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authorArmin Weatherwax2010-06-14 12:04:49 +0200
committerArmin Weatherwax2010-09-23 15:38:25 +0200
commit35df5441d3e2789663532c948731aff3a1e04728 (patch)
treeac7674289784a5f96106ea507637055a8dada78a /linden/indra/llmedia/llmediaimplgstreamervidplug.h
parentChanged version to Experimental 2010.09.18 (diff)
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llmediaplugins first step
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1/**
2 * @file llmediaimplgstreamervidplug.h
3 * @brief Video-consuming static GStreamer plugin for gst-to-LLMediaImpl
4 *
5 * $LicenseInfo:firstyear=2007&license=viewergpl$
6 *
7 * Copyright (c) 2007-2009, Linden Research, Inc.
8 *
9 * Second Life Viewer Source Code
10 * The source code in this file ("Source Code") is provided by Linden Lab
11 * to you under the terms of the GNU General Public License, version 2.0
12 * ("GPL"), unless you have obtained a separate licensing agreement
13 * ("Other License"), formally executed by you and Linden Lab. Terms of
14 * the GPL can be found in doc/GPL-license.txt in this distribution, or
15 * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
16 *
17 * There are special exceptions to the terms and conditions of the GPL as
18 * it is applied to this Source Code. View the full text of the exception
19 * in the file doc/FLOSS-exception.txt in this software distribution, or
20 * online at
21 * http://secondlifegrid.net/programs/open_source/licensing/flossexception
22 *
23 * By copying, modifying or distributing this software, you acknowledge
24 * that you have read and understood your obligations described above,
25 * and agree to abide by those obligations.
26 *
27 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
28 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
29 * COMPLETENESS OR PERFORMANCE.
30 * $/LicenseInfo$
31 */
32
33#ifndef __GST_SLVIDEO_H__
34#define __GST_SLVIDEO_H__
35
36///#if LL_GSTREAMER_ENABLED
37
38extern "C" {
39#include <gst/gst.h>
40#include <gst/video/video.h>
41#include <gst/video/gstvideosink.h>
42#include <glib/gthread.h>
43}
44
45G_BEGIN_DECLS
46
47/* #defines don't like whitespacey bits */
48#define GST_TYPE_SLVIDEO \
49 (gst_slvideo_get_type())
50#define GST_SLVIDEO(obj) \
51 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SLVIDEO,GstSLVideo))
52#define GST_SLVIDEO_CLASS(klass) \
53 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SLVIDEO,GstSLVideoClass))
54#define GST_IS_SLVIDEO(obj) \
55 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SLVIDEO))
56#define GST_IS_SLVIDEO_CLASS(klass) \
57 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SLVIDEO))
58
59typedef struct _GstSLVideo GstSLVideo;
60typedef struct _GstSLVideoClass GstSLVideoClass;
61
62typedef enum {
63 SLV_PF_UNKNOWN = 0,
64 SLV_PF_RGBX = 1,
65 SLV_PF_BGRX = 2,
66 SLV__END = 3
67} SLVPixelFormat;
68const int SLVPixelFormatBytes[SLV__END] = {1, 4, 4};
69
70struct _GstSLVideo
71{
72 GstVideoSink video_sink;
73
74 GstCaps *caps;
75
76 int fps_n, fps_d;
77 int par_n, par_d;
78 int height, width;
79 SLVPixelFormat format;
80
81 // SHARED WITH APPLICATION:
82 // Access to the following should be protected by GST_OBJECT_LOCK() on
83 // the GstSLVideo object, and should be totally consistent upon UNLOCK
84 // (i.e. all written at once to reflect the current retained frame info
85 // when the retained frame is updated.)
86 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.)
87 unsigned char* retained_frame_data;
88 int retained_frame_allocbytes;
89 int retained_frame_width, retained_frame_height;
90 SLVPixelFormat retained_frame_format;
91};
92
93struct _GstSLVideoClass
94{
95 GstVideoSinkClass parent_class;
96};
97
98GType gst_slvideo_get_type (void);
99
100void gst_slvideo_init_class (void);
101
102G_END_DECLS
103
104///#endif // LL_GSTREAMER_ENABLED
105
106#endif /* __GST_SLVIDEO_H__ */