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_EFFECTS_H__
22 #define __GST_GL_EFFECTS_H__
23 
24 #include <gst/gl/gstglfilter.h>
25 #include <gst/gl/gstglfuncs.h>
26 
27 #include "effects/gstgleffectssources.h"
28 
29 G_BEGIN_DECLS
30 
31 #define GST_TYPE_GL_EFFECTS            (gst_gl_effects_get_type())
32 #define GST_GL_EFFECTS(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_GL_EFFECTS,GstGLEffects))
33 #define GST_IS_GL_EFFECTS(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_GL_EFFECTS))
34 #define GST_GL_EFFECTS_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) , GST_TYPE_GL_EFFECTS,GstGLEffectsClass))
35 #define GST_IS_GL_EFFECTS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) , GST_TYPE_GL_EFFECTS))
36 #define GST_GL_EFFECTS_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) , GST_TYPE_GL_EFFECTS,GstGLEffectsClass))
37 
38 #define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))
39 #define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))
40 #define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0))
41 #define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0))
42 #define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))
43 
44 typedef struct _GstGLEffects GstGLEffects;
45 typedef struct _GstGLEffectsClass GstGLEffectsClass;
46 
47 typedef struct {
48   gint effect;
49   guint supported_properties;
50   const gchar *filter_name;
51   const gchar *filter_longname;
52 } GstGLEffectsFilterDescriptor;
53 
54 typedef void (* GstGLEffectProcessFunc) (GstGLEffects *effects);
55 
56 #define NEEDED_TEXTURES 5
57 
58 enum {
59   GST_GL_EFFECTS_CURVE_HEAT,
60   GST_GL_EFFECTS_CURVE_SEPIA,
61   GST_GL_EFFECTS_CURVE_XPRO,
62   GST_GL_EFFECTS_CURVE_LUMA_XPRO,
63   GST_GL_EFFECTS_CURVE_XRAY,
64   GST_GL_EFFECTS_N_CURVES
65 };
66 
67 struct _GstGLEffects
68 {
69   GstGLFilter filter;
70 
71   GstGLEffectProcessFunc effect;
72   gint current_effect;
73 
74   GstGLMemory *intexture;
75   GstGLMemory *midtexture[NEEDED_TEXTURES];
76   GstGLMemory *outtexture;
77 
78   GLuint curve[GST_GL_EFFECTS_N_CURVES];
79 
80   GHashTable *shaderstable;
81 
82   gboolean horizontal_swap; /* switch left to right */
83   gboolean invert; /* colours */
84 };
85 
86 struct _GstGLEffectsClass
87 {
88   GstGLFilterClass filter_class;
89   const GstGLEffectsFilterDescriptor *filter_descriptor;
90 };
91 
92 GType gst_gl_effects_get_type (void);
93 gboolean gst_gl_effects_register_filters (GstPlugin *, GstRank);
94 GstGLShader* gst_gl_effects_get_fragment_shader (GstGLEffects *effects,
95     const gchar * shader_name, const gchar * shader_source_gles2);
96 
97 void gst_gl_effects_identity (GstGLEffects *effects);
98 void gst_gl_effects_mirror (GstGLEffects *effects);
99 void gst_gl_effects_squeeze (GstGLEffects *effects);
100 void gst_gl_effects_stretch (GstGLEffects *effects);
101 void gst_gl_effects_tunnel (GstGLEffects *effects);
102 void gst_gl_effects_fisheye (GstGLEffects *effects);
103 void gst_gl_effects_twirl (GstGLEffects *effects);
104 void gst_gl_effects_bulge (GstGLEffects *effects);
105 void gst_gl_effects_square (GstGLEffects *effects);
106 void gst_gl_effects_heat (GstGLEffects *effects);
107 void gst_gl_effects_sepia (GstGLEffects *effects);
108 void gst_gl_effects_xpro (GstGLEffects *effects);
109 void gst_gl_effects_xray (GstGLEffects *effects);
110 void gst_gl_effects_luma_xpro (GstGLEffects *effects);
111 void gst_gl_effects_sin (GstGLEffects *effects);
112 void gst_gl_effects_glow (GstGLEffects *effects);
113 void gst_gl_effects_sobel (GstGLEffects *effects);
114 void gst_gl_effects_blur (GstGLEffects *effects);
115 void gst_gl_effects_laplacian (GstGLEffects *effects);
116 
117 G_END_DECLS
118 
119 #endif /*__GST_GL_EFFECTS_H__ */
120