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| author | Bo Xu <bo_xu@foxitsoftware.com> | 2014-12-17 17:51:00 -0800 |
|---|---|---|
| committer | Bo Xu <bo_xu@foxitsoftware.com> | 2014-12-19 14:46:09 -0800 |
| commit | 56ee1b311559b239511c5549121fe34cb6368459 (patch) | |
| tree | 028762d71967c83ad3a17f139728aee928f815cf /core/src/fxcodec/jbig2/JBig2_SymbolDict.h | |
| parent | 786febb9c8e85b9215a6a5126c6386a9f4b4d280 (diff) | |
| download | pdfium-56ee1b311559b239511c5549121fe34cb6368459.tar.xz | |
XFA: merge patch from CL 761313004
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
Diffstat (limited to 'core/src/fxcodec/jbig2/JBig2_SymbolDict.h')
| -rw-r--r-- | core/src/fxcodec/jbig2/JBig2_SymbolDict.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/core/src/fxcodec/jbig2/JBig2_SymbolDict.h b/core/src/fxcodec/jbig2/JBig2_SymbolDict.h index cfe75db4c9..9156e30ea8 100644 --- a/core/src/fxcodec/jbig2/JBig2_SymbolDict.h +++ b/core/src/fxcodec/jbig2/JBig2_SymbolDict.h @@ -14,7 +14,7 @@ class CJBig2_SymbolDict : public CJBig2_Object public: CJBig2_SymbolDict(); - + CJBig2_SymbolDict *DeepCopy(); ~CJBig2_SymbolDict(); public: FX_DWORD SDNUMEXSYMS; |