gst_gl_handle_set_context ()

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

Helper function for implementing GstElement::set_context() in OpenGL capable elements.

Retrieve's the GstGLDisplay or GstGLContext in context and places the result in display or other_context respectively.

gst_gl_handle_context_query ()

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

gst_gl_ensure_element_data ()

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

Perform the steps necessary for retrieving a GstGLDisplay and (optionally) an application provided GstGLContext from the surrounding elements or from the application using the GstContext mechanism.

If the contents of display_ptr or other_context_ptr are not NULL, then no GstContext query is necessary for GstGLDisplay or GstGLContext retrieval or is performed.

This performs GstContext queries (if necessary) for a winsys display connection with GST_GL_DISPLAY_CONTEXT_TYPE, "gst.x11.display.handle", and "GstWaylandDisplayHandleContextType" stopping after the first successful retrieval.

This also performs a GstContext query (if necessary) for an optional application provided GstGLContext using the name "gst.gl.app_context". The returned GstGLContext will be shared with a GStreamer created OpenGL context.

gst_gl_query_local_gl_context ()

gboolean
gst_gl_query_local_gl_context (GstElement *element,
                               GstPadDirection direction,
                               GstGLContext **context_ptr);

Performs a GST_QUERY_CONTEXT query of type "gst.gl.local_context" on all GstPads in element of direction for the local OpenGL context used by GStreamer elements.

gst_gl_get_plane_data_size ()

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

Retrieve the size in bytes of a video plane of data with a certain alignment

gst_gl_get_plane_start ()

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

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

gst_gl_value_set_texture_target ()

gboolean
gst_gl_value_set_texture_target (GValue *value,
                                 GstGLTextureTarget target);

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

gst_gl_check_extension ()

gboolean
gst_gl_check_extension (const char *name,
                        const gchar *ext);