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40 Commits

Author SHA1 Message Date
James R. Barlow
a35fcc9c43 Handle Ghostscript rasterization with DPI below 10 
Ghostscript may fail when asked to rasterize at very low DPI values
(below 10 on either axis). This adds a workaround that uses a minimum
of 10 DPI for the Ghostscript call, then resizes the output image to
match the dimensions that would have resulted from the original low
DPI request.

Fixes #1612
 2026-01-31 13:01:04 -08:00
James R. Barlow
bc745d4d81 Replace magic Ghostscript raster device strings with StrEnum 2026-01-20 10:44:25 -08:00
James R. Barlow
5acf21651f ruff lint and format 2026-01-13 01:50:57 -08:00
James R. Barlow
122450c19e Fix Ghostscript tests after default output type changed to 'auto' 
- Add --output-type pdfa to tests that exercise Ghostscript-specific
  behavior (test_gs_render_failure, test_ghostscript_pdfa_failure,
  test_ghostscript_mandatory_color_conversion)
- Add Gs106WarningFilter to suppress expected Ghostscript 10.6.x JPEG
  encoding warning in test logs
 2026-01-09 01:02:25 -08:00
James R. Barlow
e613db6a82 Fix Ghostscript 10.6 JPEG corruption by repairing truncated images 
Ghostscript 10.6 has a bug that truncates JPEG data by 1-15 bytes.
This adds detection and repair by comparing output images to input
images and restoring the original bytes when truncation is detected.

- Add warning when GS 10.6+ is used with PDF/A output
- Add _repair_gs106_jpeg_corruption() to fix damaged JPEGs after
  Ghostscript processing
- Add unit tests for the repair function
 2025-12-23 14:56:24 -08:00
James R. Barlow
175b743ffe Fix version test 2025-07-03 11:30:05 -07:00
James R. Barlow
45cf92f40b xfail Python logging bug in 3.13.3/4 2025-07-03 09:21:31 -07:00
James R. Barlow
137b054f43 Adjust test again for older Ghostscript 2025-01-27 23:44:37 -08:00
James R. Barlow
65df44f670 Modify tests to deal with variety of Ghostscript versions 2025-01-09 02:14:29 -08:00
James R. Barlow
6edc749023 Fix error handling when PDF contains an invalid image with both ImageMask and ColorSpace set 
Fixes #1453
 2025-01-07 00:27:07 -08:00
James R. Barlow
fe89be5dc0 Fix test broken in commit 85d6fb8c 2024-11-27 15:44:12 -08:00
James R. Barlow
27d5229842 Make logger names unique 2023-11-09 23:03:39 -08:00
James R. Barlow
a596ccf844 Raise exception if resulting PDF might appear blank in a known in some PDF viewers 
Fixes #1187
 2023-11-09 22:33:22 -08:00
James R. Barlow
e7fa97731f ghostscript duplicate filter: filter within a window of previous messages 2023-11-09 22:32:39 -08:00
James R. Barlow
1c45f32941 tests: replace many run_ocrmypdf -> run_ocrmypdf_api 2023-10-24 00:54:31 -07:00
James R. Barlow
fadc0cf69b Replace cryptic test error messages with more informative ones 2023-10-24 00:54:31 -07:00
James R. Barlow
eb3a51e33a Prefer pikepdf's newer Page.mediabox accessor over .MediaBox 2023-10-24 00:54:31 -07:00
James R. Barlow
7018e2b247 Refactor ghostscript error message deduplicating 2023-09-24 20:22:04 -07:00
James R. Barlow
80ed2117cc Change to SPDX license tracking 2022-07-28 01:10:07 -07:00
James R. Barlow
dc6f1a266a Modernize type annotations 2022-07-23 00:39:24 -07:00
James R. Barlow
3b406112d0 ghostscript: improve test coverage of error cases 2022-01-25 23:45:47 -08:00
James R. Barlow
13af3252ff tests: simplify run_ocrmypdf API 2021-12-06 17:00:25 -08:00
James R. Barlow
37923ffe52 Work around Pillow 8.3.1 DPI changes 
Pillow decided against round-tripping DPI values.
https://github.com/python-pillow/Pillow/pull/5476

Fixes #802
 2021-07-14 02:34:28 -07:00
James R. Barlow
173a80864d Delinting 2021-04-07 02:09:45 -07:00
James R. Barlow
aa115a8be3 Remove pytest_helpers_namespace 2021-04-07 01:56:51 -07:00
James R. Barlow
aa0ec40102 Change license of all GPLv3 files to MPL-2.0 
https://github.com/jbarlow83/OCRmyPDF/issues/600
 2020-08-05 00:44:42 -07:00
James R. Barlow
64891c2fc3 Pre-release delinting 2020-06-09 15:27:14 -07:00
James R. Barlow
0f942fb714 Rename ocrmypdf.exec -> ocrmypdf._exec 2020-06-09 14:59:09 -07:00
James R. Barlow
ebbf68bd08 The big payoff: abolishing spoofing machinery 2020-06-09 00:08:20 -07:00
James R. Barlow
2059e916da Convert all ghostscript spoofs to test plugins 2020-06-09 00:00:25 -07:00
James R. Barlow
1598f2f0e5 Abolish spoof_tesseract_noop 2020-06-01 03:07:53 -07:00
James R. Barlow
94c52a6fa3 Refactor 'xyres' into Resolution 2020-04-24 04:12:05 -07:00
James R. Barlow
57771f06a3 Refactor xy-pair for resolution to tuple 2020-04-16 15:38:33 -07:00
James R. Barlow
d146d2b65c The Great Logging Refactor 
Remove all instances of logger object being passed as parameters.
This was a holdover from ruffus, and complicated a lot of simple things.
 2020-04-14 23:59:33 -07:00
James R. Barlow
1037d73efb tests: use smaller files for ghostscript 2019-12-31 17:20:28 -08:00
James R. Barlow
422ea9777e Remove session scope from fixtures 
pytest seems to prepare os.environ in complex ways, so we want to ensure
these fixtures are not reused.
 2019-12-31 17:09:23 -08:00
James R. Barlow
4b759af6ff tests: fix problems with ghostscript spoofers 2019-12-31 15:33:03 -08:00
James R. Barlow
c5edff2c2f Sort imports 2019-12-19 15:31:18 -08:00
James R. Barlow
ca9669742d Move gs tests to test_ghostscript 2019-12-04 17:14:27 -08:00
James R. Barlow
bcdd196699 ghostscript: remove unnecessary post-render resizing step 2019-05-11 12:10:50 -07:00