JPEG2000 GdkPixbuf loader

Nichlas Severinsen 6e6f824d2b Update README.md 1 month ago
src 6e6f824d2b Update README.md 1 month ago
tests 1aa31cce17 Add CMYK support 1 month ago
.editorconfig d2d28def6d Initial commit 3 months ago
.gitignore 39ef90d7bc Codestream support, partial gray colorspace support 3 months ago
CHANGELOG.md 1aa31cce17 Add CMYK support 1 month ago
COPYING d2d28def6d Initial commit 3 months ago
LICENSE.txt d2d28def6d Initial commit 3 months ago
README.md 6e6f824d2b Update README.md 1 month ago
meson.build 594b86a139 Minimal read 3 months ago
meson_options.txt d2d28def6d Initial commit 3 months ago

README.md

JPEG2000 Pixbuf Loader

This is a GdkPixbuf loader module for JPEG2000. It uses OpenJPEG to load JPEG2000 images as linear buffers in memory.

Note: by default there's already some JPEG2000 support in GdkPixbuf, but that uses the JasPer image library, which only support certain parts of the JPEG2000 standard, meaning certain images don't work.

Installing

Option 1. Compiling

meson build && cd build && ninja install

Option 2. Arch linux / AUR:

sudo aura -A jp2-pixbuf-loader -x

Copying / License

Copyright © 2020 Nichlas Severinsen

This loader module is licensed under the GNU Lesser General Public License, version 2.1; LGPLv2.1. also see COPYING

OpenJPEG is licensed under the 2-clauses BSD License.

Development

Debug

Build project then generate loaders.cache.in:

gdk-pixbuf-query-loaders libpixbufloader-jp2.so > ../tests/loaders.cache.in

Run tests:

ninja test or meson test --print-errorlogs

Run tests with gdb:

meson test --gdb

Run tests with valgrind:

meson test --wrap='valgrind --leak-check=full'

Run a specific test:

meson test basic --print-errorlogs

Todo

  • Better tests
  • Tests and testfiles for sYCC422 and sYCC444
  • Support for e-YCC? Need testfiles
  • Support for cielab? Need testfiles
  • icc profile?
  • Implement image_save;
  • Implement image_stop_load;
  • Implement image_begin_load;
  • Implement image_load_increment;
  • Implement image_save_to_callback;