aboutsummaryrefslogtreecommitdiff
path: root/frontend/libretro.c
blob: 940ff05aa346b2094c509dff27e09a7ea0e6a822 (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
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
/*
 * (C) notaz, 2012,2014,2015
 *
 * This work is licensed under the terms of the GNU GPLv2 or later.
 * See the COPYING file in the top-level directory.
 */

#define _GNU_SOURCE 1 // strcasestr
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#ifdef __MACH__
#include <unistd.h>
#include <sys/syscall.h>
#endif

#include "../libpcsxcore/misc.h"
#include "../libpcsxcore/psxcounters.h"
#include "../libpcsxcore/psxmem_map.h"
#include "../libpcsxcore/new_dynarec/new_dynarec.h"
#include "../libpcsxcore/cdrom.h"
#include "../libpcsxcore/cdriso.h"
#include "../libpcsxcore/cheat.h"
#include "../plugins/dfsound/out.h"
#include "../plugins/dfsound/spu_config.h"
#include "../plugins/dfinput/externals.h"
#include "cspace.h"
#include "main.h"
#include "plugin.h"
#include "plugin_lib.h"
#include "arm_features.h"
#include "revision.h"
#include "libretro.h"

static retro_video_refresh_t video_cb;
static retro_input_poll_t input_poll_cb;
static retro_input_state_t input_state_cb;
static retro_environment_t environ_cb;
static retro_audio_sample_batch_t audio_batch_cb;
static struct retro_rumble_interface rumble;

static void *vout_buf;
static int vout_width, vout_height;
static int vout_doffs_old, vout_fb_dirty;
static bool vout_can_dupe;
static bool duping_enable;

static int plugins_opened;
static int is_pal_mode;

/* memory card data */
extern char Mcd1Data[MCD_SIZE];
extern char McdDisable[2];

/* PCSX ReARMed core calls and stuff */
int in_type1, in_type2;
int in_a1[2] = { 127, 127 }, in_a2[2] = { 127, 127 };
int in_keystate;
int in_enable_vibration = 1;

/* PSX max resolution is 640x512, but with enhancement it's 1024x512 */
#define VOUT_MAX_WIDTH 1024
#define VOUT_MAX_HEIGHT 512

static void init_memcard(char *mcd_data)
{
	unsigned off = 0;
	unsigned i;

	memset(mcd_data, 0, MCD_SIZE);

	mcd_data[off++] = 'M';
	mcd_data[off++] = 'C';
	off += 0x7d;
	mcd_data[off++] = 0x0e;

	for (i = 0; i < 15; i++) {
		mcd_data[off++] = 0xa0;
		off += 0x07;
		mcd_data[off++] = 0xff;
		mcd_data[off++] = 0xff;
		off += 0x75;
		mcd_data[off++] = 0xa0;
	}

	for (i = 0; i < 20; i++) {
		mcd_data[off++] = 0xff;
		mcd_data[off++] = 0xff;
		mcd_data[off++] = 0xff;
		mcd_data[off++] = 0xff;
		off += 0x04;
		mcd_data[off++] = 0xff;
		mcd_data[off++] = 0xff;
		off += 0x76;
	}
}

static int vout_open(void)
{
	return 0;
}

static void vout_set_mode(int w, int h, int raw_w, int raw_h, int bpp)
{
	vout_width = w;
	vout_height = h;
}

#ifndef FRONTEND_SUPPORTS_RGB565
static void convert(void *buf, size_t bytes)
{
	unsigned int i, v, *p = buf;

	for (i = 0; i < bytes / 4; i++) {
		v = p[i];
		p[i] = (v & 0x001f001f) | ((v >> 1) & 0x7fe07fe0);
	}
}
#endif

static void vout_flip(const void *vram, int stride, int bgr24, int w, int h)
{
	unsigned short *dest = vout_buf;
	const unsigned short *src = vram;
	int dstride = vout_width, h1 = h;
	int doffs;

	if (vram == NULL) {
		// blanking
		memset(vout_buf, 0, dstride * h * 2);
		goto out;
	}

	doffs = (vout_height - h) * dstride;
	doffs += (dstride - w) / 2 & ~1;
	if (doffs != vout_doffs_old) {
		// clear borders
		memset(vout_buf, 0, dstride * h * 2);
		vout_doffs_old = doffs;
	}
	dest += doffs;

	if (bgr24)
	{
		// XXX: could we switch to RETRO_PIXEL_FORMAT_XRGB8888 here?
		for (; h1-- > 0; dest += dstride, src += stride)
		{
			bgr888_to_rgb565(dest, src, w * 3);
		}
	}
	else
	{
		for (; h1-- > 0; dest += dstride, src += stride)
		{
			bgr555_to_rgb565(dest, src, w * 2);
		}
	}

out:
#ifndef FRONTEND_SUPPORTS_RGB565
	convert(vout_buf, vout_width * vout_height * 2);
#endif
	vout_fb_dirty = 1;
	pl_rearmed_cbs.flip_cnt++;
}

static void vout_close(void)
{
}

static void *pl_mmap(unsigned int size)
{
	return psxMap(0, size, 0, MAP_TAG_VRAM);
}

static void pl_munmap(void *ptr, unsigned int size)
{
	psxUnmap(ptr, size, MAP_TAG_VRAM);
}

struct rearmed_cbs pl_rearmed_cbs = {
	.pl_vout_open = vout_open,
	.pl_vout_set_mode = vout_set_mode,
	.pl_vout_flip = vout_flip,
	.pl_vout_close = vout_close,
	.mmap = pl_mmap,
	.munmap = pl_munmap,
	/* from psxcounters */
	.gpu_hcnt = &hSyncCount,
	.gpu_frame_count = &frame_counter,
};

void pl_frame_limit(void)
{
	/* called once per frame, make psxCpu->Execute() above return */
	stop = 1;
}

void pl_timing_prepare(int is_pal)
{
	is_pal_mode = is_pal;
}

void plat_trigger_vibrate(int pad, int low, int high)
{
    rumble.set_rumble_state(pad, RETRO_RUMBLE_STRONG, high << 8);
    rumble.set_rumble_state(pad, RETRO_RUMBLE_WEAK, low ? 0xffff : 0x0);
}

void pl_update_gun(int *xn, int *yn, int *xres, int *yres, int *in)
{
}

/* sound calls */
static int snd_init(void)
{
	return 0;
}

static void snd_finish(void)
{
}

static int snd_busy(void)
{
	return 0;
}

static void snd_feed(void *buf, int bytes)
{
	if (audio_batch_cb != NULL)
		audio_batch_cb(buf, bytes / 4);
}

void out_register_libretro(struct out_driver *drv)
{
	drv->name = "libretro";
	drv->init = snd_init;
	drv->finish = snd_finish;
	drv->busy = snd_busy;
	drv->feed = snd_feed;
}

/* libretro */
void retro_set_environment(retro_environment_t cb)
{
   static const struct retro_variable vars[] = {
      { "pcsx_rearmed_frameskip", "Frameskip; 0|1|2|3" },
      { "pcsx_rearmed_region", "Region; Auto|NTSC|PAL" },
      { "pcsx_rearmed_pad1type", "Pad 1 Type; standard|analog" },
      { "pcsx_rearmed_pad2type", "Pad 2 Type; standard|analog" },
#ifndef DRC_DISABLE
      { "pcsx_rearmed_drc", "Dynamic recompiler; enabled|disabled" },
#endif
#ifdef __ARM_NEON__
      { "pcsx_rearmed_neon_interlace_enable", "Enable interlacing mode(s); disabled|enabled" },
      { "pcsx_rearmed_neon_enhancement_enable", "Enhanced resolution (slow); disabled|enabled" },
      { "pcsx_rearmed_neon_enhancement_no_main", "Enhanced resolution speed hack; disabled|enabled" },
#endif
      { "pcsx_rearmed_duping_enable", "Frame duping; on|off" },
      { "pcsx_rearmed_spu_reverb", "Sound: Reverb; on|off" },
      { "pcsx_rearmed_spu_interpolation", "Sound: Interpolation; simple|gaussian|cubic|off" },
      { NULL, NULL },
   };

   environ_cb = cb;

   cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void*)vars);
}

void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }

unsigned retro_api_version(void)
{
	return RETRO_API_VERSION;
}

void retro_set_controller_port_device(unsigned port, unsigned device)
{
}

void retro_get_system_info(struct retro_system_info *info)
{
	memset(info, 0, sizeof(*info));
	info->library_name = "PCSX-ReARMed";
	info->library_version = "r22";
	info->valid_extensions = "bin|cue|img|mdf|pbp|toc|cbn|m3u";
	info->need_fullpath = true;
}

void retro_get_system_av_info(struct retro_system_av_info *info)
{
	memset(info, 0, sizeof(*info));
	info->timing.fps            = is_pal_mode ? 50 : 60;
	info->timing.sample_rate    = 44100;
	info->geometry.base_width   = 320;
	info->geometry.base_height  = 240;
	info->geometry.max_width    = VOUT_MAX_WIDTH;
	info->geometry.max_height   = VOUT_MAX_HEIGHT;
	info->geometry.aspect_ratio = 4.0 / 3.0;
}

/* savestates */
size_t retro_serialize_size(void) 
{ 
	// it's currently 4380651-4397047 bytes,
	// but have some reserved for future
	return 0x440000;
}

struct save_fp {
	char *buf;
	size_t pos;
	int is_write;
};

static void *save_open(const char *name, const char *mode)
{
	struct save_fp *fp;

	if (name == NULL || mode == NULL)
		return NULL;

	fp = malloc(sizeof(*fp));
	if (fp == NULL)
		return NULL;

	fp->buf = (char *)name;
	fp->pos = 0;
	fp->is_write = (mode[0] == 'w' || mode[1] == 'w');

	return fp;
}

static int save_read(void *file, void *buf, u32 len)
{
	struct save_fp *fp = file;
	if (fp == NULL || buf == NULL)
		return -1;

	memcpy(buf, fp->buf + fp->pos, len);
	fp->pos += len;
	return len;
}

static int save_write(void *file, const void *buf, u32 len)
{
	struct save_fp *fp = file;
	if (fp == NULL || buf == NULL)
		return -1;

	memcpy(fp->buf + fp->pos, buf, len);
	fp->pos += len;
	return len;
}

static long save_seek(void *file, long offs, int whence)
{
	struct save_fp *fp = file;
	if (fp == NULL)
		return -1;

	switch (whence) {
	case SEEK_CUR:
		fp->pos += offs;
		return fp->pos;
	case SEEK_SET:
		fp->pos = offs;
		return fp->pos;
	default:
		return -1;
	}
}

static void save_close(void *file)
{
	struct save_fp *fp = file;
	size_t r_size = retro_serialize_size();
	if (fp == NULL)
		return;

	if (fp->pos > r_size)
		SysPrintf("ERROR: save buffer overflow detected\n");
	else if (fp->is_write && fp->pos < r_size)
		// make sure we don't save trash in leftover space
		memset(fp->buf + fp->pos, 0, r_size - fp->pos);
	free(fp);
}

bool retro_serialize(void *data, size_t size)
{ 
	int ret = SaveState(data);
	return ret == 0 ? true : false;
}

bool retro_unserialize(const void *data, size_t size)
{
	int ret = LoadState(data);
	return ret == 0 ? true : false;
}

/* cheats */
void retro_cheat_reset(void)
{
	ClearAllCheats();
}

void retro_cheat_set(unsigned index, bool enabled, const char *code)
{
	char buf[256];
	int ret;

	// cheat funcs are destructive, need a copy..
	strncpy(buf, code, sizeof(buf));
	buf[sizeof(buf) - 1] = 0;

	if (index < NumCheats)
		ret = EditCheat(index, "", buf);
	else
		ret = AddCheat("", buf);

	if (ret != 0)
		SysPrintf("Failed to set cheat %#u\n", index);
	else if (index < NumCheats)
		Cheats[index].Enabled = enabled;
}

/* multidisk support */
static bool disk_ejected;
static unsigned int disk_current_index;
static unsigned int disk_count;
static struct disks_state {
	char *fname;
	int internal_index; // for multidisk eboots
} disks[8];

static bool disk_set_eject_state(bool ejected)
{
	// weird PCSX API..
	SetCdOpenCaseTime(ejected ? -1 : (time(NULL) + 2));
	LidInterrupt();

	disk_ejected = ejected;
	return true;
}

static bool disk_get_eject_state(void)
{
	/* can't be controlled by emulated software */
	return disk_ejected;
}

static unsigned int disk_get_image_index(void)
{
	return disk_current_index;
}

static bool disk_set_image_index(unsigned int index)
{
	if (index >= sizeof(disks) / sizeof(disks[0]))
		return false;

	CdromId[0] = '\0';
	CdromLabel[0] = '\0';

	if (disks[index].fname == NULL) {
		SysPrintf("missing disk #%u\n", index);
		CDR_shutdown();

		// RetroArch specifies "no disk" with index == count,
		// so don't fail here..
		disk_current_index = index;
		return true;
	}

	SysPrintf("switching to disk %u: \"%s\" #%d\n", index,
		disks[index].fname, disks[index].internal_index);

	cdrIsoMultidiskSelect = disks[index].internal_index;
	set_cd_image(disks[index].fname);
	if (ReloadCdromPlugin() < 0) {
		SysPrintf("failed to load cdr plugin\n");
		return false;
	}
	if (CDR_open() < 0) {
		SysPrintf("failed to open cdr plugin\n");
		return false;
	}

	if (!disk_ejected) {
		SetCdOpenCaseTime(time(NULL) + 2);
		LidInterrupt();
	}

	disk_current_index = index;
	return true;
}

static unsigned int disk_get_num_images(void)
{
	return disk_count;
}

static bool disk_replace_image_index(unsigned index,
	const struct retro_game_info *info)
{
	char *old_fname;
	bool ret = true;

	if (index >= sizeof(disks) / sizeof(disks[0]))
		return false;

	old_fname = disks[index].fname;
	disks[index].fname = NULL;
	disks[index].internal_index = 0;

	if (info != NULL) {
		disks[index].fname = strdup(info->path);
		if (index == disk_current_index)
			ret = disk_set_image_index(index);
	}

	if (old_fname != NULL)
		free(old_fname);

	return ret;
}

static bool disk_add_image_index(void)
{
	if (disk_count >= 8)
		return false;

	disk_count++;
	return true;
}

static struct retro_disk_control_callback disk_control = {
	.set_eject_state = disk_set_eject_state,
	.get_eject_state = disk_get_eject_state,
	.get_image_index = disk_get_image_index,
	.set_image_index = disk_set_image_index,
	.get_num_images = disk_get_num_images,
	.replace_image_index = disk_replace_image_index,
	.add_image_index = disk_add_image_index,
};

// just in case, maybe a win-rt port in the future?
#ifdef _WIN32
#define SLASH '\\'
#else
#define SLASH '/'
#endif

static char base_dir[PATH_MAX];

static bool read_m3u(const char *file)
{
	char line[PATH_MAX];
	char name[PATH_MAX];
	FILE *f = fopen(file, "r");
	if (!f)
		return false;

	while (fgets(line, sizeof(line), f) && disk_count < sizeof(disks) / sizeof(disks[0])) {
		if (line[0] == '#')
			continue;
		char *carrige_return = strchr(line, '\r');
		if (carrige_return)
			*carrige_return = '\0';
		char *newline = strchr(line, '\n');
		if (newline)
			*newline = '\0';

		if (line[0] != '\0')
		{
			snprintf(name, sizeof(name), "%s%c%s", base_dir, SLASH, line);
			disks[disk_count++].fname = strdup(name);
		}
	}

	fclose(f);
	return (disk_count != 0);
}

static void extract_directory(char *buf, const char *path, size_t size)
{
   char *base;
   strncpy(buf, path, size - 1);
   buf[size - 1] = '\0';

   base = strrchr(buf, '/');
   if (!base)
      base = strrchr(buf, '\\');

   if (base)
      *base = '\0';
   else
   {
      buf[0] = '.';
      buf[1] = '\0';
   }
}

#if defined(__QNX__) || defined(_WIN32)
/* Blackberry QNX doesn't have strcasestr */

/*
 * Find the first occurrence of find in s, ignore case.
 */
char *
strcasestr(const char *s, const char*find)
{
	char c, sc;
	size_t len;

	if ((c = *find++) != 0) {
		c = tolower((unsigned char)c);
		len = strlen(find);
		do {
			do {
				if ((sc = *s++) == 0)
					return (NULL);
			} while ((char)tolower((unsigned char)sc) != c);
		} while (strncasecmp(s, find, len) != 0);
		s--;
	}
	return ((char *)s);
}
#endif

bool retro_load_game(const struct retro_game_info *info)
{
	size_t i;
	bool is_m3u = (strcasestr(info->path, ".m3u") != NULL);

   struct retro_input_descriptor desc[] = {
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT,  "D-Pad Left" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP,    "D-Pad Up" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN,  "D-Pad Down" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B,     "Cross" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A,     "Circle" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X,     "Triangle" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y,     "Square" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L,     "L1" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2,    "L2" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3,    "L3" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R,     "R1" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2,    "R2" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3,    "R3" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,    "Select" },
      { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START,    "Start" },
      { 0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X, "Left Analog X" },
      { 0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y, "Left Analog Y" },
      { 0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X, "Right Analog X" },
      { 0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y, "Right Analog Y" },


      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT,  "D-Pad Left" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP,    "D-Pad Up" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN,  "D-Pad Down" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B,     "Cross" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A,     "Circle" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X,     "Triangle" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y,     "Square" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L,     "L1" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2,    "L2" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3,    "L3" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R,     "R1" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2,    "R2" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3,    "R3" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,    "Select" },
      { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START,    "Start" },
      { 1, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X, "Left Analog X" },
      { 1, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y, "Left Analog Y" },
      { 1, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X, "Right Analog X" },
      { 1, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y, "Right Analog Y" },

      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT,  "D-Pad Left" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP,    "D-Pad Up" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN,  "D-Pad Down" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B,     "Cross" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A,     "Circle" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X,     "Triangle" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y,     "Square" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L,     "L1" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2,    "L2" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3,    "L3" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R,     "R1" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2,    "R2" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3,    "R3" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,    "Select" },
      { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START,    "Start" },
      { 2, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X, "Left Analog X" },
      { 2, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y, "Left Analog Y" },
      { 2, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X, "Right Analog X" },
      { 2, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y, "Right Analog Y" },

      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT,  "D-Pad Left" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP,    "D-Pad Up" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN,  "D-Pad Down" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B,     "Cross" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A,     "Circle" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X,     "Triangle" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y,     "Square" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L,     "L1" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2,    "L2" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3,    "L3" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R,     "R1" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2,    "R2" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3,    "R3" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,    "Select" },
      { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START,    "Start" },
      { 3, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X, "Left Analog X" },
      { 3, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y, "Left Analog Y" },
      { 3, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X, "Right Analog X" },
      { 3, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y, "Right Analog Y" },

      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT,  "D-Pad Left" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP,    "D-Pad Up" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN,  "D-Pad Down" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B,     "Cross" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A,     "Circle" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X,     "Triangle" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y,     "Square" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L,     "L1" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2,    "L2" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3,    "L3" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R,     "R1" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2,    "R2" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3,    "R3" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,    "Select" },
      { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START,    "Start" },
      { 4, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X, "Left Analog X" },
      { 4, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y, "Left Analog Y" },
      { 4, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X, "Right Analog X" },
      { 4, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y, "Right Analog Y" },

      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT,  "D-Pad Left" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP,    "D-Pad Up" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN,  "D-Pad Down" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B,     "Cross" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A,     "Circle" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X,     "Triangle" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y,     "Square" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L,     "L1" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2,    "L2" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3,    "L3" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R,     "R1" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2,    "R2" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3,    "R3" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,    "Select" },
      { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START,    "Start" }, 
      { 5, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X, "Left Analog X" },
      { 5, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y, "Left Analog Y" },
      { 5, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X, "Right Analog X" },
      { 5, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y, "Right Analog Y" },

      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT,  "D-Pad Left" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP,    "D-Pad Up" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN,  "D-Pad Down" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B,     "Cross" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A,     "Circle" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X,     "Triangle" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y,     "Square" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L,     "L1" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2,    "L2" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3,    "L3" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R,     "R1" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2,    "R2" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3,    "R3" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,    "Select" },
      { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START,    "Start" }, 
      { 6, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X, "Left Analog X" },
      { 6, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y, "Left Analog Y" },
      { 6, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X, "Right Analog X" },
      { 6, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y, "Right Analog Y" },

      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT,  "D-Pad Left" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP,    "D-Pad Up" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN,  "D-Pad Down" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B,     "Cross" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A,     "Circle" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X,     "Triangle" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y,     "Square" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L,     "L1" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2,    "L2" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L3,    "L3" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R,     "R1" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2,    "R2" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R3,    "R3" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,    "Select" },
      { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START,    "Start" }, 
      { 7, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X, "Left Analog X" },
      { 7, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y, "Left Analog Y" },
      { 7, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X, "Right Analog X" },
      { 7, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y, "Right Analog Y" },

      { 0 },
   };

   environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);

#ifdef FRONTEND_SUPPORTS_RGB565
	enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
	if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
		SysPrintf("RGB565 supported, using it\n");
	}
#endif

	if (info == NULL || info->path == NULL) {
		SysPrintf("info->path required\n");
		return false;
	}

	if (plugins_opened) {
		ClosePlugins();
		plugins_opened = 0;
	}

	for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
		if (disks[i].fname != NULL) {
			free(disks[i].fname);
			disks[i].fname = NULL;
		}
		disks[i].internal_index = 0;
	}

	disk_current_index = 0;
	extract_directory(base_dir, info->path, sizeof(base_dir));

	if (is_m3u) {
		if (!read_m3u(info->path)) {
			SysPrintf("failed to read m3u file\n");
			return false;
		}
	} else {
		disk_count = 1;
		disks[0].fname = strdup(info->path);
	}

	set_cd_image(disks[0].fname);

	/* have to reload after set_cd_image for correct cdr plugin */
	if (LoadPlugins() == -1) {
		SysPrintf("failed to load plugins\n");
		return false;
	}

	plugins_opened = 1;
	NetOpened = 0;

	if (OpenPlugins() == -1) {
		SysPrintf("failed to open plugins\n");
		return false;
	}

	plugin_call_rearmed_cbs();
	dfinput_activate();

	Config.PsxAuto = 1;
	if (CheckCdrom() == -1) {
		SysPrintf("unsupported/invalid CD image: %s\n", info->path);
		return false;
	}

	SysReset();

	if (LoadCdrom() == -1) {
		SysPrintf("could not load CD-ROM!\n");
		return false;
	}
	emu_on_new_cd(0);

	// multidisk images
	if (!is_m3u) {
		disk_count = cdrIsoMultidiskCount < 8 ? cdrIsoMultidiskCount : 8;
		for (i = 1; i < sizeof(disks) / sizeof(disks[0]) && i < cdrIsoMultidiskCount; i++) {
			disks[i].fname = strdup(info->path);
			disks[i].internal_index = i;
		}
	}

	return true;
}

bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
{
	return false;
}

void retro_unload_game(void) 
{
}

unsigned retro_get_region(void)
{
	return is_pal_mode ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
}

void *retro_get_memory_data(unsigned id)
{
	if (id == RETRO_MEMORY_SAVE_RAM)
		return Mcd1Data;
	else
		return NULL;
}

size_t retro_get_memory_size(unsigned id)
{
	if (id == RETRO_MEMORY_SAVE_RAM)
		return MCD_SIZE;
	else
		return 0;
}

void retro_reset(void)
{
	SysReset();
}

static const unsigned short retro_psx_map[] = {
	[RETRO_DEVICE_ID_JOYPAD_B]	= 1 << DKEY_CROSS,
	[RETRO_DEVICE_ID_JOYPAD_Y]	= 1 << DKEY_SQUARE,
	[RETRO_DEVICE_ID_JOYPAD_SELECT]	= 1 << DKEY_SELECT,
	[RETRO_DEVICE_ID_JOYPAD_START]	= 1 << DKEY_START,
	[RETRO_DEVICE_ID_JOYPAD_UP]	= 1 << DKEY_UP,
	[RETRO_DEVICE_ID_JOYPAD_DOWN]	= 1 << DKEY_DOWN,
	[RETRO_DEVICE_ID_JOYPAD_LEFT]	= 1 << DKEY_LEFT,
	[RETRO_DEVICE_ID_JOYPAD_RIGHT]	= 1 << DKEY_RIGHT,
	[RETRO_DEVICE_ID_JOYPAD_A]	= 1 << DKEY_CIRCLE,
	[RETRO_DEVICE_ID_JOYPAD_X]	= 1 << DKEY_TRIANGLE,
	[RETRO_DEVICE_ID_JOYPAD_L]	= 1 << DKEY_L1,
	[RETRO_DEVICE_ID_JOYPAD_R]	= 1 << DKEY_R1,
	[RETRO_DEVICE_ID_JOYPAD_L2]	= 1 << DKEY_L2,
	[RETRO_DEVICE_ID_JOYPAD_R2]	= 1 << DKEY_R2,
	[RETRO_DEVICE_ID_JOYPAD_L3]	= 1 << DKEY_L3,
	[RETRO_DEVICE_ID_JOYPAD_R3]	= 1 << DKEY_R3,
};
#define RETRO_PSX_MAP_LEN (sizeof(retro_psx_map) / sizeof(retro_psx_map[0]))

static void update_variables(bool in_flight)
{
   struct retro_variable var;
   
   var.value = NULL;
   var.key = "pcsx_rearmed_frameskip";

   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
      pl_rearmed_cbs.frameskip = atoi(var.value);

   var.value = NULL;
   var.key = "pcsx_rearmed_region";

   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
   {
      Config.PsxAuto = 0;
      if (strcmp(var.value, "Automatic") == 0)
         Config.PsxAuto = 1;
      else if (strcmp(var.value, "NTSC") == 0)
         Config.PsxType = 0;
      else if (strcmp(var.value, "PAL") == 0)
         Config.PsxType = 1;
   }

   var.value = NULL;
   var.key = "pcsx_rearmed_pad1type";

   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
   {
      in_type1 = PSE_PAD_TYPE_STANDARD;
      if (strcmp(var.value, "analog") == 0)
         in_type1 = PSE_PAD_TYPE_ANALOGPAD;
   }

   var.value = NULL;
   var.key = "pcsx_rearmed_pad2type";

   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
   {
      in_type2 = PSE_PAD_TYPE_STANDARD;
      if (strcmp(var.value, "analog") == 0)
         in_type2 = PSE_PAD_TYPE_ANALOGPAD;
   }

#ifdef __ARM_NEON__
   var.value = "NULL";
   var.key = "pcsx_rearmed_neon_interlace_enable";

   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
   {
      if (strcmp(var.value, "disabled") == 0)
         pl_rearmed_cbs.gpu_neon.allow_interlace = 0;
      else if (strcmp(var.value, "enabled") == 0)
         pl_rearmed_cbs.gpu_neon.allow_interlace = 1;
   }

   var.value = NULL;
   var.key = "pcsx_rearmed_neon_enhancement_enable";

   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
   {
      if (strcmp(var.value, "disabled") == 0)
         pl_rearmed_cbs.gpu_neon.enhancement_enable = 0;
      else if (strcmp(var.value, "enabled") == 0)
         pl_rearmed_cbs.gpu_neon.enhancement_enable = 1;
   }

   var.value = NULL;
   var.key = "pcsx_rearmed_neon_enhancement_no_main";

   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
   {
      if (strcmp(var.value, "disabled") == 0)
         pl_rearmed_cbs.gpu_neon.enhancement_no_main = 0;
      else if (strcmp(var.value, "enabled") == 0)
         pl_rearmed_cbs.gpu_neon.enhancement_no_main = 1;
   }
#endif

   var.value = "NULL";
   var.key = "pcsx_rearmed_duping_enable";

   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
   {
      if (strcmp(var.value, "off") == 0)
         duping_enable = false;
      else if (strcmp(var.value, "on") == 0)
         duping_enable = true;
   }

#ifndef DRC_DISABLE
   var.value = NULL;
   var.key = "pcsx_rearmed_drc";

   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
   {
      R3000Acpu *prev_cpu = psxCpu;

      if (strcmp(var.value, "disabled") == 0)
         Config.Cpu = CPU_INTERPRETER;
      else if (strcmp(var.value, "enabled") == 0)
         Config.Cpu = CPU_DYNAREC;

      psxCpu = (Config.Cpu == CPU_INTERPRETER) ? &psxInt : &psxRec;
      if (psxCpu != prev_cpu) {
         prev_cpu->Shutdown();
         psxCpu->Init();
         psxCpu->Reset(); // not really a reset..
      }
   }
#endif

   var.value = "NULL";
   var.key = "pcsx_rearmed_spu_reverb";

   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
   {
      if (strcmp(var.value, "off") == 0)
         spu_config.iUseReverb = false;
      else if (strcmp(var.value, "on") == 0)
         spu_config.iUseReverb = true;
   }

   var.value = "NULL";
   var.key = "pcsx_rearmed_spu_interpolation";

   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
   {
      if (strcmp(var.value, "simple") == 0)
         spu_config.iUseInterpolation = 1;
      else if (strcmp(var.value, "gaussian") == 0)
         spu_config.iUseInterpolation = 2;
      else if (strcmp(var.value, "cubic") == 0)
         spu_config.iUseInterpolation = 3;
      else if (strcmp(var.value, "off") == 0)
         spu_config.iUseInterpolation = 0;
   }

   if (in_flight) {
      // inform core things about possible config changes
      plugin_call_rearmed_cbs();

      if (GPU_open != NULL && GPU_close != NULL) {
         GPU_close();
         GPU_open(&gpuDisp, "PCSX", NULL);
      }

      dfinput_activate();
   }
}

void retro_run(void) 
{
	int i;

	input_poll_cb();

	bool updated = false;
	if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
		update_variables(true);

	in_keystate = 0;
	for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
		if (input_state_cb(1, RETRO_DEVICE_JOYPAD, 0, i))
			in_keystate |= retro_psx_map[i];
	in_keystate <<= 16;
	for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
		if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, i))
			in_keystate |= retro_psx_map[i];

	if (in_type1 == PSE_PAD_TYPE_ANALOGPAD)
	{
		in_a1[0] = (input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X) / 256) + 128;
		in_a1[1] = (input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y) / 256) + 128;
		in_a2[0] = (input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X) / 256) + 128;
		in_a2[1] = (input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y) / 256) + 128;
	}

	stop = 0;
	psxCpu->Execute();

	video_cb((vout_fb_dirty || !vout_can_dupe || !duping_enable) ? vout_buf : NULL,
		vout_width, vout_height, vout_width * 2);
	vout_fb_dirty = 0;
}

static bool try_use_bios(const char *path)
{
	FILE *f;
	long size;
	const char *name;

	f = fopen(path, "rb");
	if (f == NULL)
		return false;

	fseek(f, 0, SEEK_END);
	size = ftell(f);
	fclose(f);

	if (size != 512 * 1024)
		return false;

	name = strrchr(path, SLASH);
	if (name++ == NULL)
		name = path;
	snprintf(Config.Bios, sizeof(Config.Bios), "%s", name);
	return true;
}

#if 1
#include <sys/types.h>
#include <dirent.h>

static bool find_any_bios(const char *dirpath, char *path, size_t path_size)
{
	DIR *dir;
	struct dirent *ent;
	bool ret = false;

	dir = opendir(dirpath);
	if (dir == NULL)
		return false;

	while ((ent = readdir(dir))) {
		if (strncasecmp(ent->d_name, "scph", 4) != 0)
			continue;

		snprintf(path, path_size, "%s/%s", dirpath, ent->d_name);
		ret = try_use_bios(path);
		if (ret)
			break;
	}
	closedir(dir);
	return ret;
}
#else
#define find_any_bios(...) false
#endif

static void check_system_specs(void)
{
   unsigned level = 6;
   environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
}

void retro_init(void)
{
	const char *bios[] = { "scph1001", "scph5501", "scph7001" };
	const char *dir;
	char path[256];
	int i, ret;
	bool found_bios = false;

#ifdef __MACH__
	// magic sauce to make the dynarec work on iOS
	syscall(SYS_ptrace, 0 /*PTRACE_TRACEME*/, 0, 0, 0);
#endif

	ret = emu_core_preinit();
	ret |= emu_core_init();
	if (ret != 0) {
		SysPrintf("PCSX init failed.\n");
		exit(1);
	}

#if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200112L)
	posix_memalign(&vout_buf, 16, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
#else
	vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
#endif

	if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir)
	{
		snprintf(Config.BiosDir, sizeof(Config.BiosDir), "%s/", dir);

		for (i = 0; i < sizeof(bios) / sizeof(bios[0]); i++) {
			snprintf(path, sizeof(path), "%s/%s.bin", dir, bios[i]);
			found_bios = try_use_bios(path);
			if (found_bios)
				break;
		}

		if (!found_bios)
			found_bios = find_any_bios(dir, path, sizeof(path));
	}
	if (found_bios) {
		SysPrintf("found BIOS file: %s\n", Config.Bios);
	}
	else
	{
		SysPrintf("no BIOS files found.\n");
		struct retro_message msg = 
		{
			"no BIOS found, expect bugs!",
			180
		};
		environ_cb(RETRO_ENVIRONMENT_SET_MESSAGE, (void*)&msg);
	}

	environ_cb(RETRO_ENVIRONMENT_GET_CAN_DUPE, &vout_can_dupe);
	environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
	environ_cb(RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE, &rumble);

	/* Set how much slower PSX CPU runs * 100 (so that 200 is 2 times)
	 * we have to do this because cache misses and some IO penalties
	 * are not emulated. Warning: changing this may break compatibility. */
	cycle_multiplier = 175;
#ifdef HAVE_PRE_ARMV7
	cycle_multiplier = 200;
#endif
	pl_rearmed_cbs.gpu_peops.iUseDither = 1;
	spu_config.iUseFixedUpdates = 1;

	McdDisable[0] = 0;
	McdDisable[1] = 1;
	init_memcard(Mcd1Data);

	SaveFuncs.open = save_open;
	SaveFuncs.read = save_read;
	SaveFuncs.write = save_write;
	SaveFuncs.seek = save_seek;
	SaveFuncs.close = save_close;

	update_variables(false);
	check_system_specs();
}

void retro_deinit(void)
{
	SysClose();
	free(vout_buf);
	vout_buf = NULL;
}