gstthread.h 2.51 KB
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/* GStreamer
 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
 *                    2000 Wim Taymans <wtay@chello.be>
 *
 * gstthread.h: Header for GstThread object
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 *
 * 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.
 */


#ifndef __GST_THREAD_H__
#define __GST_THREAD_H__

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#include <glib.h>
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#include <gst/gstbin.h>
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G_BEGIN_DECLS
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extern GstElementDetails gst_thread_details;
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typedef enum {
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  GST_THREAD_STATE_STARTED	= GST_BIN_FLAG_LAST,
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  GST_THREAD_STATE_SPINNING,
  GST_THREAD_STATE_REAPING,

  /* padding */
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  GST_THREAD_FLAG_LAST 		= GST_BIN_FLAG_LAST + 4
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} GstThreadState;


#define GST_TYPE_THREAD \
  (gst_thread_get_type())
#define GST_THREAD(obj) \
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  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_THREAD,GstThread))
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#define GST_THREAD_CLASS(klass) \
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  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_THREAD,GstThreadClass))
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#define GST_IS_THREAD(obj) \
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  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_THREAD))
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#define GST_IS_THREAD_CLASS(obj) \
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  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_THREAD))
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typedef struct _GstThread 	GstThread;
typedef struct _GstThreadClass 	GstThreadClass;
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struct _GstThread {
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  GstBin 	 bin;

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  GThread 	*thread_id;		/* id of the thread, if any */
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  int 		 sched_policy;
  int 		 priority;
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  gpointer	*stack;			/* set with gst_scheduler_get_preferred_stack */
  guint 	 stack_size;		/* stack size */
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  gint		 pid;			/* the pid of the thread */
  gint		 ppid;			/* the pid of the thread's parent process */
  GMutex 	*lock;			/* thread lock/condititon pair ... */
  GCond 	*cond;			/* .... used to control the thread */

  gint		 transition;		/* the current state transition */
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};

struct _GstThreadClass {
  GstBinClass parent_class;
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  /* signals */
  void	(*shutdown)	(GstThread *thread);
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};

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GType 	gst_thread_get_type	(void);
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GstElement*	gst_thread_new		(const gchar *name);
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G_END_DECLS
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#endif /* __GST_THREAD_H__ */