1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/* 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>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
GstElementDetails gst_queue_details;
#define GST_TYPE_QUEUE \
(gst_queue_get_type())
#define GST_QUEUE(obj) \
(GTK_CHECK_CAST((obj),GST_TYPE_QUEUE,GstQueue))
#define GST_QUEUE_CLASS(klass) \
(GTK_CHECK_CLASS_CAST((klass),GST_TYPE_QUEUE,GstQueueClass))
#define GST_IS_QUEUE(obj) \
(GTK_CHECK_TYPE((obj),GST_TYPE_QUEUE))
#define GST_IS_QUEUE_CLASS(obj) \
(GTK_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 */
GSList *queue;
gint level_buffers; /* number of buffers queued here */
gint level_bytes; /* number of bytes queued here */
guint64 level_time; /* amount of time queued here */
gint size_buffers; /* size of queue in buffers */
gint 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 */
// GMutex *lock; (optimization?)
GCond *emptycond;
GCond *fullcond;
GTimeVal *timeval; /* the timeout for the queue locking */
};
struct _GstQueueClass {
GstElementClass parent_class;
/* signal callbacks */
void (*low_watermark) (GstQueue *queue, gint level);
void (*high_watermark) (GstQueue *queue, gint level);
};
GtkType gst_queue_get_type (void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_QUEUE_H__ */
|
