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2016-09-26Strengthen bounds check in CWeightTable::Calc.stackexploit
The buffer PixelWeight.m_Weights was allocated by calling FX_TryAlloc(uint8_t, m_dwWeightTablesSize), but PixelWeight.m_Weights was an int array. Thus bounds check such as |if (idx >= m_dwWeightTablesSize)| in function CWeightTable::Calc() and |idx < m_dwWeightTablesSize ? &pWeight->m_Weights[idx] : nullptr| in function CWeightTable::GetValueFromPixelWeight() were insufficient. This CL strengthens bounds check for accessing int type array PixelWeight.m_Weights. BUG=chromium:619398 R=ochang@chromium.org, thestig@chromium.org Review-Url: https://codereview.chromium.org/2322903002
2016-09-15Rename dictionary set and get methodsdsinclair
This Cl makes the Get and Set methods consistenly use {G|S}et<Type>For. BUG=pdfium:596 Review-Url: https://codereview.chromium.org/2334323005
2016-08-11Fix an integer overflow in CStretchEngine constructorweili
When the source bitmap's width and height are large, the multiplication could easily overflow a signed integer. Change to use 'long long' type for calculation to avoid that. BUG=chromium:635663 Review-Url: https://codereview.chromium.org/2240723002
2016-08-10Move CFX_RenderDevice, CFX_FxgeDevice, and CFX_GraphStateData into their own ↵npm
files. This is the third CL to separate fx_ge into classes, one per file. All fx_ge.h includes had to be replaced with new includes The method definitions for CFX_FxgeDevice were not moved to a single file. These methods are defined in two folders different from fxge/ge, so they were left untouched for now. Review-Url: https://codereview.chromium.org/2223213002
2016-08-09Fix typos of the word outer.thestig
Review-Url: https://codereview.chromium.org/2226003003
2016-08-08Move CFX_ClipRgn and CFX_PathData into their own files.npm
This is the second CL in an attempt to split up the classes in fxge/include/fx_ge.h into their own files. CFX_ClipRgn is moved to core/fxge/ge because it is only used in core/fxge. The header for CFX_PathData is left in core/fxge/include since it is used elsewhere. Review-Url: https://codereview.chromium.org/2216853004
2016-08-04Move CFX_GEModule into its own filenpm
This is the first CL in an attempt to split up the classes in fxge/include/fx_ge.h into their own files. Review-Url: https://codereview.chromium.org/2217663002
2016-08-04Add bounds checks to CWeightTable::Calc() and friends.thestig
BUG=624514 Review-Url: https://codereview.chromium.org/2204773003
2016-07-29Fix a FPE in CStretchEngine::StartStretchHorz().thestig
Do some cleanup in the process. BUG=629839 Review-Url: https://codereview.chromium.org/2190283003
2016-07-21Use smart pointers for graphics device classesweili
Use unique_ptr for class owned member variables. Also clean up some style issues such as removing unused functions and casting to raw pointer. BUG=pdfium:518 Review-Url: https://codereview.chromium.org/2163103002
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
2016-06-22Remove some fx_dib functions with unused parameters.thestig
Review-Url: https://codereview.chromium.org/2075383002
2016-06-08Remove implicit CFX_CountedRef::operator T*()tsepez
Explicitly invoke GetObject() method instead. This avoids having code where it looks like non-pointers are assigned to pointers but works due to the cast operator. Review-Url: https://codereview.chromium.org/2045083003
2016-06-07Get rid of NULLs in core/thestig
Review-Url: https://codereview.chromium.org/2032613003
2016-06-02Fix all the code which has duplicate variable declarationsweili
When there are duplicate variable declarations, the inner names shadow the outter ones. This is error prone and harder to read. Remove all the instances found by /analyze. BUG=chromium:613623, chromium:427616 Review-Url: https://codereview.chromium.org/2027273002
2016-06-02The PDFium source in core/fxge/dib implements a bit-blitting backend.caryclark
This code has several disadvantages over a more modern graphics engine: - no SIMD support - no GPU support - limited quality Further, calling this code locks in the perceived resolution, so that the output cannot be scaled without additional loss. By directing all bitmap drawing through CFX_SkiaDeviceDriver::StartDIBits, Skia can handle all appropriate bitmap optimizations. To that end, SetDIBits and StretchDIBits now call StartDIBits. Other changes: Skia's bitmaps are premultiplied. PDF contains bitmaps that are unpremultiplied. PDFium appears to use premultiplied bitmaps sometimes, and unpremultiplied bitmaps elsewhere. Add a debug check for unpremultiplied bits in Skia's driver, and add a utility to premultiply PDFium's bitmaps' bits. PDFium supports a 24 bit RGB bitmap padded to a 32 bit word. Set the high byte so that Skia can treat this as an ARGB bitmap. Defer the application of the alpha value to the draw call rather than calling MultiplyAlpha where possible. Allow the destination bitmap to be alpha 8 or argb 32. Review-Url: https://codereview.chromium.org/2025043002
2016-05-26Remove default arguments from CFX_FxgeDevice.thestig
Remove unused dithering code. Review-Url: https://codereview.chromium.org/2010813003
2016-05-25Remove FX_GAMMA() and friends. They do nothing.thestig
Review-Url: https://codereview.chromium.org/2017503002
2016-05-12Clean up CFX_ImageTransformer.thestig
Review-Url: https://codereview.chromium.org/1973913002
2016-05-11Clean up CFX_ImageStretcher.thestig
Review-Url: https://codereview.chromium.org/1968273002
2016-05-11Fix a divide by zero in CFX_ImageStretcher.thestig
BUG=611198 Review-Url: https://codereview.chromium.org/1963233005
2016-04-19Remove a few more char* members from structs/classes.tsepez
This is a result of looking for the anti-paterns /char\*\sm_/ and /m_.*=.*\.c_str/ which indicate that a class may be using the contents of a string without extending the lifetime of the underlying storage. Along the way, change to uint8_t in fx_dib; this is unrelated but avoids grep hits (it is binary, not chars anyways). Also remove two string operators that make it easy to assign in a manner that does not extend contents lifetime. Review URL: https://codereview.chromium.org/1902953002
2016-04-12Remove ICodec_* Interfaces.dsinclair
All of the ICodec_* interfaces had a single implementation. This CL removes the interfaces and uses the concrete classes in their place. BUG=pdfium:468 Review URL: https://codereview.chromium.org/1876023003
2016-04-06Move include/fxcodec to fxcodec/includedsinclair
Review URL: https://codereview.chromium.org/1864153002
2016-04-06Move core/include/fxge to core/fxge/include.dsinclair
This CL is a straight move of the fxge includes into core/fxge/include. Review URL: https://codereview.chromium.org/1868533002
2016-03-25Remove FX_DWORD from core/ and delete definitionchromium/2695chromium/2694chromium/2693chromium/2692tsepez
Review URL: https://codereview.chromium.org/1832173003
2016-03-23Move core/include/fxcrt to core/fxcrt/include.Dan Sinclair
This CL moves the fxcrt code into the core/fxcrt directory. The only exception was fx_bidi.h which was moved into core/fxcrt as it is not used outside of core/. R=tsepez@chromium.org Review URL: https://codereview.chromium.org/1825953002 .
2016-03-22Re-enable MSVC warning 4702Wei Li
BUG=pdfium:29 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/1821423002 .
2016-03-21Remove unused FXDIB_PALETTE_ optionsTom Sepez
The only one that is ever used is FXDIB_PALETTE_loc, so remove the option entirely. In turn, this allows deleting about 2KB of unused constant tables. R=ochang@chromium.org Review URL: https://codereview.chromium.org/1809943007 .
2016-03-21Re-enable several MSVC warningsWei Li
Re-enable the following warnings: 4245: signed/unsigned conversion mismatch; 4310: cast may truncate data; 4389: operator on signed/unsigned mismatch; 4701: use potentially uninitialized local variable; 4706: assignment within conditional expression Clean up the code to avoid those warnings. BUG=pdfium:29 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/1801383002 .
2016-03-14Move core/src/ up to core/.Dan Sinclair
This CL moves the core/src/ files up to core/ and fixes up the include guards, includes and build files. R=tsepez@chromium.org Review URL: https://codereview.chromium.org/1800523005 .
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