Struct lv2_state::StateDescriptor

pub struct StateDescriptor<P: State> { /* fields omitted */ }

Raw wrapper of the State extension.

This is a marker type that has the required external methods for the extension.

Implementations

impl<P: State> StateDescriptor<P>

pub unsafe extern "C" fn extern_save(
    instance: LV2_Handle,
    store: LV2_State_Store_Function,
    handle: LV2_State_Handle,
    flags: u32,
    features: *const *const LV2_Feature
) -> LV2_State_Status

Handle a save request by the host.

This involves creating the plugin reference, constructing the store handle and discovering the required host features.

Safety

This method is unsafe since it is an interface for hosts written in C and since it dereferences raw pointers.

pub unsafe extern "C" fn extern_restore(
    instance: LV2_Handle,
    retrieve: LV2_State_Retrieve_Function,
    handle: LV2_State_Handle,
    flags: u32,
    features: *const *const LV2_Feature
) -> LV2_State_Status

Handle a restore request by the host.

This involves creating the plugin reference, constructing the retrieve handle and discovering the required host features.

Safety

This method is unsafe since it is an interface for hosts written in C and since it dereferences raw pointers.

Trait Implementations

impl<P: State> ExtensionDescriptor for StateDescriptor<P>

type ExtensionInterface = LV2_State_Interface

const INTERFACE: &'static LV2_State_Interface

impl<P: State> UriBound for StateDescriptor<P>

const URI: &'static [u8]

The URI of the type, safed as a byte slice

fn uri() -> &'static CStr

Construct a CStr reference to the URI.