(QNX) Compilation fix
[pcsx_rearmed.git] / frontend / libretro.c
CommitLineData
38c2028e 1/*
2 * (C) notaz, 2012
3 *
4 * This work is licensed under the terms of the GNU GPLv2 or later.
5 * See the COPYING file in the top-level directory.
6 */
7
8#include <stdio.h>
9#include <stdlib.h>
10#include <string.h>
11
12#include "../libpcsxcore/misc.h"
13#include "../libpcsxcore/psxcounters.h"
87e5b45f 14#include "../libpcsxcore/psxmem_map.h"
38c2028e 15#include "../libpcsxcore/new_dynarec/new_dynarec.h"
23ea11bd 16#include "../libpcsxcore/cdrom.h"
17#include "../libpcsxcore/cdriso.h"
6e921e1d 18#include "../libpcsxcore/cheat.h"
07c13dfd 19#include "../plugins/dfsound/out.h"
c82f907a 20#include "cspace.h"
38c2028e 21#include "main.h"
22#include "plugin.h"
23#include "plugin_lib.h"
24#include "revision.h"
25#include "libretro.h"
26
27static retro_video_refresh_t video_cb;
28static retro_input_poll_t input_poll_cb;
29static retro_input_state_t input_state_cb;
30static retro_environment_t environ_cb;
31static retro_audio_sample_batch_t audio_batch_cb;
32
33static void *vout_buf;
70d56ca3 34static int vout_width, vout_height;
35static int vout_doffs_old, vout_fb_dirty;
1a6164a1 36static bool vout_can_dupe;
70d56ca3 37
38c2028e 38static int samples_sent, samples_to_send;
39static int plugins_opened;
17f84149 40static int is_pal_mode;
38c2028e 41
f9f60dae
TK
42/* memory card data */
43extern char Mcd1Data[MCD_SIZE];
44extern char McdDisable[2];
38c2028e 45
46/* PCSX ReARMed core calls and stuff */
47int in_type1, in_type2;
48int in_a1[2] = { 127, 127 }, in_a2[2] = { 127, 127 };
49int in_keystate;
50int in_enable_vibration;
51
7df396ea
TK
52static void init_memcard(char *mcd_data)
53{
54 unsigned off = 0;
55 unsigned i;
56
57 memset(mcd_data, 0, MCD_SIZE);
58
59 mcd_data[off++] = 'M';
60 mcd_data[off++] = 'C';
61 off += 0x7d;
62 mcd_data[off++] = 0x0e;
63
64 for (i = 0; i < 15; i++) {
65 mcd_data[off++] = 0xa0;
66 off += 0x07;
67 mcd_data[off++] = 0xff;
68 mcd_data[off++] = 0xff;
69 off += 0x75;
70 mcd_data[off++] = 0xa0;
71 }
72
73 for (i = 0; i < 20; i++) {
74 mcd_data[off++] = 0xff;
75 mcd_data[off++] = 0xff;
76 mcd_data[off++] = 0xff;
77 mcd_data[off++] = 0xff;
78 off += 0x04;
79 mcd_data[off++] = 0xff;
80 mcd_data[off++] = 0xff;
81 off += 0x76;
82 }
83}
84
38c2028e 85static int vout_open(void)
86{
87 return 0;
88}
89
e4c83ca6 90static void vout_set_mode(int w, int h, int raw_w, int raw_h, int bpp)
38c2028e 91{
70d56ca3 92 vout_width = w;
93 vout_height = h;
38c2028e 94}
95
cc4f9b70 96#ifndef FRONTEND_SUPPORTS_RGB565
9c59f120 97static void convert(void *buf, size_t bytes)
38c2028e 98{
99 unsigned int i, v, *p = buf;
100
9c59f120 101 for (i = 0; i < bytes / 4; i++) {
38c2028e 102 v = p[i];
103 p[i] = (v & 0x001f001f) | ((v >> 1) & 0x7fe07fe0);
104 }
105}
46aa5b98 106#endif
38c2028e 107
fa56d360 108static void vout_flip(const void *vram, int stride, int bgr24, int w, int h)
38c2028e 109{
fa56d360 110 unsigned short *dest = vout_buf;
111 const unsigned short *src = vram;
70d56ca3 112 int dstride = vout_width, h1 = h;
113 int doffs;
38c2028e 114
fa56d360 115 if (vram == NULL) {
116 // blanking
cc56203b 117 memset(vout_buf, 0, dstride * h * 2);
fa56d360 118 goto out;
119 }
120
70d56ca3 121 doffs = (vout_height - h) * dstride;
122 doffs += (dstride - w) / 2 & ~1;
123 if (doffs != vout_doffs_old) {
124 // clear borders
125 memset(vout_buf, 0, dstride * h * 2);
126 vout_doffs_old = doffs;
127 }
128 dest += doffs;
129
fa56d360 130 if (bgr24)
131 {
132 // XXX: could we switch to RETRO_PIXEL_FORMAT_XRGB8888 here?
133 for (; h1-- > 0; dest += dstride, src += stride)
134 {
135 bgr888_to_rgb565(dest, src, w * 3);
136 }
137 }
138 else
139 {
140 for (; h1-- > 0; dest += dstride, src += stride)
141 {
142 bgr555_to_rgb565(dest, src, w * 2);
143 }
144 }
38c2028e 145
fa56d360 146out:
46aa5b98 147#ifndef FRONTEND_SUPPORTS_RGB565
70d56ca3 148 convert(vout_buf, vout_width * vout_height * 2);
46aa5b98 149#endif
70d56ca3 150 vout_fb_dirty = 1;
fa56d360 151 pl_rearmed_cbs.flip_cnt++;
38c2028e 152}
153
154static void vout_close(void)
155{
156}
157
cc56203b 158static void *pl_mmap(unsigned int size)
159{
87e5b45f 160 return psxMap(0, size, 0, MAP_TAG_VRAM);
cc56203b 161}
162
163static void pl_munmap(void *ptr, unsigned int size)
164{
87e5b45f 165 psxUnmap(ptr, size, MAP_TAG_VRAM);
cc56203b 166}
167
38c2028e 168struct rearmed_cbs pl_rearmed_cbs = {
169 .pl_vout_open = vout_open,
170 .pl_vout_set_mode = vout_set_mode,
171 .pl_vout_flip = vout_flip,
172 .pl_vout_close = vout_close,
cc56203b 173 .mmap = pl_mmap,
174 .munmap = pl_munmap,
38c2028e 175 /* from psxcounters */
176 .gpu_hcnt = &hSyncCount,
177 .gpu_frame_count = &frame_counter,
178};
179
180void pl_frame_limit(void)
181{
182 /* called once per frame, make psxCpu->Execute() above return */
183 stop = 1;
184}
185
186void pl_timing_prepare(int is_pal)
187{
17f84149 188 is_pal_mode = is_pal;
38c2028e 189}
190
191void plat_trigger_vibrate(int is_strong)
192{
193}
194
e4c83ca6 195void pl_update_gun(int *xn, int *yn, int *xres, int *yres, int *in)
38c2028e 196{
197}
198
199/* sound calls */
07c13dfd 200static int snd_init(void)
38c2028e 201{
07c13dfd 202 return 0;
38c2028e 203}
204
07c13dfd 205static void snd_finish(void)
38c2028e 206{
207}
208
07c13dfd 209static int snd_busy(void)
38c2028e 210{
211 if (samples_to_send > samples_sent)
212 return 0; /* give more samples */
213 else
214 return 1;
215}
216
07c13dfd 217static void snd_feed(void *buf, int bytes)
38c2028e 218{
219 audio_batch_cb(buf, bytes / 4);
220 samples_sent += bytes / 4;
221}
222
07c13dfd 223void out_register_libretro(struct out_driver *drv)
224{
225 drv->name = "libretro";
226 drv->init = snd_init;
227 drv->finish = snd_finish;
228 drv->busy = snd_busy;
229 drv->feed = snd_feed;
230}
231
38c2028e 232/* libretro */
233void retro_set_environment(retro_environment_t cb) { environ_cb = cb; }
234void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
235void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
236void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
237void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
238void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
239
240unsigned retro_api_version(void)
241{
242 return RETRO_API_VERSION;
243}
244
245void retro_set_controller_port_device(unsigned port, unsigned device)
246{
247}
248
249void retro_get_system_info(struct retro_system_info *info)
250{
251 memset(info, 0, sizeof(*info));
252 info->library_name = "PCSX-ReARMed";
8045ba8e 253 info->library_version = "r19";
38c2028e 254 info->valid_extensions = "bin|cue|img|mdf|pbp|cbn";
255 info->need_fullpath = true;
256}
257
258void retro_get_system_av_info(struct retro_system_av_info *info)
259{
260 memset(info, 0, sizeof(*info));
17f84149 261 info->timing.fps = is_pal_mode ? 50 : 60;
38c2028e 262 info->timing.sample_rate = 44100;
263 info->geometry.base_width = 320;
264 info->geometry.base_height = 240;
265 info->geometry.max_width = 640;
266 info->geometry.max_height = 512;
267 info->geometry.aspect_ratio = 4.0 / 3.0;
268}
269
6e921e1d 270/* savestates */
38c2028e 271size_t retro_serialize_size(void)
272{
6e921e1d 273 // it's currently 4380651 bytes, but have some reserved for future
274 return 0x430000;
275}
276
277struct save_fp {
278 char *buf;
279 size_t pos;
280 int is_write;
281};
282
283static void *save_open(const char *name, const char *mode)
284{
285 struct save_fp *fp;
286
287 if (name == NULL || mode == NULL)
288 return NULL;
289
290 fp = malloc(sizeof(*fp));
291 if (fp == NULL)
292 return NULL;
293
294 fp->buf = (char *)name;
295 fp->pos = 0;
296 fp->is_write = (mode[0] == 'w' || mode[1] == 'w');
297
298 return fp;
299}
300
301static int save_read(void *file, void *buf, u32 len)
302{
303 struct save_fp *fp = file;
304 if (fp == NULL || buf == NULL)
305 return -1;
306
307 memcpy(buf, fp->buf + fp->pos, len);
308 fp->pos += len;
309 return len;
310}
311
312static int save_write(void *file, const void *buf, u32 len)
313{
314 struct save_fp *fp = file;
315 if (fp == NULL || buf == NULL)
316 return -1;
317
318 memcpy(fp->buf + fp->pos, buf, len);
319 fp->pos += len;
320 return len;
321}
322
323static long save_seek(void *file, long offs, int whence)
324{
325 struct save_fp *fp = file;
326 if (fp == NULL)
327 return -1;
328
329 switch (whence) {
330 case SEEK_CUR:
331 fp->pos += offs;
332 return fp->pos;
333 case SEEK_SET:
334 fp->pos = offs;
335 return fp->pos;
336 default:
337 return -1;
338 }
339}
340
341static void save_close(void *file)
342{
343 struct save_fp *fp = file;
344 size_t r_size = retro_serialize_size();
345 if (fp == NULL)
346 return;
347
348 if (fp->pos > r_size)
349 SysPrintf("ERROR: save buffer overflow detected\n");
350 else if (fp->is_write && fp->pos < r_size)
351 // make sure we don't save trash in leftover space
352 memset(fp->buf + fp->pos, 0, r_size - fp->pos);
353 free(fp);
38c2028e 354}
355
356bool retro_serialize(void *data, size_t size)
357{
6e921e1d 358 int ret = SaveState(data);
359 return ret == 0 ? true : false;
38c2028e 360}
361
362bool retro_unserialize(const void *data, size_t size)
363{
6e921e1d 364 int ret = LoadState(data);
365 return ret == 0 ? true : false;
38c2028e 366}
367
23ea11bd 368/* cheats */
38c2028e 369void retro_cheat_reset(void)
370{
6e921e1d 371 ClearAllCheats();
38c2028e 372}
373
374void retro_cheat_set(unsigned index, bool enabled, const char *code)
375{
6e921e1d 376 char buf[256];
377 int ret;
378
379 // cheat funcs are destructive, need a copy..
380 strncpy(buf, code, sizeof(buf));
381 buf[sizeof(buf) - 1] = 0;
382
383 if (index < NumCheats)
384 ret = EditCheat(index, "", buf);
385 else
386 ret = AddCheat("", buf);
387
388 if (ret != 0)
389 SysPrintf("Failed to set cheat %#u\n", index);
390 else if (index < NumCheats)
391 Cheats[index].Enabled = enabled;
38c2028e 392}
393
23ea11bd 394/* multidisk support */
395static bool disk_ejected;
396static unsigned int disk_current_index;
397static struct disks_state {
398 char *fname;
399 int internal_index; // for multidisk eboots
400} disks[8];
401
402static bool disk_set_eject_state(bool ejected)
403{
404 // weird PCSX API..
405 SetCdOpenCaseTime(ejected ? -1 : (time(NULL) + 2));
406 LidInterrupt();
407
408 disk_ejected = ejected;
409 return true;
410}
411
412static bool disk_get_eject_state(void)
413{
414 /* can't be controlled by emulated software */
415 return disk_ejected;
416}
417
418static unsigned int disk_get_image_index(void)
419{
420 return disk_current_index;
421}
422
423static bool disk_set_image_index(unsigned int index)
424{
425 if (index >= sizeof(disks) / sizeof(disks[0]))
426 return false;
427
428 CdromId[0] = '\0';
429 CdromLabel[0] = '\0';
430
431 if (disks[index].fname == NULL) {
432 SysPrintf("missing disk #%u\n", index);
433 CDR_shutdown();
434
435 // RetroArch specifies "no disk" with index == count,
436 // so don't fail here..
437 disk_current_index = index;
438 return true;
439 }
440
441 SysPrintf("switching to disk %u: \"%s\" #%d\n", index,
442 disks[index].fname, disks[index].internal_index);
443
444 cdrIsoMultidiskSelect = disks[index].internal_index;
445 set_cd_image(disks[index].fname);
446 if (ReloadCdromPlugin() < 0) {
447 SysPrintf("failed to load cdr plugin\n");
448 return false;
449 }
450 if (CDR_open() < 0) {
451 SysPrintf("failed to open cdr plugin\n");
452 return false;
453 }
454
455 if (!disk_ejected) {
456 SetCdOpenCaseTime(time(NULL) + 2);
457 LidInterrupt();
458 }
459
460 disk_current_index = index;
461 return true;
462}
463
464static unsigned int disk_get_num_images(void)
465{
466 unsigned int count = 0;
467 size_t i;
468
469 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++)
470 if (disks[i].fname != NULL)
471 count++;
472
473 return count;
474}
475
476static bool disk_replace_image_index(unsigned index,
477 const struct retro_game_info *info)
478{
479 char *old_fname;
480 bool ret = true;
481
482 if (index >= sizeof(disks) / sizeof(disks[0]))
483 return false;
484
485 old_fname = disks[index].fname;
486 disks[index].fname = NULL;
487 disks[index].internal_index = 0;
488
489 if (info != NULL) {
490 disks[index].fname = strdup(info->path);
491 if (index == disk_current_index)
492 ret = disk_set_image_index(index);
493 }
494
495 if (old_fname != NULL)
496 free(old_fname);
497
498 return ret;
499}
500
501static bool disk_add_image_index(void)
502{
503 // TODO??
504 return true;
505}
506
507static struct retro_disk_control_callback disk_control = {
508 .set_eject_state = disk_set_eject_state,
509 .get_eject_state = disk_get_eject_state,
510 .get_image_index = disk_get_image_index,
511 .set_image_index = disk_set_image_index,
512 .get_num_images = disk_get_num_images,
513 .replace_image_index = disk_replace_image_index,
514 .add_image_index = disk_add_image_index,
515};
516
38c2028e 517bool retro_load_game(const struct retro_game_info *info)
518{
23ea11bd 519 size_t i;
46aa5b98 520#ifdef FRONTEND_SUPPORTS_RGB565
c19aba43 521 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
9f766dbe 522 if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
f29fbd53 523 SysPrintf("RGB565 supported, using it\n");
c19aba43 524 }
46aa5b98 525#endif
c19aba43 526
23ea11bd 527 if (info == NULL || info->path == NULL) {
528 SysPrintf("info->path required\n");
529 return false;
530 }
531
38c2028e 532 if (plugins_opened) {
533 ClosePlugins();
534 plugins_opened = 0;
535 }
536
23ea11bd 537 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
538 if (disks[i].fname != NULL) {
539 free(disks[i].fname);
540 disks[i].fname = NULL;
541 }
542 disks[i].internal_index = 0;
543 }
544
545 disk_current_index = 0;
546 disks[0].fname = strdup(info->path);
547
548 set_cd_image(disks[0].fname);
38c2028e 549
550 /* have to reload after set_cd_image for correct cdr plugin */
551 if (LoadPlugins() == -1) {
f29fbd53 552 SysPrintf("failed to load plugins\n");
38c2028e 553 return false;
554 }
555
556 plugins_opened = 1;
557 NetOpened = 0;
558
559 if (OpenPlugins() == -1) {
f29fbd53 560 SysPrintf("failed to open plugins\n");
38c2028e 561 return false;
562 }
563
564 plugin_call_rearmed_cbs();
565
566 Config.PsxAuto = 1;
567 if (CheckCdrom() == -1) {
f29fbd53 568 SysPrintf("unsupported/invalid CD image: %s\n", info->path);
38c2028e 569 return false;
570 }
571
572 SysReset();
573
574 if (LoadCdrom() == -1) {
f29fbd53 575 SysPrintf("could not load CD-ROM!\n");
38c2028e 576 return false;
577 }
79f216e3 578 emu_on_new_cd(0);
38c2028e 579
23ea11bd 580 // multidisk images
581 for (i = 1; i < sizeof(disks) / sizeof(disks[0]) && i < cdrIsoMultidiskCount; i++) {
582 disks[i].fname = strdup(info->path);
583 disks[i].internal_index = i;
584 }
585
38c2028e 586 return true;
587}
588
589bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
590{
591 return false;
592}
593
594void retro_unload_game(void)
595{
596}
597
598unsigned retro_get_region(void)
599{
17f84149 600 return is_pal_mode ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
38c2028e 601}
602
603void *retro_get_memory_data(unsigned id)
604{
f9f60dae 605 return Mcd1Data;
38c2028e 606}
607
608size_t retro_get_memory_size(unsigned id)
609{
f9f60dae 610 return MCD_SIZE;
38c2028e 611}
612
613void retro_reset(void)
614{
615 SysReset();
616}
617
618static const unsigned short retro_psx_map[] = {
619 [RETRO_DEVICE_ID_JOYPAD_B] = 1 << DKEY_CROSS,
620 [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << DKEY_SQUARE,
621 [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << DKEY_SELECT,
622 [RETRO_DEVICE_ID_JOYPAD_START] = 1 << DKEY_START,
623 [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << DKEY_UP,
624 [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << DKEY_DOWN,
625 [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << DKEY_LEFT,
626 [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << DKEY_RIGHT,
627 [RETRO_DEVICE_ID_JOYPAD_A] = 1 << DKEY_CIRCLE,
628 [RETRO_DEVICE_ID_JOYPAD_X] = 1 << DKEY_TRIANGLE,
629 [RETRO_DEVICE_ID_JOYPAD_L] = 1 << DKEY_L1,
630 [RETRO_DEVICE_ID_JOYPAD_R] = 1 << DKEY_R1,
631 [RETRO_DEVICE_ID_JOYPAD_L2] = 1 << DKEY_L2,
632 [RETRO_DEVICE_ID_JOYPAD_R2] = 1 << DKEY_R2,
633 [RETRO_DEVICE_ID_JOYPAD_L3] = 1 << DKEY_L3,
634 [RETRO_DEVICE_ID_JOYPAD_R3] = 1 << DKEY_R3,
635};
636#define RETRO_PSX_MAP_LEN (sizeof(retro_psx_map) / sizeof(retro_psx_map[0]))
637
638void retro_run(void)
639{
640 int i;
641
642 input_poll_cb();
643 in_keystate = 0;
644 for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
645 if (input_state_cb(1, RETRO_DEVICE_JOYPAD, 0, i))
646 in_keystate |= retro_psx_map[i];
647 in_keystate <<= 16;
648 for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
649 if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, i))
650 in_keystate |= retro_psx_map[i];
651
652 stop = 0;
653 psxCpu->Execute();
654
17f84149 655 samples_to_send += is_pal_mode ? 44100 / 50 : 44100 / 60;
e2bdb933 656
1a6164a1 657 video_cb((vout_fb_dirty || !vout_can_dupe) ? vout_buf : NULL,
658 vout_width, vout_height, vout_width * 2);
70d56ca3 659 vout_fb_dirty = 0;
38c2028e 660}
661
662void retro_init(void)
663{
664 const char *bios[] = { "scph1001", "scph5501", "scph7001" };
665 const char *dir;
666 char path[256];
667 FILE *f = NULL;
668 int i, ret, level;
669
670 ret = emu_core_preinit();
671 ret |= emu_core_init();
672 if (ret != 0) {
f29fbd53 673 SysPrintf("PCSX init failed.\n");
38c2028e 674 exit(1);
675 }
676
677 vout_buf = malloc(640 * 512 * 2);
678
679 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir)
680 {
681 snprintf(Config.BiosDir, sizeof(Config.BiosDir), "%s/", dir);
682
683 for (i = 0; i < sizeof(bios) / sizeof(bios[0]); i++) {
684 snprintf(path, sizeof(path), "%s/%s.bin", dir, bios[i]);
685 f = fopen(path, "r");
686 if (f != NULL) {
687 snprintf(Config.Bios, sizeof(Config.Bios), "%s.bin", bios[i]);
688 break;
689 }
690 }
691 }
692 if (f != NULL) {
f29fbd53 693 SysPrintf("found BIOS file: %s\n", Config.Bios);
38c2028e 694 fclose(f);
695 }
696 else
f29fbd53 697 SysPrintf("no BIOS files found.\n");
38c2028e 698
699 level = 1;
700 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
f9f60dae 701
1a6164a1 702 environ_cb(RETRO_ENVIRONMENT_GET_CAN_DUPE, &vout_can_dupe);
23ea11bd 703 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1a6164a1 704
5ca2ec64 705 /* Set how much slower PSX CPU runs * 100 (so that 200 is 2 times)
706 * we have to do this because cache misses and some IO penalties
707 * are not emulated. Warning: changing this may break compatibility. */
708#ifdef __ARM_ARCH_7A__
709 cycle_multiplier = 175;
710#else
711 cycle_multiplier = 200;
712#endif
713
f9f60dae
TK
714 McdDisable[0] = 0;
715 McdDisable[1] = 1;
7df396ea 716 init_memcard(Mcd1Data);
6e921e1d 717
718 SaveFuncs.open = save_open;
719 SaveFuncs.read = save_read;
720 SaveFuncs.write = save_write;
721 SaveFuncs.seek = save_seek;
722 SaveFuncs.close = save_close;
38c2028e 723}
724
725void retro_deinit(void)
726{
727 SysClose();
728 free(vout_buf);
729 vout_buf = NULL;
730}