1 /* GStreamer
2  * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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 
21 #ifndef __GST_SMPTE_ALPHA_H__
22 #define __GST_SMPTE_ALPHA_H__
23 
24 #include <gst/gst.h>
25 #include <gst/video/video.h>
26 #include <gst/video/gstvideofilter.h>
27 
28 
29 G_BEGIN_DECLS
30 
31 #include "gstmask.h"
32 
33 #define GST_TYPE_SMPTE_ALPHA \
34   (gst_smpte_alpha_get_type())
35 #define GST_SMPTE_ALPHA(obj) \
36   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SMPTE_ALPHA,GstSMPTEAlpha))
37 #define GST_SMPTE_ALPHA_CLASS(klass) \
38   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SMPTE_ALPHA,GstSMPTEAlphaClass))
39 #define GST_IS_SMPTE_ALPHA(obj) \
40   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SMPTE_ALPHA))
41 #define GST_IS_SMPTE_ALPHA_CLASS(klass) \
42   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SMPTE_ALPHA))
43 
44 typedef struct _GstSMPTEAlpha GstSMPTEAlpha;
45 typedef struct _GstSMPTEAlphaClass GstSMPTEAlphaClass;
46 
47 struct _GstSMPTEAlpha {
48   GstVideoFilter element;
49 
50   /* properties */
51   gint           type;
52   gint           border;
53   gint           depth;
54   gdouble        position;
55   gboolean       invert;
56 
57   /* negotiated format */
58   GstVideoFormat in_format, out_format;
59   gint           width;
60   gint           height;
61 
62   /* state of the effect */
63   GstMask       *mask;
64 
65   /* processing function */
66   void (*process) (GstSMPTEAlpha * smpte, const GstVideoFrame * in, GstVideoFrame * out,
67     GstMask * mask, gint border, gint pos);
68 };
69 
70 struct _GstSMPTEAlphaClass {
71   GstVideoFilterClass parent_class;
72 };
73 
74 GType gst_smpte_alpha_get_type (void);
75 gboolean gst_smpte_alpha_plugin_init (GstPlugin * plugin);
76 
77 G_END_DECLS
78 
79 #endif /* __GST_SMPTE_ALPHA_H__ */
80