Summary: | stream bindings for libopenjpeg | ||
---|---|---|---|
Product: | Ghostscript | Reporter: | Ralph Giles <ralph.giles> |
Component: | General | Assignee: | Alex Cherepanov <alex> |
Status: | RESOLVED FIXED | ||
Severity: | enhancement | CC: | christinedelight.top85, henry.stiles, lars |
Priority: | P4 | ||
Version: | master | ||
Hardware: | PC | ||
OS: | Linux | ||
Customer: | Word Size: | --- |
Description
Ralph Giles
2009-06-16 17:59:48 UTC
Marking this as suitable for the bounty program. I started on such a binding some months ago but haven't found the time to finish it. Assigning to myself as the likely reviewer. Assigning myself to this project. I started /branches/jpx_openjpeg/ and it is r11006 today. This is a current status report. Localcluster reported differences in 14 files. + tests/pdf/j2kp4-file2-ycc-8bpc.pdf + tests/pdf/j2kp4-file9-palette.pdf tests_private/comparefiles/Bug688807.pdf * tests_private/comparefiles/Bug689290.pdf * tests_private/comparefiles/Bug690174.pdf tests_private/comparefiles/jpx-689261.pdf * tests_private/comparefiles/jpx-flowcontrols.pdf * tests_private/comparefiles/jpx-johnny1.pdf * tests_private/pdf/PDFIA1.7_SUBSET/CATX1911.pdf * tests_private/pdf/PDFIA1.7_SUBSET/CATX2045.pdf tests_private/pdf/PDFIA1.7_SUBSET/CATX2071.pdf tests_private/pdf/PDFIA1.7_SUBSET/CATX2374.pdf * tests_private/pdf/PDFIA1.7_SUBSET/CATX5529.pdf * tests_private/pdf/PDFIA1.7_SUBSET/IA3Z3225.pdf Two files marked (+) are caused by openjpeg limitations. Openjpeg does not support image files with abnormal channel order (j2kp4-file2-ycc-8bpc.pdf), or palette image files (j2kp4-file9-palette.pdf). Files marked (*) rendered gray-ish garbage under some condition. I am still investigating the cause. Files without marks are the difference by decoding library. Some get better, some got worse (in my opinion.) Please see comment 6 on bug 691122 (http://bugs.ghostscript.com/show_bug.cgi?id=691122#c6) too. Just for information, we have 24 pdf files uses JPXDecode in our test suite right now. Those are: tests/pdf/j2kp4-file1-srgb-8bpc.pdf tests/pdf/j2kp4-file2-ycc-8bpc.pdf tests/pdf/j2kp4-file3-ycc-8bpc.pdf tests/pdf/j2kp4-file4-gray-8bpc.pdf tests/pdf/j2kp4-file5-icc-3ch-8bpc.pdf tests/pdf/j2kp4-file6-gray-12bpc.pdf tests/pdf/j2kp4-file7-icc-3ch-12bpc.pdf tests/pdf/j2kp4-file8-icc-1ch-8bpc.pdf tests/pdf/j2kp4-file9-palette.pdf tests_private/comparefiles/Bug688159.pdf tests_private/comparefiles/Bug688807.pdf tests_private/comparefiles/Bug689290.pdf tests_private/comparefiles/Bug689362.pdf tests_private/comparefiles/Bug689509.pdf tests_private/comparefiles/Bug690174.pdf tests_private/comparefiles/jpx-689261.pdf tests_private/comparefiles/jpx-flowcontrols.pdf tests_private/comparefiles/jpx-johnny1.pdf tests_private/pdf/PDFIA1.7_SUBSET/CATX1911.pdf tests_private/pdf/PDFIA1.7_SUBSET/CATX2045.pdf tests_private/pdf/PDFIA1.7_SUBSET/CATX2071.pdf tests_private/pdf/PDFIA1.7_SUBSET/CATX2374.pdf tests_private/pdf/PDFIA1.7_SUBSET/CATX5529.pdf tests_private/pdf/PDFIA1.7_SUBSET/IA3Z3225.pdf Grayish garbage problem was fixed in r11343. Linux machines needed "-std=c99" option to compile openjpeg library. And there's a good news. Coming release of openjpeg 1.4 is going to support palette image. r11647 (jpx_openjpeg branch) fixes j2kp4-file2-ycc-8bpc.pdf by applying a (modified) patch by Marek Mauder to our copy of openjpeg and making base/sjpx_opj.c respect the component definitions. The patch also adds support for paletted images, but it doesn't work for j2kp4-file9-palette.pdf, yet. Alex, can you update the status of this problem? We thought openjpeg was done, is anything from this report still needed? OpenJpeg is done. My recent patch that re-implements 1 bpc, multi-channel image support fixes the last known bug. |