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/*
Copyright (c) 1996-2002 Han The Thanh, <thanh@pdftex.org>
This file is part of pdfTeX.
pdfTeX is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
pdfTeX is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdfTeX; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
$Id: image.h 1125 2008-03-25 19:36:52Z hhenkel $
*/
#ifndef IMAGE_H
# define IMAGE_H
# include <../libpng/png.h>
# define JPG_UINT16 unsigned int
# define JPG_UINT32 unsigned long
# define JPG_UINT8 unsigned char
# define IMAGE_COLOR_B 1
# define IMAGE_COLOR_C 2
# define IMAGE_COLOR_I 4
extern integer zround(double); /* from zround.c */
# define bp2int(p) zround(p * (one_hundred_bp / 100.0))
# define TYPE_IMG "image"
# define TYPE_IMG_DICT "image-dict"
# define scaled integer
/**********************************************************************/
typedef struct {
png_structp png_ptr;
png_infop info_ptr;
} png_img_struct;
typedef struct {
int color_space; /* used color space. See JPG_ constants */
JPG_UINT32 length; /* length of file/data */
} jpg_img_struct;
typedef struct { /* currently unused */
} jb2_img_struct;
typedef enum { DICT_NEW, /* fresh dictionary */
DICT_FILESCANNED, /* image file scanned */
DICT_REFERED, /* pdf_refximage_node in node list --> read-only dict */
DICT_OUTIMG, /* /Im* appears in pagestream */
DICT_SCHEDULED, /* image dict scheduled for writing */
DICT_WRITTEN /* image dict written to file */
} dict_state;
typedef enum { IMAGE_TYPE_NONE, IMAGE_TYPE_PDF, IMAGE_TYPE_PNG, IMAGE_TYPE_JPG,
IMAGE_TYPE_JBIG2, IMAGE_TYPE_SENTINEL
} imgtype_e;
typedef enum { IMG_KEEPOPEN, IMG_CLOSEINBETWEEN } img_readtype_e;
typedef enum { PDF_BOX_SPEC_NONE, PDF_BOX_SPEC_MEDIA, PDF_BOX_SPEC_CROP,
PDF_BOX_SPEC_BLEED, PDF_BOX_SPEC_TRIM, PDF_BOX_SPEC_ART,
PDF_BOX_SPEC_SENTINEL
} pdfboxspec_e;
/**********************************************************************/
typedef struct {
integer objnum;
integer index; /* /Im1, /Im2, ... */
integer x_size; /* dimensions in pixel counts as in JPG/PNG/JBIG2 file */
integer y_size;
integer x_orig; /* origin in sp for PDF files */
integer y_orig;
integer x_res; /* pixel resolution as in JPG/PNG/JBIG2 file */
integer y_res;
integer colorspace; /* number of /ColorSpace object */
integer total_pages;
integer page_num; /* requested page (by number) */
char *pagename; /* requested page (by name) */
char *filename; /* requested raw file name */
char *filepath; /* full file path after kpathsea */
char *attr; /* additional image dict entries */
FILE *file;
imgtype_e image_type;
int color_space; /* used color space. See JPG_ constants */
int color_depth; /* color depth */
pdfboxspec_e page_box_spec; /* PDF page box spec.: media/crop/bleed/trim/art */
dict_state state;
union {
png_img_struct *png;
jpg_img_struct *jpg;
jb2_img_struct *jb2;
} img_struct;
} image_dict;
# define img_objnum(N) ((N)->objnum)
# define img_index(N) ((N)->index)
# define img_xsize(N) ((N)->x_size)
# define img_ysize(N) ((N)->y_size)
# define img_xorig(N) ((N)->x_orig)
# define img_yorig(N) ((N)->y_orig)
# define img_xres(N) ((N)->x_res)
# define img_yres(N) ((N)->y_res)
# define img_colorspace(N) ((N)->colorspace)
# define img_totalpages(N) ((N)->total_pages)
# define img_pagenum(N) ((N)->page_num)
# define img_pagename(N) ((N)->pagename)
# define img_filename(N) ((N)->filename)
# define img_filepath(N) ((N)->filepath)
# define img_attr(N) ((N)->attr)
# define img_file(N) ((N)->file)
# define img_type(N) ((N)->image_type)
# define img_color(N) ((N)->color_space)
# define img_colordepth(N) ((N)->color_depth)
# define img_pagebox(N) ((N)->page_box_spec)
# define img_state(N) ((N)->state)
# define img_png_ptr(N) ((N)->img_struct.png)
# define img_png_png_ptr(N) ((N)->img_struct.png->png_ptr)
# define img_png_info_ptr(N) ((N)->img_struct.png->info_ptr)
# define img_jpg_ptr(N) ((N)->img_struct.jpg)
# define img_jpg_color(N) ((N)->img_struct.jpg->color_space)
# define img_jb2_ptr(N) ((N)->img_struct.jb2)
/**********************************************************************/
typedef struct {
integer width; /* requested/actual TeX dimensions */
integer height;
integer depth;
integer transform;
integer flags;
image_dict *dict;
int dict_ref; /* luaL_ref() reference */
} image;
# define img_width(N) ((N)->width)
# define img_height(N) ((N)->height)
# define img_depth(N) ((N)->depth)
# define img_transform(N) ((N)->transform)
# define img_flags(N) ((N)->flags)
# define img_dict(N) ((N)->dict)
# define img_dictref(N) ((N)->dict_ref)
# define F_FLAG_SCALED 0x01
# define F_FLAG_REFERED 0x02
# define img_flags(N) ((N)->flags)
# define img_set_scaled(N) (img_flags(N) |= F_FLAG_SCALED)
# define img_set_refered(N) (img_flags(N) |= F_FLAG_REFERED)
# define img_unset_scaled(N) (img_flags(N) &= ~F_FLAG_SCALED)
# define img_unset_refered(N) (img_flags(N) &= ~F_FLAG_REFERED)
# define img_is_scaled(N) ((img_flags(N) & F_FLAG_SCALED) != 0)
# define img_is_refered(N) ((img_flags(N) & F_FLAG_REFERED) != 0)
# define set_wd_running(N) (img_width(N) = null_flag)
# define set_ht_running(N) (img_height(N) = null_flag)
# define set_dp_running(N) (img_depth(N) = null_flag)
# define is_wd_running(N) (img_width(N) == null_flag)
# define is_ht_running(N) (img_height(N) == null_flag)
# define is_dp_running(N) (img_depth(N) == null_flag)
/**********************************************************************/
/* writeimg.c */
image *new_image();
image_dict *new_image_dict();
void init_image(image *);
void init_image_dict(image_dict *);
void scale_img(image *);
integer img_to_array(image *);
void delete_image(image *);
void free_image_dict(image_dict * p);
void read_img(image_dict *, integer, integer);
/* writepng.c */
# ifndef boolean /* TODO: from where to get the original definition? */
# define boolean int
# endif
void read_png_info(image_dict *, img_readtype_e);
void read_jpg_info(image_dict *, img_readtype_e);
void read_jbig2_info(image_dict *);
void read_pdf_info(image_dict *, integer, integer);
void write_img(image_dict *);
void write_png(image_dict *);
void write_jpg(image_dict *);
void write_jbig2(image_dict *);
void write_epdf(image_dict *);
/* pdftoepdf.cc */
void unrefPdfDocument(char *);
#endif
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