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99dd9830a9
Add support for buffering mode where we post BUFFERING messages based on the level of the queues. It currently operates on the first queue that goes over or under the high/low thresholds.
90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/* GStreamer
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* Copyright (C) 2006 Edward Hervey <edward@fluendo.com>
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*
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* gstmultiqueue.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_MULTI_QUEUE_H__
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#define __GST_MULTI_QUEUE_H__
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#include <gst/gst.h>
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#include <gst/base/gstdataqueue.h>
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G_BEGIN_DECLS
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#define GST_TYPE_MULTI_QUEUE \
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(gst_multi_queue_get_type())
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#define GST_MULTI_QUEUE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MULTI_QUEUE,GstMultiQueue))
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#define GST_MULTI_QUEUE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MULTI_QUEUE,GstMultiQueueClass))
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#define GST_IS_MULTI_QUEUE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULTI_QUEUE))
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#define GST_IS_MULTI_QUEUE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULTI_QUEUE))
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typedef struct _GstMultiQueue GstMultiQueue;
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typedef struct _GstMultiQueueClass GstMultiQueueClass;
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/**
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* GstMultiQueue:
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*
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* Opaque #GstMultiQueue structure.
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*/
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struct _GstMultiQueue {
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GstElement element;
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/* number of queues */
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guint nbqueues;
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/* The list of individual queues */
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GList *queues;
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guint32 queues_cookie;
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GstDataQueueSize max_size, extra_size;
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gboolean use_buffering;
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gint low_percent, high_percent;
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gboolean buffering;
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guint32 counter; /* incoming object counter, protected with STREAM_LOCK */
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guint32 highid; /* contains highest id of last outputted object */
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GMutex * qlock; /* Global queue lock (vs object lock or individual */
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/* queues lock). Protects nbqueues, queues, global */
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/* GstMultiQueueSize, counter and highid */
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gint nextnotlinked; /* ID of the next queue not linked (-1 : none) */
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gint numwaiting; /* number of not-linked pads waiting */
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};
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struct _GstMultiQueueClass {
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GstElementClass parent_class;
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/* signals emitted when ALL queues are either full or empty */
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void (*underrun) (GstMultiQueue *queue);
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void (*overrun) (GstMultiQueue *queue);
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};
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GType gst_multi_queue_get_type (void);
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G_END_DECLS
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#endif /* __GST_MULTI_QUEUE_H__ */
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