Struct pw_stream_events

#[repr(C)]
pub struct pw_stream_events {
    pub version: u32,
    pub destroy: Option<unsafe extern "C" fn(data: *mut c_void)>,
    pub state_changed: Option<unsafe extern "C" fn(data: *mut c_void, old: pw_stream_state, state: pw_stream_state, error: *const c_char)>,
    pub control_info: Option<unsafe extern "C" fn(data: *mut c_void, id: u32, control: *const pw_stream_control)>,
    pub io_changed: Option<unsafe extern "C" fn(data: *mut c_void, id: u32, area: *mut c_void, size: u32)>,
    pub param_changed: Option<unsafe extern "C" fn(data: *mut c_void, id: u32, param: *const spa_pod)>,
    pub add_buffer: Option<unsafe extern "C" fn(data: *mut c_void, buffer: *mut pw_buffer)>,
    pub remove_buffer: Option<unsafe extern "C" fn(data: *mut c_void, buffer: *mut pw_buffer)>,
    pub process: Option<unsafe extern "C" fn(data: *mut c_void)>,
    pub drained: Option<unsafe extern "C" fn(data: *mut c_void)>,
    pub command: Option<unsafe extern "C" fn(data: *mut c_void, command: *const spa_command)>,
    pub trigger_done: Option<unsafe extern "C" fn(data: *mut c_void)>,
}

Events for a stream. These events are always called from the mainloop unless explicitly documented otherwise.

Fields

version: u32

destroy: Option<unsafe extern "C" fn(data: *mut c_void)>

state_changed: Option<unsafe extern "C" fn(data: *mut c_void, old: pw_stream_state, state: pw_stream_state, error: *const c_char)>

when the stream state changes. Since 1.4 this also sets errno when the new state is PW_STREAM_STATE_ERROR

control_info: Option<unsafe extern "C" fn(data: *mut c_void, id: u32, control: *const pw_stream_control)>

Notify information about a control.

io_changed: Option<unsafe extern "C" fn(data: *mut c_void, id: u32, area: *mut c_void, size: u32)>

when io changed on the stream.

param_changed: Option<unsafe extern "C" fn(data: *mut c_void, id: u32, param: *const spa_pod)>

when a parameter changed

add_buffer: Option<unsafe extern "C" fn(data: *mut c_void, buffer: *mut pw_buffer)>

when a new buffer was created for this stream

remove_buffer: Option<unsafe extern "C" fn(data: *mut c_void, buffer: *mut pw_buffer)>

when a buffer was destroyed for this stream

process: Option<unsafe extern "C" fn(data: *mut c_void)>

when a buffer can be queued (for playback streams) or dequeued (for capture streams). This is normally called from the mainloop but can also be called directly from the realtime data thread if the user is prepared to deal with this.

drained: Option<unsafe extern "C" fn(data: *mut c_void)>

The stream is drained

command: Option<unsafe extern "C" fn(data: *mut c_void, command: *const spa_command)>

A command notify, Since 0.3.39:1

trigger_done: Option<unsafe extern "C" fn(data: *mut c_void)>

a trigger_process completed. Since version 0.3.40:2. This is normally called from the mainloop but since 1.1.0 it can also be called directly from the realtime data thread if the user is prepared to deal with this.

Trait Implementations

impl Clone for pw_stream_events

fn clone(&self) -> pw_stream_events

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for pw_stream_events

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

Formats the value using the given formatter.

impl Copy for pw_stream_events