Merging r41564 through r41596 from trunk into soc-2011-tomato
[blender.git] / source / blender / blenloader / intern / readfile.c
1 /*
2  * ***** BEGIN GPL LICENSE BLOCK *****
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software Foundation,
16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  *
18  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
19  * All rights reserved.
20  *
21  *
22  * Contributor(s): Blender Foundation
23  *
24  * ***** END GPL LICENSE BLOCK *****
25  *
26  */
27
28 /** \file blender/blenloader/intern/readfile.c
29  *  \ingroup blenloader
30  */
31
32
33 #include "zlib.h"
34
35 #include <limits.h>
36 #include <stdio.h> // for printf fopen fwrite fclose sprintf FILE
37 #include <stdlib.h> // for getenv atoi
38 #include <stddef.h> // for offsetof
39 #include <fcntl.h> // for open
40 #include <string.h> // for strrchr strncmp strstr
41 #include <math.h> // for fabs
42
43 #ifndef WIN32
44         #include <unistd.h> // for read close
45 #else
46         #include <io.h> // for open close read
47 #include "winsock2.h"
48 #include "BLI_winstuff.h"
49 #endif
50
51 #include "DNA_anim_types.h"
52 #include "DNA_armature_types.h"
53 #include "DNA_actuator_types.h"
54 #include "DNA_brush_types.h"
55 #include "DNA_camera_types.h"
56 #include "DNA_cloth_types.h"
57 #include "DNA_controller_types.h"
58 #include "DNA_constraint_types.h"
59 #include "DNA_effect_types.h"
60 #include "DNA_fileglobal_types.h"
61 #include "DNA_genfile.h"
62 #include "DNA_group_types.h"
63 #include "DNA_gpencil_types.h"
64 #include "DNA_ipo_types.h"
65 #include "DNA_key_types.h"
66 #include "DNA_lattice_types.h"
67 #include "DNA_lamp_types.h"
68 #include "DNA_meta_types.h"
69 #include "DNA_material_types.h"
70 #include "DNA_mesh_types.h"
71 #include "DNA_meshdata_types.h"
72 #include "DNA_nla_types.h"
73 #include "DNA_node_types.h"
74 #include "DNA_object_fluidsim.h" // NT
75 #include "DNA_packedFile_types.h"
76 #include "DNA_particle_types.h"
77 #include "DNA_property_types.h"
78 #include "DNA_text_types.h"
79 #include "DNA_view3d_types.h"
80 #include "DNA_screen_types.h"
81 #include "DNA_sensor_types.h"
82 #include "DNA_sdna_types.h"
83 #include "DNA_scene_types.h"
84 #include "DNA_sequence_types.h"
85 #include "DNA_smoke_types.h"
86 #include "DNA_speaker_types.h"
87 #include "DNA_sound_types.h"
88 #include "DNA_space_types.h"
89 #include "DNA_vfont_types.h"
90 #include "DNA_world_types.h"
91 #include "DNA_movieclip_types.h"
92
93 #include "MEM_guardedalloc.h"
94
95 #include "BLI_blenlib.h"
96 #include "BLI_math.h"
97 #include "BLI_utildefines.h"
98
99 #include "BKE_anim.h"
100 #include "BKE_action.h"
101 #include "BKE_armature.h"
102 #include "BKE_brush.h"
103 #include "BKE_colortools.h"
104 #include "BKE_constraint.h"
105 #include "BKE_context.h"
106 #include "BKE_curve.h"
107 #include "BKE_deform.h"
108 #include "BKE_effect.h" /* give_parteff */
109 #include "BKE_fcurve.h"
110 #include "BKE_global.h" // for G
111 #include "BKE_group.h"
112 #include "BKE_image.h"
113 #include "BKE_lattice.h"
114 #include "BKE_library.h" // for which_libbase
115 #include "BKE_idcode.h"
116 #include "BKE_material.h"
117 #include "BKE_main.h" // for Main
118 #include "BKE_mesh.h" // for ME_ defines (patching)
119 #include "BKE_modifier.h"
120 #include "BKE_multires.h"
121 #include "BKE_node.h" // for tree type defines
122 #include "BKE_object.h"
123 #include "BKE_paint.h"
124 #include "BKE_particle.h"
125 #include "BKE_pointcache.h"
126 #include "BKE_property.h" // for get_ob_property
127 #include "BKE_report.h"
128 #include "BKE_sca.h" // for init_actuator
129 #include "BKE_scene.h"
130 #include "BKE_screen.h"
131 #include "BKE_sequencer.h"
132 #include "BKE_texture.h" // for open_plugin_tex
133 #include "BKE_tracking.h"
134 #include "BKE_utildefines.h" // SWITCH_INT DATA ENDB DNA1 O_BINARY GLOB USER TEST REND
135 #include "BKE_sound.h"
136
137 #include "NOD_socket.h"
138
139 //XXX #include "BIF_butspace.h" // badlevel, for do_versions, patching event codes
140 //XXX #include "BIF_filelist.h" // badlevel too, where to move this? - elubie
141 //XXX #include "BIF_previewrender.h" // bedlelvel, for struct RenderInfo
142 #include "BLO_readfile.h"
143 #include "BLO_undofile.h"
144
145 #include "RE_engine.h"
146
147 #include "readfile.h"
148
149 #include "PIL_time.h"
150
151 #include <errno.h>
152
153 /*
154  Remark: still a weak point is the newaddress() function, that doesnt solve reading from
155  multiple files at the same time
156
157  (added remark: oh, i thought that was solved? will look at that... (ton)
158
159 READ
160 - Existing Library (Main) push or free
161 - allocate new Main
162 - load file
163 - read SDNA
164 - for each LibBlock
165         - read LibBlock
166         - if a Library
167                 - make a new Main
168                 - attach ID's to it
169         - else
170                 - read associated 'direct data'
171                 - link direct data (internal and to LibBlock)
172 - read FileGlobal
173 - read USER data, only when indicated (file is ~/X.XX/startup.blend)
174 - free file
175 - per Library (per Main)
176         - read file
177         - read SDNA
178         - find LibBlocks and attach IDs to Main
179                 - if external LibBlock
180                         - search all Main's
181                                 - or it's already read,
182                                 - or not read yet
183                                 - or make new Main
184         - per LibBlock
185                 - read recursive
186                 - read associated direct data
187                 - link direct data (internal and to LibBlock)
188         - free file
189 - per Library with unread LibBlocks
190         - read file
191         - read SDNA
192         - per LibBlock
193                            - read recursive
194                            - read associated direct data
195                            - link direct data (internal and to LibBlock)
196                 - free file
197 - join all Mains
198 - link all LibBlocks and indirect pointers to libblocks
199 - initialize FileGlobal and copy pointers to Global
200 */
201
202 /* also occurs in library.c */
203 /* GS reads the memory pointed at in a specific ordering. There are,
204  * however two definitions for it. I have jotted them down here, both,
205  * but I think the first one is actually used. The thing is that
206  * big-endian systems might read this the wrong way round. OTOH, we
207  * constructed the IDs that are read out with this macro explicitly as
208  * well. I expect we'll sort it out soon... */
209
210 /* from blendef: */
211 #define GS(a)   (*((short *)(a)))
212
213 /* from misc_util: flip the bytes from x  */
214 /*  #define GS(x) (((unsigned char *)(x))[0] << 8 | ((unsigned char *)(x))[1]) */
215
216 // only used here in readfile.c
217 #define SWITCH_LONGINT(a) { \
218         char s_i, *p_i; \
219         p_i= (char *)&(a);  \
220         s_i=p_i[0]; p_i[0]=p_i[7]; p_i[7]=s_i; \
221         s_i=p_i[1]; p_i[1]=p_i[6]; p_i[6]=s_i; \
222         s_i=p_i[2]; p_i[2]=p_i[5]; p_i[5]=s_i; \
223         s_i=p_i[3]; p_i[3]=p_i[4]; p_i[4]=s_i; }
224
225 /***/
226
227 typedef struct OldNew {
228         void *old, *newp;
229         int nr;
230 } OldNew;
231
232 typedef struct OldNewMap {
233         OldNew *entries;
234         int nentries, entriessize;
235         int sorted;
236         int lasthit;
237 } OldNewMap;
238
239
240 /* local prototypes */
241 static void *read_struct(FileData *fd, BHead *bh, const char *blockname);
242 static void direct_link_modifiers(FileData *fd, ListBase *lb);
243 static void convert_tface_mt(FileData *fd, Main *main);
244
245 static OldNewMap *oldnewmap_new(void) 
246 {
247         OldNewMap *onm= MEM_callocN(sizeof(*onm), "OldNewMap");
248         
249         onm->entriessize= 1024;
250         onm->entries= MEM_mallocN(sizeof(*onm->entries)*onm->entriessize, "OldNewMap.entries");
251         
252         return onm;
253 }
254
255 static int verg_oldnewmap(const void *v1, const void *v2)
256 {
257         const struct OldNew *x1=v1, *x2=v2;
258         
259         if( x1->old > x2->old) return 1;
260         else if( x1->old < x2->old) return -1;
261         return 0;
262 }
263
264
265 static void oldnewmap_sort(FileData *fd) 
266 {
267         qsort(fd->libmap->entries, fd->libmap->nentries, sizeof(OldNew), verg_oldnewmap);
268         fd->libmap->sorted= 1;
269 }
270
271 /* nr is zero for data, and ID code for libdata */
272 static void oldnewmap_insert(OldNewMap *onm, void *oldaddr, void *newaddr, int nr) 
273 {
274         OldNew *entry;
275
276         if(oldaddr==NULL || newaddr==NULL) return;
277         
278         if (onm->nentries==onm->entriessize) {
279                 int osize= onm->entriessize;
280                 OldNew *oentries= onm->entries;
281
282                 onm->entriessize*= 2;
283                 onm->entries= MEM_mallocN(sizeof(*onm->entries)*onm->entriessize, "OldNewMap.entries");
284
285                 memcpy(onm->entries, oentries, sizeof(*oentries)*osize);
286                 MEM_freeN(oentries);
287         }
288
289         entry= &onm->entries[onm->nentries++];
290         entry->old= oldaddr;
291         entry->newp= newaddr;
292         entry->nr= nr;
293 }
294
295 static void *oldnewmap_lookup_and_inc(OldNewMap *onm, void *addr) 
296 {
297         int i;
298
299         if(addr==NULL) return NULL;
300
301         if (onm->lasthit<onm->nentries-1) {
302                 OldNew *entry= &onm->entries[++onm->lasthit];
303
304                 if (entry->old==addr) {
305                         entry->nr++;
306                         return entry->newp;
307                 }
308         }
309
310         for (i=0; i<onm->nentries; i++) {
311                 OldNew *entry= &onm->entries[i];
312
313                 if (entry->old==addr) {
314                         onm->lasthit= i;
315
316                         entry->nr++;
317                         return entry->newp;
318                 }
319         }
320
321         return NULL;
322 }
323
324 /* for libdata, nr has ID code, no increment */
325 static void *oldnewmap_liblookup(OldNewMap *onm, void *addr, void *lib) 
326 {
327         int i;
328         
329         if(addr==NULL) return NULL;
330         
331         /* lasthit works fine for non-libdata, linking there is done in same sequence as writing */
332         if(onm->sorted) {
333                 OldNew entry_s, *entry;
334                 
335                 entry_s.old= addr;
336                 
337                 entry= bsearch(&entry_s, onm->entries, onm->nentries, sizeof(OldNew), verg_oldnewmap);
338                 if(entry) {
339                         ID *id= entry->newp;
340                         
341                         if (id && (!lib || id->lib)) {
342                                 return entry->newp;
343                         }
344                 }
345         }
346         
347         for (i=0; i<onm->nentries; i++) {
348                 OldNew *entry= &onm->entries[i];
349
350                 if (entry->old==addr) {
351                         ID *id= entry->newp;
352
353                         if (id && (!lib || id->lib)) {
354                                 return entry->newp;
355                         }
356                 }
357         }
358
359         return NULL;
360 }
361
362 static void oldnewmap_free_unused(OldNewMap *onm) 
363 {
364         int i;
365
366         for (i=0; i<onm->nentries; i++) {
367                 OldNew *entry= &onm->entries[i];
368                 if (entry->nr==0) {
369                         MEM_freeN(entry->newp);
370                         entry->newp= NULL;
371                 }
372         }
373 }
374
375 static void oldnewmap_clear(OldNewMap *onm) 
376 {
377         onm->nentries= 0;
378         onm->lasthit= 0;
379 }
380
381 static void oldnewmap_free(OldNewMap *onm) 
382 {
383         MEM_freeN(onm->entries);
384         MEM_freeN(onm);
385 }
386
387 /***/
388
389 static void read_libraries(FileData *basefd, ListBase *mainlist);
390
391 /* ************ help functions ***************** */
392
393 static void add_main_to_main(Main *mainvar, Main *from)
394 {
395         ListBase *lbarray[MAX_LIBARRAY], *fromarray[MAX_LIBARRAY];
396         int a;
397
398         set_listbasepointers(mainvar, lbarray);
399         a= set_listbasepointers(from, fromarray);
400         while(a--) {
401                 BLI_movelisttolist(lbarray[a], fromarray[a]);
402         }
403 }
404
405 void blo_join_main(ListBase *mainlist)
406 {
407         Main *tojoin, *mainl;
408         
409         
410         mainl= mainlist->first;
411         while ((tojoin= mainl->next)) {
412                 add_main_to_main(mainl, tojoin);
413                 BLI_remlink(mainlist, tojoin);
414                 MEM_freeN(tojoin);
415         }
416 }
417
418 static void split_libdata(ListBase *lb, Main *first)
419 {
420         ListBase *lbn;
421         ID *id, *idnext;
422         Main *mainvar;
423
424         id= lb->first;
425         while(id) {
426                 idnext= id->next;
427                 if(id->lib) {
428                         mainvar= first;
429                         while(mainvar) {
430                                 if(mainvar->curlib==id->lib) {
431                                         lbn= which_libbase(mainvar, GS(id->name));
432                                         BLI_remlink(lb, id);
433                                         BLI_addtail(lbn, id);
434                                         break;
435                                 }
436                                 mainvar= mainvar->next;
437                         }
438                         if(mainvar==NULL) printf("error split_libdata\n");
439                 }
440                 id= idnext;
441         }
442 }
443
444 void blo_split_main(ListBase *mainlist, Main *main)
445 {
446         ListBase *lbarray[MAX_LIBARRAY];
447         Library *lib;
448         int i;
449
450         mainlist->first= mainlist->last= main;
451         main->next= NULL;
452
453         if(main->library.first==NULL)
454                 return;
455         
456         for (lib= main->library.first; lib; lib= lib->id.next) {
457                 Main *libmain= MEM_callocN(sizeof(Main), "libmain");
458                 libmain->curlib= lib;
459                 BLI_addtail(mainlist, libmain);
460         }
461
462         i= set_listbasepointers(main, lbarray);
463         while(i--)
464                 split_libdata(lbarray[i], main->next);
465 }
466
467 /* removes things like /blah/blah/../../blah/ etc, then writes in *name the full path */
468 static void cleanup_path(const char *relabase, char *name)
469 {
470         char filename[FILE_MAXFILE];
471         
472         BLI_splitdirstring(name, filename);
473         BLI_cleanup_dir(relabase, name);
474         strcat(name, filename);
475 }
476
477 static void read_file_version(FileData *fd, Main *main)
478 {
479         BHead *bhead;
480         
481         for (bhead= blo_firstbhead(fd); bhead; bhead= blo_nextbhead(fd, bhead)) {
482                 if (bhead->code==GLOB) {
483                         FileGlobal *fg= read_struct(fd, bhead, "Global");
484                         if(fg) {
485                                 main->subversionfile= fg->subversion;
486                                 main->minversionfile= fg->minversion;
487                                 main->minsubversionfile= fg->minsubversion;
488                                 MEM_freeN(fg);
489                         }
490                         else if (bhead->code==ENDB)
491                                 break;
492                 }
493         }
494 }
495
496
497 static Main *blo_find_main(FileData *fd, ListBase *mainlist, const char *filepath, const char *relabase)
498 {
499         Main *m;
500         Library *lib;
501         char name1[FILE_MAXDIR+FILE_MAXFILE];
502         
503         BLI_strncpy(name1, filepath, sizeof(name1));
504         cleanup_path(relabase, name1);
505 //      printf("blo_find_main: original in  %s\n", name);
506 //      printf("blo_find_main: converted to %s\n", name1);
507
508         for (m= mainlist->first; m; m= m->next) {
509                 char *libname= (m->curlib)?m->curlib->filepath:m->name;
510                 
511                 if (BLI_path_cmp(name1, libname) == 0) {
512                         if(G.f & G_DEBUG) printf("blo_find_main: found library %s\n", libname);
513                         return m;
514                 }
515         }
516
517         m= MEM_callocN(sizeof(Main), "find_main");
518         BLI_addtail(mainlist, m);
519
520         lib= alloc_libblock(&m->library, ID_LI, "lib");
521         BLI_strncpy(lib->name, filepath, sizeof(lib->name));
522         BLI_strncpy(lib->filepath, name1, sizeof(lib->filepath));
523         
524         m->curlib= lib;
525         
526         read_file_version(fd, m);
527         
528         if(G.f & G_DEBUG) printf("blo_find_main: added new lib %s\n", filepath);
529         return m;
530 }
531
532
533 /* ************ FILE PARSING ****************** */
534
535 static void switch_endian_bh4(BHead4 *bhead)
536 {
537         /* the ID_.. codes */
538         if((bhead->code & 0xFFFF)==0) bhead->code >>=16;
539
540         if (bhead->code != ENDB) {
541                 SWITCH_INT(bhead->len);
542                 SWITCH_INT(bhead->SDNAnr);
543                 SWITCH_INT(bhead->nr);
544         }
545 }
546
547 static void switch_endian_bh8(BHead8 *bhead)
548 {
549         /* the ID_.. codes */
550         if((bhead->code & 0xFFFF)==0) bhead->code >>=16;
551
552         if (bhead->code != ENDB) {
553                 SWITCH_INT(bhead->len);
554                 SWITCH_INT(bhead->SDNAnr);
555                 SWITCH_INT(bhead->nr);
556         }
557 }
558
559 static void bh4_from_bh8(BHead *bhead, BHead8 *bhead8, int do_endian_swap)
560 {
561         BHead4 *bhead4 = (BHead4 *) bhead;
562 #if defined(WIN32) && !defined(FREE_WINDOWS)
563         __int64 old;
564 #else
565         long long old;
566 #endif
567
568         bhead4->code= bhead8->code;
569         bhead4->len= bhead8->len;
570
571         if (bhead4->code != ENDB) {
572
573                 //perform a endian swap on 64bit pointers, otherwise the pointer might map to zero
574                 //0x0000000000000000000012345678 would become 0x12345678000000000000000000000000
575                 if (do_endian_swap) {
576                         SWITCH_LONGINT(bhead8->old);
577                 }
578
579                 /* this patch is to avoid a long long being read from not-eight aligned positions
580                    is necessary on any modern 64bit architecture) */
581                 memcpy(&old, &bhead8->old, 8);
582                 bhead4->old = (int) (old >> 3);
583
584                 bhead4->SDNAnr= bhead8->SDNAnr;
585                 bhead4->nr= bhead8->nr;
586         }
587 }
588
589 static void bh8_from_bh4(BHead *bhead, BHead4 *bhead4)
590 {
591         BHead8 *bhead8 = (BHead8 *) bhead;
592
593         bhead8->code= bhead4->code;
594         bhead8->len= bhead4->len;
595
596         if (bhead8->code != ENDB) {
597                 bhead8->old= bhead4->old;
598                 bhead8->SDNAnr= bhead4->SDNAnr;
599                 bhead8->nr= bhead4->nr;
600         }
601 }
602
603 static BHeadN *get_bhead(FileData *fd)
604 {
605         BHeadN *new_bhead = NULL;
606         int readsize;
607         
608         if (fd) {
609                 if ( ! fd->eof) {
610                         /* initializing to zero isn't strictly needed but shuts valgrind up
611                          * since uninitialized memory gets compared */
612                         BHead8 bhead8= {0};
613                         BHead4 bhead4= {0};
614                         BHead  bhead= {0};
615                         
616                         // First read the bhead structure.
617                         // Depending on the platform the file was written on this can
618                         // be a big or little endian BHead4 or BHead8 structure.
619
620                         // As usual 'ENDB' (the last *partial* bhead of the file)
621                         // needs some special handling. We don't want to EOF just yet.
622
623                         if (fd->flags & FD_FLAGS_FILE_POINTSIZE_IS_4) {
624                                 bhead4.code = DATA;
625                                 readsize = fd->read(fd, &bhead4, sizeof(bhead4));
626
627                                 if (readsize == sizeof(bhead4) || bhead4.code == ENDB) {
628                                         if (fd->flags & FD_FLAGS_SWITCH_ENDIAN) {
629                                                 switch_endian_bh4(&bhead4);
630                                         }
631
632                                         if (fd->flags & FD_FLAGS_POINTSIZE_DIFFERS) {
633                                                 bh8_from_bh4(&bhead, &bhead4);
634                                         } else {
635                                                 memcpy(&bhead, &bhead4, sizeof(bhead));
636                                         }
637                                 } else {
638                                         fd->eof = 1;
639                                         bhead.len= 0;
640                                 }
641                         } else {
642                                 bhead8.code = DATA;
643                                 readsize = fd->read(fd, &bhead8, sizeof(bhead8));
644
645                                 if (readsize == sizeof(bhead8) || bhead8.code == ENDB) {
646                                         if (fd->flags & FD_FLAGS_SWITCH_ENDIAN) {
647                                                 switch_endian_bh8(&bhead8);
648                                         }
649
650                                         if (fd->flags & FD_FLAGS_POINTSIZE_DIFFERS) {
651                                                 bh4_from_bh8(&bhead, &bhead8, (fd->flags & FD_FLAGS_SWITCH_ENDIAN));
652                                         } else {
653                                                 memcpy(&bhead, &bhead8, sizeof(bhead));
654                                         }
655                                 } else {
656                                         fd->eof = 1;
657                                         bhead.len= 0;
658                                 }
659                         }
660
661                         /* make sure people are not trying to pass bad blend files */
662                         if (bhead.len < 0) fd->eof = 1;
663
664                         // bhead now contains the (converted) bhead structure. Now read
665                         // the associated data and put everything in a BHeadN (creative naming !)
666
667                         if ( ! fd->eof) {
668                                 new_bhead = MEM_mallocN(sizeof(BHeadN) + bhead.len, "new_bhead");
669                                 if (new_bhead) {
670                                         new_bhead->next = new_bhead->prev = NULL;
671                                         new_bhead->bhead = bhead;
672
673                                         readsize = fd->read(fd, new_bhead + 1, bhead.len);
674
675                                         if (readsize != bhead.len) {
676                                                 fd->eof = 1;
677                                                 MEM_freeN(new_bhead);
678                                                 new_bhead = NULL;
679                                         }
680                                 } else {
681                                         fd->eof = 1;
682                                 }
683                         }
684                 }
685         }
686
687         // We've read a new block. Now add it to the list
688         // of blocks.
689
690         if (new_bhead) {
691                 BLI_addtail(&fd->listbase, new_bhead);
692         }
693
694         return(new_bhead);
695 }
696
697 BHead *blo_firstbhead(FileData *fd)
698 {
699         BHeadN *new_bhead;
700         BHead *bhead = NULL;
701
702         // Rewind the file
703         // Read in a new block if necessary
704
705         new_bhead = fd->listbase.first;
706         if (new_bhead == NULL) {
707                 new_bhead = get_bhead(fd);
708         }
709
710         if (new_bhead) {
711                 bhead = &new_bhead->bhead;
712         }
713
714         return(bhead);
715 }
716
717 BHead *blo_prevbhead(FileData *UNUSED(fd), BHead *thisblock)
718 {
719         BHeadN *bheadn= (BHeadN *) (((char *) thisblock) - GET_INT_FROM_POINTER( &((BHeadN*)0)->bhead) );
720         BHeadN *prev= bheadn->prev;
721
722         return prev?&prev->bhead:NULL;
723 }
724
725 BHead *blo_nextbhead(FileData *fd, BHead *thisblock)
726 {
727         BHeadN *new_bhead = NULL;
728         BHead *bhead = NULL;
729
730         if (thisblock) {
731                 // bhead is actually a sub part of BHeadN
732                 // We calculate the BHeadN pointer from the BHead pointer below
733                 new_bhead = (BHeadN *) (((char *) thisblock) - GET_INT_FROM_POINTER( &((BHeadN*)0)->bhead) );
734
735                 // get the next BHeadN. If it doesn't exist we read in the next one
736                 new_bhead = new_bhead->next;
737                 if (new_bhead == NULL) {
738                         new_bhead = get_bhead(fd);
739                 }
740         }
741
742         if (new_bhead) {
743                 // here we do the reverse:
744                 // go from the BHeadN pointer to the BHead pointer
745                 bhead = &new_bhead->bhead;
746         }
747
748         return(bhead);
749 }
750
751 static void decode_blender_header(FileData *fd)
752 {
753         char header[SIZEOFBLENDERHEADER], num[4];
754         int readsize;
755
756         // read in the header data
757         readsize = fd->read(fd, header, sizeof(header));
758
759         if (readsize == sizeof(header)) {
760                 if(strncmp(header, "BLENDER", 7) == 0) {
761                         int remove_this_endian_test= 1;
762
763                         fd->flags |= FD_FLAGS_FILE_OK;
764
765                         // what size are pointers in the file ?
766                         if(header[7]=='_') {
767                                 fd->flags |= FD_FLAGS_FILE_POINTSIZE_IS_4;
768                                 if (sizeof(void *) != 4) {
769                                         fd->flags |= FD_FLAGS_POINTSIZE_DIFFERS;
770                                 }
771                         } else {
772                                 if (sizeof(void *) != 8) {
773                                         fd->flags |= FD_FLAGS_POINTSIZE_DIFFERS;
774                                 }
775                         }
776
777                         // is the file saved in a different endian
778                         // than we need ?
779                         if (((((char*)&remove_this_endian_test)[0]==1)?L_ENDIAN:B_ENDIAN) != ((header[8]=='v')?L_ENDIAN:B_ENDIAN)) {
780                                 fd->flags |= FD_FLAGS_SWITCH_ENDIAN;
781                         }
782
783                         // get the version number
784
785                         memcpy(num, header+9, 3);
786                         num[3] = 0;
787                         fd->fileversion = atoi(num);
788                 }
789         }
790 }
791
792 static int read_file_dna(FileData *fd)
793 {
794         BHead *bhead;
795
796         for (bhead= blo_firstbhead(fd); bhead; bhead= blo_nextbhead(fd, bhead)) {
797                 if (bhead->code==DNA1) {
798                         int do_endian_swap= (fd->flags&FD_FLAGS_SWITCH_ENDIAN)?1:0;
799
800                         fd->filesdna= DNA_sdna_from_data(&bhead[1], bhead->len, do_endian_swap);
801                         if (fd->filesdna) {
802                                 
803                                 fd->compflags= DNA_struct_get_compareflags(fd->filesdna, fd->memsdna);
804                                 /* used to retrieve ID names from (bhead+1) */
805                                 fd->id_name_offs= DNA_elem_offset(fd->filesdna, "ID", "char", "name[]");
806                         }
807
808                         return 1;
809                 } else if (bhead->code==ENDB)
810                         break;
811         }
812
813         return 0;
814 }
815
816 static int fd_read_from_file(FileData *filedata, void *buffer, unsigned int size)
817 {
818         int readsize = read(filedata->filedes, buffer, size);
819
820         if (readsize < 0) {
821                 readsize = EOF;
822         } else {
823                 filedata->seek += readsize;
824         }
825
826         return (readsize);
827 }
828
829 static int fd_read_gzip_from_file(FileData *filedata, void *buffer, unsigned int size)
830 {
831         int readsize = gzread(filedata->gzfiledes, buffer, size);
832
833         if (readsize < 0) {
834                 readsize = EOF;
835         } else {
836                 filedata->seek += readsize;
837         }
838
839         return (readsize);
840 }
841
842 static int fd_read_from_memory(FileData *filedata, void *buffer, unsigned int size)
843 {
844         // don't read more bytes then there are available in the buffer
845         int readsize = (int)MIN2(size, (unsigned int)(filedata->buffersize - filedata->seek));
846
847         memcpy(buffer, filedata->buffer + filedata->seek, readsize);
848         filedata->seek += readsize;
849
850         return (readsize);
851 }
852
853 static int fd_read_from_memfile(FileData *filedata, void *buffer, unsigned int size)
854 {
855         static unsigned int seek= 1<<30;        /* the current position */
856         static unsigned int offset= 0;          /* size of previous chunks */
857         static MemFileChunk *chunk=NULL;
858         unsigned int chunkoffset, readsize, totread;
859         
860         if(size==0) return 0;
861         
862         if(seek != (unsigned int)filedata->seek) {
863                 chunk= filedata->memfile->chunks.first;
864                 seek= 0;
865                 
866                 while(chunk) {
867                         if(seek + chunk->size > (unsigned) filedata->seek) break;
868                         seek+= chunk->size;
869                         chunk= chunk->next;
870                 }
871                 offset= seek;
872                 seek= filedata->seek;
873         }
874         
875         if(chunk) {
876                 totread= 0;
877
878                 do {
879                         /* first check if it's on the end if current chunk */
880                         if(seek-offset == chunk->size) {
881                                 offset+= chunk->size;
882                                 chunk= chunk->next;
883                         }
884
885                         /* debug, should never happen */
886                         if(chunk==NULL) {
887                                 printf("illegal read, chunk zero\n");
888                                 return 0;
889                         }
890
891                         chunkoffset= seek-offset;
892                         readsize= size-totread;
893
894                         /* data can be spread over multiple chunks, so clamp size
895                          * to within this chunk, and then it will read further in
896                          * the next chunk */
897                         if(chunkoffset+readsize > chunk->size)
898                                 readsize= chunk->size-chunkoffset;
899
900                         memcpy((char*)buffer+totread, chunk->buf+chunkoffset, readsize);
901                         totread += readsize;
902                         filedata->seek += readsize;
903                         seek += readsize;
904                 } while(totread < size);
905                 
906                 return totread;
907         }
908
909         return 0;
910 }
911
912 static FileData *filedata_new(void)
913 {
914         FileData *fd = MEM_callocN(sizeof(FileData), "FileData");
915
916         fd->filedes = -1;
917         fd->gzfiledes = NULL;
918
919                 /* XXX, this doesn't need to be done all the time,
920                  * but it keeps us reentrant,  remove once we have
921                  * a lib that provides a nice lock. - zr
922                  */
923         fd->memsdna = DNA_sdna_from_data(DNAstr,  DNAlen,  0);
924
925         fd->datamap = oldnewmap_new();
926         fd->globmap = oldnewmap_new();
927         fd->libmap = oldnewmap_new();
928
929         return fd;
930 }
931
932 static FileData *blo_decode_and_check(FileData *fd, ReportList *reports)
933 {
934         decode_blender_header(fd);
935
936         if (fd->flags & FD_FLAGS_FILE_OK) {
937                 if (!read_file_dna(fd)) {
938                         BKE_reportf(reports, RPT_ERROR, "Failed to read blend file: \"%s\", incomplete", fd->relabase);
939                         blo_freefiledata(fd);
940                         fd= NULL;
941                 }
942         } 
943         else {
944                 BKE_reportf(reports, RPT_ERROR, "Failed to read blend file: \"%s\", not a blend file", fd->relabase);
945                 blo_freefiledata(fd);
946                 fd= NULL;
947         }
948
949         return fd;
950 }
951
952 /* cannot be called with relative paths anymore! */
953 /* on each new library added, it now checks for the current FileData and expands relativeness */
954 FileData *blo_openblenderfile(const char *filepath, ReportList *reports)
955 {
956         gzFile gzfile;
957         errno= 0;
958         gzfile= gzopen(filepath, "rb");
959
960         if (gzfile == (gzFile)Z_NULL) {
961                 BKE_reportf(reports, RPT_ERROR, "Unable to open \"%s\": %s.", filepath, errno ? strerror(errno) : "Unknown error reading file");
962                 return NULL;
963         } else {
964                 FileData *fd = filedata_new();
965                 fd->gzfiledes = gzfile;
966                 fd->read = fd_read_gzip_from_file;
967
968                 /* needed for library_append and read_libraries */
969                 BLI_strncpy(fd->relabase, filepath, sizeof(fd->relabase));
970
971                 return blo_decode_and_check(fd, reports);
972         }
973 }
974
975 FileData *blo_openblendermemory(void *mem, int memsize, ReportList *reports)
976 {
977         if (!mem || memsize<SIZEOFBLENDERHEADER) {
978                 BKE_report(reports, RPT_ERROR, (mem)? "Unable to read": "Unable to open");
979                 return NULL;
980         } else {
981                 FileData *fd= filedata_new();
982                 fd->buffer= mem;
983                 fd->buffersize= memsize;
984                 fd->read= fd_read_from_memory;
985                 fd->flags|= FD_FLAGS_NOT_MY_BUFFER;
986
987                 return blo_decode_and_check(fd, reports);
988         }
989 }
990
991 FileData *blo_openblendermemfile(MemFile *memfile, ReportList *reports)
992 {
993         if (!memfile) {
994                 BKE_report(reports, RPT_ERROR, "Unable to open blend <memory>");
995                 return NULL;
996         } else {
997                 FileData *fd= filedata_new();
998                 fd->memfile= memfile;
999
1000                 fd->read= fd_read_from_memfile;
1001                 fd->flags|= FD_FLAGS_NOT_MY_BUFFER;
1002
1003                 return blo_decode_and_check(fd, reports);
1004         }
1005 }
1006
1007
1008 void blo_freefiledata(FileData *fd)
1009 {
1010         if (fd) {
1011                 
1012                 if (fd->filedes != -1) {
1013                         close(fd->filedes);
1014                 }
1015
1016                 if (fd->gzfiledes != NULL)
1017                 {
1018                         gzclose(fd->gzfiledes);
1019                 }
1020
1021                 if (fd->buffer && !(fd->flags & FD_FLAGS_NOT_MY_BUFFER)) {
1022                         MEM_freeN(fd->buffer);
1023                         fd->buffer = NULL;
1024                 }
1025
1026                 // Free all BHeadN data blocks
1027                 BLI_freelistN(&fd->listbase);
1028
1029                 if (fd->memsdna)
1030                         DNA_sdna_free(fd->memsdna);
1031                 if (fd->filesdna)
1032                         DNA_sdna_free(fd->filesdna);
1033                 if (fd->compflags)
1034                         MEM_freeN(fd->compflags);
1035
1036                 if (fd->datamap)
1037                         oldnewmap_free(fd->datamap);
1038                 if (fd->globmap)
1039                         oldnewmap_free(fd->globmap);
1040                 if (fd->imamap)
1041                         oldnewmap_free(fd->imamap);
1042                 if (fd->movieclipmap)
1043                         oldnewmap_free(fd->movieclipmap);
1044                 if (fd->libmap && !(fd->flags & FD_FLAGS_NOT_MY_LIBMAP))
1045                         oldnewmap_free(fd->libmap);
1046                 if (fd->bheadmap)
1047                         MEM_freeN(fd->bheadmap);
1048                 
1049                 MEM_freeN(fd);
1050         }
1051 }
1052
1053 /* ************ DIV ****************** */
1054
1055 int BLO_has_bfile_extension(const char *str)
1056 {
1057         return (BLI_testextensie(str, ".ble") || BLI_testextensie(str, ".blend") || BLI_testextensie(str, ".blend.gz"));
1058 }
1059
1060 int BLO_is_a_library(const char *path, char *dir, char *group)
1061 {
1062         /* return ok when a blenderfile, in dir is the filename,
1063          * in group the type of libdata
1064          */
1065         int len;
1066         char *fd;
1067         
1068         strcpy(dir, path);
1069         len= strlen(dir);
1070         if(len<7) return 0;
1071         if( dir[len-1] != '/' && dir[len-1] != '\\') return 0;
1072         
1073         group[0]= 0;
1074         dir[len-1]= 0;
1075
1076         /* Find the last slash */
1077         fd= BLI_last_slash(dir);
1078
1079         if(fd==NULL) return 0;
1080         *fd= 0;
1081         if(BLO_has_bfile_extension(fd+1)) {
1082                 /* the last part of the dir is a .blend file, no group follows */
1083                 *fd= '/'; /* put back the removed slash separating the dir and the .blend file name */
1084         }
1085         else {          
1086                 char *gp = fd+1; // in case we have a .blend file, gp points to the group
1087
1088                 /* Find the last slash */
1089                 fd= BLI_last_slash(dir);
1090                 if (!fd || !BLO_has_bfile_extension(fd+1)) return 0;
1091
1092                 /* now we know that we are in a blend file and it is safe to 
1093                    assume that gp actually points to a group */
1094                 if (strcmp("Screen", gp)!=0)
1095                         BLI_strncpy(group, gp, GROUP_MAX);
1096         }
1097         return 1;
1098 }
1099
1100 /* ************** OLD POINTERS ******************* */
1101
1102 static void *newdataadr(FileData *fd, void *adr)                /* only direct databocks */
1103 {
1104         return oldnewmap_lookup_and_inc(fd->datamap, adr);
1105 }
1106
1107 static void *newglobadr(FileData *fd, void *adr)                /* direct datablocks with global linking */
1108 {
1109         return oldnewmap_lookup_and_inc(fd->globmap, adr);
1110 }
1111
1112 static void *newimaadr(FileData *fd, void *adr)         /* used to restore image data after undo */
1113 {
1114         if(fd->imamap && adr)
1115                 return oldnewmap_lookup_and_inc(fd->imamap, adr);
1116         return NULL;
1117 }
1118
1119 static void *newmclipadr(FileData *fd, void *adr)              /* used to restore movie clip data after undo */
1120 {
1121         if(fd->movieclipmap && adr)
1122                 return oldnewmap_lookup_and_inc(fd->movieclipmap, adr);
1123         return NULL;
1124 }
1125
1126
1127 static void *newlibadr(FileData *fd, void *lib, void *adr)              /* only lib data */
1128 {
1129         return oldnewmap_liblookup(fd->libmap, adr, lib);
1130 }
1131
1132 static void *newlibadr_us(FileData *fd, void *lib, void *adr)   /* increases user number */
1133 {
1134         ID *id= newlibadr(fd, lib, adr);
1135
1136         if(id)
1137                 id->us++;
1138
1139         return id;
1140 }
1141
1142 static void change_idid_adr_fd(FileData *fd, void *old, void *new)
1143 {
1144         int i;
1145         
1146         for (i=0; i<fd->libmap->nentries; i++) {
1147                 OldNew *entry= &fd->libmap->entries[i];
1148                 
1149                 if (old==entry->newp && entry->nr==ID_ID) {
1150                         entry->newp= new;
1151                         if(new) entry->nr= GS( ((ID *)new)->name );
1152                         break;
1153                 }
1154         }
1155 }
1156
1157 static void change_idid_adr(ListBase *mainlist, FileData *basefd, void *old, void *new)
1158 {
1159         Main *mainptr;
1160         
1161         for(mainptr= mainlist->first; mainptr; mainptr= mainptr->next) {
1162                 FileData *fd;
1163                 
1164                 if(mainptr->curlib) fd= mainptr->curlib->filedata;
1165                 else fd= basefd;
1166                 
1167                 if(fd) {
1168                         change_idid_adr_fd(fd, old, new);
1169                 }
1170         }
1171 }
1172
1173 /* lib linked proxy objects point to our local data, we need
1174  * to clear that pointer before reading the undo memfile since
1175  * the object might be removed, it is set again in reading
1176  * if the local object still exists */
1177 void blo_clear_proxy_pointers_from_lib(Main *oldmain)
1178 {
1179         Object *ob= oldmain->object.first;
1180         
1181         for(;ob; ob= ob->id.next)
1182                 if(ob->id.lib)
1183                         ob->proxy_from= NULL;
1184 }
1185
1186 void blo_make_image_pointer_map(FileData *fd, Main *oldmain)
1187 {
1188         Image *ima= oldmain->image.first;
1189         Scene *sce= oldmain->scene.first;
1190         int a;
1191         
1192         fd->imamap= oldnewmap_new();
1193         
1194         for(;ima; ima= ima->id.next) {
1195                 Link *ibuf= ima->ibufs.first;
1196                 for(; ibuf; ibuf= ibuf->next) 
1197                         oldnewmap_insert(fd->imamap, ibuf, ibuf, 0);
1198                 if(ima->gputexture)
1199                         oldnewmap_insert(fd->imamap, ima->gputexture, ima->gputexture, 0);
1200                 for(a=0; a<IMA_MAX_RENDER_SLOT; a++)
1201                         if(ima->renders[a])
1202                                 oldnewmap_insert(fd->imamap, ima->renders[a], ima->renders[a], 0);
1203         }
1204         for(; sce; sce= sce->id.next) {
1205                 if(sce->nodetree) {
1206                         bNode *node;
1207                         for(node= sce->nodetree->nodes.first; node; node= node->next)
1208                                 oldnewmap_insert(fd->imamap, node->preview, node->preview, 0);
1209                 }
1210         }
1211 }
1212
1213 /* set old main image ibufs to zero if it has been restored */
1214 /* this works because freeing old main only happens after this call */
1215 void blo_end_image_pointer_map(FileData *fd, Main *oldmain)
1216 {
1217         OldNew *entry= fd->imamap->entries;
1218         Image *ima= oldmain->image.first;
1219         Scene *sce= oldmain->scene.first;
1220         int i;
1221         
1222         /* used entries were restored, so we put them to zero */
1223         for (i=0; i<fd->imamap->nentries; i++, entry++) {
1224                 if (entry->nr>0)
1225                         entry->newp= NULL;
1226         }
1227         
1228         for(;ima; ima= ima->id.next) {
1229                 Link *ibuf, *next;
1230                 
1231                 /* this mirrors direct_link_image */
1232                 for(ibuf= ima->ibufs.first; ibuf; ibuf= next) {
1233                         next= ibuf->next;
1234                         if(NULL==newimaadr(fd, ibuf)) { /* so was restored */
1235                                 BLI_remlink(&ima->ibufs, ibuf);
1236                                 ima->bindcode= 0;
1237                                 ima->gputexture= NULL;
1238                         }
1239                 }
1240                 for(i=0; i<IMA_MAX_RENDER_SLOT; i++)
1241                         ima->renders[i]= newimaadr(fd, ima->renders[i]);
1242
1243                 ima->gputexture= newimaadr(fd, ima->gputexture);
1244         }
1245         for(; sce; sce= sce->id.next) {
1246                 if(sce->nodetree) {
1247                         bNode *node;
1248                         for(node= sce->nodetree->nodes.first; node; node= node->next)
1249                                 node->preview= newimaadr(fd, node->preview);
1250                 }
1251         }
1252 }
1253
1254 void blo_make_movieclip_pointer_map(FileData *fd, Main *oldmain)
1255 {
1256         MovieClip *clip= oldmain->movieclip.first;
1257         Scene *sce= oldmain->scene.first;
1258
1259         fd->movieclipmap= oldnewmap_new();
1260
1261         for(;clip; clip= clip->id.next) {
1262                 if(clip->cache)
1263                         oldnewmap_insert(fd->movieclipmap, clip->cache, clip->cache, 0);
1264
1265                 if(clip->tracking.camera.intrinsics)
1266                         oldnewmap_insert(fd->movieclipmap, clip->tracking.camera.intrinsics, clip->tracking.camera.intrinsics, 0);
1267         }
1268
1269         for(; sce; sce= sce->id.next) {
1270                 if(sce->nodetree) {
1271                         bNode *node;
1272                         for(node= sce->nodetree->nodes.first; node; node= node->next)
1273                                 if(node->type==CMP_NODE_MOVIEDISTORTION)
1274                                         oldnewmap_insert(fd->movieclipmap, node->storage, node->storage, 0);
1275                 }
1276         }
1277 }
1278
1279 /* set old main movie clips caches to zero if it has been restored */
1280 /* this works because freeing old main only happens after this call */
1281 void blo_end_movieclip_pointer_map(FileData *fd, Main *oldmain)
1282 {
1283         OldNew *entry= fd->movieclipmap->entries;
1284         MovieClip *clip= oldmain->movieclip.first;
1285         Scene *sce= oldmain->scene.first;
1286         int i;
1287
1288         /* used entries were restored, so we put them to zero */
1289         for (i=0; i<fd->movieclipmap->nentries; i++, entry++) {
1290                 if (entry->nr>0)
1291                                 entry->newp= NULL;
1292         }
1293
1294         for(;clip; clip= clip->id.next) {
1295                 clip->cache= newmclipadr(fd, clip->cache);
1296                 clip->tracking.camera.intrinsics= newmclipadr(fd, clip->tracking.camera.intrinsics);
1297         }
1298
1299         for(; sce; sce= sce->id.next) {
1300                 if(sce->nodetree) {
1301                         bNode *node;
1302                         for(node= sce->nodetree->nodes.first; node; node= node->next)
1303                                 if(node->type==CMP_NODE_MOVIEDISTORTION)
1304                                         node->storage= newmclipadr(fd, node->storage);
1305                 }
1306         }
1307 }
1308
1309
1310 /* undo file support: add all library pointers in lookup */
1311 void blo_add_library_pointer_map(ListBase *mainlist, FileData *fd)
1312 {
1313         Main *ptr= mainlist->first;
1314         ListBase *lbarray[MAX_LIBARRAY];
1315         
1316         for(ptr= ptr->next; ptr; ptr= ptr->next) {
1317                 int i= set_listbasepointers(ptr, lbarray);
1318                 while(i--) {
1319                         ID *id;
1320                         for(id= lbarray[i]->first; id; id= id->next)
1321                                 oldnewmap_insert(fd->libmap, id, id, GS(id->name));
1322                 }
1323         }
1324 }
1325                 
1326
1327 /* ********** END OLD POINTERS ****************** */
1328 /* ********** READ FILE ****************** */
1329
1330 static void switch_endian_structs(struct SDNA *filesdna, BHead *bhead)
1331 {
1332         int blocksize, nblocks;
1333         char *data;
1334
1335         data= (char *)(bhead+1);
1336         blocksize= filesdna->typelens[ filesdna->structs[bhead->SDNAnr][0] ];
1337
1338         nblocks= bhead->nr;
1339         while(nblocks--) {
1340                 DNA_struct_switch_endian(filesdna, bhead->SDNAnr, data);
1341
1342                 data+= blocksize;
1343         }
1344 }
1345
1346 static void *read_struct(FileData *fd, BHead *bh, const char *blockname)
1347 {
1348         void *temp= NULL;
1349
1350         if (bh->len) {
1351                 /* switch is based on file dna */
1352                 if (bh->SDNAnr && (fd->flags & FD_FLAGS_SWITCH_ENDIAN))
1353                         switch_endian_structs(fd->filesdna, bh);
1354
1355                 if (fd->compflags[bh->SDNAnr]) {        /* flag==0: doesn't exist anymore */
1356                         if(fd->compflags[bh->SDNAnr]==2) {
1357                                 temp= DNA_struct_reconstruct(fd->memsdna, fd->filesdna, fd->compflags, bh->SDNAnr, bh->nr, (bh+1));
1358                         } else {
1359                                 temp= MEM_mallocN(bh->len, blockname);
1360                                 memcpy(temp, (bh+1), bh->len);
1361                         }
1362                 }
1363         }
1364
1365         return temp;
1366 }
1367
1368 static void link_list(FileData *fd, ListBase *lb)               /* only direct data */
1369 {
1370         Link *ln, *prev;
1371
1372         if(lb->first==NULL) return;
1373
1374         lb->first= newdataadr(fd, lb->first);
1375         ln= lb->first;
1376         prev= NULL;
1377         while(ln) {
1378                 ln->next= newdataadr(fd, ln->next);
1379                 ln->prev= prev;
1380                 prev= ln;
1381                 ln= ln->next;
1382         }
1383         lb->last= prev;
1384 }
1385
1386 static void link_glob_list(FileData *fd, ListBase *lb)          /* for glob data */
1387 {
1388         Link *ln, *prev;
1389         void *poin;
1390
1391         if(lb->first==NULL) return;
1392         poin= newdataadr(fd, lb->first);
1393         if(lb->first) {
1394                 oldnewmap_insert(fd->globmap, lb->first, poin, 0);
1395         }
1396         lb->first= poin;
1397
1398         ln= lb->first;
1399         prev= NULL;
1400         while(ln) {
1401                 poin= newdataadr(fd, ln->next);
1402                 if(ln->next) {
1403                         oldnewmap_insert(fd->globmap, ln->next, poin, 0);
1404                 }
1405                 ln->next= poin;
1406                 ln->prev= prev;
1407                 prev= ln;
1408                 ln= ln->next;
1409         }
1410         lb->last= prev;
1411 }
1412
1413 static void test_pointer_array(FileData *fd, void **mat)
1414 {
1415 #if defined(WIN32) && !defined(FREE_WINDOWS)
1416         __int64 *lpoin, *lmat;
1417 #else
1418         long long *lpoin, *lmat;
1419 #endif
1420         int *ipoin, *imat;
1421         size_t len;
1422
1423                 /* manually convert the pointer array in
1424                  * the old dna format to a pointer array in
1425                  * the new dna format.
1426                  */
1427         if(*mat) {
1428                 len= MEM_allocN_len(*mat)/fd->filesdna->pointerlen;
1429
1430                 if(fd->filesdna->pointerlen==8 && fd->memsdna->pointerlen==4) {
1431                         ipoin=imat= MEM_mallocN( len*4, "newmatar");
1432                         lpoin= *mat;
1433
1434                         while(len-- > 0) {
1435                                 if((fd->flags & FD_FLAGS_SWITCH_ENDIAN))
1436                                         SWITCH_LONGINT(*lpoin);
1437                                 *ipoin= (int) ((*lpoin) >> 3);
1438                                 ipoin++;
1439                                 lpoin++;
1440                         }
1441                         MEM_freeN(*mat);
1442                         *mat= imat;
1443                 }
1444
1445                 if(fd->filesdna->pointerlen==4 && fd->memsdna->pointerlen==8) {
1446                         lpoin=lmat= MEM_mallocN( len*8, "newmatar");
1447                         ipoin= *mat;
1448
1449                         while(len-- > 0) {
1450                                 *lpoin= *ipoin;
1451                                 ipoin++;
1452                                 lpoin++;
1453                         }
1454                         MEM_freeN(*mat);
1455                         *mat= lmat;
1456                 }
1457         }
1458 }
1459
1460 /* ************ READ ID Properties *************** */
1461
1462 static void IDP_DirectLinkProperty(IDProperty *prop, int switch_endian, FileData *fd);
1463 static void IDP_LibLinkProperty(IDProperty *prop, int switch_endian, FileData *fd);
1464
1465 static void IDP_DirectLinkIDPArray(IDProperty *prop, int switch_endian, FileData *fd)
1466 {
1467         IDProperty *array;
1468         int i;
1469
1470         /*since we didn't save the extra buffer, set totallen to len.*/
1471         prop->totallen = prop->len;
1472         prop->data.pointer = newdataadr(fd, prop->data.pointer);
1473
1474         array= (IDProperty*) prop->data.pointer;
1475         
1476         /* note!, idp-arrays didn't exist in 2.4x, so the pointer will be cleared
1477          * theres not really anything we can do to correct this, at least dont crash */
1478         if(array==NULL) {
1479                 prop->len= 0;
1480                 prop->totallen= 0;
1481         }
1482         
1483
1484         for(i=0; i<prop->len; i++)
1485                 IDP_DirectLinkProperty(&array[i], switch_endian, fd);
1486 }
1487
1488 static void IDP_DirectLinkArray(IDProperty *prop, int switch_endian, FileData *fd)
1489 {
1490         IDProperty **array;
1491         int i;
1492
1493         /*since we didn't save the extra buffer, set totallen to len.*/
1494         prop->totallen = prop->len;
1495         prop->data.pointer = newdataadr(fd, prop->data.pointer);
1496
1497         if(prop->subtype == IDP_GROUP) {
1498                 test_pointer_array(fd, prop->data.pointer);
1499                 array= prop->data.pointer;
1500
1501                 for(i=0; i<prop->len; i++)
1502                         IDP_DirectLinkProperty(array[i], switch_endian, fd);
1503         }
1504         else if(prop->subtype == IDP_DOUBLE) {
1505                 if (switch_endian) {
1506                         for (i=0; i<prop->len; i++) {
1507                                 SWITCH_LONGINT(((double*)prop->data.pointer)[i]);
1508                         }
1509                 }
1510         }
1511         else {
1512                 if (switch_endian) {
1513                         for (i=0; i<prop->len; i++) {
1514                                 SWITCH_INT(((int*)prop->data.pointer)[i]);
1515                         }
1516                 }
1517         }
1518 }
1519
1520 static void IDP_DirectLinkString(IDProperty *prop, FileData *fd)
1521 {
1522         /*since we didn't save the extra string buffer, set totallen to len.*/
1523         prop->totallen = prop->len;
1524         prop->data.pointer = newdataadr(fd, prop->data.pointer);
1525 }
1526
1527 static void IDP_DirectLinkGroup(IDProperty *prop, int switch_endian, FileData *fd)
1528 {
1529         ListBase *lb = &prop->data.group;
1530         IDProperty *loop;
1531
1532         link_list(fd, lb);
1533
1534         /*Link child id properties now*/
1535         for (loop=prop->data.group.first; loop; loop=loop->next) {
1536                 IDP_DirectLinkProperty(loop, switch_endian, fd);
1537         }
1538 }
1539
1540 static void IDP_DirectLinkProperty(IDProperty *prop, int switch_endian, FileData *fd)
1541 {
1542         switch (prop->type) {
1543                 case IDP_GROUP:
1544                         IDP_DirectLinkGroup(prop, switch_endian, fd);
1545                         break;
1546                 case IDP_STRING:
1547                         IDP_DirectLinkString(prop, fd);
1548                         break;
1549                 case IDP_ARRAY:
1550                         IDP_DirectLinkArray(prop, switch_endian, fd);
1551                         break;
1552                 case IDP_IDPARRAY:
1553                         IDP_DirectLinkIDPArray(prop, switch_endian, fd);
1554                         break;
1555                 case IDP_DOUBLE:
1556                         /*erg, stupid doubles.  since I'm storing them
1557                          in the same field as int val; val2 in the
1558                          IDPropertyData struct, they have to deal with
1559                          endianness specifically
1560                          
1561                          in theory, val and val2 would've already been swapped
1562                          if switch_endian is true, so we have to first unswap
1563                          them then reswap them as a single 64-bit entity.
1564                          */
1565                         
1566                         if (switch_endian) {
1567                                 SWITCH_INT(prop->data.val);
1568                                 SWITCH_INT(prop->data.val2);
1569                                 SWITCH_LONGINT(prop->data.val);
1570                         }
1571                         
1572                         break;
1573         }
1574 }
1575
1576 /*stub function*/
1577 static void IDP_LibLinkProperty(IDProperty *UNUSED(prop), int UNUSED(switch_endian), FileData *UNUSED(fd))
1578 {
1579 }
1580
1581 /* ************ READ CurveMapping *************** */
1582
1583 /* cuma itself has been read! */
1584 static void direct_link_curvemapping(FileData *fd, CurveMapping *cumap)
1585 {
1586         int a;
1587         
1588         /* flag seems to be able to hang? Maybe old files... not bad to clear anyway */
1589         cumap->flag &= ~CUMA_PREMULLED;
1590         
1591         for(a=0; a<CM_TOT; a++) {
1592                 cumap->cm[a].curve= newdataadr(fd, cumap->cm[a].curve);
1593                 cumap->cm[a].table= NULL;
1594                 cumap->cm[a].premultable= NULL;
1595         }
1596 }
1597
1598 /* ************ READ Brush *************** */
1599 /* library brush linking after fileread */
1600 static void lib_link_brush(FileData *fd, Main *main)
1601 {
1602         Brush *brush;
1603         
1604         /* only link ID pointers */
1605         for(brush= main->brush.first; brush; brush= brush->id.next) {
1606                 if(brush->id.flag & LIB_NEEDLINK) {
1607                         brush->id.flag -= LIB_NEEDLINK;
1608
1609                         brush->mtex.tex= newlibadr_us(fd, brush->id.lib, brush->mtex.tex);
1610                         brush->clone.image= newlibadr_us(fd, brush->id.lib, brush->clone.image);
1611                 }
1612         }
1613 }
1614
1615 static void direct_link_brush(FileData *fd, Brush *brush)
1616 {
1617         /* brush itself has been read */
1618
1619         /* fallof curve */
1620         brush->curve= newdataadr(fd, brush->curve);
1621         if(brush->curve)
1622                 direct_link_curvemapping(fd, brush->curve);
1623         else
1624                 brush_curve_preset(brush, CURVE_PRESET_SHARP);
1625
1626         brush->preview= NULL;
1627         brush->icon_imbuf= NULL;
1628 }
1629
1630 static void direct_link_script(FileData *UNUSED(fd), Script *script)
1631 {
1632         script->id.us = 1;
1633         SCRIPT_SET_NULL(script)
1634 }
1635
1636
1637 /* ************ READ PACKEDFILE *************** */
1638
1639 static PackedFile *direct_link_packedfile(FileData *fd, PackedFile *oldpf)
1640 {
1641         PackedFile *pf= newdataadr(fd, oldpf);
1642
1643         if (pf) {
1644                 pf->data= newdataadr(fd, pf->data);
1645         }
1646
1647         return pf;
1648 }
1649
1650 /* ************ READ IMAGE PREVIEW *************** */
1651
1652 static PreviewImage *direct_link_preview_image(FileData *fd, PreviewImage *old_prv)
1653 {
1654         PreviewImage *prv= newdataadr(fd, old_prv);
1655
1656         if (prv) {
1657                 int i;
1658                 for (i=0; i < NUM_ICON_SIZES; ++i) {
1659                         if (prv->rect[i]) {
1660                                 prv->rect[i] = newdataadr(fd, prv->rect[i]);
1661                         }
1662                 }
1663         }
1664
1665         return prv;
1666 }
1667
1668 /* ************ READ ANIMATION STUFF ***************** */
1669
1670 /* Legacy Data Support (for Version Patching) ----------------------------- */
1671
1672 // XXX depreceated - old animation system
1673 static void lib_link_ipo(FileData *fd, Main *main)
1674 {
1675         Ipo *ipo;
1676
1677         ipo= main->ipo.first;
1678         while(ipo) {
1679                 if(ipo->id.flag & LIB_NEEDLINK) {
1680                         IpoCurve *icu;
1681                         for(icu= ipo->curve.first; icu; icu= icu->next) {
1682                                 if(icu->driver)
1683                                         icu->driver->ob= newlibadr(fd, ipo->id.lib, icu->driver->ob);
1684                         }
1685                         ipo->id.flag -= LIB_NEEDLINK;
1686                 }
1687                 ipo= ipo->id.next;
1688         }
1689 }
1690
1691 // XXX depreceated - old animation system
1692 static void direct_link_ipo(FileData *fd, Ipo *ipo)
1693 {
1694         IpoCurve *icu;
1695
1696         link_list(fd, &(ipo->curve));
1697         icu= ipo->curve.first;
1698         while(icu) {
1699                 icu->bezt= newdataadr(fd, icu->bezt);
1700                 icu->bp= newdataadr(fd, icu->bp);
1701                 icu->driver= newdataadr(fd, icu->driver);
1702                 icu= icu->next;
1703         }
1704 }
1705
1706 // XXX depreceated - old animation system
1707 static void lib_link_nlastrips(FileData *fd, ID *id, ListBase *striplist)
1708 {
1709         bActionStrip *strip;
1710         bActionModifier *amod;
1711         
1712         for (strip=striplist->first; strip; strip=strip->next){
1713                 strip->object = newlibadr(fd, id->lib, strip->object);
1714                 strip->act = newlibadr_us(fd, id->lib, strip->act);
1715                 strip->ipo = newlibadr(fd, id->lib, strip->ipo);
1716                 for(amod= strip->modifiers.first; amod; amod= amod->next)
1717                         amod->ob= newlibadr(fd, id->lib, amod->ob);
1718         }
1719 }
1720
1721 // XXX depreceated - old animation system
1722 static void direct_link_nlastrips(FileData *fd, ListBase *strips)
1723 {
1724         bActionStrip *strip;
1725         
1726         link_list(fd, strips);
1727         
1728         for(strip= strips->first; strip; strip= strip->next)
1729                 link_list(fd, &strip->modifiers);
1730 }
1731
1732 // XXX depreceated - old animation system
1733 static void lib_link_constraint_channels(FileData *fd, ID *id, ListBase *chanbase)
1734 {
1735         bConstraintChannel *chan;
1736
1737         for (chan=chanbase->first; chan; chan=chan->next){
1738                 chan->ipo = newlibadr_us(fd, id->lib, chan->ipo);
1739         }
1740 }
1741
1742 /* Data Linking ----------------------------- */
1743
1744 static void lib_link_fmodifiers(FileData *fd, ID *id, ListBase *list)
1745 {
1746         FModifier *fcm;
1747         
1748         for (fcm= list->first; fcm; fcm= fcm->next) {
1749                 /* data for specific modifiers */
1750                 switch (fcm->type) {
1751                         case FMODIFIER_TYPE_PYTHON:
1752                         {
1753                                 FMod_Python *data= (FMod_Python *)fcm->data;
1754                                 data->script = newlibadr(fd, id->lib, data->script);
1755                         }
1756                                 break;
1757                 }
1758         }
1759 }
1760
1761 static void lib_link_fcurves(FileData *fd, ID *id, ListBase *list) 
1762 {
1763         FCurve *fcu;
1764         
1765         if (list == NULL)
1766                 return;
1767         
1768         /* relink ID-block references... */
1769         for (fcu= list->first; fcu; fcu= fcu->next) {
1770                 /* driver data */
1771                 if (fcu->driver) {
1772                         ChannelDriver *driver= fcu->driver;
1773                         DriverVar *dvar;
1774                         
1775                         for (dvar= driver->variables.first; dvar; dvar= dvar->next) {
1776                                 DRIVER_TARGETS_LOOPER(dvar)
1777                                 {       
1778                                         /* only relink if still used */
1779                                         if (tarIndex < dvar->num_targets)
1780                                                 dtar->id= newlibadr(fd, id->lib, dtar->id); 
1781                                         else
1782                                                 dtar->id= NULL;
1783                                 }
1784                                 DRIVER_TARGETS_LOOPER_END
1785                         }
1786                 }
1787                 
1788                 /* modifiers */
1789                 lib_link_fmodifiers(fd, id, &fcu->modifiers);
1790         }
1791 }
1792
1793
1794 /* NOTE: this assumes that link_list has already been called on the list */
1795 static void direct_link_fmodifiers(FileData *fd, ListBase *list)
1796 {
1797         FModifier *fcm;
1798         
1799         for (fcm= list->first; fcm; fcm= fcm->next) {
1800                 /* relink general data */
1801                 fcm->data = newdataadr(fd, fcm->data);
1802                 fcm->edata= NULL;
1803                 
1804                 /* do relinking of data for specific types */
1805                 switch (fcm->type) {
1806                         case FMODIFIER_TYPE_GENERATOR:
1807                         {
1808                                 FMod_Generator *data= (FMod_Generator *)fcm->data;
1809                                 
1810                                 data->coefficients= newdataadr(fd, data->coefficients);
1811
1812                                 if(fd->flags & FD_FLAGS_SWITCH_ENDIAN) {
1813                                         unsigned int a;
1814                                         for(a = 0; a < data->arraysize; a++)
1815                                                 SWITCH_INT(data->coefficients[a]);
1816                                 }
1817                         }
1818                                 break;
1819                         case FMODIFIER_TYPE_ENVELOPE:
1820                         {
1821                                 FMod_Envelope *data= (FMod_Envelope *)fcm->data;
1822                                 
1823                                 data->data= newdataadr(fd, data->data);
1824                         }
1825                                 break;
1826                         case FMODIFIER_TYPE_PYTHON:
1827                         {
1828                                 FMod_Python *data= (FMod_Python *)fcm->data;
1829                                 
1830                                 data->prop = newdataadr(fd, data->prop);
1831                                 IDP_DirectLinkProperty(data->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
1832                         }
1833                                 break;
1834                 }
1835         }
1836 }
1837
1838 /* NOTE: this assumes that link_list has already been called on the list */
1839 static void direct_link_fcurves(FileData *fd, ListBase *list)
1840 {
1841         FCurve *fcu;
1842         
1843         /* link F-Curve data to F-Curve again (non ID-libs) */
1844         for (fcu= list->first; fcu; fcu= fcu->next) {
1845                 /* curve data */
1846                 fcu->bezt= newdataadr(fd, fcu->bezt);
1847                 fcu->fpt= newdataadr(fd, fcu->fpt);
1848                 
1849                 /* rna path */
1850                 fcu->rna_path= newdataadr(fd, fcu->rna_path);
1851                 
1852                 /* group */
1853                 fcu->grp= newdataadr(fd, fcu->grp);
1854                 
1855                 /* driver */
1856                 fcu->driver= newdataadr(fd, fcu->driver);
1857                 if (fcu->driver) {
1858                         ChannelDriver *driver= fcu->driver;
1859                         DriverVar *dvar;
1860
1861                         driver->expr_comp= NULL;
1862                         
1863                         /* relink variables, targets and their paths */
1864                         link_list(fd, &driver->variables);
1865                         for (dvar= driver->variables.first; dvar; dvar= dvar->next) {
1866                                 DRIVER_TARGETS_LOOPER(dvar)
1867                                 {
1868                                         /* only relink the targets being used */
1869                                         if (tarIndex < dvar->num_targets)
1870                                                 dtar->rna_path= newdataadr(fd, dtar->rna_path);
1871                                         else
1872                                                 dtar->rna_path= NULL;
1873                                 }
1874                                 DRIVER_TARGETS_LOOPER_END
1875                         }
1876                 }
1877                 
1878                 /* modifiers */
1879                 link_list(fd, &fcu->modifiers);
1880                 direct_link_fmodifiers(fd, &fcu->modifiers);
1881         }
1882 }
1883
1884
1885 static void lib_link_action(FileData *fd, Main *main)
1886 {
1887         bAction *act;
1888         bActionChannel *chan;
1889
1890         for (act= main->action.first; act; act= act->id.next) {
1891                 if (act->id.flag & LIB_NEEDLINK) {
1892                         act->id.flag -= LIB_NEEDLINK;
1893                         
1894 // XXX depreceated - old animation system <<<
1895                         for (chan=act->chanbase.first; chan; chan=chan->next) {
1896                                 chan->ipo= newlibadr_us(fd, act->id.lib, chan->ipo);
1897                                 lib_link_constraint_channels(fd, &act->id, &chan->constraintChannels);
1898                         }
1899 // >>> XXX depreceated - old animation system
1900                         
1901                         lib_link_fcurves(fd, &act->id, &act->curves);
1902                 }
1903         }
1904 }
1905
1906 static void direct_link_action(FileData *fd, bAction *act)
1907 {
1908         bActionChannel *achan; // XXX depreceated - old animation system
1909         bActionGroup *agrp;
1910
1911         link_list(fd, &act->curves);
1912         link_list(fd, &act->chanbase); // XXX depreceated - old animation system
1913         link_list(fd, &act->groups);
1914         link_list(fd, &act->markers);
1915
1916 // XXX depreceated - old animation system <<<
1917         for (achan = act->chanbase.first; achan; achan=achan->next) {
1918                 achan->grp= newdataadr(fd, achan->grp);
1919                 
1920                 link_list(fd, &achan->constraintChannels);
1921         }
1922 // >>> XXX depreceated - old animation system
1923
1924         direct_link_fcurves(fd, &act->curves);
1925         
1926         for (agrp = act->groups.first; agrp; agrp= agrp->next) {
1927                 agrp->channels.first= newdataadr(fd, agrp->channels.first);
1928                 agrp->channels.last= newdataadr(fd, agrp->channels.last);
1929         }
1930 }
1931
1932 static void lib_link_nladata_strips(FileData *fd, ID *id, ListBase *list)
1933 {
1934         NlaStrip *strip;
1935         
1936         for (strip= list->first; strip; strip= strip->next) {
1937                 /* check strip's children */
1938                 lib_link_nladata_strips(fd, id, &strip->strips);
1939                 
1940                 /* check strip's F-Curves */
1941                 lib_link_fcurves(fd, id, &strip->fcurves);
1942                 
1943                 /* reassign the counted-reference to action */
1944                 strip->act = newlibadr_us(fd, id->lib, strip->act);
1945                 
1946                 /* fix action id-root (i.e. if it comes from a pre 2.57 .blend file) */
1947                 if ((strip->act) && (strip->act->idroot == 0))
1948                         strip->act->idroot = GS(id->name);
1949         }
1950 }
1951
1952 static void lib_link_nladata(FileData *fd, ID *id, ListBase *list)
1953 {
1954         NlaTrack *nlt;
1955         
1956         /* we only care about the NLA strips inside the tracks */
1957         for (nlt= list->first; nlt; nlt= nlt->next) {
1958                 lib_link_nladata_strips(fd, id, &nlt->strips);
1959         }
1960 }
1961
1962 /* This handles Animato NLA-Strips linking 
1963  * NOTE: this assumes that link_list has already been called on the list 
1964  */
1965 static void direct_link_nladata_strips(FileData *fd, ListBase *list)
1966 {
1967         NlaStrip *strip;
1968         
1969         for (strip= list->first; strip; strip= strip->next) {
1970                 /* strip's child strips */
1971                 link_list(fd, &strip->strips);
1972                 direct_link_nladata_strips(fd, &strip->strips);
1973                 
1974                 /* strip's F-Curves */
1975                 link_list(fd, &strip->fcurves);
1976                 direct_link_fcurves(fd, &strip->fcurves);
1977                 
1978                 /* strip's F-Modifiers */
1979                 link_list(fd, &strip->modifiers);
1980                 direct_link_modifiers(fd, &strip->modifiers);
1981         }
1982 }
1983
1984 /* NOTE: this assumes that link_list has already been called on the list */
1985 static void direct_link_nladata(FileData *fd, ListBase *list)
1986 {
1987         NlaTrack *nlt;
1988         
1989         for (nlt= list->first; nlt; nlt= nlt->next) {
1990                 /* relink list of strips */
1991                 link_list(fd, &nlt->strips);
1992                 
1993                 /* relink strip data */
1994                 direct_link_nladata_strips(fd, &nlt->strips);
1995         }
1996 }
1997
1998 /* ------- */
1999
2000 static void lib_link_keyingsets(FileData *fd, ID *id, ListBase *list)
2001 {
2002         KeyingSet *ks;
2003         KS_Path *ksp;
2004         
2005         /* here, we're only interested in the ID pointer stored in some of the paths */
2006         for (ks= list->first; ks; ks= ks->next) {
2007                 for (ksp= ks->paths.first; ksp; ksp= ksp->next) {
2008                         ksp->id= newlibadr(fd, id->lib, ksp->id); 
2009                 }
2010         }
2011 }
2012
2013 /* NOTE: this assumes that link_list has already been called on the list */
2014 static void direct_link_keyingsets(FileData *fd, ListBase *list)
2015 {
2016         KeyingSet *ks;
2017         KS_Path *ksp;
2018         
2019         /* link KeyingSet data to KeyingSet again (non ID-libs) */
2020         for (ks= list->first; ks; ks= ks->next) {
2021                 /* paths */
2022                 link_list(fd, &ks->paths);
2023                 
2024                 for (ksp= ks->paths.first; ksp; ksp= ksp->next) {
2025                         /* rna path */
2026                         ksp->rna_path= newdataadr(fd, ksp->rna_path);
2027                 }
2028         }
2029 }
2030
2031 /* ------- */
2032
2033 static void lib_link_animdata(FileData *fd, ID *id, AnimData *adt)
2034 {
2035         if (adt == NULL)
2036                 return;
2037         
2038         /* link action data */
2039         adt->action= newlibadr_us(fd, id->lib, adt->action);
2040         adt->tmpact= newlibadr_us(fd, id->lib, adt->tmpact);
2041         
2042         /* fix action id-roots (i.e. if they come from a pre 2.57 .blend file) */
2043         if ((adt->action) && (adt->action->idroot == 0))
2044                 adt->action->idroot = GS(id->name);
2045         if ((adt->tmpact) && (adt->tmpact->idroot == 0))
2046                 adt->tmpact->idroot = GS(id->name);
2047         
2048         /* link drivers */
2049         lib_link_fcurves(fd, id, &adt->drivers);
2050         
2051         /* overrides don't have lib-link for now, so no need to do anything */
2052         
2053         /* link NLA-data */
2054         lib_link_nladata(fd, id, &adt->nla_tracks);
2055 }
2056
2057 static void direct_link_animdata(FileData *fd, AnimData *adt)
2058 {
2059         /* NOTE: must have called newdataadr already before doing this... */
2060         if (adt == NULL)
2061                 return;
2062         
2063         /* link drivers */
2064         link_list(fd, &adt->drivers);
2065         direct_link_fcurves(fd, &adt->drivers);
2066         
2067         /* link overrides */
2068         // TODO...
2069         
2070         /* link NLA-data */
2071         link_list(fd, &adt->nla_tracks);
2072         direct_link_nladata(fd, &adt->nla_tracks);
2073         
2074         /* relink active strip - even though strictly speaking this should only be used
2075          * if we're in 'tweaking mode', we need to be able to have this loaded back for
2076          * undo, but also since users may not exit tweakmode before saving (#24535)
2077          */
2078         // TODO: it's not really nice that anyone should be able to save the file in this
2079         //              state, but it's going to be too hard to enforce this single case...
2080         adt->actstrip= newdataadr(fd, adt->actstrip);
2081 }       
2082
2083 /* ************ READ MOTION PATHS *************** */
2084
2085 /* direct data for cache */
2086 static void direct_link_motionpath(FileData *fd, bMotionPath *mpath)
2087 {
2088         /* sanity check */
2089         if (mpath == NULL)
2090                 return;
2091         
2092         /* relink points cache */
2093         mpath->points= newdataadr(fd, mpath->points);
2094 }
2095
2096 /* ************ READ NODE TREE *************** */
2097
2098 /* singe node tree (also used for material/scene trees), ntree is not NULL */
2099 static void lib_link_ntree(FileData *fd, ID *id, bNodeTree *ntree)
2100 {
2101         bNode *node;
2102         
2103         if(ntree->adt) lib_link_animdata(fd, &ntree->id, ntree->adt);
2104         
2105         ntree->gpd= newlibadr_us(fd, id->lib, ntree->gpd);
2106         
2107         for(node= ntree->nodes.first; node; node= node->next)
2108                 node->id= newlibadr_us(fd, id->lib, node->id);
2109 }
2110
2111 /* library ntree linking after fileread */
2112 static void lib_link_nodetree(FileData *fd, Main *main)
2113 {
2114         bNodeTree *ntree;
2115         
2116         /* only link ID pointers */
2117         for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next) {
2118                 if(ntree->id.flag & LIB_NEEDLINK) {
2119                         ntree->id.flag -= LIB_NEEDLINK;
2120                         lib_link_ntree(fd, &ntree->id, ntree);
2121                 }
2122         }
2123 }
2124
2125 static void lib_nodetree_init_types_cb(void *UNUSED(data), ID *UNUSED(id), bNodeTree *ntree)
2126 {
2127         bNode *node;
2128         
2129         ntreeInitTypes(ntree);
2130         
2131         /* XXX could be replaced by do_versions for new nodes */
2132         for (node=ntree->nodes.first; node; node=node->next)
2133                 node_verify_socket_templates(ntree, node);
2134 }
2135
2136 /* updates group node socket own_index so that
2137  * external links to/from the group node are preserved.
2138  */
2139 static void lib_node_do_versions_group_indices(bNode *gnode)
2140 {
2141         bNodeTree *ngroup= (bNodeTree*)gnode->id;
2142         bNode *intnode;
2143         bNodeSocket *sock, *gsock, *intsock;
2144         int found;
2145         
2146         for (sock=gnode->outputs.first; sock; sock=sock->next) {
2147                 int old_index = sock->to_index;
2148                 for (gsock=ngroup->outputs.first; gsock; gsock=gsock->next) {
2149                         if (gsock->link && gsock->link->fromsock->own_index == old_index) {
2150                                 sock->own_index = gsock->own_index;
2151                                 break;
2152                         }
2153                 }
2154         }
2155         for (sock=gnode->inputs.first; sock; sock=sock->next) {
2156                 int old_index = sock->to_index;
2157                 /* can't use break in double loop */
2158                 found = 0;
2159                 for (intnode=ngroup->nodes.first; intnode && !found; intnode=intnode->next) {
2160                         for (intsock=intnode->inputs.first; intsock; intsock=intsock->next) {
2161                                 if (intsock->own_index == old_index && intsock->link) {
2162                                         sock->own_index = intsock->link->fromsock->own_index;
2163                                         found = 1;
2164                                         break;
2165                                 }
2166                         }
2167                 }
2168         }
2169 }
2170
2171 /* updates external links for all group nodes in a tree */
2172 static void lib_nodetree_do_versions_group_indices_cb(void *UNUSED(data), ID *UNUSED(id), bNodeTree *ntree)
2173 {
2174         bNode *node;
2175         
2176         for (node=ntree->nodes.first; node; node=node->next) {
2177                 if (node->type==NODE_GROUP) {
2178                         bNodeTree *ngroup= (bNodeTree*)node->id;
2179                         if (ngroup && (ngroup->flag & NTREE_DO_VERSIONS_GROUP_EXPOSE))
2180                                 lib_node_do_versions_group_indices(node);
2181                 }
2182         }
2183 }
2184
2185 /* make an update call for the tree */
2186 static void lib_nodetree_do_versions_update_cb(void *UNUSED(data), ID *UNUSED(id), bNodeTree *ntree)
2187 {
2188         if (ntree->update)
2189                 ntreeUpdateTree(ntree);
2190 }
2191
2192 /* verify types for nodes and groups, all data has to be read */
2193 /* open = 0: appending/linking, open = 1: open new file (need to clean out dynamic
2194 * typedefs*/
2195 static void lib_verify_nodetree(Main *main, int UNUSED(open))
2196 {
2197         bNodeTree *ntree;
2198         int i;
2199         bNodeTreeType *ntreetype;
2200
2201         /* this crashes blender on undo/redo
2202                 if(open==1) {
2203                         reinit_nodesystem();
2204                 }*/
2205         
2206         /* set node->typeinfo pointers */
2207         for (i=0; i < NUM_NTREE_TYPES; ++i) {
2208                 ntreetype= ntreeGetType(i);
2209                 if (ntreetype && ntreetype->foreach_nodetree)
2210                         ntreetype->foreach_nodetree(main, NULL, lib_nodetree_init_types_cb);
2211         }
2212         for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next)
2213                 lib_nodetree_init_types_cb(NULL, NULL, ntree);
2214         
2215         {
2216                 int has_old_groups=0;
2217                 /* XXX this should actually be part of do_versions, but since we need
2218                  * finished library linking, it is not possible there. Instead in do_versions
2219                  * we have set the NTREE_DO_VERSIONS flag, so at this point we can do the
2220                  * actual group node updates.
2221                  */
2222                 for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next) {
2223                         if (ntree->flag & NTREE_DO_VERSIONS_GROUP_EXPOSE) {
2224                                 /* this adds copies and links from all unlinked internal sockets to group inputs/outputs. */
2225                                 node_group_expose_all_sockets(ntree);
2226                                 has_old_groups = 1;
2227                         }
2228                 }
2229                 
2230                 if (has_old_groups) {
2231                         for (i=0; i < NUM_NTREE_TYPES; ++i) {
2232                                 ntreetype= ntreeGetType(i);
2233                                 if (ntreetype && ntreetype->foreach_nodetree)
2234                                         ntreetype->foreach_nodetree(main, NULL, lib_nodetree_do_versions_group_indices_cb);
2235                         }
2236                 }
2237                 
2238                 for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next)
2239                         ntree->flag &= ~NTREE_DO_VERSIONS_GROUP_EXPOSE;
2240         }
2241         
2242         /* verify all group user nodes */
2243         for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next) {
2244                 ntreeVerifyNodes(main, &ntree->id);
2245         }
2246         
2247         /* make update calls where necessary */
2248         {
2249                 for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next)
2250                         if (ntree->update)
2251                                 ntreeUpdateTree(ntree);
2252
2253                 for (i=0; i < NUM_NTREE_TYPES; ++i) {
2254                         ntreetype= ntreeGetType(i);
2255                         if (ntreetype && ntreetype->foreach_nodetree)
2256                                 ntreetype->foreach_nodetree(main, NULL, lib_nodetree_do_versions_update_cb);
2257                 }
2258         }
2259 }
2260
2261 static void direct_link_node_socket(FileData *fd, bNodeSocket *sock)
2262 {
2263         sock->link= newdataadr(fd, sock->link);
2264         sock->storage= newdataadr(fd, sock->storage);
2265         sock->default_value= newdataadr(fd, sock->default_value);
2266         sock->cache= NULL;
2267 }
2268
2269 /* ntree itself has been read! */
2270 static void direct_link_nodetree(FileData *fd, bNodeTree *ntree)
2271 {
2272         /* note: writing and reading goes in sync, for speed */
2273         bNode *node;
2274         bNodeSocket *sock;
2275         bNodeLink *link;
2276         
2277         ntree->init= 0;         /* to set callbacks and force setting types */
2278         ntree->progress= NULL;
2279         ntree->execdata= NULL;
2280         
2281         ntree->adt= newdataadr(fd, ntree->adt);
2282         direct_link_animdata(fd, ntree->adt);
2283         
2284         link_list(fd, &ntree->nodes);
2285         for(node= ntree->nodes.first; node; node= node->next) {
2286                 if(node->type == NODE_DYNAMIC) {
2287                         node->custom1= 0;
2288                         node->custom1= BSET(node->custom1, NODE_DYNAMIC_LOADED);
2289                 }
2290
2291                 node->typeinfo= NULL;
2292                 
2293                 link_list(fd, &node->inputs);
2294                 link_list(fd, &node->outputs);
2295                 
2296                 if(node->type == CMP_NODE_MOVIEDISTORTION) {
2297                         node->storage= newmclipadr(fd, node->storage);
2298                 } else
2299                         node->storage= newdataadr(fd, node->storage);
2300
2301                 if(node->storage) {
2302                         /* could be handlerized at some point */
2303                         if(ntree->type==NTREE_SHADER && (node->type==SH_NODE_CURVE_VEC || node->type==SH_NODE_CURVE_RGB))
2304                                 direct_link_curvemapping(fd, node->storage);
2305                         else if(ntree->type==NTREE_COMPOSIT) {
2306                                 if( ELEM4(node->type, CMP_NODE_TIME, CMP_NODE_CURVE_VEC, CMP_NODE_CURVE_RGB, CMP_NODE_HUECORRECT))
2307                                         direct_link_curvemapping(fd, node->storage);
2308                                 else if(ELEM3(node->type, CMP_NODE_IMAGE, CMP_NODE_VIEWER, CMP_NODE_SPLITVIEWER))
2309                                         ((ImageUser *)node->storage)->ok= 1;
2310                         }
2311                         else if( ntree->type==NTREE_TEXTURE) {
2312                                 if(node->type==TEX_NODE_CURVE_RGB || node->type==TEX_NODE_CURVE_TIME)
2313                                         direct_link_curvemapping(fd, node->storage);
2314                                 else if(node->type==TEX_NODE_IMAGE)
2315                                         ((ImageUser *)node->storage)->ok= 1;
2316                         }
2317                 }
2318         }
2319         link_list(fd, &ntree->links);
2320         
2321         /* external sockets */
2322         link_list(fd, &ntree->inputs);
2323         link_list(fd, &ntree->outputs);
2324         
2325         /* and we connect the rest */
2326         for(node= ntree->nodes.first; node; node= node->next) {
2327                 node->parent = newdataadr(fd, node->parent);
2328                 node->preview= newimaadr(fd, node->preview);
2329                 node->lasty= 0;
2330                 
2331                 for(sock= node->inputs.first; sock; sock= sock->next)
2332                         direct_link_node_socket(fd, sock);
2333                 for(sock= node->outputs.first; sock; sock= sock->next)
2334                         direct_link_node_socket(fd, sock);
2335         }
2336         for(sock= ntree->inputs.first; sock; sock= sock->next)
2337                 direct_link_node_socket(fd, sock);
2338         for(sock= ntree->outputs.first; sock; sock= sock->next)
2339                 direct_link_node_socket(fd, sock);
2340         
2341         for(link= ntree->links.first; link; link= link->next) {
2342                 link->fromnode= newdataadr(fd, link->fromnode);
2343                 link->tonode= newdataadr(fd, link->tonode);
2344                 link->fromsock= newdataadr(fd, link->fromsock);
2345                 link->tosock= newdataadr(fd, link->tosock);
2346         }
2347         
2348         /* type verification is in lib-link */
2349 }
2350
2351 /* ************ READ ARMATURE ***************** */
2352
2353 /* temp struct used to transport needed info to lib_link_constraint_cb() */
2354 typedef struct tConstraintLinkData {
2355         FileData *fd;
2356         ID *id;
2357 } tConstraintLinkData;
2358 /* callback function used to relink constraint ID-links */
2359 static void lib_link_constraint_cb(bConstraint *UNUSED(con), ID **idpoin, void *userdata)
2360 {
2361         tConstraintLinkData *cld= (tConstraintLinkData *)userdata;
2362         *idpoin = newlibadr(cld->fd, cld->id->lib, *idpoin);
2363 }
2364
2365 static void lib_link_constraints(FileData *fd, ID *id, ListBase *conlist)
2366 {
2367         tConstraintLinkData cld;
2368         bConstraint *con;
2369         
2370         /* legacy fixes */
2371         for (con = conlist->first; con; con=con->next) {
2372                 /* patch for error introduced by changing constraints (dunno how) */
2373                 /* if con->data type changes, dna cannot resolve the pointer! (ton) */
2374                 if(con->data==NULL) {
2375                         con->type= CONSTRAINT_TYPE_NULL;
2376                 }
2377                 /* own ipo, all constraints have it */
2378                 con->ipo= newlibadr_us(fd, id->lib, con->ipo); // XXX depreceated - old animation system
2379         }
2380         
2381         /* relink all ID-blocks used by the constraints */
2382         cld.fd= fd;
2383         cld.id= id;
2384         
2385         id_loop_constraints(conlist, lib_link_constraint_cb, &cld);
2386 }
2387
2388 static void direct_link_constraints(FileData *fd, ListBase *lb)
2389 {
2390         bConstraint *con;
2391
2392         link_list(fd, lb);
2393         for (con=lb->first; con; con=con->next) {
2394                 con->data = newdataadr(fd, con->data);
2395                 
2396                 switch (con->type) {
2397                         case CONSTRAINT_TYPE_PYTHON:
2398                         {
2399                                 bPythonConstraint *data= con->data;
2400                                 
2401                                 link_list(fd, &data->targets);
2402                                 
2403                                 data->prop = newdataadr(fd, data->prop);
2404                                 if (data->prop)
2405                                         IDP_DirectLinkProperty(data->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
2406                         }
2407                                 break;
2408                         case CONSTRAINT_TYPE_SPLINEIK:
2409                         {
2410                                 bSplineIKConstraint *data= con->data;
2411                                 
2412                                 data->points= newdataadr(fd, data->points);
2413                         }
2414                                 break;
2415                         case CONSTRAINT_TYPE_KINEMATIC:
2416                         {
2417                                 con->lin_error = 0.f;
2418                                 con->rot_error = 0.f;
2419                         }
2420                         case CONSTRAINT_TYPE_CHILDOF:
2421                         {
2422                                 /* XXX version patch, in older code this flag wasn't always set, and is inherent to type */
2423                                 if(con->ownspace == CONSTRAINT_SPACE_POSE)
2424                                         con->flag |= CONSTRAINT_SPACEONCE;
2425                         }
2426                                 break;
2427                 }
2428         }
2429 }
2430
2431 static void lib_link_pose(FileData *fd, Object *ob, bPose *pose)
2432 {
2433         bPoseChannel *pchan;
2434         bArmature *arm= ob->data;
2435         int rebuild;
2436         
2437         if (!pose || !arm)
2438                 return;
2439         
2440
2441         /* always rebuild to match proxy or lib changes */
2442         rebuild= ob->proxy || (ob->id.lib==NULL && arm->id.lib);
2443
2444         if(ob->proxy) {
2445                 /* sync proxy layer */
2446                 if(pose->proxy_layer)
2447                         arm->layer = pose->proxy_layer;
2448                 
2449                 /* sync proxy active bone */
2450                 if(pose->proxy_act_bone[0]) {
2451                         Bone *bone = get_named_bone(arm, pose->proxy_act_bone);
2452                         if (bone)
2453                                 arm->act_bone = bone;
2454                 }
2455         }
2456
2457         for (pchan = pose->chanbase.first; pchan; pchan=pchan->next) {
2458                 lib_link_constraints(fd, (ID *)ob, &pchan->constraints);
2459                 
2460                 /* hurms... loop in a loop, but yah... later... (ton) */
2461                 pchan->bone= get_named_bone(arm, pchan->name);
2462                 
2463                 pchan->custom= newlibadr_us(fd, arm->id.lib, pchan->custom);
2464                 if(pchan->bone==NULL)
2465                         rebuild= 1;
2466                 else if(ob->id.lib==NULL && arm->id.lib) {
2467                         /* local pose selection copied to armature, bit hackish */
2468                         pchan->bone->flag &= ~BONE_SELECTED;
2469                         pchan->bone->flag |= pchan->selectflag;
2470                 }
2471         }
2472         
2473         if(rebuild) {
2474                 ob->recalc= OB_RECALC_OB|OB_RECALC_DATA|OB_RECALC_TIME;
2475                 pose->flag |= POSE_RECALC;
2476         }
2477 }
2478
2479 static void lib_link_armature(FileData *fd, Main *main)
2480 {
2481         bArmature *arm;
2482
2483         arm= main->armature.first;
2484
2485         while(arm) {
2486                 if(arm->id.flag & LIB_NEEDLINK) {
2487                         if (arm->adt) lib_link_animdata(fd, &arm->id, arm->adt);
2488                         arm->id.flag -= LIB_NEEDLINK;
2489                 }
2490                 arm= arm->id.next;
2491         }
2492 }
2493
2494 static void direct_link_bones(FileData *fd, Bone* bone)
2495 {
2496         Bone    *child;
2497
2498         bone->parent= newdataadr(fd, bone->parent);
2499         bone->prop= newdataadr(fd, bone->prop);
2500         if(bone->prop)
2501                 IDP_DirectLinkProperty(bone->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
2502                 
2503         bone->flag &= ~BONE_DRAW_ACTIVE;
2504
2505         link_list(fd, &bone->childbase);
2506
2507         for(child=bone->childbase.first; child; child=child->next)
2508                 direct_link_bones(fd, child);
2509 }
2510
2511 static void direct_link_armature(FileData *fd, bArmature *arm)
2512 {
2513         Bone    *bone;
2514
2515         link_list(fd, &arm->bonebase);
2516         arm->edbo= NULL;
2517         arm->sketch = NULL;
2518         
2519         arm->adt= newdataadr(fd, arm->adt);
2520         direct_link_animdata(fd, arm->adt);
2521         
2522         bone=arm->bonebase.first;
2523         while (bone) {
2524                 direct_link_bones(fd, bone);
2525                 bone=bone->next;
2526         }
2527
2528         arm->act_bone= newdataadr(fd, arm->act_bone);
2529         arm->act_edbone= NULL;
2530 }
2531
2532 /* ************ READ CAMERA ***************** */
2533
2534 static void lib_link_camera(FileData *fd, Main *main)
2535 {
2536         Camera *ca;
2537
2538         ca= main->camera.first;
2539         while(ca) {
2540                 if(ca->id.flag & LIB_NEEDLINK) {
2541                         if (ca->adt) lib_link_animdata(fd, &ca->id, ca->adt);
2542                         
2543                         ca->ipo= newlibadr_us(fd, ca->id.lib, ca->ipo); // XXX depreceated - old animation system
2544                         
2545                         ca->dof_ob= newlibadr_us(fd, ca->id.lib, ca->dof_ob);
2546                         
2547                         ca->id.flag -= LIB_NEEDLINK;
2548                 }
2549                 ca= ca->id.next;
2550         }
2551 }
2552
2553 static void direct_link_camera(FileData *fd, Camera *ca)
2554 {
2555         ca->adt= newdataadr(fd, ca->adt);
2556         direct_link_animdata(fd, ca->adt);
2557 }
2558
2559
2560 /* ************ READ LAMP ***************** */
2561
2562 static void lib_link_lamp(FileData *fd, Main *main)
2563 {
2564         Lamp *la;
2565         MTex *mtex;
2566         int a;
2567
2568         la= main->lamp.first;
2569         while(la) {
2570                 if(la->id.flag & LIB_NEEDLINK) {
2571                         if (la->adt) lib_link_animdata(fd, &la->id, la->adt);
2572                         
2573                         for(a=0; a<MAX_MTEX; a++) {
2574                                 mtex= la->mtex[a];
2575                                 if(mtex) {
2576                                         mtex->tex= newlibadr_us(fd, la->id.lib, mtex->tex);
2577                                         mtex->object= newlibadr(fd, la->id.lib, mtex->object);
2578                                 }
2579                         }
2580                         
2581                         la->ipo= newlibadr_us(fd, la->id.lib, la->ipo); // XXX depreceated - old animation system
2582
2583                         if(la->nodetree)
2584                                 lib_link_ntree(fd, &la->id, la->nodetree);
2585                         
2586                         la->id.flag -= LIB_NEEDLINK;
2587                 }
2588                 la= la->id.next;
2589         }
2590 }
2591
2592 static void direct_link_lamp(FileData *fd, Lamp *la)
2593 {
2594         int a;
2595         
2596         la->adt= newdataadr(fd, la->adt);
2597         direct_link_animdata(fd, la->adt);
2598
2599         for(a=0; a<MAX_MTEX; a++) {
2600                 la->mtex[a]= newdataadr(fd, la->mtex[a]);
2601         }
2602         
2603         la->curfalloff= newdataadr(fd, la->curfalloff);
2604         if(la->curfalloff)
2605                 direct_link_curvemapping(fd, la->curfalloff);
2606
2607         la->nodetree= newdataadr(fd, la->nodetree);
2608         if(la->nodetree)
2609                 direct_link_nodetree(fd, la->nodetree);
2610         
2611         la->preview = direct_link_preview_image(fd, la->preview);
2612 }
2613
2614 /* ************ READ keys ***************** */
2615
2616 static void lib_link_key(FileData *fd, Main *main)
2617 {
2618         Key *key;
2619
2620         key= main->key.first;
2621         while(key) {
2622                 if(key->id.flag & LIB_NEEDLINK) {
2623                         if(key->adt) lib_link_animdata(fd, &key->id, key->adt);
2624                         
2625                         key->ipo= newlibadr_us(fd, key->id.lib, key->ipo); // XXX depreceated - old animation system
2626                         key->from= newlibadr(fd, key->id.lib, key->from);
2627
2628                         key->id.flag -= LIB_NEEDLINK;
2629                 }
2630                 key= key->id.next;
2631         }
2632 }
2633
2634 static void switch_endian_keyblock(Key *key, KeyBlock *kb)
2635 {
2636         int elemsize, a, b;
2637         char *data, *poin, *cp;
2638
2639         elemsize= key->elemsize;
2640         data= kb->data;
2641
2642         for(a=0; a<kb->totelem; a++) {
2643
2644                 cp= key->elemstr;
2645                 poin= data;
2646
2647                 while( cp[0] ) {        /* cp[0]==amount */
2648
2649                         switch(cp[1]) {         /* cp[1]= type */
2650                         case IPO_FLOAT:
2651                         case IPO_BPOINT:
2652                         case IPO_BEZTRIPLE:
2653                                 b= cp[0];
2654                                 while(b--) {
2655                                         SWITCH_INT((*poin));
2656                                         poin+= 4;
2657                                 }
2658                                 break;
2659                         }
2660
2661                         cp+= 2;
2662
2663                 }
2664                 data+= elemsize;
2665         }
2666 }
2667
2668 static void direct_link_key(FileData *fd, Key *key)
2669 {
2670         KeyBlock *kb;
2671
2672         link_list(fd, &(key->block));
2673
2674         key->adt= newdataadr(fd, key->adt);
2675         direct_link_animdata(fd, key->adt);
2676         
2677         key->refkey= newdataadr(fd, key->refkey);
2678
2679         kb= key->block.first;
2680         while(kb) {
2681
2682                 kb->data= newdataadr(fd, kb->data);
2683                 
2684                 if(fd->flags & FD_FLAGS_SWITCH_ENDIAN)
2685                         switch_endian_keyblock(key, kb);
2686
2687                 kb= kb->next;
2688         }
2689 }
2690
2691 /* ************ READ mball ***************** */
2692
2693 static void lib_link_mball(FileData *fd, Main *main)
2694 {
2695         MetaBall *mb;
2696         int a;
2697
2698         mb= main->mball.first;
2699         while(mb) {
2700                 if(mb->id.flag & LIB_NEEDLINK) {
2701                         if (mb->adt) lib_link_animdata(fd, &mb->id, mb->adt);
2702                         
2703                         for(a=0; a<mb->totcol; a++) mb->mat[a]= newlibadr_us(fd, mb->id.lib, mb->mat[a]);
2704
2705                         mb->ipo= newlibadr_us(fd, mb->id.lib, mb->ipo); // XXX depreceated - old animation system
2706
2707                         mb->id.flag -= LIB_NEEDLINK;
2708                 }
2709                 mb= mb->id.next;
2710         }
2711 }
2712
2713 static void direct_link_mball(FileData *fd, MetaBall *mb)
2714 {
2715         mb->adt= newdataadr(fd, mb->adt);
2716         direct_link_animdata(fd, mb->adt);
2717         
2718         mb->mat= newdataadr(fd, mb->mat);
2719         test_pointer_array(fd, (void **)&mb->mat);
2720
2721         link_list(fd, &(mb->elems));
2722
2723         mb->disp.first= mb->disp.last= NULL;
2724         mb->editelems= NULL;
2725         mb->bb= NULL;
2726 /*      mb->edit_elems.first= mb->edit_elems.last= NULL;*/
2727         mb->lastelem= NULL;
2728 }
2729
2730 /* ************ READ WORLD ***************** */
2731
2732 static void lib_link_world(FileData *fd, Main *main)
2733 {
2734         World *wrld;
2735         MTex *mtex;
2736         int a;
2737
2738         wrld= main->world.first;
2739         while(wrld) {
2740                 if(wrld->id.flag & LIB_NEEDLINK) {
2741                         if (wrld->adt) lib_link_animdata(fd, &wrld->id, wrld->adt);
2742                         
2743                         wrld->ipo= newlibadr_us(fd, wrld->id.lib, wrld->ipo); // XXX depreceated - old animation system
2744                         
2745                         for(a=0; a<MAX_MTEX; a++) {
2746                                 mtex= wrld->mtex[a];
2747                                 if(mtex) {
2748                                         mtex->tex= newlibadr_us(fd, wrld->id.lib, mtex->tex);
2749                                         mtex->object= newlibadr(fd, wrld->id.lib, mtex->object);
2750                                 }
2751                         }
2752
2753                         if(wrld->nodetree)
2754                                 lib_link_ntree(fd, &wrld->id, wrld->nodetree);
2755                         
2756                         wrld->id.flag -= LIB_NEEDLINK;
2757                 }
2758                 wrld= wrld->id.next;
2759         }
2760 }
2761
2762 static void direct_link_world(FileData *fd, World *wrld)
2763 {
2764         int a;
2765
2766         wrld->adt= newdataadr(fd, wrld->adt);
2767         direct_link_animdata(fd, wrld->adt);
2768
2769         for(a=0; a<MAX_MTEX; a++) {
2770                 wrld->mtex[a]= newdataadr(fd, wrld->mtex[a]);
2771         }
2772
2773         wrld->nodetree= newdataadr(fd, wrld->nodetree);
2774         if(wrld->nodetree)
2775                 direct_link_nodetree(fd, wrld->nodetree);
2776
2777         wrld->preview = direct_link_preview_image(fd, wrld->preview);
2778 }
2779
2780
2781 /* ************ READ VFONT ***************** */
2782
2783 static void lib_link_vfont(FileData *UNUSED(fd), Main *main)
2784 {
2785         VFont *vf;
2786
2787         vf= main->vfont.first;
2788         while(vf) {
2789                 if(vf->id.flag & LIB_NEEDLINK) {
2790                         vf->id.flag -= LIB_NEEDLINK;
2791                 }
2792                 vf= vf->id.next;
2793         }
2794 }
2795
2796 static void direct_link_vfont(FileData *fd, VFont *vf)
2797 {
2798         vf->data= NULL;
2799         vf->packedfile= direct_link_packedfile(fd, vf->packedfile);
2800 }
2801
2802 /* ************ READ TEXT ****************** */
2803
2804 static void lib_link_text(FileData *UNUSED(fd), Main *main)
2805 {
2806         Text *text;
2807
2808         text= main->text.first;
2809         while(text) {
2810                 if(text->id.flag & LIB_NEEDLINK) {
2811                         text->id.flag -= LIB_NEEDLINK;
2812                 }
2813                 text= text->id.next;
2814         }
2815 }
2816
2817 static void direct_link_text(FileData *fd, Text *text)
2818 {
2819         TextLine *ln;
2820
2821         text->name= newdataadr(fd, text->name);
2822
2823         text->undo_pos= -1;
2824         text->undo_len= TXT_INIT_UNDO;
2825         text->undo_buf= MEM_mallocN(text->undo_len, "undo buf");
2826
2827         text->compiled= NULL;
2828
2829 /*
2830         if(text->flags & TXT_ISEXT) {
2831                 reopen_text(text);
2832         } else {
2833 */
2834
2835         link_list(fd, &text->lines);
2836         link_list(fd, &text->markers);
2837
2838         text->curl= newdataadr(fd, text->curl);
2839         text->sell= newdataadr(fd, text->sell);
2840
2841         ln= text->lines.first;
2842         while(ln) {
2843                 ln->line= newdataadr(fd, ln->line);
2844                 ln->format= NULL;
2845                 
2846                 if (ln->len != (int) strlen(ln->line)) {
2847                         printf("Error loading text, line lengths differ\n");
2848                         ln->len = strlen(ln->line);
2849                 }
2850
2851                 ln= ln->next;
2852         }
2853
2854         text->flags = (text->flags) & ~TXT_ISEXT;
2855
2856         text->id.us= 1;
2857 }
2858
2859 /* ************ READ IMAGE ***************** */
2860
2861 static void lib_link_image(FileData *fd, Main *main)
2862 {
2863         Image *ima;
2864
2865         ima= main->image.first;
2866         while (ima) {
2867                 if(ima->id.flag & LIB_NEEDLINK) {
2868                         if (ima->id.properties) IDP_LibLinkProperty(ima->id.properties, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
2869
2870                         ima->id.flag -= LIB_NEEDLINK;
2871                 }
2872                 ima= ima->id.next;
2873         }
2874 }
2875
2876 static void link_ibuf_list(FileData *fd, ListBase *lb)
2877 {
2878         Link *ln, *prev;
2879         
2880         if(lb->first==NULL) return;
2881         
2882         lb->first= newimaadr(fd, lb->first);
2883         ln= lb->first;
2884         prev= NULL;
2885         while(ln) {
2886                 ln->next= newimaadr(fd, ln->next);
2887                 ln->prev= prev;
2888                 prev= ln;
2889                 ln= ln->next;
2890         }
2891         lb->last= prev;
2892 }
2893
2894 static void direct_link_image(FileData *fd, Image *ima)
2895 {
2896         /* for undo system, pointers could be restored */
2897         if(fd->imamap)
2898                 link_ibuf_list(fd, &ima->ibufs);
2899         else
2900                 ima->ibufs.first= ima->ibufs.last= NULL;
2901         
2902         /* if not restored, we keep the binded opengl index */
2903         if(ima->ibufs.first==NULL) {
2904                 ima->bindcode= 0;
2905                 ima->gputexture= NULL;
2906         }
2907         
2908         ima->anim= NULL;
2909         ima->rr= NULL;
2910         ima->repbind= NULL;
2911         
2912         /* undo system, try to restore render buffers */
2913         if(fd->imamap) {
2914                 int a;
2915                 
2916                 for(a=0; a<IMA_MAX_RENDER_SLOT; a++)
2917                         ima->renders[a]= newimaadr(fd, ima->renders[a]);
2918         }
2919         else {
2920                 memset(ima->renders, 0, sizeof(ima->renders));
2921                 ima->last_render_slot= ima->render_slot;
2922         }
2923         
2924         ima->packedfile = direct_link_packedfile(fd, ima->packedfile);
2925         ima->preview = direct_link_preview_image(fd, ima->preview);
2926         ima->ok= 1;
2927 }
2928
2929
2930 /* ************ READ CURVE ***************** */
2931
2932 static void lib_link_curve(FileData *fd, Main *main)
2933 {
2934         Curve *cu;
2935         int a;
2936
2937         cu= main->curve.first;
2938         while(cu) {
2939                 if(cu->id.flag & LIB_NEEDLINK) {
2940                         if(cu->adt) lib_link_animdata(fd, &cu->id, cu->adt);
2941
2942                         for(a=0; a<cu->totcol; a++) cu->mat[a]= newlibadr_us(fd, cu->id.lib, cu->mat[a]);
2943
2944                         cu->bevobj= newlibadr(fd, cu->id.lib, cu->bevobj);
2945                         cu->taperobj= newlibadr(fd, cu->id.lib, cu->taperobj);
2946                         cu->textoncurve= newlibadr(fd, cu->id.lib, cu->textoncurve);
2947                         cu->vfont= newlibadr_us(fd, cu->id.lib, cu->vfont);
2948                         cu->vfontb= newlibadr_us(fd, cu->id.lib, cu->vfontb);                   
2949                         cu->vfonti= newlibadr_us(fd, cu->id.lib, cu->vfonti);
2950                         cu->vfontbi= newlibadr_us(fd, cu->id.lib, cu->vfontbi);
2951
2952                         cu->ipo= newlibadr_us(fd, cu->id.lib, cu->ipo); // XXX depreceated - old animation system
2953                         cu->key= newlibadr_us(fd, cu->id.lib, cu->key);
2954
2955                         cu->id.flag -= LIB_NEEDLINK;
2956                 }
2957                 cu= cu->id.next;
2958         }
2959 }
2960
2961
2962 static void switch_endian_knots(Nurb *nu)
2963 {
2964         int len;
2965
2966         if(nu->knotsu) {
2967                 len= KNOTSU(nu);
2968                 while(len--) {
2969                         SWITCH_INT(nu->knotsu[len]);
2970                 }
2971         }
2972         if(nu->knotsv) {
2973                 len= KNOTSV(nu);
2974                 while(len--) {
2975                         SWITCH_INT(nu->knotsv[len]);
2976                 }
2977         }
2978 }
2979
2980 static void direct_link_curve(FileData *fd, Curve *cu)
2981 {
2982         Nurb *nu;
2983         TextBox *tb;
2984         
2985         cu->adt= newdataadr(fd, cu->adt);
2986         direct_link_animdata(fd, cu->adt);
2987         
2988         cu->mat= newdataadr(fd, cu->mat);
2989         test_pointer_array(fd, (void **)&cu->mat);
2990         cu->str= newdataadr(fd, cu->str);
2991         cu->strinfo= newdataadr(fd, cu->strinfo);       
2992         cu->tb= newdataadr(fd, cu->tb);
2993
2994         if(cu->vfont == NULL) link_list(fd, &(cu->nurb));
2995         else {
2996                 cu->nurb.first=cu->nurb.last= NULL;
2997
2998                 tb= MEM_callocN(MAXTEXTBOX*sizeof(TextBox), "TextBoxread");
2999                 if (cu->tb) {
3000                         memcpy(tb, cu->tb, cu->totbox*sizeof(TextBox));
3001                         MEM_freeN(cu->tb);
3002                         cu->tb= tb;                     
3003                 } else {
3004                         cu->totbox = 1;
3005                         cu->actbox = 1;
3006                         cu->tb = tb;
3007                         cu->tb[0].w = cu->linewidth;
3008                 }               
3009                 if (cu->wordspace == 0.0f) cu->wordspace = 1.0f;
3010         }
3011
3012         cu->bev.first=cu->bev.last= NULL;
3013         cu->disp.first=cu->disp.last= NULL;
3014         cu->editnurb= NULL;
3015         cu->lastsel= NULL;
3016         cu->path= NULL;
3017         cu->editfont= NULL;
3018         
3019         nu= cu->nurb.first;
3020         while(nu) {
3021                 nu->bezt= newdataadr(fd, nu->bezt);
3022                 nu->bp= newdataadr(fd, nu->bp);
3023                 nu->knotsu= newdataadr(fd, nu->knotsu);
3024                 nu->knotsv= newdataadr(fd, nu->knotsv);
3025                 if (cu->vfont == NULL) nu->charidx= nu->mat_nr;
3026
3027                 if(fd->flags & FD_FLAGS_SWITCH_ENDIAN) {
3028                         switch_endian_knots(nu);
3029                 }
3030
3031                 nu= nu->next;
3032         }
3033         cu->bb= NULL;
3034 }
3035
3036 /* ************ READ TEX ***************** */
3037
3038 static void lib_link_texture(FileData *fd, Main *main)
3039 {
3040         Tex *tex;
3041
3042         tex= main->tex.first;
3043         while(tex) {
3044                 if(tex->id.flag & LIB_NEEDLINK) {
3045                         if(tex->adt) lib_link_animdata(fd, &tex->id, tex->adt);
3046
3047                         tex->ima= newlibadr_us(fd, tex->id.lib, tex->ima);
3048                         tex->ipo= newlibadr_us(fd, tex->id.lib, tex->ipo);
3049                         if(tex->env) tex->env->object= newlibadr(fd, tex->id.lib, tex->env->object);
3050                         if(tex->pd)
3051                                 tex->pd->object= newlibadr(fd, tex->id.lib, tex->pd->object);
3052                         if(tex->vd) tex->vd->object= newlibadr(fd, tex->id.lib, tex->vd->object);
3053
3054                         if(tex->nodetree)
3055                                 lib_link_ntree(fd, &tex->id, tex->nodetree);
3056                         
3057                         tex->id.flag -= LIB_NEEDLINK;
3058                 }
3059                 tex= tex->id.next;
3060         }
3061 }
3062
3063 static void direct_link_texture(FileData *fd, Tex *tex)
3064 {
3065         tex->adt= newdataadr(fd, tex->adt);
3066         direct_link_animdata(fd, tex->adt);
3067         
3068         tex->plugin= newdataadr(fd, tex->plugin);
3069         if(tex->plugin) {
3070                 tex->plugin->handle= NULL;
3071                 open_plugin_tex(tex->plugin);
3072                 /* initialize data for this instance, if an initialization
3073                  * function exists.
3074                  */
3075                 if (tex->plugin->instance_init)
3076                         tex->plugin->instance_init((void *) tex->plugin->data);
3077         }
3078         tex->coba= newdataadr(fd, tex->coba);
3079         tex->env= newdataadr(fd, tex->env);
3080         if(tex->env) {
3081                 tex->env->ima= NULL;
3082                 memset(tex->env->cube, 0, 6*sizeof(void *));
3083                 tex->env->ok= 0;
3084         }
3085         tex->pd= newdataadr(fd, tex->pd);
3086         if(tex->pd) {
3087                 tex->pd->point_tree = NULL;
3088                 tex->pd->coba= newdataadr(fd, tex->pd->coba);
3089                 tex->pd->falloff_curve= newdataadr(fd, tex->pd->falloff_curve);
3090                 if(tex->pd->falloff_curve) {
3091                         direct_link_curvemapping(fd, tex->pd->falloff_curve);
3092                 }
3093         }
3094         
3095         tex->vd= newdataadr(fd, tex->vd);
3096         if(tex->vd) {
3097                 tex->vd->dataset = NULL;
3098                 tex->vd->ok = 0;
3099         } else {
3100                 if(tex->type == TEX_VOXELDATA)
3101                         tex->vd= MEM_callocN(sizeof(VoxelData), "direct_link_texture VoxelData");
3102         }
3103         
3104         tex->nodetree= newdataadr(fd, tex->nodetree);
3105         if(tex->nodetree)
3106                 direct_link_nodetree(fd, tex->nodetree);
3107         
3108         tex->preview = direct_link_preview_image(fd, tex->preview);
3109
3110         tex->iuser.ok= 1;
3111 }
3112
3113
3114
3115 /* ************ READ MATERIAL ***************** */
3116
3117 static void lib_link_material(FileData *fd, Main *main)
3118 {
3119         Material *ma;
3120         MTex *mtex;
3121         int a;
3122
3123         ma= main->mat.first;
3124         while(ma) {
3125                 if(ma->id.flag & LIB_NEEDLINK) {
3126                         if(ma->adt) lib_link_animdata(fd, &ma->id, ma->adt);
3127
3128                         /*Link ID Properties -- and copy this comment EXACTLY for easy finding
3129                         of library blocks that implement this.*/
3130                         if (ma->id.properties) IDP_LibLinkProperty(ma->id.properties, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
3131
3132                         ma->ipo= newlibadr_us(fd, ma->id.lib, ma->ipo);
3133                         ma->group= newlibadr_us(fd, ma->id.lib, ma->group);
3134                         
3135                         for(a=0; a<MAX_MTEX; a++) {
3136                                 mtex= ma->mtex[a];
3137                                 if(mtex) {
3138                                         mtex->tex= newlibadr_us(fd, ma->id.lib, mtex->tex);
3139                                         mtex->object= newlibadr(fd, ma->id.lib, mtex->object);
3140                                 }
3141                         }
3142                         
3143                         if(ma->nodetree)
3144                                 lib_link_ntree(fd, &ma->id, ma->nodetree);
3145                         
3146                         ma->id.flag -= LIB_NEEDLINK;
3147                 }
3148                 ma= ma->id.next;
3149         }
3150 }
3151
3152 static void direct_link_material(FileData *fd, Material *ma)
3153 {
3154         int a;
3155
3156         ma->adt= newdataadr(fd, ma->adt);
3157         direct_link_animdata(fd, ma->adt);
3158         
3159         for(a=0; a<MAX_MTEX; a++) {
3160                 ma->mtex[a]= newdataadr(fd, ma->mtex[a]);
3161         }
3162
3163         ma->ramp_col= newdataadr(fd, ma->ramp_col);
3164         ma->ramp_spec= newdataadr(fd, ma->ramp_spec);
3165         
3166         ma->nodetree= newdataadr(fd, ma->nodetree);
3167         if(ma->nodetree)
3168                 direct_link_nodetree(fd, ma->nodetree);
3169
3170         ma->preview = direct_link_preview_image(fd, ma->preview);
3171         ma->gpumaterial.first = ma->gpumaterial.last = NULL;
3172 }
3173
3174 /* ************ READ PARTICLE SETTINGS ***************** */
3175 /* update this also to writefile.c */
3176 static const char *ptcache_data_struct[] = {
3177         "", // BPHYS_DATA_INDEX
3178         "", // BPHYS_DATA_LOCATION
3179         "", // BPHYS_DATA_VELOCITY
3180         "", // BPHYS_DATA_ROTATION
3181         "", // BPHYS_DATA_AVELOCITY / BPHYS_DATA_XCONST */
3182         "", // BPHYS_DATA_SIZE:
3183         "", // BPHYS_DATA_TIMES:        
3184         "BoidData" // case BPHYS_DATA_BOIDS:
3185 };
3186 static void direct_link_pointcache(FileData *fd, PointCache *cache)
3187 {
3188         if((cache->flag & PTCACHE_DISK_CACHE)==0) {
3189                 PTCacheMem *pm;
3190                 PTCacheExtra *extra;
3191                 int i;
3192
3193                 link_list(fd, &cache->mem_cache);
3194
3195                 pm = cache->mem_cache.first;
3196
3197                 for(; pm; pm=pm->next) {
3198                         for(i=0; i<BPHYS_TOT_DATA; i++) {
3199                                 pm->data[i] = newdataadr(fd, pm->data[i]);
3200                                 
3201                                 /* the cache saves non-struct data without DNA */
3202                                 if(pm->data[i] && ptcache_data_struct[i][0]=='\0' && (fd->flags & FD_FLAGS_SWITCH_ENDIAN)) {
3203                                         int j, tot= (BKE_ptcache_data_size (i) * pm->totpoint)/4; /* data_size returns bytes */
3204                                         int *poin= pm->data[i];
3205                                         
3206                                         for(j= 0; j<tot; j++)
3207                                                 SWITCH_INT(poin[j]);
3208                                 }
3209                         }
3210                         
3211                         link_list(fd, &pm->extradata);
3212
3213                         for(extra=pm->extradata.first; extra; extra=extra->next)
3214                                 extra->data = newdataadr(fd, extra->data);
3215                 }
3216         }
3217         else
3218                 cache->mem_cache.first = cache->mem_cache.last = NULL;
3219
3220         cache->flag &= ~PTCACHE_SIMULATION_VALID;
3221         cache->simframe= 0;
3222         cache->edit= NULL;
3223         cache->free_edit= NULL;
3224         cache->cached_frames= NULL;
3225 }
3226
3227 static void direct_link_pointcache_list(FileData *fd, ListBase *ptcaches, PointCache **ocache, int force_disk)
3228 {
3229         if(ptcaches->first) {
3230                 PointCache *cache= NULL;
3231                 link_list(fd, ptcaches);
3232                 for(cache=ptcaches->first; cache; cache=cache->next) {
3233                         direct_link_pointcache(fd, cache);
3234                         if(force_disk) {
3235                                 cache->flag |= PTCACHE_DISK_CACHE;
3236                                 cache->step = 1;
3237                         }
3238                 }
3239
3240                 *ocache = newdataadr(fd, *ocache);
3241         }
3242         else if(*ocache) {
3243                 /* old "single" caches need to be linked too */
3244                 *ocache = newdataadr(fd, *ocache);
3245                 direct_link_pointcache(fd, *ocache);
3246                 if(force_disk) {
3247                         (*ocache)->flag |= PTCACHE_DISK_CACHE;
3248                         (*ocache)->step = 1;
3249                 }
3250
3251                 ptcaches->first = ptcaches->last = *ocache;
3252         }
3253 }
3254
3255 static void lib_link_partdeflect(FileData *fd, ID *id, PartDeflect *pd)
3256 {
3257         if(pd && pd->tex)
3258                 pd->tex=newlibadr_us(fd, id->lib, pd->tex);
3259 }
3260
3261 static void lib_link_particlesettings(FileData *fd, Main *main)
3262 {
3263         ParticleSettings *part;
3264         ParticleDupliWeight *dw;
3265         MTex *mtex;
3266         int a;
3267
3268         part= main->particle.first;
3269         while(part) {
3270                 if(part->id.flag & LIB_NEEDLINK) {
3271                         if (part->adt) lib_link_animdata(fd, &part->id, part->adt);
3272                         part->ipo= newlibadr_us(fd, part->id.lib, part->ipo); // XXX depreceated - old animation system
3273                         
3274                         part->dup_ob = newlibadr(fd, part->id.lib, part->dup_ob);
3275                         part->dup_group = newlibadr(fd, part->id.lib, part->dup_group);
3276                         part->eff_group = newlibadr(fd, part->id.lib, part->eff_group);
3277                         part->bb_ob = newlibadr(fd, part->id.lib, part->bb_ob);
3278
3279                         lib_link_partdeflect(fd, &part->id, part->pd);
3280                         lib_link_partdeflect(fd, &part->id, part->pd2);
3281
3282                         if(part->effector_weights)
3283                                 part->effector_weights->group = newlibadr(fd, part->id.lib, part->effector_weights->group);
3284
3285                         if(part->dupliweights.first && part->dup_group) {
3286                                 int index_ok = 0;
3287                                 /* check for old files without indices (all indexes 0) */
3288                                 dw = part->dupliweights.first;