Initial import

1 files changed, 253 insertions, 0 deletions

diff --git a/include/mupdf.h b/include/mupdf.h
new file mode 100644
index 00000000..ca4a267b
--- /dev/null
+++ b/include/mupdf.h
@@ -0,0 +1,253 @@
+#ifdef _MUPDF_H_
+#error "mupdf.h must only be included once"
+#endif
+#define _MUPDF_H_
+
+#ifndef _FITZ_H_
+#error "fitz.h must be included before mupdf.h"
+#endif
+
+/*
+ * tokenizer and low-level object parser
+ */
+
+enum
+{
+	PDF_TERROR, PDF_TEOF,
+	PDF_TOARRAY, PDF_TCARRAY,
+	PDF_TODICT, PDF_TCDICT,
+	PDF_TNAME, PDF_TINT, PDF_TREAL, PDF_TSTRING, PDF_TKEYWORD,
+	PDF_TR, PDF_TTRUE, PDF_TFALSE, PDF_TNULL,
+	PDF_TOBJ, PDF_TENDOBJ,
+	PDF_TSTREAM, PDF_TENDSTREAM,
+	PDF_TXREF, PDF_TTRAILER, PDF_TSTARTXREF,
+	PDF_NTOKENS
+};
+
+/* lex.c */
+int pdf_lex(fz_file *f, unsigned char *buf, int n, int *len);
+
+/* parse.c */
+fz_error *pdf_parsearray(fz_obj **op, fz_file *f, unsigned char *buf, int cap);
+fz_error *pdf_parsedict(fz_obj **op, fz_file *f, unsigned char *buf, int cap);
+fz_error *pdf_parsestmobj(fz_obj **op, fz_file *f, unsigned char *buf, int cap);
+fz_error *pdf_parseindobj(fz_obj **op, fz_file *f, unsigned char *buf, int cap, int *oid, int *gid, int *stmofsj);
+
+/*
+ * xref and syntax object api
+ */
+
+typedef struct pdf_xref_s pdf_xref;
+typedef struct pdf_xrefentry_s pdf_xrefentry;
+typedef struct pdf_crypt_s pdf_crypt;
+
+struct pdf_xref_s
+{
+	float version;
+	pdf_crypt *crypt;
+	fz_file *file;
+	int size;
+	int capacity;
+	pdf_xrefentry *table;
+	fz_obj *trailer;
+	int startxref;
+	fz_hashtable *store;
+};
+
+struct pdf_xrefentry_s
+{
+	unsigned int ofs;	/* file offset / objstm object number */
+	unsigned short gen;	/* generation / objstm index */
+	char type;			/* 0=unset (f)ree i(n)use (o)bjstm (d)elete (a)dd */
+	char mark;			/* for garbage collection etc */
+};
+
+struct pdf_crypt_s
+{
+	unsigned char o[32];
+	unsigned char u[32];
+	unsigned int p;
+	int r;
+	int n;
+
+	fz_obj *id;
+
+	unsigned char key[16];
+	int keylen;
+};
+
+/* stream.c */
+fz_error *pdf_buildfilter(fz_filter**, pdf_xref*, fz_obj *stm, int oid, int gid);
+fz_error *pdf_openstream0(pdf_xref*, fz_obj *stmobj, int oid, int gid, int ofs);
+fz_error *pdf_openstream(pdf_xref*, fz_obj *stmref);
+void pdf_closestream(pdf_xref*);
+fz_error *pdf_readstream(unsigned char **bufp, int *lenp, pdf_xref*, fz_obj *stmref);
+
+/* crypt.c */
+fz_error *pdf_newdecrypt(pdf_crypt **cp, fz_obj *enc, fz_obj *id);
+fz_error *pdf_newencrypt(pdf_crypt **cp, fz_obj **edict, char *userpw, char *ownerpw, int p, int n, fz_obj *id);
+fz_error *pdf_setpassword(pdf_crypt *crypt, char *pw);
+fz_error *pdf_cryptstm(fz_filter **fp, pdf_crypt *crypt, int oid, int gid);
+void pdf_cryptobj(pdf_crypt *crypt, fz_obj *obj, int oid, int gid);
+void pdf_freecrypt(pdf_crypt *crypt);
+
+/* repair.c */
+fz_error *pdf_repairxref(pdf_xref*, char *filename);
+
+/* open.c */
+fz_error *pdf_openxref(pdf_xref*, char *filename);
+fz_error *pdf_readobjstm(pdf_xref *xref, int oid, int gid, unsigned char *buf, int cap);
+
+/* xref.c */
+fz_error *pdf_newxref(pdf_xref **xrefp);
+fz_error *pdf_decryptxref(pdf_xref *xref);
+void pdf_closexref(pdf_xref*);
+void pdf_debugxref(pdf_xref*);
+
+fz_obj *pdf_findstoredobject(fz_hashtable *store, int oid, int gid);
+fz_buffer *pdf_findstoredstream(fz_hashtable *store, int oid, int gid);
+fz_error *pdf_deletestoredobject(fz_hashtable *store, int oid, int gid);
+fz_error *pdf_deletestoredstream(fz_hashtable *store, int oid, int gid);
+fz_error *pdf_storeobject(fz_hashtable *store, int oid, int gid, fz_obj *obj);
+fz_error *pdf_storestream(fz_hashtable *store, int oid, int gid, fz_buffer *buf);
+
+fz_error *pdf_createobject(pdf_xref *xref, int *oidp, int *gidp);
+fz_error *pdf_deleteobject(pdf_xref *xref, int oid, int gid);
+fz_error *pdf_saveobject(pdf_xref *xref, int oid, int gid, fz_obj *obj);
+fz_error *pdf_loadobject0(fz_obj **, pdf_xref*, int oid, int gid, int *stmofs);
+fz_error *pdf_loadobject(fz_obj **, pdf_xref*, fz_obj *ref, int *stmofs);
+fz_error *pdf_resolve(fz_obj **, pdf_xref*);
+
+/* save.c */
+fz_error *pdf_saveincrementalpdf(pdf_xref *xref, char *path);
+fz_error *pdf_savepdf(pdf_xref *xref, char *path);
+
+/*
+ * high-level semantic objects for resources and pages
+ */
+
+typedef struct pdf_pagetree_s pdf_pagetree;
+typedef struct pdf_font_s pdf_font;
+typedef struct pdf_resources_s pdf_resources;
+typedef struct pdf_gstate_s pdf_gstate;
+typedef struct pdf_csi_s pdf_csi;
+
+struct pdf_pagetree_s
+{
+	int count;
+	int cursor;
+	fz_obj **pref;
+	fz_obj **pobj;
+};
+
+struct pdf_font_s
+{
+	fz_font super;
+
+	void *ftface;
+
+	fz_cmap *encoding;
+	int cidtogidlen;
+	int *cidtogidmap;
+
+	char *filename;
+	char *fontdata;
+	int fontlen;
+};
+
+struct pdf_type3_s
+{
+	fz_rect bbox;
+	fz_matrix matrix;
+	int widths[256];
+	fz_tree *charprocs[256];
+	int tounicode[256];
+};
+
+struct pdf_resources_s
+{
+	fz_obj *extgstate;
+	fz_obj *colorspace;
+	fz_obj *font;
+	fz_obj *ximage;
+	fz_obj *xform;
+};
+
+struct pdf_gstate_s
+{
+	/* path stroking */
+	float linewidth;
+	int linecap;
+	int linejoin;
+	float miterlimit;
+	float dashphase;
+	int dashlen;
+	float dashlist[32];
+
+	/* colors and colorspaces */
+	struct { float r, g, b; } stroke, fill;
+
+	/* text state */
+	float charspace;
+	float wordspace;
+	float scale;
+	float leading;
+	pdf_font *font;
+	float size;
+	int render;
+	float rise;
+
+	/* tree construction state */
+	fz_node *head;
+};
+
+struct pdf_csi_s
+{
+	pdf_gstate gstate[32];
+	int gtop;
+	fz_obj *stack[32];
+	int top;
+	int xbalance;
+
+	/* path object state */
+	fz_path *path;
+	fz_path *clip;
+
+	/* text object state */
+	fz_text *text;
+	fz_matrix tlm;
+	fz_matrix tm;
+
+	fz_tree *tree;
+};
+
+/* pagetree.c */
+fz_error *pdf_loadpagetree(pdf_pagetree **pp, pdf_xref *xref);
+void pdf_debugpagetree(pdf_pagetree *pages);
+void pdf_freepagetree(pdf_pagetree *pages);
+
+/* cmap.c */
+fz_error *pdf_parsecmap(fz_cmap **cmapp, fz_file *file);
+fz_error *pdf_loadembeddedcmap(fz_cmap **cmapp, pdf_xref *xref, fz_obj *stmref);
+fz_error *pdf_loadsystemcmap(fz_cmap **cmapp, char *name);
+fz_error *pdf_makeidentitycmap(fz_cmap **cmapp, int wmode);
+
+/* fontfile.c */
+fz_error *pdf_loadbuiltinfont(void **fontp, char *pattern);
+fz_error *pdf_loadsystemfont(void **fontp, char *basefont, char *collection);
+fz_error *pdf_loadembeddedfont(void **fontp, pdf_xref *xref, fz_obj *stmref);
+fz_error *pdf_loadfontdescriptor(void **fontp, pdf_xref *xref, fz_obj *desc, char *collection);
+
+/* font.c */
+fz_error *pdf_loadfont(pdf_font **fontp, pdf_xref *xref, fz_obj *font);
+void pdf_freefont(pdf_font *font);
+
+/* resources.c */
+fz_error *pdf_loadresources(pdf_resources **rdbp, pdf_xref *xref, fz_obj *resdict);
+void pdf_freeresources(pdf_resources *rdb);
+
+/* interpret.c */
+fz_error *pdf_newcsi(pdf_csi **csip);
+fz_error *pdf_runcsi(pdf_csi *, pdf_resources *, fz_file *);
+void pdf_freecsi(pdf_csi *csi);
+