gstreamer/gst/gstthread.h

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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
*
* 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__
#include <unistd.h>
#include <pthread.h>
#include <gst/gstbin.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
extern GstElementDetails gst_thread_details;
typedef enum {
GST_THREAD_CREATE = GST_BIN_FLAG_LAST,
GST_THREAD_STATE_STARTED,
GST_THREAD_STATE_SPINNING,
GST_THREAD_STATE_REAPING,
GST_THREAD_STATE_ELEMENT_CHANGED,
/* padding */
GST_THREAD_FLAG_LAST = GST_BIN_FLAG_LAST + 4,
} GstThreadState;
#define GST_TYPE_THREAD \
(gst_thread_get_type())
#define GST_THREAD(obj) \
(GTK_CHECK_CAST((obj),GST_TYPE_THREAD,GstThread))
#define GST_THREAD_CLASS(klass) \
(GTK_CHECK_CLASS_CAST((klass),GST_TYPE_THREAD,GstThreadClass))
#define GST_IS_THREAD(obj) \
(GTK_CHECK_TYPE((obj),GST_TYPE_THREAD))
#define GST_IS_THREAD_CLASS(obj) \
(GTK_CHECK_CLASS_TYPE((klass),GST_TYPE_THREAD))
typedef struct _GstThread GstThread;
typedef struct _GstThreadClass GstThreadClass;
struct _GstThread {
GstBin bin;
pthread_t thread_id; /* id of the thread, if any */
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 */
};
struct _GstThreadClass {
GstBinClass parent_class;
};
GtkType gst_thread_get_type (void);
GstElement* gst_thread_new (const guchar *name);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_THREAD_H__ */