Deleted vendor folder

1 files changed, 0 insertions, 685 deletions

diff --git a/vendor/jpeg-decoder/src/parser.rs b/vendor/jpeg-decoder/src/parser.rs
deleted file mode 100644
index 72ba00d..0000000
--- a/vendor/jpeg-decoder/src/parser.rs
+++ /dev/null
@@ -1,685 +0,0 @@
-use alloc::borrow::ToOwned;
-use alloc::{format, vec};
-use alloc::vec::Vec;
-use core::ops::{self, Range};
-use std::io::{self, Read};
-use crate::{read_u16_from_be, read_u8};
-use crate::error::{Error, Result, UnsupportedFeature};
-use crate::huffman::{HuffmanTable, HuffmanTableClass};
-use crate::marker::Marker;
-use crate::marker::Marker::*;
-
-#[derive(Clone, Copy, Debug, PartialEq)]
-pub struct Dimensions {
-    pub width: u16,
-    pub height: u16,
-}
-
-#[derive(Clone, Copy, Debug, PartialEq)]
-pub enum EntropyCoding {
-    Huffman,
-    Arithmetic,
-}
-
-/// Represents the coding process of an image.
-#[derive(Clone, Copy, Debug, PartialEq)]
-pub enum CodingProcess {
-    /// Sequential Discrete Cosine Transform
-    DctSequential,
-    /// Progressive Discrete Cosine Transform
-    DctProgressive,
-    /// Lossless
-    Lossless,
-}
-
-// Table H.1
-#[derive(Clone, Copy, Debug, PartialEq)]
-pub enum Predictor {
-    NoPrediction,
-    Ra,
-    Rb,
-    Rc,
-    RaRbRc1, // Ra + Rb - Rc
-    RaRbRc2, // Ra + ((Rb - Rc) >> 1)
-    RaRbRc3, // Rb + ((Ra - Rb) >> 1)
-    RaRb,    // (Ra + Rb)/2
-}
-
-
-#[derive(Clone)]
-pub struct FrameInfo {
-    pub is_baseline: bool,
-    pub is_differential: bool,
-    pub coding_process: CodingProcess,
-    pub entropy_coding: EntropyCoding,
-    pub precision: u8,
-
-    pub image_size: Dimensions,
-    pub output_size: Dimensions,
-    pub mcu_size: Dimensions,
-    pub components: Vec<Component>,
-}
-
-#[derive(Debug)]
-pub struct ScanInfo {
-    pub component_indices: Vec<usize>,
-    pub dc_table_indices: Vec<usize>,
-    pub ac_table_indices: Vec<usize>,
-
-    pub spectral_selection: Range<u8>,
-    pub predictor_selection: Predictor, // for lossless
-    pub successive_approximation_high: u8,
-    pub successive_approximation_low: u8,
-    pub point_transform: u8, // for lossless
-}
-
-#[derive(Clone, Debug)]
-pub struct Component {
-    pub identifier: u8,
-
-    pub horizontal_sampling_factor: u8,
-    pub vertical_sampling_factor: u8,
-
-    pub quantization_table_index: usize,
-
-    pub dct_scale: usize,
-
-    pub size: Dimensions,
-    pub block_size: Dimensions,
-}
-
-#[derive(Debug)]
-pub enum AppData {
-    Adobe(AdobeColorTransform),
-    Jfif,
-    Avi1,
-    Icc(IccChunk),
-    Exif(Vec<u8>),
-}
-
-// http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/JPEG.html#Adobe
-#[derive(Clone, Copy, Debug, PartialEq)]
-pub enum AdobeColorTransform {
-    // RGB or CMYK
-    Unknown,
-    YCbCr,
-    // YCbCrK
-    YCCK,
-}
-#[derive(Debug)]
-pub struct IccChunk {
-    pub num_markers: u8,
-    pub seq_no: u8,
-    pub data: Vec<u8>,
-}
-
-impl FrameInfo {
-    pub(crate) fn update_idct_size(&mut self, idct_size: usize) -> Result<()> {
-        for component in &mut self.components {
-            component.dct_scale = idct_size;
-        }
-
-        update_component_sizes(self.image_size, &mut self.components)?;
-
-        self.output_size = Dimensions {
-            width: (self.image_size.width as f32 * idct_size as f32 / 8.0).ceil() as u16,
-            height: (self.image_size.height as f32 * idct_size as f32 / 8.0).ceil() as u16
-        };
-
-        Ok(())
-    }
-}
-
-fn read_length<R: Read>(reader: &mut R, marker: Marker) -> Result<usize> {
-    assert!(marker.has_length());
-
-    // length is including itself.
-    let length = usize::from(read_u16_from_be(reader)?);
-
-    if length < 2 {
-        return Err(Error::Format(format!("encountered {:?} with invalid length {}", marker, length)));
-    }
-
-    Ok(length - 2)
-}
-
-fn skip_bytes<R: Read>(reader: &mut R, length: usize) -> Result<()> {
-    let length = length as u64;
-    let to_skip = &mut reader.by_ref().take(length);
-    let copied = io::copy(to_skip, &mut io::sink())?;
-    if copied < length {
-        Err(Error::Io(io::ErrorKind::UnexpectedEof.into()))
-    } else {
-        Ok(())
-    }
-}
-
-// Section B.2.2
-pub fn parse_sof<R: Read>(reader: &mut R, marker: Marker) -> Result<FrameInfo> {
-    let length = read_length(reader, marker)?;
-
-    if length <= 6 {
-        return Err(Error::Format("invalid length in SOF".to_owned()));
-    }
-
-    let is_baseline = marker == SOF(0);
-    let is_differential = match marker {
-        SOF(0 ..= 3) | SOF(9 ..= 11)  => false,
-        SOF(5 ..= 7) | SOF(13 ..= 15) => true,
-        _ => panic!(),
-    };
-    let coding_process = match marker {
-        SOF(0) | SOF(1) | SOF(5) | SOF(9) | SOF(13) => CodingProcess::DctSequential,
-        SOF(2) | SOF(6) | SOF(10) | SOF(14)         => CodingProcess::DctProgressive,
-        SOF(3) | SOF(7) | SOF(11) | SOF(15)         => CodingProcess::Lossless,
-        _ => panic!(),
-    };
-    let entropy_coding = match marker {
-        SOF(0 ..= 3) | SOF(5 ..= 7)     => EntropyCoding::Huffman,
-        SOF(9 ..= 11) | SOF(13 ..= 15)  => EntropyCoding::Arithmetic,
-        _ => panic!(),
-    };
-
-    let precision = read_u8(reader)?;
-
-    match precision {
-        8 => {},
-        12 => {
-            if is_baseline {
-                return Err(Error::Format("12 bit sample precision is not allowed in baseline".to_owned()));
-            }
-        },
-        _ => {
-            if coding_process != CodingProcess::Lossless || precision > 16 {
-                return Err(Error::Format(format!("invalid precision {} in frame header", precision)))
-            }
-        },
-    }
-
-    let height = read_u16_from_be(reader)?;
-    let width = read_u16_from_be(reader)?;
-
-    // height:
-    // "Value 0 indicates that the number of lines shall be defined by the DNL marker and
-    //     parameters at the end of the first scan (see B.2.5)."
-    if height == 0 {
-        return Err(Error::Unsupported(UnsupportedFeature::DNL));
-    }
-
-    if width == 0 {
-        return Err(Error::Format("zero width in frame header".to_owned()));
-    }
-
-    let component_count = read_u8(reader)?;
-
-    if component_count == 0 {
-        return Err(Error::Format("zero component count in frame header".to_owned()));
-    }
-    if coding_process == CodingProcess::DctProgressive && component_count > 4 {
-        return Err(Error::Format("progressive frame with more than 4 components".to_owned()));
-    }
-
-    if length != 6 + 3 * component_count as usize {
-        return Err(Error::Format("invalid length in SOF".to_owned()));
-    }
-
-    let mut components: Vec<Component> = Vec::with_capacity(component_count as usize);
-
-    for _ in 0 .. component_count {
-        let identifier = read_u8(reader)?;
-
-        // Each component's identifier must be unique.
-        if components.iter().any(|c| c.identifier == identifier) {
-            return Err(Error::Format(format!("duplicate frame component identifier {}", identifier)));
-        }
-
-        let byte = read_u8(reader)?;
-        let horizontal_sampling_factor = byte >> 4;
-        let vertical_sampling_factor = byte & 0x0f;
-
-        if horizontal_sampling_factor == 0 || horizontal_sampling_factor > 4 {
-            return Err(Error::Format(format!("invalid horizontal sampling factor {}", horizontal_sampling_factor)));
-        }
-        if vertical_sampling_factor == 0 || vertical_sampling_factor > 4 {
-            return Err(Error::Format(format!("invalid vertical sampling factor {}", vertical_sampling_factor)));
-        }
-
-        let quantization_table_index = read_u8(reader)?;
-
-        if quantization_table_index > 3 || (coding_process == CodingProcess::Lossless && quantization_table_index != 0) {
-            return Err(Error::Format(format!("invalid quantization table index {}", quantization_table_index)));
-        }
-
-        components.push(Component {
-            identifier,
-            horizontal_sampling_factor,
-            vertical_sampling_factor,
-            quantization_table_index: quantization_table_index as usize,
-            dct_scale: 8,
-            size: Dimensions {width: 0, height: 0},
-            block_size: Dimensions {width: 0, height: 0},
-        });
-    }
-
-    let mcu_size = update_component_sizes(Dimensions { width, height }, &mut components)?;
-
-    Ok(FrameInfo {
-        is_baseline,
-        is_differential,
-        coding_process,
-        entropy_coding,
-        precision,
-        image_size: Dimensions { width, height },
-        output_size: Dimensions { width, height },
-        mcu_size,
-        components,
-    })
-}
-
-/// Returns ceil(x/y), requires x>0
-fn ceil_div(x: u32, y: u32) -> Result<u16> {
-    if x == 0 || y == 0 {
-        // TODO Determine how this error is reached. Can we validate input
-        // earlier and error out then?
-        return Err(Error::Format("invalid dimensions".to_owned()));
-    }
-    Ok((1 + ((x - 1) / y)) as u16)
-}
-
-fn update_component_sizes(size: Dimensions, components: &mut [Component]) -> Result<Dimensions> {
-    let h_max = components.iter().map(|c| c.horizontal_sampling_factor).max().unwrap() as u32;
-    let v_max = components.iter().map(|c| c.vertical_sampling_factor).max().unwrap() as u32;
-
-    let mcu_size = Dimensions {
-        width: ceil_div(size.width as u32, h_max * 8)?,
-        height: ceil_div(size.height as u32, v_max * 8)?,
-    };
-
-    for component in components {
-        component.size.width = ceil_div(size.width as u32 * component.horizontal_sampling_factor as u32 * component.dct_scale as u32, h_max * 8)?;
-        component.size.height = ceil_div(size.height as u32 * component.vertical_sampling_factor as u32 * component.dct_scale as u32, v_max * 8)?;
-
-        component.block_size.width = mcu_size.width * component.horizontal_sampling_factor as u16;
-        component.block_size.height = mcu_size.height * component.vertical_sampling_factor as u16;
-    }
-
-    Ok(mcu_size)
-}
-
-#[test]
-fn test_update_component_sizes() {
-    let mut components = [Component {
-        identifier: 1,
-        horizontal_sampling_factor: 2,
-        vertical_sampling_factor: 2,
-        quantization_table_index: 0,
-        dct_scale: 8,
-        size: Dimensions { width: 0, height: 0 },
-        block_size: Dimensions { width: 0, height: 0 },
-    }];
-    let mcu = update_component_sizes(
-        Dimensions { width: 800, height: 280 },
-        &mut components).unwrap();
-    assert_eq!(mcu, Dimensions { width: 50, height: 18 });
-    assert_eq!(components[0].block_size, Dimensions { width: 100, height: 36 });
-    assert_eq!(components[0].size, Dimensions { width: 800, height: 280 });
-}
-
-// Section B.2.3
-pub fn parse_sos<R: Read>(reader: &mut R, frame: &FrameInfo) -> Result<ScanInfo> {
-    let length = read_length(reader, SOS)?;
-    if 0 == length {
-        return Err(Error::Format("zero length in SOS".to_owned()));
-    }
-
-    let component_count = read_u8(reader)?;
-
-    if component_count == 0 || component_count > 4 {
-        return Err(Error::Format(format!("invalid component count {} in scan header", component_count)));
-    }
-
-    if length != 4 + 2 * component_count as usize {
-        return Err(Error::Format("invalid length in SOS".to_owned()));
-    }
-
-    let mut component_indices = Vec::with_capacity(component_count as usize);
-    let mut dc_table_indices = Vec::with_capacity(component_count as usize);
-    let mut ac_table_indices = Vec::with_capacity(component_count as usize);
-
-    for _ in 0 .. component_count {
-        let identifier = read_u8(reader)?;
-
-        let component_index = match frame.components.iter().position(|c| c.identifier == identifier) {
-            Some(value) => value,
-            None => return Err(Error::Format(format!("scan component identifier {} does not match any of the component identifiers defined in the frame", identifier))),
-        };
-
-        // Each of the scan's components must be unique.
-        if component_indices.contains(&component_index) {
-            return Err(Error::Format(format!("duplicate scan component identifier {}", identifier)));
-        }
-
-        // "... the ordering in the scan header shall follow the ordering in the frame header."
-        if component_index < *component_indices.iter().max().unwrap_or(&0) {
-            return Err(Error::Format("the scan component order does not follow the order in the frame header".to_owned()));
-        }
-
-        let byte = read_u8(reader)?;
-        let dc_table_index = byte >> 4;
-        let ac_table_index = byte & 0x0f;
-
-        if dc_table_index > 3 || (frame.is_baseline && dc_table_index > 1) {
-            return Err(Error::Format(format!("invalid dc table index {}", dc_table_index)));
-        }
-        if ac_table_index > 3 || (frame.is_baseline && ac_table_index > 1) {
-            return Err(Error::Format(format!("invalid ac table index {}", ac_table_index)));
-        }
-
-        component_indices.push(component_index);
-        dc_table_indices.push(dc_table_index as usize);
-        ac_table_indices.push(ac_table_index as usize);
-    }
-
-    let blocks_per_mcu = component_indices.iter().map(|&i| {
-        frame.components[i].horizontal_sampling_factor as u32 * frame.components[i].vertical_sampling_factor as u32
-    }).fold(0, ops::Add::add);
-
-    if component_count > 1 && blocks_per_mcu > 10 {
-        return Err(Error::Format("scan with more than one component and more than 10 blocks per MCU".to_owned()));
-    }
-
-    // Also utilized as 'Predictor' in lossless coding, as MEAN in JPEG-LS etc.
-    let spectral_selection_start = read_u8(reader)?;
-    // Also utilized as ILV parameter in JPEG-LS.
-    let mut spectral_selection_end = read_u8(reader)?;
-
-    let byte = read_u8(reader)?;
-    let successive_approximation_high = byte >> 4;
-    let successive_approximation_low = byte & 0x0f;
-
-    // The Differential Pulse-Mode prediction used (similar to png). Only utilized in Lossless
-    // coding. Don't confuse with the JPEG-LS parameter coded using the same scan info portion.
-    let predictor_selection;
-    let point_transform = successive_approximation_low;
-
-    if frame.coding_process == CodingProcess::DctProgressive {
-        predictor_selection = Predictor::NoPrediction;
-        if spectral_selection_end > 63 || spectral_selection_start > spectral_selection_end ||
-                (spectral_selection_start == 0 && spectral_selection_end != 0) {
-            return Err(Error::Format(format!("invalid spectral selection parameters: ss={}, se={}", spectral_selection_start, spectral_selection_end)));
-        }
-        if spectral_selection_start != 0 && component_count != 1 {
-            return Err(Error::Format("spectral selection scan with AC coefficients can't have more than one component".to_owned()));
-        }
-
-        if successive_approximation_high > 13 || successive_approximation_low > 13 {
-            return Err(Error::Format(format!("invalid successive approximation parameters: ah={}, al={}", successive_approximation_high, successive_approximation_low)));
-        }
-
-        // Section G.1.1.1.2
-        // "Each scan which follows the first scan for a given band progressively improves
-        //     the precision of the coefficients by one bit, until full precision is reached."
-        if successive_approximation_high != 0 && successive_approximation_high != successive_approximation_low + 1 {
-            return Err(Error::Format("successive approximation scan with more than one bit of improvement".to_owned()));
-        }
-    }
-    else if frame.coding_process == CodingProcess::Lossless {
-        if spectral_selection_end != 0 {
-            return Err(Error::Format("spectral selection end shall be zero in lossless scan".to_owned()));
-        }
-        if successive_approximation_high != 0 {
-            return Err(Error::Format("successive approximation high shall be zero in lossless scan".to_owned()));
-        }
-        predictor_selection = match spectral_selection_start {
-            0 => Predictor::NoPrediction,
-            1 => Predictor::Ra,
-            2 => Predictor::Rb,
-            3 => Predictor::Rc,
-            4 => Predictor::RaRbRc1,
-            5 => Predictor::RaRbRc2,
-            6 => Predictor::RaRbRc3,
-            7 => Predictor::RaRb,
-            _ => {
-                return Err(Error::Format(format!("invalid predictor selection value: {}", spectral_selection_start)));
-            },
-        };
-    }
-    else {
-        predictor_selection = Predictor::NoPrediction;
-        if spectral_selection_end == 0 {
-            spectral_selection_end = 63;
-        }
-        if spectral_selection_start != 0 || spectral_selection_end != 63 {
-            return Err(Error::Format("spectral selection is not allowed in non-progressive scan".to_owned()));
-        }
-        if successive_approximation_high != 0 || successive_approximation_low != 0 {
-            return Err(Error::Format("successive approximation is not allowed in non-progressive scan".to_owned()));
-        }
-    }
-
-    Ok(ScanInfo {
-        component_indices,
-        dc_table_indices,
-        ac_table_indices,
-        spectral_selection: Range {
-            start: spectral_selection_start,
-            end: spectral_selection_end + 1,
-        },
-        predictor_selection,
-        successive_approximation_high,
-        successive_approximation_low,
-        point_transform,
-    })
-}
-
-// Section B.2.4.1
-pub fn parse_dqt<R: Read>(reader: &mut R) -> Result<[Option<[u16; 64]>; 4]> {
-    let mut length = read_length(reader, DQT)?;
-    let mut tables = [None; 4];
-
-    // Each DQT segment may contain multiple quantization tables.
-    while length > 0 {
-        let byte = read_u8(reader)?;
-        let precision = (byte >> 4) as usize;
-        let index = (byte & 0x0f) as usize;
-
-        // The combination of 8-bit sample precision and 16-bit quantization tables is explicitly
-        // disallowed by the JPEG spec:
-        //     "An 8-bit DCT-based process shall not use a 16-bit precision quantization table."
-        //     "Pq: Quantization table element precision – Specifies the precision of the Qk
-        //      values. Value 0 indicates 8-bit Qk values; value 1 indicates 16-bit Qk values. Pq
-        //      shall be zero for 8 bit sample precision P (see B.2.2)."
-        // libjpeg allows this behavior though, and there are images in the wild using it. So to
-        // match libjpeg's behavior we are deviating from the JPEG spec here.
-        if precision > 1 {
-            return Err(Error::Format(format!("invalid precision {} in DQT", precision)));
-        }
-        if index > 3 {
-            return Err(Error::Format(format!("invalid destination identifier {} in DQT", index)));
-        }
-        if length < 65 + 64 * precision {
-            return Err(Error::Format("invalid length in DQT".to_owned()));
-        }
-
-        let mut table = [0u16; 64];
-
-        for item in table.iter_mut() {
-            *item = match precision {
-                0 => u16::from(read_u8(reader)?),
-                1 => read_u16_from_be(reader)?,
-                _ => unreachable!(),
-            };
-        }
-
-        if table.iter().any(|&val| val == 0) {
-            return Err(Error::Format("quantization table contains element with a zero value".to_owned()));
-        }
-
-        tables[index] = Some(table);
-        length -= 65 + 64 * precision;
-    }
-
-    Ok(tables)
-}
-
-// Section B.2.4.2
-pub fn parse_dht<R: Read>(reader: &mut R, is_baseline: Option<bool>) -> Result<(Vec<Option<HuffmanTable>>, Vec<Option<HuffmanTable>>)> {
-    let mut length = read_length(reader, DHT)?;
-    let mut dc_tables = vec![None, None, None, None];
-    let mut ac_tables = vec![None, None, None, None];
-
-    // Each DHT segment may contain multiple huffman tables.
-    while length > 17 {
-        let byte = read_u8(reader)?;
-        let class = byte >> 4;
-        let index = (byte & 0x0f) as usize;
-
-        if class != 0 && class != 1 {
-            return Err(Error::Format(format!("invalid class {} in DHT", class)));
-        }
-        if is_baseline == Some(true) && index > 1 {
-            return Err(Error::Format("a maximum of two huffman tables per class are allowed in baseline".to_owned()));
-        }
-        if index > 3 {
-            return Err(Error::Format(format!("invalid destination identifier {} in DHT", index)));
-        }
-
-        let mut counts = [0u8; 16];
-        reader.read_exact(&mut counts)?;
-
-        let size = counts.iter().map(|&val| val as usize).fold(0, ops::Add::add);
-
-        if size == 0 {
-            return Err(Error::Format("encountered table with zero length in DHT".to_owned()));
-        }
-        else if size > 256 {
-            return Err(Error::Format("encountered table with excessive length in DHT".to_owned()));
-        }
-        else if size > length - 17 {
-            return Err(Error::Format("invalid length in DHT".to_owned()));
-        }
-
-        let mut values = vec![0u8; size];
-        reader.read_exact(&mut values)?;
-
-        match class {
-            0 => dc_tables[index] = Some(HuffmanTable::new(&counts, &values, HuffmanTableClass::DC)?),
-            1 => ac_tables[index] = Some(HuffmanTable::new(&counts, &values, HuffmanTableClass::AC)?),
-            _ => unreachable!(),
-        }
-
-        length -= 17 + size;
-    }
-
-    if length != 0 {
-        return Err(Error::Format("invalid length in DHT".to_owned()));
-    }
-
-    Ok((dc_tables, ac_tables))
-}
-
-// Section B.2.4.4
-pub fn parse_dri<R: Read>(reader: &mut R) -> Result<u16> {
-    let length = read_length(reader, DRI)?;
-
-    if length != 2 {
-        return Err(Error::Format("DRI with invalid length".to_owned()));
-    }
-
-    Ok(read_u16_from_be(reader)?)
-}
-
-// Section B.2.4.5
-pub fn parse_com<R: Read>(reader: &mut R) -> Result<Vec<u8>> {
-    let length = read_length(reader, COM)?;
-    let mut buffer = vec![0u8; length];
-
-    reader.read_exact(&mut buffer)?;
-
-    Ok(buffer)
-}
-
-// Section B.2.4.6
-pub fn parse_app<R: Read>(reader: &mut R, marker: Marker) -> Result<Option<AppData>> {
-    let length = read_length(reader, marker)?;
-    let mut bytes_read = 0;
-    let mut result = None;
-
-    match marker {
-        APP(0) => {
-            if length >= 5 {
-                let mut buffer = [0u8; 5];
-                reader.read_exact(&mut buffer)?;
-                bytes_read = buffer.len();
-
-                // http://www.w3.org/Graphics/JPEG/jfif3.pdf
-                if buffer[0..5] == *b"JFIF\0" {
-                    result = Some(AppData::Jfif);
-                // https://sno.phy.queensu.ca/~phil/exiftool/TagNames/JPEG.html#AVI1
-                } else if buffer[0..5] == *b"AVI1\0" {
-                    result = Some(AppData::Avi1);
-                }
-            }
-        }
-        // Exif Data
-        APP(1) => {
-            if length >= 6 {
-                let mut buffer = [0u8; 6];
-                reader.read_exact(&mut buffer)?;
-                bytes_read = buffer.len();
-
-                // https://web.archive.org/web/20190624045241if_/http://www.cipa.jp:80/std/documents/e/DC-008-Translation-2019-E.pdf
-                // 4.5.4 Basic Structure of JPEG Compressed Data
-                if buffer == *b"Exif\x00\x00" {
-                    let mut data = vec![0; length - bytes_read];
-                    reader.read_exact(&mut data)?;
-                    bytes_read += data.len();
-                    result = Some(AppData::Exif(data));
-                }
-            }
-        }
-        APP(2) => {
-            if length > 14 {
-                let mut buffer = [0u8; 14];
-                reader.read_exact(&mut buffer)?;
-                bytes_read = buffer.len();
-
-                // http://www.color.org/ICC_Minor_Revision_for_Web.pdf
-                // B.4 Embedding ICC profiles in JFIF files
-                if buffer[0..12] == *b"ICC_PROFILE\0" {
-                    let mut data = vec![0; length - bytes_read];
-                    reader.read_exact(&mut data)?;
-                    bytes_read += data.len();
-                    result = Some(AppData::Icc(IccChunk {
-                        seq_no: buffer[12],
-                        num_markers: buffer[13],
-                        data,
-                    }));
-                }
-            }
-        }
-        APP(14) => {
-            if length >= 12 {
-                let mut buffer = [0u8; 12];
-                reader.read_exact(&mut buffer)?;
-                bytes_read = buffer.len();
-
-                // http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/JPEG.html#Adobe
-                if buffer[0 .. 6] == *b"Adobe\0" {
-                    let color_transform = match buffer[11] {
-                        0 => AdobeColorTransform::Unknown,
-                        1 => AdobeColorTransform::YCbCr,
-                        2 => AdobeColorTransform::YCCK,
-                        _ => return Err(Error::Format("invalid color transform in adobe app segment".to_owned())),
-                    };
-
-                    result = Some(AppData::Adobe(color_transform));
-                }
-            }
-        },
-        _ => {},
-    }
-
-    skip_bytes(reader, length - bytes_read)?;
-    Ok(result)
-}