Enum ScanoutError 

#[non_exhaustive]
pub enum ScanoutError {
    NothingConnected,
    ConnectorUnavailable {
        connector_id: u32,
    },
    NoCrtc {
        connector_id: u32,
    },
    NoPrimaryPlane {
        crtc_id: u32,
    },
}

Why no output could be found.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

NothingConnected

Nothing is plugged in, or nothing plugged in advertises a mode.

ConnectorUnavailable

The connector a caller asked for is not connected, advertises no mode, or does not exist.

Distinct from ScanoutError::NothingConnected: other outputs may be up, and driving one of them instead is exactly what pinning a connector is meant to rule out.

Fields

connector_id: u32

The connector asked for.

NoCrtc

A display is attached but no CRTC can drive it.

None of its encoders lists a CRTC it can drive, or none of them could be read. Whether a CRTC is already driving another output is not checked, here or in the reference.

Fields

connector_id: u32

The connector that could not be routed.

NoPrimaryPlane

A CRTC was found but has no primary plane.

Almost always means DRM_CLIENT_CAP_UNIVERSAL_PLANES was never set, which hides primary and cursor planes from the client.

Fields

crtc_id: u32

The CRTC that had none.

Trait Implementations

impl Clone for ScanoutError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ScanoutError

impl Debug for ScanoutError

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

Formats the value using the given formatter.

impl Display for ScanoutError

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

Formats the value using the given formatter.

impl Eq for ScanoutError

impl Error for ScanoutError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for ScanoutError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ScanoutError