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518e8a3fd2
Facilities are given to create fbo's and attach GL memory (renderbuffers or textures). It also keeps track of the renderable size for use with effective use with glViewport().
99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
/*
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* GStreamer
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* Copyright (C) 2013 Matthew Waters <ystreet00@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_GL_UTILS_H__
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#define __GST_GL_UTILS_H__
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#include <gst/video/video.h>
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#include <gst/video/gstvideoaffinetransformationmeta.h>
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#include <gst/gl/gstgl_fwd.h>
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G_BEGIN_DECLS
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/**
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* GstGLContextProjection:
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*
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* %GST_GL_DISPLAY_PROJECTION_ORTHO2D: Orthogonal projection
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* %GST_GL_DISPLAY_CONVERSION_MATRIX: Perspective projection
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*/
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typedef enum
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{
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GST_GL_DISPLAY_PROJECTION_ORTHO2D,
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GST_GL_DISPLAY_PROJECTION_PERSPECTIVE
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} GstGLDisplayProjection;
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/**
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* CDCB:
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* @texture: texture to draw
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* @width: new width
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* @height: new height:
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* @data: user data
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*
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* client draw callback
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*/
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typedef gboolean (*CDCB) (GLuint texture, GLuint width, GLuint height, gpointer data);
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/**
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* GLCB:
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* @width: the width
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* @height: the height
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* @texture: texture
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* @stuff: user data
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*
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* callback definition for operating on textures
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*/
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typedef void (*GLCB) (gint, gint, guint, gpointer stuff);
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gboolean gst_gl_context_gen_shader (GstGLContext * context,
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const gchar * shader_vertex_source,
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const gchar * shader_fragment_source, GstGLShader ** shader);
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void gst_gl_context_del_shader (GstGLContext * context, GstGLShader * shader);
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void gst_gl_context_set_error (GstGLContext * context, const char * format, ...);
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gchar *gst_gl_context_get_error (void);
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gboolean gst_gl_ensure_element_data (gpointer element,
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GstGLDisplay **display_ptr, GstGLContext ** other_context_ptr);
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gboolean gst_gl_handle_set_context (GstElement * element, GstContext * context,
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GstGLDisplay ** display, GstGLContext ** other_context);
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gboolean gst_gl_handle_context_query (GstElement * element, GstQuery * query,
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GstGLDisplay ** display, GstGLContext ** other_context);
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gboolean gst_gl_run_query (GstElement * element,
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GstQuery * query, GstPadDirection direction);
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gsize gst_gl_get_plane_data_size (GstVideoInfo * info, GstVideoAlignment * align,
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guint plane);
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gsize gst_gl_get_plane_start (GstVideoInfo * info, GstVideoAlignment * valign,
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guint plane);
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GstCaps * gst_gl_caps_replace_all_caps_features (const GstCaps * caps,
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const gchar * feature_name);
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gboolean gst_gl_value_set_texture_target_from_mask (GValue * value,
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GstGLTextureTarget target_mask);
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gboolean gst_gl_value_set_texture_target (GValue * value, GstGLTextureTarget target);
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GstGLTextureTarget gst_gl_value_get_texture_target_mask (const GValue * value);
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void gst_gl_multiply_matrix4 (const gfloat * a, const gfloat * b, gfloat * result);
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void gst_gl_get_affine_transformation_meta_as_ndc (GstVideoAffineTransformationMeta *
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meta, gfloat * matrix);
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G_END_DECLS
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#endif /* __GST_GL_UTILS_H__ */
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