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