aboutsummaryrefslogtreecommitdiff
path: root/vendor/jpeg-decoder/src/error.rs
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/jpeg-decoder/src/error.rs')
-rw-r--r--vendor/jpeg-decoder/src/error.rs75
1 files changed, 0 insertions, 75 deletions
diff --git a/vendor/jpeg-decoder/src/error.rs b/vendor/jpeg-decoder/src/error.rs
deleted file mode 100644
index c5fe7b6..0000000
--- a/vendor/jpeg-decoder/src/error.rs
+++ /dev/null
@@ -1,75 +0,0 @@
-use alloc::boxed::Box;
-use alloc::fmt;
-use alloc::string::String;
-use core::result;
-use std::error::Error as StdError;
-use std::io::Error as IoError;
-
-use crate::ColorTransform;
-
-pub type Result<T> = result::Result<T, Error>;
-
-/// An enumeration over JPEG features (currently) unsupported by this library.
-///
-/// Support for features listed here may be included in future versions of this library.
-#[derive(Debug, Clone, PartialEq, Eq, Hash)]
-pub enum UnsupportedFeature {
- /// Hierarchical JPEG.
- Hierarchical,
- /// JPEG using arithmetic entropy coding instead of Huffman coding.
- ArithmeticEntropyCoding,
- /// Sample precision in bits. 8 bit sample precision is what is currently supported in non-lossless coding process.
- SamplePrecision(u8),
- /// Number of components in an image. 1, 3 and 4 components are currently supported.
- ComponentCount(u8),
- /// An image can specify a zero height in the frame header and use the DNL (Define Number of
- /// Lines) marker at the end of the first scan to define the number of lines in the frame.
- DNL,
- /// Subsampling ratio.
- SubsamplingRatio,
- /// A subsampling ratio not representable as an integer.
- NonIntegerSubsamplingRatio,
- /// Colour transform
- ColorTransform(ColorTransform),
-}
-
-/// Errors that can occur while decoding a JPEG image.
-#[derive(Debug)]
-pub enum Error {
- /// The image is not formatted properly. The string contains detailed information about the
- /// error.
- Format(String),
- /// The image makes use of a JPEG feature not (currently) supported by this library.
- Unsupported(UnsupportedFeature),
- /// An I/O error occurred while decoding the image.
- Io(IoError),
- /// An internal error occurred while decoding the image.
- Internal(Box<dyn StdError + Send + Sync + 'static>), //TODO: not used, can be removed with the next version bump
-}
-
-impl fmt::Display for Error {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match *self {
- Error::Format(ref desc) => write!(f, "invalid JPEG format: {}", desc),
- Error::Unsupported(ref feat) => write!(f, "unsupported JPEG feature: {:?}", feat),
- Error::Io(ref err) => err.fmt(f),
- Error::Internal(ref err) => err.fmt(f),
- }
- }
-}
-
-impl StdError for Error {
- fn source(&self) -> Option<&(dyn StdError + 'static)> {
- match *self {
- Error::Io(ref err) => Some(err),
- Error::Internal(ref err) => Some(&**err),
- _ => None,
- }
- }
-}
-
-impl From<IoError> for Error {
- fn from(err: IoError) -> Error {
- Error::Io(err)
- }
-}