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>
G_BEGIN_DECLS
extern GstElementDetails gst_thread_details;
typedef enum {
- some fixes to int2float making automake 1.5 happy (gst now requires automake1.5). It's still not perfect but it bui... Original commit message from CVS: - added playondemand plugin by Leif Morgan Johnson <lmjohns3@eos.ncsu.edu> - some fixes to int2float - aplied a patch from wrobell <wrobell@ite.pl> that is a first attempt at making automake 1.5 happy (gst now requires automake1.5). It's still not perfect but it builds. - Made the schedulers plugable. The default scheduler now lives inside a plugin. - Added a new mpeg1/2 parser/demuxer. - Fixed some compiler warnings in the core libs. - substantial work to GstThread (hopefully less race conditions). simplified the code in GstThread a bit. A state change can now also happen in the thread context. - reworked the state semantics of a bin. it'll now automatically get the highest state of its children. - the autoplugger now nests the threads so that a state change failure of one thread doesn't make its upstream thread lock. - GstQueue refuses to go to PLAYING if the sinkpad is not connected. This way the queue will not wedge in the _get lock. - GstQueue unlocks its mutexes when going to PAUSED. - make sure that when all elements in a bin/thread go to PAUSED, the bin is set to PAUSED too. - make a parent bin wait for its children to PAUSE before ending the iteration with FALSE (EOS) - Some changes to GstPlay to deal with EOS. - aplied the latest patch from Zeenix to gstrtp. end result: GstPlay doesn't crash on EOS and the pipeline is now shut down properly.
2001-12-04 22:12:50 +00:00
GST_THREAD_STATE_STARTED = GST_BIN_FLAG_LAST,
GST_THREAD_STATE_SPINNING,
GST_THREAD_STATE_REAPING,
/* padding */
GST_THREAD_FLAG_LAST = GST_BIN_FLAG_LAST + 4
} GstThreadState;
#define GST_TYPE_THREAD \
(gst_thread_get_type())
#define GST_THREAD(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_THREAD,GstThread))
#define GST_THREAD_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_THREAD,GstThreadClass))
#define GST_IS_THREAD(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_THREAD))
#define GST_IS_THREAD_CLASS(obj) \
(G_TYPE_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 */
pthread_attr_t attr; /* attributes for the stack space */
int sched_policy;
int priority;
void *stack; /* set with gst_scheduler_get_preferred_stack */
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;
/* signals */
void (*shutdown) (GstThread *thread);
};
GType gst_thread_get_type (void);
GstElement* gst_thread_new (const gchar *name);
G_END_DECLS
#endif /* __GST_THREAD_H__ */