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add 68k overclocking support
[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>
35f2b65e 13#include <stdlib.h>
7612bf90 14#include <stdarg.h>
15#include <string.h>
16#ifndef _WIN32
17#ifndef NO_MMAP
18#include <sys/mman.h>
19#endif
20#else
21#include <io.h>
22#include <windows.h>
23#include <sys/types.h>
24#endif
25#include <errno.h>
26#ifdef __MACH__
27#include <libkern/OSCacheControl.h>
28#endif
29
30#ifdef _3DS
31#include "3ds/3ds_utils.h"
32#define MEMOP_MAP 4
33#define MEMOP_UNMAP 5
34#define MEMOP_PROT 6
35
36int svcDuplicateHandle(unsigned int* out, unsigned int original);
37int svcCloseHandle(unsigned int handle);
38int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
39 unsigned int size, unsigned int type, unsigned int perm);
40void* linearMemAlign(size_t size, size_t alignment);
41void linearFree(void* mem);
42
43static int ctr_svchack_successful = 0;
44
45#elif defined(VITA)
46#define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
47
48#include <psp2/kernel/sysmem.h>
49static int sceBlock;
50int getVMBlock();
51int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
52
53#endif
54
55#include <pico/pico_int.h>
56#include <pico/state.h>
57#include <pico/patch.h>
58#include "../common/input_pico.h"
59#include "../common/version.h"
60#include "libretro.h"
61
62static retro_log_printf_t log_cb;
63static retro_video_refresh_t video_cb;
64static retro_input_poll_t input_poll_cb;
65static retro_input_state_t input_state_cb;
66static retro_environment_t environ_cb;
67static retro_audio_sample_batch_t audio_batch_cb;
68
69#define VOUT_MAX_WIDTH 320
70#define VOUT_MAX_HEIGHT 240
71
72static const float VOUT_PAR = 0.0;
73static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
74static const float VOUT_CRT = (224.0f * 1.29911f);
75
76bool show_overscan = false;
77
78static void *vout_buf;
79static int vout_width, vout_height, vout_offset;
80static float user_vout_width = 0.0;
81
82#ifdef _MSC_VER
83static short sndBuffer[2*44100/50];
84#else
85static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
86#endif
87
88static void snd_write(int len);
89
90#ifdef _WIN32
91#define SLASH '\\'
92#else
93#define SLASH '/'
94#endif
95
96/* functions called by the core */
97
98void cache_flush_d_inval_i(void *start, void *end)
99{
100#ifdef __arm__
101 size_t len = (char *)end - (char *)start;
df925153 102 (void)len;
7612bf90 103#if defined(__BLACKBERRY_QNX__)
104 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
105#elif defined(__MACH__)
106 sys_dcache_flush(start, len);
107 sys_icache_invalidate(start, len);
108#elif defined(_3DS)
109 ctr_flush_invalidate_cache();
110#elif defined(VITA)
111 sceKernelSyncVMDomain(sceBlock, start, len);
112#else
113 __clear_cache(start, end);
114#endif
115#endif
116}
117
118#ifdef _WIN32
119/* mmap() replacement for Windows
120 *
121 * Author: Mike Frysinger <vapier@gentoo.org>
122 * Placed into the public domain
123 */
124
125/* References:
126 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
127 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
128 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
129 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
130 */
131
132#define PROT_READ 0x1
133#define PROT_WRITE 0x2
134/* This flag is only available in WinXP+ */
135#ifdef FILE_MAP_EXECUTE
136#define PROT_EXEC 0x4
137#else
138#define PROT_EXEC 0x0
139#define FILE_MAP_EXECUTE 0
140#endif
141
142#define MAP_SHARED 0x01
143#define MAP_PRIVATE 0x02
144#define MAP_ANONYMOUS 0x20
145#define MAP_ANON MAP_ANONYMOUS
146#define MAP_FAILED ((void *) -1)
147
148#ifdef __USE_FILE_OFFSET64
149# define DWORD_HI(x) (x >> 32)
150# define DWORD_LO(x) ((x) & 0xffffffff)
151#else
152# define DWORD_HI(x) (0)
153# define DWORD_LO(x) (x)
154#endif
155
156static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
157{
158 uint32_t flProtect, dwDesiredAccess;
159 off_t end;
160 HANDLE mmap_fd, h;
161 void *ret;
162
163 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
164 return MAP_FAILED;
165 if (fd == -1) {
166 if (!(flags & MAP_ANON) || offset)
167 return MAP_FAILED;
168 } else if (flags & MAP_ANON)
169 return MAP_FAILED;
170
171 if (prot & PROT_WRITE) {
172 if (prot & PROT_EXEC)
173 flProtect = PAGE_EXECUTE_READWRITE;
174 else
175 flProtect = PAGE_READWRITE;
176 } else if (prot & PROT_EXEC) {
177 if (prot & PROT_READ)
178 flProtect = PAGE_EXECUTE_READ;
179 else if (prot & PROT_EXEC)
180 flProtect = PAGE_EXECUTE;
181 } else
182 flProtect = PAGE_READONLY;
183
184 end = length + offset;
185
186 if (fd == -1)
187 mmap_fd = INVALID_HANDLE_VALUE;
188 else
189 mmap_fd = (HANDLE)_get_osfhandle(fd);
190 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
191 if (h == NULL)
192 return MAP_FAILED;
193
194 if (prot & PROT_WRITE)
195 dwDesiredAccess = FILE_MAP_WRITE;
196 else
197 dwDesiredAccess = FILE_MAP_READ;
198 if (prot & PROT_EXEC)
199 dwDesiredAccess |= FILE_MAP_EXECUTE;
200 if (flags & MAP_PRIVATE)
201 dwDesiredAccess |= FILE_MAP_COPY;
202 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
203 if (ret == NULL) {
204 CloseHandle(h);
205 ret = MAP_FAILED;
206 }
207 return ret;
208}
209
210static void munmap(void *addr, size_t length)
211{
212 UnmapViewOfFile(addr);
213 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
214}
215#elif defined(NO_MMAP)
216#define PROT_EXEC 0x04
217#define MAP_FAILED 0
218#define PROT_READ 0
219#define PROT_WRITE 0
220#define MAP_PRIVATE 0
221#define MAP_ANONYMOUS 0
222
223void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
224{
225 return malloc(len);
226}
227
228void munmap(void *base_addr, size_t len)
229{
230 free(base_addr);
231}
232
233int mprotect(void *addr, size_t len, int prot)
234{
235 /* stub - not really needed at this point since this codepath has no dynarecs */
236 return 0;
237}
238
239#endif
240
241#ifndef MAP_ANONYMOUS
242#define MAP_ANONYMOUS MAP_ANON
243#endif
244
245#ifdef _3DS
246typedef struct
247{
248 unsigned int requested_map;
249 void* buffer;
250}pico_mmap_t;
251
252pico_mmap_t pico_mmaps[] = {
253 {0x02000000, 0},
254 {0x06000000, 0},
255 {NULL, 0}
256};
257
258void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
259{
260 (void)is_fixed;
261
262 if (ctr_svchack_successful)
263 {
264 pico_mmap_t* pico_mmap;
265
266 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
267 {
268 if ((pico_mmap->requested_map == addr))
269 {
270 unsigned int ptr_aligned, tmp;
271 unsigned int currentHandle;
272 unsigned int perm = 0b011;
273
274 if (need_exec)
275 perm = 0b111;
276
277 size = (size + 0xFFF) & ~0xFFF;
278 pico_mmap->buffer = malloc(size + 0x1000);
279 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
280
281 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
282
283 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
284 {
285 if (log_cb)
286 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
287 exit(1);
288 }
289
290 svcCloseHandle(currentHandle);
291 return (void*)pico_mmap->requested_map;
292 }
293 }
294 }
295
296 return malloc(size);
297}
298
299void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
300{
301 if (ctr_svchack_successful)
302 {
303 pico_mmap_t* pico_mmap;
304
305 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
306 {
307 if ((pico_mmap->requested_map == (unsigned int)ptr))
308 {
309 unsigned int ptr_aligned;
310 unsigned int currentHandle;
311 void* tmp;
312
313 oldsize = (oldsize + 0xFFF) & ~0xFFF;
314 newsize = (newsize + 0xFFF) & ~0xFFF;
315 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
316
317 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
318
319 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
320
321 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
322 if(!tmp)
323 return NULL;
324
325 pico_mmap->buffer = tmp;
326 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
327
328 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
329
330 svcCloseHandle(currentHandle);
331
332 return ptr;
333 }
334 }
335 }
336
337 return realloc(ptr, newsize);
338
339}
340void plat_munmap(void *ptr, size_t size)
341{
342 if (ctr_svchack_successful)
343 {
344 pico_mmap_t* pico_mmap;
345
346 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
347 {
348 if ((pico_mmap->requested_map == (unsigned int)ptr))
349 {
350 unsigned int ptr_aligned;
351 unsigned int currentHandle;
352
353 size = (size + 0xFFF) & ~0xFFF;
354 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
355
356 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
357
358 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
359
360 svcCloseHandle(currentHandle);
361
362 free(pico_mmap->buffer);
363 pico_mmap->buffer = NULL;
364 return;
365 }
366 }
367 }
368
369 free(ptr);
370}
371
372#else
373void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
374{
375 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
376 void *req, *ret;
377
378 req = (void *)addr;
379 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
380 if (ret == MAP_FAILED) {
381 if (log_cb)
382 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
383 return NULL;
384 }
385
386 if (addr != 0 && ret != (void *)addr) {
387 if (log_cb)
388 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
389 addr, ret);
390
391 if (is_fixed) {
392 munmap(ret, size);
393 return NULL;
394 }
395 }
396
397 return ret;
398}
399
400void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
401{
402#ifdef __linux__
403 void *ret = mremap(ptr, oldsize, newsize, 0);
404 if (ret == MAP_FAILED)
405 return NULL;
406
407 return ret;
408#else
409 void *tmp, *ret;
410 size_t preserve_size;
411
412 preserve_size = oldsize;
413 if (preserve_size > newsize)
414 preserve_size = newsize;
415 tmp = malloc(preserve_size);
416 if (tmp == NULL)
417 return NULL;
418 memcpy(tmp, ptr, preserve_size);
419
420 munmap(ptr, oldsize);
421 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
422 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
423 if (ret == MAP_FAILED) {
424 free(tmp);
425 return NULL;
426 }
427 memcpy(ret, tmp, preserve_size);
428 free(tmp);
429 return ret;
430#endif
431}
432
433void plat_munmap(void *ptr, size_t size)
434{
435 if (ptr != NULL)
436 munmap(ptr, size);
437}
438#endif
439
df925153 440// if NULL is returned, static buffer is used
441void *plat_mem_get_for_drc(size_t size)
442{
443 void *mem = NULL;
444#ifdef VITA
445 sceKernelGetMemBlockBase(sceBlock, &mem);
446#endif
447 return mem;
448}
449
7612bf90 450int plat_mem_set_exec(void *ptr, size_t size)
451{
df925153 452 int ret = -1;
7612bf90 453#ifdef _WIN32
df925153 454 ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, 0);
7612bf90 455 if (ret == 0 && log_cb)
df925153 456 log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size,
457 GetLastError());
7612bf90 458#elif defined(_3DS)
7612bf90 459 if (ctr_svchack_successful)
460 {
461 unsigned int currentHandle;
462 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
463 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
464 size, MEMOP_PROT, 0b111);
465 svcCloseHandle(currentHandle);
466 ctr_flush_invalidate_cache();
467
468 }
469 else
470 {
471 if (log_cb)
472 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
473 exit(1);
474 }
475
476#elif defined(VITA)
df925153 477 ret = sceKernelOpenVMDomain();
7612bf90 478#else
df925153 479 ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
7612bf90 480 if (ret != 0 && log_cb)
481 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
482#endif
483 return ret;
484}
485
486void emu_video_mode_change(int start_line, int line_count, int is_32cols)
487{
24aab4da 488 struct retro_system_av_info av_info;
489
7612bf90 490 memset(vout_buf, 0, 320 * 240 * 2);
491 vout_width = is_32cols ? 256 : 320;
492 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
493 if (show_overscan == true) line_count += 16;
494 if (show_overscan == true) start_line -= 8;
495
496 vout_height = line_count;
497 vout_offset = vout_width * start_line;
498
499 // Update the geometry
7612bf90 500 retro_get_system_av_info(&av_info);
501 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
502}
503
504void emu_32x_startup(void)
505{
506}
507
508void lprintf(const char *fmt, ...)
509{
510 char buffer[256];
511 va_list ap;
512 va_start(ap, fmt);
513 vsprintf(buffer, fmt, ap);
514 /* TODO - add 'level' param for warning/error messages? */
515 if (log_cb)
516 log_cb(RETRO_LOG_INFO, "%s", buffer);
517 va_end(ap);
518}
519
520/* libretro */
521void retro_set_environment(retro_environment_t cb)
522{
523 static const struct retro_variable vars[] = {
524 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
525 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
526 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
527 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
528 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
7612bf90 529 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
530 { "picodrive_overscan", "Show Overscan; disabled|enabled" },
35f2b65e 531 { "picodrive_overclk68k", "68k overclock; disabled|+25%|+50%|+75%|+100%|+200%|+400%" },
7612bf90 532#ifdef DRC_SH2
533 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
534#endif
535 { NULL, NULL },
536 };
537
538 environ_cb = cb;
539
540 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
541}
542
543void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
544void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
545void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
546void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
547void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
548
549unsigned retro_api_version(void)
550{
551 return RETRO_API_VERSION;
552}
553
554void retro_set_controller_port_device(unsigned port, unsigned device)
555{
556}
557
558void retro_get_system_info(struct retro_system_info *info)
559{
560 memset(info, 0, sizeof(*info));
561 info->library_name = "PicoDrive";
562#ifndef GIT_VERSION
563#define GIT_VERSION ""
564#endif
565 info->library_version = VERSION GIT_VERSION;
566 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
567 info->need_fullpath = true;
568}
569
570void retro_get_system_av_info(struct retro_system_av_info *info)
571{
24aab4da 572 float common_width;
573
7612bf90 574 memset(info, 0, sizeof(*info));
575 info->timing.fps = Pico.m.pal ? 50 : 60;
576 info->timing.sample_rate = 44100;
577 info->geometry.base_width = vout_width;
578 info->geometry.base_height = vout_height;
579 info->geometry.max_width = vout_width;
580 info->geometry.max_height = vout_height;
581
24aab4da 582 common_width = vout_width;
7612bf90 583 if (user_vout_width != 0)
584 common_width = user_vout_width;
585
586 info->geometry.aspect_ratio = common_width / vout_height;
587}
588
589/* savestates */
590struct savestate_state {
591 const char *load_buf;
592 char *save_buf;
593 size_t size;
594 size_t pos;
595};
596
597size_t state_read(void *p, size_t size, size_t nmemb, void *file)
598{
599 struct savestate_state *state = file;
600 size_t bsize = size * nmemb;
601
602 if (state->pos + bsize > state->size) {
603 if (log_cb)
604 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
605 state->pos + bsize, state->size);
606 bsize = state->size - state->pos;
607 if ((int)bsize <= 0)
608 return 0;
609 }
610
611 memcpy(p, state->load_buf + state->pos, bsize);
612 state->pos += bsize;
613 return bsize;
614}
615
616size_t state_write(void *p, size_t size, size_t nmemb, void *file)
617{
618 struct savestate_state *state = file;
619 size_t bsize = size * nmemb;
620
621 if (state->pos + bsize > state->size) {
622 if (log_cb)
623 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
624 state->pos + bsize, state->size);
625 bsize = state->size - state->pos;
626 if ((int)bsize <= 0)
627 return 0;
628 }
629
630 memcpy(state->save_buf + state->pos, p, bsize);
631 state->pos += bsize;
632 return bsize;
633}
634
635size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
636{
637 struct savestate_state *state = file;
638 size_t bsize = size * nmemb;
639
640 state->pos += bsize;
641 return bsize;
642}
643
644size_t state_eof(void *file)
645{
646 struct savestate_state *state = file;
647
648 return state->pos >= state->size;
649}
650
651int state_fseek(void *file, long offset, int whence)
652{
653 struct savestate_state *state = file;
654
655 switch (whence) {
656 case SEEK_SET:
657 state->pos = offset;
658 break;
659 case SEEK_CUR:
660 state->pos += offset;
661 break;
662 case SEEK_END:
663 state->pos = state->size + offset;
664 break;
665 }
666 return (int)state->pos;
667}
668
669/* savestate sizes vary wildly depending if cd/32x or
670 * carthw is active, so run the whole thing to get size */
671size_t retro_serialize_size(void)
672{
673 struct savestate_state state = { 0, };
674 int ret;
675
676 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
677 if (ret != 0)
678 return 0;
679
680 return state.pos;
681}
682
683bool retro_serialize(void *data, size_t size)
684{
685 struct savestate_state state = { 0, };
686 int ret;
687
688 state.save_buf = data;
689 state.size = size;
690 state.pos = 0;
691
692 ret = PicoStateFP(&state, 1, NULL, state_write,
693 NULL, state_fseek);
694 return ret == 0;
695}
696
697bool retro_unserialize(const void *data, size_t size)
698{
699 struct savestate_state state = { 0, };
700 int ret;
701
702 state.load_buf = data;
703 state.size = size;
704 state.pos = 0;
705
706 ret = PicoStateFP(&state, 0, state_read, NULL,
707 state_eof, state_fseek);
708 return ret == 0;
709}
710
711typedef struct patch
712{
713 unsigned int addr;
714 unsigned short data;
715 unsigned char comp;
716} patch;
717
718extern void decode(char *buff, patch *dest);
719extern uint16_t m68k_read16(uint32_t a);
720extern void m68k_write16(uint32_t a, uint16_t d);
721
722void retro_cheat_reset(void)
723{
724 int i=0;
725 unsigned int addr;
726
727 for (i = 0; i < PicoPatchCount; i++)
728 {
729 addr = PicoPatches[i].addr;
730 if (addr < Pico.romsize) {
731 if (PicoPatches[i].active)
732 *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
733 } else {
734 if (PicoPatches[i].active)
735 m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
736 }
737 }
738
739 PicoPatchUnload();
740}
741
742void retro_cheat_set(unsigned index, bool enabled, const char *code)
743{
744 patch pt;
745 int array_len = PicoPatchCount;
746 char codeCopy[256];
747 char *buff;
748
749 if (code=='\0') return;
750 strcpy(codeCopy,code);
751 buff = strtok(codeCopy,"+");
752
753 while (buff != NULL)
754 {
755 decode(buff, &pt);
756 if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
757 {
758 log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
759 return;
760 }
761
762 /* code was good, add it */
763 if (array_len < PicoPatchCount + 1)
764 {
765 void *ptr;
766 array_len *= 2;
767 array_len++;
768 ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
769 if (ptr == NULL) {
770 log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
771 return;
772 }
773 PicoPatches = ptr;
774 }
775 strcpy(PicoPatches[PicoPatchCount].code, buff);
776
777 PicoPatches[PicoPatchCount].active = enabled;
778 PicoPatches[PicoPatchCount].addr = pt.addr;
779 PicoPatches[PicoPatchCount].data = pt.data;
780 PicoPatches[PicoPatchCount].comp = pt.comp;
781 if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
782 PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
783 else
784 PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
785 PicoPatchCount++;
786
787 buff = strtok(NULL,"+");
788 }
789}
790
791/* multidisk support */
792static bool disk_ejected;
793static unsigned int disk_current_index;
794static unsigned int disk_count;
795static struct disks_state {
796 char *fname;
797} disks[8];
798
799static bool disk_set_eject_state(bool ejected)
800{
801 // TODO?
802 disk_ejected = ejected;
803 return true;
804}
805
806static bool disk_get_eject_state(void)
807{
808 return disk_ejected;
809}
810
811static unsigned int disk_get_image_index(void)
812{
813 return disk_current_index;
814}
815
816static bool disk_set_image_index(unsigned int index)
817{
818 enum cd_img_type cd_type;
819 int ret;
820
821 if (index >= sizeof(disks) / sizeof(disks[0]))
822 return false;
823
824 if (disks[index].fname == NULL) {
825 if (log_cb)
826 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
827
828 // RetroArch specifies "no disk" with index == count,
829 // so don't fail here..
830 disk_current_index = index;
831 return true;
832 }
833
834 if (log_cb)
835 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
836 disks[index].fname);
837
838 ret = -1;
839 cd_type = PicoCdCheck(disks[index].fname, NULL);
840 if (cd_type != CIT_NOT_CD)
841 ret = cdd_load(disks[index].fname, cd_type);
842 if (ret != 0) {
843 if (log_cb)
844 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
845 return 0;
846 }
847
848 disk_current_index = index;
849 return true;
850}
851
852static unsigned int disk_get_num_images(void)
853{
854 return disk_count;
855}
856
857static bool disk_replace_image_index(unsigned index,
858 const struct retro_game_info *info)
859{
860 bool ret = true;
861
862 if (index >= sizeof(disks) / sizeof(disks[0]))
863 return false;
864
865 if (disks[index].fname != NULL)
866 free(disks[index].fname);
867 disks[index].fname = NULL;
868
869 if (info != NULL) {
870 disks[index].fname = strdup(info->path);
871 if (index == disk_current_index)
872 ret = disk_set_image_index(index);
873 }
874
875 return ret;
876}
877
878static bool disk_add_image_index(void)
879{
880 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
881 return false;
882
883 disk_count++;
884 return true;
885}
886
887static struct retro_disk_control_callback disk_control = {
888 disk_set_eject_state,
889 disk_get_eject_state,
890 disk_get_image_index,
891 disk_set_image_index,
892 disk_get_num_images,
893 disk_replace_image_index,
894 disk_add_image_index,
895};
896
897static void disk_tray_open(void)
898{
899 if (log_cb)
900 log_cb(RETRO_LOG_INFO, "cd tray open\n");
901 disk_ejected = 1;
902}
903
904static void disk_tray_close(void)
905{
906 if (log_cb)
907 log_cb(RETRO_LOG_INFO, "cd tray close\n");
908 disk_ejected = 0;
909}
910
911
912static const char * const biosfiles_us[] = {
913 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
914};
915static const char * const biosfiles_eu[] = {
916 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
917};
918static const char * const biosfiles_jp[] = {
919 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
920};
921
922static void make_system_path(char *buf, size_t buf_size,
923 const char *name, const char *ext)
924{
925 const char *dir = NULL;
926
927 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
928 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
929 }
930 else {
931 snprintf(buf, buf_size, "%s%s", name, ext);
932 }
933}
934
935static const char *find_bios(int *region, const char *cd_fname)
936{
937 const char * const *files;
938 static char path[256];
939 int i, count;
940 FILE *f = NULL;
941
942 if (*region == 4) { // US
943 files = biosfiles_us;
944 count = sizeof(biosfiles_us) / sizeof(char *);
945 } else if (*region == 8) { // EU
946 files = biosfiles_eu;
947 count = sizeof(biosfiles_eu) / sizeof(char *);
948 } else if (*region == 1 || *region == 2) {
949 files = biosfiles_jp;
950 count = sizeof(biosfiles_jp) / sizeof(char *);
951 } else {
952 return NULL;
953 }
954
955 for (i = 0; i < count; i++)
956 {
957 make_system_path(path, sizeof(path), files[i], ".bin");
958 f = fopen(path, "rb");
959 if (f != NULL)
960 break;
961
962 make_system_path(path, sizeof(path), files[i], ".zip");
963 f = fopen(path, "rb");
964 if (f != NULL)
965 break;
966 }
967
968 if (f != NULL) {
969 if (log_cb)
970 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
971 fclose(f);
972 return path;
973 }
974
975 return NULL;
976}
977
7612bf90 978bool retro_load_game(const struct retro_game_info *info)
979{
980 enum media_type_e media_type;
981 static char carthw_path[256];
982 size_t i;
983
984 struct retro_input_descriptor desc[] = {
985 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
986 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
987 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
988 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
989 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
990 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
991 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
992 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
993 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
994 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
995 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
996 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
997
998 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
999 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1000 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1001 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1002 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
1003 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
1004 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
1005 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
1006 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
1007 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
1008 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
1009 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
1010
1011 { 0 },
1012 };
1013
1014 struct retro_input_descriptor desc_sms[] = {
1015 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1016 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1017 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1018 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1019 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1020 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1021 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1022
1023 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1024 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1025 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1026 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1027 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1028 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1029 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1030
1031 { 0 },
1032 };
1033
7612bf90 1034 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
1035 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
1036 if (log_cb)
1037 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
1038 return false;
1039 }
1040
1041 if (info == NULL || info->path == NULL) {
1042 if (log_cb)
1043 log_cb(RETRO_LOG_ERROR, "info->path required\n");
1044 return false;
1045 }
1046
1047 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
1048 if (disks[i].fname != NULL) {
1049 free(disks[i].fname);
1050 disks[i].fname = NULL;
1051 }
1052 }
1053
1054 disk_current_index = 0;
1055 disk_count = 1;
1056 disks[0].fname = strdup(info->path);
1057
1058 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
1059
1060 media_type = PicoLoadMedia(info->path, carthw_path,
1061 find_bios, NULL);
1062
1063 switch (media_type) {
1064 case PM_BAD_DETECT:
1065 if (log_cb)
1066 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
1067 return false;
1068 case PM_BAD_CD:
1069 if (log_cb)
1070 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
1071 return false;
1072 case PM_BAD_CD_NO_BIOS:
1073 if (log_cb)
1074 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
1075 return false;
1076 case PM_ERROR:
1077 if (log_cb)
1078 log_cb(RETRO_LOG_ERROR, "Load error\n");
1079 return false;
1080 default:
1081 break;
1082 }
1083
1084 if (media_type == PM_MARK3)
1085 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1086 else
1087 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1088
1089 PicoLoopPrepare();
1090
1091 PicoWriteSound = snd_write;
1092 memset(sndBuffer, 0, sizeof(sndBuffer));
1093 PsndOut = sndBuffer;
1094 PsndRerate(0);
1095
1096 return true;
1097}
1098
1099bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1100{
1101 return false;
1102}
1103
1104void retro_unload_game(void)
1105{
1106}
1107
1108unsigned retro_get_region(void)
1109{
1110 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1111}
1112
1113void *retro_get_memory_data(unsigned type)
1114{
1115 uint8_t* data;
1116
1117 switch(type)
1118 {
1119 case RETRO_MEMORY_SAVE_RAM:
93f9619e 1120 if (PicoIn.AHW & PAHW_MCD)
7612bf90 1121 data = Pico_mcd->bram;
1122 else
28a5b392 1123 data = Pico.sv.data;
7612bf90 1124 break;
1125 case RETRO_MEMORY_SYSTEM_RAM:
93f9619e 1126 if (PicoIn.AHW & PAHW_SMS)
28a5b392 1127 data = PicoMem.zram;
7612bf90 1128 else
28a5b392 1129 data = PicoMem.ram;
7612bf90 1130 break;
1131 default:
1132 data = NULL;
1133 break;
1134 }
1135
1136 return data;
1137}
1138
1139size_t retro_get_memory_size(unsigned type)
1140{
1141 unsigned int i;
1142 int sum;
1143
1144 switch(type)
1145 {
1146 case RETRO_MEMORY_SAVE_RAM:
93f9619e 1147 if (PicoIn.AHW & PAHW_MCD)
7612bf90 1148 // bram
1149 return 0x2000;
1150
1151 if (Pico.m.frame_count == 0)
28a5b392 1152 return Pico.sv.size;
7612bf90 1153
1154 // if game doesn't write to sram, don't report it to
1155 // libretro so that RA doesn't write out zeroed .srm
28a5b392 1156 for (i = 0, sum = 0; i < Pico.sv.size; i++)
1157 sum |= Pico.sv.data[i];
7612bf90 1158
28a5b392 1159 return (sum != 0) ? Pico.sv.size : 0;
7612bf90 1160
1161 case RETRO_MEMORY_SYSTEM_RAM:
93f9619e 1162 if (PicoIn.AHW & PAHW_SMS)
7612bf90 1163 return 0x2000;
1164 else
28a5b392 1165 return sizeof(PicoMem.ram);
7612bf90 1166
1167 default:
1168 return 0;
1169 }
1170
1171}
1172
1173void retro_reset(void)
1174{
1175 PicoReset();
1176}
1177
1178static const unsigned short retro_pico_map[] = {
1179 1 << GBTN_B,
1180 1 << GBTN_A,
1181 1 << GBTN_MODE,
1182 1 << GBTN_START,
1183 1 << GBTN_UP,
1184 1 << GBTN_DOWN,
1185 1 << GBTN_LEFT,
1186 1 << GBTN_RIGHT,
1187 1 << GBTN_C,
1188 1 << GBTN_Y,
1189 1 << GBTN_X,
1190 1 << GBTN_Z,
1191};
1192#define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1193
1194static void snd_write(int len)
1195{
1196 audio_batch_cb(PsndOut, len / 4);
1197}
1198
1199static enum input_device input_name_to_val(const char *name)
1200{
1201 if (strcmp(name, "3 button pad") == 0)
1202 return PICO_INPUT_PAD_3BTN;
1203 if (strcmp(name, "6 button pad") == 0)
1204 return PICO_INPUT_PAD_6BTN;
1205 if (strcmp(name, "None") == 0)
1206 return PICO_INPUT_NOTHING;
1207
1208 if (log_cb)
1209 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1210 return PICO_INPUT_PAD_3BTN;
1211}
1212
1213static void update_variables(void)
1214{
1215 struct retro_variable var;
24aab4da 1216 int OldPicoRegionOverride;
1217 float old_user_vout_width;
7612bf90 1218
1219 var.value = NULL;
1220 var.key = "picodrive_input1";
1221 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1222 PicoSetInputDevice(0, input_name_to_val(var.value));
1223
1224 var.value = NULL;
1225 var.key = "picodrive_input2";
1226 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1227 PicoSetInputDevice(1, input_name_to_val(var.value));
1228
1229 var.value = NULL;
1230 var.key = "picodrive_sprlim";
1231 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1232 if (strcmp(var.value, "enabled") == 0)
93f9619e 1233 PicoIn.opt |= POPT_DIS_SPRITE_LIM;
7612bf90 1234 else
93f9619e 1235 PicoIn.opt &= ~POPT_DIS_SPRITE_LIM;
7612bf90 1236 }
1237
1238 var.value = NULL;
1239 var.key = "picodrive_ramcart";
1240 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1241 if (strcmp(var.value, "enabled") == 0)
93f9619e 1242 PicoIn.opt |= POPT_EN_MCD_RAMCART;
7612bf90 1243 else
93f9619e 1244 PicoIn.opt &= ~POPT_EN_MCD_RAMCART;
7612bf90 1245 }
1246
93f9619e 1247 OldPicoRegionOverride = PicoIn.regionOverride;
7612bf90 1248 var.value = NULL;
1249 var.key = "picodrive_region";
1250 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1251 if (strcmp(var.value, "Auto") == 0)
93f9619e 1252 PicoIn.regionOverride = 0;
7612bf90 1253 else if (strcmp(var.value, "Japan NTSC") == 0)
93f9619e 1254 PicoIn.regionOverride = 1;
7612bf90 1255 else if (strcmp(var.value, "Japan PAL") == 0)
93f9619e 1256 PicoIn.regionOverride = 2;
7612bf90 1257 else if (strcmp(var.value, "US") == 0)
93f9619e 1258 PicoIn.regionOverride = 4;
7612bf90 1259 else if (strcmp(var.value, "Europe") == 0)
93f9619e 1260 PicoIn.regionOverride = 8;
7612bf90 1261 }
1262
7612bf90 1263 // Update region, fps and sound flags if needed
93f9619e 1264 if (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)
7612bf90 1265 {
1266 PicoDetectRegion();
1267 PicoLoopPrepare();
1268 PsndRerate(1);
1269 }
1270
24aab4da 1271 old_user_vout_width = user_vout_width;
7612bf90 1272 var.value = NULL;
1273 var.key = "picodrive_aspect";
1274 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1275 if (strcmp(var.value, "4/3") == 0)
1276 user_vout_width = VOUT_4_3;
1277 else if (strcmp(var.value, "CRT") == 0)
1278 user_vout_width = VOUT_CRT;
1279 else
1280 user_vout_width = VOUT_PAR;
1281 }
1282
1283 var.value = NULL;
1284 var.key = "picodrive_overscan";
1285 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1286 if (strcmp(var.value, "enabled") == 0)
1287 show_overscan = true;
1288 else
1289 show_overscan = false;
1290 }
1291
1292 if (user_vout_width != old_user_vout_width)
1293 {
1294 // Update the geometry
1295 struct retro_system_av_info av_info;
1296 retro_get_system_av_info(&av_info);
1297 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1298 }
1299
35f2b65e 1300 var.value = NULL;
1301 var.key = "picodrive_overclk68k";
1302 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1303 PicoIn.overclockM68k = 0;
1304 if (var.value[0] == '+')
1305 PicoIn.overclockM68k = atoi(var.value + 1);
1306 }
1307
7612bf90 1308#ifdef DRC_SH2
1309 var.value = NULL;
1310 var.key = "picodrive_drc";
1311 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1312 if (strcmp(var.value, "enabled") == 0)
93f9619e 1313 PicoIn.opt |= POPT_EN_DRC;
7612bf90 1314 else
93f9619e 1315 PicoIn.opt &= ~POPT_EN_DRC;
7612bf90 1316 }
1317#endif
1318#ifdef _3DS
1319 if(!ctr_svchack_successful)
93f9619e 1320 PicoIn.opt &= ~POPT_EN_DRC;
7612bf90 1321#endif
1322}
1323
1324void retro_run(void)
1325{
1326 bool updated = false;
1327 int pad, i;
1328
1329 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1330 update_variables();
1331
1332 input_poll_cb();
1333
93f9619e 1334 PicoIn.pad[0] = PicoIn.pad[1] = 0;
7612bf90 1335 for (pad = 0; pad < 2; pad++)
1336 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1337 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
93f9619e 1338 PicoIn.pad[pad] |= retro_pico_map[i];
7612bf90 1339
1340 PicoPatchApply();
1341 PicoFrame();
1342
1343 video_cb((short *)vout_buf + vout_offset,
1344 vout_width, vout_height, vout_width * 2);
1345}
1346
7612bf90 1347void retro_init(void)
1348{
1349 struct retro_log_callback log;
1350 int level;
1351
1352 level = 0;
1353 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1354
1355 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1356 log_cb = log.log;
1357 else
1358 log_cb = NULL;
1359
1360 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1361
1362#ifdef _3DS
1363 ctr_svchack_successful = ctr_svchack_init();
1364#elif defined(VITA)
1365 sceBlock = getVMBlock();
1366#endif
1367
93f9619e 1368 PicoIn.opt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
7612bf90 1369 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1370 | POPT_EN_32X|POPT_EN_PWM
1371 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1372#ifdef __arm__
1373#ifdef _3DS
1374 if (ctr_svchack_successful)
1375#endif
93f9619e 1376 PicoIn.opt |= POPT_EN_DRC;
7612bf90 1377#endif
1378 PsndRate = 44100;
93f9619e 1379 PicoIn.autoRgnOrder = 0x184; // US, EU, JP
7612bf90 1380
1381 vout_width = 320;
1382 vout_height = 240;
1383#ifdef _3DS
1384 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1385#else
1386 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1387#endif
1388
1389 PicoInit();
1390 PicoDrawSetOutFormat(PDF_RGB555, 0);
1391 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1392
1393 //PicoMessage = plat_status_msg_busy_next;
1394 PicoMCDopenTray = disk_tray_open;
1395 PicoMCDcloseTray = disk_tray_close;
1396
1397 update_variables();
1398}
1399
1400void retro_deinit(void)
1401{
1402#ifdef _3DS
1403 linearFree(vout_buf);
1404#else
1405 free(vout_buf);
1406#endif
1407 vout_buf = NULL;
1408 PicoExit();
1409}
df925153 1410
1411// vim:shiftwidth=3:ts=3:expandtab
fast MegaDrive/MegaCD/32X emulator