58 lines
1.4 KiB
Rust
58 lines
1.4 KiB
Rust
//! Decoding and Encoding of TIFF Images
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//!
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//! TIFF (Tagged Image File Format) is a versatile image format that supports
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//! lossless and lossy compression.
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//!
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//! # Related Links
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//! * <https://web.archive.org/web/20210108073850/https://www.adobe.io/open/standards/TIFF.html> - The TIFF specification
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mod bytecast;
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pub mod decoder;
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pub mod encoder;
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mod error;
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pub mod tags;
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pub use self::error::{TiffError, TiffFormatError, TiffResult, TiffUnsupportedError, UsageError};
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/// An enumeration over supported color types and their bit depths
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#[derive(Copy, PartialEq, Eq, Debug, Clone, Hash)]
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pub enum ColorType {
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/// Pixel is grayscale
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Gray(u8),
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/// Pixel contains R, G and B channels
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RGB(u8),
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/// Pixel is an index into a color palette
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Palette(u8),
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/// Pixel is grayscale with an alpha channel
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GrayA(u8),
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/// Pixel is RGB with an alpha channel
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RGBA(u8),
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/// Pixel is CMYK
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CMYK(u8),
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/// Pixel is YCbCr
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YCbCr(u8),
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/// Pixel has multiple bands/channels
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Multiband { bit_depth: u8, num_samples: u16 },
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}
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impl ColorType {
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fn bit_depth(&self) -> u8 {
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match *self {
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ColorType::Gray(b)
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| ColorType::RGB(b)
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| ColorType::Palette(b)
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| ColorType::GrayA(b)
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| ColorType::RGBA(b)
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| ColorType::CMYK(b)
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| ColorType::YCbCr(b)
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| ColorType::Multiband { bit_depth: b, .. } => b,
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}
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}
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}
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