/** * gst_context_is_persistent: * @context: The #GstContext. * * Check if @context is persistent. * * Returns: %TRUE if the context is persistent. * * Since: 1.2 */ gboolean gst_context_is_persistent (const GstContext * context) { g_return_val_if_fail (GST_IS_CONTEXT (context), FALSE); return context->persistent; }
/** * gst_context_get_structure: * @context: The #GstContext. * * Access the structure of the context. * * Returns: (transfer none): The structure of the context. The structure is * still owned by the context, which means that you should not modify it, * free it and that the pointer becomes invalid when you free the context. * * Since: 1.2 */ const GstStructure * gst_context_get_structure (const GstContext * context) { g_return_val_if_fail (GST_IS_CONTEXT (context), NULL); return GST_CONTEXT_STRUCTURE (context); }
/** * gst_context_get_context_type: * @context: The #GstContext. * * Get the type of @context. * * Returns: The type of the context. * * Since: 1.2 */ const gchar * gst_context_get_context_type (const GstContext * context) { g_return_val_if_fail (GST_IS_CONTEXT (context), NULL); return context->context_type; }
/** * gst_context_writable_structure: * @context: The #GstContext. * * Get a writable version of the structure. * * Returns: The structure of the context. The structure is still * owned by the context, which means that you should not free it and * that the pointer becomes invalid when you free the context. * This function checks if @context is writable. * * Since: 1.2 */ GstStructure * gst_context_writable_structure (GstContext * context) { g_return_val_if_fail (GST_IS_CONTEXT (context), NULL); g_return_val_if_fail (gst_context_is_writable (context), NULL); return GST_CONTEXT_STRUCTURE (context); }
/** * gst_context_has_context_type: * @context: The #GstContext. * @context_type: Context type to check. * * Checks if @context has @context_type. * * Returns: %TRUE if @context has @context_type. * * Since: 1.2 */ gboolean gst_context_has_context_type (const GstContext * context, const gchar * context_type) { g_return_val_if_fail (GST_IS_CONTEXT (context), FALSE); g_return_val_if_fail (context_type != NULL, FALSE); return strcmp (context->context_type, context_type) == 0; }
gboolean gst_vaapi_video_context_get_display (GstContext * context, GstVaapiDisplay ** display_ptr) { const GstStructure *structure; g_return_val_if_fail (GST_IS_CONTEXT (context), FALSE); g_return_val_if_fail (g_strcmp0 (gst_context_get_context_type (context), GST_VAAPI_DISPLAY_CONTEXT_TYPE_NAME) == 0, FALSE); structure = gst_context_get_structure (context); return gst_structure_get (structure, GST_VAAPI_DISPLAY_CONTEXT_TYPE_NAME, GST_TYPE_VAAPI_DISPLAY, display_ptr, NULL); }