Deleted vendor folder

1 files changed, 0 insertions, 821 deletions

diff --git a/vendor/exr/src/meta/mod.rs b/vendor/exr/src/meta/mod.rs
deleted file mode 100644
index 0c36af8..0000000
--- a/vendor/exr/src/meta/mod.rs
+++ /dev/null
@@ -1,821 +0,0 @@
-
-//! Describes all meta data possible in an exr file.
-//! Contains functionality to read and write meta data from bytes.
-//! Browse the `exr::image` module to get started with the high-level interface.
-
-pub mod attribute;
-pub mod header;
-
-
-use crate::io::*;
-use ::smallvec::SmallVec;
-use self::attribute::*;
-use crate::block::chunk::{TileCoordinates, CompressedBlock};
-use crate::error::*;
-use std::fs::File;
-use std::io::{BufReader};
-use crate::math::*;
-use std::collections::{HashSet};
-use std::convert::TryFrom;
-use crate::meta::header::{Header};
-use crate::block::{BlockIndex, UncompressedBlock};
-
-
-// TODO rename MetaData to ImageInfo?
-
-/// Contains the complete meta data of an exr image.
-/// Defines how the image is split up in the file,
-/// the number and type of images and channels,
-/// and various other attributes.
-/// The usage of custom attributes is encouraged.
-#[derive(Debug, Clone, PartialEq)]
-pub struct MetaData {
-
-    /// Some flags summarizing the features that must be supported to decode the file.
-    pub requirements: Requirements,
-
-    /// One header to describe each layer in this file.
-    // TODO rename to layer descriptions?
-    pub headers: Headers,
-}
-
-
-/// List of `Header`s.
-pub type Headers = SmallVec<[Header; 3]>;
-
-/// List of `OffsetTable`s.
-pub type OffsetTables = SmallVec<[OffsetTable; 3]>;
-
-
-/// The offset table is an ordered list of indices referencing pixel data in the exr file.
-/// For each pixel tile in the image, an index exists, which points to the byte-location
-/// of the corresponding pixel data in the file. That index can be used to load specific
-/// portions of an image without processing all bytes in a file. For each header,
-/// an offset table exists with its indices ordered by `LineOrder::Increasing`.
-// If the multipart bit is unset and the chunkCount attribute is not present,
-// the number of entries in the chunk table is computed using the
-// dataWindow, tileDesc, and compression attribute.
-//
-// If the multipart bit is set, the header must contain a
-// chunkCount attribute, that contains the length of the offset table.
-pub type OffsetTable = Vec<u64>;
-
-
-/// A summary of requirements that must be met to read this exr file.
-/// Used to determine whether this file can be read by a given reader.
-/// It includes the OpenEXR version number. This library aims to support version `2.0`.
-#[derive(Clone, Copy, Eq, PartialEq, Debug, Hash)]
-pub struct Requirements {
-
-    /// This library supports reading version 1 and 2, and writing version 2.
-    // TODO write version 1 for simple images
-    pub file_format_version: u8,
-
-    /// If true, this image has tiled blocks and contains only a single layer.
-    /// If false and not deep and not multilayer, this image is a single layer image with scan line blocks.
-    pub is_single_layer_and_tiled: bool,
-
-    // in c or bad c++ this might have been relevant (omg is he allowed to say that)
-    /// Whether this file has strings with a length greater than 31.
-    /// Strings can never be longer than 255.
-    pub has_long_names: bool,
-
-    /// This image contains at least one layer with deep data.
-    pub has_deep_data: bool,
-
-    /// Whether this file contains multiple layers.
-    pub has_multiple_layers: bool,
-}
-
-
-/// Locates a rectangular section of pixels in an image.
-#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
-pub struct TileIndices {
-
-    /// Index of the tile.
-    pub location: TileCoordinates,
-
-    /// Pixel size of the tile.
-    pub size: Vec2<usize>,
-}
-
-/// How the image pixels are split up into separate blocks.
-#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
-pub enum BlockDescription {
-
-    /// The image is divided into scan line blocks.
-    /// The number of scan lines in a block depends on the compression method.
-    ScanLines,
-
-    /// The image is divided into tile blocks.
-    /// Also specifies the size of each tile in the image
-    /// and whether this image contains multiple resolution levels.
-    Tiles(TileDescription)
-}
-
-
-/*impl TileIndices {
-    pub fn cmp(&self, other: &Self) -> Ordering {
-        match self.location.level_index.1.cmp(&other.location.level_index.1) {
-            Ordering::Equal => {
-                match self.location.level_index.0.cmp(&other.location.level_index.0) {
-                    Ordering::Equal => {
-                        match self.location.tile_index.1.cmp(&other.location.tile_index.1) {
-                            Ordering::Equal => {
-                                self.location.tile_index.0.cmp(&other.location.tile_index.0)
-                            },
-
-                            other => other,
-                        }
-                    },
-
-                    other => other
-                }
-            },
-
-            other => other
-        }
-    }
-}*/
-
-impl BlockDescription {
-
-    /// Whether this image is tiled. If false, this image is divided into scan line blocks.
-    pub fn has_tiles(&self) -> bool {
-        match self {
-            BlockDescription::Tiles { .. } => true,
-            _ => false
-        }
-    }
-}
-
-
-
-
-
-/// The first four bytes of each exr file.
-/// Used to abort reading non-exr files.
-pub mod magic_number {
-    use super::*;
-
-    /// The first four bytes of each exr file.
-    pub const BYTES: [u8; 4] = [0x76, 0x2f, 0x31, 0x01];
-
-    /// Without validation, write this instance to the byte stream.
-    pub fn write(write: &mut impl Write) -> Result<()> {
-        u8::write_slice(write, &self::BYTES)
-    }
-
-    /// Consumes four bytes from the reader and returns whether the file may be an exr file.
-    // TODO check if exr before allocating BufRead
-    pub fn is_exr(read: &mut impl Read) -> Result<bool> {
-        let mut magic_num = [0; 4];
-        u8::read_slice(read, &mut magic_num)?;
-        Ok(magic_num == self::BYTES)
-    }
-
-    /// Validate this image. If it is an exr file, return `Ok(())`.
-    pub fn validate_exr(read: &mut impl Read) -> UnitResult {
-        if self::is_exr(read)? {
-            Ok(())
-
-        } else {
-            Err(Error::invalid("file identifier missing"))
-        }
-    }
-}
-
-/// A `0_u8` at the end of a sequence.
-pub mod sequence_end {
-    use super::*;
-
-    /// Number of bytes this would consume in an exr file.
-    pub fn byte_size() -> usize {
-        1
-    }
-
-    /// Without validation, write this instance to the byte stream.
-    pub fn write<W: Write>(write: &mut W) -> UnitResult {
-        0_u8.write(write)
-    }
-
-    /// Peeks the next byte. If it is zero, consumes the byte and returns true.
-    pub fn has_come(read: &mut PeekRead<impl Read>) -> Result<bool> {
-        Ok(read.skip_if_eq(0)?)
-    }
-}
-
-fn missing_attribute(name: &str) -> Error {
-    Error::invalid(format!("missing or invalid {} attribute", name))
-}
-
-
-/// Compute the number of tiles required to contain all values.
-pub fn compute_block_count(full_res: usize, tile_size: usize) -> usize {
-    // round up, because if the image is not evenly divisible by the tiles,
-    // we add another tile at the end (which is only partially used)
-    RoundingMode::Up.divide(full_res, tile_size)
-}
-
-/// Compute the start position and size of a block inside a dimension.
-#[inline]
-pub fn calculate_block_position_and_size(total_size: usize, block_size: usize, block_index: usize) -> Result<(usize, usize)> {
-    let block_position = block_size * block_index;
-
-    Ok((
-        block_position,
-        calculate_block_size(total_size, block_size, block_position)?
-    ))
-}
-
-/// Calculate the size of a single block. If this is the last block,
-/// this only returns the required size, which is always smaller than the default block size.
-// TODO use this method everywhere instead of convoluted formulas
-#[inline]
-pub fn calculate_block_size(total_size: usize, block_size: usize, block_position: usize) -> Result<usize> {
-    if block_position >= total_size {
-        return Err(Error::invalid("block index"))
-    }
-
-    if block_position + block_size <= total_size {
-        Ok(block_size)
-    }
-    else {
-        Ok(total_size - block_position)
-    }
-}
-
-
-/// Calculate number of mip levels in a given resolution.
-// TODO this should be cached? log2 may be very expensive
-pub fn compute_level_count(round: RoundingMode, full_res: usize) -> usize {
-    usize::try_from(round.log2(u32::try_from(full_res).unwrap())).unwrap() + 1
-}
-
-/// Calculate the size of a single mip level by index.
-// TODO this should be cached? log2 may be very expensive
-pub fn compute_level_size(round: RoundingMode, full_res: usize, level_index: usize) -> usize {
-    assert!(level_index < std::mem::size_of::<usize>() * 8, "largest level size exceeds maximum integer value");
-    round.divide(full_res,  1 << level_index).max(1)
-}
-
-/// Iterates over all rip map level resolutions of a given size, including the indices of each level.
-/// The order of iteration conforms to `LineOrder::Increasing`.
-// TODO cache these?
-// TODO compute these directly instead of summing up an iterator?
-pub fn rip_map_levels(round: RoundingMode, max_resolution: Vec2<usize>) -> impl Iterator<Item=(Vec2<usize>, Vec2<usize>)> {
-    rip_map_indices(round, max_resolution).map(move |level_indices|{
-        // TODO progressively divide instead??
-        let width = compute_level_size(round, max_resolution.width(), level_indices.x());
-        let height = compute_level_size(round, max_resolution.height(), level_indices.y());
-        (level_indices, Vec2(width, height))
-    })
-}
-
-/// Iterates over all mip map level resolutions of a given size, including the indices of each level.
-/// The order of iteration conforms to `LineOrder::Increasing`.
-// TODO cache all these level values when computing table offset size??
-// TODO compute these directly instead of summing up an iterator?
-pub fn mip_map_levels(round: RoundingMode, max_resolution: Vec2<usize>) -> impl Iterator<Item=(usize, Vec2<usize>)> {
-    mip_map_indices(round, max_resolution)
-        .map(move |level_index|{
-            // TODO progressively divide instead??
-            let width = compute_level_size(round, max_resolution.width(), level_index);
-            let height = compute_level_size(round, max_resolution.height(), level_index);
-            (level_index, Vec2(width, height))
-        })
-}
-
-/// Iterates over all rip map level indices of a given size.
-/// The order of iteration conforms to `LineOrder::Increasing`.
-pub fn rip_map_indices(round: RoundingMode, max_resolution: Vec2<usize>) -> impl Iterator<Item=Vec2<usize>> {
-    let (width, height) = (
-        compute_level_count(round, max_resolution.width()),
-        compute_level_count(round, max_resolution.height())
-    );
-
-    (0..height).flat_map(move |y_level|{
-        (0..width).map(move |x_level|{
-            Vec2(x_level, y_level)
-        })
-    })
-}
-
-/// Iterates over all mip map level indices of a given size.
-/// The order of iteration conforms to `LineOrder::Increasing`.
-pub fn mip_map_indices(round: RoundingMode, max_resolution: Vec2<usize>) -> impl Iterator<Item=usize> {
-    0..compute_level_count(round, max_resolution.width().max(max_resolution.height()))
-}
-
-/// Compute the number of chunks that an image is divided into. May be an expensive operation.
-// If not multilayer and chunkCount not present,
-// the number of entries in the chunk table is computed
-// using the dataWindow and tileDesc attributes and the compression format
-pub fn compute_chunk_count(compression: Compression, data_size: Vec2<usize>, blocks: BlockDescription) -> usize {
-
-    if let BlockDescription::Tiles(tiles) = blocks {
-        let round = tiles.rounding_mode;
-        let Vec2(tile_width, tile_height) = tiles.tile_size;
-
-        // TODO cache all these level values??
-        use crate::meta::attribute::LevelMode::*;
-        match tiles.level_mode {
-            Singular => {
-                let tiles_x = compute_block_count(data_size.width(), tile_width);
-                let tiles_y = compute_block_count(data_size.height(), tile_height);
-                tiles_x * tiles_y
-            }
-
-            MipMap => {
-                mip_map_levels(round, data_size).map(|(_, Vec2(level_width, level_height))| {
-                    compute_block_count(level_width, tile_width) * compute_block_count(level_height, tile_height)
-                }).sum()
-            },
-
-            RipMap => {
-                rip_map_levels(round, data_size).map(|(_, Vec2(level_width, level_height))| {
-                    compute_block_count(level_width, tile_width) * compute_block_count(level_height, tile_height)
-                }).sum()
-            }
-        }
-    }
-
-    // scan line blocks never have mip maps
-    else {
-        compute_block_count(data_size.height(), compression.scan_lines_per_block())
-    }
-}
-
-
-
-impl MetaData {
-
-    /// Read the exr meta data from a file.
-    /// Use `read_from_unbuffered` instead if you do not have a file.
-    /// Does not validate the meta data.
-    #[must_use]
-    pub fn read_from_file(path: impl AsRef<::std::path::Path>, pedantic: bool) -> Result<Self> {
-        Self::read_from_unbuffered(File::open(path)?, pedantic)
-    }
-
-    /// Buffer the reader and then read the exr meta data from it.
-    /// Use `read_from_buffered` if your reader is an in-memory reader.
-    /// Use `read_from_file` if you have a file path.
-    /// Does not validate the meta data.
-    #[must_use]
-    pub fn read_from_unbuffered(unbuffered: impl Read, pedantic: bool) -> Result<Self> {
-        Self::read_from_buffered(BufReader::new(unbuffered), pedantic)
-    }
-
-    /// Read the exr meta data from a reader.
-    /// Use `read_from_file` if you have a file path.
-    /// Use `read_from_unbuffered` if this is not an in-memory reader.
-    /// Does not validate the meta data.
-    #[must_use]
-    pub fn read_from_buffered(buffered: impl Read, pedantic: bool) -> Result<Self> {
-        let mut read = PeekRead::new(buffered);
-        MetaData::read_unvalidated_from_buffered_peekable(&mut read, pedantic)
-    }
-
-    /// Does __not validate__ the meta data completely.
-    #[must_use]
-    pub(crate) fn read_unvalidated_from_buffered_peekable(read: &mut PeekRead<impl Read>, pedantic: bool) -> Result<Self> {
-        magic_number::validate_exr(read)?;
-
-        let requirements = Requirements::read(read)?;
-
-        // do this check now in order to fast-fail for newer versions and features than version 2
-        requirements.validate()?;
-
-        let headers = Header::read_all(read, &requirements, pedantic)?;
-
-        // TODO check if supporting requirements 2 always implies supporting requirements 1
-        Ok(MetaData { requirements, headers })
-    }
-
-    /// Validates the meta data.
-    #[must_use]
-    pub(crate) fn read_validated_from_buffered_peekable(
-        read: &mut PeekRead<impl Read>, pedantic: bool
-    ) -> Result<Self> {
-        let meta_data = Self::read_unvalidated_from_buffered_peekable(read, !pedantic)?;
-        MetaData::validate(meta_data.headers.as_slice(), pedantic)?;
-        Ok(meta_data)
-    }
-
-    /// Validates the meta data and writes it to the stream.
-    /// If pedantic, throws errors for files that may produce errors in other exr readers.
-    /// Returns the automatically detected minimum requirement flags.
-    pub(crate) fn write_validating_to_buffered(write: &mut impl Write, headers: &[Header], pedantic: bool) -> Result<Requirements> {
-        // pedantic validation to not allow slightly invalid files
-        // that still could be read correctly in theory
-        let minimal_requirements = Self::validate(headers, pedantic)?;
-
-        magic_number::write(write)?;
-        minimal_requirements.write(write)?;
-        Header::write_all(headers, write, minimal_requirements.has_multiple_layers)?;
-        Ok(minimal_requirements)
-    }
-
-    /// Read one offset table from the reader for each header.
-    pub fn read_offset_tables(read: &mut PeekRead<impl Read>, headers: &Headers) -> Result<OffsetTables> {
-        headers.iter()
-            .map(|header| u64::read_vec(read, header.chunk_count, u16::MAX as usize, None, "offset table size"))
-            .collect()
-    }
-
-    /// Skip the offset tables by advancing the reader by the required byte count.
-    // TODO use seek for large (probably all) tables!
-    pub fn skip_offset_tables(read: &mut PeekRead<impl Read>, headers: &Headers) -> Result<usize> {
-        let chunk_count: usize = headers.iter().map(|header| header.chunk_count).sum();
-        crate::io::skip_bytes(read, chunk_count * u64::BYTE_SIZE)?; // TODO this should seek for large tables
-        Ok(chunk_count)
-    }
-
-    /// This iterator tells you the block indices of all blocks that must be in the image.
-    /// The order of the blocks depends on the `LineOrder` attribute
-    /// (unspecified line order is treated the same as increasing line order).
-    /// The blocks written to the file must be exactly in this order,
-    /// except for when the `LineOrder` is unspecified.
-    /// The index represents the block index, in increasing line order, within the header.
-    pub fn enumerate_ordered_header_block_indices(&self) -> impl '_ + Iterator<Item=(usize, BlockIndex)> {
-        crate::block::enumerate_ordered_header_block_indices(&self.headers)
-    }
-
-    /// Go through all the block indices in the correct order and call the specified closure for each of these blocks.
-    /// That way, the blocks indices are filled with real block data and returned as an iterator.
-    /// The closure returns the an `UncompressedBlock` for each block index.
-    pub fn collect_ordered_blocks<'s>(&'s self, mut get_block: impl 's + FnMut(BlockIndex) -> UncompressedBlock)
-        -> impl 's + Iterator<Item=(usize, UncompressedBlock)>
-    {
-        self.enumerate_ordered_header_block_indices().map(move |(index_in_header, block_index)|{
-            (index_in_header, get_block(block_index))
-        })
-    }
-
-    /// Go through all the block indices in the correct order and call the specified closure for each of these blocks.
-    /// That way, the blocks indices are filled with real block data and returned as an iterator.
-    /// The closure returns the byte data for each block index.
-    pub fn collect_ordered_block_data<'s>(&'s self, mut get_block_data: impl 's + FnMut(BlockIndex) -> Vec<u8>)
-        -> impl 's + Iterator<Item=(usize, UncompressedBlock)>
-    {
-        self.collect_ordered_blocks(move |block_index|
-            UncompressedBlock { index: block_index, data: get_block_data(block_index) }
-        )
-    }
-
-    /// Validates this meta data. Returns the minimal possible requirements.
-    pub fn validate(headers: &[Header], pedantic: bool) -> Result<Requirements> {
-        if headers.len() == 0 {
-            return Err(Error::invalid("at least one layer is required"));
-        }
-
-        let deep = false; // TODO deep data
-        let is_multilayer = headers.len() > 1;
-        let first_header_has_tiles = headers.iter().next()
-            .map_or(false, |header| header.blocks.has_tiles());
-
-        let mut minimal_requirements = Requirements {
-            // according to the spec, version 2  should only be necessary if `is_multilayer || deep`.
-            // but the current open exr library does not support images with version 1, so always use version 2.
-            file_format_version: 2,
-
-            // start as low as possible, later increasing if required
-            has_long_names: false,
-
-            is_single_layer_and_tiled: !is_multilayer && first_header_has_tiles,
-            has_multiple_layers: is_multilayer,
-            has_deep_data: deep,
-        };
-
-        for header in headers {
-            if header.deep { // TODO deep data (and then remove this check)
-                return Err(Error::unsupported("deep data not supported yet"));
-            }
-
-            header.validate(is_multilayer, &mut minimal_requirements.has_long_names, pedantic)?;
-        }
-
-        // TODO validation fn!
-        /*if let Some(max) = max_pixel_bytes {
-            let byte_size: usize = headers.iter()
-                .map(|header| header.total_pixel_bytes())
-                .sum();
-
-            if byte_size > max {
-                return Err(Error::invalid("image larger than specified maximum"));
-            }
-        }*/
-
-        if pedantic { // check for duplicate header names
-            let mut header_names = HashSet::with_capacity(headers.len());
-            for header in headers {
-                if !header_names.insert(&header.own_attributes.layer_name) {
-                    return Err(Error::invalid(format!(
-                        "duplicate layer name: `{}`",
-                        header.own_attributes.layer_name.as_ref().expect("header validation bug")
-                    )));
-                }
-            }
-        }
-
-        if pedantic {
-            let must_share = headers.iter().flat_map(|header| header.own_attributes.other.iter())
-                .any(|(_, value)| value.to_chromaticities().is_ok() || value.to_time_code().is_ok());
-
-            if must_share {
-                return Err(Error::invalid("chromaticities and time code attributes must must not exist in own attributes but shared instead"));
-            }
-        }
-
-        if pedantic && headers.len() > 1 { // check for attributes that should not differ in between headers
-            let first_header = headers.first().expect("header count validation bug");
-            let first_header_attributes = &first_header.shared_attributes;
-
-            for header in &headers[1..] {
-                if &header.shared_attributes != first_header_attributes {
-                    return Err(Error::invalid("display window, pixel aspect, chromaticities, and time code attributes must be equal for all headers"))
-                }
-            }
-        }
-
-        debug_assert!(minimal_requirements.validate().is_ok(), "inferred requirements are invalid");
-        Ok(minimal_requirements)
-    }
-}
-
-
-
-
-impl Requirements {
-
-    // this is actually used for control flow, as the number of headers may be 1 in a multilayer file
-    /// Is this file declared to contain multiple layers?
-    pub fn is_multilayer(&self) -> bool {
-        self.has_multiple_layers
-    }
-
-    /// Read the value without validating.
-    pub fn read<R: Read>(read: &mut R) -> Result<Self> {
-        use ::bit_field::BitField;
-
-        let version_and_flags = u32::read(read)?;
-
-        // take the 8 least significant bits, they contain the file format version number
-        let version = (version_and_flags & 0x000F) as u8;
-
-        // the 24 most significant bits are treated as a set of boolean flags
-        let is_single_tile = version_and_flags.get_bit(9);
-        let has_long_names = version_and_flags.get_bit(10);
-        let has_deep_data = version_and_flags.get_bit(11);
-        let has_multiple_layers = version_and_flags.get_bit(12);
-
-        // all remaining bits except 9, 10, 11 and 12 are reserved and should be 0
-        // if a file has any of these bits set to 1, it means this file contains
-        // a feature that we don't support
-        let unknown_flags = version_and_flags >> 13; // all flags excluding the 12 bits we already parsed
-
-        if unknown_flags != 0 { // TODO test if this correctly detects unsupported files
-            return Err(Error::unsupported("too new file feature flags"));
-        }
-
-        let version = Requirements {
-            file_format_version: version,
-            is_single_layer_and_tiled: is_single_tile, has_long_names,
-            has_deep_data, has_multiple_layers,
-        };
-
-        Ok(version)
-    }
-
-    /// Without validation, write this instance to the byte stream.
-    pub fn write<W: Write>(self, write: &mut W) -> UnitResult {
-        use ::bit_field::BitField;
-
-        // the 8 least significant bits contain the file format version number
-        // and the flags are set to 0
-        let mut version_and_flags = self.file_format_version as u32;
-
-        // the 24 most significant bits are treated as a set of boolean flags
-        version_and_flags.set_bit(9, self.is_single_layer_and_tiled);
-        version_and_flags.set_bit(10, self.has_long_names);
-        version_and_flags.set_bit(11, self.has_deep_data);
-        version_and_flags.set_bit(12, self.has_multiple_layers);
-        // all remaining bits except 9, 10, 11 and 12 are reserved and should be 0
-
-        version_and_flags.write(write)?;
-        Ok(())
-    }
-
-    /// Validate this instance.
-    pub fn validate(&self) -> UnitResult {
-        if self.file_format_version == 2 {
-
-            match (
-                self.is_single_layer_and_tiled, self.has_deep_data, self.has_multiple_layers,
-                self.file_format_version
-            ) {
-                // Single-part scan line. One normal scan line image.
-                (false, false, false, 1..=2) => Ok(()),
-
-                // Single-part tile. One normal tiled image.
-                (true, false, false, 1..=2) => Ok(()),
-
-                // Multi-part (new in 2.0).
-                // Multiple normal images (scan line and/or tiled).
-                (false, false, true, 2) => Ok(()),
-
-                // Single-part deep data (new in 2.0).
-                // One deep tile or deep scan line part
-                (false, true, false, 2) => Ok(()),
-
-                // Multi-part deep data (new in 2.0).
-                // Multiple parts (any combination of:
-                // tiles, scan lines, deep tiles and/or deep scan lines).
-                (false, true, true, 2) => Ok(()),
-
-                _ => Err(Error::invalid("file feature flags"))
-            }
-        }
-        else {
-            Err(Error::unsupported("file versions other than 2.0 are not supported"))
-        }
-    }
-}
-
-
-#[cfg(test)]
-mod test {
-    use super::*;
-    use crate::meta::header::{ImageAttributes, LayerAttributes};
-
-    #[test]
-    fn round_trip_requirements() {
-        let requirements = Requirements {
-            file_format_version: 2,
-            is_single_layer_and_tiled: true,
-            has_long_names: false,
-            has_deep_data: true,
-            has_multiple_layers: false
-        };
-
-        let mut data: Vec<u8> = Vec::new();
-        requirements.write(&mut data).unwrap();
-        let read = Requirements::read(&mut data.as_slice()).unwrap();
-        assert_eq!(requirements, read);
-    }
-
-    #[test]
-    fn round_trip(){
-        let header = Header {
-            channels: ChannelList::new(smallvec![
-                    ChannelDescription {
-                        name: Text::from("main"),
-                        sample_type: SampleType::U32,
-                        quantize_linearly: false,
-                        sampling: Vec2(1, 1)
-                    }
-                ],
-            ),
-            compression: Compression::Uncompressed,
-            line_order: LineOrder::Increasing,
-            deep_data_version: Some(1),
-            chunk_count: compute_chunk_count(Compression::Uncompressed, Vec2(2000, 333), BlockDescription::ScanLines),
-            max_samples_per_pixel: Some(4),
-            shared_attributes: ImageAttributes {
-                pixel_aspect: 3.0,
-                .. ImageAttributes::new(IntegerBounds {
-                    position: Vec2(2,1),
-                    size: Vec2(11, 9)
-                })
-            },
-
-            blocks: BlockDescription::ScanLines,
-            deep: false,
-            layer_size: Vec2(2000, 333),
-            own_attributes: LayerAttributes {
-                layer_name: Some(Text::from("test name lol")),
-                layer_position: Vec2(3, -5),
-                screen_window_center: Vec2(0.3, 99.0),
-                screen_window_width: 0.19,
-                .. Default::default()
-            }
-        };
-
-        let meta = MetaData {
-            requirements: Requirements {
-                file_format_version: 2,
-                is_single_layer_and_tiled: false,
-                has_long_names: false,
-                has_deep_data: false,
-                has_multiple_layers: false
-            },
-            headers: smallvec![ header ],
-        };
-
-
-        let mut data: Vec<u8> = Vec::new();
-        MetaData::write_validating_to_buffered(&mut data, meta.headers.as_slice(), true).unwrap();
-        let meta2 = MetaData::read_from_buffered(data.as_slice(), false).unwrap();
-        MetaData::validate(meta2.headers.as_slice(), true).unwrap();
-        assert_eq!(meta, meta2);
-    }
-
-    #[test]
-    fn infer_low_requirements() {
-        let header_version_1_short_names = Header {
-            channels: ChannelList::new(smallvec![
-                    ChannelDescription {
-                        name: Text::from("main"),
-                        sample_type: SampleType::U32,
-                        quantize_linearly: false,
-                        sampling: Vec2(1, 1)
-                    }
-                ],
-            ),
-            compression: Compression::Uncompressed,
-            line_order: LineOrder::Increasing,
-            deep_data_version: Some(1),
-            chunk_count: compute_chunk_count(Compression::Uncompressed, Vec2(2000, 333), BlockDescription::ScanLines),
-            max_samples_per_pixel: Some(4),
-            shared_attributes: ImageAttributes {
-                pixel_aspect: 3.0,
-                .. ImageAttributes::new(IntegerBounds {
-                    position: Vec2(2,1),
-                    size: Vec2(11, 9)
-                })
-            },
-            blocks: BlockDescription::ScanLines,
-            deep: false,
-            layer_size: Vec2(2000, 333),
-            own_attributes: LayerAttributes {
-                other: vec![
-                    (Text::try_from("x").unwrap(), AttributeValue::F32(3.0)),
-                    (Text::try_from("y").unwrap(), AttributeValue::F32(-1.0)),
-                ].into_iter().collect(),
-                .. Default::default()
-            }
-        };
-
-        let low_requirements = MetaData::validate(
-            &[header_version_1_short_names], true
-        ).unwrap();
-
-        assert_eq!(low_requirements.has_long_names, false);
-        assert_eq!(low_requirements.file_format_version, 2); // always have version 2
-        assert_eq!(low_requirements.has_deep_data, false);
-        assert_eq!(low_requirements.has_multiple_layers, false);
-    }
-
-    #[test]
-    fn infer_high_requirements() {
-        let header_version_2_long_names = Header {
-            channels: ChannelList::new(
-                smallvec![
-                    ChannelDescription {
-                        name: Text::new_or_panic("main"),
-                        sample_type: SampleType::U32,
-                        quantize_linearly: false,
-                        sampling: Vec2(1, 1)
-                    }
-                ],
-            ),
-            compression: Compression::Uncompressed,
-            line_order: LineOrder::Increasing,
-            deep_data_version: Some(1),
-            chunk_count: compute_chunk_count(Compression::Uncompressed, Vec2(2000, 333), BlockDescription::ScanLines),
-            max_samples_per_pixel: Some(4),
-            shared_attributes: ImageAttributes {
-                pixel_aspect: 3.0,
-                .. ImageAttributes::new(IntegerBounds {
-                    position: Vec2(2,1),
-                    size: Vec2(11, 9)
-                })
-            },
-            blocks: BlockDescription::ScanLines,
-            deep: false,
-            layer_size: Vec2(2000, 333),
-            own_attributes: LayerAttributes {
-                layer_name: Some(Text::new_or_panic("oasdasoidfj")),
-                other: vec![
-                    (Text::new_or_panic("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"), AttributeValue::F32(3.0)),
-                    (Text::new_or_panic("y"), AttributeValue::F32(-1.0)),
-                ].into_iter().collect(),
-                .. Default::default()
-            }
-        };
-
-        let mut layer_2 = header_version_2_long_names.clone();
-        layer_2.own_attributes.layer_name = Some(Text::new_or_panic("anythingelse"));
-
-        let low_requirements = MetaData::validate(
-            &[header_version_2_long_names, layer_2], true
-        ).unwrap();
-
-        assert_eq!(low_requirements.has_long_names, true);
-        assert_eq!(low_requirements.file_format_version, 2);
-        assert_eq!(low_requirements.has_deep_data, false);
-        assert_eq!(low_requirements.has_multiple_layers, true);
-    }
-}
-