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#ifndef MUPDF_PDF_XREF_H
#define MUPDF_PDF_XREF_H
/*
pdf_create_object: Allocate a slot in the xref table and return a fresh unused object number.
*/
int pdf_create_object(pdf_document *doc);
/*
pdf_delete_object: Remove object from xref table, marking the slot as free.
*/
void pdf_delete_object(pdf_document *doc, int num);
/*
pdf_update_object: Replace object in xref table with the passed in object.
*/
void pdf_update_object(pdf_document *doc, int num, pdf_obj *obj);
/*
pdf_update_stream: Replace stream contents for object in xref table with the passed in buffer.
The buffer contents must match the /Filter setting.
If storing uncompressed data, make sure to delete the /Filter key from
the stream dictionary. If storing deflated data, make sure to set the
/Filter value to /FlateDecode.
*/
void pdf_update_stream(pdf_document *doc, int num, fz_buffer *buf);
/*
* xref and object / stream api
*/
typedef struct pdf_xref_entry_s pdf_xref_entry;
struct pdf_xref_entry_s
{
char type; /* 0=unset (f)ree i(n)use (o)bjstm */
unsigned char flags; /* bit 0 = marked */
unsigned short gen; /* generation / objstm index */
int ofs; /* file offset / objstm object number */
int stm_ofs; /* on-disk stream */
fz_buffer *stm_buf; /* in-memory stream (for updated objects) */
pdf_obj *obj; /* stored/cached object */
};
enum
{
PDF_OBJ_FLAG_MARK = 1,
};
typedef struct pdf_xref_subsec_s pdf_xref_subsec;
struct pdf_xref_subsec_s
{
pdf_xref_subsec *next;
int len;
int start;
pdf_xref_entry *table;
};
struct pdf_xref_s
{
int num_objects;
pdf_xref_subsec *subsec;
pdf_obj *trailer;
pdf_obj *pre_repair_trailer;
};
pdf_xref_entry *pdf_cache_object(pdf_document *doc, int num, int gen);
int pdf_count_objects(pdf_document *doc);
pdf_obj *pdf_resolve_indirect(pdf_obj *ref);
pdf_obj *pdf_load_object(pdf_document *doc, int num, int gen);
fz_buffer *pdf_load_raw_stream(pdf_document *doc, int num, int gen);
fz_buffer *pdf_load_stream(pdf_document *doc, int num, int gen);
fz_stream *pdf_open_raw_stream(pdf_document *doc, int num, int gen);
fz_stream *pdf_open_stream(pdf_document *doc, int num, int gen);
fz_stream *pdf_open_inline_stream(pdf_document *doc, pdf_obj *stmobj, int length, fz_stream *chain, fz_compression_params *params);
fz_compressed_buffer *pdf_load_compressed_stream(pdf_document *doc, int num, int gen);
void pdf_load_compressed_inline_image(pdf_document *doc, pdf_obj *dict, int length, fz_stream *cstm, int indexed, fz_image *image);
fz_stream *pdf_open_stream_with_offset(pdf_document *doc, int num, int gen, pdf_obj *dict, int stm_ofs);
fz_stream *pdf_open_compressed_stream(fz_context *ctx, fz_compressed_buffer *);
fz_stream *pdf_open_contents_stream(pdf_document *doc, pdf_obj *obj);
fz_buffer *pdf_load_raw_renumbered_stream(pdf_document *doc, int num, int gen, int orig_num, int orig_gen);
fz_buffer *pdf_load_renumbered_stream(pdf_document *doc, int num, int gen, int orig_num, int orig_gen, int *truncated);
fz_stream *pdf_open_raw_renumbered_stream(pdf_document *doc, int num, int gen, int orig_num, int orig_gen);
pdf_obj *pdf_trailer(pdf_document *doc);
void pdf_set_populating_xref_trailer(pdf_document *doc, pdf_obj *trailer);
int pdf_xref_len(pdf_document *doc);
pdf_xref_entry *pdf_get_populating_xref_entry(pdf_document *doc, int i);
pdf_xref_entry *pdf_get_xref_entry(pdf_document *doc, int i);
void pdf_replace_xref(pdf_document *doc, pdf_xref_entry *entries, int n);
void pdf_xref_ensure_incremental_object(pdf_document *doc, int num);
int pdf_xref_is_incremental(pdf_document *doc, int num);
void pdf_repair_xref(pdf_document *doc, pdf_lexbuf *buf);
void pdf_repair_obj_stms(pdf_document *doc);
pdf_obj *pdf_new_ref(pdf_document *doc, pdf_obj *obj);
void pdf_ensure_solid_xref(pdf_document *doc, int num);
void pdf_mark_xref(pdf_document *doc);
void pdf_clear_xref(pdf_document *doc);
void pdf_clear_xref_to_mark(pdf_document *doc);
int pdf_repair_obj(pdf_document *doc, pdf_lexbuf *buf, int *stmofsp, int *stmlenp, pdf_obj **encrypt, pdf_obj **id, pdf_obj **page, int *tmpofs);
pdf_obj *pdf_progressive_advance(pdf_document *doc, int pagenum);
void pdf_print_xref(pdf_document *);
#endif
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