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libretro: drop sram clear
[picodrive.git] / platform / libretro / libretro.c
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7612bf90 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
695typedef struct patch
696{
697 unsigned int addr;
698 unsigned short data;
699 unsigned char comp;
700} patch;
701
702extern void decode(char *buff, patch *dest);
703extern uint16_t m68k_read16(uint32_t a);
704extern void m68k_write16(uint32_t a, uint16_t d);
705
706void retro_cheat_reset(void)
707{
708 int i=0;
709 unsigned int addr;
710
711 for (i = 0; i < PicoPatchCount; i++)
712 {
713 addr = PicoPatches[i].addr;
714 if (addr < Pico.romsize) {
715 if (PicoPatches[i].active)
716 *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
717 } else {
718 if (PicoPatches[i].active)
719 m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
720 }
721 }
722
723 PicoPatchUnload();
724}
725
726void retro_cheat_set(unsigned index, bool enabled, const char *code)
727{
728 patch pt;
729 int array_len = PicoPatchCount;
730 char codeCopy[256];
731 char *buff;
732
733 if (code=='\0') return;
734 strcpy(codeCopy,code);
735 buff = strtok(codeCopy,"+");
736
737 while (buff != NULL)
738 {
739 decode(buff, &pt);
740 if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
741 {
742 log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
743 return;
744 }
745
746 /* code was good, add it */
747 if (array_len < PicoPatchCount + 1)
748 {
749 void *ptr;
750 array_len *= 2;
751 array_len++;
752 ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
753 if (ptr == NULL) {
754 log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
755 return;
756 }
757 PicoPatches = ptr;
758 }
759 strcpy(PicoPatches[PicoPatchCount].code, buff);
760
761 PicoPatches[PicoPatchCount].active = enabled;
762 PicoPatches[PicoPatchCount].addr = pt.addr;
763 PicoPatches[PicoPatchCount].data = pt.data;
764 PicoPatches[PicoPatchCount].comp = pt.comp;
765 if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
766 PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
767 else
768 PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
769 PicoPatchCount++;
770
771 buff = strtok(NULL,"+");
772 }
773}
774
775/* multidisk support */
776static bool disk_ejected;
777static unsigned int disk_current_index;
778static unsigned int disk_count;
779static struct disks_state {
780 char *fname;
781} disks[8];
782
783static bool disk_set_eject_state(bool ejected)
784{
785 // TODO?
786 disk_ejected = ejected;
787 return true;
788}
789
790static bool disk_get_eject_state(void)
791{
792 return disk_ejected;
793}
794
795static unsigned int disk_get_image_index(void)
796{
797 return disk_current_index;
798}
799
800static bool disk_set_image_index(unsigned int index)
801{
802 enum cd_img_type cd_type;
803 int ret;
804
805 if (index >= sizeof(disks) / sizeof(disks[0]))
806 return false;
807
808 if (disks[index].fname == NULL) {
809 if (log_cb)
810 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
811
812 // RetroArch specifies "no disk" with index == count,
813 // so don't fail here..
814 disk_current_index = index;
815 return true;
816 }
817
818 if (log_cb)
819 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
820 disks[index].fname);
821
822 ret = -1;
823 cd_type = PicoCdCheck(disks[index].fname, NULL);
824 if (cd_type != CIT_NOT_CD)
825 ret = cdd_load(disks[index].fname, cd_type);
826 if (ret != 0) {
827 if (log_cb)
828 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
829 return 0;
830 }
831
832 disk_current_index = index;
833 return true;
834}
835
836static unsigned int disk_get_num_images(void)
837{
838 return disk_count;
839}
840
841static bool disk_replace_image_index(unsigned index,
842 const struct retro_game_info *info)
843{
844 bool ret = true;
845
846 if (index >= sizeof(disks) / sizeof(disks[0]))
847 return false;
848
849 if (disks[index].fname != NULL)
850 free(disks[index].fname);
851 disks[index].fname = NULL;
852
853 if (info != NULL) {
854 disks[index].fname = strdup(info->path);
855 if (index == disk_current_index)
856 ret = disk_set_image_index(index);
857 }
858
859 return ret;
860}
861
862static bool disk_add_image_index(void)
863{
864 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
865 return false;
866
867 disk_count++;
868 return true;
869}
870
871static struct retro_disk_control_callback disk_control = {
872 disk_set_eject_state,
873 disk_get_eject_state,
874 disk_get_image_index,
875 disk_set_image_index,
876 disk_get_num_images,
877 disk_replace_image_index,
878 disk_add_image_index,
879};
880
881static void disk_tray_open(void)
882{
883 if (log_cb)
884 log_cb(RETRO_LOG_INFO, "cd tray open\n");
885 disk_ejected = 1;
886}
887
888static void disk_tray_close(void)
889{
890 if (log_cb)
891 log_cb(RETRO_LOG_INFO, "cd tray close\n");
892 disk_ejected = 0;
893}
894
895
896static const char * const biosfiles_us[] = {
897 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
898};
899static const char * const biosfiles_eu[] = {
900 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
901};
902static const char * const biosfiles_jp[] = {
903 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
904};
905
906static void make_system_path(char *buf, size_t buf_size,
907 const char *name, const char *ext)
908{
909 const char *dir = NULL;
910
911 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
912 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
913 }
914 else {
915 snprintf(buf, buf_size, "%s%s", name, ext);
916 }
917}
918
919static const char *find_bios(int *region, const char *cd_fname)
920{
921 const char * const *files;
922 static char path[256];
923 int i, count;
924 FILE *f = NULL;
925
926 if (*region == 4) { // US
927 files = biosfiles_us;
928 count = sizeof(biosfiles_us) / sizeof(char *);
929 } else if (*region == 8) { // EU
930 files = biosfiles_eu;
931 count = sizeof(biosfiles_eu) / sizeof(char *);
932 } else if (*region == 1 || *region == 2) {
933 files = biosfiles_jp;
934 count = sizeof(biosfiles_jp) / sizeof(char *);
935 } else {
936 return NULL;
937 }
938
939 for (i = 0; i < count; i++)
940 {
941 make_system_path(path, sizeof(path), files[i], ".bin");
942 f = fopen(path, "rb");
943 if (f != NULL)
944 break;
945
946 make_system_path(path, sizeof(path), files[i], ".zip");
947 f = fopen(path, "rb");
948 if (f != NULL)
949 break;
950 }
951
952 if (f != NULL) {
953 if (log_cb)
954 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
955 fclose(f);
956 return path;
957 }
958
959 return NULL;
960}
961
7612bf90 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
7612bf90 1018 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
1019 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
1020 if (log_cb)
1021 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
1022 return false;
1023 }
1024
1025 if (info == NULL || info->path == NULL) {
1026 if (log_cb)
1027 log_cb(RETRO_LOG_ERROR, "info->path required\n");
1028 return false;
1029 }
1030
1031 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
1032 if (disks[i].fname != NULL) {
1033 free(disks[i].fname);
1034 disks[i].fname = NULL;
1035 }
1036 }
1037
1038 disk_current_index = 0;
1039 disk_count = 1;
1040 disks[0].fname = strdup(info->path);
1041
1042 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
1043
1044 media_type = PicoLoadMedia(info->path, carthw_path,
1045 find_bios, NULL);
1046
1047 switch (media_type) {
1048 case PM_BAD_DETECT:
1049 if (log_cb)
1050 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
1051 return false;
1052 case PM_BAD_CD:
1053 if (log_cb)
1054 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
1055 return false;
1056 case PM_BAD_CD_NO_BIOS:
1057 if (log_cb)
1058 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
1059 return false;
1060 case PM_ERROR:
1061 if (log_cb)
1062 log_cb(RETRO_LOG_ERROR, "Load error\n");
1063 return false;
1064 default:
1065 break;
1066 }
1067
1068 if (media_type == PM_MARK3)
1069 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1070 else
1071 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1072
1073 PicoLoopPrepare();
1074
1075 PicoWriteSound = snd_write;
1076 memset(sndBuffer, 0, sizeof(sndBuffer));
1077 PsndOut = sndBuffer;
1078 PsndRerate(0);
1079
1080 return true;
1081}
1082
1083bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1084{
1085 return false;
1086}
1087
1088void retro_unload_game(void)
1089{
1090}
1091
1092unsigned retro_get_region(void)
1093{
1094 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1095}
1096
1097void *retro_get_memory_data(unsigned type)
1098{
1099 uint8_t* data;
1100
1101 switch(type)
1102 {
1103 case RETRO_MEMORY_SAVE_RAM:
1104 if (PicoAHW & PAHW_MCD)
1105 data = Pico_mcd->bram;
1106 else
1107 data = SRam.data;
1108 break;
1109 case RETRO_MEMORY_SYSTEM_RAM:
1110 if (PicoAHW & PAHW_SMS)
1111 data = Pico.zram;
1112 else
1113 data = Pico.ram;
1114 break;
1115 default:
1116 data = NULL;
1117 break;
1118 }
1119
1120 return data;
1121}
1122
1123size_t retro_get_memory_size(unsigned type)
1124{
1125 unsigned int i;
1126 int sum;
1127
1128 switch(type)
1129 {
1130 case RETRO_MEMORY_SAVE_RAM:
1131 if (PicoAHW & PAHW_MCD)
1132 // bram
1133 return 0x2000;
1134
1135 if (Pico.m.frame_count == 0)
1136 return SRam.size;
1137
1138 // if game doesn't write to sram, don't report it to
1139 // libretro so that RA doesn't write out zeroed .srm
1140 for (i = 0, sum = 0; i < SRam.size; i++)
1141 sum |= SRam.data[i];
1142
1143 return (sum != 0) ? SRam.size : 0;
1144
1145 case RETRO_MEMORY_SYSTEM_RAM:
1146 if (PicoAHW & PAHW_SMS)
1147 return 0x2000;
1148 else
1149 return sizeof(Pico.ram);
1150
1151 default:
1152 return 0;
1153 }
1154
1155}
1156
1157void retro_reset(void)
1158{
1159 PicoReset();
1160}
1161
1162static const unsigned short retro_pico_map[] = {
1163 1 << GBTN_B,
1164 1 << GBTN_A,
1165 1 << GBTN_MODE,
1166 1 << GBTN_START,
1167 1 << GBTN_UP,
1168 1 << GBTN_DOWN,
1169 1 << GBTN_LEFT,
1170 1 << GBTN_RIGHT,
1171 1 << GBTN_C,
1172 1 << GBTN_Y,
1173 1 << GBTN_X,
1174 1 << GBTN_Z,
1175};
1176#define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1177
1178static void snd_write(int len)
1179{
1180 audio_batch_cb(PsndOut, len / 4);
1181}
1182
1183static enum input_device input_name_to_val(const char *name)
1184{
1185 if (strcmp(name, "3 button pad") == 0)
1186 return PICO_INPUT_PAD_3BTN;
1187 if (strcmp(name, "6 button pad") == 0)
1188 return PICO_INPUT_PAD_6BTN;
1189 if (strcmp(name, "None") == 0)
1190 return PICO_INPUT_NOTHING;
1191
1192 if (log_cb)
1193 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1194 return PICO_INPUT_PAD_3BTN;
1195}
1196
1197static void update_variables(void)
1198{
1199 struct retro_variable var;
1200
1201 var.value = NULL;
1202 var.key = "picodrive_input1";
1203 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1204 PicoSetInputDevice(0, input_name_to_val(var.value));
1205
1206 var.value = NULL;
1207 var.key = "picodrive_input2";
1208 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1209 PicoSetInputDevice(1, input_name_to_val(var.value));
1210
1211 var.value = NULL;
1212 var.key = "picodrive_sprlim";
1213 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1214 if (strcmp(var.value, "enabled") == 0)
1215 PicoOpt |= POPT_DIS_SPRITE_LIM;
1216 else
1217 PicoOpt &= ~POPT_DIS_SPRITE_LIM;
1218 }
1219
1220 var.value = NULL;
1221 var.key = "picodrive_ramcart";
1222 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1223 if (strcmp(var.value, "enabled") == 0)
1224 PicoOpt |= POPT_EN_MCD_RAMCART;
1225 else
1226 PicoOpt &= ~POPT_EN_MCD_RAMCART;
1227 }
1228
1229 int OldPicoRegionOverride = PicoRegionOverride;
1230 var.value = NULL;
1231 var.key = "picodrive_region";
1232 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1233 if (strcmp(var.value, "Auto") == 0)
1234 PicoRegionOverride = 0;
1235 else if (strcmp(var.value, "Japan NTSC") == 0)
1236 PicoRegionOverride = 1;
1237 else if (strcmp(var.value, "Japan PAL") == 0)
1238 PicoRegionOverride = 2;
1239 else if (strcmp(var.value, "US") == 0)
1240 PicoRegionOverride = 4;
1241 else if (strcmp(var.value, "Europe") == 0)
1242 PicoRegionOverride = 8;
1243 }
1244
1245 int OldPicoRegionFPSOverride = PicoRegionFPSOverride;
1246 var.value = NULL;
1247 var.key = "picodrive_region_fps";
1248 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1249 if (strcmp(var.value, "Auto") == 0)
1250 PicoRegionFPSOverride = 0;
1251 else if (strcmp(var.value, "NTSC") == 0)
1252 PicoRegionFPSOverride = 1;
1253 else if (strcmp(var.value, "PAL") == 0)
1254 PicoRegionFPSOverride = 2;
1255 }
1256
1257 // Update region, fps and sound flags if needed
1258 if (PicoRegionOverride != OldPicoRegionOverride ||
1259 PicoRegionFPSOverride != OldPicoRegionFPSOverride)
1260 {
1261 PicoDetectRegion();
1262 PicoLoopPrepare();
1263 PsndRerate(1);
1264 }
1265
1266 float old_user_vout_width = user_vout_width;
1267 var.value = NULL;
1268 var.key = "picodrive_aspect";
1269 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1270 if (strcmp(var.value, "4/3") == 0)
1271 user_vout_width = VOUT_4_3;
1272 else if (strcmp(var.value, "CRT") == 0)
1273 user_vout_width = VOUT_CRT;
1274 else
1275 user_vout_width = VOUT_PAR;
1276 }
1277
1278 var.value = NULL;
1279 var.key = "picodrive_overscan";
1280 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1281 if (strcmp(var.value, "enabled") == 0)
1282 show_overscan = true;
1283 else
1284 show_overscan = false;
1285 }
1286
1287 if (user_vout_width != old_user_vout_width)
1288 {
1289 // Update the geometry
1290 struct retro_system_av_info av_info;
1291 retro_get_system_av_info(&av_info);
1292 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1293 }
1294
1295#ifdef DRC_SH2
1296 var.value = NULL;
1297 var.key = "picodrive_drc";
1298 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1299 if (strcmp(var.value, "enabled") == 0)
1300 PicoOpt |= POPT_EN_DRC;
1301 else
1302 PicoOpt &= ~POPT_EN_DRC;
1303 }
1304#endif
1305#ifdef _3DS
1306 if(!ctr_svchack_successful)
1307 PicoOpt &= ~POPT_EN_DRC;
1308#endif
1309}
1310
1311void retro_run(void)
1312{
1313 bool updated = false;
1314 int pad, i;
1315
1316 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1317 update_variables();
1318
1319 input_poll_cb();
1320
1321 PicoPad[0] = PicoPad[1] = 0;
1322 for (pad = 0; pad < 2; pad++)
1323 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1324 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
1325 PicoPad[pad] |= retro_pico_map[i];
1326
1327 PicoPatchApply();
1328 PicoFrame();
1329
1330 video_cb((short *)vout_buf + vout_offset,
1331 vout_width, vout_height, vout_width * 2);
1332}
1333
1334static void check_system_specs(void)
1335{
1336 /* TODO - set different performance level for 32X - 6 for ARM dynarec, higher for interpreter core */
1337 unsigned level = 5;
1338 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1339}
1340
1341void retro_init(void)
1342{
1343 struct retro_log_callback log;
1344 int level;
1345
1346 level = 0;
1347 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1348
1349 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1350 log_cb = log.log;
1351 else
1352 log_cb = NULL;
1353
1354 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1355
1356#ifdef _3DS
1357 ctr_svchack_successful = ctr_svchack_init();
1358#elif defined(VITA)
1359 sceBlock = getVMBlock();
1360#endif
1361
1362 PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
1363 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1364 | POPT_EN_32X|POPT_EN_PWM
1365 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1366#ifdef __arm__
1367#ifdef _3DS
1368 if (ctr_svchack_successful)
1369#endif
1370 PicoOpt |= POPT_EN_DRC;
1371#endif
1372 PsndRate = 44100;
1373 PicoAutoRgnOrder = 0x184; // US, EU, JP
1374
1375 vout_width = 320;
1376 vout_height = 240;
1377#ifdef _3DS
1378 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1379#else
1380 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1381#endif
1382
1383 PicoInit();
1384 PicoDrawSetOutFormat(PDF_RGB555, 0);
1385 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1386
1387 //PicoMessage = plat_status_msg_busy_next;
1388 PicoMCDopenTray = disk_tray_open;
1389 PicoMCDcloseTray = disk_tray_close;
1390
1391 update_variables();
1392}
1393
1394void retro_deinit(void)
1395{
1396#ifdef _3DS
1397 linearFree(vout_buf);
1398#else
1399 free(vout_buf);
1400#endif
1401 vout_buf = NULL;
1402 PicoExit();
1403}
fast MegaDrive/MegaCD/32X emulator