Andrew Champion
d510a9f4ab
Resolve several TODOs where tag values were cast from u32 without checks by providing generic methods that error when the value fails casting to the desired type. In addition to being more correct, this simplifies and shortens decoding logic. Remove `find_tag_u32` and `find_tag_u32_vec` as they are now redundant and a GitHub code search found no usages outside copies of `image-tiff`.
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
- 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), Gray(16) | |
BlackIsZero |
Gray(8), Gray(16) | |
RGB |
RGB(8), RGB(16), RGBA(8), RGBA(16) | |
RGBPalette |
||
Mask |
||
CMYK |
CMYK(8) | |
YCbCr |
||
CIELab |
Compressions
| Decoding | Encoding | |
|---|---|---|
| None | ✓ | ✓ |
| LZW | ✓ | |
| Deflate | ✓ | |
| PackBits | ✓ |
Not yet supported
Formats and interpretations not listed above or with empty entries are unsupported.
- Baseline tags
ExtraSamples
- Extension tags
- BigTIFF