Struct FeatureDescriptor

pub struct FeatureDescriptor<'a> { /* private fields */ }

Descriptor of a single host feature.

This struct is slightly different from the raw LV2_Feature struct, as the length of the contained URI is precomputed for faster comparison.

Implementations

impl<'a> FeatureDescriptor<'a>

pub fn uri(&self) -> &CStr

Return the URI of the feature.

pub fn data(&self) -> *const c_void

Returns the data pointer of the feature descriptor.

pub fn is_feature<T: Feature>(&self) -> bool

Evaluate whether this object describes the given feature.

pub fn into_feature<T: Feature>(self, class: ThreadingClass) -> Result<T, Self>

Try to return a feature struct instance from the internal data.

If this object describes the requested feature, it will be created from the raw data. This operation consumes the descriptor since it would be possible to have multiple features instances otherwise. You also have to provide the threading class of the feature.

If the feature construction fails, the descriptor will be returned again.