Deleted vendor folder

1 files changed, 0 insertions, 1176 deletions

diff --git a/vendor/tiff/src/decoder/mod.rs b/vendor/tiff/src/decoder/mod.rs
deleted file mode 100644
index 5fa1812..0000000
--- a/vendor/tiff/src/decoder/mod.rs
+++ /dev/null
@@ -1,1176 +0,0 @@
-use std::collections::{HashMap, HashSet};
-use std::convert::TryFrom;
-use std::io::{self, Read, Seek};
-use std::ops::Range;
-
-use crate::{
-    bytecast, ColorType, TiffError, TiffFormatError, TiffResult, TiffUnsupportedError, UsageError,
-};
-
-use self::ifd::Directory;
-use self::image::Image;
-use crate::tags::{
-    CompressionMethod, PhotometricInterpretation, Predictor, SampleFormat, Tag, Type,
-};
-
-use self::stream::{ByteOrder, EndianReader, SmartReader};
-
-pub mod ifd;
-mod image;
-mod stream;
-mod tag_reader;
-
-/// Result of a decoding process
-#[derive(Debug)]
-pub enum DecodingResult {
-    /// A vector of unsigned bytes
-    U8(Vec<u8>),
-    /// A vector of unsigned words
-    U16(Vec<u16>),
-    /// A vector of 32 bit unsigned ints
-    U32(Vec<u32>),
-    /// A vector of 64 bit unsigned ints
-    U64(Vec<u64>),
-    /// A vector of 32 bit IEEE floats
-    F32(Vec<f32>),
-    /// A vector of 64 bit IEEE floats
-    F64(Vec<f64>),
-    /// A vector of 8 bit signed ints
-    I8(Vec<i8>),
-    /// A vector of 16 bit signed ints
-    I16(Vec<i16>),
-    /// A vector of 32 bit signed ints
-    I32(Vec<i32>),
-    /// A vector of 64 bit signed ints
-    I64(Vec<i64>),
-}
-
-impl DecodingResult {
-    fn new_u8(size: usize, limits: &Limits) -> TiffResult<DecodingResult> {
-        if size > limits.decoding_buffer_size {
-            Err(TiffError::LimitsExceeded)
-        } else {
-            Ok(DecodingResult::U8(vec![0; size]))
-        }
-    }
-
-    fn new_u16(size: usize, limits: &Limits) -> TiffResult<DecodingResult> {
-        if size > limits.decoding_buffer_size / 2 {
-            Err(TiffError::LimitsExceeded)
-        } else {
-            Ok(DecodingResult::U16(vec![0; size]))
-        }
-    }
-
-    fn new_u32(size: usize, limits: &Limits) -> TiffResult<DecodingResult> {
-        if size > limits.decoding_buffer_size / 4 {
-            Err(TiffError::LimitsExceeded)
-        } else {
-            Ok(DecodingResult::U32(vec![0; size]))
-        }
-    }
-
-    fn new_u64(size: usize, limits: &Limits) -> TiffResult<DecodingResult> {
-        if size > limits.decoding_buffer_size / 8 {
-            Err(TiffError::LimitsExceeded)
-        } else {
-            Ok(DecodingResult::U64(vec![0; size]))
-        }
-    }
-
-    fn new_f32(size: usize, limits: &Limits) -> TiffResult<DecodingResult> {
-        if size > limits.decoding_buffer_size / std::mem::size_of::<f32>() {
-            Err(TiffError::LimitsExceeded)
-        } else {
-            Ok(DecodingResult::F32(vec![0.0; size]))
-        }
-    }
-
-    fn new_f64(size: usize, limits: &Limits) -> TiffResult<DecodingResult> {
-        if size > limits.decoding_buffer_size / std::mem::size_of::<f64>() {
-            Err(TiffError::LimitsExceeded)
-        } else {
-            Ok(DecodingResult::F64(vec![0.0; size]))
-        }
-    }
-
-    fn new_i8(size: usize, limits: &Limits) -> TiffResult<DecodingResult> {
-        if size > limits.decoding_buffer_size / std::mem::size_of::<i8>() {
-            Err(TiffError::LimitsExceeded)
-        } else {
-            Ok(DecodingResult::I8(vec![0; size]))
-        }
-    }
-
-    fn new_i16(size: usize, limits: &Limits) -> TiffResult<DecodingResult> {
-        if size > limits.decoding_buffer_size / 2 {
-            Err(TiffError::LimitsExceeded)
-        } else {
-            Ok(DecodingResult::I16(vec![0; size]))
-        }
-    }
-
-    fn new_i32(size: usize, limits: &Limits) -> TiffResult<DecodingResult> {
-        if size > limits.decoding_buffer_size / 4 {
-            Err(TiffError::LimitsExceeded)
-        } else {
-            Ok(DecodingResult::I32(vec![0; size]))
-        }
-    }
-
-    fn new_i64(size: usize, limits: &Limits) -> TiffResult<DecodingResult> {
-        if size > limits.decoding_buffer_size / 8 {
-            Err(TiffError::LimitsExceeded)
-        } else {
-            Ok(DecodingResult::I64(vec![0; size]))
-        }
-    }
-
-    pub fn as_buffer(&mut self, start: usize) -> DecodingBuffer {
-        match *self {
-            DecodingResult::U8(ref mut buf) => DecodingBuffer::U8(&mut buf[start..]),
-            DecodingResult::U16(ref mut buf) => DecodingBuffer::U16(&mut buf[start..]),
-            DecodingResult::U32(ref mut buf) => DecodingBuffer::U32(&mut buf[start..]),
-            DecodingResult::U64(ref mut buf) => DecodingBuffer::U64(&mut buf[start..]),
-            DecodingResult::F32(ref mut buf) => DecodingBuffer::F32(&mut buf[start..]),
-            DecodingResult::F64(ref mut buf) => DecodingBuffer::F64(&mut buf[start..]),
-            DecodingResult::I8(ref mut buf) => DecodingBuffer::I8(&mut buf[start..]),
-            DecodingResult::I16(ref mut buf) => DecodingBuffer::I16(&mut buf[start..]),
-            DecodingResult::I32(ref mut buf) => DecodingBuffer::I32(&mut buf[start..]),
-            DecodingResult::I64(ref mut buf) => DecodingBuffer::I64(&mut buf[start..]),
-        }
-    }
-}
-
-// A buffer for image decoding
-pub enum DecodingBuffer<'a> {
-    /// A slice of unsigned bytes
-    U8(&'a mut [u8]),
-    /// A slice of unsigned words
-    U16(&'a mut [u16]),
-    /// A slice of 32 bit unsigned ints
-    U32(&'a mut [u32]),
-    /// A slice of 64 bit unsigned ints
-    U64(&'a mut [u64]),
-    /// A slice of 32 bit IEEE floats
-    F32(&'a mut [f32]),
-    /// A slice of 64 bit IEEE floats
-    F64(&'a mut [f64]),
-    /// A slice of 8 bits signed ints
-    I8(&'a mut [i8]),
-    /// A slice of 16 bits signed ints
-    I16(&'a mut [i16]),
-    /// A slice of 32 bits signed ints
-    I32(&'a mut [i32]),
-    /// A slice of 64 bits signed ints
-    I64(&'a mut [i64]),
-}
-
-impl<'a> DecodingBuffer<'a> {
-    fn byte_len(&self) -> usize {
-        match *self {
-            DecodingBuffer::U8(_) => 1,
-            DecodingBuffer::U16(_) => 2,
-            DecodingBuffer::U32(_) => 4,
-            DecodingBuffer::U64(_) => 8,
-            DecodingBuffer::F32(_) => 4,
-            DecodingBuffer::F64(_) => 8,
-            DecodingBuffer::I8(_) => 1,
-            DecodingBuffer::I16(_) => 2,
-            DecodingBuffer::I32(_) => 4,
-            DecodingBuffer::I64(_) => 8,
-        }
-    }
-
-    fn copy<'b>(&'b mut self) -> DecodingBuffer<'b>
-    where
-        'a: 'b,
-    {
-        match *self {
-            DecodingBuffer::U8(ref mut buf) => DecodingBuffer::U8(buf),
-            DecodingBuffer::U16(ref mut buf) => DecodingBuffer::U16(buf),
-            DecodingBuffer::U32(ref mut buf) => DecodingBuffer::U32(buf),
-            DecodingBuffer::U64(ref mut buf) => DecodingBuffer::U64(buf),
-            DecodingBuffer::F32(ref mut buf) => DecodingBuffer::F32(buf),
-            DecodingBuffer::F64(ref mut buf) => DecodingBuffer::F64(buf),
-            DecodingBuffer::I8(ref mut buf) => DecodingBuffer::I8(buf),
-            DecodingBuffer::I16(ref mut buf) => DecodingBuffer::I16(buf),
-            DecodingBuffer::I32(ref mut buf) => DecodingBuffer::I32(buf),
-            DecodingBuffer::I64(ref mut buf) => DecodingBuffer::I64(buf),
-        }
-    }
-
-    fn subrange<'b>(&'b mut self, range: Range<usize>) -> DecodingBuffer<'b>
-    where
-        'a: 'b,
-    {
-        match *self {
-            DecodingBuffer::U8(ref mut buf) => DecodingBuffer::U8(&mut buf[range]),
-            DecodingBuffer::U16(ref mut buf) => DecodingBuffer::U16(&mut buf[range]),
-            DecodingBuffer::U32(ref mut buf) => DecodingBuffer::U32(&mut buf[range]),
-            DecodingBuffer::U64(ref mut buf) => DecodingBuffer::U64(&mut buf[range]),
-            DecodingBuffer::F32(ref mut buf) => DecodingBuffer::F32(&mut buf[range]),
-            DecodingBuffer::F64(ref mut buf) => DecodingBuffer::F64(&mut buf[range]),
-            DecodingBuffer::I8(ref mut buf) => DecodingBuffer::I8(&mut buf[range]),
-            DecodingBuffer::I16(ref mut buf) => DecodingBuffer::I16(&mut buf[range]),
-            DecodingBuffer::I32(ref mut buf) => DecodingBuffer::I32(&mut buf[range]),
-            DecodingBuffer::I64(ref mut buf) => DecodingBuffer::I64(&mut buf[range]),
-        }
-    }
-
-    fn as_bytes_mut(&mut self) -> &mut [u8] {
-        match self {
-            DecodingBuffer::U8(buf) => &mut *buf,
-            DecodingBuffer::I8(buf) => bytecast::i8_as_ne_mut_bytes(buf),
-            DecodingBuffer::U16(buf) => bytecast::u16_as_ne_mut_bytes(buf),
-            DecodingBuffer::I16(buf) => bytecast::i16_as_ne_mut_bytes(buf),
-            DecodingBuffer::U32(buf) => bytecast::u32_as_ne_mut_bytes(buf),
-            DecodingBuffer::I32(buf) => bytecast::i32_as_ne_mut_bytes(buf),
-            DecodingBuffer::U64(buf) => bytecast::u64_as_ne_mut_bytes(buf),
-            DecodingBuffer::I64(buf) => bytecast::i64_as_ne_mut_bytes(buf),
-            DecodingBuffer::F32(buf) => bytecast::f32_as_ne_mut_bytes(buf),
-            DecodingBuffer::F64(buf) => bytecast::f64_as_ne_mut_bytes(buf),
-        }
-    }
-}
-
-#[derive(Debug, Copy, Clone, PartialEq)]
-/// Chunk type of the internal representation
-pub enum ChunkType {
-    Strip,
-    Tile,
-}
-
-/// Decoding limits
-#[derive(Clone, Debug)]
-pub struct Limits {
-    /// The maximum size of any `DecodingResult` in bytes, the default is
-    /// 256MiB. If the entire image is decoded at once, then this will
-    /// be the maximum size of the image. If it is decoded one strip at a
-    /// time, this will be the maximum size of a strip.
-    pub decoding_buffer_size: usize,
-    /// The maximum size of any ifd value in bytes, the default is
-    /// 1MiB.
-    pub ifd_value_size: usize,
-    /// Maximum size for intermediate buffer which may be used to limit the amount of data read per
-    /// segment even if the entire image is decoded at once.
-    pub intermediate_buffer_size: usize,
-    /// The purpose of this is to prevent all the fields of the struct from
-    /// being public, as this would make adding new fields a major version
-    /// bump.
-    _non_exhaustive: (),
-}
-
-impl Limits {
-    /// A configuration that does not impose any limits.
-    ///
-    /// This is a good start if the caller only wants to impose selective limits, contrary to the
-    /// default limits which allows selectively disabling limits.
-    ///
-    /// Note that this configuration is likely to crash on excessively large images since,
-    /// naturally, the machine running the program does not have infinite memory.
-    pub fn unlimited() -> Limits {
-        Limits {
-            decoding_buffer_size: usize::max_value(),
-            ifd_value_size: usize::max_value(),
-            intermediate_buffer_size: usize::max_value(),
-            _non_exhaustive: (),
-        }
-    }
-}
-
-impl Default for Limits {
-    fn default() -> Limits {
-        Limits {
-            decoding_buffer_size: 256 * 1024 * 1024,
-            intermediate_buffer_size: 128 * 1024 * 1024,
-            ifd_value_size: 1024 * 1024,
-            _non_exhaustive: (),
-        }
-    }
-}
-
-/// The representation of a TIFF decoder
-///
-/// Currently does not support decoding of interlaced images
-#[derive(Debug)]
-pub struct Decoder<R>
-where
-    R: Read + Seek,
-{
-    reader: SmartReader<R>,
-    bigtiff: bool,
-    limits: Limits,
-    next_ifd: Option<u64>,
-    ifd_offsets: Vec<u64>,
-    seen_ifds: HashSet<u64>,
-    image: Image,
-}
-
-trait Wrapping {
-    fn wrapping_add(&self, other: Self) -> Self;
-}
-
-impl Wrapping for u8 {
-    fn wrapping_add(&self, other: Self) -> Self {
-        u8::wrapping_add(*self, other)
-    }
-}
-
-impl Wrapping for u16 {
-    fn wrapping_add(&self, other: Self) -> Self {
-        u16::wrapping_add(*self, other)
-    }
-}
-
-impl Wrapping for u32 {
-    fn wrapping_add(&self, other: Self) -> Self {
-        u32::wrapping_add(*self, other)
-    }
-}
-
-impl Wrapping for u64 {
-    fn wrapping_add(&self, other: Self) -> Self {
-        u64::wrapping_add(*self, other)
-    }
-}
-
-impl Wrapping for i8 {
-    fn wrapping_add(&self, other: Self) -> Self {
-        i8::wrapping_add(*self, other)
-    }
-}
-
-impl Wrapping for i16 {
-    fn wrapping_add(&self, other: Self) -> Self {
-        i16::wrapping_add(*self, other)
-    }
-}
-
-impl Wrapping for i32 {
-    fn wrapping_add(&self, other: Self) -> Self {
-        i32::wrapping_add(*self, other)
-    }
-}
-
-impl Wrapping for i64 {
-    fn wrapping_add(&self, other: Self) -> Self {
-        i64::wrapping_add(*self, other)
-    }
-}
-
-fn rev_hpredict_nsamp<T: Copy + Wrapping>(image: &mut [T], samples: usize) {
-    for col in samples..image.len() {
-        image[col] = image[col].wrapping_add(image[col - samples]);
-    }
-}
-
-pub fn fp_predict_f32(input: &mut [u8], output: &mut [f32], samples: usize) {
-    rev_hpredict_nsamp(input, samples);
-    for i in 0..output.len() {
-        // TODO: use f32::from_be_bytes() when we can (version 1.40)
-        output[i] = f32::from_bits(u32::from_be_bytes([
-            input[input.len() / 4 * 0 + i],
-            input[input.len() / 4 * 1 + i],
-            input[input.len() / 4 * 2 + i],
-            input[input.len() / 4 * 3 + i],
-        ]));
-    }
-}
-
-pub fn fp_predict_f64(input: &mut [u8], output: &mut [f64], samples: usize) {
-    rev_hpredict_nsamp(input, samples);
-    for i in 0..output.len() {
-        // TODO: use f64::from_be_bytes() when we can (version 1.40)
-        output[i] = f64::from_bits(u64::from_be_bytes([
-            input[input.len() / 8 * 0 + i],
-            input[input.len() / 8 * 1 + i],
-            input[input.len() / 8 * 2 + i],
-            input[input.len() / 8 * 3 + i],
-            input[input.len() / 8 * 4 + i],
-            input[input.len() / 8 * 5 + i],
-            input[input.len() / 8 * 6 + i],
-            input[input.len() / 8 * 7 + i],
-        ]));
-    }
-}
-
-fn fix_endianness_and_predict(
-    mut image: DecodingBuffer,
-    samples: usize,
-    byte_order: ByteOrder,
-    predictor: Predictor,
-) {
-    match predictor {
-        Predictor::None => {
-            fix_endianness(&mut image, byte_order);
-        }
-        Predictor::Horizontal => {
-            fix_endianness(&mut image, byte_order);
-            match image {
-                DecodingBuffer::U8(buf) => rev_hpredict_nsamp(buf, samples),
-                DecodingBuffer::U16(buf) => rev_hpredict_nsamp(buf, samples),
-                DecodingBuffer::U32(buf) => rev_hpredict_nsamp(buf, samples),
-                DecodingBuffer::U64(buf) => rev_hpredict_nsamp(buf, samples),
-                DecodingBuffer::I8(buf) => rev_hpredict_nsamp(buf, samples),
-                DecodingBuffer::I16(buf) => rev_hpredict_nsamp(buf, samples),
-                DecodingBuffer::I32(buf) => rev_hpredict_nsamp(buf, samples),
-                DecodingBuffer::I64(buf) => rev_hpredict_nsamp(buf, samples),
-                DecodingBuffer::F32(_) | DecodingBuffer::F64(_) => {
-                    unreachable!("Caller should have validated arguments. Please file a bug.")
-                }
-            }
-        }
-        Predictor::FloatingPoint => {
-            let mut buffer_copy = image.as_bytes_mut().to_vec();
-            match image {
-                DecodingBuffer::F32(buf) => fp_predict_f32(&mut buffer_copy, buf, samples),
-                DecodingBuffer::F64(buf) => fp_predict_f64(&mut buffer_copy, buf, samples),
-                _ => unreachable!("Caller should have validated arguments. Please file a bug."),
-            }
-        }
-    }
-}
-
-fn invert_colors_unsigned<T>(buffer: &mut [T], max: T)
-where
-    T: std::ops::Sub<T> + std::ops::Sub<Output = T> + Copy,
-{
-    for datum in buffer.iter_mut() {
-        *datum = max - *datum
-    }
-}
-
-fn invert_colors_fp<T>(buffer: &mut [T], max: T)
-where
-    T: std::ops::Sub<T> + std::ops::Sub<Output = T> + Copy,
-{
-    for datum in buffer.iter_mut() {
-        // FIXME: assumes [0, 1) range for floats
-        *datum = max - *datum
-    }
-}
-
-fn invert_colors(buf: &mut DecodingBuffer, color_type: ColorType) {
-    match (color_type, buf) {
-        (ColorType::Gray(64), DecodingBuffer::U64(ref mut buffer)) => {
-            invert_colors_unsigned(buffer, 0xffff_ffff_ffff_ffff);
-        }
-        (ColorType::Gray(32), DecodingBuffer::U32(ref mut buffer)) => {
-            invert_colors_unsigned(buffer, 0xffff_ffff);
-        }
-        (ColorType::Gray(16), DecodingBuffer::U16(ref mut buffer)) => {
-            invert_colors_unsigned(buffer, 0xffff);
-        }
-        (ColorType::Gray(n), DecodingBuffer::U8(ref mut buffer)) if n <= 8 => {
-            invert_colors_unsigned(buffer, 0xff);
-        }
-        (ColorType::Gray(32), DecodingBuffer::F32(ref mut buffer)) => {
-            invert_colors_fp(buffer, 1.0);
-        }
-        (ColorType::Gray(64), DecodingBuffer::F64(ref mut buffer)) => {
-            invert_colors_fp(buffer, 1.0);
-        }
-        _ => {}
-    }
-}
-
-/// Fix endianness. If `byte_order` matches the host, then conversion is a no-op.
-fn fix_endianness(buf: &mut DecodingBuffer, byte_order: ByteOrder) {
-    match byte_order {
-        ByteOrder::LittleEndian => match buf {
-            DecodingBuffer::U8(_) | DecodingBuffer::I8(_) => {}
-            DecodingBuffer::U16(b) => b.iter_mut().for_each(|v| *v = u16::from_le(*v)),
-            DecodingBuffer::I16(b) => b.iter_mut().for_each(|v| *v = i16::from_le(*v)),
-            DecodingBuffer::U32(b) => b.iter_mut().for_each(|v| *v = u32::from_le(*v)),
-            DecodingBuffer::I32(b) => b.iter_mut().for_each(|v| *v = i32::from_le(*v)),
-            DecodingBuffer::U64(b) => b.iter_mut().for_each(|v| *v = u64::from_le(*v)),
-            DecodingBuffer::I64(b) => b.iter_mut().for_each(|v| *v = i64::from_le(*v)),
-            DecodingBuffer::F32(b) => b
-                .iter_mut()
-                .for_each(|v| *v = f32::from_bits(u32::from_le(v.to_bits()))),
-            DecodingBuffer::F64(b) => b
-                .iter_mut()
-                .for_each(|v| *v = f64::from_bits(u64::from_le(v.to_bits()))),
-        },
-        ByteOrder::BigEndian => match buf {
-            DecodingBuffer::U8(_) | DecodingBuffer::I8(_) => {}
-            DecodingBuffer::U16(b) => b.iter_mut().for_each(|v| *v = u16::from_be(*v)),
-            DecodingBuffer::I16(b) => b.iter_mut().for_each(|v| *v = i16::from_be(*v)),
-            DecodingBuffer::U32(b) => b.iter_mut().for_each(|v| *v = u32::from_be(*v)),
-            DecodingBuffer::I32(b) => b.iter_mut().for_each(|v| *v = i32::from_be(*v)),
-            DecodingBuffer::U64(b) => b.iter_mut().for_each(|v| *v = u64::from_be(*v)),
-            DecodingBuffer::I64(b) => b.iter_mut().for_each(|v| *v = i64::from_be(*v)),
-            DecodingBuffer::F32(b) => b
-                .iter_mut()
-                .for_each(|v| *v = f32::from_bits(u32::from_be(v.to_bits()))),
-            DecodingBuffer::F64(b) => b
-                .iter_mut()
-                .for_each(|v| *v = f64::from_bits(u64::from_be(v.to_bits()))),
-        },
-    };
-}
-
-impl<R: Read + Seek> Decoder<R> {
-    /// Create a new decoder that decodes from the stream ```r```
-    pub fn new(mut r: R) -> TiffResult<Decoder<R>> {
-        let mut endianess = Vec::with_capacity(2);
-        (&mut r).take(2).read_to_end(&mut endianess)?;
-        let byte_order = match &*endianess {
-            b"II" => ByteOrder::LittleEndian,
-            b"MM" => ByteOrder::BigEndian,
-            _ => {
-                return Err(TiffError::FormatError(
-                    TiffFormatError::TiffSignatureNotFound,
-                ))
-            }
-        };
-        let mut reader = SmartReader::wrap(r, byte_order);
-
-        let bigtiff = match reader.read_u16()? {
-            42 => false,
-            43 => {
-                // Read bytesize of offsets (in bigtiff it's alway 8 but provide a way to move to 16 some day)
-                if reader.read_u16()? != 8 {
-                    return Err(TiffError::FormatError(
-                        TiffFormatError::TiffSignatureNotFound,
-                    ));
-                }
-                // This constant should always be 0
-                if reader.read_u16()? != 0 {
-                    return Err(TiffError::FormatError(
-                        TiffFormatError::TiffSignatureNotFound,
-                    ));
-                }
-                true
-            }
-            _ => {
-                return Err(TiffError::FormatError(
-                    TiffFormatError::TiffSignatureInvalid,
-                ))
-            }
-        };
-        let next_ifd = if bigtiff {
-            Some(reader.read_u64()?)
-        } else {
-            Some(u64::from(reader.read_u32()?))
-        };
-
-        let mut seen_ifds = HashSet::new();
-        seen_ifds.insert(*next_ifd.as_ref().unwrap());
-        let ifd_offsets = vec![*next_ifd.as_ref().unwrap()];
-
-        let mut decoder = Decoder {
-            reader,
-            bigtiff,
-            limits: Default::default(),
-            next_ifd,
-            ifd_offsets,
-            seen_ifds,
-            image: Image {
-                ifd: None,
-                width: 0,
-                height: 0,
-                bits_per_sample: vec![1],
-                samples: 1,
-                sample_format: vec![SampleFormat::Uint],
-                photometric_interpretation: PhotometricInterpretation::BlackIsZero,
-                compression_method: CompressionMethod::None,
-                jpeg_tables: None,
-                predictor: Predictor::None,
-                chunk_type: ChunkType::Strip,
-                strip_decoder: None,
-                tile_attributes: None,
-                chunk_offsets: Vec::new(),
-                chunk_bytes: Vec::new(),
-            },
-        };
-        decoder.next_image()?;
-        Ok(decoder)
-    }
-
-    pub fn with_limits(mut self, limits: Limits) -> Decoder<R> {
-        self.limits = limits;
-        self
-    }
-
-    pub fn dimensions(&mut self) -> TiffResult<(u32, u32)> {
-        Ok((self.image().width, self.image().height))
-    }
-
-    pub fn colortype(&mut self) -> TiffResult<ColorType> {
-        self.image().colortype()
-    }
-
-    fn image(&self) -> &Image {
-        &self.image
-    }
-
-    /// Loads the IFD at the specified index in the list, if one exists
-    pub fn seek_to_image(&mut self, ifd_index: usize) -> TiffResult<()> {
-        // Check whether we have seen this IFD before, if so then the index will be less than the length of the list of ifd offsets
-        if ifd_index >= self.ifd_offsets.len() {
-            // We possibly need to load in the next IFD
-            if self.next_ifd.is_none() {
-                return Err(TiffError::FormatError(
-                    TiffFormatError::ImageFileDirectoryNotFound,
-                ));
-            }
-
-            loop {
-                // Follow the list until we find the one we want, or we reach the end, whichever happens first
-                let (_ifd, next_ifd) = self.next_ifd()?;
-
-                if next_ifd.is_none() {
-                    break;
-                }
-
-                if ifd_index < self.ifd_offsets.len() {
-                    break;
-                }
-            }
-        }
-
-        // If the index is within the list of ifds then we can load the selected image/IFD
-        if let Some(ifd_offset) = self.ifd_offsets.get(ifd_index) {
-            let (ifd, _next_ifd) = Self::read_ifd(&mut self.reader, self.bigtiff, *ifd_offset)?;
-
-            self.image = Image::from_reader(&mut self.reader, ifd, &self.limits, self.bigtiff)?;
-
-            Ok(())
-        } else {
-            Err(TiffError::FormatError(
-                TiffFormatError::ImageFileDirectoryNotFound,
-            ))
-        }
-    }
-
-    fn next_ifd(&mut self) -> TiffResult<(Directory, Option<u64>)> {
-        if self.next_ifd.is_none() {
-            return Err(TiffError::FormatError(
-                TiffFormatError::ImageFileDirectoryNotFound,
-            ));
-        }
-
-        let (ifd, next_ifd) = Self::read_ifd(
-            &mut self.reader,
-            self.bigtiff,
-            self.next_ifd.take().unwrap(),
-        )?;
-
-        if let Some(next) = next_ifd {
-            if !self.seen_ifds.insert(next) {
-                return Err(TiffError::FormatError(TiffFormatError::CycleInOffsets));
-            }
-            self.next_ifd = Some(next);
-            self.ifd_offsets.push(next);
-        }
-
-        Ok((ifd, next_ifd))
-    }
-
-    /// Reads in the next image.
-    /// If there is no further image in the TIFF file a format error is returned.
-    /// To determine whether there are more images call `TIFFDecoder::more_images` instead.
-    pub fn next_image(&mut self) -> TiffResult<()> {
-        let (ifd, _next_ifd) = self.next_ifd()?;
-
-        self.image = Image::from_reader(&mut self.reader, ifd, &self.limits, self.bigtiff)?;
-        Ok(())
-    }
-
-    /// Returns `true` if there is at least one more image available.
-    pub fn more_images(&self) -> bool {
-        self.next_ifd.is_some()
-    }
-
-    /// Returns the byte_order
-    pub fn byte_order(&self) -> ByteOrder {
-        self.reader.byte_order
-    }
-
-    #[inline]
-    pub fn read_ifd_offset(&mut self) -> Result<u64, io::Error> {
-        if self.bigtiff {
-            self.read_long8()
-        } else {
-            self.read_long().map(u64::from)
-        }
-    }
-
-    /// Reads a TIFF byte value
-    #[inline]
-    pub fn read_byte(&mut self) -> Result<u8, io::Error> {
-        let mut buf = [0; 1];
-        self.reader.read_exact(&mut buf)?;
-        Ok(buf[0])
-    }
-
-    /// Reads a TIFF short value
-    #[inline]
-    pub fn read_short(&mut self) -> Result<u16, io::Error> {
-        self.reader.read_u16()
-    }
-
-    /// Reads a TIFF sshort value
-    #[inline]
-    pub fn read_sshort(&mut self) -> Result<i16, io::Error> {
-        self.reader.read_i16()
-    }
-
-    /// Reads a TIFF long value
-    #[inline]
-    pub fn read_long(&mut self) -> Result<u32, io::Error> {
-        self.reader.read_u32()
-    }
-
-    /// Reads a TIFF slong value
-    #[inline]
-    pub fn read_slong(&mut self) -> Result<i32, io::Error> {
-        self.reader.read_i32()
-    }
-
-    /// Reads a TIFF float value
-    #[inline]
-    pub fn read_float(&mut self) -> Result<f32, io::Error> {
-        self.reader.read_f32()
-    }
-
-    /// Reads a TIFF double value
-    #[inline]
-    pub fn read_double(&mut self) -> Result<f64, io::Error> {
-        self.reader.read_f64()
-    }
-
-    #[inline]
-    pub fn read_long8(&mut self) -> Result<u64, io::Error> {
-        self.reader.read_u64()
-    }
-
-    #[inline]
-    pub fn read_slong8(&mut self) -> Result<i64, io::Error> {
-        self.reader.read_i64()
-    }
-
-    /// Reads a string
-    #[inline]
-    pub fn read_string(&mut self, length: usize) -> TiffResult<String> {
-        let mut out = vec![0; length];
-        self.reader.read_exact(&mut out)?;
-        // Strings may be null-terminated, so we trim anything downstream of the null byte
-        if let Some(first) = out.iter().position(|&b| b == 0) {
-            out.truncate(first);
-        }
-        Ok(String::from_utf8(out)?)
-    }
-
-    /// Reads a TIFF IFA offset/value field
-    #[inline]
-    pub fn read_offset(&mut self) -> TiffResult<[u8; 4]> {
-        if self.bigtiff {
-            return Err(TiffError::FormatError(
-                TiffFormatError::InconsistentSizesEncountered,
-            ));
-        }
-        let mut val = [0; 4];
-        self.reader.read_exact(&mut val)?;
-        Ok(val)
-    }
-
-    /// Reads a TIFF IFA offset/value field
-    #[inline]
-    pub fn read_offset_u64(&mut self) -> Result<[u8; 8], io::Error> {
-        let mut val = [0; 8];
-        self.reader.read_exact(&mut val)?;
-        Ok(val)
-    }
-
-    /// Moves the cursor to the specified offset
-    #[inline]
-    pub fn goto_offset(&mut self, offset: u32) -> io::Result<()> {
-        self.goto_offset_u64(offset.into())
-    }
-
-    #[inline]
-    pub fn goto_offset_u64(&mut self, offset: u64) -> io::Result<()> {
-        self.reader.seek(io::SeekFrom::Start(offset)).map(|_| ())
-    }
-
-    /// Reads a IFD entry.
-    // An IFD entry has four fields:
-    //
-    // Tag   2 bytes
-    // Type  2 bytes
-    // Count 4 bytes
-    // Value 4 bytes either a pointer the value itself
-    fn read_entry(
-        reader: &mut SmartReader<R>,
-        bigtiff: bool,
-    ) -> TiffResult<Option<(Tag, ifd::Entry)>> {
-        let tag = Tag::from_u16_exhaustive(reader.read_u16()?);
-        let type_ = match Type::from_u16(reader.read_u16()?) {
-            Some(t) => t,
-            None => {
-                // Unknown type. Skip this entry according to spec.
-                reader.read_u32()?;
-                reader.read_u32()?;
-                return Ok(None);
-            }
-        };
-        let entry = if bigtiff {
-            let mut offset = [0; 8];
-
-            let count = reader.read_u64()?;
-            reader.read_exact(&mut offset)?;
-            ifd::Entry::new_u64(type_, count, offset)
-        } else {
-            let mut offset = [0; 4];
-
-            let count = reader.read_u32()?;
-            reader.read_exact(&mut offset)?;
-            ifd::Entry::new(type_, count, offset)
-        };
-        Ok(Some((tag, entry)))
-    }
-
-    /// Reads the IFD starting at the indicated location.
-    fn read_ifd(
-        reader: &mut SmartReader<R>,
-        bigtiff: bool,
-        ifd_location: u64,
-    ) -> TiffResult<(Directory, Option<u64>)> {
-        reader.goto_offset(ifd_location)?;
-
-        let mut dir: Directory = HashMap::new();
-
-        let num_tags = if bigtiff {
-            reader.read_u64()?
-        } else {
-            reader.read_u16()?.into()
-        };
-        for _ in 0..num_tags {
-            let (tag, entry) = match Self::read_entry(reader, bigtiff)? {
-                Some(val) => val,
-                None => {
-                    continue;
-                } // Unknown data type in tag, skip
-            };
-            dir.insert(tag, entry);
-        }
-
-        let next_ifd = if bigtiff {
-            reader.read_u64()?
-        } else {
-            reader.read_u32()?.into()
-        };
-
-        let next_ifd = match next_ifd {
-            0 => None,
-            _ => Some(next_ifd),
-        };
-
-        Ok((dir, next_ifd))
-    }
-
-    /// Tries to retrieve a tag.
-    /// Return `Ok(None)` if the tag is not present.
-    pub fn find_tag(&mut self, tag: Tag) -> TiffResult<Option<ifd::Value>> {
-        let entry = match self.image().ifd.as_ref().unwrap().get(&tag) {
-            None => return Ok(None),
-            Some(entry) => entry.clone(),
-        };
-
-        Ok(Some(entry.val(
-            &self.limits,
-            self.bigtiff,
-            &mut self.reader,
-        )?))
-    }
-
-    /// Tries to retrieve a tag and convert it to the desired unsigned type.
-    pub fn find_tag_unsigned<T: TryFrom<u64>>(&mut self, tag: Tag) -> TiffResult<Option<T>> {
-        self.find_tag(tag)?
-            .map(|v| v.into_u64())
-            .transpose()?
-            .map(|value| {
-                T::try_from(value).map_err(|_| TiffFormatError::InvalidTagValueType(tag).into())
-            })
-            .transpose()
-    }
-
-    /// Tries to retrieve a vector of all a tag's values and convert them to
-    /// the desired unsigned type.
-    pub fn find_tag_unsigned_vec<T: TryFrom<u64>>(
-        &mut self,
-        tag: Tag,
-    ) -> TiffResult<Option<Vec<T>>> {
-        self.find_tag(tag)?
-            .map(|v| v.into_u64_vec())
-            .transpose()?
-            .map(|v| {
-                v.into_iter()
-                    .map(|u| {
-                        T::try_from(u).map_err(|_| TiffFormatError::InvalidTagValueType(tag).into())
-                    })
-                    .collect()
-            })
-            .transpose()
-    }
-
-    /// Tries to retrieve a tag and convert it to the desired unsigned type.
-    /// Returns an error if the tag is not present.
-    pub fn get_tag_unsigned<T: TryFrom<u64>>(&mut self, tag: Tag) -> TiffResult<T> {
-        self.find_tag_unsigned(tag)?
-            .ok_or_else(|| TiffFormatError::RequiredTagNotFound(tag).into())
-    }
-
-    /// Tries to retrieve a tag.
-    /// Returns an error if the tag is not present
-    pub fn get_tag(&mut self, tag: Tag) -> TiffResult<ifd::Value> {
-        match self.find_tag(tag)? {
-            Some(val) => Ok(val),
-            None => Err(TiffError::FormatError(
-                TiffFormatError::RequiredTagNotFound(tag),
-            )),
-        }
-    }
-
-    /// Tries to retrieve a tag and convert it to the desired type.
-    pub fn get_tag_u32(&mut self, tag: Tag) -> TiffResult<u32> {
-        self.get_tag(tag)?.into_u32()
-    }
-    pub fn get_tag_u64(&mut self, tag: Tag) -> TiffResult<u64> {
-        self.get_tag(tag)?.into_u64()
-    }
-
-    /// Tries to retrieve a tag and convert it to the desired type.
-    pub fn get_tag_f32(&mut self, tag: Tag) -> TiffResult<f32> {
-        self.get_tag(tag)?.into_f32()
-    }
-
-    /// Tries to retrieve a tag and convert it to the desired type.
-    pub fn get_tag_f64(&mut self, tag: Tag) -> TiffResult<f64> {
-        self.get_tag(tag)?.into_f64()
-    }
-
-    /// Tries to retrieve a tag and convert it to the desired type.
-    pub fn get_tag_u32_vec(&mut self, tag: Tag) -> TiffResult<Vec<u32>> {
-        self.get_tag(tag)?.into_u32_vec()
-    }
-
-    pub fn get_tag_u16_vec(&mut self, tag: Tag) -> TiffResult<Vec<u16>> {
-        self.get_tag(tag)?.into_u16_vec()
-    }
-    pub fn get_tag_u64_vec(&mut self, tag: Tag) -> TiffResult<Vec<u64>> {
-        self.get_tag(tag)?.into_u64_vec()
-    }
-
-    /// Tries to retrieve a tag and convert it to the desired type.
-    pub fn get_tag_f32_vec(&mut self, tag: Tag) -> TiffResult<Vec<f32>> {
-        self.get_tag(tag)?.into_f32_vec()
-    }
-
-    /// Tries to retrieve a tag and convert it to the desired type.
-    pub fn get_tag_f64_vec(&mut self, tag: Tag) -> TiffResult<Vec<f64>> {
-        self.get_tag(tag)?.into_f64_vec()
-    }
-
-    /// Tries to retrieve a tag and convert it to a 8bit vector.
-    pub fn get_tag_u8_vec(&mut self, tag: Tag) -> TiffResult<Vec<u8>> {
-        self.get_tag(tag)?.into_u8_vec()
-    }
-
-    /// Tries to retrieve a tag and convert it to a ascii vector.
-    pub fn get_tag_ascii_string(&mut self, tag: Tag) -> TiffResult<String> {
-        self.get_tag(tag)?.into_string()
-    }
-
-    fn check_chunk_type(&self, expected: ChunkType) -> TiffResult<()> {
-        if expected != self.image().chunk_type {
-            return Err(TiffError::UsageError(UsageError::InvalidChunkType(
-                expected,
-                self.image().chunk_type,
-            )));
-        }
-
-        Ok(())
-    }
-
-    /// The chunk type (Strips / Tiles) of the image
-    pub fn get_chunk_type(&self) -> ChunkType {
-        self.image().chunk_type
-    }
-
-    /// Number of strips in image
-    pub fn strip_count(&mut self) -> TiffResult<u32> {
-        self.check_chunk_type(ChunkType::Strip)?;
-        let rows_per_strip = self.image().strip_decoder.as_ref().unwrap().rows_per_strip;
-
-        if rows_per_strip == 0 {
-            return Ok(0);
-        }
-
-        // rows_per_strip - 1 can never fail since we know it's at least 1
-        let height = match self.image().height.checked_add(rows_per_strip - 1) {
-            Some(h) => h,
-            None => return Err(TiffError::IntSizeError),
-        };
-
-        Ok(height / rows_per_strip)
-    }
-
-    /// Number of tiles in image
-    pub fn tile_count(&mut self) -> TiffResult<u32> {
-        self.check_chunk_type(ChunkType::Tile)?;
-        Ok(u32::try_from(self.image().chunk_offsets.len())?)
-    }
-
-    pub fn read_chunk_to_buffer(
-        &mut self,
-        mut buffer: DecodingBuffer,
-        chunk_index: u32,
-        output_width: usize,
-    ) -> TiffResult<()> {
-        let offset = self.image.chunk_file_range(chunk_index)?.0;
-        self.goto_offset_u64(offset)?;
-
-        let byte_order = self.reader.byte_order;
-
-        self.image.expand_chunk(
-            &mut self.reader,
-            buffer.copy(),
-            output_width,
-            byte_order,
-            chunk_index,
-        )?;
-
-        Ok(())
-    }
-
-    fn result_buffer(&self, width: usize, height: usize) -> TiffResult<DecodingResult> {
-        let buffer_size = match width
-            .checked_mul(height)
-            .and_then(|x| x.checked_mul(self.image().bits_per_sample.len()))
-        {
-            Some(s) => s,
-            None => return Err(TiffError::LimitsExceeded),
-        };
-
-        let max_sample_bits = self
-            .image()
-            .bits_per_sample
-            .iter()
-            .cloned()
-            .max()
-            .unwrap_or(8);
-        match self
-            .image()
-            .sample_format
-            .first()
-            .unwrap_or(&SampleFormat::Uint)
-        {
-            SampleFormat::Uint => match max_sample_bits {
-                n if n <= 8 => DecodingResult::new_u8(buffer_size, &self.limits),
-                n if n <= 16 => DecodingResult::new_u16(buffer_size, &self.limits),
-                n if n <= 32 => DecodingResult::new_u32(buffer_size, &self.limits),
-                n if n <= 64 => DecodingResult::new_u64(buffer_size, &self.limits),
-                n => Err(TiffError::UnsupportedError(
-                    TiffUnsupportedError::UnsupportedBitsPerChannel(n),
-                )),
-            },
-            SampleFormat::IEEEFP => match max_sample_bits {
-                32 => DecodingResult::new_f32(buffer_size, &self.limits),
-                64 => DecodingResult::new_f64(buffer_size, &self.limits),
-                n => Err(TiffError::UnsupportedError(
-                    TiffUnsupportedError::UnsupportedBitsPerChannel(n),
-                )),
-            },
-            SampleFormat::Int => match max_sample_bits {
-                n if n <= 8 => DecodingResult::new_i8(buffer_size, &self.limits),
-                n if n <= 16 => DecodingResult::new_i16(buffer_size, &self.limits),
-                n if n <= 32 => DecodingResult::new_i32(buffer_size, &self.limits),
-                n if n <= 64 => DecodingResult::new_i64(buffer_size, &self.limits),
-                n => Err(TiffError::UnsupportedError(
-                    TiffUnsupportedError::UnsupportedBitsPerChannel(n),
-                )),
-            },
-            format => {
-                Err(TiffUnsupportedError::UnsupportedSampleFormat(vec![format.clone()]).into())
-            }
-        }
-    }
-
-    /// Read the specified chunk (at index `chunk_index`) and return the binary data as a Vector.
-    pub fn read_chunk(&mut self, chunk_index: u32) -> TiffResult<DecodingResult> {
-        let data_dims = self.image().chunk_data_dimensions(chunk_index)?;
-
-        let mut result = self.result_buffer(data_dims.0 as usize, data_dims.1 as usize)?;
-
-        self.read_chunk_to_buffer(result.as_buffer(0), chunk_index, data_dims.0 as usize)?;
-
-        Ok(result)
-    }
-
-    /// Returns the default chunk size for the current image. Any given chunk in the image is at most as large as
-    /// the value returned here. For the size of the data (chunk minus padding), use `chunk_data_dimensions`.
-    pub fn chunk_dimensions(&self) -> (u32, u32) {
-        self.image().chunk_dimensions().unwrap()
-    }
-
-    /// Returns the size of the data in the chunk with the specified index. This is the default size of the chunk,
-    /// minus any padding.
-    pub fn chunk_data_dimensions(&self, chunk_index: u32) -> (u32, u32) {
-        self.image()
-            .chunk_data_dimensions(chunk_index)
-            .expect("invalid chunk_index")
-    }
-
-    /// Decodes the entire image and return it as a Vector
-    pub fn read_image(&mut self) -> TiffResult<DecodingResult> {
-        let width = self.image().width;
-        let height = self.image().height;
-        let mut result = self.result_buffer(width as usize, height as usize)?;
-        if width == 0 || height == 0 {
-            return Ok(result);
-        }
-
-        let chunk_dimensions = self.image().chunk_dimensions()?;
-        let chunk_dimensions = (
-            chunk_dimensions.0.min(width),
-            chunk_dimensions.1.min(height),
-        );
-        if chunk_dimensions.0 == 0 || chunk_dimensions.1 == 0 {
-            return Err(TiffError::FormatError(
-                TiffFormatError::InconsistentSizesEncountered,
-            ));
-        }
-
-        let samples = self.image().bits_per_sample.len();
-        if samples == 0 {
-            return Err(TiffError::FormatError(
-                TiffFormatError::InconsistentSizesEncountered,
-            ));
-        }
-
-        let chunks_across = ((width - 1) / chunk_dimensions.0 + 1) as usize;
-        let strip_samples = width as usize * chunk_dimensions.1 as usize * samples;
-
-        for chunk in 0..self.image().chunk_offsets.len() {
-            self.goto_offset_u64(self.image().chunk_offsets[chunk])?;
-
-            let x = chunk % chunks_across;
-            let y = chunk / chunks_across;
-            let buffer_offset = y * strip_samples + x * chunk_dimensions.0 as usize * samples;
-            let byte_order = self.reader.byte_order;
-            self.image.expand_chunk(
-                &mut self.reader,
-                result.as_buffer(buffer_offset).copy(),
-                width as usize,
-                byte_order,
-                chunk as u32,
-            )?;
-        }
-
-        Ok(result)
-    }
-}