Struct libspa_sys::spa_node_callbacks

#[repr(C)]
pub struct spa_node_callbacks {
    pub version: u32,
    pub ready: Option<unsafe extern "C" fn(data: *mut c_void, state: c_int) -> c_int>,
    pub reuse_buffer: Option<unsafe extern "C" fn(data: *mut c_void, port_id: u32, buffer_id: u32) -> c_int>,
    pub xrun: Option<unsafe extern "C" fn(data: *mut c_void, trigger: u64, delay: u64, info: *mut spa_pod) -> c_int>,
}

Node callbacks

Callbacks are called from the real-time data thread. Only one callback structure can be set on an spa_node.

Fields

version: u32

ready: Option<unsafe extern "C" fn(data: *mut c_void, state: c_int) -> c_int>

\param node a spa_node

The node is ready for processing.

When this function is NULL, synchronous operation is requested on the ports.

reuse_buffer: Option<unsafe extern "C" fn(data: *mut c_void, port_id: u32, buffer_id: u32) -> c_int>

\param node a spa_node \param port_id an input port_id \param buffer_id the buffer id to be reused

The node has a buffer that can be reused.

When this function is NULL, the buffers to reuse will be set in the io area of the input ports.

xrun: Option<unsafe extern "C" fn(data: *mut c_void, trigger: u64, delay: u64, info: *mut spa_pod) -> c_int>

\param data user data \param trigger the timestamp in microseconds when the xrun happened \param delay the amount of microseconds of xrun. \param info an object with extra info (NULL for now)

The node has encountered an over or underrun

The info contains an object with more information

Trait Implementations

impl Clone for spa_node_callbacks

fn clone(&self) -> spa_node_callbacks

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for spa_node_callbacks

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

Formats the value using the given formatter.

impl PartialEq for spa_node_callbacks

fn eq(&self, other: &spa_node_callbacks) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for spa_node_callbacks

impl Eq for spa_node_callbacks

impl StructuralPartialEq for spa_node_callbacks