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(ctr/3ds) optimize build, add support for 32x/svp dynamic recompilers.
[picodrive.git] / platform / libretro / libretro.c
CommitLineData
2446536b 1/*
2 * libretro core glue for PicoDrive
3 * (C) notaz, 2013
4 *
5 * This work is licensed under the terms of MAME license.
6 * See COPYING file in the top-level directory.
7 */
8
9#define _GNU_SOURCE 1 // mremap
10#include <stdio.h>
11#include <stdarg.h>
12#include <string.h>
e8b61936 13#ifndef _WIN32
f18d0e08 14#ifndef NO_MMAP
2446536b 15#include <sys/mman.h>
f18d0e08 16#endif
e8b61936 17#else
6f1133bc 18#include <io.h>
e8b61936 19#include <windows.h>
6f1133bc 20#include <sys/types.h>
e8b61936 21#endif
c25d78ee 22#include <errno.h>
2446536b 23#ifdef __MACH__
24#include <libkern/OSCacheControl.h>
25#endif
26
0c732676 27#ifdef _3DS
28#include "3ds/3ds_utils.h"
29#define MEMOP_PROT 6
30int svcDuplicateHandle(unsigned int* out, unsigned int original);
31int svcCloseHandle(unsigned int handle);
32int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
33 unsigned int size, unsigned int type, unsigned int perm);
34#define MEMOP_MAP 4
35#define MEMOP_UNMAP 5
36
37static int ctr_svchack_successful = 0;
38#endif
39
2446536b 40#include <pico/pico_int.h>
86b38dc4 41#include <pico/state.h>
5345c2b9
T		 42#include "../common/input_pico.h"
43#include "../common/version.h"
2446536b 44#include "libretro.h"
45
f5d4045b 46static retro_log_printf_t log_cb;
2446536b 47static retro_video_refresh_t video_cb;
48static retro_input_poll_t input_poll_cb;
49static retro_input_state_t input_state_cb;
50static retro_environment_t environ_cb;
51static retro_audio_sample_batch_t audio_batch_cb;
52
2446536b 53#define VOUT_MAX_WIDTH 320
54#define VOUT_MAX_HEIGHT 240
55static void *vout_buf;
51c08950 56static int vout_width, vout_height, vout_offset;
2446536b 57
ed06ffd3
T		 58#ifdef _MSC_VER
59static short sndBuffer[2*44100/50];
60#else
2446536b 61static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
ed06ffd3 62#endif
2446536b 63
2446536b 64static void snd_write(int len);
65
66#ifdef _WIN32
67#define SLASH '\\'
68#else
69#define SLASH '/'
70#endif
71
72/* functions called by the core */
73
74void cache_flush_d_inval_i(void *start, void *end)
75{
76#ifdef __arm__
77#if defined(__BLACKBERRY_QNX__)
78 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
79#elif defined(__MACH__)
80 size_t len = (char *)end - (char *)start;
81 sys_dcache_flush(start, len);
82 sys_icache_invalidate(start, len);
0c732676 83#elif defined(_3DS)
84 ctr_flush_invalidate_cache();
2446536b 85#else
0c732676 86 __clear_cache(start, end);
2446536b 87#endif
88#endif
89}
90
e8b61936 91#ifdef _WIN32
6f1133bc
T		 92/* mmap() replacement for Windows
93 *
94 * Author: Mike Frysinger <vapier@gentoo.org>
95 * Placed into the public domain
96 */
97
98/* References:
99 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
100 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
101 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
102 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
103 */
104
105#define PROT_READ 0x1
106#define PROT_WRITE 0x2
107/* This flag is only available in WinXP+ */
108#ifdef FILE_MAP_EXECUTE
109#define PROT_EXEC 0x4
110#else
111#define PROT_EXEC 0x0
112#define FILE_MAP_EXECUTE 0
113#endif
114
115#define MAP_SHARED 0x01
116#define MAP_PRIVATE 0x02
117#define MAP_ANONYMOUS 0x20
118#define MAP_ANON MAP_ANONYMOUS
119#define MAP_FAILED ((void *) -1)
120
121#ifdef __USE_FILE_OFFSET64
122# define DWORD_HI(x) (x >> 32)
123# define DWORD_LO(x) ((x) & 0xffffffff)
124#else
125# define DWORD_HI(x) (0)
126# define DWORD_LO(x) (x)
127#endif
128
129static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
2446536b 130{
ed06ffd3
T		 131 uint32_t flProtect, dwDesiredAccess;
132 off_t end;
133 HANDLE mmap_fd, h;
134 void *ret;
135
6f1133bc
T		 136 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
137 return MAP_FAILED;
138 if (fd == -1) {
139 if (!(flags & MAP_ANON) || offset)
140 return MAP_FAILED;
141 } else if (flags & MAP_ANON)
142 return MAP_FAILED;
143
6f1133bc
T		 144 if (prot & PROT_WRITE) {
145 if (prot & PROT_EXEC)
146 flProtect = PAGE_EXECUTE_READWRITE;
147 else
148 flProtect = PAGE_READWRITE;
149 } else if (prot & PROT_EXEC) {
150 if (prot & PROT_READ)
151 flProtect = PAGE_EXECUTE_READ;
152 else if (prot & PROT_EXEC)
153 flProtect = PAGE_EXECUTE;
154 } else
155 flProtect = PAGE_READONLY;
156
ed06ffd3
T		 157 end = length + offset;
158
6f1133bc
T		 159 if (fd == -1)
160 mmap_fd = INVALID_HANDLE_VALUE;
161 else
162 mmap_fd = (HANDLE)_get_osfhandle(fd);
163 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
164 if (h == NULL)
165 return MAP_FAILED;
166
6f1133bc
T		 167 if (prot & PROT_WRITE)
168 dwDesiredAccess = FILE_MAP_WRITE;
169 else
170 dwDesiredAccess = FILE_MAP_READ;
171 if (prot & PROT_EXEC)
172 dwDesiredAccess |= FILE_MAP_EXECUTE;
173 if (flags & MAP_PRIVATE)
174 dwDesiredAccess |= FILE_MAP_COPY;
ed06ffd3 175 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
6f1133bc
T		 176 if (ret == NULL) {
177 CloseHandle(h);
178 ret = MAP_FAILED;
179 }
180 return ret;
e8b61936 181}
2446536b 182
6f1133bc 183static void munmap(void *addr, size_t length)
e8b61936 184{
6f1133bc
T		 185 UnmapViewOfFile(addr);
186 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
e8b61936 187}
f18d0e08 188#elif defined(NO_MMAP)
5345c2b9 189#define PROT_EXEC 0x04
f18d0e08 190#define MAP_FAILED 0
191#define PROT_READ 0
192#define PROT_WRITE 0
193#define MAP_PRIVATE 0
194#define MAP_ANONYMOUS 0
195
196void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
197{
198 return malloc(len);
199}
200
201void munmap(void *base_addr, size_t len)
202{
203 free(base_addr);
204}
205
206int mprotect(void *addr, size_t len, int prot)
207{
0c732676 208 /* stub - not really needed at this point since this codepath has no dynarecs */
f18d0e08 209 return 0;
210}
211
e8b61936 212#endif
8e5639bc 213
214#ifndef MAP_ANONYMOUS
215#define MAP_ANONYMOUS MAP_ANON
216#endif
217
0c732676 218#ifdef _3DS
219typedef struct
220{
221 unsigned int requested_map;
222 void* buffer;
223}pico_mmap_t;
224
225pico_mmap_t pico_mmaps[] = {
226 {0x02000000, 0},
227 {0x06000000, 0},
228 {NULL, 0}
229};
230
231void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
232{
233 (void)is_fixed;
234
235 if (ctr_svchack_successful)
236 {
237 pico_mmap_t* pico_mmap;
238
239 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
240 {
241 if ((pico_mmap->requested_map == addr))
242 {
243 unsigned int ptr_aligned, tmp;
244 unsigned int currentHandle;
245 unsigned int perm = 0b011;
246
247 if (need_exec)
248 perm = 0b111;
249
250 size = (size + 0xFFF) & ~0xFFF;
251 pico_mmap->buffer = malloc(size + 0x1000);
252 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
253
254 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
255
256 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
257 {
258 if (log_cb)
259 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
260 exit(1);
261 }
262
263 svcCloseHandle(currentHandle);
264 return (void*)pico_mmap->requested_map;
265 }
266 }
267 }
268
269 return malloc(size);
270}
271
272void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
273{
274 if (ctr_svchack_successful)
275 {
276 pico_mmap_t* pico_mmap;
277
278 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
279 {
280 if ((pico_mmap->requested_map == (unsigned int)ptr))
281 {
282 unsigned int ptr_aligned;
283 unsigned int currentHandle;
284 void* tmp;
285
286 oldsize = (oldsize + 0xFFF) & ~0xFFF;
287 newsize = (newsize + 0xFFF) & ~0xFFF;
288 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
289
290 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
291
292 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
293
294 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
295 if(!tmp)
296 return NULL;
297
298 pico_mmap->buffer = tmp;
299 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
300
301 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
302
303 svcCloseHandle(currentHandle);
304
305 return ptr;
306 }
307 }
308 }
309
310 return realloc(ptr, newsize);
311
312}
313void plat_munmap(void *ptr, size_t size)
314{
315 if (ctr_svchack_successful)
316 {
317 pico_mmap_t* pico_mmap;
318
319 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
320 {
321 if ((pico_mmap->requested_map == (unsigned int)ptr))
322 {
323 unsigned int ptr_aligned;
324 unsigned int currentHandle;
325
326 size = (size + 0xFFF) & ~0xFFF;
327 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
328
329 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
330
331 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
332
333 svcCloseHandle(currentHandle);
334
335 free(pico_mmap->buffer);
336 pico_mmap->buffer = NULL;
337 return;
338 }
339 }
340 }
341
342 free(ptr);
343}
344
345#else
e8b61936 346void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
347{
e8b61936 348 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
349 void *req, *ret;
350
351 req = (void *)addr;
352 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
353 if (ret == MAP_FAILED) {
f5d4045b 354 if (log_cb)
355 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
e8b61936 356 return NULL;
357 }
358
359 if (addr != 0 && ret != (void *)addr) {
f5d4045b 360 if (log_cb)
361 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
362 addr, ret);
e8b61936 363
364 if (is_fixed) {
365 munmap(ret, size);
366 return NULL;
367 }
368 }
2446536b 369
370 return ret;
371}
372
373void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
374{
8c8b7284 375#ifdef __linux__
2446536b 376 void *ret = mremap(ptr, oldsize, newsize, 0);
377 if (ret == MAP_FAILED)
378 return NULL;
379
380 return ret;
8c8b7284 381#else
382 void *tmp, *ret;
383 size_t preserve_size;
384
385 preserve_size = oldsize;
386 if (preserve_size > newsize)
387 preserve_size = newsize;
388 tmp = malloc(preserve_size);
389 if (tmp == NULL)
390 return NULL;
391 memcpy(tmp, ptr, preserve_size);
392
393 munmap(ptr, oldsize);
394 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
395 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
396 if (ret == MAP_FAILED) {
397 free(tmp);
398 return NULL;
399 }
400 memcpy(ret, tmp, preserve_size);
401 free(tmp);
402 return ret;
403#endif
2446536b 404}
405
406void plat_munmap(void *ptr, size_t size)
407{
408 if (ptr != NULL)
409 munmap(ptr, size);
410}
0c732676 411#endif
2446536b 412
c25d78ee 413int plat_mem_set_exec(void *ptr, size_t size)
414{
e8b61936 415#ifdef _WIN32
416 int ret = VirtualProtect(ptr,size,PAGE_EXECUTE_READWRITE,0);
f5d4045b 417 if (ret == 0 && log_cb)
418 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, 0);
0c732676 419#elif defined(_3DS)
420 int ret = -1;
421 if (ctr_svchack_successful)
422 {
423 unsigned int currentHandle;
424 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
425 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
426 size, MEMOP_PROT, 0b111);
427 svcCloseHandle(currentHandle);
428 ctr_flush_invalidate_cache();
429
430 }
431 else
432 {
433 if (log_cb)
434 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
435 exit(1);
436 }
437
438
e8b61936 439#else
440 int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
f5d4045b 441 if (ret != 0 && log_cb)
442 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
e8b61936 443#endif
c25d78ee 444 return ret;
445}
446
2446536b 447void emu_video_mode_change(int start_line, int line_count, int is_32cols)
448{
449 memset(vout_buf, 0, 320 * 240 * 2);
450 vout_width = is_32cols ? 256 : 320;
451 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
51c08950 452
453 vout_height = line_count;
454 vout_offset = vout_width * start_line;
2446536b 455}
456
457void emu_32x_startup(void)
458{
2446536b 459}
460
2446536b 461void lprintf(const char *fmt, ...)
462{
c681e48d 463 char buffer[256];
464 va_list ap;
465 va_start(ap, fmt);
466 vsprintf(buffer, fmt, ap);
f5d4045b 467 /* TODO - add 'level' param for warning/error messages? */
468 if (log_cb)
0c732676 469 log_cb(RETRO_LOG_INFO, "%s\n", fmt, ap);
470 va_end(ap);
2446536b 471}
472
2446536b 473/* libretro */
474void retro_set_environment(retro_environment_t cb)
475{
476 static const struct retro_variable vars[] = {
477 //{ "region", "Region; Auto|NTSC|PAL" },
531a8f38 478 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
479 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
27f190ea 480 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
481 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
b38bccea 482 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
0185b677 483#ifdef DRC_SH2
484 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
485#endif
2446536b 486 { NULL, NULL },
487 };
488
489 environ_cb = cb;
490
491 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
492}
493
494void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
495void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
496void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
497void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
498void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
499
500unsigned retro_api_version(void)
501{
502 return RETRO_API_VERSION;
503}
504
505void retro_set_controller_port_device(unsigned port, unsigned device)
506{
507}
508
509void retro_get_system_info(struct retro_system_info *info)
510{
511 memset(info, 0, sizeof(*info));
512 info->library_name = "PicoDrive";
513 info->library_version = VERSION;
53b2e51c 514 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
2446536b 515 info->need_fullpath = true;
516}
517
518void retro_get_system_av_info(struct retro_system_av_info *info)
519{
520 memset(info, 0, sizeof(*info));
521 info->timing.fps = Pico.m.pal ? 50 : 60;
522 info->timing.sample_rate = 44100;
523 info->geometry.base_width = 320;
51c08950 524 info->geometry.base_height = vout_height;
2446536b 525 info->geometry.max_width = VOUT_MAX_WIDTH;
526 info->geometry.max_height = VOUT_MAX_HEIGHT;
24a7ff72 527 info->geometry.aspect_ratio = 4.0f / 3.0f;
2446536b 528}
529
86b38dc4 530/* savestates */
531struct savestate_state {
532 const char *load_buf;
533 char *save_buf;
534 size_t size;
535 size_t pos;
536};
537
538size_t state_read(void *p, size_t size, size_t nmemb, void *file)
539{
540 struct savestate_state *state = file;
541 size_t bsize = size * nmemb;
542
543 if (state->pos + bsize > state->size) {
f5d4045b 544 if (log_cb)
545 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
546 state->pos + bsize, state->size);
86b38dc4 547 bsize = state->size - state->pos;
548 if ((int)bsize <= 0)
549 return 0;
550 }
551
552 memcpy(p, state->load_buf + state->pos, bsize);
553 state->pos += bsize;
554 return bsize;
555}
556
557size_t state_write(void *p, size_t size, size_t nmemb, void *file)
558{
559 struct savestate_state *state = file;
560 size_t bsize = size * nmemb;
561
562 if (state->pos + bsize > state->size) {
f5d4045b 563 if (log_cb)
564 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
565 state->pos + bsize, state->size);
86b38dc4 566 bsize = state->size - state->pos;
567 if ((int)bsize <= 0)
568 return 0;
569 }
570
571 memcpy(state->save_buf + state->pos, p, bsize);
572 state->pos += bsize;
573 return bsize;
574}
575
576size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
577{
578 struct savestate_state *state = file;
579 size_t bsize = size * nmemb;
580
581 state->pos += bsize;
582 return bsize;
583}
584
585size_t state_eof(void *file)
586{
587 struct savestate_state *state = file;
588
589 return state->pos >= state->size;
590}
591
592int state_fseek(void *file, long offset, int whence)
593{
594 struct savestate_state *state = file;
595
596 switch (whence) {
597 case SEEK_SET:
598 state->pos = offset;
599 break;
600 case SEEK_CUR:
601 state->pos += offset;
602 break;
603 case SEEK_END:
604 state->pos = state->size + offset;
605 break;
606 }
607 return (int)state->pos;
608}
609
610/* savestate sizes vary wildly depending if cd/32x or
611 * carthw is active, so run the whole thing to get size */
2446536b 612size_t retro_serialize_size(void)
613{
86b38dc4 614 struct savestate_state state = { 0, };
615 int ret;
616
617 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
618 if (ret != 0)
619 return 0;
620
621 return state.pos;
2446536b 622}
623
624bool retro_serialize(void *data, size_t size)
625{
86b38dc4 626 struct savestate_state state = { 0, };
627 int ret;
628
629 state.save_buf = data;
630 state.size = size;
631 state.pos = 0;
632
633 ret = PicoStateFP(&state, 1, NULL, state_write,
634 NULL, state_fseek);
635 return ret == 0;
2446536b 636}
637
638bool retro_unserialize(const void *data, size_t size)
639{
86b38dc4 640 struct savestate_state state = { 0, };
641 int ret;
642
643 state.load_buf = data;
644 state.size = size;
645 state.pos = 0;
646
647 ret = PicoStateFP(&state, 0, state_read, NULL,
648 state_eof, state_fseek);
649 return ret == 0;
2446536b 650}
651
652/* cheats - TODO */
653void retro_cheat_reset(void)
654{
655}
656
657void retro_cheat_set(unsigned index, bool enabled, const char *code)
658{
659}
660
661/* multidisk support */
662static bool disk_ejected;
663static unsigned int disk_current_index;
664static unsigned int disk_count;
665static struct disks_state {
666 char *fname;
667} disks[8];
668
669static bool disk_set_eject_state(bool ejected)
670{
671 // TODO?
672 disk_ejected = ejected;
673 return true;
674}
675
676static bool disk_get_eject_state(void)
677{
678 return disk_ejected;
679}
680
681static unsigned int disk_get_image_index(void)
682{
683 return disk_current_index;
684}
685
686static bool disk_set_image_index(unsigned int index)
687{
274fcc35 688 enum cd_img_type cd_type;
2446536b 689 int ret;
690
691 if (index >= sizeof(disks) / sizeof(disks[0]))
692 return false;
693
694 if (disks[index].fname == NULL) {
f5d4045b 695 if (log_cb)
696 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
2446536b 697
698 // RetroArch specifies "no disk" with index == count,
699 // so don't fail here..
700 disk_current_index = index;
701 return true;
702 }
703
f5d4045b 704 if (log_cb)
705 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
706 disks[index].fname);
2446536b 707
708 ret = -1;
709 cd_type = PicoCdCheck(disks[index].fname, NULL);
710 if (cd_type != CIT_NOT_CD)
274fcc35 711 ret = cdd_load(disks[index].fname, cd_type);
2446536b 712 if (ret != 0) {
f5d4045b 713 if (log_cb)
714 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
2446536b 715 return 0;
716 }
717
718 disk_current_index = index;
719 return true;
720}
721
722static unsigned int disk_get_num_images(void)
723{
724 return disk_count;
725}
726
727static bool disk_replace_image_index(unsigned index,
728 const struct retro_game_info *info)
729{
730 bool ret = true;
731
732 if (index >= sizeof(disks) / sizeof(disks[0]))
733 return false;
734
735 if (disks[index].fname != NULL)
736 free(disks[index].fname);
737 disks[index].fname = NULL;
738
739 if (info != NULL) {
740 disks[index].fname = strdup(info->path);
741 if (index == disk_current_index)
742 ret = disk_set_image_index(index);
743 }
744
745 return ret;
746}
747
748static bool disk_add_image_index(void)
749{
750 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
751 return false;
752
753 disk_count++;
754 return true;
755}
756
757static struct retro_disk_control_callback disk_control = {
ed06ffd3
T		 758 disk_set_eject_state,
759 disk_get_eject_state,
760 disk_get_image_index,
761 disk_set_image_index,
762 disk_get_num_images,
763 disk_replace_image_index,
764 disk_add_image_index,
2446536b 765};
766
767static void disk_tray_open(void)
768{
f5d4045b 769 if (log_cb)
770 log_cb(RETRO_LOG_INFO, "cd tray open\n");
2446536b 771 disk_ejected = 1;
772}
773
774static void disk_tray_close(void)
775{
f5d4045b 776 if (log_cb)
777 log_cb(RETRO_LOG_INFO, "cd tray close\n");
2446536b 778 disk_ejected = 0;
779}
780
781
782static const char * const biosfiles_us[] = {
b08a2950 783 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
2446536b 784};
785static const char * const biosfiles_eu[] = {
b08a2950 786 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
2446536b 787};
788static const char * const biosfiles_jp[] = {
b08a2950 789 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
2446536b 790};
791
792static void make_system_path(char *buf, size_t buf_size,
793 const char *name, const char *ext)
794{
795 const char *dir = NULL;
796
797 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
798 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
799 }
800 else {
801 snprintf(buf, buf_size, "%s%s", name, ext);
802 }
803}
804
805static const char *find_bios(int *region, const char *cd_fname)
806{
807 const char * const *files;
808 static char path[256];
809 int i, count;
810 FILE *f = NULL;
811
812 if (*region == 4) { // US
813 files = biosfiles_us;
814 count = sizeof(biosfiles_us) / sizeof(char *);
815 } else if (*region == 8) { // EU
816 files = biosfiles_eu;
817 count = sizeof(biosfiles_eu) / sizeof(char *);
818 } else if (*region == 1 || *region == 2) {
819 files = biosfiles_jp;
820 count = sizeof(biosfiles_jp) / sizeof(char *);
821 } else {
822 return NULL;
823 }
824
825 for (i = 0; i < count; i++)
826 {
827 make_system_path(path, sizeof(path), files[i], ".bin");
828 f = fopen(path, "rb");
829 if (f != NULL)
830 break;
831
832 make_system_path(path, sizeof(path), files[i], ".zip");
833 f = fopen(path, "rb");
834 if (f != NULL)
835 break;
836 }
837
838 if (f != NULL) {
f5d4045b 839 if (log_cb)
840 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
2446536b 841 fclose(f);
842 return path;
843 }
844
845 return NULL;
846}
847
848bool retro_load_game(const struct retro_game_info *info)
849{
850 enum media_type_e media_type;
851 static char carthw_path[256];
852 size_t i;
853
a1f2e1b1 854 struct retro_input_descriptor desc[] = {
855 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
856 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
857 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
858 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
859 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
860 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
861 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
862 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
863 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
864 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
865 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" },
866 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
867
868 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
869 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
870 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
871 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
872 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
873 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
874 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
875 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
876 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
877 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
878 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" },
879 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
880
881 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
882 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
883 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
884 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
885 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
886 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
887 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
888 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
889 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
890 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
891 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" },
892 { 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
893
894 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
895 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
896 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
897 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
898 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
899 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
900 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
901 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
902 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
903 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
904 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" },
905 { 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
906
907 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
908 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
909 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
910 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
911 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
912 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
913 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
914 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
915 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
916 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
917 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" },
918 { 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
919
920 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
921 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
922 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
923 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
924 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
925 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
926 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
927 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
928 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
929 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
930 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" },
931 { 5, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
932
933 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
934 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
935 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
936 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
937 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
938 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
939 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
940 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
941 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
942 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
943 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" },
944 { 6, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
945
946 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
947 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
948 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
949 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
950 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
951 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
952 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
953 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
954 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
955 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
956 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Mode" },
957 { 7, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
958
959 { 0 },
960 };
961
962 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
963
2446536b 964 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
965 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
f5d4045b 966 if (log_cb)
967 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
2446536b 968 return false;
969 }
970
971 if (info == NULL || info->path == NULL) {
f5d4045b 972 if (log_cb)
973 log_cb(RETRO_LOG_ERROR, "info->path required\n");
2446536b 974 return false;
975 }
976
977 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
978 if (disks[i].fname != NULL) {
979 free(disks[i].fname);
980 disks[i].fname = NULL;
981 }
982 }
983
984 disk_current_index = 0;
985 disk_count = 1;
986 disks[0].fname = strdup(info->path);
987
988 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
989
990 media_type = PicoLoadMedia(info->path, carthw_path,
991 find_bios, NULL);
992
993 switch (media_type) {
994 case PM_BAD_DETECT:
f5d4045b 995 if (log_cb)
996 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
2446536b 997 return false;
998 case PM_BAD_CD:
f5d4045b 999 if (log_cb)
1000 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
2446536b 1001 return false;
1002 case PM_BAD_CD_NO_BIOS:
f5d4045b 1003 if (log_cb)
1004 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
2446536b 1005 return false;
1006 case PM_ERROR:
f5d4045b 1007 if (log_cb)
1008 log_cb(RETRO_LOG_ERROR, "Load error\n");
2446536b 1009 return false;
1010 default:
1011 break;
1012 }
1013
1014 PicoLoopPrepare();
1015
1016 PicoWriteSound = snd_write;
1017 memset(sndBuffer, 0, sizeof(sndBuffer));
1018 PsndOut = sndBuffer;
27f190ea 1019 PsndRerate(0);
2446536b 1020
1021 return true;
1022}
1023
1024bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1025{
1026 return false;
1027}
1028
1029void retro_unload_game(void)
1030{
1031}
1032
1033unsigned retro_get_region(void)
1034{
1035 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1036}
1037
1038void *retro_get_memory_data(unsigned id)
1039{
1040 if (id != RETRO_MEMORY_SAVE_RAM)
1041 return NULL;
1042
1043 if (PicoAHW & PAHW_MCD)
1044 return Pico_mcd->bram;
1045 else
1046 return SRam.data;
1047}
1048
1049size_t retro_get_memory_size(unsigned id)
1050{
0fd6751d 1051 unsigned int i;
1052 int sum;
1053
2446536b 1054 if (id != RETRO_MEMORY_SAVE_RAM)
1055 return 0;
1056
1057 if (PicoAHW & PAHW_MCD)
1058 // bram
1059 return 0x2000;
0fd6751d 1060
1061 if (Pico.m.frame_count == 0)
2446536b 1062 return SRam.size;
0fd6751d 1063
1064 // if game doesn't write to sram, don't report it to
1065 // libretro so that RA doesn't write out zeroed .srm
1066 for (i = 0, sum = 0; i < SRam.size; i++)
1067 sum |= SRam.data[i];
1068
1069 return (sum != 0) ? SRam.size : 0;
2446536b 1070}
1071
1072void retro_reset(void)
1073{
1074 PicoReset();
1075}
1076
1077static const unsigned short retro_pico_map[] = {
ed06ffd3
T		 1078 1 << GBTN_B,
1079 1 << GBTN_A,
1080 1 << GBTN_MODE,
1081 1 << GBTN_START,
1082 1 << GBTN_UP,
1083 1 << GBTN_DOWN,
1084 1 << GBTN_LEFT,
1085 1 << GBTN_RIGHT,
1086 1 << GBTN_C,
1087 1 << GBTN_Y,
1088 1 << GBTN_X,
1089 1 << GBTN_Z,
2446536b 1090};
1091#define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1092
1093static void snd_write(int len)
1094{
1095 audio_batch_cb(PsndOut, len / 4);
1096}
1097
531a8f38 1098static enum input_device input_name_to_val(const char *name)
1099{
1100 if (strcmp(name, "3 button pad") == 0)
1101 return PICO_INPUT_PAD_3BTN;
1102 if (strcmp(name, "6 button pad") == 0)
1103 return PICO_INPUT_PAD_6BTN;
1104 if (strcmp(name, "None") == 0)
1105 return PICO_INPUT_NOTHING;
1106
f5d4045b 1107 if (log_cb)
1108 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
531a8f38 1109 return PICO_INPUT_PAD_3BTN;
1110}
1111
1112static void update_variables(void)
1113{
1114 struct retro_variable var;
1115
1116 var.value = NULL;
1117 var.key = "picodrive_input1";
1118 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1119 PicoSetInputDevice(0, input_name_to_val(var.value));
1120
1121 var.value = NULL;
1122 var.key = "picodrive_input2";
1123 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1124 PicoSetInputDevice(1, input_name_to_val(var.value));
0185b677 1125
27f190ea 1126 var.value = NULL;
1127 var.key = "picodrive_sprlim";
1128 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1129 if (strcmp(var.value, "enabled") == 0)
1130 PicoOpt |= POPT_DIS_SPRITE_LIM;
1131 else
1132 PicoOpt &= ~POPT_DIS_SPRITE_LIM;
1133 }
1134
1135 var.value = NULL;
1136 var.key = "picodrive_ramcart";
1137 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1138 if (strcmp(var.value, "enabled") == 0)
1139 PicoOpt |= POPT_EN_MCD_RAMCART;
1140 else
1141 PicoOpt &= ~POPT_EN_MCD_RAMCART;
1142 }
1143
b38bccea
O		 1144 var.value = NULL;
1145 var.key = "picodrive_region";
1146 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1147 if (strcmp(var.value, "Auto") == 0)
1148 PicoRegionOverride = 0;
1149 else if (strcmp(var.value, "Japan NTSC") == 0)
1150 PicoRegionOverride = 1;
1151 else if (strcmp(var.value, "Japan PAL") == 0)
1152 PicoRegionOverride = 2;
1153 else if (strcmp(var.value, "US") == 0)
1154 PicoRegionOverride = 4;
1155 else if (strcmp(var.value, "Europe") == 0)
1156 PicoRegionOverride = 8;
1157 }
1158
0185b677 1159#ifdef DRC_SH2
1160 var.value = NULL;
1161 var.key = "picodrive_drc";
1162 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1163 if (strcmp(var.value, "enabled") == 0)
1164 PicoOpt |= POPT_EN_DRC;
1165 else
1166 PicoOpt &= ~POPT_EN_DRC;
1167 }
1168#endif
0c732676 1169#ifdef _3DS
1170 if(!ctr_svchack_successful)
1171 PicoOpt &= ~POPT_EN_DRC;
1172#endif
531a8f38 1173}
1174
2446536b 1175void retro_run(void)
1176{
1177 bool updated = false;
1178 int pad, i;
1179
1180 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
531a8f38 1181 update_variables();
2446536b 1182
0c732676 1183 input_poll_cb();
2446536b 1184
1185 PicoPad[0] = PicoPad[1] = 0;
1186 for (pad = 0; pad < 2; pad++)
1187 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1188 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
1189 PicoPad[pad] |= retro_pico_map[i];
1190
1191 PicoFrame();
1192
51c08950 1193 video_cb((short *)vout_buf + vout_offset,
1194 vout_width, vout_height, vout_width * 2);
2446536b 1195}
1196
2f832b7f 1197static void check_system_specs(void)
1198{
1199 /* TODO - set different performance level for 32X - 6 for ARM dynarec, higher for interpreter core */
1200 unsigned level = 5;
1201 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1202}
1203
2446536b 1204void retro_init(void)
1205{
f5d4045b 1206 struct retro_log_callback log;
2446536b 1207 int level;
1208
2446536b 1209 level = 0;
1210 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1211
c681e48d 1212 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
f5d4045b 1213 log_cb = log.log;
c681e48d 1214 else
1215 log_cb = NULL;
f5d4045b 1216
2446536b 1217 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1218
0c732676 1219#ifdef _3DS
1220 ctr_svchack_successful = ctr_svchack_init();
1221#endif
1222
2446536b 1223 PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
720bfc5d 1224 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1225 | POPT_EN_32X|POPT_EN_PWM
1226 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1227#ifdef __arm__
0c732676 1228#ifdef _3DS
1229 if (ctr_svchack_successful)
1230#endif
1231 PicoOpt |= POPT_EN_DRC;
720bfc5d 1232#endif
2446536b 1233 PsndRate = 44100;
1234 PicoAutoRgnOrder = 0x184; // US, EU, JP
2446536b 1235
2446536b 1236 vout_width = 320;
0c732676 1237 vout_height = 240;
1238 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
2446536b 1239
0c732676 1240 PicoInit();
1241 PicoDrawSetOutFormat(PDF_RGB555, 0);
1242 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
2446536b 1243
1244 //PicoMessage = plat_status_msg_busy_next;
1245 PicoMCDopenTray = disk_tray_open;
1246 PicoMCDcloseTray = disk_tray_close;
531a8f38 1247
0c732676 1248 update_variables();
2446536b 1249}
1250
1251void retro_deinit(void)
1252{
1253 PicoExit();
1254}
fast MegaDrive/MegaCD/32X emulator