Type Alias CTelemetryCallback 

pub type CTelemetryCallback = Option<extern "C" fn(*const c_char, *const u8, usize, *const CPacketMetadata, *mut c_void) -> CResult>;

Callback function type for emitting telemetry events to the host.

Parameters:

• event_type: null-terminated UTF-8 string (e.g., “vad.speech_start”)
• data_json: UTF-8 JSON bytes (not null-terminated)
• data_len: length of data_json
• metadata: optional packet-style metadata (may be null)
• user_data: opaque pointer provided by the host

Aliased Type

pub enum CTelemetryCallback {
    None,
    Some(extern "C" fn(*const i8, *const u8, usize, *const CPacketMetadata, *mut c_void) -> CResult),
}

Variants

None

No value.

Some(extern "C" fn(*const i8, *const u8, usize, *const CPacketMetadata, *mut c_void) -> CResult)

Some value of type T.