1 /* GStreamer
2  * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3  *                    2005 Wim Taymans <wim@fluendo.com>
4  *
5  * gstossdmabuffer.h:
6  *
7  * This library is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Library General Public
9  * License as published by the Free Software Foundation; either
10  * version 2 of the License, or (at your option) any later version.
11  *
12  * This library is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Library General Public License for more details.
16  *
17  * You should have received a copy of the GNU Library General Public
18  * License along with this library; if not, write to the
19  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
20  * Boston, MA 02110-1301, USA.
21  */
22 
23 #ifndef __GST_OSSDMABUFFER_H__
24 #define __GST_OSSDMABUFFER_H__
25 
26 #include <gst/gst.h>
27 
28 #include "gstosshelper.h"
29 #include <gst/audio/gstringbuffer.h>
30 
31 G_BEGIN_DECLS
32 
33 #define GST_TYPE_OSSDMABUFFER            (gst_ossdmabuffer_get_type())
34 #define GST_OSSDMABUFFER(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OSSDMABUFFER,GstOssDMABuffer))
35 #define GST_OSSDMABUFFER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OSSDMABUFFER,GstOssDMABufferClass))
36 #define GST_IS_OSSDMABUFFER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OSSDMABUFFER))
37 #define GST_IS_OSSDMABUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OSSDMABUFFER))
38 
39 #define GST_OSSELEMENT_GET(obj)  GST_OSSELEMENT (obj->element)
40 
41 typedef enum {
42   GST_OSSDMABUFFER_OPEN         = (1 << 0),
43 } GstOssDMABufferFlags;
44 
45 typedef struct _GstOssDMABuffer GstOssDMABuffer;
46 typedef struct _GstOssDMABufferClass GstOssDMABufferClass;
47 
48 #define GST_OSSDMABUFFER_THREAD(buf)   (GST_OSSDMABUFFER(buf)->thread)
49 #define GST_OSSDMABUFFER_LOCK          GST_OBJECT_LOCK
50 #define GST_OSSDMABUFFER_UNLOCK        GST_OBJECT_UNLOCK
51 #define GST_OSSDMABUFFER_COND(buf)     (GST_OSSDMABUFFER(buf)->cond)
52 #define GST_OSSDMABUFFER_SIGNAL(buf)   (g_cond_signal (GST_OSSDMABUFFER_COND (buf)))
53 #define GST_OSSDMABUFFER_WAIT(buf)     (g_cond_wait (GST_OSSDMABUFFER_COND (buf), GST_OBJECT_GET_LOCK (buf)))
54 
55 struct _GstOssDMABuffer {
56   GstRingBuffer  buffer;
57 
58   GstOssElement *element;
59 
60   int            fd;
61   int            caps;
62   int            frag;
63 
64   GThread       *thread;
65   GCond         *cond;
66   gboolean       running;
67 };
68 
69 struct _GstOssDMABufferClass {
70   GstRingBufferClass parent_class;
71 };
72 
73 GType gst_ossdmabuffer_get_type(void);
74 
75 G_END_DECLS
76 
77 #endif /* __GST_OSSDMABUFFER_H__ */
78