#[repr(C)]
pub struct pw_session_methods { pub version: u32, pub add_listener: Option<unsafe extern "C" fn(object: *mut c_void, listener: *mut spa_hook, events: *const pw_session_events, data: *mut c_void) -> c_int>, pub subscribe_params: Option<unsafe extern "C" fn(object: *mut c_void, ids: *mut u32, n_ids: u32) -> c_int>, pub enum_params: Option<unsafe extern "C" fn(object: *mut c_void, seq: c_int, id: u32, start: u32, num: u32, filter: *const spa_pod) -> c_int>, pub set_param: Option<unsafe extern "C" fn(object: *mut c_void, id: u32, flags: u32, param: *const spa_pod) -> c_int>, }

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§version: u32

< version of this structure

§add_listener: Option<unsafe extern "C" fn(object: *mut c_void, listener: *mut spa_hook, events: *const pw_session_events, data: *mut c_void) -> c_int>§subscribe_params: Option<unsafe extern "C" fn(object: *mut c_void, ids: *mut u32, n_ids: u32) -> c_int>

Subscribe to parameter changes

Automatically emit param events for the given ids when they are changed.

\param ids an array of param ids \param n_ids the number of ids in \a ids

This requires X permissions.

§enum_params: Option<unsafe extern "C" fn(object: *mut c_void, seq: c_int, id: u32, start: u32, num: u32, filter: *const spa_pod) -> c_int>

Enumerate session parameters

Start enumeration of session parameters. For each param, a param event will be emitted.

\param seq a sequence number returned in the reply \param id the parameter id to enumerate \param start the start index or 0 for the first param \param num the maximum number of params to retrieve \param filter a param filter or NULL

This requires X permissions.

§set_param: Option<unsafe extern "C" fn(object: *mut c_void, id: u32, flags: u32, param: *const spa_pod) -> c_int>

Set a parameter on the session

\param id the parameter id to set \param flags extra parameter flags \param param the parameter to set

This requires X and W permissions.

Trait Implementations§

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impl Clone for pw_session_methods

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fn clone(&self) -> pw_session_methods

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for pw_session_methods

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

Formats the value using the given formatter. Read more
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impl Copy for pw_session_methods

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.