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/*
* "$Id: image-private.h 7473 2008-04-21 17:51:58Z mike $"
*
* Private image library definitions for the Common UNIX Printing
* System (CUPS).
*
* Copyright 2007-2008 by Apple Inc.
* Copyright 1993-2006 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/".
*
* This file is subject to the Apple OS-Developed Software exception.
*/
#ifndef _CUPS_IMAGE_PRIVATE_H_
# define _CUPS_IMAGE_PRIVATE_H_
/*
* Include necessary headers...
*/
# include "image.h"
# include <cups/cups.h>
# include <cups/debug.h>
# include <cups/string.h>
# include <stdlib.h>
# include <string.h>
# include <unistd.h>
# include <errno.h>
# include <math.h>
/*
* Constants...
*/
# define CUPS_IMAGE_MAX_WIDTH 0x07ffffff
/* 2^27-1 to allow for 15-channel data */
# define CUPS_IMAGE_MAX_HEIGHT 0x7fffffff
/* 2^31-1 */
# define CUPS_TILE_SIZE 256 /* 256x256 pixel tiles */
# define CUPS_TILE_MINIMUM 10 /* Minimum number of tiles */
/*
* min/max/abs macros...
*/
# ifndef max
# define max(a,b) ((a) > (b) ? (a) : (b))
# endif /* !max */
# ifndef min
# define min(a,b) ((a) < (b) ? (a) : (b))
# endif /* !min */
# ifndef abs
# define abs(a) ((a) < 0 ? -(a) : (a))
# endif /* !abs */
/*
* Types and structures...
*/
typedef enum cups_iztype_e /**** Image zoom type ****/
{
CUPS_IZOOM_FAST, /* Use nearest-neighbor sampling */
CUPS_IZOOM_NORMAL, /* Use bilinear interpolation */
CUPS_IZOOM_BEST /* Use bicubic interpolation */
} cups_iztype_t;
struct cups_ic_s;
typedef struct cups_itile_s /**** Image tile ****/
{
int dirty; /* True if tile is dirty */
off_t pos; /* Position of tile on disk (-1 if not written) */
struct cups_ic_s *ic; /* Pixel data */
} cups_itile_t;
typedef struct cups_ic_s /**** Image tile cache ****/
{
struct cups_ic_s *prev, /* Previous tile in cache */
*next; /* Next tile in cache */
cups_itile_t *tile; /* Tile this is attached to */
cups_ib_t *pixels; /* Pixel data */
} cups_ic_t;
struct cups_image_s /**** Image file data ****/
{
cups_icspace_t colorspace; /* Colorspace of image */
unsigned xsize, /* Width of image in pixels */
ysize, /* Height of image in pixels */
xppi, /* X resolution in pixels-per-inch */
yppi, /* Y resolution in pixels-per-inch */
num_ics, /* Number of cached tiles */
max_ics; /* Maximum number of cached tiles */
cups_itile_t **tiles; /* Tiles in image */
cups_ic_t *first, /* First cached tile in image */
*last; /* Last cached tile in image */
int cachefile; /* Tile cache file */
char cachename[256]; /* Tile cache filename */
};
struct cups_izoom_s /**** Image zoom data ****/
{
cups_image_t *img; /* Image to zoom */
cups_iztype_t type; /* Type of zooming */
unsigned xorig, /* X origin */
yorig, /* Y origin */
width, /* Width of input area */
height, /* Height of input area */
depth, /* Number of bytes per pixel */
rotated, /* Non-zero if image needs to be rotated */
xsize, /* Width of output image */
ysize, /* Height of output image */
xmax, /* Maximum input image X position */
ymax, /* Maximum input image Y position */
xmod, /* Threshold for Bresenheim rounding */
ymod; /* ... */
int xstep, /* Amount to step for each pixel along X */
xincr,
instep, /* Amount to step pixel pointer along X */
inincr,
ystep, /* Amount to step for each pixel along Y */
yincr,
row; /* Current row */
cups_ib_t *rows[2], /* Horizontally scaled pixel data */
*in; /* Unscaled input pixel data */
};
/*
* Prototypes...
*/
extern int _cupsImagePutCol(cups_image_t *img, int x, int y,
int height, const cups_ib_t *pixels);
extern int _cupsImagePutRow(cups_image_t *img, int x, int y,
int width, const cups_ib_t *pixels);
extern int _cupsImageReadBMP(cups_image_t *img, FILE *fp,
cups_icspace_t primary,
cups_icspace_t secondary,
int saturation, int hue,
const cups_ib_t *lut);
extern int _cupsImageReadFPX(cups_image_t *img, FILE *fp,
cups_icspace_t primary,
cups_icspace_t secondary,
int saturation, int hue,
const cups_ib_t *lut);
extern int _cupsImageReadGIF(cups_image_t *img, FILE *fp,
cups_icspace_t primary,
cups_icspace_t secondary,
int saturation, int hue,
const cups_ib_t *lut);
extern int _cupsImageReadJPEG(cups_image_t *img, FILE *fp,
cups_icspace_t primary,
cups_icspace_t secondary,
int saturation, int hue,
const cups_ib_t *lut);
extern int _cupsImageReadPIX(cups_image_t *img, FILE *fp,
cups_icspace_t primary,
cups_icspace_t secondary,
int saturation, int hue,
const cups_ib_t *lut);
extern int _cupsImageReadPNG(cups_image_t *img, FILE *fp,
cups_icspace_t primary,
cups_icspace_t secondary,
int saturation, int hue,
const cups_ib_t *lut);
extern int _cupsImageReadPNM(cups_image_t *img, FILE *fp,
cups_icspace_t primary,
cups_icspace_t secondary,
int saturation, int hue,
const cups_ib_t *lut);
extern int _cupsImageReadPhotoCD(cups_image_t *img, FILE *fp,
cups_icspace_t primary,
cups_icspace_t secondary,
int saturation, int hue,
const cups_ib_t *lut);
extern int _cupsImageReadSGI(cups_image_t *img, FILE *fp,
cups_icspace_t primary,
cups_icspace_t secondary,
int saturation, int hue,
const cups_ib_t *lut);
extern int _cupsImageReadSunRaster(cups_image_t *img, FILE *fp,
cups_icspace_t primary,
cups_icspace_t secondary,
int saturation, int hue,
const cups_ib_t *lut);
extern int _cupsImageReadTIFF(cups_image_t *img, FILE *fp,
cups_icspace_t primary,
cups_icspace_t secondary,
int saturation, int hue,
const cups_ib_t *lut);
extern void _cupsImageZoomDelete(cups_izoom_t *z);
extern void _cupsImageZoomFill(cups_izoom_t *z, int iy);
extern cups_izoom_t *_cupsImageZoomNew(cups_image_t *img, int xc0, int yc0,
int xc1, int yc1, int xsize,
int ysize, int rotated,
cups_iztype_t type);
extern int _cupsRasterExecPS(cups_page_header2_t *h,
int *preferred_bits,
const char *code);
extern void _cupsRasterAddError(const char *f, ...);
extern void _cupsRasterClearError(void);
#endif /* !_CUPS_IMAGE_PRIVATE_H_ */
/*
* End of "$Id: image-private.h 7473 2008-04-21 17:51:58Z mike $".
*/
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