Let the glymur library multiple cpus for decoding.

girder · Jan 15, 2021 · c5b6d79 · c5b6d79
1 parent 91c557f
commit c5b6d79
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,9 +5,11 @@
 ### Improvements
 - Better release bioformats resources (#502)
 - Better handling of tiff files with JPEG compression and RGB colorspace (#503)
+- The openjpeg tile source can decode with parallelism (#511)
 
 ### Bug Fixes
 - Harden updates of the item view after making a large image (#508)
+- Tiles in an unexpected color mode weren't consistently adjusted (#510)
 
 ## Version 1.3.2
 

diff --git a/sources/openjpeg/large_image_source_openjpeg/__init__.py b/sources/openjpeg/large_image_source_openjpeg/__init__.py
@@ -18,6 +18,7 @@
 
 import glymur
 import math
+import multiprocessing
 import PIL.Image
 import six
 import warnings
@@ -96,6 +97,7 @@ def __init__(self, path, **kwargs):
             self._openjpeg = glymur.Jp2k(largeImagePath)
         except glymur.jp2box.InvalidJp2kError:
             raise TileSourceException('File cannot be opened via Glymur and OpenJPEG.')
+        glymur.set_option('lib.num_threads', multiprocessing.cpu_count())
         self._openjpegHandles = queue.LifoQueue()
         for _ in range(self._maxOpenHandles - 1):
             self._openjpegHandles.put(None)