[−]Struct gstreamer::Preset
This interface offers methods to query and manipulate parameter preset sets. A preset is a bunch of property settings, together with meta data and a name. The name of a preset serves as key for subsequent method calls to manipulate single presets. All instances of one type will share the list of presets. The list is created on demand, if presets are not used, the list is not created.
The interface comes with a default implementation that serves most plugins.
Wrapper plugins will override most methods to implement support for the
native preset format of those wrapped plugins.
One method that is useful to be overridden is Preset::get_property_names.
With that one can control which properties are saved and in which order.
When implementing support for read-only presets, one should set the vmethods
for Preset::save_preset and Preset::delete_preset to None.
Applications can use Preset::is_editable to check for that.
The default implementation supports presets located in a system directory, application specific directory and in the users home directory. When getting a list of presets individual presets are read and overlaid in 1) system, 2) application and 3) user order. Whenever an earlier entry is newer, the later entries will be updated. Since 1.8 you can also provide extra paths where to find presets through the GST_PRESET_PATH environment variable. Presets found in those paths will be considered as "app presets".
Implements
Methods
impl Preset[src]
pub fn get_app_dir() -> Option<PathBuf>[src]
Gets the directory for application specific presets if set by the application.
Returns
the directory or None, don't free or modify
the string
pub fn set_app_dir<P: AsRef<Path>>(app_dir: P) -> Result<(), BoolError>[src]
Trait Implementations
impl Clone for Preset
fn clone(&self) -> Preset
fn clone_from(&mut self, source: &Self)1.0.0[src]
impl Debug for Preset
impl Eq for Preset
impl Hash for Preset
fn hash<__H: Hasher>(&self, state: &mut __H)
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher, 1.3.0[src]
H: Hasher,
impl<T: ObjectSubclass + PresetImpl> IsImplementable<T> for Preset[src]
unsafe extern "C" fn interface_init(_iface: gpointer, _iface_data: gpointer)[src]
impl Ord for Preset
fn cmp(&self, other: &Preset) -> Ordering
#[must_use]
fn max(self, other: Self) -> Self1.21.0[src]
#[must_use]
fn min(self, other: Self) -> Self1.21.0[src]
#[must_use]
fn clamp(self, min: Self, max: Self) -> Self[src]
impl<T: ObjectType> PartialEq<T> for Preset
impl<T: ObjectType> PartialOrd<T> for Preset
fn partial_cmp(&self, other: &T) -> Option<Ordering>
#[must_use]
fn lt(&self, other: &Rhs) -> bool1.0.0[src]
#[must_use]
fn le(&self, other: &Rhs) -> bool1.0.0[src]
#[must_use]
fn gt(&self, other: &Rhs) -> bool1.0.0[src]
#[must_use]
fn ge(&self, other: &Rhs) -> bool1.0.0[src]
impl Send for Preset[src]
impl StaticType for Preset
fn static_type() -> Type
impl Sync for Preset[src]
Auto Trait Implementations
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T[src]
impl<Super, Sub> CanDowncast<Sub> for Super where
Sub: IsA<Super>,
Super: IsA<Super>, [src]
Sub: IsA<Super>,
Super: IsA<Super>,
impl<T> Cast for T where
T: ObjectType, [src]
T: ObjectType,
fn upcast<T>(self) -> T where
Self: IsA<T>,
T: ObjectType, [src]
Self: IsA<T>,
T: ObjectType,
fn upcast_ref<T>(&self) -> &T where
Self: IsA<T>,
T: ObjectType, [src]
Self: IsA<T>,
T: ObjectType,
fn downcast<T>(self) -> Result<T, Self> where
Self: CanDowncast<T>,
T: ObjectType, [src]
Self: CanDowncast<T>,
T: ObjectType,
fn downcast_ref<T>(&self) -> Option<&T> where
Self: CanDowncast<T>,
T: ObjectType, [src]
Self: CanDowncast<T>,
T: ObjectType,
fn dynamic_cast<T>(self) -> Result<T, Self> where
T: ObjectType, [src]
T: ObjectType,
fn dynamic_cast_ref<T>(&self) -> Option<&T> where
T: ObjectType, [src]
T: ObjectType,
unsafe fn unsafe_cast<T>(self) -> T where
T: ObjectType, [src]
T: ObjectType,
unsafe fn unsafe_cast_ref<T>(&self) -> &T where
T: ObjectType, [src]
T: ObjectType,
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<T> ObjectExt for T where
T: ObjectType, [src]
T: ObjectType,
fn is<U>(&self) -> bool where
U: StaticType, [src]
U: StaticType,
fn get_type(&self) -> Type[src]
fn get_object_class(&self) -> &ObjectClass[src]
fn set_property<'a, N>(
&self,
property_name: N,
value: &dyn ToValue
) -> Result<(), BoolError> where
N: Into<&'a str>, [src]
&self,
property_name: N,
value: &dyn ToValue
) -> Result<(), BoolError> where
N: Into<&'a str>,
fn get_property<'a, N>(&self, property_name: N) -> Result<Value, BoolError> where
N: Into<&'a str>, [src]
N: Into<&'a str>,
fn block_signal(&self, handler_id: &SignalHandlerId)[src]
fn unblock_signal(&self, handler_id: &SignalHandlerId)[src]
fn stop_signal_emission(&self, signal_name: &str)[src]
fn disconnect(&self, handler_id: SignalHandlerId)[src]
fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId where
F: 'static + Send + Sync + Fn(&T, &ParamSpec), [src]
F: 'static + Send + Sync + Fn(&T, &ParamSpec),
unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: Fn(&T, &ParamSpec), [src]
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: Fn(&T, &ParamSpec),
fn notify<'a, N>(&self, property_name: N) where
N: Into<&'a str>, [src]
N: Into<&'a str>,
fn notify_by_pspec(&self, pspec: &ParamSpec)[src]
fn has_property<'a, N>(
&self,
property_name: N,
type_: Option<Type>
) -> Result<(), BoolError> where
N: Into<&'a str>, [src]
&self,
property_name: N,
type_: Option<Type>
) -> Result<(), BoolError> where
N: Into<&'a str>,
fn get_property_type<'a, N>(&self, property_name: N) -> Option<Type> where
N: Into<&'a str>, [src]
N: Into<&'a str>,
fn find_property<'a, N>(&self, property_name: N) -> Option<ParamSpec> where
N: Into<&'a str>, [src]
N: Into<&'a str>,
fn list_properties(&self) -> Vec<ParamSpec>[src]
fn connect<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
N: Into<&'a str>, [src]
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
N: Into<&'a str>,
fn connect_local<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + 'static,
N: Into<&'a str>, [src]
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + 'static,
N: Into<&'a str>,
unsafe fn connect_unsafe<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value>,
N: Into<&'a str>, [src]
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value>,
N: Into<&'a str>,
fn emit<'a, N>(
&self,
signal_name: N,
args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError> where
N: Into<&'a str>, [src]
&self,
signal_name: N,
args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError> where
N: Into<&'a str>,
fn downgrade(&self) -> WeakRef<T>[src]
fn bind_property<'a, O, N, M>(
&'a self,
source_property: N,
target: &'a O,
target_property: M
) -> BindingBuilder<'a> where
M: Into<&'a str>,
N: Into<&'a str>,
O: ObjectType, [src]
&'a self,
source_property: N,
target: &'a O,
target_property: M
) -> BindingBuilder<'a> where
M: Into<&'a str>,
N: Into<&'a str>,
O: ObjectType,
fn ref_count(&self) -> u32[src]
impl<'a, T> ToGlibContainerFromSlice<'a, *const GList> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, [src]
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<List>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)[src]
t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)
fn to_glib_container_from_slice(
_t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)[src]
_t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)
fn to_glib_full_from_slice(_t: &[T]) -> *const GList[src]
impl<'a, T> ToGlibContainerFromSlice<'a, *const GPtrArray> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, [src]
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<PtrArray>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)[src]
t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)
fn to_glib_container_from_slice(
_t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)[src]
_t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)
fn to_glib_full_from_slice(_t: &[T]) -> *const GPtrArray[src]
impl<'a, T> ToGlibContainerFromSlice<'a, *mut GArray> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, [src]
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<Array>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)[src]
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)
fn to_glib_container_from_slice(
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)[src]
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)
fn to_glib_full_from_slice(t: &[T]) -> *mut GArray[src]
impl<'a, T> ToGlibContainerFromSlice<'a, *mut GList> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, [src]
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<List>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)[src]
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)
fn to_glib_container_from_slice(
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)[src]
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)
fn to_glib_full_from_slice(t: &[T]) -> *mut GList[src]
impl<'a, T> ToGlibContainerFromSlice<'a, *mut GPtrArray> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, [src]
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<PtrArray>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)[src]
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)
fn to_glib_container_from_slice(
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)[src]
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)
fn to_glib_full_from_slice(t: &[T]) -> *mut GPtrArray[src]
impl<T> ToOwned for T where
T: Clone, [src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T[src]
fn clone_into(&self, target: &mut T)[src]
impl<T> ToSendValue for T where
T: ToValue + SetValue + Send + ?Sized, [src]
T: ToValue + SetValue + Send + ?Sized,
fn to_send_value(&self) -> SendValue[src]
impl<T> ToValue for T where
T: SetValue + ?Sized, [src]
T: SetValue + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,