1 /*
2  * GStreamer
3  * Copyright (C) 2016 Matthew Waters <matthew@centricular.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 __EXT_GL_GST_GL_UTILS_H__
22 #define __EXT_GL_GST_GL_UTILS_H__
23 
24 #include <gst/gl/gl.h>
25 
26 G_BEGIN_DECLS
27 
28 gboolean gst_gl_context_gen_shader (GstGLContext * context,
29     const gchar * shader_vertex_source,
30     const gchar * shader_fragment_source, GstGLShader ** shader);
31 void gst_gl_multiply_matrix4 (const gfloat * a, const gfloat * b, gfloat * result);
32 void gst_gl_get_affine_transformation_meta_as_ndc_ext (GstVideoAffineTransformationMeta *
33     meta, gfloat * matrix);
34 void gst_gl_set_affine_transformation_meta_from_ndc_ext (GstVideoAffineTransformationMeta * meta, const gfloat * matrix);
35 
36 G_END_DECLS
37 
38 #endif /* __EXT_GL_GST_GL_UTILS_H__ */
39