1 /*
2  * GStreamer
3  * Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com>
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Library General Public
7  * License as published by the Free Software Foundation; either
8  * version 2 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * Library General Public License for more details.
14  *
15  * You should have received a copy of the GNU Library General Public
16  * License along with this library; if not, write to the
17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18  * Boston, MA 02110-1301, USA.
19  */
20 
21 #ifndef _GST_GL_DIFFERENCEMATTE_H_
22 #define _GST_GL_DIFFERENCEMATTE_H_
23 
24 #include <gst/gl/gstglfilter.h>
25 
26 #define GST_TYPE_GL_DIFFERENCEMATTE            (gst_gl_differencematte_get_type())
27 #define GST_GL_DIFFERENCEMATTE(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_GL_DIFFERENCEMATTE,GstGLDifferenceMatte))
28 #define GST_IS_GL_DIFFERENCEMATTE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_GL_DIFFERENCEMATTE))
29 #define GST_GL_DIFFERENCEMATTE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) , GST_TYPE_GL_DIFFERENCEMATTE,GstGLDifferenceMatteClass))
30 #define GST_IS_GL_DIFFERENCEMATTE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) , GST_TYPE_GL_DIFFERENCEMATTE))
31 #define GST_GL_DIFFERENCEMATTE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) , GST_TYPE_GL_DIFFERENCEMATTE,GstGLDifferenceMatteClass))
32 
33 typedef struct _GstGLDifferenceMatte GstGLDifferenceMatte;
34 typedef struct _GstGLDifferenceMatteClass GstGLDifferenceMatteClass;
35 
36 struct _GstGLDifferenceMatte
37 {
38   GstGLFilter filter;
39 
40   GstGLShader *identity_shader;
41   GstGLShader *shader[4];
42 
43   gchar *location;
44   gboolean bg_has_changed;
45 
46   guchar *pixbuf;
47   gint pbuf_width, pbuf_height;
48   GstGLMemory *savedbgtexture;
49   GstGLMemory *newbgtexture;
50   GstGLMemory *midtexture[4];
51   GstGLMemory *intexture;
52   float kernel[7];
53 };
54 
55 struct _GstGLDifferenceMatteClass
56 {
57   GstGLFilterClass filter_class;
58 };
59 
60 GType gst_gl_differencematte_get_type (void);
61 
62 #endif /* _GST_GL_DIFFERENCEMATTE_H_ */
63