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[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;
df925153 101 (void)len;
7612bf90 102#if defined(__BLACKBERRY_QNX__)
103 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
104#elif defined(__MACH__)
105 sys_dcache_flush(start, len);
106 sys_icache_invalidate(start, len);
107#elif defined(_3DS)
108 ctr_flush_invalidate_cache();
109#elif defined(VITA)
110 sceKernelSyncVMDomain(sceBlock, start, len);
111#else
112 __clear_cache(start, end);
113#endif
114#endif
115}
116
117#ifdef _WIN32
118/* mmap() replacement for Windows
119 *
120 * Author: Mike Frysinger <vapier@gentoo.org>
121 * Placed into the public domain
122 */
123
124/* References:
125 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
126 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
127 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
128 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
129 */
130
131#define PROT_READ 0x1
132#define PROT_WRITE 0x2
133/* This flag is only available in WinXP+ */
134#ifdef FILE_MAP_EXECUTE
135#define PROT_EXEC 0x4
136#else
137#define PROT_EXEC 0x0
138#define FILE_MAP_EXECUTE 0
139#endif
140
141#define MAP_SHARED 0x01
142#define MAP_PRIVATE 0x02
143#define MAP_ANONYMOUS 0x20
144#define MAP_ANON MAP_ANONYMOUS
145#define MAP_FAILED ((void *) -1)
146
147#ifdef __USE_FILE_OFFSET64
148# define DWORD_HI(x) (x >> 32)
149# define DWORD_LO(x) ((x) & 0xffffffff)
150#else
151# define DWORD_HI(x) (0)
152# define DWORD_LO(x) (x)
153#endif
154
155static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
156{
157 uint32_t flProtect, dwDesiredAccess;
158 off_t end;
159 HANDLE mmap_fd, h;
160 void *ret;
161
162 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
163 return MAP_FAILED;
164 if (fd == -1) {
165 if (!(flags & MAP_ANON) || offset)
166 return MAP_FAILED;
167 } else if (flags & MAP_ANON)
168 return MAP_FAILED;
169
170 if (prot & PROT_WRITE) {
171 if (prot & PROT_EXEC)
172 flProtect = PAGE_EXECUTE_READWRITE;
173 else
174 flProtect = PAGE_READWRITE;
175 } else if (prot & PROT_EXEC) {
176 if (prot & PROT_READ)
177 flProtect = PAGE_EXECUTE_READ;
178 else if (prot & PROT_EXEC)
179 flProtect = PAGE_EXECUTE;
180 } else
181 flProtect = PAGE_READONLY;
182
183 end = length + offset;
184
185 if (fd == -1)
186 mmap_fd = INVALID_HANDLE_VALUE;
187 else
188 mmap_fd = (HANDLE)_get_osfhandle(fd);
189 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
190 if (h == NULL)
191 return MAP_FAILED;
192
193 if (prot & PROT_WRITE)
194 dwDesiredAccess = FILE_MAP_WRITE;
195 else
196 dwDesiredAccess = FILE_MAP_READ;
197 if (prot & PROT_EXEC)
198 dwDesiredAccess |= FILE_MAP_EXECUTE;
199 if (flags & MAP_PRIVATE)
200 dwDesiredAccess |= FILE_MAP_COPY;
201 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
202 if (ret == NULL) {
203 CloseHandle(h);
204 ret = MAP_FAILED;
205 }
206 return ret;
207}
208
209static void munmap(void *addr, size_t length)
210{
211 UnmapViewOfFile(addr);
212 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
213}
214#elif defined(NO_MMAP)
215#define PROT_EXEC 0x04
216#define MAP_FAILED 0
217#define PROT_READ 0
218#define PROT_WRITE 0
219#define MAP_PRIVATE 0
220#define MAP_ANONYMOUS 0
221
222void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
223{
224 return malloc(len);
225}
226
227void munmap(void *base_addr, size_t len)
228{
229 free(base_addr);
230}
231
232int mprotect(void *addr, size_t len, int prot)
233{
234 /* stub - not really needed at this point since this codepath has no dynarecs */
235 return 0;
236}
237
238#endif
239
240#ifndef MAP_ANONYMOUS
241#define MAP_ANONYMOUS MAP_ANON
242#endif
243
244#ifdef _3DS
245typedef struct
246{
247 unsigned int requested_map;
248 void* buffer;
249}pico_mmap_t;
250
251pico_mmap_t pico_mmaps[] = {
252 {0x02000000, 0},
253 {0x06000000, 0},
254 {NULL, 0}
255};
256
257void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
258{
259 (void)is_fixed;
260
261 if (ctr_svchack_successful)
262 {
263 pico_mmap_t* pico_mmap;
264
265 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
266 {
267 if ((pico_mmap->requested_map == addr))
268 {
269 unsigned int ptr_aligned, tmp;
270 unsigned int currentHandle;
271 unsigned int perm = 0b011;
272
273 if (need_exec)
274 perm = 0b111;
275
276 size = (size + 0xFFF) & ~0xFFF;
277 pico_mmap->buffer = malloc(size + 0x1000);
278 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
279
280 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
281
282 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
283 {
284 if (log_cb)
285 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
286 exit(1);
287 }
288
289 svcCloseHandle(currentHandle);
290 return (void*)pico_mmap->requested_map;
291 }
292 }
293 }
294
295 return malloc(size);
296}
297
298void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
299{
300 if (ctr_svchack_successful)
301 {
302 pico_mmap_t* pico_mmap;
303
304 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
305 {
306 if ((pico_mmap->requested_map == (unsigned int)ptr))
307 {
308 unsigned int ptr_aligned;
309 unsigned int currentHandle;
310 void* tmp;
311
312 oldsize = (oldsize + 0xFFF) & ~0xFFF;
313 newsize = (newsize + 0xFFF) & ~0xFFF;
314 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
315
316 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
317
318 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
319
320 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
321 if(!tmp)
322 return NULL;
323
324 pico_mmap->buffer = tmp;
325 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
326
327 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
328
329 svcCloseHandle(currentHandle);
330
331 return ptr;
332 }
333 }
334 }
335
336 return realloc(ptr, newsize);
337
338}
339void plat_munmap(void *ptr, size_t size)
340{
341 if (ctr_svchack_successful)
342 {
343 pico_mmap_t* pico_mmap;
344
345 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
346 {
347 if ((pico_mmap->requested_map == (unsigned int)ptr))
348 {
349 unsigned int ptr_aligned;
350 unsigned int currentHandle;
351
352 size = (size + 0xFFF) & ~0xFFF;
353 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
354
355 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
356
357 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
358
359 svcCloseHandle(currentHandle);
360
361 free(pico_mmap->buffer);
362 pico_mmap->buffer = NULL;
363 return;
364 }
365 }
366 }
367
368 free(ptr);
369}
370
371#else
372void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
373{
374 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
375 void *req, *ret;
376
377 req = (void *)addr;
378 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
379 if (ret == MAP_FAILED) {
380 if (log_cb)
381 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
382 return NULL;
383 }
384
385 if (addr != 0 && ret != (void *)addr) {
386 if (log_cb)
387 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
388 addr, ret);
389
390 if (is_fixed) {
391 munmap(ret, size);
392 return NULL;
393 }
394 }
395
396 return ret;
397}
398
399void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
400{
401#ifdef __linux__
402 void *ret = mremap(ptr, oldsize, newsize, 0);
403 if (ret == MAP_FAILED)
404 return NULL;
405
406 return ret;
407#else
408 void *tmp, *ret;
409 size_t preserve_size;
410
411 preserve_size = oldsize;
412 if (preserve_size > newsize)
413 preserve_size = newsize;
414 tmp = malloc(preserve_size);
415 if (tmp == NULL)
416 return NULL;
417 memcpy(tmp, ptr, preserve_size);
418
419 munmap(ptr, oldsize);
420 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
421 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
422 if (ret == MAP_FAILED) {
423 free(tmp);
424 return NULL;
425 }
426 memcpy(ret, tmp, preserve_size);
427 free(tmp);
428 return ret;
429#endif
430}
431
432void plat_munmap(void *ptr, size_t size)
433{
434 if (ptr != NULL)
435 munmap(ptr, size);
436}
437#endif
438
df925153 439// if NULL is returned, static buffer is used
440void *plat_mem_get_for_drc(size_t size)
441{
442 void *mem = NULL;
443#ifdef VITA
444 sceKernelGetMemBlockBase(sceBlock, &mem);
445#endif
446 return mem;
447}
448
7612bf90 449int plat_mem_set_exec(void *ptr, size_t size)
450{
df925153 451 int ret = -1;
7612bf90 452#ifdef _WIN32
df925153 453 ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, 0);
7612bf90 454 if (ret == 0 && log_cb)
df925153 455 log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size,
456 GetLastError());
7612bf90 457#elif defined(_3DS)
7612bf90 458 if (ctr_svchack_successful)
459 {
460 unsigned int currentHandle;
461 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
462 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
463 size, MEMOP_PROT, 0b111);
464 svcCloseHandle(currentHandle);
465 ctr_flush_invalidate_cache();
466
467 }
468 else
469 {
470 if (log_cb)
471 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
472 exit(1);
473 }
474
475#elif defined(VITA)
df925153 476 ret = sceKernelOpenVMDomain();
7612bf90 477#else
df925153 478 ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
7612bf90 479 if (ret != 0 && log_cb)
480 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
481#endif
482 return ret;
483}
484
485void emu_video_mode_change(int start_line, int line_count, int is_32cols)
486{
24aab4da 487 struct retro_system_av_info av_info;
488
7612bf90 489 memset(vout_buf, 0, 320 * 240 * 2);
490 vout_width = is_32cols ? 256 : 320;
491 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
492 if (show_overscan == true) line_count += 16;
493 if (show_overscan == true) start_line -= 8;
494
495 vout_height = line_count;
496 vout_offset = vout_width * start_line;
497
498 // Update the geometry
7612bf90 499 retro_get_system_av_info(&av_info);
500 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
501}
502
503void emu_32x_startup(void)
504{
505}
506
507void lprintf(const char *fmt, ...)
508{
509 char buffer[256];
510 va_list ap;
511 va_start(ap, fmt);
512 vsprintf(buffer, fmt, ap);
513 /* TODO - add 'level' param for warning/error messages? */
514 if (log_cb)
515 log_cb(RETRO_LOG_INFO, "%s", buffer);
516 va_end(ap);
517}
518
519/* libretro */
520void retro_set_environment(retro_environment_t cb)
521{
522 static const struct retro_variable vars[] = {
523 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
524 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
525 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
526 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
527 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
7612bf90 528 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
529 { "picodrive_overscan", "Show Overscan; disabled|enabled" },
530#ifdef DRC_SH2
531 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
532#endif
533 { NULL, NULL },
534 };
535
536 environ_cb = cb;
537
538 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
539}
540
541void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
542void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
543void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
544void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
545void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
546
547unsigned retro_api_version(void)
548{
549 return RETRO_API_VERSION;
550}
551
552void retro_set_controller_port_device(unsigned port, unsigned device)
553{
554}
555
556void retro_get_system_info(struct retro_system_info *info)
557{
558 memset(info, 0, sizeof(*info));
559 info->library_name = "PicoDrive";
560#ifndef GIT_VERSION
561#define GIT_VERSION ""
562#endif
563 info->library_version = VERSION GIT_VERSION;
564 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
565 info->need_fullpath = true;
566}
567
568void retro_get_system_av_info(struct retro_system_av_info *info)
569{
24aab4da 570 float common_width;
571
7612bf90 572 memset(info, 0, sizeof(*info));
573 info->timing.fps = Pico.m.pal ? 50 : 60;
574 info->timing.sample_rate = 44100;
575 info->geometry.base_width = vout_width;
576 info->geometry.base_height = vout_height;
577 info->geometry.max_width = vout_width;
578 info->geometry.max_height = vout_height;
579
24aab4da 580 common_width = vout_width;
7612bf90 581 if (user_vout_width != 0)
582 common_width = user_vout_width;
583
584 info->geometry.aspect_ratio = common_width / vout_height;
585}
586
587/* savestates */
588struct savestate_state {
589 const char *load_buf;
590 char *save_buf;
591 size_t size;
592 size_t pos;
593};
594
595size_t state_read(void *p, size_t size, size_t nmemb, void *file)
596{
597 struct savestate_state *state = file;
598 size_t bsize = size * nmemb;
599
600 if (state->pos + bsize > state->size) {
601 if (log_cb)
602 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
603 state->pos + bsize, state->size);
604 bsize = state->size - state->pos;
605 if ((int)bsize <= 0)
606 return 0;
607 }
608
609 memcpy(p, state->load_buf + state->pos, bsize);
610 state->pos += bsize;
611 return bsize;
612}
613
614size_t state_write(void *p, size_t size, size_t nmemb, void *file)
615{
616 struct savestate_state *state = file;
617 size_t bsize = size * nmemb;
618
619 if (state->pos + bsize > state->size) {
620 if (log_cb)
621 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
622 state->pos + bsize, state->size);
623 bsize = state->size - state->pos;
624 if ((int)bsize <= 0)
625 return 0;
626 }
627
628 memcpy(state->save_buf + state->pos, p, bsize);
629 state->pos += bsize;
630 return bsize;
631}
632
633size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
634{
635 struct savestate_state *state = file;
636 size_t bsize = size * nmemb;
637
638 state->pos += bsize;
639 return bsize;
640}
641
642size_t state_eof(void *file)
643{
644 struct savestate_state *state = file;
645
646 return state->pos >= state->size;
647}
648
649int state_fseek(void *file, long offset, int whence)
650{
651 struct savestate_state *state = file;
652
653 switch (whence) {
654 case SEEK_SET:
655 state->pos = offset;
656 break;
657 case SEEK_CUR:
658 state->pos += offset;
659 break;
660 case SEEK_END:
661 state->pos = state->size + offset;
662 break;
663 }
664 return (int)state->pos;
665}
666
667/* savestate sizes vary wildly depending if cd/32x or
668 * carthw is active, so run the whole thing to get size */
669size_t retro_serialize_size(void)
670{
671 struct savestate_state state = { 0, };
672 int ret;
673
674 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
675 if (ret != 0)
676 return 0;
677
678 return state.pos;
679}
680
681bool retro_serialize(void *data, size_t size)
682{
683 struct savestate_state state = { 0, };
684 int ret;
685
686 state.save_buf = data;
687 state.size = size;
688 state.pos = 0;
689
690 ret = PicoStateFP(&state, 1, NULL, state_write,
691 NULL, state_fseek);
692 return ret == 0;
693}
694
695bool retro_unserialize(const void *data, size_t size)
696{
697 struct savestate_state state = { 0, };
698 int ret;
699
700 state.load_buf = data;
701 state.size = size;
702 state.pos = 0;
703
704 ret = PicoStateFP(&state, 0, state_read, NULL,
705 state_eof, state_fseek);
706 return ret == 0;
707}
708
709typedef struct patch
710{
711 unsigned int addr;
712 unsigned short data;
713 unsigned char comp;
714} patch;
715
716extern void decode(char *buff, patch *dest);
717extern uint16_t m68k_read16(uint32_t a);
718extern void m68k_write16(uint32_t a, uint16_t d);
719
720void retro_cheat_reset(void)
721{
722 int i=0;
723 unsigned int addr;
724
725 for (i = 0; i < PicoPatchCount; i++)
726 {
727 addr = PicoPatches[i].addr;
728 if (addr < Pico.romsize) {
729 if (PicoPatches[i].active)
730 *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
731 } else {
732 if (PicoPatches[i].active)
733 m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
734 }
735 }
736
737 PicoPatchUnload();
738}
739
740void retro_cheat_set(unsigned index, bool enabled, const char *code)
741{
742 patch pt;
743 int array_len = PicoPatchCount;
744 char codeCopy[256];
745 char *buff;
746
747 if (code=='\0') return;
748 strcpy(codeCopy,code);
749 buff = strtok(codeCopy,"+");
750
751 while (buff != NULL)
752 {
753 decode(buff, &pt);
754 if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
755 {
756 log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
757 return;
758 }
759
760 /* code was good, add it */
761 if (array_len < PicoPatchCount + 1)
762 {
763 void *ptr;
764 array_len *= 2;
765 array_len++;
766 ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
767 if (ptr == NULL) {
768 log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
769 return;
770 }
771 PicoPatches = ptr;
772 }
773 strcpy(PicoPatches[PicoPatchCount].code, buff);
774
775 PicoPatches[PicoPatchCount].active = enabled;
776 PicoPatches[PicoPatchCount].addr = pt.addr;
777 PicoPatches[PicoPatchCount].data = pt.data;
778 PicoPatches[PicoPatchCount].comp = pt.comp;
779 if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
780 PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
781 else
782 PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
783 PicoPatchCount++;
784
785 buff = strtok(NULL,"+");
786 }
787}
788
789/* multidisk support */
790static bool disk_ejected;
791static unsigned int disk_current_index;
792static unsigned int disk_count;
793static struct disks_state {
794 char *fname;
795} disks[8];
796
797static bool disk_set_eject_state(bool ejected)
798{
799 // TODO?
800 disk_ejected = ejected;
801 return true;
802}
803
804static bool disk_get_eject_state(void)
805{
806 return disk_ejected;
807}
808
809static unsigned int disk_get_image_index(void)
810{
811 return disk_current_index;
812}
813
814static bool disk_set_image_index(unsigned int index)
815{
816 enum cd_img_type cd_type;
817 int ret;
818
819 if (index >= sizeof(disks) / sizeof(disks[0]))
820 return false;
821
822 if (disks[index].fname == NULL) {
823 if (log_cb)
824 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
825
826 // RetroArch specifies "no disk" with index == count,
827 // so don't fail here..
828 disk_current_index = index;
829 return true;
830 }
831
832 if (log_cb)
833 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
834 disks[index].fname);
835
836 ret = -1;
837 cd_type = PicoCdCheck(disks[index].fname, NULL);
838 if (cd_type != CIT_NOT_CD)
839 ret = cdd_load(disks[index].fname, cd_type);
840 if (ret != 0) {
841 if (log_cb)
842 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
843 return 0;
844 }
845
846 disk_current_index = index;
847 return true;
848}
849
850static unsigned int disk_get_num_images(void)
851{
852 return disk_count;
853}
854
855static bool disk_replace_image_index(unsigned index,
856 const struct retro_game_info *info)
857{
858 bool ret = true;
859
860 if (index >= sizeof(disks) / sizeof(disks[0]))
861 return false;
862
863 if (disks[index].fname != NULL)
864 free(disks[index].fname);
865 disks[index].fname = NULL;
866
867 if (info != NULL) {
868 disks[index].fname = strdup(info->path);
869 if (index == disk_current_index)
870 ret = disk_set_image_index(index);
871 }
872
873 return ret;
874}
875
876static bool disk_add_image_index(void)
877{
878 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
879 return false;
880
881 disk_count++;
882 return true;
883}
884
885static struct retro_disk_control_callback disk_control = {
886 disk_set_eject_state,
887 disk_get_eject_state,
888 disk_get_image_index,
889 disk_set_image_index,
890 disk_get_num_images,
891 disk_replace_image_index,
892 disk_add_image_index,
893};
894
895static void disk_tray_open(void)
896{
897 if (log_cb)
898 log_cb(RETRO_LOG_INFO, "cd tray open\n");
899 disk_ejected = 1;
900}
901
902static void disk_tray_close(void)
903{
904 if (log_cb)
905 log_cb(RETRO_LOG_INFO, "cd tray close\n");
906 disk_ejected = 0;
907}
908
909
910static const char * const biosfiles_us[] = {
911 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
912};
913static const char * const biosfiles_eu[] = {
914 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
915};
916static const char * const biosfiles_jp[] = {
917 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
918};
919
920static void make_system_path(char *buf, size_t buf_size,
921 const char *name, const char *ext)
922{
923 const char *dir = NULL;
924
925 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
926 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
927 }
928 else {
929 snprintf(buf, buf_size, "%s%s", name, ext);
930 }
931}
932
933static const char *find_bios(int *region, const char *cd_fname)
934{
935 const char * const *files;
936 static char path[256];
937 int i, count;
938 FILE *f = NULL;
939
940 if (*region == 4) { // US
941 files = biosfiles_us;
942 count = sizeof(biosfiles_us) / sizeof(char *);
943 } else if (*region == 8) { // EU
944 files = biosfiles_eu;
945 count = sizeof(biosfiles_eu) / sizeof(char *);
946 } else if (*region == 1 || *region == 2) {
947 files = biosfiles_jp;
948 count = sizeof(biosfiles_jp) / sizeof(char *);
949 } else {
950 return NULL;
951 }
952
953 for (i = 0; i < count; i++)
954 {
955 make_system_path(path, sizeof(path), files[i], ".bin");
956 f = fopen(path, "rb");
957 if (f != NULL)
958 break;
959
960 make_system_path(path, sizeof(path), files[i], ".zip");
961 f = fopen(path, "rb");
962 if (f != NULL)
963 break;
964 }
965
966 if (f != NULL) {
967 if (log_cb)
968 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
969 fclose(f);
970 return path;
971 }
972
973 return NULL;
974}
975
7612bf90 976bool retro_load_game(const struct retro_game_info *info)
977{
978 enum media_type_e media_type;
979 static char carthw_path[256];
980 size_t i;
981
982 struct retro_input_descriptor desc[] = {
983 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
984 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
985 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
986 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
987 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
988 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
989 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
990 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
991 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
992 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
993 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
994 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
995
996 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
997 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
998 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
999 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1000 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
1001 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
1002 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
1003 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
1004 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
1005 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
1006 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
1007 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
1008
1009 { 0 },
1010 };
1011
1012 struct retro_input_descriptor desc_sms[] = {
1013 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1014 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1015 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1016 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1017 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1018 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1019 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1020
1021 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1022 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1023 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1024 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1025 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1026 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1027 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1028
1029 { 0 },
1030 };
1031
7612bf90 1032 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
1033 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
1034 if (log_cb)
1035 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
1036 return false;
1037 }
1038
1039 if (info == NULL || info->path == NULL) {
1040 if (log_cb)
1041 log_cb(RETRO_LOG_ERROR, "info->path required\n");
1042 return false;
1043 }
1044
1045 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
1046 if (disks[i].fname != NULL) {
1047 free(disks[i].fname);
1048 disks[i].fname = NULL;
1049 }
1050 }
1051
1052 disk_current_index = 0;
1053 disk_count = 1;
1054 disks[0].fname = strdup(info->path);
1055
1056 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
1057
1058 media_type = PicoLoadMedia(info->path, carthw_path,
1059 find_bios, NULL);
1060
1061 switch (media_type) {
1062 case PM_BAD_DETECT:
1063 if (log_cb)
1064 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
1065 return false;
1066 case PM_BAD_CD:
1067 if (log_cb)
1068 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
1069 return false;
1070 case PM_BAD_CD_NO_BIOS:
1071 if (log_cb)
1072 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
1073 return false;
1074 case PM_ERROR:
1075 if (log_cb)
1076 log_cb(RETRO_LOG_ERROR, "Load error\n");
1077 return false;
1078 default:
1079 break;
1080 }
1081
1082 if (media_type == PM_MARK3)
1083 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1084 else
1085 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1086
1087 PicoLoopPrepare();
1088
1089 PicoWriteSound = snd_write;
1090 memset(sndBuffer, 0, sizeof(sndBuffer));
1091 PsndOut = sndBuffer;
1092 PsndRerate(0);
1093
1094 return true;
1095}
1096
1097bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1098{
1099 return false;
1100}
1101
1102void retro_unload_game(void)
1103{
1104}
1105
1106unsigned retro_get_region(void)
1107{
1108 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1109}
1110
1111void *retro_get_memory_data(unsigned type)
1112{
1113 uint8_t* data;
1114
1115 switch(type)
1116 {
1117 case RETRO_MEMORY_SAVE_RAM:
93f9619e 1118 if (PicoIn.AHW & PAHW_MCD)
7612bf90 1119 data = Pico_mcd->bram;
1120 else
28a5b392 1121 data = Pico.sv.data;
7612bf90 1122 break;
1123 case RETRO_MEMORY_SYSTEM_RAM:
93f9619e 1124 if (PicoIn.AHW & PAHW_SMS)
28a5b392 1125 data = PicoMem.zram;
7612bf90 1126 else
28a5b392 1127 data = PicoMem.ram;
7612bf90 1128 break;
1129 default:
1130 data = NULL;
1131 break;
1132 }
1133
1134 return data;
1135}
1136
1137size_t retro_get_memory_size(unsigned type)
1138{
1139 unsigned int i;
1140 int sum;
1141
1142 switch(type)
1143 {
1144 case RETRO_MEMORY_SAVE_RAM:
93f9619e 1145 if (PicoIn.AHW & PAHW_MCD)
7612bf90 1146 // bram
1147 return 0x2000;
1148
1149 if (Pico.m.frame_count == 0)
28a5b392 1150 return Pico.sv.size;
7612bf90 1151
1152 // if game doesn't write to sram, don't report it to
1153 // libretro so that RA doesn't write out zeroed .srm
28a5b392 1154 for (i = 0, sum = 0; i < Pico.sv.size; i++)
1155 sum |= Pico.sv.data[i];
7612bf90 1156
28a5b392 1157 return (sum != 0) ? Pico.sv.size : 0;
7612bf90 1158
1159 case RETRO_MEMORY_SYSTEM_RAM:
93f9619e 1160 if (PicoIn.AHW & PAHW_SMS)
7612bf90 1161 return 0x2000;
1162 else
28a5b392 1163 return sizeof(PicoMem.ram);
7612bf90 1164
1165 default:
1166 return 0;
1167 }
1168
1169}
1170
1171void retro_reset(void)
1172{
1173 PicoReset();
1174}
1175
1176static const unsigned short retro_pico_map[] = {
1177 1 << GBTN_B,
1178 1 << GBTN_A,
1179 1 << GBTN_MODE,
1180 1 << GBTN_START,
1181 1 << GBTN_UP,
1182 1 << GBTN_DOWN,
1183 1 << GBTN_LEFT,
1184 1 << GBTN_RIGHT,
1185 1 << GBTN_C,
1186 1 << GBTN_Y,
1187 1 << GBTN_X,
1188 1 << GBTN_Z,
1189};
1190#define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1191
1192static void snd_write(int len)
1193{
1194 audio_batch_cb(PsndOut, len / 4);
1195}
1196
1197static enum input_device input_name_to_val(const char *name)
1198{
1199 if (strcmp(name, "3 button pad") == 0)
1200 return PICO_INPUT_PAD_3BTN;
1201 if (strcmp(name, "6 button pad") == 0)
1202 return PICO_INPUT_PAD_6BTN;
1203 if (strcmp(name, "None") == 0)
1204 return PICO_INPUT_NOTHING;
1205
1206 if (log_cb)
1207 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1208 return PICO_INPUT_PAD_3BTN;
1209}
1210
1211static void update_variables(void)
1212{
1213 struct retro_variable var;
24aab4da 1214 int OldPicoRegionOverride;
1215 float old_user_vout_width;
7612bf90 1216
1217 var.value = NULL;
1218 var.key = "picodrive_input1";
1219 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1220 PicoSetInputDevice(0, input_name_to_val(var.value));
1221
1222 var.value = NULL;
1223 var.key = "picodrive_input2";
1224 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1225 PicoSetInputDevice(1, input_name_to_val(var.value));
1226
1227 var.value = NULL;
1228 var.key = "picodrive_sprlim";
1229 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1230 if (strcmp(var.value, "enabled") == 0)
93f9619e 1231 PicoIn.opt |= POPT_DIS_SPRITE_LIM;
7612bf90 1232 else
93f9619e 1233 PicoIn.opt &= ~POPT_DIS_SPRITE_LIM;
7612bf90 1234 }
1235
1236 var.value = NULL;
1237 var.key = "picodrive_ramcart";
1238 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1239 if (strcmp(var.value, "enabled") == 0)
93f9619e 1240 PicoIn.opt |= POPT_EN_MCD_RAMCART;
7612bf90 1241 else
93f9619e 1242 PicoIn.opt &= ~POPT_EN_MCD_RAMCART;
7612bf90 1243 }
1244
93f9619e 1245 OldPicoRegionOverride = PicoIn.regionOverride;
7612bf90 1246 var.value = NULL;
1247 var.key = "picodrive_region";
1248 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1249 if (strcmp(var.value, "Auto") == 0)
93f9619e 1250 PicoIn.regionOverride = 0;
7612bf90 1251 else if (strcmp(var.value, "Japan NTSC") == 0)
93f9619e 1252 PicoIn.regionOverride = 1;
7612bf90 1253 else if (strcmp(var.value, "Japan PAL") == 0)
93f9619e 1254 PicoIn.regionOverride = 2;
7612bf90 1255 else if (strcmp(var.value, "US") == 0)
93f9619e 1256 PicoIn.regionOverride = 4;
7612bf90 1257 else if (strcmp(var.value, "Europe") == 0)
93f9619e 1258 PicoIn.regionOverride = 8;
7612bf90 1259 }
1260
7612bf90 1261 // Update region, fps and sound flags if needed
93f9619e 1262 if (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)
7612bf90 1263 {
1264 PicoDetectRegion();
1265 PicoLoopPrepare();
1266 PsndRerate(1);
1267 }
1268
24aab4da 1269 old_user_vout_width = user_vout_width;
7612bf90 1270 var.value = NULL;
1271 var.key = "picodrive_aspect";
1272 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1273 if (strcmp(var.value, "4/3") == 0)
1274 user_vout_width = VOUT_4_3;
1275 else if (strcmp(var.value, "CRT") == 0)
1276 user_vout_width = VOUT_CRT;
1277 else
1278 user_vout_width = VOUT_PAR;
1279 }
1280
1281 var.value = NULL;
1282 var.key = "picodrive_overscan";
1283 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1284 if (strcmp(var.value, "enabled") == 0)
1285 show_overscan = true;
1286 else
1287 show_overscan = false;
1288 }
1289
1290 if (user_vout_width != old_user_vout_width)
1291 {
1292 // Update the geometry
1293 struct retro_system_av_info av_info;
1294 retro_get_system_av_info(&av_info);
1295 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1296 }
1297
1298#ifdef DRC_SH2
1299 var.value = NULL;
1300 var.key = "picodrive_drc";
1301 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1302 if (strcmp(var.value, "enabled") == 0)
93f9619e 1303 PicoIn.opt |= POPT_EN_DRC;
7612bf90 1304 else
93f9619e 1305 PicoIn.opt &= ~POPT_EN_DRC;
7612bf90 1306 }
1307#endif
1308#ifdef _3DS
1309 if(!ctr_svchack_successful)
93f9619e 1310 PicoIn.opt &= ~POPT_EN_DRC;
7612bf90 1311#endif
1312}
1313
1314void retro_run(void)
1315{
1316 bool updated = false;
1317 int pad, i;
1318
1319 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1320 update_variables();
1321
1322 input_poll_cb();
1323
93f9619e 1324 PicoIn.pad[0] = PicoIn.pad[1] = 0;
7612bf90 1325 for (pad = 0; pad < 2; pad++)
1326 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1327 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
93f9619e 1328 PicoIn.pad[pad] |= retro_pico_map[i];
7612bf90 1329
1330 PicoPatchApply();
1331 PicoFrame();
1332
1333 video_cb((short *)vout_buf + vout_offset,
1334 vout_width, vout_height, vout_width * 2);
1335}
1336
7612bf90 1337void retro_init(void)
1338{
1339 struct retro_log_callback log;
1340 int level;
1341
1342 level = 0;
1343 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1344
1345 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1346 log_cb = log.log;
1347 else
1348 log_cb = NULL;
1349
1350 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1351
1352#ifdef _3DS
1353 ctr_svchack_successful = ctr_svchack_init();
1354#elif defined(VITA)
1355 sceBlock = getVMBlock();
1356#endif
1357
93f9619e 1358 PicoIn.opt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
7612bf90 1359 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1360 | POPT_EN_32X|POPT_EN_PWM
1361 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1362#ifdef __arm__
1363#ifdef _3DS
1364 if (ctr_svchack_successful)
1365#endif
93f9619e 1366 PicoIn.opt |= POPT_EN_DRC;
7612bf90 1367#endif
1368 PsndRate = 44100;
93f9619e 1369 PicoIn.autoRgnOrder = 0x184; // US, EU, JP
7612bf90 1370
1371 vout_width = 320;
1372 vout_height = 240;
1373#ifdef _3DS
1374 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1375#else
1376 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1377#endif
1378
1379 PicoInit();
1380 PicoDrawSetOutFormat(PDF_RGB555, 0);
1381 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1382
1383 //PicoMessage = plat_status_msg_busy_next;
1384 PicoMCDopenTray = disk_tray_open;
1385 PicoMCDcloseTray = disk_tray_close;
1386
1387 update_variables();
1388}
1389
1390void retro_deinit(void)
1391{
1392#ifdef _3DS
1393 linearFree(vout_buf);
1394#else
1395 free(vout_buf);
1396#endif
1397 vout_buf = NULL;
1398 PicoExit();
1399}
df925153 1400
1401// vim:shiftwidth=3:ts=3:expandtab
fast MegaDrive/MegaCD/32X emulator