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authorBo Xu <bo_xu@foxitsoftware.com>2014-12-17 17:51:00 -0800
committerBo Xu <bo_xu@foxitsoftware.com>2014-12-17 17:51:00 -0800
commitbf42dfea544a8ea3269b139e940f3f8eb38f7a27 (patch)
tree2eedf59a9519706f4d1db486b2ee9571770444ae /core/src/fxcodec/libjpeg/jpegint.h
parent9f52a10839e62a8b58359d89e6f623cdcb77c71b (diff)
downloadpdfium-bf42dfea544a8ea3269b139e940f3f8eb38f7a27.tar.xz
Add a small LRU cache for the JBIG2 symbol dictionary.
This reduces rendering time on my test document by over 10 seconds. It is super common for a JBIG2 dictionary to span multiple pages, so we don't want to decode the same dictionary over and over again. Original patch from Jeff Breidenbach (breidenbach@gmail.com) BUG=https://code.google.com/p/pdfium/issues/detail?id=85 R=bo_xu@foxitsoftware.com, thestig@chromium.org Review URL: https://codereview.chromium.org/761313004
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