summaryrefslogtreecommitdiff
path: root/packages/powermanga/powermanga-0.79/linuxroutines.cpp
blob: 39394eb0268e4b8fd2e8120383ad1527399366b3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
//*****************************************************************************
// copyright (c) 1998-2003 TLK Games all rights reserved
//-----------------------------------------------------------------------------
// file         : "linuxroutines.cpp"
// created      : 1999-08-19
// updates      : 2004-08-01 
//------------------------------------------------------------------------------
// functions    :  int              mem_initialise(unsigned int _iNombreZones)
//                 char*            reserveMemoire(unsigned int _iTailleMemoire)
//                 void             libereMemoire(char* _pMemoire)
//                 void             mem_libereTous()
//                 int              load_pcx(char*, char*) ;
//                 sDescriptionGfx* load_pcx(char*) ;
//                 unsigned int     littleWord(char* _pMem) ;
//                 short            litMot16bits(short* _pMem) ;
//                 int              litMot32bits(int* _pMem) ;
//                 int              chaine_cmp(char* _pChaine1, char* _pChaine2, unsigned int _iTaille) ;
//                 char*            chargeFichier(char* _pNomFichier)
//                 char*            chargeFichier(char* _pNomFichier, unsigned int* pTaille)
//                 int              chargeFichier(char* _pNomFichier, char* _pMemoire)
//                 void             fps_init()
//                 void             fps_affiche() 
//                 void             afficheErreur(char* _pErreur1, char* _pErreur2)
//                 int              synchro_processusPause(int _iTemps)
//                 int              synchro_CalculDifference()
//                 int              synchro_CalculDifference2()
//-----------------------------------------------------------------------------
// This program is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free Software
// Foundation; either version 2 of the License, or (at your option) any later
// version.
// 
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
// details.
//
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the Free Software Foundation, Inc., 59 Temple
// Place - Suite 330, Boston, MA  02111-1307, USA.
//
//*****************************************************************************

#include "powermanga.hpp"
#include <errno.h>

#ifndef SDL_TLK
#include <sys/types.h>
#include <sys/stat.h>
#endif

//..............................................................................
extern unsigned int     iVerbeux;                              //1=affiche les arguments / 1=verbose mode

//gestion de la memoire .........................................................
typedef struct
{ char *pMemoire;                                              //pointeur sur la zone memoire / pointer to memory zone
  int   iTailleMemoire;                                         //taille de la zone en octets / size of memory zone in bytes
}
sListeMemoire;
char                   *pZoneListeMemoire;
sListeMemoire          *pZoneListeBase;
sListeMemoire          *pZoneListeLibre;
unsigned int            iTailleListe;                          //taille de la liste memoire / size of memory table             
unsigned int            iNombreZonesMaximum;                   //nombre de zones memoires maxi / number maximum of memory zone
unsigned int            iNombreZones;                          //nombre de zone actuelle       / number of memroy zone
unsigned int            iOctetsTotal;                          //taille prise en octets        / total memory size allocated           
unsigned int            iNombreZonesMax;                       //nombre maximum de zones reserves

//..............................................................................
unsigned int            iCompteurBoucle;
#ifdef SDL_TLK 
Uint32                  time_begin;
Uint32                  temps_actuel;
Uint32                  temps_sauve;
Uint32                  temps_actuel2;
Uint32                  temps_sauve2;
#else
static struct timeval   time_begin;
static struct timeval   temps_actuel;
static struct timeval   temps_sauve;
static struct timeval   temps_actuel2;
static struct timeval   temps_sauve2;
#endif

//..............................................................................
short                   litMot16bitsBig(short *_pMem);
unsigned short          litMot16bits(unsigned short *_pMem);
extern const char       nomprefix[];
extern unsigned int     iFrame3; 
//------------------------------------------------------------------------------
// initialise la liste memoire / initialise memory table
// input =>  _iNombreZones : nombre de zones memoire possibles au maximum / number maximum of memory zone
// ouput <= 0=erreur / 0=error
//------------------------------------------------------------------------------
int mem_initialise(unsigned int _iNombreZones)
{
  unsigned int _iIndex;
  iNombreZones = 0;                                            // nombre de zones reservees a zero
  pZoneListeMemoire = 0;
  iNombreZonesMaximum = _iNombreZones;                         // nombre maximum de zones pouvant etre reservees 
  iNombreZonesMax = 0;
  iTailleListe = iNombreZonesMaximum * sizeof(sListeMemoire);
  iOctetsTotal = iTailleListe;
  pZoneListeMemoire = (char *)malloc(iTailleListe);
  if(!pZoneListeMemoire)
  { afficheErreur("malloc() failed", "linuxroutines/mem_initialise()");
    return 0;
  }
  pZoneListeBase = (sListeMemoire *) pZoneListeMemoire;
  pZoneListeLibre = pZoneListeBase;
  sListeMemoire          *_pMem = pZoneListeBase;

  for(_iIndex = 0; _iIndex < iNombreZonesMaximum; _iIndex++, _pMem++)   //clean memory table
  { _pMem->pMemoire = 0x0;
    _pMem->iTailleMemoire = 0x0;
  }
  return 1;
}

//------------------------------------------------------------------------------
// reserve une zone memoire / allocate memory
// input  => _iTailleMemoire : taille memoire en octets souhaitee / size of bytes
// output <= _pMem           : adresse memoire (0=erreur) / pointer to memory
//------------------------------------------------------------------------------
char *reserveMemoire(unsigned int _iTailleMemoire)
{
  char                   *_pMem = 0x0;
  char                   *_pMemoire = 0x0;
  char                    _cZero = 0;
  unsigned int            _iIndex;
  if(iNombreZones >= iNombreZonesMaximum)
  { printf ("linuxroutines.cpp/reserveMemoire(unsigned int) : table overflow ; size request %i bytes ; total allocate : % i in %i zones\n", _iTailleMemoire, iOctetsTotal, iNombreZones);
    return 0;
  }
  _pMem = (char *)malloc(_iTailleMemoire);
  if(!_pMem)
  { printf ("linuxroutines.cpp/reserveMemoire(unsigned int) : malloc(int) return 0 ; size request %i bytes ; total allocate : % i in %i zones\n", _iTailleMemoire, iOctetsTotal, iNombreZones);
    return 0;
  }
  iOctetsTotal += _iTailleMemoire;
  pZoneListeLibre->pMemoire = _pMem;                           //pointeur memoire      
  pZoneListeLibre->iTailleMemoire = _iTailleMemoire;           //taille en octets      
  pZoneListeLibre += 1;
  iNombreZones++;
  if(iNombreZones > iNombreZonesMax)
      iNombreZonesMax = iNombreZones; 
  _pMemoire = _pMem;
  for(_iIndex = 0; _iIndex < _iTailleMemoire; _iIndex++)
    *(_pMemoire++) = _cZero;                                   //efface memoire        
  return (_pMem);
}

//------------------------------------------------------------------------------
// liberation d'une zone memoire / free memory
// input => _pMemoire : adresse de la zone a liberer / pointer to memory
//------------------------------------------------------------------------------
void libereMemoire(char *_pMemoire)
{
  sListeMemoire          *_pListeMem;
  sListeMemoire          *_pListeMemSource;
  unsigned int            _iCompteur;
  if(_pMemoire)
  { _pListeMem = pZoneListeBase;
    for(_iCompteur = 0; _iCompteur < iNombreZones; _iCompteur++, _pListeMem++)
    { if(_pListeMem->pMemoire == _pMemoire)                    //on a trouve l'adresse dans la table ?
      { free(_pMemoire);                                       //oui, libere la memoire                                
        _pListeMemSource = _pListeMem + 1;
        iOctetsTotal -= _pListeMem->iTailleMemoire;
        iNombreZones--;
        pZoneListeLibre--;
        while (_iCompteur < iNombreZones)
        { _pListeMem->pMemoire = _pListeMemSource->pMemoire;
          _pListeMem->iTailleMemoire = _pListeMemSource->iTailleMemoire;
          _iCompteur++;
          _pListeMem++;
          _pListeMemSource++;
        }
        _pListeMem->pMemoire = 0x0;
        _pListeMem->iTailleMemoire = 0x0;
        _pMemoire = 0;
        break;
      }
    }
    if(_pMemoire > 0)
    { fprintf(stderr, "libereMemoire() : can't release the address %x\n", (int)_pMemoire);
    }
  }
  else
  { fprintf(stderr, "libereMemoire() : try to release a null address!\n");  
  }
}

//------------------------------------------------------------------------------
// retourne la taille d'une adresse memoire reservee / get memory zone's size
// input => _pMem : pointeur sur une zone memoire / pointer to memory
//------------------------------------------------------------------------------
int mem_retourneTaille(char *_pMem)
{
  unsigned int            _iCompteur;
  sListeMemoire          *_pListeMem = pZoneListeBase;
  if(_pMem)
  { for(_iCompteur = 0; _iCompteur < iNombreZones; _iCompteur++, _pListeMem++)
    { if(_pListeMem->pMemoire == _pMem)
        return _pListeMem->iTailleMemoire;
    }
  }
  return 0;
}

//------------------------------------------------------------------------------
// libere toutes les zones memoires / free all memory
//------------------------------------------------------------------------------
void mem_libereTous()
{
  unsigned int _iCompteur;
  char *_pMemoire;
  sListeMemoire *_pListeMem = pZoneListeBase;
#ifdef _VERBEUX_
  if(iVerbeux > 0)
    fprintf(stdout, "> linuxroutines.cpp/mem_libereTous(): maximum of memory which were allocated during the game : %i\n", iNombreZonesMax);
#endif
  if(iNombreZones >0)
  { 
#ifdef _VERBEUX_
    if(iVerbeux > 0)
      fprintf(stdout, "> linuxroutines.cpp/mem_libereTous() : %i zones were not released.\n", iNombreZones);
#endif
    for(_iCompteur = 0; _iCompteur < iNombreZones; _iCompteur++, _pListeMem++)
    { _pMemoire = _pListeMem->pMemoire;
      if(_pMemoire)
      { /* fprintf(stderr, "mem_libereTous: adresseMem =%x ; taille_mem=%ld\n", 
          (int)_pListeMem->pMemoire, _pListeMem->iTailleMemoire); */
        free(_pMemoire); //libere la memoire                             
        _pListeMem->pMemoire = 0;
        _pListeMem->iTailleMemoire = 0;
      }
    }
    if(pZoneListeMemoire)
    { free(pZoneListeMemoire);
      pZoneListeMemoire = 0x0;
    }
    iNombreZones = 0;
  }
}

//------------------------------------------------------------------------------
// decompress pcx file 
// input  =>  _pFichier     : filename
// output <= _pStructureGfx : pointer to the "sDescriptionGfx" structure / 0=error 
//------------------------------------------------------------------------------
sDescriptionGfx *load_pcx(char *_pNomFichier)
{
  unsigned int            iLongeur;
  unsigned int            ptr = 128;
  unsigned char           nbr_bytes;
  unsigned char           val;
  unsigned int            i1, i, total;
  unsigned char          *_pFichier, *_pAdresseMem;
  sDescriptionGfx        *_pDescripGfx = 0x0;
  _pFichier = (unsigned char *)chargeFichier(_pNomFichier, &iLongeur);  //load file in memory
  if(!_pFichier) return 0;
  unsigned short         *_p16 = (unsigned short *)_pFichier;
  unsigned int            _iLarge = (litMot16bits(_p16 + 4) - litMot16bits(_p16 + 2)) + 1;      //image width
  unsigned int            _iHaut = (litMot16bits(_p16 + 5) - litMot16bits(_p16 + 3)) + 1;       //image height
  unsigned int            _iProfondeur = _pFichier[3];         //bits per pixel

  _pDescripGfx = (sDescriptionGfx *) reserveMemoire(sizeof(sDescriptionGfx));   //allocate structure memory
  if(!_pDescripGfx)
  { afficheErreur("_pDescripGfx out of memory", "linuxroutines.cpp/load_pcx()");
    return 0;
  }
  _pDescripGfx->iLargeur = _iLarge;
  _pDescripGfx->iHauteur = _iHaut;
  _pDescripGfx->iProfond = _iProfondeur;
  _pDescripGfx->iTaille = _iLarge * _iHaut * (_iProfondeur >> 3);
  _pDescripGfx->pAdresse = reserveMemoire(_pDescripGfx->iTaille);       //allocate image memory
  if(!_pDescripGfx->pAdresse)
  { libereMemoire((char *)_pDescripGfx);
    printf("linuxroutines.cpp/load_pcx() : height=%i / width=%i \n", _iLarge, _iHaut);
    afficheErreur("_pDescripGfx->iTaille : out of memory\n", "linuxroutines.cpp/reserveMemoire()");
    return 0;
  }
  //decompress rle
  _pAdresseMem = (unsigned char *)_pDescripGfx->pAdresse;
  total = 0;
  i = iLongeur - 768;
  while (ptr < i)
  { if((_pFichier[ptr] & 0xC0) == 0xC0)
    { nbr_bytes = _pFichier[ptr] & 0x3F;
      ptr++;
    }
    else
      nbr_bytes = 1;
    val = _pFichier[ptr];
    total += nbr_bytes;                  // Samuel Hocevar
    if(total >= _pDescripGfx->iTaille)
    break;
    for(i1 = 0; i1 < nbr_bytes; i1++)
    { *_pAdresseMem = val;
      _pAdresseMem++;
    }
    ptr++;
  }
  libereMemoire((char *)_pFichier);
#ifdef _VERBEUX_
  if(iVerbeux > 0)
    fprintf (
      stdout,
      "> linuxroutines.cpp/load_pcx(): \"%s\"; height=%i; width=%i; size=%i\n",
      _pNomFichier,
      _iLarge,
      _iHaut,
      _pDescripGfx->iTaille);
#endif
  return _pDescripGfx;
}

//------------------------------------------------------------------------------
// lecture d'un mot de 16 bits code en memoire en little-endian
// input  => _pMem    : pointeur sur le mot en memoire
// output <= _iValeur : valeur utilisale
//------------------------------------------------------------------------------
unsigned int littleWord(char *_pMem)
{
  unsigned short *t = (unsigned short *)_pMem;
  return *t;
}

//------------------------------------------------------------------------------
// lecture d'un long mot signe de 16 bits little-endian (compatible little-endian/big-endian)
// input  => _pMem    : pointeur sur le mot en memoire
// output <= _iValeur : valeur utilisale
//------------------------------------------------------------------------------
short litMot16bits(short *_pMem)
{
  short  _iValeur = 0;
  unsigned char  *_pMemoire = (unsigned char *)_pMem;
  _iValeur = _pMemoire[1];                                     //lit du little endian pour un powerpc
  _iValeur <<= 8;
  _iValeur += _pMemoire[0];
  return (_iValeur);
}

//------------------------------------------------------------------------------
// lecture d'un long mot signe de 16 bits little-endian (compatible little-endian/big-endian)
// input  => _pMem    : pointeur sur le mot en memoire
// output <= _iValeur : valeur utilisale
//------------------------------------------------------------------------------
unsigned short litMot16bits(unsigned short *_pMem)
{
  unsigned short          _iValeur = 0;
  unsigned char          *_pMemoire = (unsigned char *)_pMem;
  _iValeur = _pMemoire[1];                                     //lit du little endian pour un powerpc
  _iValeur <<= 8;
  _iValeur += _pMemoire[0];
  return (_iValeur);
}

//------------------------------------------------------------------------------
// lecture d'un long mot signe de 16 bits big-endian (compatible little-endian/big-endian)
// input => _pMem    : pointeur sur le mot en memoire
// output <= _iValeur : valeur utilisale
//------------------------------------------------------------------------------
short litMot16bitsBig(short *_pMem)
{
  short                   _iValeur = 0;
  unsigned char          *_pMemoire = (unsigned char *)_pMem;
  _iValeur = _pMemoire[0];                                     //lit du big endian pour un 80x86
  _iValeur <<= 8;
  _iValeur += _pMemoire[1];
  return (_iValeur);
}

//------------------------------------------------------------------------------
//lecture d'un long mot signe de 32 bits little-endian(compatible little-endian/big-endian)
// input  => _pMem    : pointeur sur le mot 32 bits en memoire
// output <= _iValeur : valeur utilisale
//------------------------------------------------------------------------------
int litMot32bits(int *_pMem)
{
  int                     _iValeur = 0;
  unsigned char          *_pMemoire = (unsigned char *)_pMem;
  _iValeur = _pMemoire[3];
  _iValeur <<= 8;
  _iValeur += _pMemoire[2];
  _iValeur <<= 8;
  _iValeur = _pMemoire[1];
  _iValeur <<= 8;
  _iValeur += _pMemoire[0];
  return (_iValeur);
}

//------------------------------------------------------------------------------
// convertit un long mot de 32 bits en memoire little-endian => big-endian
//------------------------------------------------------------------------------
void convert32bits_2bigendian (unsigned char* memory)
{ unsigned char b0, b1, b2, b3;
  b0 = memory[1];
  b1 = memory[0];
  b2 = memory[3];
  b3 = memory[2];
  memory[0] = b2;
  memory[1] = b3;
  memory[2] = b0;
  memory[3] = b1;
}

//------------------------------------------------------------------------------
//comparaison de deux chaines de caracteres
// input  => _pChaine1 : pointeur sur la premiere chaine
//        => _pChaine1 : pointeur sur la deuxieme chaine
//        => _iTaille  : longeurs en octets de chaines
// output <= 0les chaines ont au moins une difference / 1=les chaines sont identiques
//------------------------------------------------------------------------------
int chaine_cmp(char *_pChaine1, char *_pChaine2, unsigned int _iTaille)
{
  unsigned int            _iLongeur = _iTaille;
  char                   *_pMem1 = _pChaine1;
  char                   *_pMem2 = _pChaine2;
  unsigned int            _iIndex;
  char                    _cOctet1, _cOctet2;
  for(_iIndex = 0; _iIndex < _iLongeur; _iIndex++)
  { _cOctet1 = _pMem1[_iIndex];
    _cOctet2 = _pMem2[_iIndex];
    if(_cOctet2 != _cOctet1)
      return (0);
  }
  return (1);
}

//------------------------------------------------------------------------------
// locate a file under one of the data directories (thanx to Andre Majorel :-)
// input  =>  name : name of file relative to data directory
// output <=  0    : could not locate file (not found, or not enough
//                   memory, or the name given was absolute)
// other           : pointer to a malloc'd buffer containing the name
//                   under which the file was found. free()-ing the
//                   buffer is the responsibility of the caller.
//------------------------------------------------------------------------------
static const char      *data_directories[]=
{ ".",                                                         // Normally unused, except when running from the source directory...
  "/opt/QtPalmtop/share/games/powermanga/",
  0                                                            // Special value meaning "$(PREFIX)/share/games/powermanga/"
                                                               // Also marks end of list
};
static char pathstring[256];

char *locate_data_file(const char *const name)
{
  
  for(int i = 0; i < 256; i++)
	pathstring[i] = 0;
	
  if(name == 0) return 0;
  if(*name == '/') return strdup(name);                        // Guillaume Cottenceau (2001-03-15) replace "return 0;" by "strdup(name);"
                                                               // En effet, nous sommes dans le cas ou le programme recherche dans /usr/share/games/powermanga
  for(const char **p = data_directories;; p++)
  { char *pathname;
    if(*p == 0)
    { const char *subdir = "/share/games/powermanga/";
      pathname = &pathstring[0];
      /*pathname=(char *)malloc(strlen(nomprefix) + strlen(subdir) + strlen(name) + 1);
      if(pathname == 0)
      { fflush(stdout);
        fprintf(stderr, "powermanga: not enough memory\n");
        return 0;
      }*/
      strcpy(pathname, nomprefix);
      strcat(pathname, subdir);
      strcat(pathname, name);
    }
    else if(**p == '~')                                        // Not used anymore
    { static const char       bogus = '\0';
      static const char      *home_dir = &bogus;
      if(home_dir == &bogus) home_dir = getenv("HOME");
      if(home_dir == 0) continue;                             // $HOME not set. Skip this directory.
      pathname = &pathstring[0];
      
      /*pathname = (char *)malloc(strlen(home_dir) + 1 + strlen(*p + 1) + 1 + strlen(name) + 1);
      if(pathname == 0)
      { fflush(stdout);
        fprintf(stderr, "powermanga: not enough memory\n");
        return 0;
      }*/
      strcpy(pathname, home_dir);
      strcat(pathname, *p + 1);
      strcat(pathname, "/");
      strcat(pathname, name);
    }
    else
    {
      pathname = &pathstring[0];
      /*pathname = (char *)malloc(strlen(*p) + 1 + strlen(name) + 1);
      if(pathname == 0)
      { fflush(stdout);
        fprintf(stderr, "powermanga: not enough memory\n");
        return 0;
      }*/
      strcpy(pathname, *p);
      strcat(pathname, "/");
      strcat(pathname, name);
    }
    //puts(pathname);  // DEBUG
#ifdef WIN32
    struct _stat s;
    if(_stat(pathname, &s) == 0 && !_S_ISDIR(s.st_mode))
      return pathname;
#else
    struct stat s;
    if(stat(pathname, &s) == 0 && !S_ISDIR(s.st_mode))
      return pathname;
#endif
    //free(pathname);
    if(*p == 0) break;
  }
  return 0;                                                    // Not found.
}

//------------------------------------------------------------------------------
// load a file in memory / charge un fichier en memoire
// input =>  _pNomFichier  : nom du fichier
//           _pAdresse     : adresse de chargemebt
//           _iTaille      : taille a lire
// output <= 1             : tout c'est bien passe
//           0             : erreur
//------------------------------------------------------------------------------
char *chargeFichier(char *_pNomFichier)
{
  unsigned int            _pTaille;
  return chargeFichier(_pNomFichier, &_pTaille);
}

//------------------------------------------------------------------------------
// load a file in memory 
// input => _pNomFichier : filename
// sortie <= _pMemoire   : ptr/integer 
//------------------------------------------------------------------------------
char *chargeFichier(char *_pNomFichier, unsigned int *pTaille)
{
  int _iHandle;
  char *_pMemoire;
  struct stat sDescriptionFichier;
  char *pathname = locate_data_file(_pNomFichier);
  if(pathname == 0)
  { printf("linuxroutines/chargeFichier() : can't locate file : %s\n\n", _pNomFichier);
    return 0;
  }
#ifdef WIN32
  _iHandle = open(pathname, O_RDONLY | O_BINARY, 0); 
#else
  _iHandle = open(pathname, O_RDONLY, 0); 
#endif
  if(_iHandle == -1)
  { printf("linuxroutines/chargeFichier() : can't open file : %s (%s)\n\n", pathname, strerror(errno));
    //free(pathname);
    return 0;
  }
  if(fstat(_iHandle, &sDescriptionFichier))
  { printf("linuxroutines/chargeFichier() : can't stat file : %s (%s)\n\n", pathname, strerror(errno));
    close(_iHandle);
    //free(pathname);
    return 0;
  }
  (*pTaille) = sDescriptionFichier.st_size;                    //sauve taille
  _pMemoire = reserveMemoire(sDescriptionFichier.st_size);     //reserve la place en memoire pour lire le fichier
  if(!_pMemoire)
  { printf("linuxroutines/chargeFichier() %s : out of memory\n\n", pathname);
    close(_iHandle);
    //free(pathname);
    return 0;
  }
  if(read(_iHandle, _pMemoire, sDescriptionFichier.st_size) != sDescriptionFichier.st_size)
  { libereMemoire(_pMemoire);
    printf("linuxroutines/chargeFichier() can't read file %s (%s)\n\n", pathname, strerror(errno));
    close(_iHandle);
    //free(pathname);
    return 0;
  }
  close(_iHandle);
#ifdef _VERBEUX_
  if(iVerbeux > 1)
    printf("linuxroutines/chargeFichier : file %s was loaded in memory\n", pathname);
#endif
  //free(pathname);
  return _pMemoire;
}

//------------------------------------------------------------------------------
// load a file in memory / charge un fichier en memoire
// input   => _pNomFichier : filename / nom du fichier
//         => _pMemoire    : pointer to memory / pointeur sur la memoire   
// output <= 1             : 0 error/erreur
//------------------------------------------------------------------------------
int chargeFichier(char *_pNomFichier, char *_pMemoire)
{
  int                     _iHandle;
  struct stat             sDescriptionFichier;
  char                   *pathname = locate_data_file(_pNomFichier);
  if(pathname == 0)
  { printf("linuxroutines/chargeFichier() : can't locate file : %s\n\n", _pNomFichier);
    return 0;
  }
#ifdef WIN32
  _iHandle = open(pathname, O_RDONLY | O_BINARY, 0); 
#else
  _iHandle = open(pathname, O_RDONLY, 0); 
#endif
  if(_iHandle == -1)
  { printf ("linuxroutines.cpp/chargeFichier() : can't open file : %s (%s)\n\n", pathname, strerror(errno));
    //free(pathname);
    return 0;
  }
  if(fstat(_iHandle, &sDescriptionFichier))
  { printf ("linuxroutines.cpp/chargeFichier() : can't stat file : %s (%s)\n\n", pathname, strerror(errno));
    close(_iHandle);
    //free(pathname);
    return 0;
  }
  if(read(_iHandle, _pMemoire, sDescriptionFichier.st_size) != sDescriptionFichier.st_size)
  { printf("linuxroutines.cpp/chargeFichier() can't read file %s (%s)\n\n", pathname, strerror(errno));
    close(_iHandle);
    //free(pathname);
    return 0;
  }
  close(_iHandle);
#ifdef _VERBEUX_
  if(iVerbeux > 1) printf("linuxroutines/chargeFichier : file %s was loaded in memory\n", pathname);
#endif
  //free(pathname);
  return 1;
}

//------------------------------------------------------------------------------
// initialise le compteur de boucle et l'heure de depart du programme
//------------------------------------------------------------------------------
void fps_init()
{
#ifdef SDL_TLK 
  time_begin = SDL_GetTicks();
  temps_sauve = SDL_GetTicks();
  temps_sauve2 = SDL_GetTicks();
#else
  gettimeofday(&time_begin, NULL);
  gettimeofday(&temps_sauve, NULL);
  gettimeofday(&temps_sauve2, NULL);
#endif
  iCompteurBoucle = 0;
}

//------------------------------------------------------------------------------
// affiche information sur le systeme
//------------------------------------------------------------------------------
void fps_affiche()
{
  
#ifdef SDL_TLK
  double fps;
  unsigned long duration;
  Sint32 time_end; 
  time_end = SDL_GetTicks();
  duration = time_end - time_begin;
  fps = (1000.0 * iCompteurBoucle) / duration;
  if(iVerbeux > 0)
  { printf("> linuxroutines.cpp/number of loops : %i\n", iCompteurBoucle);
    printf("> linuxroutines.cpp/running time    : %li\n", duration);
    printf("> linuxroutines.cpp/fps_affiche()   : frames per seconde : %g \n", fps);
  }
#else  
  struct utsname          kernel;
  struct stat             statmem;
  unsigned long           duration;
  double                  fps;
  double                  mem;
  char                    os_name[32];
  char                    os_vers[32];
  char                    cpu[64];
  char                    freq[32];
  FILE                   *cpuinfo;
  char                    txt[256];
  static struct timeval   time_end;

  //calcul le temps total d'execution ............................................
  gettimeofday(&time_end, NULL);
  duration = (time_end.tv_sec - time_begin.tv_sec) * 1000 + (time_end.tv_usec - time_begin.tv_usec) / 1000;
  fps = (1000.0 * iCompteurBoucle) / duration;

  //version du systeme d'exploitation ............................................
  if(uname(&kernel) < 0)
  { strcpy(os_name, "?");
    strcpy(os_vers, "");
  }
  else
  { strncpy(os_name, kernel.sysname, 32);
    strncpy(os_vers, kernel.release, 32);
  }
  //processeur & memoire physique du systeme .....................................
  stat("/proc/kcore", &statmem);
  mem = ((float)statmem.st_size) / 1024 / 1024;
  strcpy(cpu, "Unknown");
  strcpy(freq, "Unknown");
  cpuinfo = fopen("/proc/cpuinfo", "r");
  if(cpuinfo != NULL)
  { while (fgets(txt, 255, cpuinfo))
    { if(!strncmp(txt, "model", 5))
      { int                     i = 0;
        while (txt[i] != ':') i++;
        i += 2;
        for(int j = 0; j < 64;)
        { if(txt[i++] != '\n') cpu[j++] = txt[i - 1];
        }
      }
      if(!strncmp(txt, "cpu MHz", 7))
      { int                     i = 0;
        while (txt[i] != ':') i++;
        i += 2;
        sprintf(freq, "%d", atoi(txt + i));
      }
    }
  }
  //processeur & memoire physique du systeme .....................................
  if(iVerbeux > 0)
  { printf("operating system   : %s %s\n", os_name, os_vers);
    printf("processor          : %s at %s Mhz with %.0f RAM\n", cpu, freq, mem);
    printf("number of loops    : %i\n", iCompteurBoucle);
    printf("running time       : %li\n", duration);
    printf("frames per seconde : %g \n", fps);
    //printf ( "Compilateur      : %s\n" , COMPILO );
  }
#endif
}

//------------------------------------------------------------------------------
// display error message
// input => _Message :  message 
//------------------------------------------------------------------------------
void afficheMessage(char *_Message)
{ 
  printf("%s\n", _Message);
}

//------------------------------------------------------------------------------
// display error message
// input => _Message1 :  message 1 
//       => _Message2 :  message 2 
//------------------------------------------------------------------------------
void afficheMessage(char *_Message1, char *_Message2)
{
  printf("%s %s\n", _Message1, _Message2);
}

//------------------------------------------------------------------------------
// display error message
// input => _pErreur1 : error message 
//       => _pErreur2 : title error
//------------------------------------------------------------------------------
void afficheErreur(char *_pErreur1, char *_pErreur2)
{
  printf("%s %s\n", _pErreur2, _pErreur1);
}

//------------------------------------------------------------------------------
// display error message
// input        => _pErreur1 : error message 
//              => _pErreur2 : title error
//              => _pErreur3 : error message
//------------------------------------------------------------------------------
void afficheErreur(char *_pErreur1, char *_pErreur2, char *_pErreur3)
{
  printf("%s %s %s\n", _pErreur2, _pErreur1, _pErreur3);
}

//------------------------------------------------------------------------------
// display error message
// input        => _pErreur1 : error message 
//              => _pErreur2 : title error
//              => _iErreur : error number
//------------------------------------------------------------------------------
void afficheErreur(char *_pErreur1, char *_pErreur2, int _iErreur)
{
  printf("%s %s error=%i\n", _pErreur2, _pErreur1, _iErreur);
}

//------------------------------------------------------------------------------
// sleep process
// input => i : time
//------------------------------------------------------------------------------
int synchro_processusPause(int _iTemps)
{
#ifdef SDL_TLK 
  if(_iTemps > (int)iFrame3)
    _iTemps = iFrame3;
  if(_iTemps > 0)
    SDL_Delay(_iTemps);
  return (_iTemps > 0 ? _iTemps : 0);
#else
  struct timeval temps;
  if(_iTemps > (int)iFrame3)
    _iTemps = iFrame3;
  if(_iTemps > 0)
  { temps.tv_usec = _iTemps % (unsigned long)1000000;
    temps.tv_sec = _iTemps / (unsigned long)1000000;
    //sleep for a time interval
    select(0, NULL, NULL, NULL, &temps);
  }
  return (_iTemps > 0 ? _iTemps : 0);
#endif
}

#ifdef SDL_TLK
int synchro_CalculDifference()
{
  int _iDifference;
  temps_actuel = SDL_GetTicks();
  _iDifference = temps_actuel - temps_sauve;
  temps_sauve = temps_actuel;
  return _iDifference;
}
#else
//------------------------------------------------------------------------------
// calcul la difference entre deux heure differentes
// sortie <= : _iDifference
//------------------------------------------------------------------------------
int synchro_CalculDifference()
{
  int _iDifference;
  gettimeofday(&temps_actuel, NULL);
  _iDifference = (1000000 * (temps_actuel.tv_sec - temps_sauve.tv_sec)) + (temps_actuel.tv_usec - temps_sauve.tv_usec);
  temps_sauve = temps_actuel;
  return _iDifference;
}

//------------------------------------------------------------------------------
// calcul la difference entre deux heure differentes
// sortie <= : _iDifference
//------------------------------------------------------------------------------
int synchro_CalculDifference2()
{
  int _iDifference;
  gettimeofday(&temps_actuel2, NULL);
  _iDifference = (1000000 * (temps_actuel2.tv_sec - temps_sauve2.tv_sec)) + (temps_actuel2.tv_usec - temps_sauve2.tv_usec);
  temps_sauve2 = temps_actuel2;
  return _iDifference;
}
#endif