| commit | bf42dfea544a8ea3269b139e940f3f8eb38f7a27 | [log] [tgz] |
|---|---|---|
| author | Bo Xu <bo_xu@foxitsoftware.com> | Wed Dec 17 17:51:00 2014 -0800 |
| committer | Bo Xu <bo_xu@foxitsoftware.com> | Wed Dec 17 17:51:00 2014 -0800 |
| tree | 2eedf59a9519706f4d1db486b2ee9571770444ae | |
| parent | 9f52a10839e62a8b58359d89e6f623cdcb77c71b [diff] |
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