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improve 64bit portability
[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
48c9e01b 82static short ALIGNED(4) sndBuffer[2*44100/50];
7612bf90 83
84static void snd_write(int len);
85
86#ifdef _WIN32
87#define SLASH '\\'
88#else
89#define SLASH '/'
90#endif
91
92/* functions called by the core */
93
94void cache_flush_d_inval_i(void *start, void *end)
95{
96#ifdef __arm__
97 size_t len = (char *)end - (char *)start;
df925153 98 (void)len;
7612bf90 99#if defined(__BLACKBERRY_QNX__)
100 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
101#elif defined(__MACH__)
102 sys_dcache_flush(start, len);
103 sys_icache_invalidate(start, len);
104#elif defined(_3DS)
105 ctr_flush_invalidate_cache();
106#elif defined(VITA)
107 sceKernelSyncVMDomain(sceBlock, start, len);
108#else
109 __clear_cache(start, end);
110#endif
111#endif
112}
113
114#ifdef _WIN32
115/* mmap() replacement for Windows
116 *
117 * Author: Mike Frysinger <vapier@gentoo.org>
118 * Placed into the public domain
119 */
120
121/* References:
122 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
123 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
124 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
125 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
126 */
127
128#define PROT_READ 0x1
129#define PROT_WRITE 0x2
130/* This flag is only available in WinXP+ */
131#ifdef FILE_MAP_EXECUTE
132#define PROT_EXEC 0x4
133#else
134#define PROT_EXEC 0x0
135#define FILE_MAP_EXECUTE 0
136#endif
137
138#define MAP_SHARED 0x01
139#define MAP_PRIVATE 0x02
140#define MAP_ANONYMOUS 0x20
141#define MAP_ANON MAP_ANONYMOUS
142#define MAP_FAILED ((void *) -1)
143
144#ifdef __USE_FILE_OFFSET64
145# define DWORD_HI(x) (x >> 32)
146# define DWORD_LO(x) ((x) & 0xffffffff)
147#else
148# define DWORD_HI(x) (0)
149# define DWORD_LO(x) (x)
150#endif
151
152static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
153{
154 uint32_t flProtect, dwDesiredAccess;
155 off_t end;
156 HANDLE mmap_fd, h;
157 void *ret;
158
159 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
160 return MAP_FAILED;
161 if (fd == -1) {
162 if (!(flags & MAP_ANON) || offset)
163 return MAP_FAILED;
164 } else if (flags & MAP_ANON)
165 return MAP_FAILED;
166
167 if (prot & PROT_WRITE) {
168 if (prot & PROT_EXEC)
169 flProtect = PAGE_EXECUTE_READWRITE;
170 else
171 flProtect = PAGE_READWRITE;
172 } else if (prot & PROT_EXEC) {
173 if (prot & PROT_READ)
174 flProtect = PAGE_EXECUTE_READ;
175 else if (prot & PROT_EXEC)
176 flProtect = PAGE_EXECUTE;
177 } else
178 flProtect = PAGE_READONLY;
179
180 end = length + offset;
181
182 if (fd == -1)
183 mmap_fd = INVALID_HANDLE_VALUE;
184 else
185 mmap_fd = (HANDLE)_get_osfhandle(fd);
186 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
187 if (h == NULL)
188 return MAP_FAILED;
189
190 if (prot & PROT_WRITE)
191 dwDesiredAccess = FILE_MAP_WRITE;
192 else
193 dwDesiredAccess = FILE_MAP_READ;
194 if (prot & PROT_EXEC)
195 dwDesiredAccess |= FILE_MAP_EXECUTE;
196 if (flags & MAP_PRIVATE)
197 dwDesiredAccess |= FILE_MAP_COPY;
198 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
199 if (ret == NULL) {
200 CloseHandle(h);
201 ret = MAP_FAILED;
202 }
203 return ret;
204}
205
206static void munmap(void *addr, size_t length)
207{
208 UnmapViewOfFile(addr);
209 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
210}
211#elif defined(NO_MMAP)
212#define PROT_EXEC 0x04
213#define MAP_FAILED 0
214#define PROT_READ 0
215#define PROT_WRITE 0
216#define MAP_PRIVATE 0
217#define MAP_ANONYMOUS 0
218
219void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
220{
221 return malloc(len);
222}
223
224void munmap(void *base_addr, size_t len)
225{
226 free(base_addr);
227}
228
229int mprotect(void *addr, size_t len, int prot)
230{
231 /* stub - not really needed at this point since this codepath has no dynarecs */
232 return 0;
233}
234
235#endif
236
237#ifndef MAP_ANONYMOUS
238#define MAP_ANONYMOUS MAP_ANON
239#endif
240
241#ifdef _3DS
242typedef struct
243{
244 unsigned int requested_map;
245 void* buffer;
246}pico_mmap_t;
247
248pico_mmap_t pico_mmaps[] = {
249 {0x02000000, 0},
250 {0x06000000, 0},
251 {NULL, 0}
252};
253
254void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
255{
256 (void)is_fixed;
257
258 if (ctr_svchack_successful)
259 {
260 pico_mmap_t* pico_mmap;
261
262 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
263 {
264 if ((pico_mmap->requested_map == addr))
265 {
266 unsigned int ptr_aligned, tmp;
267 unsigned int currentHandle;
268 unsigned int perm = 0b011;
269
270 if (need_exec)
271 perm = 0b111;
272
273 size = (size + 0xFFF) & ~0xFFF;
274 pico_mmap->buffer = malloc(size + 0x1000);
275 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
276
277 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
278
279 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
280 {
281 if (log_cb)
282 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
283 exit(1);
284 }
285
286 svcCloseHandle(currentHandle);
287 return (void*)pico_mmap->requested_map;
288 }
289 }
290 }
291
292 return malloc(size);
293}
294
295void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
296{
297 if (ctr_svchack_successful)
298 {
299 pico_mmap_t* pico_mmap;
300
301 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
302 {
303 if ((pico_mmap->requested_map == (unsigned int)ptr))
304 {
305 unsigned int ptr_aligned;
306 unsigned int currentHandle;
307 void* tmp;
308
309 oldsize = (oldsize + 0xFFF) & ~0xFFF;
310 newsize = (newsize + 0xFFF) & ~0xFFF;
311 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
312
313 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
314
315 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
316
317 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
318 if(!tmp)
319 return NULL;
320
321 pico_mmap->buffer = tmp;
322 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
323
324 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
325
326 svcCloseHandle(currentHandle);
327
328 return ptr;
329 }
330 }
331 }
332
333 return realloc(ptr, newsize);
334
335}
336void plat_munmap(void *ptr, size_t size)
337{
338 if (ctr_svchack_successful)
339 {
340 pico_mmap_t* pico_mmap;
341
342 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
343 {
344 if ((pico_mmap->requested_map == (unsigned int)ptr))
345 {
346 unsigned int ptr_aligned;
347 unsigned int currentHandle;
348
349 size = (size + 0xFFF) & ~0xFFF;
350 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
351
352 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
353
354 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
355
356 svcCloseHandle(currentHandle);
357
358 free(pico_mmap->buffer);
359 pico_mmap->buffer = NULL;
360 return;
361 }
362 }
363 }
364
365 free(ptr);
366}
367
368#else
369void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
370{
371 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
372 void *req, *ret;
373
48c9e01b 374 req = (void *)(uintptr_t)addr;
7612bf90 375 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
376 if (ret == MAP_FAILED) {
377 if (log_cb)
378 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
379 return NULL;
380 }
381
48c9e01b 382 if (addr != 0 && ret != (void *)(uintptr_t)addr) {
7612bf90 383 if (log_cb)
384 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
385 addr, ret);
386
387 if (is_fixed) {
388 munmap(ret, size);
389 return NULL;
390 }
391 }
392
393 return ret;
394}
395
396void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
397{
398#ifdef __linux__
399 void *ret = mremap(ptr, oldsize, newsize, 0);
400 if (ret == MAP_FAILED)
401 return NULL;
402
403 return ret;
404#else
405 void *tmp, *ret;
406 size_t preserve_size;
407
408 preserve_size = oldsize;
409 if (preserve_size > newsize)
410 preserve_size = newsize;
411 tmp = malloc(preserve_size);
412 if (tmp == NULL)
413 return NULL;
414 memcpy(tmp, ptr, preserve_size);
415
416 munmap(ptr, oldsize);
417 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
418 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
419 if (ret == MAP_FAILED) {
420 free(tmp);
421 return NULL;
422 }
423 memcpy(ret, tmp, preserve_size);
424 free(tmp);
425 return ret;
426#endif
427}
428
429void plat_munmap(void *ptr, size_t size)
430{
431 if (ptr != NULL)
432 munmap(ptr, size);
433}
434#endif
435
df925153 436// if NULL is returned, static buffer is used
437void *plat_mem_get_for_drc(size_t size)
438{
439 void *mem = NULL;
440#ifdef VITA
441 sceKernelGetMemBlockBase(sceBlock, &mem);
442#endif
443 return mem;
444}
445
7612bf90 446int plat_mem_set_exec(void *ptr, size_t size)
447{
df925153 448 int ret = -1;
7612bf90 449#ifdef _WIN32
a0b95da1 450 DWORD oldProtect = 0;
451 ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, &oldProtect);
7612bf90 452 if (ret == 0 && log_cb)
df925153 453 log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size,
454 GetLastError());
7612bf90 455#elif defined(_3DS)
7612bf90 456 if (ctr_svchack_successful)
457 {
458 unsigned int currentHandle;
459 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
460 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
461 size, MEMOP_PROT, 0b111);
462 svcCloseHandle(currentHandle);
463 ctr_flush_invalidate_cache();
464
465 }
466 else
467 {
468 if (log_cb)
469 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
470 exit(1);
471 }
472
473#elif defined(VITA)
df925153 474 ret = sceKernelOpenVMDomain();
7612bf90 475#else
df925153 476 ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
7612bf90 477 if (ret != 0 && log_cb)
478 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
479#endif
480 return ret;
481}
482
483void emu_video_mode_change(int start_line, int line_count, int is_32cols)
484{
24aab4da 485 struct retro_system_av_info av_info;
486
7612bf90 487 memset(vout_buf, 0, 320 * 240 * 2);
488 vout_width = is_32cols ? 256 : 320;
489 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
490 if (show_overscan == true) line_count += 16;
491 if (show_overscan == true) start_line -= 8;
492
493 vout_height = line_count;
494 vout_offset = vout_width * start_line;
495
496 // Update the geometry
7612bf90 497 retro_get_system_av_info(&av_info);
498 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
499}
500
501void emu_32x_startup(void)
502{
503}
504
505void lprintf(const char *fmt, ...)
506{
507 char buffer[256];
508 va_list ap;
509 va_start(ap, fmt);
510 vsprintf(buffer, fmt, ap);
511 /* TODO - add 'level' param for warning/error messages? */
512 if (log_cb)
513 log_cb(RETRO_LOG_INFO, "%s", buffer);
514 va_end(ap);
515}
516
517/* libretro */
518void retro_set_environment(retro_environment_t cb)
519{
520 static const struct retro_variable vars[] = {
521 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
522 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
523 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
524 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
525 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
7612bf90 526 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
527 { "picodrive_overscan", "Show Overscan; disabled|enabled" },
35f2b65e 528 { "picodrive_overclk68k", "68k overclock; disabled|+25%|+50%|+75%|+100%|+200%|+400%" },
7612bf90 529#ifdef DRC_SH2
530 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
531#endif
532 { NULL, NULL },
533 };
534
535 environ_cb = cb;
536
537 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
538}
539
540void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
541void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
542void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
543void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
544void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
545
546unsigned retro_api_version(void)
547{
548 return RETRO_API_VERSION;
549}
550
551void retro_set_controller_port_device(unsigned port, unsigned device)
552{
553}
554
555void retro_get_system_info(struct retro_system_info *info)
556{
557 memset(info, 0, sizeof(*info));
558 info->library_name = "PicoDrive";
559#ifndef GIT_VERSION
560#define GIT_VERSION ""
561#endif
562 info->library_version = VERSION GIT_VERSION;
563 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
564 info->need_fullpath = true;
565}
566
567void retro_get_system_av_info(struct retro_system_av_info *info)
568{
24aab4da 569 float common_width;
570
7612bf90 571 memset(info, 0, sizeof(*info));
572 info->timing.fps = Pico.m.pal ? 50 : 60;
573 info->timing.sample_rate = 44100;
574 info->geometry.base_width = vout_width;
575 info->geometry.base_height = vout_height;
576 info->geometry.max_width = vout_width;
577 info->geometry.max_height = vout_height;
578
24aab4da 579 common_width = vout_width;
7612bf90 580 if (user_vout_width != 0)
581 common_width = user_vout_width;
582
583 info->geometry.aspect_ratio = common_width / vout_height;
584}
585
586/* savestates */
587struct savestate_state {
588 const char *load_buf;
589 char *save_buf;
590 size_t size;
591 size_t pos;
592};
593
594size_t state_read(void *p, size_t size, size_t nmemb, void *file)
595{
596 struct savestate_state *state = file;
597 size_t bsize = size * nmemb;
598
599 if (state->pos + bsize > state->size) {
600 if (log_cb)
601 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
602 state->pos + bsize, state->size);
603 bsize = state->size - state->pos;
604 if ((int)bsize <= 0)
605 return 0;
606 }
607
608 memcpy(p, state->load_buf + state->pos, bsize);
609 state->pos += bsize;
610 return bsize;
611}
612
613size_t state_write(void *p, size_t size, size_t nmemb, void *file)
614{
615 struct savestate_state *state = file;
616 size_t bsize = size * nmemb;
617
618 if (state->pos + bsize > state->size) {
619 if (log_cb)
620 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
621 state->pos + bsize, state->size);
622 bsize = state->size - state->pos;
623 if ((int)bsize <= 0)
624 return 0;
625 }
626
627 memcpy(state->save_buf + state->pos, p, bsize);
628 state->pos += bsize;
629 return bsize;
630}
631
632size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
633{
634 struct savestate_state *state = file;
635 size_t bsize = size * nmemb;
636
637 state->pos += bsize;
638 return bsize;
639}
640
641size_t state_eof(void *file)
642{
643 struct savestate_state *state = file;
644
645 return state->pos >= state->size;
646}
647
648int state_fseek(void *file, long offset, int whence)
649{
650 struct savestate_state *state = file;
651
652 switch (whence) {
653 case SEEK_SET:
654 state->pos = offset;
655 break;
656 case SEEK_CUR:
657 state->pos += offset;
658 break;
659 case SEEK_END:
660 state->pos = state->size + offset;
661 break;
662 }
663 return (int)state->pos;
664}
665
666/* savestate sizes vary wildly depending if cd/32x or
667 * carthw is active, so run the whole thing to get size */
668size_t retro_serialize_size(void)
669{
670 struct savestate_state state = { 0, };
671 int ret;
672
673 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
674 if (ret != 0)
675 return 0;
676
677 return state.pos;
678}
679
680bool retro_serialize(void *data, size_t size)
681{
682 struct savestate_state state = { 0, };
683 int ret;
684
685 state.save_buf = data;
686 state.size = size;
687 state.pos = 0;
688
689 ret = PicoStateFP(&state, 1, NULL, state_write,
690 NULL, state_fseek);
691 return ret == 0;
692}
693
694bool retro_unserialize(const void *data, size_t size)
695{
696 struct savestate_state state = { 0, };
697 int ret;
698
699 state.load_buf = data;
700 state.size = size;
701 state.pos = 0;
702
703 ret = PicoStateFP(&state, 0, state_read, NULL,
704 state_eof, state_fseek);
705 return ret == 0;
706}
707
708typedef struct patch
709{
710 unsigned int addr;
711 unsigned short data;
712 unsigned char comp;
713} patch;
714
715extern void decode(char *buff, patch *dest);
716extern uint16_t m68k_read16(uint32_t a);
717extern void m68k_write16(uint32_t a, uint16_t d);
718
719void retro_cheat_reset(void)
720{
721 int i=0;
722 unsigned int addr;
723
724 for (i = 0; i < PicoPatchCount; i++)
725 {
726 addr = PicoPatches[i].addr;
727 if (addr < Pico.romsize) {
728 if (PicoPatches[i].active)
729 *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
730 } else {
731 if (PicoPatches[i].active)
732 m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
733 }
734 }
735
736 PicoPatchUnload();
737}
738
739void retro_cheat_set(unsigned index, bool enabled, const char *code)
740{
741 patch pt;
742 int array_len = PicoPatchCount;
743 char codeCopy[256];
744 char *buff;
745
746 if (code=='\0') return;
747 strcpy(codeCopy,code);
748 buff = strtok(codeCopy,"+");
749
750 while (buff != NULL)
751 {
752 decode(buff, &pt);
753 if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
754 {
755 log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
756 return;
757 }
758
759 /* code was good, add it */
760 if (array_len < PicoPatchCount + 1)
761 {
762 void *ptr;
763 array_len *= 2;
764 array_len++;
765 ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
766 if (ptr == NULL) {
767 log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
768 return;
769 }
770 PicoPatches = ptr;
771 }
772 strcpy(PicoPatches[PicoPatchCount].code, buff);
773
774 PicoPatches[PicoPatchCount].active = enabled;
775 PicoPatches[PicoPatchCount].addr = pt.addr;
776 PicoPatches[PicoPatchCount].data = pt.data;
777 PicoPatches[PicoPatchCount].comp = pt.comp;
778 if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
779 PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
780 else
781 PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
782 PicoPatchCount++;
783
784 buff = strtok(NULL,"+");
785 }
786}
787
788/* multidisk support */
789static bool disk_ejected;
790static unsigned int disk_current_index;
791static unsigned int disk_count;
792static struct disks_state {
793 char *fname;
794} disks[8];
795
796static bool disk_set_eject_state(bool ejected)
797{
798 // TODO?
799 disk_ejected = ejected;
800 return true;
801}
802
803static bool disk_get_eject_state(void)
804{
805 return disk_ejected;
806}
807
808static unsigned int disk_get_image_index(void)
809{
810 return disk_current_index;
811}
812
813static bool disk_set_image_index(unsigned int index)
814{
815 enum cd_img_type cd_type;
816 int ret;
817
818 if (index >= sizeof(disks) / sizeof(disks[0]))
819 return false;
820
821 if (disks[index].fname == NULL) {
822 if (log_cb)
823 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
824
825 // RetroArch specifies "no disk" with index == count,
826 // so don't fail here..
827 disk_current_index = index;
828 return true;
829 }
830
831 if (log_cb)
832 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
833 disks[index].fname);
834
835 ret = -1;
836 cd_type = PicoCdCheck(disks[index].fname, NULL);
837 if (cd_type != CIT_NOT_CD)
838 ret = cdd_load(disks[index].fname, cd_type);
839 if (ret != 0) {
840 if (log_cb)
841 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
842 return 0;
843 }
844
845 disk_current_index = index;
846 return true;
847}
848
849static unsigned int disk_get_num_images(void)
850{
851 return disk_count;
852}
853
854static bool disk_replace_image_index(unsigned index,
855 const struct retro_game_info *info)
856{
857 bool ret = true;
858
859 if (index >= sizeof(disks) / sizeof(disks[0]))
860 return false;
861
862 if (disks[index].fname != NULL)
863 free(disks[index].fname);
864 disks[index].fname = NULL;
865
866 if (info != NULL) {
867 disks[index].fname = strdup(info->path);
868 if (index == disk_current_index)
869 ret = disk_set_image_index(index);
870 }
871
872 return ret;
873}
874
875static bool disk_add_image_index(void)
876{
877 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
878 return false;
879
880 disk_count++;
881 return true;
882}
883
884static struct retro_disk_control_callback disk_control = {
885 disk_set_eject_state,
886 disk_get_eject_state,
887 disk_get_image_index,
888 disk_set_image_index,
889 disk_get_num_images,
890 disk_replace_image_index,
891 disk_add_image_index,
892};
893
894static void disk_tray_open(void)
895{
896 if (log_cb)
897 log_cb(RETRO_LOG_INFO, "cd tray open\n");
898 disk_ejected = 1;
899}
900
901static void disk_tray_close(void)
902{
903 if (log_cb)
904 log_cb(RETRO_LOG_INFO, "cd tray close\n");
905 disk_ejected = 0;
906}
907
908
909static const char * const biosfiles_us[] = {
910 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
911};
912static const char * const biosfiles_eu[] = {
913 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
914};
915static const char * const biosfiles_jp[] = {
916 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
917};
918
919static void make_system_path(char *buf, size_t buf_size,
920 const char *name, const char *ext)
921{
922 const char *dir = NULL;
923
924 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
925 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
926 }
927 else {
928 snprintf(buf, buf_size, "%s%s", name, ext);
929 }
930}
931
932static const char *find_bios(int *region, const char *cd_fname)
933{
934 const char * const *files;
935 static char path[256];
936 int i, count;
937 FILE *f = NULL;
938
939 if (*region == 4) { // US
940 files = biosfiles_us;
941 count = sizeof(biosfiles_us) / sizeof(char *);
942 } else if (*region == 8) { // EU
943 files = biosfiles_eu;
944 count = sizeof(biosfiles_eu) / sizeof(char *);
945 } else if (*region == 1 || *region == 2) {
946 files = biosfiles_jp;
947 count = sizeof(biosfiles_jp) / sizeof(char *);
948 } else {
949 return NULL;
950 }
951
952 for (i = 0; i < count; i++)
953 {
954 make_system_path(path, sizeof(path), files[i], ".bin");
955 f = fopen(path, "rb");
956 if (f != NULL)
957 break;
958
959 make_system_path(path, sizeof(path), files[i], ".zip");
960 f = fopen(path, "rb");
961 if (f != NULL)
962 break;
963 }
964
965 if (f != NULL) {
966 if (log_cb)
967 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
968 fclose(f);
969 return path;
970 }
971
972 return NULL;
973}
974
7612bf90 975bool retro_load_game(const struct retro_game_info *info)
976{
977 enum media_type_e media_type;
978 static char carthw_path[256];
979 size_t i;
980
981 struct retro_input_descriptor desc[] = {
982 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
983 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
984 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
985 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
986 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
987 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
988 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
989 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
990 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
991 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
992 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
993 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
994
995 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
996 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
997 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
998 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
999 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
1000 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
1001 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
1002 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
1003 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
1004 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
1005 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
1006 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
1007
1008 { 0 },
1009 };
1010
1011 struct retro_input_descriptor desc_sms[] = {
1012 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1013 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1014 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1015 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1016 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1017 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1018 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1019
1020 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1021 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1022 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1023 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1024 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1025 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1026 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1027
1028 { 0 },
1029 };
1030
7612bf90 1031 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
1032 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
1033 if (log_cb)
1034 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
1035 return false;
1036 }
1037
1038 if (info == NULL || info->path == NULL) {
1039 if (log_cb)
1040 log_cb(RETRO_LOG_ERROR, "info->path required\n");
1041 return false;
1042 }
1043
1044 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
1045 if (disks[i].fname != NULL) {
1046 free(disks[i].fname);
1047 disks[i].fname = NULL;
1048 }
1049 }
1050
1051 disk_current_index = 0;
1052 disk_count = 1;
1053 disks[0].fname = strdup(info->path);
1054
1055 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
1056
1057 media_type = PicoLoadMedia(info->path, carthw_path,
1058 find_bios, NULL);
1059
1060 switch (media_type) {
1061 case PM_BAD_DETECT:
1062 if (log_cb)
1063 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
1064 return false;
1065 case PM_BAD_CD:
1066 if (log_cb)
1067 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
1068 return false;
1069 case PM_BAD_CD_NO_BIOS:
1070 if (log_cb)
1071 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
1072 return false;
1073 case PM_ERROR:
1074 if (log_cb)
1075 log_cb(RETRO_LOG_ERROR, "Load error\n");
1076 return false;
1077 default:
1078 break;
1079 }
1080
1081 if (media_type == PM_MARK3)
1082 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1083 else
1084 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1085
1086 PicoLoopPrepare();
1087
6311a3ba 1088 PicoIn.writeSound = snd_write;
7612bf90 1089 memset(sndBuffer, 0, sizeof(sndBuffer));
6311a3ba 1090 PicoIn.sndOut = sndBuffer;
7612bf90 1091 PsndRerate(0);
1092
1093 return true;
1094}
1095
1096bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1097{
1098 return false;
1099}
1100
1101void retro_unload_game(void)
1102{
1103}
1104
1105unsigned retro_get_region(void)
1106{
1107 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1108}
1109
1110void *retro_get_memory_data(unsigned type)
1111{
1112 uint8_t* data;
1113
1114 switch(type)
1115 {
1116 case RETRO_MEMORY_SAVE_RAM:
93f9619e 1117 if (PicoIn.AHW & PAHW_MCD)
7612bf90 1118 data = Pico_mcd->bram;
1119 else
28a5b392 1120 data = Pico.sv.data;
7612bf90 1121 break;
1122 case RETRO_MEMORY_SYSTEM_RAM:
93f9619e 1123 if (PicoIn.AHW & PAHW_SMS)
28a5b392 1124 data = PicoMem.zram;
7612bf90 1125 else
28a5b392 1126 data = PicoMem.ram;
7612bf90 1127 break;
1128 default:
1129 data = NULL;
1130 break;
1131 }
1132
1133 return data;
1134}
1135
1136size_t retro_get_memory_size(unsigned type)
1137{
1138 unsigned int i;
1139 int sum;
1140
1141 switch(type)
1142 {
1143 case RETRO_MEMORY_SAVE_RAM:
93f9619e 1144 if (PicoIn.AHW & PAHW_MCD)
7612bf90 1145 // bram
1146 return 0x2000;
1147
1148 if (Pico.m.frame_count == 0)
28a5b392 1149 return Pico.sv.size;
7612bf90 1150
1151 // if game doesn't write to sram, don't report it to
1152 // libretro so that RA doesn't write out zeroed .srm
28a5b392 1153 for (i = 0, sum = 0; i < Pico.sv.size; i++)
1154 sum |= Pico.sv.data[i];
7612bf90 1155
28a5b392 1156 return (sum != 0) ? Pico.sv.size : 0;
7612bf90 1157
1158 case RETRO_MEMORY_SYSTEM_RAM:
93f9619e 1159 if (PicoIn.AHW & PAHW_SMS)
7612bf90 1160 return 0x2000;
1161 else
28a5b392 1162 return sizeof(PicoMem.ram);
7612bf90 1163
1164 default:
1165 return 0;
1166 }
1167
1168}
1169
1170void retro_reset(void)
1171{
1172 PicoReset();
1173}
1174
1175static const unsigned short retro_pico_map[] = {
1176 1 << GBTN_B,
1177 1 << GBTN_A,
1178 1 << GBTN_MODE,
1179 1 << GBTN_START,
1180 1 << GBTN_UP,
1181 1 << GBTN_DOWN,
1182 1 << GBTN_LEFT,
1183 1 << GBTN_RIGHT,
1184 1 << GBTN_C,
1185 1 << GBTN_Y,
1186 1 << GBTN_X,
1187 1 << GBTN_Z,
1188};
1189#define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1190
1191static void snd_write(int len)
1192{
6311a3ba 1193 audio_batch_cb(PicoIn.sndOut, len / 4);
7612bf90 1194}
1195
1196static enum input_device input_name_to_val(const char *name)
1197{
1198 if (strcmp(name, "3 button pad") == 0)
1199 return PICO_INPUT_PAD_3BTN;
1200 if (strcmp(name, "6 button pad") == 0)
1201 return PICO_INPUT_PAD_6BTN;
1202 if (strcmp(name, "None") == 0)
1203 return PICO_INPUT_NOTHING;
1204
1205 if (log_cb)
1206 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1207 return PICO_INPUT_PAD_3BTN;
1208}
1209
1210static void update_variables(void)
1211{
1212 struct retro_variable var;
24aab4da 1213 int OldPicoRegionOverride;
1214 float old_user_vout_width;
7612bf90 1215
1216 var.value = NULL;
1217 var.key = "picodrive_input1";
1218 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1219 PicoSetInputDevice(0, input_name_to_val(var.value));
1220
1221 var.value = NULL;
1222 var.key = "picodrive_input2";
1223 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1224 PicoSetInputDevice(1, input_name_to_val(var.value));
1225
1226 var.value = NULL;
1227 var.key = "picodrive_sprlim";
1228 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1229 if (strcmp(var.value, "enabled") == 0)
93f9619e 1230 PicoIn.opt |= POPT_DIS_SPRITE_LIM;
7612bf90 1231 else
93f9619e 1232 PicoIn.opt &= ~POPT_DIS_SPRITE_LIM;
7612bf90 1233 }
1234
1235 var.value = NULL;
1236 var.key = "picodrive_ramcart";
1237 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1238 if (strcmp(var.value, "enabled") == 0)
93f9619e 1239 PicoIn.opt |= POPT_EN_MCD_RAMCART;
7612bf90 1240 else
93f9619e 1241 PicoIn.opt &= ~POPT_EN_MCD_RAMCART;
7612bf90 1242 }
1243
93f9619e 1244 OldPicoRegionOverride = PicoIn.regionOverride;
7612bf90 1245 var.value = NULL;
1246 var.key = "picodrive_region";
1247 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1248 if (strcmp(var.value, "Auto") == 0)
93f9619e 1249 PicoIn.regionOverride = 0;
7612bf90 1250 else if (strcmp(var.value, "Japan NTSC") == 0)
93f9619e 1251 PicoIn.regionOverride = 1;
7612bf90 1252 else if (strcmp(var.value, "Japan PAL") == 0)
93f9619e 1253 PicoIn.regionOverride = 2;
7612bf90 1254 else if (strcmp(var.value, "US") == 0)
93f9619e 1255 PicoIn.regionOverride = 4;
7612bf90 1256 else if (strcmp(var.value, "Europe") == 0)
93f9619e 1257 PicoIn.regionOverride = 8;
7612bf90 1258 }
1259
7612bf90 1260 // Update region, fps and sound flags if needed
93f9619e 1261 if (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)
7612bf90 1262 {
1263 PicoDetectRegion();
1264 PicoLoopPrepare();
1265 PsndRerate(1);
1266 }
1267
24aab4da 1268 old_user_vout_width = user_vout_width;
7612bf90 1269 var.value = NULL;
1270 var.key = "picodrive_aspect";
1271 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1272 if (strcmp(var.value, "4/3") == 0)
1273 user_vout_width = VOUT_4_3;
1274 else if (strcmp(var.value, "CRT") == 0)
1275 user_vout_width = VOUT_CRT;
1276 else
1277 user_vout_width = VOUT_PAR;
1278 }
1279
1280 var.value = NULL;
1281 var.key = "picodrive_overscan";
1282 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1283 if (strcmp(var.value, "enabled") == 0)
1284 show_overscan = true;
1285 else
1286 show_overscan = false;
1287 }
1288
1289 if (user_vout_width != old_user_vout_width)
1290 {
1291 // Update the geometry
1292 struct retro_system_av_info av_info;
1293 retro_get_system_av_info(&av_info);
1294 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1295 }
1296
35f2b65e 1297 var.value = NULL;
1298 var.key = "picodrive_overclk68k";
1299 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1300 PicoIn.overclockM68k = 0;
1301 if (var.value[0] == '+')
1302 PicoIn.overclockM68k = atoi(var.value + 1);
1303 }
1304
7612bf90 1305#ifdef DRC_SH2
1306 var.value = NULL;
1307 var.key = "picodrive_drc";
1308 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1309 if (strcmp(var.value, "enabled") == 0)
93f9619e 1310 PicoIn.opt |= POPT_EN_DRC;
7612bf90 1311 else
93f9619e 1312 PicoIn.opt &= ~POPT_EN_DRC;
7612bf90 1313 }
1314#endif
1315#ifdef _3DS
1316 if(!ctr_svchack_successful)
93f9619e 1317 PicoIn.opt &= ~POPT_EN_DRC;
7612bf90 1318#endif
1319}
1320
1321void retro_run(void)
1322{
1323 bool updated = false;
1324 int pad, i;
1325
1326 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1327 update_variables();
1328
1329 input_poll_cb();
1330
93f9619e 1331 PicoIn.pad[0] = PicoIn.pad[1] = 0;
7612bf90 1332 for (pad = 0; pad < 2; pad++)
1333 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1334 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
93f9619e 1335 PicoIn.pad[pad] |= retro_pico_map[i];
7612bf90 1336
1337 PicoPatchApply();
1338 PicoFrame();
1339
1340 video_cb((short *)vout_buf + vout_offset,
1341 vout_width, vout_height, vout_width * 2);
1342}
1343
7612bf90 1344void retro_init(void)
1345{
1346 struct retro_log_callback log;
1347 int level;
1348
1349 level = 0;
1350 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1351
1352 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1353 log_cb = log.log;
1354 else
1355 log_cb = NULL;
1356
1357 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1358
1359#ifdef _3DS
1360 ctr_svchack_successful = ctr_svchack_init();
1361#elif defined(VITA)
1362 sceBlock = getVMBlock();
1363#endif
1364
93f9619e 1365 PicoIn.opt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
7612bf90 1366 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1367 | POPT_EN_32X|POPT_EN_PWM
1368 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1369#ifdef __arm__
1370#ifdef _3DS
1371 if (ctr_svchack_successful)
1372#endif
93f9619e 1373 PicoIn.opt |= POPT_EN_DRC;
7612bf90 1374#endif
6311a3ba 1375 PicoIn.sndRate = 44100;
93f9619e 1376 PicoIn.autoRgnOrder = 0x184; // US, EU, JP
7612bf90 1377
1378 vout_width = 320;
1379 vout_height = 240;
1380#ifdef _3DS
1381 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1382#else
1383 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1384#endif
1385
1386 PicoInit();
1387 PicoDrawSetOutFormat(PDF_RGB555, 0);
1388 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1389
6311a3ba 1390 //PicoIn.osdMessage = plat_status_msg_busy_next;
1391 PicoIn.mcdTrayOpen = disk_tray_open;
1392 PicoIn.mcdTrayClose = disk_tray_close;
7612bf90 1393
1394 update_variables();
1395}
1396
1397void retro_deinit(void)
1398{
1399#ifdef _3DS
1400 linearFree(vout_buf);
1401#else
1402 free(vout_buf);
1403#endif
1404 vout_buf = NULL;
1405 PicoExit();
1406}
df925153 1407
1408// vim:shiftwidth=3:ts=3:expandtab
fast MegaDrive/MegaCD/32X emulator