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Add TIFF compression and corresponding tests

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Christopher Gundler committed 2021-12-21 16:47:11 +01:00
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README.md
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@@ -16,25 +16,25 @@ TIFF decoding and encoding library in pure Rust
### 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) |
| `YCbCr` | | |
| `CIELab` | | |
| `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) |
| `YCbCr` | | |
| `CIELab` | | |
### Compressions
| | Decoding | Encoding |
|-|-|-|
| None | ✓ | ✓ |
| LZW | ✓ | |
| Deflate | ✓ | |
| PackBits | ✓ | |
| | Decoding | Encoding |
| -------- | -------- | -------- |
| None | ✓ | ✓ |
| LZW | ✓ | ✓ |
| Deflate | ✓ | ✓ |
| PackBits | ✓ | |
## Not yet supported