1 /* 2 * GStreamer 3 * Copyright (C) 2013 Matthew Waters <ystreet00@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_UTILS_H__ 22 #define __GST_GL_UTILS_H__ 23 24 #include <gst/video/video.h> 25 #include <gst/video/gstvideoaffinetransformationmeta.h> 26 27 #include <gst/gl/gstgl_fwd.h> 28 29 G_BEGIN_DECLS 30 31 GST_GL_API 32 gboolean gst_gl_ensure_element_data (gpointer element, 33 GstGLDisplay **display_ptr, GstGLContext ** other_context_ptr); 34 GST_GL_API 35 gboolean gst_gl_handle_set_context (GstElement * element, GstContext * context, 36 GstGLDisplay ** display, GstGLContext ** other_context); 37 GST_GL_API 38 gboolean gst_gl_handle_context_query (GstElement * element, GstQuery * query, 39 GstGLDisplay * display, GstGLContext * context, GstGLContext * other_context); 40 GST_GL_API 41 gboolean gst_gl_query_local_gl_context (GstElement * element, GstPadDirection direction, 42 GstGLContext ** context_ptr); 43 44 GST_GL_API 45 void gst_gl_element_propagate_display_context (GstElement * element, GstGLDisplay * display); 46 47 GST_GL_API 48 gsize gst_gl_get_plane_data_size (const GstVideoInfo * info, const GstVideoAlignment * align, 49 guint plane); 50 GST_GL_API 51 gsize gst_gl_get_plane_start (const GstVideoInfo * info, const GstVideoAlignment * valign, 52 guint plane); 53 54 GST_GL_API 55 gboolean gst_gl_value_set_texture_target_from_mask (GValue * value, 56 GstGLTextureTarget target_mask); 57 GST_GL_API 58 gboolean gst_gl_value_set_texture_target (GValue * value, GstGLTextureTarget target); 59 GST_GL_API 60 GstGLTextureTarget gst_gl_value_get_texture_target_mask (const GValue * value); 61 62 GST_GL_API 63 void gst_gl_get_affine_transformation_meta_as_ndc (GstVideoAffineTransformationMeta * meta, gfloat * matrix); 64 GST_GL_API 65 void gst_gl_set_affine_transformation_meta_from_ndc (GstVideoAffineTransformationMeta * meta, const gfloat * matrix); 66 67 GST_GL_API 68 void gst_gl_multiply_matrix4 (const gfloat * a, const gfloat * b, gfloat * result); 69 70 71 G_END_DECLS 72 73 #endif /* __GST_GL_UTILS_H__ */ 74