Lilith River
a4cbf7bbaf
Expand gen_seq_tiff.c with writers for standard-depth formats that exercise different decoder code paths. All 55 seq-* images are 16x16, libtiff-generated, and cross-validated against tifffile. New coverage: - Compression: LZW, Deflate, PackBits (gray 8/16-bit, RGB 8-bit) - LZW + horizontal predictor (8-bit gray) - Tiled layout: gray 8/16-bit, RGB 8-bit (16x16 tiles) - BigTIFF: gray 8-bit, RGB 16-bit - Float: gray f32/f64, RGB f32 - Signed integer: i8, i16, i32 - CMYK: 8-bit, 16-bit - Palette/indexed: 4-bit, 8-bit (with known colormap) - RGBA with associated alpha: 8-bit, 16-bit - Multi-page: 3-page gray 8-bit (all pages verified) - Big-endian byte order: gray 8/16-bit, RGB 8-bit Total: 298 tests, all passing.
image-tiff
TIFF decoding and encoding library in pure Rust
Supported
Features
- Baseline spec (other than formats and tags listed below as not supported)
- Multipage
- BigTIFF
- Incremental decoding
Formats
This table lists photometric interpretations and sample formats which are supported for encoding and decoding. The entries are ColorType variants for which sample bit depths are supported. Only samples where all bit depths are equal are currently supported. For example, RGB(8) means that the bit depth [8, 8, 8] is supported and will be interpreted as an 8 bit per channel RGB color type.
PhotometricInterpretation |
UINT Format | IEEEFP Format |
|---|---|---|
WhiteIsZero |
Gray(8|16|32|64) | Gray(32|64) |
BlackIsZero |
Gray(8|16|32|64) | Gray(32|64) |
RGB |
RGB(8|16|32|64), RGBA(8|16|32|64) | RGB(32|64), RGBA(32|64) |
RGBPalette |
||
Mask |
||
CMYK |
CMYK(8|16|32|64) | CMYK(32|64) |
CMYKA |
CMYKA(8) | |
YCbCr |
||
CIELab |
Compressions
| Decoding | Encoding | |
|---|---|---|
| None | ✓ | ✓ |
| LZW | ✓ | ✓ |
| Deflate | ✓ | ✓ |
| PackBits | ✓ | ✓ |
| Fax4 | ✓ | not yet |
| JPEG | ✓ | not yet |
| ZSTD | ✓ | not yet |
Not yet supported
Formats and interpretations not listed above or with empty entries are unsupported.
- Baseline tags
ExtraSamples
- Extension tags
Fuzzing
This crate uses cargo-fuzz in order to test the image parser.
After installing it with cargo install cargo-fuzz on a nightly rustc, the
fuzzing harness can be run with recommended settings using
cargo fuzz run decode_image -snone -- -timeout=5.