1 /* GStreamer
2  * Copyright (C) 2010 Olivier Aubert <olivier.aubert@liris.cnrs.fr>
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Library General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Library General Public License for more details.
13  *
14  * You should have received a copy of the GNU Library General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17  * Boston, MA 02110-1301, USA.
18  */
19 
20 #ifndef __GST_RSVG_OVERLAY_H__
21 #define __GST_RSVG_OVERLAY_H__
22 
23 #include <librsvg/rsvg.h>
24 #include <gst/gst.h>
25 #include <gst/video/video.h>
26 #include <gst/video/gstvideofilter.h>
27 #include <gst/base/gstadapter.h>
28 
29 G_BEGIN_DECLS
30 #define GST_TYPE_RSVG_OVERLAY 	     (gst_rsvg_overlay_get_type())
31 #define GST_RSVG_OVERLAY(obj) 	     (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RSVG_OVERLAY,GstRsvgOverlay))
32 #define GST_RSVG_OVERLAY_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RSVG_OVERLAY,GstRsvgOverlayClass))
33 #define GST_IS_RSVG_OVERLAY(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RSVG_OVERLAY))
34 #define GST_IS_RSVG_OVERLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RSVG_OVERLAY))
35 typedef struct _GstRsvgOverlay GstRsvgOverlay;
36 typedef struct _GstRsvgOverlayClass GstRsvgOverlayClass;
37 
38 /**
39  * GstRsvgOverlay:
40  *
41  * Opaque object data structure.
42  */
43 struct _GstRsvgOverlay
44 {
45   GstVideoFilter element;
46 
47   /* < private > */
48   GMutex rsvg_lock;
49 
50   RsvgHandle *handle;
51 
52   /* width and height of the SVG data */
53   int svg_width;
54   int svg_height;
55 
56   int x_offset;
57   int y_offset;
58   float x_relative;
59   float y_relative;
60 
61   int width;
62   int height;
63   float width_relative;
64   float height_relative;
65 
66   GstPad *data_sinkpad;
67   GstAdapter *adapter;
68 };
69 
70 struct _GstRsvgOverlayClass
71 {
72   GstVideoFilterClass parent_class;
73 };
74 
75 GType gst_rsvg_overlay_get_type (void);
76 
77 G_END_DECLS
78 #endif /* __GST_RSVG_OVERLAY_H__ */
79