splash/SplashTypes.h

//========================================================================
//
// SplashTypes.h
//
//========================================================================

//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2006, 2010, 2019, 2020 Albert Astals Cid <aacid@kde.org>
// Copyright (C) 2008 Tomas Are Haavet <tomasare@gmail.com>
// Copyright (C) 2009, 2011-2013 Thomas Freitag <Thomas.Freitag@alfa.de>
// Copyright (C) 2009 Stefan Thomas <thomas@eload24.com>
// Copyright (C) 2010 William Bader <williambader@hotmail.com>
// Copyright (C) 2017 Adrian Johnson <ajohnson@redneon.com>
// Copyright (C) 2018 Stefan Brüns <stefan.bruens@rwth-aachen.de>
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================

#ifndef SPLASHTYPES_H
#define SPLASHTYPES_H

#include <cstddef>

//------------------------------------------------------------------------
// coordinates
//------------------------------------------------------------------------

#if defined(USE_FLOAT)
typedef float SplashCoord;
#else
typedef double SplashCoord;
#endif

//------------------------------------------------------------------------
// antialiasing
//------------------------------------------------------------------------

#define splashAASize 4

#ifndef SPOT_NCOMPS
#    define SPOT_NCOMPS 4
#endif

//------------------------------------------------------------------------
// colors
//------------------------------------------------------------------------

enum SplashColorMode
{
    splashModeMono1, // 1 bit per component, 8 pixels per byte,
                     //   MSbit is on the left
    splashModeMono8, // 1 byte per component, 1 byte per pixel
    splashModeRGB8, // 1 byte per component, 3 bytes per pixel:
                    //   RGBRGB...
    splashModeBGR8, // 1 byte per component, 3 bytes per pixel:
                    //   BGRBGR...
    splashModeXBGR8, // 1 byte per component, 4 bytes per pixel:
                     //   XBGRXBGR...
    splashModeCMYK8, // 1 byte per component, 4 bytes per pixel:
                     //   CMYKCMYK...
    splashModeDeviceN8 // 1 byte per component,
                       // 4 bytes + n bytes spot colors per pixel:
                       // CMYKSSSSCMYKSSSS...
};

enum SplashThinLineMode
{
    splashThinLineDefault, // if SA on: draw solid if requested line width, transformed into
                           // device space, is less than half a pixel and a shaped line else
    splashThinLineSolid, // draw line solid at least with 1 pixel
    splashThinLineShape // draw line shaped at least with 1 pixel
};
// number of components in each color mode
// (defined in SplashState.cc)
extern int splashColorModeNComps[];

// max number of components in any SplashColor
constexpr std::size_t splashMaxColorComps = SPOT_NCOMPS + 4;

typedef unsigned char SplashColor[splashMaxColorComps];
typedef unsigned char *SplashColorPtr;
typedef const unsigned char *SplashColorConstPtr;

// RGB8
static inline unsigned char splashRGB8R(SplashColorPtr rgb8)
{
    return rgb8[0];
}
static inline unsigned char splashRGB8G(SplashColorPtr rgb8)
{
    return rgb8[1];
}
static inline unsigned char splashRGB8B(SplashColorPtr rgb8)
{
    return rgb8[2];
}

// BGR8
static inline unsigned char splashBGR8R(SplashColorPtr bgr8)
{
    return bgr8[2];
}
static inline unsigned char splashBGR8G(SplashColorPtr bgr8)
{
    return bgr8[1];
}
static inline unsigned char splashBGR8B(SplashColorPtr bgr8)
{
    return bgr8[0];
}

// CMYK8
static inline unsigned char splashCMYK8C(SplashColorPtr cmyk8)
{
    return cmyk8[0];
}
static inline unsigned char splashCMYK8M(SplashColorPtr cmyk8)
{
    return cmyk8[1];
}
static inline unsigned char splashCMYK8Y(SplashColorPtr cmyk8)
{
    return cmyk8[2];
}
static inline unsigned char splashCMYK8K(SplashColorPtr cmyk8)
{
    return cmyk8[3];
}

// DEVICEN8
static inline unsigned char splashDeviceN8C(SplashColorPtr deviceN8)
{
    return deviceN8[0];
}
static inline unsigned char splashDeviceN8M(SplashColorPtr deviceN8)
{
    return deviceN8[1];
}
static inline unsigned char splashDeviceN8Y(SplashColorPtr deviceN8)
{
    return deviceN8[2];
}
static inline unsigned char splashDeviceN8K(SplashColorPtr deviceN8)
{
    return deviceN8[3];
}
static inline unsigned char splashDeviceN8S(SplashColorPtr deviceN8, int nSpot)
{
    return deviceN8[4 + nSpot];
}

static inline void splashClearColor(SplashColorPtr dest)
{
    dest[0] = 0;
    dest[1] = 0;
    dest[2] = 0;
    dest[3] = 0;
    for (int i = 4; i < SPOT_NCOMPS + 4; i++) {
        dest[i] = 0;
    }
}

static inline void splashColorCopy(SplashColorPtr dest, SplashColorConstPtr src)
{
    dest[0] = src[0];
    dest[1] = src[1];
    dest[2] = src[2];
    dest[3] = src[3];
    for (int i = 4; i < SPOT_NCOMPS + 4; i++) {
        dest[i] = src[i];
    }
}

static inline bool splashColorEqual(SplashColorConstPtr dest, SplashColorConstPtr src)
{
    for (int i = 0; i < SPOT_NCOMPS + 4; i++) {
        if (dest[i] != src[i]) {
            return false;
        }
    }
    return true;
}

static inline void splashColorXor(SplashColorPtr dest, SplashColorConstPtr src)
{
    dest[0] ^= src[0];
    dest[1] ^= src[1];
    dest[2] ^= src[2];
    dest[3] ^= src[3];
    for (int i = 4; i < SPOT_NCOMPS + 4; i++) {
        dest[i] ^= src[i];
    }
}

//------------------------------------------------------------------------
// blend functions
//------------------------------------------------------------------------

typedef void (*SplashBlendFunc)(SplashColorPtr src, SplashColorPtr dest, SplashColorPtr blend, SplashColorMode cm);

//------------------------------------------------------------------------
// screen parameters
//------------------------------------------------------------------------

enum SplashScreenType
{
    splashScreenDispersed,
    splashScreenClustered,
    splashScreenStochasticClustered
};

struct SplashScreenParams
{
    SplashScreenType type;
    int size;
    int dotRadius;
    SplashCoord gamma;
    SplashCoord blackThreshold;
    SplashCoord whiteThreshold;
};

//------------------------------------------------------------------------
// error results
//------------------------------------------------------------------------

typedef int SplashError;

//------------------------------------------------------------------------
// image file formats
//------------------------------------------------------------------------

enum SplashImageFileFormat
{
    splashFormatJpeg,
    splashFormatPng,
    splashFormatTiff,
    splashFormatJpegCMYK
};

#endif