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

/*
 * "$Id: image-private.h 5191 2006-02-27 02:47:56Z mike $"
 *
 *   Private image library definitions for the Common UNIX Printing
 *   System (CUPS).
 *
 *   Copyright 1993-2006 by Easy Software Products.
 *
 *   These coded instructions, statements, and computer programs are the
 *   property of Easy Software Products 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 missing or damaged please contact Easy Software Products
 *   at:
 *
 *       Attn: CUPS Licensing Information
 *       Easy Software Products
 *       44141 Airport View Drive, Suite 204
 *       Hollywood, Maryland 20636 USA
 *
 *       Voice: (301) 373-9600
 *       EMail: cups-info@cups.org
 *         WWW: 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 */
  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);


#endif /* !_CUPS_IMAGE_PRIVATE_H_ */

/*
 * End of "$Id: image-private.h 5191 2006-02-27 02:47:56Z mike $".
 */
Commit	Line	Data
ef416fc2	1	/*
f7faf1f5	2	* "$Id: image-private.h 5191 2006-02-27 02:47:56Z mike $"
ef416fc2	3	*
	4	* Private image library definitions for the Common UNIX Printing
	5	* System (CUPS).
	6	*
b423cd4c	7	* Copyright 1993-2006 by Easy Software Products.
ef416fc2	8	*
	9	* These coded instructions, statements, and computer programs are the
	10	* property of Easy Software Products and are protected by Federal
	11	* copyright law. Distribution and use rights are outlined in the file
	12	* "LICENSE.txt" which should have been included with this file. If this
	13	* file is missing or damaged please contact Easy Software Products
	14	* at:
	15	*
	16	* Attn: CUPS Licensing Information
	17	* Easy Software Products
	18	* 44141 Airport View Drive, Suite 204
	19	* Hollywood, Maryland 20636 USA
	20	*
	21	* Voice: (301) 373-9600
	22	* EMail: cups-info@cups.org
	23	* WWW: http://www.cups.org
	24	*
	25	* This file is subject to the Apple OS-Developed Software exception.
	26	*/
	27
	28	#ifndef _CUPS_IMAGE_PRIVATE_H_
	29	# define _CUPS_IMAGE_PRIVATE_H_
	30
	31	/*
	32	* Include necessary headers...
	33	*/
	34
	35	# include "image.h"
	36	# include <cups/cups.h>
	37	# include <cups/debug.h>
	38	# include <cups/string.h>
	39	# include <stdlib.h>
	40	# include <string.h>
	41	# include <unistd.h>
	42	# include <errno.h>
	43	# include <math.h>
	44
	45
	46	/*
	47	* Constants...
	48	*/
	49
	50	# define CUPS_IMAGE_MAX_WIDTH 0x07ffffff
	51	/* 2^27-1 to allow for 15-channel data */
	52	# define CUPS_IMAGE_MAX_HEIGHT 0x7fffffff
	53	/* 2^31-1 */
	54
	55	# define CUPS_TILE_SIZE 256 /* 256x256 pixel tiles */
	56	# define CUPS_TILE_MINIMUM 10 /* Minimum number of tiles */
	57
	58
	59	/*
	60	* min/max/abs macros...
	61	*/
	62
	63	# ifndef max
	64	# define max(a,b) ((a) > (b) ? (a) : (b))
	65	# endif /* !max */
	66	# ifndef min
	67	# define min(a,b) ((a) < (b) ? (a) : (b))
	68	# endif /* !min */
	69	# ifndef abs
	70	# define abs(a) ((a) < 0 ? -(a) : (a))
	71	# endif /* !abs */
72
73
74	/*
75	* Types and structures...
76	*/
77
b423cd4c	78	typedef enum cups_iztype_e /** Image zoom type **/
	79	{
	80	CUPS_IZOOM_FAST, /* Use nearest-neighbor sampling */
	81	CUPS_IZOOM_NORMAL, /* Use bilinear interpolation */
	82	CUPS_IZOOM_BEST /* Use bicubic interpolation */
	83	} cups_iztype_t;
	84
ef416fc2	85	struct cups_ic_s;
	86
	87	typedef struct cups_itile_s /** Image tile **/
	88	{
	89	int dirty; /* True if tile is dirty */
	90	long pos; /* Position of tile on disk (-1 if not written) */
	91	struct cups_ic_s ic; / Pixel data */
	92	} cups_itile_t;
	93
	94	typedef struct cups_ic_s /** Image tile cache **/
	95	{
	96	struct cups_ic_s prev, / Previous tile in cache */
	97	next; / Next tile in cache */
	98	cups_itile_t tile; / Tile this is attached to */
	99	cups_ib_t pixels; / Pixel data */
	100	} cups_ic_t;
	101
	102	struct cups_image_s /** Image file data **/
	103	{
	104	cups_icspace_t colorspace; /* Colorspace of image */
	105	unsigned xsize, /* Width of image in pixels */
	106	ysize, /* Height of image in pixels */
	107	xppi, /* X resolution in pixels-per-inch */
	108	yppi, /* Y resolution in pixels-per-inch */
	109	num_ics, /* Number of cached tiles */
	110	max_ics; /* Maximum number of cached tiles */
	111	cups_itile_t *tiles; / Tiles in image */
	112	cups_ic_t first, / First cached tile in image */
	113	last; / Last cached tile in image */
	114	FILE cachefile; / Tile cache file */
	115	char cachename[256]; /* Tile cache filename */
	116	};
	117
	118	struct cups_izoom_s /** Image zoom data **/
	119	{
	120	cups_image_t img; / Image to zoom */
	121	cups_iztype_t type; /* Type of zooming */
	122	unsigned xorig, /* X origin */
	123	yorig, /* Y origin */
	124	width, /* Width of input area */
	125	height, /* Height of input area */
	126	depth, /* Number of bytes per pixel */
	127	rotated, /* Non-zero if image needs to be rotated */
	128	xsize, /* Width of output image */
	129	ysize, /* Height of output image */
	130	xmax, /* Maximum input image X position */
	131	ymax, /* Maximum input image Y position */
	132	xmod, /* Threshold for Bresenheim rounding */
	133	ymod; /* ... */
	134	int xstep, /* Amount to step for each pixel along X */
	135	xincr,
	136	instep, /* Amount to step pixel pointer along X */
	137	inincr,
	138	ystep, /* Amount to step for each pixel along Y */
	139	yincr,
	140	row; /* Current row */
	141	cups_ib_t rows[2], / Horizontally scaled pixel data */
	142	in; / Unscaled input pixel data */
	143	};
	144
	145
	146	/*
	147	* Prototypes...
	148	*/
149
150	extern int _cupsImagePutCol(cups_image_t *img, int x, int y,
151	int height, const cups_ib_t *pixels);
152	extern int _cupsImagePutRow(cups_image_t *img, int x, int y,
153	int width, const cups_ib_t *pixels);
154	extern int _cupsImageReadBMP(cups_image_t img, FILE fp,
155	cups_icspace_t primary,
156	cups_icspace_t secondary,
157	int saturation, int hue,
158	const cups_ib_t *lut);
159	extern int _cupsImageReadFPX(cups_image_t img, FILE fp,
160	cups_icspace_t primary,
161	cups_icspace_t secondary,
162	int saturation, int hue,
163	const cups_ib_t *lut);
164	extern int _cupsImageReadGIF(cups_image_t img, FILE fp,
165	cups_icspace_t primary,
166	cups_icspace_t secondary,
167	int saturation, int hue,
168	const cups_ib_t *lut);
169	extern int _cupsImageReadJPEG(cups_image_t img, FILE fp,
170	cups_icspace_t primary,
171	cups_icspace_t secondary,
172	int saturation, int hue,
173	const cups_ib_t *lut);
174	extern int _cupsImageReadPIX(cups_image_t img, FILE fp,
175	cups_icspace_t primary,
176	cups_icspace_t secondary,
177	int saturation, int hue,
178	const cups_ib_t *lut);
179	extern int _cupsImageReadPNG(cups_image_t img, FILE fp,
180	cups_icspace_t primary,
181	cups_icspace_t secondary,
182	int saturation, int hue,
183	const cups_ib_t *lut);
184	extern int _cupsImageReadPNM(cups_image_t img, FILE fp,
185	cups_icspace_t primary,
186	cups_icspace_t secondary,
187	int saturation, int hue,
188	const cups_ib_t *lut);
189	extern int _cupsImageReadPhotoCD(cups_image_t img, FILE fp,
190	cups_icspace_t primary,
191	cups_icspace_t secondary,
192	int saturation, int hue,
193	const cups_ib_t *lut);
194	extern int _cupsImageReadSGI(cups_image_t img, FILE fp,
195	cups_icspace_t primary,
196	cups_icspace_t secondary,
197	int saturation, int hue,
198	const cups_ib_t *lut);
199	extern int _cupsImageReadSunRaster(cups_image_t img, FILE fp,
200	cups_icspace_t primary,
201	cups_icspace_t secondary,
202	int saturation, int hue,
203	const cups_ib_t *lut);
204	extern int _cupsImageReadTIFF(cups_image_t img, FILE fp,
205	cups_icspace_t primary,
206	cups_icspace_t secondary,
207	int saturation, int hue,
208	const cups_ib_t *lut);
b423cd4c	209	extern void _cupsImageZoomDelete(cups_izoom_t *z);
	210	extern void _cupsImageZoomFill(cups_izoom_t *z, int iy);
	211	extern cups_izoom_t _cupsImageZoomNew(cups_image_t img, int xc0, int yc0,
	212	int xc1, int yc1, int xsize,
	213	int ysize, int rotated,
	214	cups_iztype_t type);
ef416fc2	215
	216
	217	#endif /* !_CUPS_IMAGE_PRIVATE_H_ */
	218
	219	/*
f7faf1f5	220	* End of "$Id: image-private.h 5191 2006-02-27 02:47:56Z mike $".
ef416fc2	221	*/