Type Definition skia_safe::YUVAInfo

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pub type YUVAInfo = Handle<SkYUVAInfo>;

Expand description

Specifies the structure of planes for a YUV image with optional alpha. The actual planar data is not part of this structure and depending on usage is in external textures or pixmaps.

Implementations§

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impl YUVAInfo

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pub const MAX_PLANES: usize = 4usize

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pub fn new( dimensions: impl Into<ISize>, config: PlaneConfig, subsampling: Subsampling, color_space: YUVColorSpace, origin: impl Into<Option<EncodedOrigin>>, siting_xy: impl Into<Option<(Siting, Siting)>> ) -> Option<Self>

dimensions should specify the size of the full resolution image (after planes have been oriented to how the image is displayed as indicated by origin).

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pub fn dimensions(&self) -> ISize

Dimensions of the full resolution image (after planes have been oriented to how the image is displayed as indicated by fOrigin).

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pub fn width(&self) -> i32

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pub fn height(&self) -> i32

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pub fn yuv_color_space(&self) -> YUVColorSpace

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pub fn siting_xy(&self) -> (Siting, Siting)

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pub fn origin(&self) -> EncodedOrigin

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pub fn origin_matrix(&self) -> Matrix

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pub fn has_alpha(&self) -> bool

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pub fn plane_dimensions(&self) -> Vec<ISize>

Returns the dimensions for each plane. Dimensions are as stored in memory, before transformation to image display space as indicated by [origin(&self)].

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pub fn compute_total_bytes( &self, row_bytes: &[usize; 4], plane_sizes: Option<&mut [usize; 4]> ) -> usize

Given a per-plane row bytes, determine size to allocate for all planes. Optionally retrieves the per-plane byte sizes in planeSizes if not None. If total size overflows will return SIZE_MAX and set all planeSizes to SIZE_MAX.

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pub fn num_planes(&self) -> usize

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pub fn num_channels_in_plane(&self, i: usize) -> Option<usize>

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pub fn with_subsampling(&self, subsampling: Subsampling) -> Option<Self>

Returns a YUVAInfo that is identical to this one but with the passed Subsampling. If the passed Subsampling is not Subsampling::S444 and this info’s PlaneConfig is not compatible with chroma subsampling (because Y is in the same plane as UV) then the result will be None.

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