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/*
* Copyright (c) 2020-2022, yzrh <yzrh@noema.org>
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdint.h>
#include <stdio.h>
#define ADDRESS_HEAD 0x0000
#define ADDRESS_CAJ_PAGE 0x0010
#define ADDRESS_CAJ_OUTLINE 0x0110
#define ADDRESS_CAJ_BODY 0x0014
#define ADDRESS_HN_PAGE 0x0090
#define ADDRESS_HN_OUTLINE 0x0158
#define ADDRESS_C8_PAGE 0x0008
#define ADDRESS_KDH_BODY 0x00fe
#define KEY_KDH "FZHMEI"
#define KEY_KDH_LENGTH 6
typedef struct _file_stat_t {
char type[4];
int32_t page;
int32_t outline;
} file_stat_t;
typedef struct _object_outline_t {
char title[256]; /* Starting at file_stat_t->outline + 4 */
char hierarchy[24];
char page[12];
char text[12];
int32_t depth;
struct _object_outline_t *next;
} object_outline_t;
typedef struct _object_outline_tree_t {
int id;
struct _object_outline_t *item;
struct _object_outline_tree_t *up;
struct _object_outline_tree_t *left;
struct _object_outline_tree_t *right;
} object_outline_tree_t;
typedef enum _hn_code {
JBIG, /* Inverted */
DCT_0,
DCT_1, /* Inverted */
JBIG2,
JPX
} hn_code;
typedef struct _hn_image_t {
int32_t format; /* hn_code */
int32_t address;
int32_t size;
uint16_t x;
uint16_t y;
uint16_t w;
uint16_t h;
char *image;
} hn_image_t;
typedef struct _object_hn_t {
int32_t address; /* Starting at end of object_outline_t */
int32_t text_size;
int16_t image_length;
int16_t page;
int32_t unknown; /* TODO: what is it? */
int32_t address_next;
char *text;
struct _hn_image_t *image_data;
struct _object_hn_t *next;
} object_hn_t;
typedef struct _cnki_t {
int stat;
int size_buf;
FILE *fp_i;
FILE *fp_o;
file_stat_t *file_stat;
object_outline_t *object_outline;
object_hn_t *object_hn;
} cnki_t;
/* cnki_pdf.c */
int cnki_pdf(cnki_t **param);
int cnki_pdf_hn(cnki_t **param);
/* cnki_outline_tree.c */
int cnki_outline_tree(object_outline_tree_t **outline_tree,
object_outline_t **outline, int *ids);
/* cnki_zlib.c */
int cnki_zlib(char **dst, int *dst_size,
const char * restrict src, int src_size);
/* cnki_jbig.c */
int cnki_jbig(char **bitmap, int *bitmap_size,
int *bitmap_width, int *bitmap_height,
const char * restrict jbig, int jbig_size);
/* cnki_jbig2.c */
int cnki_jbig2(char **bitmap, int *bitmap_size,
int *bitmap_width, int *bitmap_height,
const char * restrict jbig, int jbig_size);
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