[thirdparty/cups.git] / filter / image-private.h

/*
 * "$Id: image-private.h 6649 2007-07-11 21:46:42Z mike $"
 *
 *   Private image library definitions for the Common UNIX Printing
 *   System (CUPS).
 *
 *   Copyright 2007 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 "raster.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 */
  long			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 */
  FILE			*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 6649 2007-07-11 21:46:42Z mike $".
 */
Commit	Line	Data
ef416fc2	1	/*
bc44d920	2	* "$Id: image-private.h 6649 2007-07-11 21:46:42Z mike $"
ef416fc2	3	*
	4	* Private image library definitions for the Common UNIX Printing
	5	* System (CUPS).
	6	*
bc44d920	7	* Copyright 2007 by Apple Inc.
b423cd4c	8	* Copyright 1993-2006 by Easy Software Products.
ef416fc2	9	*
ef416fc2	10	* These coded instructions, statements, and computer programs are the
bc44d920	11	* property of Apple Inc. and are protected by Federal copyright
	12	* law. Distribution and use rights are outlined in the file "LICENSE.txt"
	13	* which should have been included with this file. If this file is
	14	* file is missing or damaged, see the license at "http://www.cups.org/".
ef416fc2	15	*
	16	* This file is subject to the Apple OS-Developed Software exception.
	17	*/
	18
	19	#ifndef _CUPS_IMAGE_PRIVATE_H_
	20	# define _CUPS_IMAGE_PRIVATE_H_
	21
	22	/*
	23	* Include necessary headers...
	24	*/
	25
	26	# include "image.h"
b86bc4cf	27	# include "raster.h"
ef416fc2	28	# include <cups/cups.h>
	29	# include <cups/debug.h>
	30	# include <cups/string.h>
	31	# include <stdlib.h>
	32	# include <string.h>
	33	# include <unistd.h>
	34	# include <errno.h>
	35	# include <math.h>
	36
	37
	38	/*
	39	* Constants...
	40	*/
	41
	42	# define CUPS_IMAGE_MAX_WIDTH 0x07ffffff
	43	/* 2^27-1 to allow for 15-channel data */
	44	# define CUPS_IMAGE_MAX_HEIGHT 0x7fffffff
	45	/* 2^31-1 */
	46
	47	# define CUPS_TILE_SIZE 256 /* 256x256 pixel tiles */
	48	# define CUPS_TILE_MINIMUM 10 /* Minimum number of tiles */
	49
	50
	51	/*
	52	* min/max/abs macros...
	53	*/
	54
	55	# ifndef max
	56	# define max(a,b) ((a) > (b) ? (a) : (b))
	57	# endif /* !max */
	58	# ifndef min
	59	# define min(a,b) ((a) < (b) ? (a) : (b))
	60	# endif /* !min */
	61	# ifndef abs
	62	# define abs(a) ((a) < 0 ? -(a) : (a))
	63	# endif /* !abs */
	64
	65
	66	/*
	67	* Types and structures...
	68	*/
	69
b423cd4c	70	typedef enum cups_iztype_e /** Image zoom type **/
	71	{
	72	CUPS_IZOOM_FAST, /* Use nearest-neighbor sampling */
	73	CUPS_IZOOM_NORMAL, /* Use bilinear interpolation */
	74	CUPS_IZOOM_BEST /* Use bicubic interpolation */
	75	} cups_iztype_t;
	76
ef416fc2	77	struct cups_ic_s;
	78
	79	typedef struct cups_itile_s /** Image tile **/
	80	{
	81	int dirty; /* True if tile is dirty */
	82	long pos; /* Position of tile on disk (-1 if not written) */
	83	struct cups_ic_s ic; / Pixel data */
	84	} cups_itile_t;
	85
	86	typedef struct cups_ic_s /** Image tile cache **/
	87	{
	88	struct cups_ic_s prev, / Previous tile in cache */
	89	next; / Next tile in cache */
	90	cups_itile_t tile; / Tile this is attached to */
	91	cups_ib_t pixels; / Pixel data */
	92	} cups_ic_t;
	93
	94	struct cups_image_s /** Image file data **/
	95	{
	96	cups_icspace_t colorspace; /* Colorspace of image */
	97	unsigned xsize, /* Width of image in pixels */
	98	ysize, /* Height of image in pixels */
	99	xppi, /* X resolution in pixels-per-inch */
	100	yppi, /* Y resolution in pixels-per-inch */
	101	num_ics, /* Number of cached tiles */
	102	max_ics; /* Maximum number of cached tiles */
	103	cups_itile_t *tiles; / Tiles in image */
	104	cups_ic_t first, / First cached tile in image */
	105	last; / Last cached tile in image */
	106	FILE cachefile; / Tile cache file */
	107	char cachename[256]; /* Tile cache filename */
	108	};
	109
	110	struct cups_izoom_s /** Image zoom data **/
	111	{
	112	cups_image_t img; / Image to zoom */
	113	cups_iztype_t type; /* Type of zooming */
	114	unsigned xorig, /* X origin */
	115	yorig, /* Y origin */
	116	width, /* Width of input area */
	117	height, /* Height of input area */
	118	depth, /* Number of bytes per pixel */
	119	rotated, /* Non-zero if image needs to be rotated */
	120	xsize, /* Width of output image */
	121	ysize, /* Height of output image */
	122	xmax, /* Maximum input image X position */
	123	ymax, /* Maximum input image Y position */
	124	xmod, /* Threshold for Bresenheim rounding */
	125	ymod; /* ... */
	126	int xstep, /* Amount to step for each pixel along X */
	127	xincr,
	128	instep, /* Amount to step pixel pointer along X */
	129	inincr,
	130	ystep, /* Amount to step for each pixel along Y */
	131	yincr,
	132	row; /* Current row */
	133	cups_ib_t rows[2], / Horizontally scaled pixel data */
	134	in; / Unscaled input pixel data */
	135	};
	136
	137
	138	/*
	139	* Prototypes...
	140	*/
141
142	extern int _cupsImagePutCol(cups_image_t *img, int x, int y,
143	int height, const cups_ib_t *pixels);
144	extern int _cupsImagePutRow(cups_image_t *img, int x, int y,
145	int width, const cups_ib_t *pixels);
146	extern int _cupsImageReadBMP(cups_image_t img, FILE fp,
147	cups_icspace_t primary,
148	cups_icspace_t secondary,
149	int saturation, int hue,
150	const cups_ib_t *lut);
151	extern int _cupsImageReadFPX(cups_image_t img, FILE fp,
152	cups_icspace_t primary,
153	cups_icspace_t secondary,
154	int saturation, int hue,
155	const cups_ib_t *lut);
156	extern int _cupsImageReadGIF(cups_image_t img, FILE fp,
157	cups_icspace_t primary,
158	cups_icspace_t secondary,
159	int saturation, int hue,
160	const cups_ib_t *lut);
161	extern int _cupsImageReadJPEG(cups_image_t img, FILE fp,
162	cups_icspace_t primary,
163	cups_icspace_t secondary,
164	int saturation, int hue,
165	const cups_ib_t *lut);
166	extern int _cupsImageReadPIX(cups_image_t img, FILE fp,
167	cups_icspace_t primary,
168	cups_icspace_t secondary,
169	int saturation, int hue,
170	const cups_ib_t *lut);
171	extern int _cupsImageReadPNG(cups_image_t img, FILE fp,
172	cups_icspace_t primary,
173	cups_icspace_t secondary,
174	int saturation, int hue,
175	const cups_ib_t *lut);
176	extern int _cupsImageReadPNM(cups_image_t img, FILE fp,
177	cups_icspace_t primary,
178	cups_icspace_t secondary,
179	int saturation, int hue,
180	const cups_ib_t *lut);
181	extern int _cupsImageReadPhotoCD(cups_image_t img, FILE fp,
182	cups_icspace_t primary,
183	cups_icspace_t secondary,
184	int saturation, int hue,
185	const cups_ib_t *lut);
186	extern int _cupsImageReadSGI(cups_image_t img, FILE fp,
187	cups_icspace_t primary,
188	cups_icspace_t secondary,
189	int saturation, int hue,
190	const cups_ib_t *lut);
191	extern int _cupsImageReadSunRaster(cups_image_t img, FILE fp,
192	cups_icspace_t primary,
193	cups_icspace_t secondary,
194	int saturation, int hue,
195	const cups_ib_t *lut);
196	extern int _cupsImageReadTIFF(cups_image_t img, FILE fp,
197	cups_icspace_t primary,
198	cups_icspace_t secondary,
199	int saturation, int hue,
200	const cups_ib_t *lut);
b423cd4c	201	extern void _cupsImageZoomDelete(cups_izoom_t *z);
	202	extern void _cupsImageZoomFill(cups_izoom_t *z, int iy);
	203	extern cups_izoom_t _cupsImageZoomNew(cups_image_t img, int xc0, int yc0,
	204	int xc1, int yc1, int xsize,
	205	int ysize, int rotated,
	206	cups_iztype_t type);
ef416fc2	207
b86bc4cf	208	extern int _cupsRasterExecPS(cups_page_header2_t *h,
	209	int *preferred_bits,
	210	const char *code);
f7deaa1a	211	extern void _cupsRasterAddError(const char *f, ...);
f7deaa1a	212	extern void _cupsRasterClearError(void);
ef416fc2	213
	214	#endif /* !_CUPS_IMAGE_PRIVATE_H_ */
	215
	216	/*
bc44d920	217	* End of "$Id: image-private.h 6649 2007-07-11 21:46:42Z mike $".
ef416fc2	218	*/