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path: root/core/fxcodec/jbig2/JBig2_Context.cpp
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2018-08-21Avoid copying some big vectors in JBIG2_SymbolDictTom Sepez
Change-Id: I662f65b53a1a17be0062c92452d82acbbe157477 Reviewed-on: https://pdfium-review.googlesource.com/40910 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-21Fix lifetime issue in CJBig2_GRDProc::ProgressiveArithDecodeStateTom Sepez
Bug: 876222 Change-Id: I56c20c006ee26650f32b9ec90f3c7f91466b7470 Reviewed-on: https://pdfium-review.googlesource.com/40890 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-10Fix a JBIG2 decoding regression.Lei Zhang
When trying to sanity check SBNUMINSTANCES for JBIG2 text regions for https://crbug.com/837192, the check did not take data encoding into account. Fix this by assuming there is a potential for 16:1 compression in the lossless encoding. BUG=chromium:871848 Change-Id: I991dacff9fbefa4e302f5ce92a355902ef94308a Reviewed-on: https://pdfium-review.googlesource.com/39790 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-06-13Make CJBig2_Context::GetHuffmanTable return constNicolas Pena
This CL changes GetHuffmanTable() to return a const pointer and fixes other members / functions accordingly. Change-Id: Ie62fe044b3156f67885dd4fa1f6512cbd35a83d3 Reviewed-on: https://pdfium-review.googlesource.com/35116 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
2018-05-24Do some variable cleanup in CJBig2_ContextNicolas Pena
This CL cleans up variables in CJBig2_Context. It moves some declarations further, to when the variables are actually used. It also caches huffman tables in a vector of unique_ptr. Change-Id: Id3af96f9526b1000f681e4e2b174bba07b45ee55 Reviewed-on: https://pdfium-review.googlesource.com/32715 Commit-Queue: Nicolás Peña Moreno <npm@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-05-22Remove JBIG2_memcpy() and JBIG2_memset().Lei Zhang
Just use memcpy() and memset(). Change-Id: Id6c6fab4e65a5524786ae318270c5981313825f2 Reviewed-on: https://pdfium-review.googlesource.com/32743 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-05-22Fix method style in JBig2_Image.Lei Zhang
Rename fooBar() to FooBar(). Change-Id: I87775fa14ce7e4f4a5897780d0d02fb61c7693ff Reviewed-on: https://pdfium-review.googlesource.com/32739 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-16Move JBig2 HuffmanTables into JBig2_HuffmanTable.cppNicolas Pena
This CL changes the table information so it can be indexed, and allows moving all of the information to the CJBig2_HuffmanTable implementation, which is the only real user of the data. Change-Id: I88780bee32c8509198518fd3b1e82d68ae7ff707 Reviewed-on: https://pdfium-review.googlesource.com/32635 Commit-Queue: Nicolás Peña Moreno <npm@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-05-14Merge some values of JBig2_ResultNicolas Pena
This CL merges some of the values of JBig2_Result. The only checks are against Success and EndOfFile || EndOfPage, so we only need three values: Success, EndReached, and Failure (for anything that does not match either of those two). Change-Id: I552c54f2d70aa8e8bf52702dab4dfc00d528ef76 Reviewed-on: https://pdfium-review.googlesource.com/32393 Commit-Queue: Nicolás Peña Moreno <npm@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-05-09Use enum class instead of int in CJBig2_Contextchromium/3426Nicolas Pena
This CL changes CJBig2_Context return methods as follows: * Internal methods return JBig2_Result instead of int. * Public methods return a bool (for success/failure) instead of int. In a followup, several of the enum class values may be merged together since they are not all needed. Change-Id: Ifdab83b8037262370cd7c4a80e94aa94d59aa589 Reviewed-on: https://pdfium-review.googlesource.com/32310 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
2018-05-02Make several Huffman decoders consistently check for integer overflows.Lei Zhang
BUG=chromium:837972 Change-Id: I6cfa28bff38870419e4b1e2bced427cfcbf843cd Reviewed-on: https://pdfium-review.googlesource.com/31912 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-01Add struct CJBig2_GRDProc::ProgressiveArithDecodeState.Lei Zhang
Track the decode state in one data structure. Also grab pointers to data structure members before tight loops when decoding. It turns out referring to this->foo in tight loops can actually slow down decoding. Change-Id: I6a09b08ca06ef05968966055b5ad20f8c89896af Reviewed-on: https://pdfium-review.googlesource.com/31790 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-01Clean up CJBig2_Image compose methods.Lei Zhang
- Mark them private when possible. - Disambiguate method names. - Make method names match the style guide. - Pass in rects by reference. Change-Id: I0bf848756e81a92d20e46a81cd6260b660eaf482 Reviewed-on: https://pdfium-review.googlesource.com/31772 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-27Remove CJBig2_HuffmanTable::InitCodes().Lei Zhang
Use CJBig2_Context::HuffmanAssignCode() instead. Change-Id: Ief187420494a8cefa26eeedb98a55683caf7807b Reviewed-on: https://pdfium-review.googlesource.com/31538 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-04-27Adjust CJBig2_Context::HuffmanAssignCode().Lei Zhang
It looks a lot like CJBig2_HuffmanTable::InitCodes(). Port over the UBSAN error fix from commit 76c9a1b1. BUG=chromium:709781 Change-Id: I5d2f8fb013c09099c82b0565627b77e4fb0f8a98 Reviewed-on: https://pdfium-review.googlesource.com/31536 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-04-27Simplify CJBig2_Context::DecodeSymbolIDHuffmanTable().Lei Zhang
One of its parameters is a member variable. Change-Id: I0dcb78275d9ea5b05a77e211d178a0efb8699395 Reviewed-on: https://pdfium-review.googlesource.com/31535 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-04-27Simplify CJBig2_Context::FindReferredSegmentByTypeAndIndex().Lei Zhang
It only looks for a single segment type. Change-Id: I83457c6f74c210299caec79a563e7876f4d1d9ea Reviewed-on: https://pdfium-review.googlesource.com/31534 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-04-27Fix style for many jbig2 methods.chromium/3412Lei Zhang
Change-Id: Ie700e132f13f2cb4851ea59b68c891e3c42af243 Reviewed-on: https://pdfium-review.googlesource.com/31531 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-27Add CJBig2_Image::IsValidImageSize() helper method.Lei Zhang
Change-Id: Ic2acd6f03b9b2e52b3d94d7579d5dc36c8e62c96 Reviewed-on: https://pdfium-review.googlesource.com/31530 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-27Sanitize another image size in CJBig2_Context::parseHalftoneRegion().Lei Zhang
BUG=chromium:836872 Change-Id: I0362fd7708043648bffa26c9248b401ea2793a21 Reviewed-on: https://pdfium-review.googlesource.com/31510 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-27Sanitize the SBNUMINSTANCES value in the JBIG2 decoder.Lei Zhang
BUG=chromium:837192 Change-Id: Ib9c0e7b4aeb6501e81308844d344a784f7c138d8 Reviewed-on: https://pdfium-review.googlesource.com/31490 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-23Add more image size checks in CJBig2_Context.Lei Zhang
BUG=chromium:834557 Change-Id: I8fb8d74f87097b39608c3f83f2fa1c4e49e69980 Reviewed-on: https://pdfium-review.googlesource.com/31170 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-03-06Rename core/fxcrt IFX files to IfaceDan Sinclair
This CL renames the 3 IFX files in core/fxcrt to Iface instead. Change-Id: I7cee6836650b71bc5c5729a8147fda62f0910fe3 Reviewed-on: https://pdfium-review.googlesource.com/27970 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-11-28Remove CollectionSize from JBig2_ContextDan Sinclair
Bug: pdfium:774 Change-Id: Ie7674ac55dea6284a0d974cef107ef357197a06b Reviewed-on: https://pdfium-review.googlesource.com/19610 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2017-11-09Rename some methods in CJBig2_Contextchromium/3264Nicolas Pena
This CL improves some method names and does other basic cleanup. Change-Id: I32ea88ff29383e9685d4c686625088c96f73f035 Reviewed-on: https://pdfium-review.googlesource.com/18210 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
2017-11-08Prevent cyclic offset on CJBig2_ContextNicolas Pena
This CL changes the type of |m_dwOffset| to safe unsigned integer to prevent the offset from cycling from MAX_UINT32 back to 0. Bug: chromium:778912 Change-Id: Ib93a8392e52eecf2cc223438ac85e9dc529b0f43 Reviewed-on: https://pdfium-review.googlesource.com/18130 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
2017-11-07Use MaybeOwned in CJBig2_ImageNicolas Pena
Change-Id: Id53cbb8c95f6eb929f6e4eb57333daa24f1b776f Reviewed-on: https://pdfium-review.googlesource.com/18010 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
2017-09-21Rename CFX_RetainPtr to RetainPtrDan Sinclair
This CL renames CFX_RetainPtr to RetainPtr and places in the fxcrt namespace. Bug: pdfium:898 Change-Id: I8798a9f79cb0840d3f037e8d04937cedd742914e Reviewed-on: https://pdfium-review.googlesource.com/14616 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-08-31Use vector instead of pointer in CJBig2_SegmentNicolas Pena
Change-Id: Ic54e0491d9b33a06b5f85963f8127bfa4263f4d6 Reviewed-on: https://pdfium-review.googlesource.com/12450 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-08-31Split IFX_Pause out of fx_basicDan Sinclair
This CL moves IFX_Pause out to its own class from fx_basic and updates includes as needed. Change-Id: Iebdd183d8c85aa17570f190f1a7d1602c0af3c8b Reviewed-on: https://pdfium-review.googlesource.com/12491 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-08-30Fix undefined shift in CJBig2_Context::decodeSymbolIDHuffmanTableNicolas Pena
Bug: chromium:755532 Change-Id: Ib04426fab52d0ca1d2544a21fd2ce4faaa57123f Reviewed-on: https://pdfium-review.googlesource.com/12430 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña <npm@chromium.org>
2017-07-17Simplify CJBig2_Context::huffman_assign_codeNicolas Pena
This CL removes duplicate huffman_assign_code()s and changes some return values and members to std::vector. Change-Id: I47a1e0e2e88ff54ec799c97e92ec9ff5ca87c6c7 Reviewed-on: https://pdfium-review.googlesource.com/7910 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-07-14More unique_ptrs in JBIG2 code part 2Nicolas Pena
This CL makes HDPATS in CJBig2_PatternDict be a vector of unique_ptr. Change-Id: Ib23aed6323d4a988b2eedc4bfe95f2098d32c188 Reviewed-on: https://pdfium-review.googlesource.com/7871 Commit-Queue: Nicolás Peña <npm@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-07-13More unique_ptrs in JBig2 codeNicolas Pena
This CL makes CJBig2_Segment own the results: symbol, pattern, huffman, and huffman. This causes a lot more unique_ptr usage in JBig2 code. Change-Id: I1f0a5bfaaf85053658b467bef5325c72d1f496c7 Reviewed-on: https://pdfium-review.googlesource.com/7690 Commit-Queue: Nicolás Peña <npm@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2017-05-26IFX_Pause is passed to CJBig2_Context, no need to store.chromium/3113Tom Sepez
Avoids the possibility of having a stale pointer in the context. Bug: 726653 Change-Id: I8b41d2ab04e7ab07e694431b53491b3d0861e4ee Reviewed-on: https://pdfium-review.googlesource.com/6074 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-05-26Pass CJBig2_ArithDecoder to CJBig2_GRDProc as needed.Tom Sepez
Avoid holding a stale pointer to it in CJBig2_GRDProc. Bug: 726732 Change-Id: Ia3797a3e087f61bd2126f867fd5a282e873de5bc Reviewed-on: https://pdfium-review.googlesource.com/6050 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2017-05-05More unused IFX_Pause parameters removedchromium/3091Dan Sinclair
Remove IFX_Pause parameters which are passed but not used. Change-Id: I51a491c7f9a429676d114a387390fac3ae65e187 Reviewed-on: https://pdfium-review.googlesource.com/4950 Reviewed-by: Nicolás Peña <npm@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-04-04RefCount CPDF_StreamAcc all the time.Tom Sepez
Pass stream argument to constructor; it feels like a stream accessor should always be made from a stream rather than passing one in after the fact. Change-Id: Iaa46cb37677b81f0170f5d39bab76ad38ea4af44 Reviewed-on: https://pdfium-review.googlesource.com/3620 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2017-03-30Add some calls to MakeUniqueDan Sinclair
This CL replaces some new's with pdfium::MakeUnique. Change-Id: I50faf3ed55e7730b094c14a7989a9dd51cf33cbb Reviewed-on: https://pdfium-review.googlesource.com/3430 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2016-12-14Remove CJBig2_List in favor of std::vector<std::unique_ptr<>>tsepez
Review-Url: https://codereview.chromium.org/2578663002
2016-12-14Avoid the ptr.reset(new XXX()) anti-patterntsepez
Be suspicious of |new|. This removes some of the easy cases. Review-Url: https://codereview.chromium.org/2571913002
2016-11-02Remove FX_BOOL from coretsepez
Review-Url: https://codereview.chromium.org/2477443002
2016-10-28Change some ints to bools in JBIG2 code.thestig
Review-Url: https://codereview.chromium.org/2450393004
2016-10-04Move core/fpdfapi/fpdf_parser to core/fpdfapi/parserdsinclair
BUG=pdfium:603 Review-Url: https://codereview.chromium.org/2392603004
2016-09-29Move core/fpdfapi/fpdf_parser/include to core/fpdfapi/fpdf_parserdsinclair
BUG=pdfium:611 Review-Url: https://codereview.chromium.org/2383543002
2016-08-02Bound total pixels in JBig2 images to avoid overflows later.tsepez
Also make these private to ensure they aren't modified so as to violate the bounds checks applied at creation time. BUG=633002 Review-Url: https://codereview.chromium.org/2202013002
2016-07-24Remove CFX_Deletableweili
Change the last use of CFX_Deletable to its actual type and remove the use of CFX_Deletable. Review-Url: https://codereview.chromium.org/2178613002
2016-07-19Use smart pointers for various Jbig2 decoding contextsweili
Use unique_ptr for class owned member variables, and remove unnecessary or unused functions and member variable. BUG=pdfium:518 Review-Url: https://codereview.chromium.org/2149903002
2016-06-07Get rid of NULLs in core/thestig
Review-Url: https://codereview.chromium.org/2032613003
2016-06-03Fix some code which causes warnings when compiled by /analyze toolweili
The code may not cause error conditions, but can be improved. These warnings include uninitialized variables, signed/unsigned mismatch, redundant condition, and using bool in arithmetic operations. Also remove a chunk of unused code. BUG=chromium:613623, chromium:427616 Review-Url: https://codereview.chromium.org/2036203004
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