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157 lines
3.8 KiB
C
157 lines
3.8 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstpipeline.c: Overall pipeline management element
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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//#define GST_DEBUG_ENABLED
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#include "gst_private.h"
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#include "gstpipeline.h"
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GstElementDetails gst_pipeline_details = {
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"Pipeline object",
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"Bin",
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"Complete pipeline object",
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VERSION,
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"Erik Walthinsen <omega@cse.ogi.edu>",
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"(C) 1999",
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};
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/* Pipeline signals and args */
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enum {
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/* FILL ME */
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LAST_SIGNAL
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};
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enum {
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ARG_0,
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/* FILL ME */
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};
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static void gst_pipeline_class_init (GstPipelineClass *klass);
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static void gst_pipeline_init (GstPipeline *pipeline);
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static GstElementStateReturn gst_pipeline_change_state (GstElement *element);
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static void gst_pipeline_prepare (GstPipeline *pipeline);
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static GstBinClass *parent_class = NULL;
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//static guint gst_pipeline_signals[LAST_SIGNAL] = { 0 };
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GtkType
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gst_pipeline_get_type (void) {
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static GtkType pipeline_type = 0;
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if (!pipeline_type) {
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static const GtkTypeInfo pipeline_info = {
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"GstPipeline",
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sizeof(GstPipeline),
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sizeof(GstPipelineClass),
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(GtkClassInitFunc)gst_pipeline_class_init,
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(GtkObjectInitFunc)gst_pipeline_init,
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(GtkArgSetFunc)NULL,
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(GtkArgGetFunc)NULL,
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(GtkClassInitFunc)NULL,
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};
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pipeline_type = gtk_type_unique (gst_bin_get_type (), &pipeline_info);
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}
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return pipeline_type;
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}
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static void
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gst_pipeline_class_init (GstPipelineClass *klass)
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{
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GstElementClass *gstelement_class;
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gstelement_class = (GstElementClass*)klass;
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parent_class = gtk_type_class(gst_bin_get_type());
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gstelement_class->change_state = gst_pipeline_change_state;
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}
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static void
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gst_pipeline_init (GstPipeline *pipeline)
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{
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// we're a manager by default
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GST_FLAG_SET (pipeline, GST_BIN_FLAG_MANAGER);
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}
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/**
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* gst_pipeline_new:
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* @name: name of new pipeline
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*
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* Create a new pipeline with the given name.
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*
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* Returns: newly created GstPipeline
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*/
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GstElement*
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gst_pipeline_new (guchar *name)
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{
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return gst_elementfactory_make ("pipeline", name);
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}
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static void
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gst_pipeline_prepare (GstPipeline *pipeline)
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{
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GST_DEBUG (0,"GstPipeline: preparing pipeline \"%s\" for playing\n",
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GST_ELEMENT_NAME(GST_ELEMENT(pipeline)));
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}
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static GstElementStateReturn
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gst_pipeline_change_state (GstElement *element)
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{
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GstPipeline *pipeline;
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g_return_val_if_fail (GST_IS_PIPELINE (element), FALSE);
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pipeline = GST_PIPELINE (element);
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switch (GST_STATE_TRANSITION (pipeline)) {
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case GST_STATE_NULL_TO_READY:
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// we need to set up internal state
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gst_pipeline_prepare (pipeline);
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break;
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default:
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break;
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}
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if (GST_ELEMENT_CLASS (parent_class)->change_state)
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return GST_ELEMENT_CLASS (parent_class)->change_state (element);
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return GST_STATE_SUCCESS;
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}
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/**
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* gst_pipeline_iterate:
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* @pipeline: #GstPipeline to iterate
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*
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* Cause the pipeline's contents to be run through one full 'iteration'.
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*/
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void
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gst_pipeline_iterate (GstPipeline *pipeline)
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{
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g_return_if_fail (pipeline != NULL);
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g_return_if_fail (GST_IS_PIPELINE(pipeline));
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}
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