Enum SwVideoCompositorError 

pub enum SwVideoCompositorError {
    Ffmpeg(Error),
    FrameRef(i32),
    InvalidOutputDimensions {
        width: u32,
        height: u32,
    },
    InvalidFrameRate(Rational),
    InvalidLayerDimensions {
        width: u32,
        height: u32,
    },
    InvalidOpacity(f32),
    InvalidSourceRegion {
        width: u32,
        height: u32,
    },
    InvalidInputDimensions {
        width: u32,
        height: u32,
    },
    ScaledLayerTooLarge {
        width: u32,
        height: u32,
    },
    SourceRemoved,
    UnsupportedBuffer(&'static str),
    SeekUnsupported,
}

Errors specific to SwVideoCompositor.

Variants

Ffmpeg(Error)

FFmpeg rejected frame allocation or software scaling.

FrameRef(i32)

FFmpeg could not take a second reference to the frame last composed, which is how an unchanged picture is offered again.

InvalidOutputDimensions

The output canvas dimensions are zero or exceed the safety limit.

Fields

width: u32

Invalid output width in pixels.

height: u32

Invalid output height in pixels.

InvalidFrameRate(Rational)

The output frame-rate numerator or denominator is non-positive.

InvalidLayerDimensions

A layer destination rectangle is zero-sized or exceeds the safety limit.

Fields

width: u32

Invalid layer width in output pixels.

height: u32

Invalid layer height in output pixels.

InvalidOpacity(f32)

A layer opacity is non-finite or outside 0.0..=1.0.

InvalidSourceRegion

A layer’s source region is empty. Hiding a layer is VideoLayer::visible; asking it to draw nothing is a mistake.

Fields

width: u32

Region width as given.

height: u32

Region height as given.

InvalidInputDimensions

An input frame reports a zero width or height.

Fields

width: u32

Invalid input width in pixels.

height: u32

Invalid input height in pixels.

ScaledLayerTooLarge

Aspect-ratio fitting would create an intermediate image above the safety limit.

Fields

width: u32

Computed scaled width in pixels.

height: u32

Computed scaled height in pixels.

SourceRemoved

A runtime layer handle refers to an input that has been removed or replaced.

UnsupportedBuffer(&'static str)

An input sink received a buffer other than decoded video.

SeekUnsupported

Seeking was requested on a live compositor with no stored timeline.

Trait Implementations

impl Debug for SwVideoCompositorError

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

Formats the value using the given formatter.

impl Display for SwVideoCompositorError

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

Formats the value using the given formatter.

impl Error for SwVideoCompositorError

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 From<Error> for SwVideoCompositorError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<SwVideoCompositorError> for Error

fn from(source: SwVideoCompositorError) -> Self

Converts to this type from the input type.