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Add support for single-line cheats and PAR codes.
[picodrive.git] / platform / libretro / libretro.c
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CommitLineData
1/*
2 * libretro core glue for PicoDrive
3 * (C) notaz, 2013
4 * (C) aliaspider, 2016
5 * (C) Daniel De Matteis, 2013
6 *
7 * This work is licensed under the terms of MAME license.
8 * See COPYING file in the top-level directory.
9 */
10
11#define _GNU_SOURCE 1 // mremap
12#include <stdio.h>
13#include <stdarg.h>
14#include <string.h>
15#ifndef _WIN32
16#ifndef NO_MMAP
17#include <sys/mman.h>
18#endif
19#else
20#include <io.h>
21#include <windows.h>
22#include <sys/types.h>
23#endif
24#include <errno.h>
25#ifdef __MACH__
26#include <libkern/OSCacheControl.h>
27#endif
28
29#ifdef _3DS
30#include "3ds/3ds_utils.h"
31#define MEMOP_MAP 4
32#define MEMOP_UNMAP 5
33#define MEMOP_PROT 6
34
35int svcDuplicateHandle(unsigned int* out, unsigned int original);
36int svcCloseHandle(unsigned int handle);
37int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
38 unsigned int size, unsigned int type, unsigned int perm);
39void* linearMemAlign(size_t size, size_t alignment);
40void linearFree(void* mem);
41
42static int ctr_svchack_successful = 0;
43
44#elif defined(VITA)
45#define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
46
47#include <psp2/kernel/sysmem.h>
48static int sceBlock;
49int getVMBlock();
50int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
51
52#endif
53
54#include <pico/pico_int.h>
55#include <pico/state.h>
56#include <pico/patch.h>
57#include "../common/input_pico.h"
58#include "../common/version.h"
59#include "libretro.h"
60
61static retro_log_printf_t log_cb;
62static retro_video_refresh_t video_cb;
63static retro_input_poll_t input_poll_cb;
64static retro_input_state_t input_state_cb;
65static retro_environment_t environ_cb;
66static retro_audio_sample_batch_t audio_batch_cb;
67
68#define VOUT_MAX_WIDTH 320
69#define VOUT_MAX_HEIGHT 240
70
71static const float VOUT_PAR = 0.0;
72static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
73static const float VOUT_CRT = (224.0f * 1.29911f);
74
75bool show_overscan = false;
76
77static void *vout_buf;
78static int vout_width, vout_height, vout_offset;
79static float user_vout_width = 0.0;
80
81#ifdef _MSC_VER
82static short sndBuffer[2*44100/50];
83#else
84static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
85#endif
86
87static void snd_write(int len);
88
89#ifdef _WIN32
90#define SLASH '\\'
91#else
92#define SLASH '/'
93#endif
94
95/* functions called by the core */
96
97void cache_flush_d_inval_i(void *start, void *end)
98{
99#ifdef __arm__
100 size_t len = (char *)end - (char *)start;
101#if defined(__BLACKBERRY_QNX__)
102 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
103#elif defined(__MACH__)
104 sys_dcache_flush(start, len);
105 sys_icache_invalidate(start, len);
106#elif defined(_3DS)
107 ctr_flush_invalidate_cache();
108#elif defined(VITA)
109 sceKernelSyncVMDomain(sceBlock, start, len);
110#else
111 __clear_cache(start, end);
112#endif
113#endif
114}
115
116#ifdef _WIN32
117/* mmap() replacement for Windows
118 *
119 * Author: Mike Frysinger <vapier@gentoo.org>
120 * Placed into the public domain
121 */
122
123/* References:
124 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
125 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
126 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
127 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
128 */
129
130#define PROT_READ 0x1
131#define PROT_WRITE 0x2
132/* This flag is only available in WinXP+ */
133#ifdef FILE_MAP_EXECUTE
134#define PROT_EXEC 0x4
135#else
136#define PROT_EXEC 0x0
137#define FILE_MAP_EXECUTE 0
138#endif
139
140#define MAP_SHARED 0x01
141#define MAP_PRIVATE 0x02
142#define MAP_ANONYMOUS 0x20
143#define MAP_ANON MAP_ANONYMOUS
144#define MAP_FAILED ((void *) -1)
145
146#ifdef __USE_FILE_OFFSET64
147# define DWORD_HI(x) (x >> 32)
148# define DWORD_LO(x) ((x) & 0xffffffff)
149#else
150# define DWORD_HI(x) (0)
151# define DWORD_LO(x) (x)
152#endif
153
154static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
155{
156 uint32_t flProtect, dwDesiredAccess;
157 off_t end;
158 HANDLE mmap_fd, h;
159 void *ret;
160
161 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
162 return MAP_FAILED;
163 if (fd == -1) {
164 if (!(flags & MAP_ANON) || offset)
165 return MAP_FAILED;
166 } else if (flags & MAP_ANON)
167 return MAP_FAILED;
168
169 if (prot & PROT_WRITE) {
170 if (prot & PROT_EXEC)
171 flProtect = PAGE_EXECUTE_READWRITE;
172 else
173 flProtect = PAGE_READWRITE;
174 } else if (prot & PROT_EXEC) {
175 if (prot & PROT_READ)
176 flProtect = PAGE_EXECUTE_READ;
177 else if (prot & PROT_EXEC)
178 flProtect = PAGE_EXECUTE;
179 } else
180 flProtect = PAGE_READONLY;
181
182 end = length + offset;
183
184 if (fd == -1)
185 mmap_fd = INVALID_HANDLE_VALUE;
186 else
187 mmap_fd = (HANDLE)_get_osfhandle(fd);
188 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
189 if (h == NULL)
190 return MAP_FAILED;
191
192 if (prot & PROT_WRITE)
193 dwDesiredAccess = FILE_MAP_WRITE;
194 else
195 dwDesiredAccess = FILE_MAP_READ;
196 if (prot & PROT_EXEC)
197 dwDesiredAccess |= FILE_MAP_EXECUTE;
198 if (flags & MAP_PRIVATE)
199 dwDesiredAccess |= FILE_MAP_COPY;
200 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
201 if (ret == NULL) {
202 CloseHandle(h);
203 ret = MAP_FAILED;
204 }
205 return ret;
206}
207
208static void munmap(void *addr, size_t length)
209{
210 UnmapViewOfFile(addr);
211 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
212}
213#elif defined(NO_MMAP)
214#define PROT_EXEC 0x04
215#define MAP_FAILED 0
216#define PROT_READ 0
217#define PROT_WRITE 0
218#define MAP_PRIVATE 0
219#define MAP_ANONYMOUS 0
220
221void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
222{
223 return malloc(len);
224}
225
226void munmap(void *base_addr, size_t len)
227{
228 free(base_addr);
229}
230
231int mprotect(void *addr, size_t len, int prot)
232{
233 /* stub - not really needed at this point since this codepath has no dynarecs */
234 return 0;
235}
236
237#endif
238
239#ifndef MAP_ANONYMOUS
240#define MAP_ANONYMOUS MAP_ANON
241#endif
242
243#ifdef _3DS
244typedef struct
245{
246 unsigned int requested_map;
247 void* buffer;
248}pico_mmap_t;
249
250pico_mmap_t pico_mmaps[] = {
251 {0x02000000, 0},
252 {0x06000000, 0},
253 {NULL, 0}
254};
255
256void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
257{
258 (void)is_fixed;
259
260 if (ctr_svchack_successful)
261 {
262 pico_mmap_t* pico_mmap;
263
264 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
265 {
266 if ((pico_mmap->requested_map == addr))
267 {
268 unsigned int ptr_aligned, tmp;
269 unsigned int currentHandle;
270 unsigned int perm = 0b011;
271
272 if (need_exec)
273 perm = 0b111;
274
275 size = (size + 0xFFF) & ~0xFFF;
276 pico_mmap->buffer = malloc(size + 0x1000);
277 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
278
279 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
280
281 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
282 {
283 if (log_cb)
284 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
285 exit(1);
286 }
287
288 svcCloseHandle(currentHandle);
289 return (void*)pico_mmap->requested_map;
290 }
291 }
292 }
293
294 return malloc(size);
295}
296
297void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
298{
299 if (ctr_svchack_successful)
300 {
301 pico_mmap_t* pico_mmap;
302
303 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
304 {
305 if ((pico_mmap->requested_map == (unsigned int)ptr))
306 {
307 unsigned int ptr_aligned;
308 unsigned int currentHandle;
309 void* tmp;
310
311 oldsize = (oldsize + 0xFFF) & ~0xFFF;
312 newsize = (newsize + 0xFFF) & ~0xFFF;
313 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
314
315 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
316
317 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
318
319 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
320 if(!tmp)
321 return NULL;
322
323 pico_mmap->buffer = tmp;
324 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
325
326 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
327
328 svcCloseHandle(currentHandle);
329
330 return ptr;
331 }
332 }
333 }
334
335 return realloc(ptr, newsize);
336
337}
338void plat_munmap(void *ptr, size_t size)
339{
340 if (ctr_svchack_successful)
341 {
342 pico_mmap_t* pico_mmap;
343
344 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
345 {
346 if ((pico_mmap->requested_map == (unsigned int)ptr))
347 {
348 unsigned int ptr_aligned;
349 unsigned int currentHandle;
350
351 size = (size + 0xFFF) & ~0xFFF;
352 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
353
354 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
355
356 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
357
358 svcCloseHandle(currentHandle);
359
360 free(pico_mmap->buffer);
361 pico_mmap->buffer = NULL;
362 return;
363 }
364 }
365 }
366
367 free(ptr);
368}
369
370#else
371void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
372{
373 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
374 void *req, *ret;
375
376 req = (void *)addr;
377 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
378 if (ret == MAP_FAILED) {
379 if (log_cb)
380 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
381 return NULL;
382 }
383
384 if (addr != 0 && ret != (void *)addr) {
385 if (log_cb)
386 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
387 addr, ret);
388
389 if (is_fixed) {
390 munmap(ret, size);
391 return NULL;
392 }
393 }
394
395 return ret;
396}
397
398void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
399{
400#ifdef __linux__
401 void *ret = mremap(ptr, oldsize, newsize, 0);
402 if (ret == MAP_FAILED)
403 return NULL;
404
405 return ret;
406#else
407 void *tmp, *ret;
408 size_t preserve_size;
409
410 preserve_size = oldsize;
411 if (preserve_size > newsize)
412 preserve_size = newsize;
413 tmp = malloc(preserve_size);
414 if (tmp == NULL)
415 return NULL;
416 memcpy(tmp, ptr, preserve_size);
417
418 munmap(ptr, oldsize);
419 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
420 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
421 if (ret == MAP_FAILED) {
422 free(tmp);
423 return NULL;
424 }
425 memcpy(ret, tmp, preserve_size);
426 free(tmp);
427 return ret;
428#endif
429}
430
431void plat_munmap(void *ptr, size_t size)
432{
433 if (ptr != NULL)
434 munmap(ptr, size);
435}
436#endif
437
438int plat_mem_set_exec(void *ptr, size_t size)
439{
440#ifdef _WIN32
441 int ret = VirtualProtect(ptr,size,PAGE_EXECUTE_READWRITE,0);
442 if (ret == 0 && log_cb)
443 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, 0);
444#elif defined(_3DS)
445 int ret = -1;
446 if (ctr_svchack_successful)
447 {
448 unsigned int currentHandle;
449 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
450 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
451 size, MEMOP_PROT, 0b111);
452 svcCloseHandle(currentHandle);
453 ctr_flush_invalidate_cache();
454
455 }
456 else
457 {
458 if (log_cb)
459 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
460 exit(1);
461 }
462
463#elif defined(VITA)
464 int ret = sceKernelOpenVMDomain();
465#else
466 int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
467 if (ret != 0 && log_cb)
468 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
469#endif
470 return ret;
471}
472
473void emu_video_mode_change(int start_line, int line_count, int is_32cols)
474{
475 memset(vout_buf, 0, 320 * 240 * 2);
476 vout_width = is_32cols ? 256 : 320;
477 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
478 if (show_overscan == true) line_count += 16;
479 if (show_overscan == true) start_line -= 8;
480
481 vout_height = line_count;
482 vout_offset = vout_width * start_line;
483
484 // Update the geometry
485 struct retro_system_av_info av_info;
486 retro_get_system_av_info(&av_info);
487 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
488}
489
490void emu_32x_startup(void)
491{
492}
493
494void lprintf(const char *fmt, ...)
495{
496 char buffer[256];
497 va_list ap;
498 va_start(ap, fmt);
499 vsprintf(buffer, fmt, ap);
500 /* TODO - add 'level' param for warning/error messages? */
501 if (log_cb)
502 log_cb(RETRO_LOG_INFO, "%s", buffer);
503 va_end(ap);
504}
505
506/* libretro */
507void retro_set_environment(retro_environment_t cb)
508{
509 static const struct retro_variable vars[] = {
510 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
511 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
512 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
513 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
514 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
515 { "picodrive_region_fps", "Region FPS; Auto|NTSC|PAL" },
516 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
517 { "picodrive_overscan", "Show Overscan; disabled|enabled" },
518#ifdef DRC_SH2
519 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
520#endif
521 { NULL, NULL },
522 };
523
524 environ_cb = cb;
525
526 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
527}
528
529void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
530void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
531void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
532void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
533void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
534
535unsigned retro_api_version(void)
536{
537 return RETRO_API_VERSION;
538}
539
540void retro_set_controller_port_device(unsigned port, unsigned device)
541{
542}
543
544void retro_get_system_info(struct retro_system_info *info)
545{
546 memset(info, 0, sizeof(*info));
547 info->library_name = "PicoDrive";
548#ifndef GIT_VERSION
549#define GIT_VERSION ""
550#endif
551 info->library_version = VERSION GIT_VERSION;
552 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
553 info->need_fullpath = true;
554}
555
556void retro_get_system_av_info(struct retro_system_av_info *info)
557{
558 memset(info, 0, sizeof(*info));
559 info->timing.fps = Pico.m.pal ? 50 : 60;
560 info->timing.sample_rate = 44100;
561 info->geometry.base_width = vout_width;
562 info->geometry.base_height = vout_height;
563 info->geometry.max_width = vout_width;
564 info->geometry.max_height = vout_height;
565
566 float common_width = vout_width;
567 if (user_vout_width != 0)
568 common_width = user_vout_width;
569
570 info->geometry.aspect_ratio = common_width / vout_height;
571}
572
573/* savestates */
574struct savestate_state {
575 const char *load_buf;
576 char *save_buf;
577 size_t size;
578 size_t pos;
579};
580
581size_t state_read(void *p, size_t size, size_t nmemb, void *file)
582{
583 struct savestate_state *state = file;
584 size_t bsize = size * nmemb;
585
586 if (state->pos + bsize > state->size) {
587 if (log_cb)
588 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
589 state->pos + bsize, state->size);
590 bsize = state->size - state->pos;
591 if ((int)bsize <= 0)
592 return 0;
593 }
594
595 memcpy(p, state->load_buf + state->pos, bsize);
596 state->pos += bsize;
597 return bsize;
598}
599
600size_t state_write(void *p, size_t size, size_t nmemb, void *file)
601{
602 struct savestate_state *state = file;
603 size_t bsize = size * nmemb;
604
605 if (state->pos + bsize > state->size) {
606 if (log_cb)
607 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
608 state->pos + bsize, state->size);
609 bsize = state->size - state->pos;
610 if ((int)bsize <= 0)
611 return 0;
612 }
613
614 memcpy(state->save_buf + state->pos, p, bsize);
615 state->pos += bsize;
616 return bsize;
617}
618
619size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
620{
621 struct savestate_state *state = file;
622 size_t bsize = size * nmemb;
623
624 state->pos += bsize;
625 return bsize;
626}
627
628size_t state_eof(void *file)
629{
630 struct savestate_state *state = file;
631
632 return state->pos >= state->size;
633}
634
635int state_fseek(void *file, long offset, int whence)
636{
637 struct savestate_state *state = file;
638
639 switch (whence) {
640 case SEEK_SET:
641 state->pos = offset;
642 break;
643 case SEEK_CUR:
644 state->pos += offset;
645 break;
646 case SEEK_END:
647 state->pos = state->size + offset;
648 break;
649 }
650 return (int)state->pos;
651}
652
653/* savestate sizes vary wildly depending if cd/32x or
654 * carthw is active, so run the whole thing to get size */
655size_t retro_serialize_size(void)
656{
657 struct savestate_state state = { 0, };
658 int ret;
659
660 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
661 if (ret != 0)
662 return 0;
663
664 return state.pos;
665}
666
667bool retro_serialize(void *data, size_t size)
668{
669 struct savestate_state state = { 0, };
670 int ret;
671
672 state.save_buf = data;
673 state.size = size;
674 state.pos = 0;
675
676 ret = PicoStateFP(&state, 1, NULL, state_write,
677 NULL, state_fseek);
678 return ret == 0;
679}
680
681bool retro_unserialize(const void *data, size_t size)
682{
683 struct savestate_state state = { 0, };
684 int ret;
685
686 state.load_buf = data;
687 state.size = size;
688 state.pos = 0;
689
690 ret = PicoStateFP(&state, 0, state_read, NULL,
691 state_eof, state_fseek);
692 return ret == 0;
693}
694
695/* cheats - TODO */
696
697void retro_cheat_reset(void)
698{
699 int i=0;
700 unsigned int addr;
701
702 for (i = 0; i < PicoPatchCount; i++)
703 {
704 addr = PicoPatches[i].addr;
705 if (addr < Pico.romsize)
706 if (PicoPatches[i].active)
707 *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
708 else
709 if (PicoPatches[i].active)
710 m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
711 }
712
713 PicoPatchUnload();
714}
715
716void retro_cheat_set(unsigned index, bool enabled, const char *buff)
717{
718 struct patch
719 {
720 unsigned int addr;
721 unsigned short data;
722 } pt;
723 int array_len = 0;
724
725 //TODO: Split multi-line codes properly
726
727 decode(buff, &pt);
728 if (pt.addr == (unsigned int)-1 || pt.data == (unsigned short)-1){
729 log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
730 return;
731 }
732
733 /* code was good, add it */
734 if (array_len < PicoPatchCount + 1)
735 {
736 void *ptr;
737 array_len *= 2;
738 array_len++;
739 ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
740 if (ptr == NULL) {
741 log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
742 return;
743 }
744 PicoPatches = ptr;
745 }
746 strcpy(PicoPatches[PicoPatchCount].code, buff);
747
748 PicoPatches[PicoPatchCount].name[51] = "";
749 PicoPatches[PicoPatchCount].active = enabled;
750 PicoPatches[PicoPatchCount].addr = pt.addr;
751 PicoPatches[PicoPatchCount].data = pt.data;
752 if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
753 PicoPatches[PicoPatchCount].data_old = *(unsigned short *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
754 else
755 PicoPatches[PicoPatchCount].data_old = (unsigned short) m68k_read16(PicoPatches[PicoPatchCount].addr);
756 PicoPatchCount++;
757}
758
759/* multidisk support */
760static bool disk_ejected;
761static unsigned int disk_current_index;
762static unsigned int disk_count;
763static struct disks_state {
764 char *fname;
765} disks[8];
766
767static bool disk_set_eject_state(bool ejected)
768{
769 // TODO?
770 disk_ejected = ejected;
771 return true;
772}
773
774static bool disk_get_eject_state(void)
775{
776 return disk_ejected;
777}
778
779static unsigned int disk_get_image_index(void)
780{
781 return disk_current_index;
782}
783
784static bool disk_set_image_index(unsigned int index)
785{
786 enum cd_img_type cd_type;
787 int ret;
788
789 if (index >= sizeof(disks) / sizeof(disks[0]))
790 return false;
791
792 if (disks[index].fname == NULL) {
793 if (log_cb)
794 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
795
796 // RetroArch specifies "no disk" with index == count,
797 // so don't fail here..
798 disk_current_index = index;
799 return true;
800 }
801
802 if (log_cb)
803 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
804 disks[index].fname);
805
806 ret = -1;
807 cd_type = PicoCdCheck(disks[index].fname, NULL);
808 if (cd_type != CIT_NOT_CD)
809 ret = cdd_load(disks[index].fname, cd_type);
810 if (ret != 0) {
811 if (log_cb)
812 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
813 return 0;
814 }
815
816 disk_current_index = index;
817 return true;
818}
819
820static unsigned int disk_get_num_images(void)
821{
822 return disk_count;
823}
824
825static bool disk_replace_image_index(unsigned index,
826 const struct retro_game_info *info)
827{
828 bool ret = true;
829
830 if (index >= sizeof(disks) / sizeof(disks[0]))
831 return false;
832
833 if (disks[index].fname != NULL)
834 free(disks[index].fname);
835 disks[index].fname = NULL;
836
837 if (info != NULL) {
838 disks[index].fname = strdup(info->path);
839 if (index == disk_current_index)
840 ret = disk_set_image_index(index);
841 }
842
843 return ret;
844}
845
846static bool disk_add_image_index(void)
847{
848 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
849 return false;
850
851 disk_count++;
852 return true;
853}
854
855static struct retro_disk_control_callback disk_control = {
856 disk_set_eject_state,
857 disk_get_eject_state,
858 disk_get_image_index,
859 disk_set_image_index,
860 disk_get_num_images,
861 disk_replace_image_index,
862 disk_add_image_index,
863};
864
865static void disk_tray_open(void)
866{
867 if (log_cb)
868 log_cb(RETRO_LOG_INFO, "cd tray open\n");
869 disk_ejected = 1;
870}
871
872static void disk_tray_close(void)
873{
874 if (log_cb)
875 log_cb(RETRO_LOG_INFO, "cd tray close\n");
876 disk_ejected = 0;
877}
878
879
880static const char * const biosfiles_us[] = {
881 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
882};
883static const char * const biosfiles_eu[] = {
884 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
885};
886static const char * const biosfiles_jp[] = {
887 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
888};
889
890static void make_system_path(char *buf, size_t buf_size,
891 const char *name, const char *ext)
892{
893 const char *dir = NULL;
894
895 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
896 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
897 }
898 else {
899 snprintf(buf, buf_size, "%s%s", name, ext);
900 }
901}
902
903static const char *find_bios(int *region, const char *cd_fname)
904{
905 const char * const *files;
906 static char path[256];
907 int i, count;
908 FILE *f = NULL;
909
910 if (*region == 4) { // US
911 files = biosfiles_us;
912 count = sizeof(biosfiles_us) / sizeof(char *);
913 } else if (*region == 8) { // EU
914 files = biosfiles_eu;
915 count = sizeof(biosfiles_eu) / sizeof(char *);
916 } else if (*region == 1 || *region == 2) {
917 files = biosfiles_jp;
918 count = sizeof(biosfiles_jp) / sizeof(char *);
919 } else {
920 return NULL;
921 }
922
923 for (i = 0; i < count; i++)
924 {
925 make_system_path(path, sizeof(path), files[i], ".bin");
926 f = fopen(path, "rb");
927 if (f != NULL)
928 break;
929
930 make_system_path(path, sizeof(path), files[i], ".zip");
931 f = fopen(path, "rb");
932 if (f != NULL)
933 break;
934 }
935
936 if (f != NULL) {
937 if (log_cb)
938 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
939 fclose(f);
940 return path;
941 }
942
943 return NULL;
944}
945
946static void sram_reset()
947{
948 SRam.data = NULL;
949 SRam.start = 0;
950 SRam.end = 0;
951 SRam.flags = '\0';
952 SRam.unused2 = '\0';
953 SRam.changed = '\0' ;
954 SRam.eeprom_type = '\0';
955 SRam.unused3 = '\0';
956 SRam.eeprom_bit_cl = '\0';
957 SRam.eeprom_bit_in = '\0';
958 SRam.eeprom_bit_out = '\0';
959 SRam.size = 0;
960}
961
962bool retro_load_game(const struct retro_game_info *info)
963{
964 enum media_type_e media_type;
965 static char carthw_path[256];
966 size_t i;
967
968 struct retro_input_descriptor desc[] = {
969 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
970 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
971 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
972 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
973 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
974 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
975 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
976 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
977 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
978 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
979 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
980 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
981
982 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
983 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
984 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
985 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
986 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
987 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
988 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
989 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
990 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
991 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
992 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
993 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
994
995 { 0 },
996 };
997
998 struct retro_input_descriptor desc_sms[] = {
999 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1000 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1001 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1002 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1003 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1004 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1005 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1006
1007 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1008 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1009 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1010 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1011 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1012 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1013 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1014
1015 { 0 },
1016 };
1017
1018 sram_reset();
1019
1020 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
1021 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
1022 if (log_cb)
1023 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
1024 return false;
1025 }
1026
1027 if (info == NULL || info->path == NULL) {
1028 if (log_cb)
1029 log_cb(RETRO_LOG_ERROR, "info->path required\n");
1030 return false;
1031 }
1032
1033 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
1034 if (disks[i].fname != NULL) {
1035 free(disks[i].fname);
1036 disks[i].fname = NULL;
1037 }
1038 }
1039
1040 disk_current_index = 0;
1041 disk_count = 1;
1042 disks[0].fname = strdup(info->path);
1043
1044 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
1045
1046 media_type = PicoLoadMedia(info->path, carthw_path,
1047 find_bios, NULL);
1048
1049 switch (media_type) {
1050 case PM_BAD_DETECT:
1051 if (log_cb)
1052 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
1053 return false;
1054 case PM_BAD_CD:
1055 if (log_cb)
1056 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
1057 return false;
1058 case PM_BAD_CD_NO_BIOS:
1059 if (log_cb)
1060 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
1061 return false;
1062 case PM_ERROR:
1063 if (log_cb)
1064 log_cb(RETRO_LOG_ERROR, "Load error\n");
1065 return false;
1066 default:
1067 break;
1068 }
1069
1070 if (media_type == PM_MARK3)
1071 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1072 else
1073 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1074
1075 PicoLoopPrepare();
1076
1077 PicoWriteSound = snd_write;
1078 memset(sndBuffer, 0, sizeof(sndBuffer));
1079 PsndOut = sndBuffer;
1080 PsndRerate(0);
1081
1082 return true;
1083}
1084
1085bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1086{
1087 return false;
1088}
1089
1090void retro_unload_game(void)
1091{
1092}
1093
1094unsigned retro_get_region(void)
1095{
1096 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1097}
1098
1099void *retro_get_memory_data(unsigned type)
1100{
1101 uint8_t* data;
1102
1103 switch(type)
1104 {
1105 case RETRO_MEMORY_SAVE_RAM:
1106 if (PicoAHW & PAHW_MCD)
1107 data = Pico_mcd->bram;
1108 else
1109 data = SRam.data;
1110 break;
1111 case RETRO_MEMORY_SYSTEM_RAM:
1112 if (PicoAHW & PAHW_SMS)
1113 data = Pico.vramb;
1114 else
1115 data = Pico.ram;
1116 break;
1117 default:
1118 data = NULL;
1119 break;
1120 }
1121
1122 return data;
1123}
1124
1125size_t retro_get_memory_size(unsigned type)
1126{
1127 unsigned int i;
1128 int sum;
1129
1130 switch(type)
1131 {
1132 case RETRO_MEMORY_SAVE_RAM:
1133 if (PicoAHW & PAHW_MCD)
1134 // bram
1135 return 0x2000;
1136
1137 if (Pico.m.frame_count == 0)
1138 return SRam.size;
1139
1140 // if game doesn't write to sram, don't report it to
1141 // libretro so that RA doesn't write out zeroed .srm
1142 for (i = 0, sum = 0; i < SRam.size; i++)
1143 sum |= SRam.data[i];
1144
1145 return (sum != 0) ? SRam.size : 0;
1146
1147 case RETRO_MEMORY_SYSTEM_RAM:
1148 if (PicoAHW & PAHW_SMS)
1149 return sizeof(Pico.vramb);
1150 else
1151 return sizeof(Pico.ram);
1152
1153 default:
1154 return 0;
1155 }
1156
1157}
1158
1159void retro_reset(void)
1160{
1161 PicoReset();
1162}
1163
1164static const unsigned short retro_pico_map[] = {
1165 1 << GBTN_B,
1166 1 << GBTN_A,
1167 1 << GBTN_MODE,
1168 1 << GBTN_START,
1169 1 << GBTN_UP,
1170 1 << GBTN_DOWN,
1171 1 << GBTN_LEFT,
1172 1 << GBTN_RIGHT,
1173 1 << GBTN_C,
1174 1 << GBTN_Y,
1175 1 << GBTN_X,
1176 1 << GBTN_Z,
1177};
1178#define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1179
1180static void snd_write(int len)
1181{
1182 audio_batch_cb(PsndOut, len / 4);
1183}
1184
1185static enum input_device input_name_to_val(const char *name)
1186{
1187 if (strcmp(name, "3 button pad") == 0)
1188 return PICO_INPUT_PAD_3BTN;
1189 if (strcmp(name, "6 button pad") == 0)
1190 return PICO_INPUT_PAD_6BTN;
1191 if (strcmp(name, "None") == 0)
1192 return PICO_INPUT_NOTHING;
1193
1194 if (log_cb)
1195 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1196 return PICO_INPUT_PAD_3BTN;
1197}
1198
1199static void update_variables(void)
1200{
1201 struct retro_variable var;
1202
1203 var.value = NULL;
1204 var.key = "picodrive_input1";
1205 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1206 PicoSetInputDevice(0, input_name_to_val(var.value));
1207
1208 var.value = NULL;
1209 var.key = "picodrive_input2";
1210 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1211 PicoSetInputDevice(1, input_name_to_val(var.value));
1212
1213 var.value = NULL;
1214 var.key = "picodrive_sprlim";
1215 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1216 if (strcmp(var.value, "enabled") == 0)
1217 PicoOpt |= POPT_DIS_SPRITE_LIM;
1218 else
1219 PicoOpt &= ~POPT_DIS_SPRITE_LIM;
1220 }
1221
1222 var.value = NULL;
1223 var.key = "picodrive_ramcart";
1224 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1225 if (strcmp(var.value, "enabled") == 0)
1226 PicoOpt |= POPT_EN_MCD_RAMCART;
1227 else
1228 PicoOpt &= ~POPT_EN_MCD_RAMCART;
1229 }
1230
1231 int OldPicoRegionOverride = PicoRegionOverride;
1232 var.value = NULL;
1233 var.key = "picodrive_region";
1234 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1235 if (strcmp(var.value, "Auto") == 0)
1236 PicoRegionOverride = 0;
1237 else if (strcmp(var.value, "Japan NTSC") == 0)
1238 PicoRegionOverride = 1;
1239 else if (strcmp(var.value, "Japan PAL") == 0)
1240 PicoRegionOverride = 2;
1241 else if (strcmp(var.value, "US") == 0)
1242 PicoRegionOverride = 4;
1243 else if (strcmp(var.value, "Europe") == 0)
1244 PicoRegionOverride = 8;
1245 }
1246
1247 int OldPicoRegionFPSOverride = PicoRegionFPSOverride;
1248 var.value = NULL;
1249 var.key = "picodrive_region_fps";
1250 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1251 if (strcmp(var.value, "Auto") == 0)
1252 PicoRegionFPSOverride = 0;
1253 else if (strcmp(var.value, "NTSC") == 0)
1254 PicoRegionFPSOverride = 1;
1255 else if (strcmp(var.value, "PAL") == 0)
1256 PicoRegionFPSOverride = 2;
1257 }
1258
1259 // Update region, fps and sound flags if needed
1260 if (PicoRegionOverride != OldPicoRegionOverride ||
1261 PicoRegionFPSOverride != OldPicoRegionFPSOverride)
1262 {
1263 PicoDetectRegion();
1264 PicoLoopPrepare();
1265 PsndRerate(1);
1266 }
1267
1268 float old_user_vout_width = user_vout_width;
1269 var.value = NULL;
1270 var.key = "picodrive_aspect";
1271 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1272 if (strcmp(var.value, "4/3") == 0)
1273 user_vout_width = VOUT_4_3;
1274 else if (strcmp(var.value, "CRT") == 0)
1275 user_vout_width = VOUT_CRT;
1276 else
1277 user_vout_width = VOUT_PAR;
1278 }
1279
1280 var.value = NULL;
1281 var.key = "picodrive_overscan";
1282 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1283 if (strcmp(var.value, "enabled") == 0)
1284 show_overscan = true;
1285 else
1286 show_overscan = false;
1287 }
1288
1289 if (user_vout_width != old_user_vout_width)
1290 {
1291 // Update the geometry
1292 struct retro_system_av_info av_info;
1293 retro_get_system_av_info(&av_info);
1294 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1295 }
1296
1297#ifdef DRC_SH2
1298 var.value = NULL;
1299 var.key = "picodrive_drc";
1300 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1301 if (strcmp(var.value, "enabled") == 0)
1302 PicoOpt |= POPT_EN_DRC;
1303 else
1304 PicoOpt &= ~POPT_EN_DRC;
1305 }
1306#endif
1307#ifdef _3DS
1308 if(!ctr_svchack_successful)
1309 PicoOpt &= ~POPT_EN_DRC;
1310#endif
1311}
1312
1313void retro_run(void)
1314{
1315 bool updated = false;
1316 int pad, i;
1317
1318 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1319 update_variables();
1320
1321 input_poll_cb();
1322
1323 PicoPad[0] = PicoPad[1] = 0;
1324 for (pad = 0; pad < 2; pad++)
1325 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1326 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
1327 PicoPad[pad] |= retro_pico_map[i];
1328
1329 PicoPatchApply();
1330 PicoFrame();
1331
1332 video_cb((short *)vout_buf + vout_offset,
1333 vout_width, vout_height, vout_width * 2);
1334}
1335
1336static void check_system_specs(void)
1337{
1338 /* TODO - set different performance level for 32X - 6 for ARM dynarec, higher for interpreter core */
1339 unsigned level = 5;
1340 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1341}
1342
1343void retro_init(void)
1344{
1345 struct retro_log_callback log;
1346 int level;
1347
1348 level = 0;
1349 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1350
1351 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1352 log_cb = log.log;
1353 else
1354 log_cb = NULL;
1355
1356 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1357
1358#ifdef _3DS
1359 ctr_svchack_successful = ctr_svchack_init();
1360#elif defined(VITA)
1361 sceBlock = getVMBlock();
1362#endif
1363
1364 PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
1365 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1366 | POPT_EN_32X|POPT_EN_PWM
1367 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1368#ifdef __arm__
1369#ifdef _3DS
1370 if (ctr_svchack_successful)
1371#endif
1372 PicoOpt |= POPT_EN_DRC;
1373#endif
1374 PsndRate = 44100;
1375 PicoAutoRgnOrder = 0x184; // US, EU, JP
1376
1377 vout_width = 320;
1378 vout_height = 240;
1379#ifdef _3DS
1380 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1381#else
1382 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1383#endif
1384
1385 PicoInit();
1386 PicoDrawSetOutFormat(PDF_RGB555, 0);
1387 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1388
1389 //PicoMessage = plat_status_msg_busy_next;
1390 PicoMCDopenTray = disk_tray_open;
1391 PicoMCDcloseTray = disk_tray_close;
1392
1393 update_variables();
1394}
1395
1396void retro_deinit(void)
1397{
1398#ifdef _3DS
1399 linearFree(vout_buf);
1400#else
1401 free(vout_buf);
1402#endif
1403 vout_buf = NULL;
1404 PicoExit();
1405}
fast MegaDrive/MegaCD/32X emulator