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087dee1f62
Original commit message from CVS: This is an attempt at not segfaulting on errors but reporting some usefull info instead. - bin changes so errors can propagate. - changed the _FAST macros to _CAST because that is what they do. - removed all references to cothreads out of the core, they are really a scheduler issue, handler with a sched_private gpointer. - added a live buffer count, for debugging buffer leaks. - added error checking in gst_scheduler_state_transition this solves the "out of cothreads" problem. - GST_ELEMENT_NO_ENTRY == GST_ELEMENT_INFINITE_LOOP - added 2 private element flasg for use by the scheduler (_COTHREAD_STOPPING) is now - added scheduler entry points: - _yield : to create possible scheduling points. - _interrupt: to stop execution of an element. - _error: to signal en error condition to the scheduler. - improved error messages for pads. - signal gst_element_error where appropriate. - added the a new bin to the parent before entering it so one can reference its children. - queue memleak fixes on dispose. - added possible deadlock detection in queue (turned off be default) - GstBasicScheduler is a real class of its own now, hiding its internal variables. - GST_ELEMENT_IS_COTHREAD_STOPPING is gone. either call explicit _yield operations, or make a sane loop. - Better state change handling in filesrc. Better error reporting/recovery too. - updated core plugins. - detect non decoupled elements on scheduler boundries and error.
104 lines
2.9 KiB
C
104 lines
2.9 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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* gstqueue.h:
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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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#ifndef __GST_QUEUE_H__
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#define __GST_QUEUE_H__
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#include <gst/gstelement.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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GstElementDetails gst_queue_details;
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#define GST_TYPE_QUEUE \
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(gst_queue_get_type())
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#define GST_QUEUE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QUEUE,GstQueue))
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#define GST_QUEUE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QUEUE,GstQueueClass))
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#define GST_IS_QUEUE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QUEUE))
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#define GST_IS_QUEUE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QUEUE))
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enum {
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GST_QUEUE_NO_LEAK = 0,
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GST_QUEUE_LEAK_UPSTREAM = 1,
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GST_QUEUE_LEAK_DOWNSTREAM = 2
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};
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typedef struct _GstQueue GstQueue;
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typedef struct _GstQueueClass GstQueueClass;
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struct _GstQueue {
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GstElement element;
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GstPad *sinkpad;
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GstPad *srcpad;
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/* the queue of buffers we're keeping our grubby hands on */
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GSList *queue;
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gint level_buffers; /* number of buffers queued here */
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gint level_bytes; /* number of bytes queued here */
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guint64 level_time; /* amount of time queued here */
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gint size_buffers; /* size of queue in buffers */
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gint size_bytes; /* size of queue in bytes */
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guint64 size_time; /* size of queue in time */
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gint leaky; /* whether the queue is leaky, and if so at which end */
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gboolean may_deadlock; /* it the queue should fail on possible deadlocks */
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GMutex *qlock; /* lock for queue (vs object lock) */
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/* we are single reader and single writer queue */
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gboolean reader; /* reader waiting on empty queue */
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gboolean writer; /* writer waiting on full queue */
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GCond *not_empty; /* signals buffers now available for reading */
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GCond *not_full; /* signals space now available for writing */
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GTimeVal *timeval; /* the timeout for the queue locking */
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};
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struct _GstQueueClass {
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GstElementClass parent_class;
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/* signal callbacks */
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void (*low_watermark) (GstQueue *queue, gint level);
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void (*high_watermark) (GstQueue *queue, gint level);
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};
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GType gst_queue_get_type (void);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GST_QUEUE_H__ */
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