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
|
/**
* @file llmediaimplgstreamervidplug.h
* @brief Video-consuming static GStreamer plugin for gst-to-LLMediaImpl
*
* @cond
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
* @endcond
*/
#ifndef __GST_SLVIDEO_H__
#define __GST_SLVIDEO_H__
#if LL_GSTREAMER010_ENABLED
extern "C" {
#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/video/gstvideosink.h>
}
G_BEGIN_DECLS
/* #defines don't like whitespacey bits */
#define GST_TYPE_SLVIDEO \
(gst_slvideo_get_type())
#define GST_SLVIDEO(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SLVIDEO,GstSLVideo))
#define GST_SLVIDEO_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SLVIDEO,GstSLVideoClass))
#define GST_IS_SLVIDEO(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SLVIDEO))
#define GST_IS_SLVIDEO_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SLVIDEO))
typedef struct _GstSLVideo GstSLVideo;
typedef struct _GstSLVideoClass GstSLVideoClass;
typedef enum {
SLV_PF_UNKNOWN = 0,
SLV_PF_RGBX = 1,
SLV_PF_BGRX = 2,
SLV__END = 3
} SLVPixelFormat;
const int SLVPixelFormatBytes[SLV__END] = {1, 4, 4};
struct _GstSLVideo
{
GstVideoSink video_sink;
GstCaps *caps;
int fps_n, fps_d;
int par_n, par_d;
int height, width;
SLVPixelFormat format;
// SHARED WITH APPLICATION:
// Access to the following should be protected by GST_OBJECT_LOCK() on
// the GstSLVideo object, and should be totally consistent upon UNLOCK
// (i.e. all written at once to reflect the current retained frame info
// when the retained frame is updated.)
bool retained_frame_ready; // new frame ready since flag last reset. (*TODO: could get the writer to wait on a semaphore instead of having the reader poll, potentially making dropped frames somewhat cheaper.)
unsigned char* retained_frame_data;
int retained_frame_allocbytes;
int retained_frame_width, retained_frame_height;
SLVPixelFormat retained_frame_format;
// sticky resize info
bool resize_forced_always;
int resize_try_width;
int resize_try_height;
};
struct _GstSLVideoClass
{
GstVideoSinkClass parent_class;
};
GType gst_slvideo_get_type (void);
void gst_slvideo_init_class (void);
G_END_DECLS
#endif // LL_GSTREAMER010_ENABLED
#endif /* __GST_SLVIDEO_H__ */
|
