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/*
* "$Id: driver.h 343 2007-07-13 19:52:48Z mike $"
*
* Printer driver utilities header file for CUPS.
*
* Copyright 2007 by Apple Inc.
* Copyright 1993-2005 by Easy Software Products.
*
* These coded instructions, statements, and computer programs are the
* property of Apple Inc. and are protected by Federal copyright
* law. Distribution and use rights are outlined in the file "LICENSE.txt"
* which should have been included with this file. If this file is
* file is missing or damaged, see the license at "http://www.cups.org/".
*/
#ifndef _CUPS_DRIVER_H_
# define _CUPS_DRIVER_H_
# ifdef __cplusplus
extern "C" {
# endif /* __cplusplus */
/*
* Include necessary headers...
*/
# include <stdio.h>
# include <stdlib.h>
# include <time.h>
# include <math.h>
# if defined(WIN32) || defined(__EMX__)
# include <io.h>
# else
# include <unistd.h>
# include <fcntl.h>
# endif /* WIN32 || __EMX__ */
# include <cups/cups.h>
# include <cups/raster.h>
/*
* Common macros...
*/
# ifndef min
# define min(a,b) ((a) < (b) ? (a) : (b))
# define max(a,b) ((a) > (b) ? (a) : (b))
# endif /* !min */
/*
* Constants...
*/
#define CUPS_MAX_CHAN 15 /* Maximum number of color components */
#define CUPS_MAX_LUT 4095 /* Maximum LUT value */
#define CUPS_MAX_RGB 4 /* Maximum number of sRGB components */
/*
* Types/structures for the various routines.
*/
typedef struct cups_lut_s /**** Lookup Table for Dithering ****/
{
short intensity; /* Adjusted intensity */
short pixel; /* Output pixel value */
int error; /* Error from desired value */
} cups_lut_t;
typedef struct cups_dither_s /**** Dithering State ****/
{
int width; /* Width of buffer */
int row; /* Current row */
int errors[96]; /* Error values */
} cups_dither_t;
typedef struct cups_sample_s /**** Color sample point ****/
{
unsigned char rgb[3]; /* sRGB values */
unsigned char colors[CUPS_MAX_RGB]; /* Color values */
} cups_sample_t;
typedef struct cups_rgb_s /**** Color separation lookup table ****/
{
int cube_size; /* Size of color cube (2-N) on a side */
int num_channels; /* Number of colors per sample */
unsigned char ****colors; /* 4-D array of sample values */
int cube_index[256]; /* Index into cube for a given sRGB value */
int cube_mult[256]; /* Multiplier value for a given sRGB value */
int cache_init; /* Are cached values initialized? */
unsigned char black[CUPS_MAX_RGB]; /* Cached black (sRGB = 0,0,0) */
unsigned char white[CUPS_MAX_RGB]; /* Cached white (sRGB = 255,255,255) */
} cups_rgb_t;
typedef struct cups_cmyk_s /**** Simple CMYK lookup table ****/
{
unsigned char black_lut[256]; /* Black generation LUT */
unsigned char color_lut[256]; /* Color removal LUT */
int ink_limit; /* Ink limit */
int num_channels; /* Number of components */
short *channels[CUPS_MAX_CHAN];
/* Lookup tables */
} cups_cmyk_t;
/*
* Globals...
*/
extern const unsigned char
cups_srgb_lut[256];
/* sRGB gamma lookup table */
extern const unsigned char
cups_scmy_lut[256];
/* sRGB gamma lookup table (inverted) */
/*
* Prototypes...
*/
/*
* Attribute function...
*/
extern ppd_attr_t *cupsFindAttr(ppd_file_t *ppd, const char *name,
const char *colormodel,
const char *media,
const char *resolution,
char *spec, int specsize);
/*
* Byte checking functions...
*/
extern int cupsCheckBytes(const unsigned char *, int);
extern int cupsCheckValue(const unsigned char *, int,
const unsigned char);
/*
* Dithering functions...
*/
extern void cupsDitherLine(cups_dither_t *d, const cups_lut_t *lut,
const short *data, int num_channels,
unsigned char *p);
extern cups_dither_t *cupsDitherNew(int width);
extern void cupsDitherDelete(cups_dither_t *);
/*
* Lookup table functions for dithering...
*/
extern cups_lut_t *cupsLutNew(int num_vals, const float *vals);
extern void cupsLutDelete(cups_lut_t *lut);
extern cups_lut_t *cupsLutLoad(ppd_file_t *ppd,
const char *colormodel,
const char *media,
const char *resolution,
const char *ink);
/*
* Bit packing functions...
*/
extern void cupsPackHorizontal(const unsigned char *,
unsigned char *, int,
const unsigned char, const int);
extern void cupsPackHorizontal2(const unsigned char *,
unsigned char *, int, const int);
extern void cupsPackHorizontalBit(const unsigned char *,
unsigned char *, int,
const unsigned char,
const unsigned char);
extern void cupsPackVertical(const unsigned char *, unsigned char *,
int, const unsigned char, const int);
/*
* Color separation functions...
*/
extern void cupsRGBDelete(cups_rgb_t *rgb);
extern void cupsRGBDoGray(cups_rgb_t *rgb,
const unsigned char *input,
unsigned char *output, int num_pixels);
extern void cupsRGBDoRGB(cups_rgb_t *rgb,
const unsigned char *input,
unsigned char *output, int num_pixels);
extern cups_rgb_t *cupsRGBLoad(ppd_file_t *ppd,
const char *colormodel,
const char *media,
const char *resolution);
extern cups_rgb_t *cupsRGBNew(int num_samples, cups_sample_t *samples,
int cube_size, int num_channels);
/*
* CMYK separation functions...
*/
extern cups_cmyk_t *cupsCMYKNew(int num_channels);
extern void cupsCMYKDelete(cups_cmyk_t *cmyk);
extern void cupsCMYKDoBlack(const cups_cmyk_t *cmyk,
const unsigned char *input,
short *output, int num_pixels);
extern void cupsCMYKDoCMYK(const cups_cmyk_t *cmyk,
const unsigned char *input,
short *output, int num_pixels);
extern void cupsCMYKDoGray(const cups_cmyk_t *cmyk,
const unsigned char *input,
short *output, int num_pixels);
extern void cupsCMYKDoRGB(const cups_cmyk_t *cmyk,
const unsigned char *input,
short *output, int num_pixels);
extern cups_cmyk_t *cupsCMYKLoad(ppd_file_t *ppd,
const char *colormodel,
const char *media,
const char *resolution);
extern void cupsCMYKSetBlack(cups_cmyk_t *cmyk,
float lower, float upper);
extern void cupsCMYKSetCurve(cups_cmyk_t *cmyk, int channel,
int num_xypoints,
const float *xypoints);
extern void cupsCMYKSetGamma(cups_cmyk_t *cmyk, int channel,
float gamval, float density);
extern void cupsCMYKSetInkLimit(cups_cmyk_t *cmyk, float limit);
extern void cupsCMYKSetLtDk(cups_cmyk_t *cmyk, int channel,
float light, float dark);
/*
* Convenience macro for writing print data...
*/
# define cupsWritePrintData(s,n) fwrite((s), 1, (n), stdout)
# ifdef __cplusplus
}
# endif /* __cplusplus */
#endif /* !_CUPS_DRIVER_H_ */
/*
* End of "$Id: driver.h 343 2007-07-13 19:52:48Z mike $".
*/
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