/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program 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.
 *
 * This program 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, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 * blenloader readfile private function prototypes
 */

/** \file blender/blenloader/intern/readfile.h
 *  \ingroup blenloader
 */

#ifndef __READFILE_H__
#define __READFILE_H__

#include "zlib.h"

struct OldNewMap;
struct MemFile;
struct bheadsort;
struct ReportList;
struct Object;
struct PartEff;
struct View3D;
struct bNodeTree;

typedef struct FileData {
	// linked list of BHeadN's
	ListBase listbase;
	int flags;
	int eof;
	int buffersize;
	int seek;
	int (*read)(struct FileData *filedata, void *buffer, unsigned int size);

	// variables needed for reading from memory / stream
	const char *buffer;
	// variables needed for reading from memfile (undo)
	struct MemFile *memfile;

	// variables needed for reading from file
	int filedes;
	gzFile gzfiledes;

	// now only in use for library appending
	char relabase[FILE_MAX];
	
	// variables needed for reading from stream
	char headerdone;
	int inbuffer;
	
	// gzip stream for memory decompression
	z_stream strm;
	
	// general reading variables
	struct SDNA *filesdna;
	struct SDNA *memsdna;
	char *compflags;
	
	int fileversion;
	int id_name_offs;       /* used to retrieve ID names from (bhead+1) */
	int globalf, fileflags; /* for do_versions patching */
	
	struct OldNewMap *datamap;
	struct OldNewMap *globmap;
	struct OldNewMap *libmap;
	struct OldNewMap *imamap;
	struct OldNewMap *movieclipmap;
	struct OldNewMap *packedmap;
	
	struct BHeadSort *bheadmap;
	int tot_bheadmap;
	
	ListBase *mainlist;
	
	/* ick ick, used to return
	 * data through streamglue.
	 */
	BlendFileData **bfd_r;
	struct ReportList *reports;
} FileData;

typedef struct BHeadN {
	struct BHeadN *next, *prev;
	struct BHead bhead;
} BHeadN;


#define FD_FLAGS_SWITCH_ENDIAN             (1 << 0)
#define FD_FLAGS_FILE_POINTSIZE_IS_4       (1 << 1)
#define FD_FLAGS_POINTSIZE_DIFFERS         (1 << 2)
#define FD_FLAGS_FILE_OK                   (1 << 3)
#define FD_FLAGS_NOT_MY_BUFFER             (1 << 4)
#define FD_FLAGS_NOT_MY_LIBMAP             (1 << 5)

#define SIZEOFBLENDERHEADER 12

/***/
struct Main;
void blo_join_main(ListBase *mainlist);
void blo_split_main(ListBase *mainlist, struct Main *main);

BlendFileData *blo_read_file_internal(FileData *fd, const char *filepath);

FileData *blo_openblenderfile(const char *filepath, struct ReportList *reports);
FileData *blo_openblendermemory(const void *buffer, int buffersize, struct ReportList *reports);
FileData *blo_openblendermemfile(struct MemFile *memfile, struct ReportList *reports);

void blo_clear_proxy_pointers_from_lib(Main *oldmain);
void blo_make_image_pointer_map(FileData *fd, Main *oldmain);
void blo_end_image_pointer_map(FileData *fd, Main *oldmain);
void blo_make_movieclip_pointer_map(FileData *fd, Main *oldmain);
void blo_end_movieclip_pointer_map(FileData *fd, Main *oldmain);
void blo_make_packed_pointer_map(FileData *fd, Main *oldmain);
void blo_end_packed_pointer_map(FileData *fd, Main *oldmain);
void blo_add_library_pointer_map(ListBase *mainlist, FileData *fd);

void blo_freefiledata(FileData *fd);

BHead *blo_firstbhead(FileData *fd);
BHead *blo_nextbhead(FileData *fd, BHead *thisblock);
BHead *blo_prevbhead(FileData *fd, BHead *thisblock);

char *bhead_id_name(FileData *fd, BHead *bhead);

/* do versions stuff */

void blo_do_versions_oldnewmap_insert(struct OldNewMap *onm, void *oldaddr, void *newaddr, int nr);
void *blo_do_versions_newlibadr(struct FileData *fd, void *lib, void *adr);
void *blo_do_versions_newlibadr_us(struct FileData *fd, void *lib, void *adr);

struct PartEff *blo_do_version_give_parteff_245(struct Object *ob);
void blo_do_version_old_trackto_to_constraints(struct Object *ob);
void blo_do_versions_view3d_split_250(struct View3D *v3d, struct ListBase *regions);

void blo_do_versions_pre250(struct FileData *fd, struct Library *lib, struct Main *main);
void blo_do_versions_250(struct FileData *fd, struct Library *lib, struct Main *main);

#endif

