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author | David Lattimore <dml@google.com> | 2015-10-09 08:18:20 +1100 |
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committer | David Lattimore <dml@google.com> | 2015-10-09 08:18:20 +1100 |
commit | f1b88e76134808f36f16b9e53a2e9dd89b12c8fd (patch) | |
tree | 215fae3dd4fe42787ea4cc2fa2a4d1e4cd587d76 /core/src/fxcodec/jbig2/JBig2_BitStream.h | |
parent | 8793b4a071fad51a770b93838e0752505b020e43 (diff) | |
download | pdfium-f1b88e76134808f36f16b9e53a2e9dd89b12c8fd.tar.xz |
Various changes to JBig2 cache:
- Makes the cache be per-document
- Keys the cache on ObjNum and stream offset instead of keying on a pointer to the data (which can result in false cache hits).
- Makes it so the cache is only used for the globals stream.
- Reenable the cache.
R=thestig@chromium.org
BUG=pdfium:207
Review URL: https://codereview.chromium.org/1380243004 .
Diffstat (limited to 'core/src/fxcodec/jbig2/JBig2_BitStream.h')
-rw-r--r-- | core/src/fxcodec/jbig2/JBig2_BitStream.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/core/src/fxcodec/jbig2/JBig2_BitStream.h b/core/src/fxcodec/jbig2/JBig2_BitStream.h index 9a3d8b0a18..c7c50b8c81 100644 --- a/core/src/fxcodec/jbig2/JBig2_BitStream.h +++ b/core/src/fxcodec/jbig2/JBig2_BitStream.h @@ -9,9 +9,11 @@ #include "../../../include/fxcrt/fx_basic.h" +class CPDF_StreamAcc; + class CJBig2_BitStream { public: - CJBig2_BitStream(const uint8_t* pBuffer, FX_DWORD dwLength); + explicit CJBig2_BitStream(CPDF_StreamAcc* pSrcStream); ~CJBig2_BitStream(); // TODO(thestig): readFoo() should return bool. @@ -36,6 +38,7 @@ class CJBig2_BitStream { const uint8_t* getPointer() const; void offset(FX_DWORD dwOffset); FX_DWORD getByteLeft() const; + FX_DWORD getObjNum() const; private: void AdvanceBit(); @@ -46,6 +49,7 @@ class CJBig2_BitStream { FX_DWORD m_dwLength; FX_DWORD m_dwByteIdx; FX_DWORD m_dwBitIdx; + const FX_DWORD m_dwObjNum; CJBig2_BitStream(const CJBig2_BitStream&) = delete; void operator=(const CJBig2_BitStream&) = delete; |