-
Notifications
You must be signed in to change notification settings - Fork 3
/
main.c
1255 lines (1065 loc) · 35.7 KB
/
main.c
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
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// Save Game Extractor - a utility that transmits Sega Saturn save game files over audio. Based on minimodem.
/*
** Jo Sega Saturn Engine
** Copyright (c) 2012-2017, Johannes Fetz ([email protected])
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** * Neither the name of the Johannes Fetz nor the
** names of its contributors may be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
** DISCLAIMED. IN NO EVENT SHALL Johannes Fetz BE LIABLE FOR ANY
** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <jo/jo.h>
#include "main.h"
#include "util.h"
#include "encode.h"
#include "md5/md5.h"
#include "saturn-minimodem.h"
GAME g_Game = {0};
SAVES g_Saves[MAX_SAVES] = {0};
void jo_main(void)
{
int result = 0;
jo_core_init(JO_COLOR_Black);
// increase the default heap size. LWRAM is not being used
jo_add_memory_zone((unsigned char *)LWRAM, LWRAM_HEAP_SIZE);
// allocate our save file buffer
// the buffer consists of the transmission header + bup header + save data
g_Game.transmissionData = jo_malloc(TRANSMISSION_HEADER_SIZE + BUP_HEADER_SIZE + MAX_SAVE_SIZE);
if(g_Game.transmissionData == NULL)
{
jo_core_error("Failed to allocated save file data buffer!!");
return;
}
g_Game.saveFileData = g_Game.transmissionData + TRANSMISSION_HEADER_SIZE + BUP_HEADER_SIZE;
// init Saturn minimodem
result = SaturnMinimodem_init();
if(result != 0)
{
jo_core_error("Failed to initialize minimodem!!");
return;
}
// init Reed Solomon encoder
g_reedSolomon = correct_reed_solomon_create(correct_rs_primitive_polynomial_ccsds,
RS_FIRST_CONSECUTIVE_ROOT,
RS_ROOT_GAP,
RS_NUM_ROOTS);
if(g_reedSolomon == NULL)
{
jo_core_error("Failed to init Reed Solomon");
return;
}
// ABC + start handler
jo_core_set_restart_game_callback(abcStartHandler);
// callbacks
jo_core_add_callback(main_draw);
jo_core_add_callback(main_input);
jo_core_add_callback(listSaves_draw);
jo_core_add_callback(listSaves_input);
jo_core_add_callback(playSaves_draw);
jo_core_add_callback(playSaves_input);
jo_core_add_callback(dumpBios_draw);
jo_core_add_callback(dumpBios_input);
jo_core_add_callback(test_draw);
jo_core_add_callback(test_input);
jo_core_add_callback(collect_draw);
jo_core_add_callback(collect_input);
jo_core_add_callback(credits_draw);
jo_core_add_callback(credits_input);
// debug output
//jo_core_add_callback(debugOutput_draw);
// initial state
transitionToState(STATE_MAIN);
jo_core_run();
}
// useful debug output
void debugOutput_draw()
{
jo_printf(2, 0, "Memory Usage: %d Frag: %d" , jo_memory_usage_percent(), jo_memory_fragmentation());
jo_printf(2, 1, "Save: %d CO: %d" , g_Game.numSaves, g_Game.cursorOffset);
/*
if(jo_memory_fragmentation() > 100)
{
jo_core_error("High fragmentation!! %d", jo_memory_fragmentation());
jo_reduce_memory_fragmentation();
jo_core_error("High fragmentation!! %d", jo_memory_fragmentation());
}
*/
}
// restarts the program if controller one presses ABC+Start
// this definitely leaks memory but whatever...
// maybe I should just call jo_main()?
void abcStartHandler(void)
{
g_Game.input.pressedStartAC = true;
g_Game.input.pressedB = true;
transitionToState(STATE_MAIN);
return;
}
// helper for transitioning between program states
// adds/removes callbacks as needed
// resets globals as needed
void transitionToState(int newState)
{
clearScreen();
g_Game.previousState = g_Game.state;
switch(g_Game.state)
{
case STATE_UNINITIALIZED:
case STATE_MAIN:
case STATE_LIST_SAVES:
case STATE_PLAY_SAVES:
case STATE_DUMP_BIOS:
case STATE_TEST:
case STATE_COLLECT:
case STATE_CREDITS:
break;
default:
jo_core_error("%d is an invalid current state!!", g_Game.state);
return;
}
switch(newState)
{
case STATE_MAIN:
g_Game.cursorPosX = CURSOR_X;
g_Game.cursorPosY = OPTIONS_Y;
g_Game.cursorOffset = 0;
g_Game.numStateOptions = MAIN_NUM_OPTIONS;
break;
case STATE_LIST_SAVES:
g_Game.cursorPosX = CURSOR_X;
g_Game.cursorPosY = OPTIONS_Y + 1;
g_Game.cursorOffset = 0;
g_Game.numStateOptions = 0; // 0 options until we list the number of saves
g_Game.numSaves = 0; // number of saves counted
g_Game.listedSaves = false;
break;
case STATE_DUMP_BIOS:
g_Game.cursorPosX = CURSOR_X;
g_Game.cursorPosY = OPTIONS_Y + 1;
g_Game.cursorOffset = 0;
g_Game.numStateOptions = BIOS_NUM_OPTIONS;
break;
case STATE_PLAY_SAVES:
g_Game.md5Calculated = false;
g_Game.isTransmissionRunning = false;
if(g_Game.encodedTransmissionData != NULL)
{
jo_free(g_Game.encodedTransmissionData);
g_Game.encodedTransmissionData = NULL;
}
g_Game.encodedTransmissionSize = 0;
break;
case STATE_TEST:
g_Game.isTransmissionRunning = false;
break;
case STATE_COLLECT:
break;
case STATE_CREDITS:
break;
default:
jo_core_error("%d is an invalid state!!", newState);
return;
}
g_Game.state = newState;
return;
}
// draws the main option screen
// Number of options are hardcoded
void main_draw(void)
{
unsigned int y = 0;
if(g_Game.state != STATE_MAIN)
{
return;
}
// heading
jo_printf(HEADING_X, HEADING_Y + y++, "Save Game Extractor Ver %s", VERSION);
jo_printf(HEADING_X, HEADING_Y + y++, HEADING_UNDERSCORE);
y = 0;
// options
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Internal Memory");
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Cartridge Memory");
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "External Device (Floppy)");
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Dump Bios");
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Test Audio Transmission");
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Save Games Collect Project");
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Credits");
// cursor
jo_printf(g_Game.cursorPosX, g_Game.cursorPosY + g_Game.cursorOffset, ">>");
return;
}
// checks for up/down movement for the cursor
// erases the old one and draws a new one
// savesPage is set to true if the cursor is for the list saves page
void moveCursor(bool savesPage)
{
int cursorOffset = g_Game.cursorOffset;
int maxCursorOffset = g_Game.numStateOptions;
// do nothing if there are no options
// this can happen if we select a backup device with no saves for example
if(g_Game.numStateOptions == 0)
{
return;
}
if (jo_is_pad1_key_pressed(JO_KEY_UP))
{
if(g_Game.input.pressedUp == false)
{
cursorOffset--;
}
g_Game.input.pressedUp = true;
}
else
{
g_Game.input.pressedUp = false;
}
if (jo_is_pad1_key_pressed(JO_KEY_DOWN))
{
if(g_Game.input.pressedDown == false)
{
cursorOffset++;
}
g_Game.input.pressedDown = true;
}
else
{
g_Game.input.pressedDown = false;
}
// if we moved the cursor, erase the old
if(cursorOffset != g_Game.cursorOffset)
{
if(savesPage == true)
{
jo_printf(g_Game.cursorPosX, g_Game.cursorPosY + (g_Game.cursorOffset % MAX_SAVES_PER_PAGE), " ");
}
else
{
jo_printf(g_Game.cursorPosX, g_Game.cursorPosY + g_Game.cursorOffset, " ");
}
}
// validate the number of lives
if(cursorOffset < 0)
{
cursorOffset = maxCursorOffset - 1;
}
if(cursorOffset >= maxCursorOffset)
{
cursorOffset = 0;
}
g_Game.cursorOffset = cursorOffset;
}
// handles input on the main screen
void main_input(void)
{
if(g_Game.state != STATE_MAIN)
{
return;
}
// did the player hit start
if(jo_is_pad1_key_pressed(JO_KEY_START) ||
jo_is_pad1_key_pressed(JO_KEY_A) ||
jo_is_pad1_key_pressed(JO_KEY_C))
{
if(g_Game.input.pressedStartAC == false)
{
g_Game.input.pressedStartAC = true;
switch(g_Game.cursorOffset)
{
case MAIN_OPTION_INTERNAL:
{
g_Game.backupDevice = JoInternalMemoryBackup;
transitionToState(STATE_LIST_SAVES);
return;
}
case MAIN_OPTION_CARTRIDGE:
{
g_Game.backupDevice = JoCartridgeMemoryBackup;
transitionToState(STATE_LIST_SAVES);
return;
}
case MAIN_OPTION_EXTERNAL:
{
g_Game.backupDevice = JoExternalDeviceBackup;
transitionToState(STATE_LIST_SAVES);
return;
}
case MAIN_OPTION_BIOS:
{
transitionToState(STATE_DUMP_BIOS);
return;
}
case MAIN_OPTION_TEST:
{
transitionToState(STATE_TEST);
return;
}
case MAIN_OPTION_COLLECT:
{
transitionToState(STATE_COLLECT);
return;
}
case MAIN_OPTION_CREDITS:
{
transitionToState(STATE_CREDITS);
return;
}
default:
{
jo_core_error("Invalid main option!!");
return;
}
}
}
}
else
{
g_Game.input.pressedStartAC = false;
}
// update the cursor
moveCursor(false);
return;
}
// queries the saves on the backup device and fills out the fileSaves array
int readSaveFiles(jo_backup_device backupDevice, PSAVES fileSaves, unsigned int numSaves)
{
jo_list saveFilenames = {0};
bool result = false;
int count = 0;
jo_list_init(&saveFilenames);
result = jo_backup_read_device(backupDevice, &saveFilenames);
if(result == false)
{
jo_list_free_and_clear(&saveFilenames);
return -1;
}
for(unsigned int i = 0; i < (unsigned int)saveFilenames.count && i < numSaves; i++)
{
char comment[MAX_SAVE_COMMENT] = {0};
unsigned char language = 0;
unsigned int date = 0;
unsigned int numBytes = 0;
unsigned int numBlocks = 0;
char* filename = jo_list_at(&saveFilenames, i)->data.ch_arr;
if(filename == NULL)
{
jo_core_error("readSaveFiles list is corrupt!!");
return -1;
}
// query the save metadata
result = jo_backup_get_file_info(backupDevice, filename, comment, &language, &date, &numBytes, &numBlocks);
if(result == false)
{
jo_core_error("Failed to read file size!!");
return -1;
}
strncpy((char*)fileSaves[i].filename, filename, MAX_SAVE_FILENAME);
strncpy((char*)fileSaves[i].comment, comment, MAX_SAVE_COMMENT);
fileSaves[i].language = language;
fileSaves[i].date = date;
fileSaves[i].datasize = numBytes;
fileSaves[i].blocksize = numBlocks;
count++;
}
jo_list_free_and_clear(&saveFilenames);
return count;
}
// draws the list saves screen
void listSaves_draw(void)
{
char* backupDeviceType = NULL;
if(g_Game.state != STATE_LIST_SAVES)
{
return;
}
switch(g_Game.backupDevice)
{
case JoInternalMemoryBackup:
backupDeviceType = "Internal Memory";
break;
case JoCartridgeMemoryBackup:
backupDeviceType = "Cartridge Memory";
break;
case JoExternalDeviceBackup:
backupDeviceType = "External Device";
break;
default:
jo_core_error("Invalid backup device specified!! %d\n", g_Game.backupDevice);
return;
}
jo_printf(HEADING_X, HEADING_Y, "%s", backupDeviceType);
jo_printf(HEADING_X, HEADING_Y + 1, HEADING_UNDERSCORE);
if(g_Game.listedSaves == false)
{
bool result;
int count;
jo_memset(g_Saves, 0, sizeof(g_Saves));
g_Game.listedSaves = true;
result = jo_backup_mount(g_Game.backupDevice);
if(result == false)
{
jo_core_error("Failed to open internal %s!!", backupDeviceType);
transitionToState(STATE_MAIN);
return;
}
// read the saves meta data
count = readSaveFiles(g_Game.backupDevice, g_Saves, COUNTOF(g_Saves));
if(count > 0)
{
// update the count of saves
g_Game.numSaves = count;
}
else
{
g_Game.numSaves = 0;
}
}
if(g_Game.numSaves > 0)
{
int i = 0;
int j = 0;
// header
jo_printf(OPTIONS_X, OPTIONS_Y, "%-11s %-10s %6s", "Filename", "Comment", "Bytes");
// zero out the save print fields otherwise we will have stale data on the screen
// when we go to other pages
for(i = 0; i < MAX_SAVES_PER_PAGE; i++)
{
jo_printf(OPTIONS_X, OPTIONS_Y + i + 1, " ");
}
// print up to MAX_SAVES_PER_PAGE saves on the screen
for(i = (g_Game.cursorOffset / MAX_SAVES_PER_PAGE) * MAX_SAVES_PER_PAGE, j = 0; i < g_Game.numSaves && j < MAX_SAVES_PER_PAGE; i++, j++)
{
jo_printf(OPTIONS_X, OPTIONS_Y + (i % MAX_SAVES_PER_PAGE) + 1, "%-11s %-10s %6d", g_Saves[i].filename, g_Saves[i].comment, g_Saves[i].datasize);
}
g_Game.numStateOptions = g_Game.numSaves;
}
else
{
jo_printf(OPTIONS_X, OPTIONS_Y, "Found 0 saves on the device");
}
if(g_Game.numStateOptions > 0)
{
// copy the save data
memcpy(g_Game.saveFilename, g_Saves[g_Game.cursorOffset].filename, MAX_SAVE_FILENAME);
strncpy(g_Game.saveComment, g_Saves[g_Game.cursorOffset].comment, MAX_SAVE_COMMENT);
g_Game.saveLanguage = g_Saves[g_Game.cursorOffset].language;
g_Game.saveDate = g_Saves[g_Game.cursorOffset].date;
g_Game.saveFileSize = g_Saves[g_Game.cursorOffset].datasize;
jo_printf(g_Game.cursorPosX, g_Game.cursorPosY + g_Game.cursorOffset % MAX_SAVES_PER_PAGE, ">>");
}
return;
}
// handles input on the list saves screen
// B returns to the main menu
void listSaves_input(void)
{
if(g_Game.state != STATE_LIST_SAVES)
{
return;
}
// did the player hit start
if(jo_is_pad1_key_pressed(JO_KEY_START) ||
jo_is_pad1_key_pressed(JO_KEY_A) ||
jo_is_pad1_key_pressed(JO_KEY_C))
{
if(g_Game.input.pressedStartAC == false)
{
int result = 0;
g_Game.input.pressedStartAC = true;
if(g_Game.numStateOptions == 0)
{
// if user hit A, C or start and there were no saves listed, return them back a screen
transitionToState(STATE_MAIN);
return;
}
result = copySaveFile();
if(result != 0)
{
// something went wrong
// copySaveFile calls jo_core_error() so we don't have to do anything
transitionToState(STATE_MAIN);
}
transitionToState(STATE_PLAY_SAVES);
return;
}
}
else
{
g_Game.input.pressedStartAC = false;
}
if(jo_is_pad1_key_pressed(JO_KEY_B))
{
if(g_Game.input.pressedB == false)
{
g_Game.input.pressedB = true;
transitionToState(STATE_MAIN);
return;
}
}
else
{
g_Game.input.pressedB = false;
}
// update the cursor
moveCursor(true);
return;
}
// draws the play saves screen
void playSaves_draw(void)
{
int result = 0;
int y = 0;
unsigned int bytesTransferred = 0;
unsigned int totalSize = 0;
jo_backup_date jo_date = {0};
if(g_Game.state != STATE_PLAY_SAVES)
{
return;
}
jo_printf(HEADING_X, HEADING_Y, "Transmitting Data Over Audio");
jo_printf(HEADING_X, HEADING_Y + 1, HEADING_UNDERSCORE);
// only compute the MD5 hash once
if(g_Game.md5Calculated == false)
{
unsigned int unencodedSize = 0;
unsigned int uncompressedSize = 0;
unsigned char* compressedBuffer = NULL;
g_Game.compressedSize = 0;
//
// print messages to the user so that can get an estimate of the time for longer operations
//
result = calculateMD5Hash(g_Game.saveFileData, g_Game.saveFileSize, g_Game.md5Hash);
if(result != 0)
{
// something went wrong
transitionToState(STATE_MAIN);
return;
}
// transmission header
result = initializeTransmissionHeader(g_Game.md5Hash, sizeof(g_Game.md5Hash), g_Game.saveFilename, g_Game.saveFileSize);
if(result != 0)
{
// something went wrong
transitionToState(STATE_MAIN);
return;
}
// bup header
initializeBUPHeader(g_Game.saveFilename, g_Game.saveComment, g_Game.saveLanguage, g_Game.saveDate, g_Game.saveFileSize);
if(result != 0)
{
// something went wrong
transitionToState(STATE_MAIN);
return;
}
//
// Compress the save
//
// estimate the compressed output size
uncompressedSize = TRANSMISSION_HEADER_SIZE + BUP_HEADER_SIZE + g_Game.saveFileSize;
g_Game.compressedSize = compressOutSize(uncompressedSize);
compressedBuffer = jo_malloc(g_Game.compressedSize);
if(compressedBuffer == NULL)
{
jo_core_error("Failed to allocate compression buffer!!");
transitionToState(STATE_MAIN);
return;
}
result = compressBuffer(g_Game.transmissionData, uncompressedSize, compressedBuffer, &g_Game.compressedSize);
if(result != 0)
{
// something went wrong
transitionToState(STATE_MAIN);
return;
}
//
// Reed Solomon encode the compressed buffer
//
unencodedSize = g_Game.compressedSize;
g_Game.encodedTransmissionSize = reedSolomonOutSize(unencodedSize);
g_Game.encodedTransmissionData = jo_malloc(g_Game.encodedTransmissionSize);
if(g_Game.encodedTransmissionData == NULL)
{
jo_core_error("Failed to allocate Reed Solomon buffer!!");
transitionToState(STATE_MAIN);
return;
}
jo_memset(g_Game.encodedTransmissionData, 0, g_Game.encodedTransmissionSize);
result = reedSolomonEncode(compressedBuffer, unencodedSize, g_Game.encodedTransmissionData);
if(result != 0)
{
jo_core_error("Failed to Reed Solomon encode data!!");
jo_free(g_Game.encodedTransmissionData);
jo_free(compressedBuffer);
g_Game.encodedTransmissionData = NULL;
g_Game.encodedTransmissionSize = 0;
transitionToState(STATE_MAIN);
return;
}
// no longer need the compressed buffer
jo_memset(compressedBuffer, 0, g_Game.compressedSize);
jo_free(compressedBuffer);
// escape the buffer if necessary
result = escapeBuffer(&g_Game.encodedTransmissionData, &g_Game.encodedTransmissionSize);
if(result != 0)
{
jo_core_error("Failed to escape the data!!");
jo_free(g_Game.encodedTransmissionData);
g_Game.encodedTransmissionData = NULL;
g_Game.encodedTransmissionSize = 0;
transitionToState(STATE_MAIN);
}
g_Game.md5Calculated = true;
}
// convert between internal date and jo_date
bup_getdate(g_Game.saveDate, &jo_date);
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Filename: %s ", g_Game.saveFilename);
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Comment: %s ", g_Game.saveComment);
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Date: %d/%d/%d %d:%d ", jo_date.month, jo_date.day, jo_date.year + 1980, jo_date.time, jo_date.min);
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "MD5: %02x%02x%02x%02x%02x%02x%02x%02x", g_Game.md5Hash[0], g_Game.md5Hash[1], g_Game.md5Hash[2], g_Game.md5Hash[3], g_Game.md5Hash[4], g_Game.md5Hash[5], g_Game.md5Hash[6], g_Game.md5Hash[7]);
jo_printf(OPTIONS_X, OPTIONS_Y + y++, " %02x%02x%02x%02x%02x%02x%02x%02x", g_Game.md5Hash[8], g_Game.md5Hash[9], g_Game.md5Hash[10], g_Game.md5Hash[11], g_Game.md5Hash[12], g_Game.md5Hash[13], g_Game.md5Hash[14], g_Game.md5Hash[15]);
y++;
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Size: %d ", g_Game.saveFileSize);
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Compressed Size: %d ", g_Game.compressedSize);
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Total Size: %d ", g_Game.encodedTransmissionSize);
result = SaturnMinimodem_transferStatus(&bytesTransferred, &totalSize);
if(result == 0)
{
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Bytes Sent: %d ", bytesTransferred);
}
else
{ // it's ok to fail, that just means our transfer hasn't startedd
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Bytes Sent: N/A ");
}
int estimatedTimeLeft = ((g_Game.encodedTransmissionSize - bytesTransferred) * 8)/ESTIMATED_TRANSFER_SPEED;
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Est Time: %d ", estimatedTimeLeft);
y++;
if(g_Game.isTransmissionRunning == false)
{
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Press C to play the data ");
}
else
{
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Press B to stop playing the data");
result = SaturnMinimodem_transfer();
if(result < 0)
{
jo_core_error("something went wrong!!\n");
g_Game.isTransmissionRunning = false;
}
else if(result == TRANSFER_COMPLETE)
{
g_Game.isTransmissionRunning = false;
}
}
return;
}
// handles input on the play saves screen
// B returns to the main menu
void playSaves_input(void)
{
if(g_Game.state != STATE_PLAY_SAVES)
{
return;
}
// did the player hit start
if(jo_is_pad1_key_pressed(JO_KEY_START) ||
jo_is_pad1_key_pressed(JO_KEY_A) ||
jo_is_pad1_key_pressed(JO_KEY_C))
{
if(g_Game.input.pressedStartAC == false)
{
g_Game.input.pressedStartAC = true;
// the test is not currently running, start the test
if(g_Game.isTransmissionRunning == false)
{
if(g_Game.encodedTransmissionData == NULL || g_Game.encodedTransmissionSize == 0)
{
jo_core_error("Transmission data isn't initialized!!");
transitionToState(STATE_MAIN);
return;
}
SaturnMinimodem_initTransfer(g_Game.encodedTransmissionData, g_Game.encodedTransmissionSize);
g_Game.isTransmissionRunning = true;
}
return;
}
}
else
{
g_Game.input.pressedStartAC = false;
}
if(jo_is_pad1_key_pressed(JO_KEY_B))
{
if(g_Game.input.pressedB == false)
{
g_Game.input.pressedB = true;
transitionToState(g_Game.previousState);
return;
}
}
else
{
g_Game.input.pressedB = false;
}
// update the cursor
moveCursor(false);
return;
}
const char* BIOS_FILENAMES[] = {"BIOS.BIN.1", "BIOS.BIN.2", "BIOS.BIN.3", "BIOS.BIN.4"};
// draws the dump bios screen
void dumpBios_draw(void)
{
if(g_Game.state != STATE_DUMP_BIOS)
{
return;
}
jo_printf(HEADING_X, HEADING_Y, "Dump Bios");
jo_printf(HEADING_X, HEADING_Y + 1, HEADING_UNDERSCORE);
jo_printf(OPTIONS_X, OPTIONS_Y, "%-11s %10s", "Filename", "Bytes");
for(int i = 0; i < 4; i++)
{
jo_printf(OPTIONS_X, OPTIONS_Y + i + 1, "%-11s %10d", BIOS_FILENAMES[i], BIOS_SIZE/4);
}
if(g_Game.md5BiosCalculated == false)
{
int result = 0;
result = calculateMD5Hash(BIOS_START_ADDR, BIOS_SIZE, g_Game.md5BiosHash);
if(result != 0)
{
// something went wrong
transitionToState(STATE_MAIN);
return;
}
g_Game.md5BiosCalculated = true;
}
jo_printf(OPTIONS_X, OPTIONS_Y + 6, "BIOS MD5: %02x%02x%02x%02x%02x%02x%02x%02x", g_Game.md5BiosHash[0], g_Game.md5BiosHash[1], g_Game.md5BiosHash[2], g_Game.md5BiosHash[3], g_Game.md5BiosHash[4], g_Game.md5BiosHash[5], g_Game.md5BiosHash[6], g_Game.md5BiosHash[7]);
jo_printf(OPTIONS_X, OPTIONS_Y + 7, " %02x%02x%02x%02x%02x%02x%02x%02x", g_Game.md5BiosHash[8], g_Game.md5BiosHash[9], g_Game.md5BiosHash[10], g_Game.md5BiosHash[11], g_Game.md5BiosHash[12], g_Game.md5BiosHash[13], g_Game.md5BiosHash[14], g_Game.md5BiosHash[15]);
// bugbug use strncpy here
strncpy(g_Game.saveFilename, BIOS_FILENAMES[g_Game.cursorOffset], sizeof(g_Game.saveFilename) - 1);
g_Game.saveFileSize = BIOS_SIZE/4;
// cursor
jo_printf(g_Game.cursorPosX, g_Game.cursorPosY + g_Game.cursorOffset, ">>");
return;
}
// handles input on the dump bios screen
// B returns to the main menu
// Start, A, or C starts transmitting the BIOS
void dumpBios_input(void)
{
int result = 0;
if(g_Game.state != STATE_DUMP_BIOS)
{
return;
}
// did the player hit start
if(jo_is_pad1_key_pressed(JO_KEY_START) ||
jo_is_pad1_key_pressed(JO_KEY_A) ||
jo_is_pad1_key_pressed(JO_KEY_C))
{
if(g_Game.input.pressedStartAC == false)
{
g_Game.input.pressedStartAC = true;
result = copyBIOS(g_Game.cursorOffset);
if(result != 0)
{
// something went wrong
// copyBIOS calls jo_core_error() so we don't have to do anything
transitionToState(STATE_MAIN);
}
transitionToState(STATE_PLAY_SAVES);
}
}
else
{
g_Game.input.pressedStartAC = false;
}
if(jo_is_pad1_key_pressed(JO_KEY_B))
{
if(g_Game.input.pressedB == false)
{
g_Game.input.pressedB = true;
transitionToState(STATE_MAIN);
return;
}
}
else
{
g_Game.input.pressedB = false;
}
// update the cursor
moveCursor(false);
return;
}
// draws the test screen
void test_draw(void)
{
int result;
unsigned int y = 0;
if(g_Game.state != STATE_TEST)
{
return;
}
// heading
jo_printf(HEADING_X, HEADING_Y + y++, "Test Audio Transmission");
jo_printf(HEADING_X, HEADING_Y + y++, HEADING_UNDERSCORE);
y = 0;
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "The test sends the string:");
y++;
jo_printf(OPTIONS_X, OPTIONS_Y + y++, " This ");
jo_printf(OPTIONS_X, OPTIONS_Y + y++, " is ");
jo_printf(OPTIONS_X, OPTIONS_Y + y++, " COOL");
y++;
if(g_Game.isTransmissionRunning == false)
{
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Press C to play the test ");
}
else
{
jo_printf(OPTIONS_X, OPTIONS_Y + y++, "Press B to stop playing the test");
result = SaturnMinimodem_transfer();
if(result < 0)
{
jo_core_error("something went wrong!!\n");
g_Game.isTransmissionRunning = false;
}
else if(result == TRANSFER_COMPLETE)
{
g_Game.isTransmissionRunning = false;
}
}