197 lines
8.3 KiB
Markdown
197 lines
8.3 KiB
Markdown
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# Version 0.9.0
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New features:
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* Added support for photometric interpretation `YCbCr` and added related
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`ColorType`.
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Fixes:
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* Decoding tiled images calculates padding correctly when image width or height
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is a multiple of tile size. It could previously corrupt the last tile per row
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by skipping over data.
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# Version 0.8.1
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Changes:
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* The jpeg decoder gained to ability to utilize the Photometric Interpretation
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directly instead of relying on a custom APP segment.
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Fixes:
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* A spurious error within the PackBits decoder lead to the incorrect results
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(wrong bits or errors), based on the maximum size of reads from the
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underlying reader.
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* Removed a panic path in jpeg decoding, when a feature such as photometric
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interpretation is not supported. An error is returned instead.
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# Version 0.8.0
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Changes:
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* The minimum supported rust version is now indicated in `Cargo.toml`.
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* The enums `TiffFormatError` and `TiffUnsupportedError` are now
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marked with the `#[non_exhaustive]` attribute.
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* Additionally, tag related enums `Value`, `Tags`, `Type`, `CompressionMethod`,
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`PhotometricInterpretation`, `PlanarConfiguration`, `Predictor`,
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`ResolutionUnit`, `SampleFormat` are also changed.
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Removals:
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* Removed deprecated methods of `Decoder`: `init`, `read_jpeg`,
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`read_strip_to_buffer`, `read_strip`, `read_tile`. The implicit chunk (row or
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tile) index order could not be easily tracked by the caller. New separate
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utility interfaces may be introduced at a later point, for now callers are
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obligated to choose their own.
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Fixes:
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* Update to `jpeg_decoder = 0.3`.
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# Version 0.7.4
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New features:
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* Creating an encoder for invalid, zero-sized images is now rejected.
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Fixes:
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* Fix panic, in a case where decoding jpeg encoded images did not expect the
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jpeg decoder to return an error.
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* Fix panic by validating `rows_per_strip` better, fixing a division-by-zero.
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# Version 0.7.3
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New features:
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* Allow decoder to access specific tiles by index.
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* Add support for floating point predictor.
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* Tiled jpeg file support.
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Changes:
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* Various refactoring and performance improvements.
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# Version 0.7.2
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New features:
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* Encoding with `ImageEncoder` now takes an optional compressor argument,
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allowing compressed encoding. See the methods
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`TiffEncoder::{new_image,write_image}_with_compression`.
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* `jpeg_decoder` has been upgraded, now supports lossless JPEG.
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Changes:
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* Decoding now more consistently reads and interprets the initial IFD, instead
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of performing _some_ interpretation lazily. (This change prepares fully lazy
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and backwards seeking.)
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# Version 0.7.1
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New features:
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* Encoding signed integer formats is now supported.
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* Extensive fuzzing with `cargo fuzz`.
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Changes:
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* Tile decoding should be a little faster, requires one less intermediate buffer.
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* Images whose IFDs form a cycle due to their offsets will now raise an error
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when the cycle would be entered (jumping back should still be supported).
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Fixes:
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* Fixed a regression that caused conflict between strips and tile images,
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causing errors in decoding some images.
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* Use checked integer arithmetic in limit calculations, fixes overflows.
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* IFD Tags are now always cleared between images.
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* Found by fuzzing: Several memory limit overflows; JPEG now correctly
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validates offsets and a minimum size of its table; Check upper limit of strip
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byte size correctly;
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Notes:
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Our CI has warned that this version no longer builds on `1.34.2` out of the
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box. We're still committed to the MSRV on this major version yet one
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dependency—`flate2`—has already bumped it in a SemVer compatible version of its
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own. This is out-of-our-control (cargo's dependency resolution does not allow
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us to address this in a reasonable manner).
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This can be address this by pinning the version of `flate2` to `1.0.21` in your
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own files. However, you should understand that this puts you in considerable
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maintenance debt as you will no longer receive any updates for this dependency
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and any package that _requires_ a new version of the `1.0` series would be
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incompatible with this requirement (cargo might yell at you very loudly).
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# Version 0.7.0
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New features:
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* Support for encoding BigTiff ([#122](https://github.com/image-rs/image-tiff/pull/122))
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* _Breaking:_ Encoder types now have a generic parameter to differentiate BigTiff and standard Tiff encoding. Defaults to standard Tiff.
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* Basic tile decoding ([#125](https://github.com/image-rs/image-tiff/pull/125))
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* _Breaking:_ There is a new `TiffError::UsageError` variant.
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* Support for datatypes `Int8` and `Int16` ([#114](https://github.com/image-rs/image-tiff/pull/114))
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* _Breaking:_ `DecodingResult` and `DecodingBuffer` have the two new variants `I8` and `I16`.
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* Support for `i32` arrays ([#118](https://github.com/image-rs/image-tiff/pull/118/files))
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* _Breaking:_ `DecodingResult` and `DecodingBuffer` have a new `I32` variant.
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* Support for `Ifd` and `IfdBig` tag types and `I64` data type ([#119](https://github.com/image-rs/image-tiff/pull/119))
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* _Breaking:_ `DecodingResult` and `DecodingBuffer` have a new `I64` variant.
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* Add `SMinSampleValue` and `SMaxSampleValue` ([#123](https://github.com/image-rs/image-tiff/pull/123))
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Changes:
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* Improve deflate support ([#132](https://github.com/image-rs/image-tiff/pull/132))
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* Switch to streaming decompression via `flate2`. Aside from performance improvements and lower RAM consumption, this fixes a bug where `max_uncompressed_length` was precalculated for a single tile but then used as a hard limit on the whole data, failing to decompress any tiled images.
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* Add support for new `Deflate` tag in addition to `OldDeflate`.
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* _Breaking:_ Remove `InflateError`, which is no longer needed with `flate2` ([#134](https://github.com/image-rs/image-tiff/pull/134))
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* _Breaking:_ Support for `MinIsWhite` is restricted to unsigned and floating
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point values. This is expected to be be re-added once some contradictory
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interpretation regarding semantics for signed values is resolved.
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Fixes:
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* Validate that ASCII tags are valid ASCII and end with a null byte ([#121](https://github.com/image-rs/image-tiff/pull/121))
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Internal:
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* Simplify decompression logic ([#126](https://github.com/image-rs/image-tiff/pull/126))
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* Simplify `expand_strip` ([#128](https://github.com/image-rs/image-tiff/pull/128))
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# Version 0.6.1
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New features:
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* Support for reading `u16` and ascii string tags.
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* Added `Limits::unlimited` for disabling all limits.
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* Added `ImageEncoder::rows_per_strip` to overwrite the default.
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Changes:
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* The default strip size for chunked encoding is now 1MB, up from 8KB. This
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should lead to more efficient decoding and compression.
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Fixes:
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* Fixed a bug where LZW compressed strips could not be decoded, instead
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returning an error `Inconsistent sizes encountered`.
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* Reading a tag with a complex type and a single value returns the proper Value
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variant, instead of a vector with one entry.
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# Version 0.6.0
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New features:
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* Support for decoding BigTIFF with 64-bit offsets
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* The value types byte, `f32`, `f64` are now recognized
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* Support for Modern JPEG encoded images
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Improvements:
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* Better support for adding auxiliary tags before encoding image data
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* Switched to lzw decoder library `weezl` for performance
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* The `ColorType` trait now supports `SAMPLE_ENCODING` hints
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Fixes:
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* Fixed decoding of inline ASCII in tags
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* Fixed handling after null terminator in ASCII data
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* Recognize tile and sample format tags
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# Version 0.5.0
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* Added support for 32-bit and 64-bit decoded values.
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* Added CMYK(16|32|64) color type support.
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* Check many internal integer conversions to increase stability. This should
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only lead to images being reported as faulty that would previously silently
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break platform limits. If there are any false positives, please report them.
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* Remove an erroneous check of decoded length in lzw compressed images.
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# Version 0.4.0
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* Several enumerations are now non_exhaustive for future extensions.
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These are `Tag`, `Type`, `Value`, `PhotometricInterpretation`,
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`CompressionMethod`, `Predictor`.
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* Enums gained a dedicated method to convert to their TIFF variant value with
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the specified type. Performing these conversions by casting the discriminant
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with `as` is not guaranteed to be stable, except where documented explicitly.
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* Removed the num-derive and num dependencies.
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* Added support for decoding `deflate` compressed images.
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* Make the decoder `Limits` customizable by exposing members.
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* Fixed multi-page TIFF encoding writing incorrect offsets.
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