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Author SHA1 Message Date
Sergey "Shnatsel" Davidoff eaf9cc1d6c Merge branch 'main' into better-docs 2026-03-06 11:02:09 +00:00
Sergey "Shnatsel" Davidoff 34191fa9ca Merge branch 'main' into derive-debug 2026-03-06 10:55:44 +00:00
Sergey "Shnatsel" Davidoff b0bd33dbe4 Remove equality from rational types; can be implemented later via cross-multiplication 2026-03-06 10:54:37 +00:00
Sergey "Shnatsel" Davidoff 2ca2427c75 cargo fmt 2026-03-06 10:51:23 +00:00
Aurelia Molzer e8be8656f2 Merge pull request #353 from Shnatsel/non-exhaustive-compression 
Make Compression enum non-exhaustive
 2026-03-06 10:45:28 +00:00
Sergey "Shnatsel" Davidoff ea949032a2 cargo clippy --fix 2026-03-06 10:43:54 +00:00
Sergey "Shnatsel" Davidoff 87007d85a0 Derive Debug on Compression enum 2026-03-06 10:41:20 +00:00
Sergey "Shnatsel" Davidoff 2119bff354 More derives on TIFF value structs 2026-03-06 10:36:12 +00:00
Sergey "Shnatsel" Davidoff c62a69ec9d Expand predictor docs 2026-03-06 10:07:06 +00:00
Sergey "Shnatsel" Davidoff 79a791b49a Clarify predictor docs 2026-03-06 10:02:24 +00:00
Sergey "Shnatsel" Davidoff e1e9f36c5a Make Compression enum non-exhaustive 2026-03-06 09:49:10 +00:00
Aurelia Molzer 0ad653433a Merge pull request #352 from image-rs/iterate-over-raw-tiff-or-exif 
Open a Tiff without interpreting the first directory
 2026-03-06 08:34:19 +00:00
A. Molzer bf79af8de4 Add Decoder::open, deprecate new 2026-03-06 09:31:23 +01:00
Aurelia Molzer 54dddc4943 Merge pull request #347 from image-rs/iterate-over-raw-tiff-or-exif 
Enable iteration over raw, malformed tiff or exif
 2026-03-06 07:31:13 +00:00
A. Molzer be9b3a04b9 Expand documentation with TiffHeader 2026-03-06 06:05:32 +01:00
A. Molzer 08f1b25fac Drafting release notes 2026-03-06 05:35:45 +01:00
A. Molzer c7b97519a0 Error guarantee on decoder IFD iteration 2026-03-06 04:42:02 +01:00
A. Molzer e093e15bbe Remove redundant next_ifd attribute 2026-03-06 03:44:08 +01:00
A. Molzer 647e9b4a81 Add TiffHeader to open a file without seeking 2026-03-06 02:59:45 +01:00
Aurelia Molzer 31c49ea6ef Merge pull request #351 from Shnatsel/semver-breaking-deflate-level 
Implement DEFLATE compression level control properly, with a semver break
 2026-03-05 20:12:27 +00:00
Sergey "Shnatsel" Davidoff 0362e6e31d Implement DEFLATE compression level control properly, with a semver break 2026-03-05 17:59:18 +00:00
Sergey "Shnatsel" Davidoff 0fe5b2804e Merge pull request #348 from Shnatsel/deflate-level 
Expose precise DEFLATE level controls
 2026-03-05 17:23:59 +00:00
Sergey "Shnatsel" Davidoff a589010099 Fix typo 2026-03-05 12:22:37 +00:00
Sergey "Shnatsel" Davidoff 53498074a4 Merge impl blocks 2026-03-05 12:22:25 +00:00
Sergey "Shnatsel" Davidoff cb543cded7 Expose precise DEFLATE level controls 2026-03-05 11:58:18 +00:00
A. Molzer cf8f96568e Expose Decoder::seek_to_directory 2026-03-04 08:59:41 +01:00
A. Molzer 4ff88e658d Rewrite Decoder::seek_to_image 2026-03-04 05:12:31 +01:00
A. Molzer 14ebf376f3 Move Directory from image into decoder proper 
This prepares allowing to iterate over a TIFF file with invalid images
while `Image` maintains invariants. For instance we precalculate the
amount of buffer space and verify that the count of strips makes sense
in the constructor—so we do not have to redo that for every other entry
point.
 2026-03-04 03:37:42 +01:00
Aurelia Molzer 37578add53 Merge pull request #344 from RunDevelopment/fix-libtiffpic-test-for-windows 
Fix libtiffpic test for Windows
 2026-03-03 20:42:20 +00:00
Aurelia Molzer 2b9476566b Merge pull request #346 from RunDevelopment/invert-color-as-chunks 
More optimal code gen for `invert_colors`
 2026-03-03 20:30:20 +00:00
Aurelia Molzer 448a0e61d1 Merge pull request #345 from mpospelova/increase-group4reader-height-size 
Change Group4Reader height dimension from u16 to u32
 2026-03-03 20:23:52 +00:00
RunDevelopment d872ff8751 Unify grayscale integer code paths 2026-03-03 14:54:32 +01:00
RunDevelopment 0a878888db More optimal code gen for invert_colors 2026-03-03 14:36:16 +01:00
Maria Pospelova a0a95ef86e Fix formatting 2026-03-03 13:26:09 +00:00
RunDevelopment bbb5e5a41b Use std::path::MAIN_SEPARATOR 2026-03-03 14:13:00 +01:00
RunDevelopment f74169d4af Fix libtiffpic test for Windows 2026-03-03 14:11:24 +01:00
Maria Pospelova c304a3cc13 Upgrade Group4Reader dimensions from u16 to u32 2026-03-03 10:50:27 +00:00
Sergey "Shnatsel" Davidoff 9a9193345c Merge pull request #343 from Shnatsel/float-predictor-opt 
Optimize floating-point predictor encoding
 2026-02-27 01:14:36 +00:00
Sergey "Shnatsel" DavidoffandClaude 22046d4272 Simplify byte shuffle to direct scatter writes 
Replace chunked scratch-buffer approach with direct indexed writes
into the pre-allocated output. Simpler and faster in practice.

Co-Authored-By: Claude <noreply@anthropic.com>
 2026-02-27 01:02:41 +00:00
Sergey "Shnatsel" DavidoffandClaude 2c5fe2c2f5 Use chunked writes for byte shuffle in fp_predict 
Replace single-byte pushes with chunk-based processing: pre-allocate
zeroed output, shuffle 4 values at a time into a stack buffer, then
copy_from_slice each byte lane into the output.

Co-Authored-By: Claude <noreply@anthropic.com>
 2026-02-27 00:47:13 +00:00
Sergey "Shnatsel" DavidoffandClaude eceaa1f14d Add encoding benchmark for RGB32Float with float predictor and DEFLATE 
Co-Authored-By: Claude <noreply@anthropic.com>
 2026-02-27 00:27:40 +00:00
Aurelia Molzer d42db25c27 Merge pull request #342 from Shnatsel/float-predictor-encoding 
Implement floating-point predictor (Predictor 3) encoding
 2026-02-26 20:30:08 +00:00
Sergey "Shnatsel" DavidoffandClaude c74f23784c Vectorize byte-level horizontal differencing in fp_predict 
Process the difference step in reverse 16-byte chunks, reading both
curr and prev into local arrays before writing. This makes all 16
subtractions independent, enabling autovectorization (confirmed with
SSE2: movdqu + psubb).

Co-Authored-By: Claude <noreply@anthropic.com>
 2026-02-26 15:45:21 +00:00
Sergey "Shnatsel" DavidoffandClaude 8b0da5939a Deduplicate fp_predict_f32 and fp_predict_f64 with a declarative macro 
Replace the two near-identical floating-point predictor encoding
functions with a single fp_predict! macro parameterized on the float
type, using core::mem::size_of to derive the byte size.

Co-Authored-By: Claude <noreply@anthropic.com>
 2026-02-26 15:29:29 +00:00
Sergey "Shnatsel" Davidoff fdde3467fc Apply clippy lint 2026-02-26 15:00:21 +00:00
Sergey "Shnatsel" DavidoffandClaude Opus 4.5 3f2066bb20 Implement floating-point predictor (Predictor 3) encoding 
Add support for encoding TIFF images with the floating-point predictor,
which improves compression ratios for floating-point image data.

The floating-point predictor works by:
1. Converting floats to big-endian bytes
2. Shuffling bytes so all first bytes are together, all second bytes, etc.
3. Applying byte-level horizontal differencing across the buffer

This complements the existing decoding support for Predictor 3.

Supported types: Gray32Float, Gray64Float, RGB32Float, RGB64Float,
RGBA32Float, RGBA64Float, CMYK32Float, CMYK64Float.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-02-25 23:05:35 +00:00
Aurelia Molzer 2ac8be1177 Merge pull request #337 from image-rs/cieluv 
The whole libtiffpic test suite and SgiLuv compression
 2026-02-20 06:47:57 +00:00
A. Molzer c81d0a9c94 Skip endianess swap for SGI compression 2026-02-14 18:04:07 +01:00
A. Molzer 983c5baea0 Introduce LogL(uv) encodings 2026-02-14 18:04:07 +01:00
A. Molzer abf3cc617d Bump MSRV to 1.88 2026-02-14 18:04:07 +01:00