1 files changed, 0 insertions, 149 deletions
diff --git a/alligator_tvg/src/header.rs b/alligator_tvg/src/header.rs
deleted file mode 100644
index b3be494..0000000
--- a/alligator_tvg/src/header.rs
+++ /dev/null
@@ -1,149 +0,0 @@
-use std::io::{self, Read};
-
-use byteorder::{LittleEndian, ReadBytesExt};
-use num_enum::TryFromPrimitive;
-use raise::yeet;
-
-use crate::colors::ColorEncoding;
-use crate::read_varuint;
-use crate::TvgError;
-
-const MAGIC: [u8; 2] = [0x72, 0x56];
-pub const SUPPORTED_VERSION: u8 = 1;
-
-/// The coordinate range defines how many bits a Unit value uses.
-#[derive(Debug, Default, Clone, Copy, PartialEq, Eq, Hash, TryFromPrimitive)]
-#[repr(u8)]
-pub enum CoordinateRange {
-	/// Each [`Unit`] takes up 16 bits.
-	#[default]
-	Default = 0,
-	/// Each [`Unit`] takes up 8 bits.
-	Reduced = 1,
-	/// Each [`Unit`] takes up 32 bits.
-	Enhanced = 2,
-}
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, TryFromPrimitive)]
-#[repr(u8)]
-pub enum Scale {
-	_1 = 0,
-	_2 = 1,
-	_4 = 2,
-	_8 = 3,
-	_16 = 4,
-	_32 = 5,
-	_64 = 6,
-	_128 = 7,
-	_256 = 8,
-	_512 = 9,
-	_1024 = 10,
-	_2048 = 11,
-	_4096 = 12,
-	_8192 = 13,
-	_16384 = 14,
-	_32768 = 15,
-}
-
-/// Each TVG file starts with a header defining some global values for the file
-/// like scale and image size. This is a representation of the header, but not
-/// necessarily an exact representation of the bits of a TVG header.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub struct TvgHeader {
-	/// Must always be [0x72, 0x56]
-	magic: [u8; 2],
-	/// Must be 1. For future versions, this field might decide how the rest of
-	/// the format looks like.
-	version: u8,
-	/// Defines the number of fraction bits in a Unit value.
-	scale: Scale,
-	/// Defines the type of color information that is used in the
-	/// [`ColorTable`].
-	color_encoding: ColorEncoding,
-	/// Defines the number of total bits in a Unit value and thus the overall
-	/// precision of the file.
-	coordinate_range: CoordinateRange,
-	/// Encodes the maximum width of the output file in *display units*.
-	///
-	/// A value of 0 indicates that the image has the maximum possible width.
-	width: u32,
-	/// Encodes the maximum height of the output file in *display units*.
-	///
-	/// A value of 0 indicates that the image has the maximum possible height.
-	height: u32,
-	/// The number of colors in the color table.
-	color_count: u32,
-}
-
-impl TvgHeader {
-	pub fn read<R: Read>(reader: &mut R) -> Result<Self, TvgError> {
-		// magic number is used as a first line defense against invalid data
-		let magic = [reader.read_u8()?, reader.read_u8()?];
-		if magic != MAGIC {
-			yeet!(TvgError::InvalidFile);
-		}
-
-		// the version of tvg being used
-		let version = reader.read_u8()?;
-		if version != SUPPORTED_VERSION {
-			yeet!(TvgError::UnsupportedVersion(version))
-		}
-
-		// scale, color_encoding, and coordinate_range are stored in one byte
-		let byte = reader.read_u8()?;
-		let scale = Scale::try_from_primitive(byte & 0b0000_1111).expect("invalid scale");
-		let color_encoding = ColorEncoding::try_from_primitive((byte & 0b0011_0000) >> 4)
-			.expect("invalid color encoding");
-		let coordinate_range = CoordinateRange::try_from_primitive((byte & 0b1100_0000) >> 6)
-			.expect("invalid coordinate range");
-
-		// width and height depend on the coordinate range
-		let width = read_unsigned_unit(coordinate_range, reader)?;
-		let height = read_unsigned_unit(coordinate_range, reader)?;
-
-		let color_count = read_varuint(reader)?;
-
-		Ok(Self {
-			magic,
-			version,
-			scale,
-			color_encoding,
-			coordinate_range,
-			width,
-			height,
-			color_count,
-		})
-	}
-
-	/// Defines the number of total bits in a Unit value and thus the overall
-	/// precision of the file.
-	pub fn coordinate_range(&self) -> CoordinateRange {
-		self.coordinate_range
-	}
-
-	/// Defines the type of color information that is used in the [`ColorTable`].
-	pub fn color_encoding(&self) -> ColorEncoding {
-		self.color_encoding
-	}
-
-	/// Defines the number of fraction bits in a Unit value.
-	pub fn scale(&self) -> Scale {
-		self.scale
-	}
-
-	/// The number of colors in the [`ColorTable`].
-	pub fn color_count(&self) -> u32 {
-		self.color_count
-	}
-}
-
-fn read_unsigned_unit<R: Read>(
-	coordinate_range: CoordinateRange,
-	bytes: &mut R,
-) -> io::Result<u32> {
-	Ok(match coordinate_range {
-		CoordinateRange::Reduced => bytes.read_u8()? as u32,
-		CoordinateRange::Default => bytes.read_u16::<LittleEndian>()? as u32,
-		CoordinateRange::Enhanced => bytes.read_u32::<LittleEndian>()?,
-	})
-}