cppcheck/test/bug-hunting/cve/CVE-2019-10024/Splash.h

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//========================================================================
//
// Splash.h
//
// Copyright 2003-2013 Glyph & Cog, LLC
//
//========================================================================
#ifndef SPLASH_H
#define SPLASH_H
#include <aconf.h>
#ifdef USE_GCC_PRAGMAS
#pragma interface
#endif
#include "SplashTypes.h"
#include "SplashClip.h"
class Splash;
class SplashBitmap;
struct SplashGlyphBitmap;
class SplashState;
class SplashPattern;
class SplashScreen;
class SplashPath;
class SplashXPath;
class SplashFont;
struct SplashPipe;
//------------------------------------------------------------------------
// Retrieves the next line of pixels in an image mask. Normally,
// fills in *<line> and returns true. If the image stream is
// exhausted, returns false.
typedef GBool (*SplashImageMaskSource)(void *data, Guchar *pixel);
// Retrieves the next line of pixels in an image. Normally, fills in
// *<line> and returns true. If the image stream is exhausted,
// returns false.
typedef GBool (*SplashImageSource)(void *data, SplashColorPtr colorLine,
Guchar *alphaLine);
//------------------------------------------------------------------------
enum SplashPipeResultColorCtrl {
splashPipeResultColorNoAlphaBlendMono,
splashPipeResultColorNoAlphaBlendRGB,
#if SPLASH_CMYK
splashPipeResultColorNoAlphaBlendCMYK,
#endif
splashPipeResultColorAlphaNoBlendMono,
splashPipeResultColorAlphaNoBlendRGB,
#if SPLASH_CMYK
splashPipeResultColorAlphaNoBlendCMYK,
#endif
splashPipeResultColorAlphaBlendMono,
splashPipeResultColorAlphaBlendRGB
#if SPLASH_CMYK
,
splashPipeResultColorAlphaBlendCMYK
#endif
};
//------------------------------------------------------------------------
// Splash
//------------------------------------------------------------------------
class Splash {
public:
// Create a new rasterizer object.
Splash(SplashBitmap *bitmapA, GBool vectorAntialiasA,
SplashScreenParams *screenParams = NULL);
Splash(SplashBitmap *bitmapA, GBool vectorAntialiasA,
SplashScreen *screenA);
~Splash();
//----- state read
SplashCoord *getMatrix();
SplashPattern *getStrokePattern();
SplashPattern *getFillPattern();
SplashScreen *getScreen();
SplashBlendFunc getBlendFunc();
SplashCoord getStrokeAlpha();
SplashCoord getFillAlpha();
SplashCoord getLineWidth();
int getLineCap();
int getLineJoin();
SplashCoord getMiterLimit();
SplashCoord getFlatness();
SplashCoord *getLineDash();
int getLineDashLength();
SplashCoord getLineDashPhase();
SplashStrokeAdjustMode getStrokeAdjust();
SplashClip *getClip();
SplashBitmap *getSoftMask();
GBool getInNonIsolatedGroup();
GBool getInKnockoutGroup();
//----- state write
void setMatrix(SplashCoord *matrix);
void setStrokePattern(SplashPattern *strokeColor);
void setFillPattern(SplashPattern *fillColor);
void setScreen(SplashScreen *screen);
void setBlendFunc(SplashBlendFunc func);
void setStrokeAlpha(SplashCoord alpha);
void setFillAlpha(SplashCoord alpha);
void setLineWidth(SplashCoord lineWidth);
void setLineCap(int lineCap);
void setLineJoin(int lineJoin);
void setMiterLimit(SplashCoord miterLimit);
void setFlatness(SplashCoord flatness);
// the <lineDash> array will be copied
void setLineDash(SplashCoord *lineDash, int lineDashLength,
SplashCoord lineDashPhase);
void setStrokeAdjust(SplashStrokeAdjustMode strokeAdjust);
// NB: uses transformed coordinates.
void clipResetToRect(SplashCoord x0, SplashCoord y0,
SplashCoord x1, SplashCoord y1);
// NB: uses transformed coordinates.
SplashError clipToRect(SplashCoord x0, SplashCoord y0,
SplashCoord x1, SplashCoord y1);
// NB: uses untransformed coordinates.
SplashError clipToPath(SplashPath *path, GBool eo);
void setSoftMask(SplashBitmap *softMask);
void setInTransparencyGroup(SplashBitmap *groupBackBitmapA,
int groupBackXA, int groupBackYA,
GBool nonIsolated, GBool knockout);
void setTransfer(Guchar *red, Guchar *green, Guchar *blue, Guchar *gray);
void setOverprintMask(Guint overprintMask);
void setEnablePathSimplification(GBool en);
//----- state save/restore
void saveState();
SplashError restoreState();
//----- drawing operations
// Fill the bitmap with <color>. This is not subject to clipping.
void clear(SplashColorPtr color, Guchar alpha = 0x00);
// Stroke a path using the current stroke pattern.
SplashError stroke(SplashPath *path);
// Fill a path using the current fill pattern.
SplashError fill(SplashPath *path, GBool eo);
// Draw a character, using the current fill pattern.
SplashError fillChar(SplashCoord x, SplashCoord y, int c, SplashFont *font);
// Draw a glyph, using the current fill pattern. This function does
// not free any data, i.e., it ignores glyph->freeData.
SplashError fillGlyph(SplashCoord x, SplashCoord y,
SplashGlyphBitmap *glyph);
// Draws an image mask using the fill color. This will read <h>
// lines of <w> pixels from <src>, starting with the top line. "1"
// pixels will be drawn with the current fill color; "0" pixels are
// transparent. The matrix:
// [ mat[0] mat[1] 0 ]
// [ mat[2] mat[3] 0 ]
// [ mat[4] mat[5] 1 ]
// maps a unit square to the desired destination for the image, in
// PostScript style:
// [x' y' 1] = [x y 1] * mat
// Note that the Splash y axis points downward, and the image source
// is assumed to produce pixels in raster order, starting from the
// top line.
SplashError fillImageMask(SplashImageMaskSource src, void *srcData,
int w, int h, SplashCoord *mat,
GBool glyphMode, GBool interpolate);
// Draw an image. This will read <h> lines of <w> pixels from
// <src>, starting with the top line. These pixels are assumed to
// be in the source mode, <srcMode>. If <srcAlpha> is true, the
// alpha values returned by <src> are used; otherwise they are
// ignored. The following combinations of source and target modes
// are supported:
// source target
// ------ ------
// Mono8 Mono1 -- with dithering
// Mono8 Mono8
// RGB8 RGB8
// BGR8 RGB8
// CMYK8 CMYK8
// The matrix behaves as for fillImageMask.
SplashError drawImage(SplashImageSource src, void *srcData,
SplashColorMode srcMode, GBool srcAlpha,
int w, int h, SplashCoord *mat,
GBool interpolate);
// Composite a rectangular region from <src> onto this Splash
// object.
SplashError composite(SplashBitmap *src, int xSrc, int ySrc,
int xDest, int yDest, int w, int h,
GBool noClip, GBool nonIsolated);
// Composite this Splash object onto a background color. The
// background alpha is assumed to be 1.
void compositeBackground(SplashColorPtr color);
// Copy a rectangular region from <src> onto the bitmap belonging to
// this Splash object. The destination alpha values are all set to
// zero.
SplashError blitTransparent(SplashBitmap *src, int xSrc, int ySrc,
int xDest, int yDest, int w, int h);
// Copy a rectangular region from the bitmap belonging to this
// Splash object to <dest>. The alpha values are corrected for a
// non-isolated group.
SplashError blitCorrectedAlpha(SplashBitmap *dest, int xSrc, int ySrc,
int xDest, int yDest, int w, int h);
//----- misc
// Construct a path for a stroke, given the path to be stroked and
// the line width <w>. All other stroke parameters are taken from
// the current state. If <flatten> is true, this function will
// first flatten the path and handle the linedash.
SplashPath *makeStrokePath(SplashPath *path, SplashCoord w,
int lineCap, int lineJoin,
GBool flatten = gTrue);
// Reduce the size of a rectangle as much as possible by moving any
// edges that are completely outside the clip region. Returns the
// clipping status of the resulting rectangle.
SplashClipResult limitRectToClipRect(int *xMin, int *yMin,
int *xMax, int *yMax);
// Return the associated bitmap.
SplashBitmap *getBitmap() { return bitmap; }
// Set the minimum line width.
void setMinLineWidth(SplashCoord w) { minLineWidth = w; }
// Get a bounding box which includes all modifications since the
// last call to clearModRegion.
void getModRegion(int *xMin, int *yMin, int *xMax, int *yMax)
{ *xMin = modXMin; *yMin = modYMin; *xMax = modXMax; *yMax = modYMax; }
// Clear the modified region bounding box.
void clearModRegion();
// Get clipping status for the last drawing operation subject to
// clipping.
SplashClipResult getClipRes() { return opClipRes; }
// Toggle debug mode on or off.
void setDebugMode(GBool debugModeA) { debugMode = debugModeA; }
#if 1 //~tmp: turn off anti-aliasing temporarily
void setInShading(GBool sh) { inShading = sh; }
#endif
private:
void pipeInit(SplashPipe *pipe, SplashPattern *pattern,
Guchar aInput, GBool usesShape,
GBool nonIsolatedGroup);
void pipeRun(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
void pipeRunSimpleMono1(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
void pipeRunSimpleMono8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
void pipeRunSimpleRGB8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
void pipeRunSimpleBGR8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
#if SPLASH_CMYK
void pipeRunSimpleCMYK8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
#endif
void pipeRunShapeMono1(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
void pipeRunShapeMono8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
void pipeRunShapeRGB8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
void pipeRunShapeBGR8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
#if SPLASH_CMYK
void pipeRunShapeCMYK8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
#endif
void pipeRunAAMono1(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
void pipeRunAAMono8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
void pipeRunAARGB8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
void pipeRunAABGR8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
#if SPLASH_CMYK
void pipeRunAACMYK8(SplashPipe *pipe, int x0, int x1, int y,
Guchar *shapePtr, SplashColorPtr cSrcPtr);
#endif
void transform(SplashCoord *matrix, SplashCoord xi, SplashCoord yi,
SplashCoord *xo, SplashCoord *yo);
void updateModX(int x);
void updateModY(int y);
void strokeNarrow(SplashPath *path);
void drawStrokeSpan(SplashPipe *pipe, int x0, int x1, int y, GBool noClip);
void strokeWide(SplashPath *path, SplashCoord w,
int lineCap, int lineJoin);
SplashPath *flattenPath(SplashPath *path, SplashCoord *matrix,
SplashCoord flatness);
void flattenCurve(SplashCoord x0, SplashCoord y0,
SplashCoord x1, SplashCoord y1,
SplashCoord x2, SplashCoord y2,
SplashCoord x3, SplashCoord y3,
SplashCoord *matrix, SplashCoord flatness2,
SplashPath *fPath);
SplashPath *makeDashedPath(SplashPath *xPath);
SplashError fillWithPattern(SplashPath *path, GBool eo,
SplashPattern *pattern, SplashCoord alpha);
SplashPath *tweakFillPath(SplashPath *path);
GBool pathAllOutside(SplashPath *path);
SplashError fillGlyph2(int x0, int y0, SplashGlyphBitmap *glyph);
void getImageBounds(SplashCoord xyMin, SplashCoord xyMax,
int *xyMinI, int *xyMaxI);
void upscaleMask(SplashImageMaskSource src, void *srcData,
int srcWidth, int srcHeight,
SplashCoord *mat, GBool glyphMode,
GBool interpolate);
void arbitraryTransformMask(SplashImageMaskSource src, void *srcData,
int srcWidth, int srcHeight,
SplashCoord *mat, GBool glyphMode,
GBool interpolate);
SplashBitmap *scaleMask(SplashImageMaskSource src, void *srcData,
int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
GBool interpolate);
void scaleMaskYdXd(SplashImageMaskSource src, void *srcData,
int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
SplashBitmap *dest);
void scaleMaskYdXu(SplashImageMaskSource src, void *srcData,
int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
SplashBitmap *dest);
void scaleMaskYuXd(SplashImageMaskSource src, void *srcData,
int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
SplashBitmap *dest);
void scaleMaskYuXu(SplashImageMaskSource src, void *srcData,
int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
SplashBitmap *dest);
void scaleMaskYuXuI(SplashImageMaskSource src, void *srcData,
int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
SplashBitmap *dest);
void blitMask(SplashBitmap *src, int xDest, int yDest,
SplashClipResult clipRes);
void upscaleImage(SplashImageSource src, void *srcData,
SplashColorMode srcMode, int nComps,
GBool srcAlpha, int srcWidth, int srcHeight,
SplashCoord *mat, GBool interpolate);
void arbitraryTransformImage(SplashImageSource src, void *srcData,
SplashColorMode srcMode, int nComps,
GBool srcAlpha,
int srcWidth, int srcHeight,
SplashCoord *mat, GBool interpolate);
SplashBitmap *scaleImage(SplashImageSource src, void *srcData,
SplashColorMode srcMode, int nComps,
GBool srcAlpha, int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
GBool interpolate);
void scaleImageYdXd(SplashImageSource src, void *srcData,
SplashColorMode srcMode, int nComps,
GBool srcAlpha, int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
SplashBitmap *dest);
void scaleImageYdXu(SplashImageSource src, void *srcData,
SplashColorMode srcMode, int nComps,
GBool srcAlpha, int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
SplashBitmap *dest);
void scaleImageYuXd(SplashImageSource src, void *srcData,
SplashColorMode srcMode, int nComps,
GBool srcAlpha, int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
SplashBitmap *dest);
void scaleImageYuXu(SplashImageSource src, void *srcData,
SplashColorMode srcMode, int nComps,
GBool srcAlpha, int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
SplashBitmap *dest);
void scaleImageYuXuI(SplashImageSource src, void *srcData,
SplashColorMode srcMode, int nComps,
GBool srcAlpha, int srcWidth, int srcHeight,
int scaledWidth, int scaledHeight,
SplashBitmap *dest);
void vertFlipImage(SplashBitmap *img, int width, int height,
int nComps);
void horizFlipImage(SplashBitmap *img, int width, int height,
int nComps);
void blitImage(SplashBitmap *src, GBool srcAlpha, int xDest, int yDest,
SplashClipResult clipRes);
void blitImageClipped(SplashBitmap *src, GBool srcAlpha,
int xSrc, int ySrc, int xDest, int yDest,
int w, int h);
void dumpPath(SplashPath *path);
void dumpXPath(SplashXPath *path);
static SplashPipeResultColorCtrl pipeResultColorNoAlphaBlend[];
static SplashPipeResultColorCtrl pipeResultColorAlphaNoBlend[];
static SplashPipeResultColorCtrl pipeResultColorAlphaBlend[];
static int pipeNonIsoGroupCorrection[];
SplashBitmap *bitmap;
int bitmapComps;
SplashState *state;
Guchar *scanBuf;
Guchar *scanBuf2;
SplashBitmap // for transparency groups, this is the bitmap
*groupBackBitmap; // containing the alpha0/color0 values
int groupBackX, groupBackY; // offset within groupBackBitmap
SplashCoord minLineWidth;
int modXMin, modYMin, modXMax, modYMax;
SplashClipResult opClipRes;
GBool vectorAntialias;
GBool inShading;
GBool debugMode;
};
#endif