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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/* G-Streamer generic V4L2 element
* Copyright (C) 2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* 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_V4L2ELEMENT_H__
#define __GST_V4L2ELEMENT_H__
#include <gst/gst.h>
#include <gst/xwindowlistener/xwindowlistener.h>
/* Because of some really cool feature in video4linux1, also known as
* 'not including sys/types.h and sys/time.h', we had to include it
* ourselves. In all their intelligence, these people decided to fix
* this in the next version (video4linux2) in such a cool way that it
* breaks all compilations of old stuff...
* The real problem is actually that linux/time.h doesn't use proper
* macro checks before defining types like struct timeval. The proper
* fix here is to either fuck the kernel header (which is what we do
* by defining _LINUX_TIME_H, an innocent little hack) or by fixing it
* upstream, which I'll consider doing later on. If you get compiler
* errors here, check your linux/time.h && sys/time.h header setup.
*/
#include <sys/types.h>
#include <linux/types.h>
#define _LINUX_TIME_H
#define __user
#include <linux/videodev2.h>
/*
* See bug #135919, the Suse9 (and Mandrake10) videodev2 headers
* contain a bug where (for userspace applications) the v4l2_buffer
* struct is not declared, so applications have to declare it.
* Declaration straightly ripped out from <linux/videodev2.h>.
*/
#ifdef GST_V4L2_MISSING_BUFDECL
struct v4l2_buffer
{
__u32 index;
enum v4l2_buf_type type;
__u32 bytesused;
__u32 flags;
enum v4l2_field field;
struct timeval timestamp;
struct v4l2_timecode timecode;
__u32 sequence;
/* memory location */
enum v4l2_memory memory;
union {
__u32 offset;
unsigned long userptr;
} m;
__u32 length;
__u32 reserved[2];
};
#endif /* GST_V4L2_MISSING_BUFDECL */
#define GST_TYPE_V4L2ELEMENT \
(gst_v4l2element_get_type())
#define GST_V4L2ELEMENT(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_V4L2ELEMENT, GstV4l2Element))
#define GST_V4L2ELEMENT_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_V4L2ELEMENT, GstV4l2ElementClass))
#define GST_IS_V4L2ELEMENT(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_V4L2ELEMENT))
#define GST_IS_V4L2ELEMENT_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_V4L2ELEMENT))
#define GST_V4L2ELEMENT_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_V4L2ELEMENT, GstV4l2ElementClass))
typedef struct _GstV4l2Element GstV4l2Element;
typedef struct _GstV4l2ElementClass GstV4l2ElementClass;
typedef struct _GstV4l2Xv GstV4l2Xv;
struct _GstV4l2Element {
GstElement element;
/* the video device */
char *device;
/* the video-device's file descriptor */
gint video_fd;
/* the video buffer (mmap()'ed) */
guint8 **buffer;
/* the video-device's capabilities */
struct v4l2_capability vcap;
/* the toys available to us */
GList *channels;
GList *norms;
GList *colors;
/* X-overlay */
GstV4l2Xv *xv;
XID xwindow_id;
/* properties */
gchar *norm;
gchar *channel;
gulong frequency;
};
struct _GstV4l2ElementClass {
GstElementClass parent_class;
/* probed devices */
GList *devices;
/* signals */
void (*open) (GstElement *element,
const gchar *device);
void (*close) (GstElement *element,
const gchar *device);
};
GType gst_v4l2element_get_type (void);
#endif /* __GST_V4L2ELEMENT_H__ */
|
