OpenGL Miscellaneous Utilities

OpenGL Miscellaneous Utilities — some miscellaneous utilities for OpenGL

Functions

Description

Functions

gst_gl_handle_set_context ()

gboolean
gst_gl_handle_set_context (GstElement *element,
                           GstContext *context,
                           GstGLDisplay **display,
                           GstGLContext **other_context);

gst_gl_handle_context_query ()

gboolean
gst_gl_handle_context_query (GstElement *element,
                             GstQuery *query,
                             GstGLDisplay **display,
                             GstGLContext **other_context);

gst_gl_context_check_framebuffer_status ()

gboolean
gst_gl_context_check_framebuffer_status
                               (GstGLContext *context);

Parameters

context

a GstGLContext

 

Returns

whether whether the current framebuffer is complete

Since: 1.10


gst_gl_caps_replace_all_caps_features ()

GstCaps *
gst_gl_caps_replace_all_caps_features (const GstCaps *caps,
                                       const gchar *feature_name);

gst_gl_ensure_element_data ()

gboolean
gst_gl_ensure_element_data (gpointer element,
                            GstGLDisplay **display_ptr,
                            GstGLContext **other_context_ptr);

gst_gl_get_plane_data_size ()

gsize
gst_gl_get_plane_data_size (GstVideoInfo *info,
                            GstVideoAlignment *align,
                            guint plane);

gst_gl_get_plane_start ()

gsize
gst_gl_get_plane_start (GstVideoInfo *info,
                        GstVideoAlignment *valign,
                        guint plane);

gst_gl_run_query ()

gboolean
gst_gl_run_query (GstElement *element,
                  GstQuery *query,
                  GstPadDirection direction);

gst_gl_value_get_texture_target_mask ()

GstGLTextureTarget
gst_gl_value_get_texture_target_mask (const GValue *value);

See gst_gl_value_set_texture_target_from_mask() for what entails a mask

Parameters

value

an initialized GValue of type G_TYPE_STRING

 

Returns

the mask of GstGLTextureTarget's in value


gst_gl_value_set_texture_target ()

gboolean
gst_gl_value_set_texture_target (GValue *value,
                                 GstGLTextureTarget target);

Parameters

value

an initialized GValue of type G_TYPE_STRING

 

target

a GstGLTextureTarget's

 

Returns

whether the target could be set on value


gst_gl_value_set_texture_target_from_mask ()

gboolean
gst_gl_value_set_texture_target_from_mask
                               (GValue *value,
                                GstGLTextureTarget target_mask);

A mask is a bitwise OR of (1 << target) where target is a valid GstGLTextureTarget

Parameters

value

an uninitialized GValue

 

target_mask

a bitwise mask of GstGLTextureTarget's

 

Returns

whether the target_mask could be set on value


gst_gl_get_affine_transformation_meta_as_ndc ()

void
gst_gl_get_affine_transformation_meta_as_ndc
                               (GstVideoAffineTransformationMeta *meta,
                                gfloat *matrix);

gst_gl_multiply_matrix4 ()

void
gst_gl_multiply_matrix4 (const gfloat *a,
                         const gfloat *b,
                         gfloat *result);

gst_gl_context_gen_shader ()

gboolean
gst_gl_context_gen_shader (GstGLContext *context,
                           const gchar *shader_vertex_source,
                           const gchar *shader_fragment_source,
                           GstGLShader **shader);

gst_gl_context_del_shader ()

void
gst_gl_context_del_shader (GstGLContext *context,
                           GstGLShader *shader);

Types and Values

See Also

GstGLContext