (!pipeline_type) {
static const GTypeInfo pipeline_info = {
sizeof (GstPipelineClass),
gst_pipeline_base_init,
NULL,
(GClassInitFunc) gst_pipeline_class_init,
NULL,
NULL,
sizeof (GstPipeline),
0,
gst_pipeline_init,
NULL
};
pipeline_type =
g_type_register_static (GST_TYPE_BIN, "GstPipeline", &pipeline_info, 0);
}
return pipeline_type;
}
static void
gst_pipeline_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (gstelement_class, &gst_pipeline_details);
}
static void
gst_pipeline_class_init (gpointer g_class, gpointer class_data)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (g_class);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
GstPipelineClass *klass = GST_PIPELINE_CLASS (g_class);
parent_class = g_type_class_peek_parent (klass);
gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_pipeline_dispose);
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_pipeline_change_state);
}
static void
gst_pipeline_init (GTypeInstance * instance, gpointer g_class)
{
GstScheduler *scheduler;
GstPipeline *pipeline = GST_PIPELINE (instance);
/* pipelines are managing bins */
GST_FLAG_SET (pipeline, GST_BIN_FLAG_MANAGER);
/* get an instance of the default scheduler */
scheduler = gst_scheduler_factory_make (NULL, GST_ELEMENT (pipeline));
/* FIXME need better error handling */
if (scheduler == NULL) {
const gchar *name = gst_scheduler_factory_get_default_name ();
g_error ("Critical error: could not get scheduler \"%s\"\n"
"Are you sure you have a registry ?\n"
"Run gst-register as root if you haven't done so yet.", name);
}
}
static void
gst_pipeline_dispose (GObject * object)
{
GstPipeline *pipeline = GST_PIPELINE (object);
G_OBJECT_CLASS (parent_class)->dispose (object);
gst_object_replace ((GstObject **) & GST_ELEMENT_SCHED (pipeline), NULL);
}
/**
* gst_pipeline_new:
* @name: name of new pipeline
*
* Create a new pipeline with the given name.
*
* Returns: newly created GstPipeline
*/
GstElement *
gst_pipeline_new (const gchar * name)
{
return gst_element_factory_make ("pipeline", name);
}
static GstElementStateReturn
gst_pipeline_change_state (GstElement * element)
{
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
gst_scheduler_setup (GST_ELEMENT_SCHED (element));
break;
case GST_STATE_READY_TO_PAUSED:
case GST_STATE_PAUSED_TO_PLAYING:
case GST_STATE_PLAYING_TO_PAUSED:
case GST_STATE_PAUSED_TO_READY:
break;
case GST_STATE_READY_TO_NULL:
/* FIXME: calling gst_scheduler_reset() here is bad, since we
* might not be in cothread 0 */
#if 0
if (GST_ELEMENT_SCHED (element)) {
gst_scheduler_reset (GST_ELEMENT_SCHED (element));
}
#endif
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
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