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/*
Copyright 1996-2014 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <png.h>
/* JPG_IMAGE_INFO is main structure for interchange of image data */
#define JPG_UINT16 unsigned int
#define JPG_UINT32 unsigned long
#define JPG_UINT8 unsigned char
typedef struct {
int color_space; /* used color space. See JPG_ constants */
JPG_UINT8 bits_per_component; /* bits per component */
JPG_UINT32 length; /* length of file/data */
FILE *file; /* jpg file */
} JPG_IMAGE_INFO;
typedef struct {
png_structp png_ptr;
png_infop info_ptr;
} png_image_struct;
typedef struct {
integer orig_x;
integer orig_y;
integer selected_page;
integer page_box;
void *doc;
} pdf_image_struct;
typedef struct {
integer selected_page;
FILE *file;
} JBIG2_IMAGE_INFO;
typedef struct {
char *image_name;
int image_type;
int color_type;
integer width;
integer height;
integer rotate;
integer x_res;
integer y_res;
integer num_pages;
integer colorspace_ref;
integer group_ref; // if it's <=0, the page has no group
union {
pdf_image_struct *pdf;
png_image_struct png;
JPG_IMAGE_INFO *jpg;
JBIG2_IMAGE_INFO *jbig2;
} image_struct;
} image_entry;
extern image_entry *image_ptr, *image_array;
extern integer image_max;
#define IMAGE_TYPE_NONE 0
#define IMAGE_TYPE_PDF 1
#define IMAGE_TYPE_PNG 2
#define IMAGE_TYPE_JPG 3
#define IMAGE_TYPE_TIF 4
#define IMAGE_TYPE_JBIG2 5
#define IMAGE_COLOR_B 1
#define IMAGE_COLOR_C 2
#define IMAGE_COLOR_I 4
#define img_ptr(N) (image_array + (N))
#define img_name(N) (img_ptr(N)->image_name)
#define img_type(N) (img_ptr(N)->image_type)
#define img_color(N) (img_ptr(N)->color_type)
#define img_colorspace_ref(N) (img_ptr(N)->colorspace_ref)
#define img_group_ref(N) (img_ptr(N)->group_ref)
#define img_pages(N) (img_ptr(N)->num_pages)
#define img_width(N) (img_ptr(N)->width)
#define img_height(N) (img_ptr(N)->height)
#define img_rotate(N) (img_ptr(N)->rotate)
#define img_xres(N) (img_ptr(N)->x_res)
#define img_yres(N) (img_ptr(N)->y_res)
#define png_ptr(N) (img_ptr(N)->image_struct.png.png_ptr)
#define png_info(N) (img_ptr(N)->image_struct.png.info_ptr)
#define pdf_ptr(N) (img_ptr(N)->image_struct.pdf)
#define jpg_ptr(N) (img_ptr(N)->image_struct.jpg)
#define jbig2_ptr(N) (img_ptr(N)->image_struct.jbig2)
#define tif_ptr(N) (img_ptr(N)->image_struct.tif)
extern void read_png_info(integer);
extern void write_png(integer);
extern void read_jpg_info(integer);
extern void write_jpg(integer);
extern void read_jbig2_info(integer);
extern void write_jbig2(integer);
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