mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-06-08 09:09:26 +00:00
fcb10a6c85
Original commit message from CVS: - Removed bufferpool code and move that to gstbuffer.c - implemented refcounting on GstData - implemented new buffer code based on Company's work in the EVENTS2 branch - added boxed types for GstData/GstEvent/GstBuffer/GstBufferPool - added refcounting to bufferpools and events - use lockfree allocation for buffers - simplified the clock, use lockfree allocation - use GQueue in GstQueue for faster access to the tail element - update core plugins to the new event API
105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wtay@chello.be>
|
|
*
|
|
* gstqueue.h:
|
|
*
|
|
* 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_QUEUE_H__
|
|
#define __GST_QUEUE_H__
|
|
|
|
|
|
#include <gst/gstelement.h>
|
|
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
extern GstElementDetails gst_queue_details;
|
|
|
|
|
|
#define GST_TYPE_QUEUE \
|
|
(gst_queue_get_type())
|
|
#define GST_QUEUE(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QUEUE,GstQueue))
|
|
#define GST_QUEUE_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QUEUE,GstQueueClass))
|
|
#define GST_IS_QUEUE(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QUEUE))
|
|
#define GST_IS_QUEUE_CLASS(obj) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QUEUE))
|
|
|
|
enum {
|
|
GST_QUEUE_NO_LEAK = 0,
|
|
GST_QUEUE_LEAK_UPSTREAM = 1,
|
|
GST_QUEUE_LEAK_DOWNSTREAM = 2
|
|
};
|
|
|
|
typedef struct _GstQueue GstQueue;
|
|
typedef struct _GstQueueClass GstQueueClass;
|
|
|
|
struct _GstQueue {
|
|
GstElement element;
|
|
|
|
GstPad *sinkpad;
|
|
GstPad *srcpad;
|
|
|
|
/* the queue of buffers we're keeping our grubby hands on */
|
|
GQueue *queue;
|
|
|
|
guint level_buffers; /* number of buffers queued here */
|
|
guint level_bytes; /* number of bytes queued here */
|
|
guint64 level_time; /* amount of time queued here */
|
|
|
|
guint size_buffers; /* size of queue in buffers */
|
|
guint size_bytes; /* size of queue in bytes */
|
|
guint64 size_time; /* size of queue in time */
|
|
|
|
gint leaky; /* whether the queue is leaky, and if so at which end */
|
|
gint block_timeout; /* microseconds until a blocked queue times out and returns GST_EVENT_FILLER.
|
|
* A value of -1 will block forever. */
|
|
gboolean may_deadlock; /* it the queue should fail on possible deadlocks */
|
|
gboolean interrupt;
|
|
gboolean flush;
|
|
|
|
GMutex *qlock; /* lock for queue (vs object lock) */
|
|
/* we are single reader and single writer queue */
|
|
gboolean reader; /* reader waiting on empty queue */
|
|
gboolean writer; /* writer waiting on full queue */
|
|
GCond *not_empty; /* signals buffers now available for reading */
|
|
GCond *not_full; /* signals space now available for writing */
|
|
|
|
GTimeVal *timeval; /* the timeout for the queue locking */
|
|
GAsyncQueue *events; /* upstream events get decoupled here */
|
|
};
|
|
|
|
struct _GstQueueClass {
|
|
GstElementClass parent_class;
|
|
|
|
/* signal callbacks */
|
|
void (*low_watermark) (GstQueue *queue, gint level);
|
|
void (*high_watermark) (GstQueue *queue, gint level);
|
|
};
|
|
|
|
GType gst_queue_get_type (void);
|
|
|
|
G_END_DECLS
|
|
|
|
|
|
#endif /* __GST_QUEUE_H__ */
|