Struct lv2_sys::LV2_State_Make_Path

#[repr(C)]
pub struct LV2_State_Make_Path {
    pub handle: LV2_State_Make_Path_Handle,
    pub path: Option<unsafe extern "C" fn(handle: LV2_State_Make_Path_Handle, path: *const c_char) -> *mut c_char>,
}

Feature data for state:makePath (@ref LV2_STATE__makePath).

Fields

handle: LV2_State_Make_Path_Handle

Opaque host data.

path: Option<unsafe extern "C" fn(handle: LV2_State_Make_Path_Handle, path: *const c_char) -> *mut c_char>

Return a path the plugin may use to create a new file. @param handle MUST be the handle member of this struct. @param path The path of the new file within a namespace unique to this plugin instance. @return The absolute path to use for the new file.

This function can be used by plugins to create files and directories, either at state saving time (if this feature is passed to LV2_State_Interface.save()) or any time (if this feature is passed to LV2_Descriptor.instantiate()).

The host MUST do whatever is necessary for the plugin to be able to create a file at the returned path (e.g. using fopen), including creating any leading directories.

If this function is passed to LV2_Descriptor.instantiate(), it may be called from any non-realtime context. If it is passed to LV2_State_Interface.save(), it may only be called within the dynamic scope of that function call.

The caller is responsible for freeing the returned value with free().

Trait Implementations

impl Clone for LV2_State_Make_Path

fn clone(&self) -> LV2_State_Make_Path

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for LV2_State_Make_Path

impl Debug for LV2_State_Make_Path

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.