Enum HardwareDecodeFallback 

pub enum HardwareDecodeFallback {
    ContextUnavailable,
    NoHardwareConfig,
    UnsupportedColor,
    UnsupportedProfile,
    UnsupportedSurfaceFormat,
    SourceUnavailable,
    DecoderOpenFailed,
    ReverseWindow,
    UnsupportedCrop,
    ImportFailed,
}

Why a video source is decoded in software instead of on the GPU.

Recorded per source so a run can report what prevented the hardware path rather than leaving an unexplained software fallback.

Variants

ContextUnavailable

No shared GPU decode context was created for this run.

NoHardwareConfig

The codec exposes no hardware configuration for this backend.

UnsupportedColor

The stream declares a color space the hardware path does not present.

UnsupportedProfile

The stream’s chroma subsampling or bit depth has no resident path on this device, such as 4:2:2, 4:4:4, or 10-bit without P010 support.

UnsupportedSurfaceFormat

The decoder produced a surface format that cannot be imported.

SourceUnavailable

The container or stream could not be opened at all.

DecoderOpenFailed

The hardware decoder rejected this stream while opening.

ReverseWindow

Reverse playback keeps this cursor on the software decoder.

UnsupportedCrop

The stream’s SPS crops its left or top edge, which this backend’s surfaces do not show: VideoToolbox hands back the coded picture’s top-left corner with the crop cleared. A D3D12VA picture that reaches past its surface is refused the same way.

ImportFailed

The renderer could not import a decoded surface, so its pixels were downloaded and uploaded from the CPU instead.

Implementations

impl HardwareDecodeFallback

pub const fn as_str(self) -> &'static str

Stable key used when reporting fallback counts.

Trait Implementations

impl Clone for HardwareDecodeFallback

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 HardwareDecodeFallback

impl Debug for HardwareDecodeFallback

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

Formats the value using the given formatter.

impl Eq for HardwareDecodeFallback

impl Hash for HardwareDecodeFallback

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for HardwareDecodeFallback

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

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

Restrict a value to a certain range.

impl PartialEq for HardwareDecodeFallback

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for HardwareDecodeFallback

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for HardwareDecodeFallback