4 * This work is licensed under the terms of the GNU GPLv2 or later.
5 * See the COPYING file in the top-level directory.
12 #include "../libpcsxcore/misc.h"
13 #include "../libpcsxcore/psxcounters.h"
14 #include "../libpcsxcore/psxmem_map.h"
15 #include "../libpcsxcore/new_dynarec/new_dynarec.h"
16 #include "../libpcsxcore/cdrom.h"
17 #include "../libpcsxcore/cdriso.h"
18 #include "../libpcsxcore/cheat.h"
19 #include "../plugins/dfsound/out.h"
23 #include "plugin_lib.h"
27 static retro_video_refresh_t video_cb;
28 static retro_input_poll_t input_poll_cb;
29 static retro_input_state_t input_state_cb;
30 static retro_environment_t environ_cb;
31 static retro_audio_sample_batch_t audio_batch_cb;
33 static void *vout_buf;
34 static int vout_width, vout_height;
35 static int vout_doffs_old, vout_fb_dirty;
36 static bool vout_can_dupe;
38 static int samples_sent, samples_to_send;
39 static int plugins_opened;
40 static int is_pal_mode;
42 /* memory card data */
43 extern char Mcd1Data[MCD_SIZE];
44 extern char McdDisable[2];
46 /* PCSX ReARMed core calls and stuff */
47 int in_type1, in_type2;
48 int in_a1[2] = { 127, 127 }, in_a2[2] = { 127, 127 };
50 int in_enable_vibration;
52 static void init_memcard(char *mcd_data)
57 memset(mcd_data, 0, MCD_SIZE);
59 mcd_data[off++] = 'M';
60 mcd_data[off++] = 'C';
62 mcd_data[off++] = 0x0e;
64 for (i = 0; i < 15; i++) {
65 mcd_data[off++] = 0xa0;
67 mcd_data[off++] = 0xff;
68 mcd_data[off++] = 0xff;
70 mcd_data[off++] = 0xa0;
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;
79 mcd_data[off++] = 0xff;
80 mcd_data[off++] = 0xff;
85 static int vout_open(void)
90 static void vout_set_mode(int w, int h, int raw_w, int raw_h, int bpp)
96 #ifndef FRONTEND_SUPPORTS_RGB565
97 static void convert(void *buf, size_t bytes)
99 unsigned int i, v, *p = buf;
101 for (i = 0; i < bytes / 4; i++) {
103 p[i] = (v & 0x001f001f) | ((v >> 1) & 0x7fe07fe0);
108 static void vout_flip(const void *vram, int stride, int bgr24, int w, int h)
110 unsigned short *dest = vout_buf;
111 const unsigned short *src = vram;
112 int dstride = vout_width, h1 = h;
117 memset(vout_buf, 0, dstride * h * 2);
121 doffs = (vout_height - h) * dstride;
122 doffs += (dstride - w) / 2 & ~1;
123 if (doffs != vout_doffs_old) {
125 memset(vout_buf, 0, dstride * h * 2);
126 vout_doffs_old = doffs;
132 // XXX: could we switch to RETRO_PIXEL_FORMAT_XRGB8888 here?
133 for (; h1-- > 0; dest += dstride, src += stride)
135 bgr888_to_rgb565(dest, src, w * 3);
140 for (; h1-- > 0; dest += dstride, src += stride)
142 bgr555_to_rgb565(dest, src, w * 2);
147 #ifndef FRONTEND_SUPPORTS_RGB565
148 convert(vout_buf, vout_width * vout_height * 2);
151 pl_rearmed_cbs.flip_cnt++;
154 static void vout_close(void)
158 static void *pl_mmap(unsigned int size)
160 return psxMap(0, size, 0, MAP_TAG_VRAM);
163 static void pl_munmap(void *ptr, unsigned int size)
165 psxUnmap(ptr, size, MAP_TAG_VRAM);
168 struct 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,
175 /* from psxcounters */
176 .gpu_hcnt = &hSyncCount,
177 .gpu_frame_count = &frame_counter,
180 void pl_frame_limit(void)
182 /* called once per frame, make psxCpu->Execute() above return */
186 void pl_timing_prepare(int is_pal)
188 is_pal_mode = is_pal;
191 void plat_trigger_vibrate(int is_strong)
195 void pl_update_gun(int *xn, int *yn, int *xres, int *yres, int *in)
200 static int snd_init(void)
205 static void snd_finish(void)
209 static int snd_busy(void)
211 if (samples_to_send > samples_sent)
212 return 0; /* give more samples */
217 static void snd_feed(void *buf, int bytes)
219 audio_batch_cb(buf, bytes / 4);
220 samples_sent += bytes / 4;
223 void out_register_libretro(struct out_driver *drv)
225 drv->name = "libretro";
226 drv->init = snd_init;
227 drv->finish = snd_finish;
228 drv->busy = snd_busy;
229 drv->feed = snd_feed;
233 void retro_set_environment(retro_environment_t cb)
235 static const struct retro_variable vars[] = {
236 { "frameskip", "Frameskip; 0|1|2|3" },
237 { "region", "Region; Auto|NTSC|PAL" },
239 { "neon_interlace_enable", "Enable interlacing mode(s); disabled|enabled" },
241 { "neon_enhancement_enable", "Enhanced resolution (slow); disabled|enabled" },
249 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void*)vars);
252 void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
253 void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
254 void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
255 void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
256 void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
258 unsigned retro_api_version(void)
260 return RETRO_API_VERSION;
263 void retro_set_controller_port_device(unsigned port, unsigned device)
267 void retro_get_system_info(struct retro_system_info *info)
269 memset(info, 0, sizeof(*info));
270 info->library_name = "PCSX-ReARMed";
271 info->library_version = "r19";
272 info->valid_extensions = "bin|cue|img|mdf|pbp|toc|cbn|m3u";
273 info->need_fullpath = true;
276 void retro_get_system_av_info(struct retro_system_av_info *info)
278 memset(info, 0, sizeof(*info));
279 info->timing.fps = is_pal_mode ? 50 : 60;
280 info->timing.sample_rate = 44100;
281 info->geometry.base_width = 320;
282 info->geometry.base_height = 240;
283 info->geometry.max_width = 640;
284 info->geometry.max_height = 512;
285 info->geometry.aspect_ratio = 4.0 / 3.0;
289 size_t retro_serialize_size(void)
291 // it's currently 4380651 bytes, but have some reserved for future
301 static void *save_open(const char *name, const char *mode)
305 if (name == NULL || mode == NULL)
308 fp = malloc(sizeof(*fp));
312 fp->buf = (char *)name;
314 fp->is_write = (mode[0] == 'w' || mode[1] == 'w');
319 static int save_read(void *file, void *buf, u32 len)
321 struct save_fp *fp = file;
322 if (fp == NULL || buf == NULL)
325 memcpy(buf, fp->buf + fp->pos, len);
330 static int save_write(void *file, const void *buf, u32 len)
332 struct save_fp *fp = file;
333 if (fp == NULL || buf == NULL)
336 memcpy(fp->buf + fp->pos, buf, len);
341 static long save_seek(void *file, long offs, int whence)
343 struct save_fp *fp = file;
359 static void save_close(void *file)
361 struct save_fp *fp = file;
362 size_t r_size = retro_serialize_size();
366 if (fp->pos > r_size)
367 SysPrintf("ERROR: save buffer overflow detected\n");
368 else if (fp->is_write && fp->pos < r_size)
369 // make sure we don't save trash in leftover space
370 memset(fp->buf + fp->pos, 0, r_size - fp->pos);
374 bool retro_serialize(void *data, size_t size)
376 int ret = SaveState(data);
377 return ret == 0 ? true : false;
380 bool retro_unserialize(const void *data, size_t size)
382 int ret = LoadState(data);
383 return ret == 0 ? true : false;
387 void retro_cheat_reset(void)
392 void retro_cheat_set(unsigned index, bool enabled, const char *code)
397 // cheat funcs are destructive, need a copy..
398 strncpy(buf, code, sizeof(buf));
399 buf[sizeof(buf) - 1] = 0;
401 if (index < NumCheats)
402 ret = EditCheat(index, "", buf);
404 ret = AddCheat("", buf);
407 SysPrintf("Failed to set cheat %#u\n", index);
408 else if (index < NumCheats)
409 Cheats[index].Enabled = enabled;
412 /* multidisk support */
413 static bool disk_ejected;
414 static unsigned int disk_current_index;
415 static unsigned int disk_count;
416 static struct disks_state {
418 int internal_index; // for multidisk eboots
421 static bool disk_set_eject_state(bool ejected)
424 SetCdOpenCaseTime(ejected ? -1 : (time(NULL) + 2));
427 disk_ejected = ejected;
431 static bool disk_get_eject_state(void)
433 /* can't be controlled by emulated software */
437 static unsigned int disk_get_image_index(void)
439 return disk_current_index;
442 static bool disk_set_image_index(unsigned int index)
444 if (index >= sizeof(disks) / sizeof(disks[0]))
448 CdromLabel[0] = '\0';
450 if (disks[index].fname == NULL) {
451 SysPrintf("missing disk #%u\n", index);
454 // RetroArch specifies "no disk" with index == count,
455 // so don't fail here..
456 disk_current_index = index;
460 SysPrintf("switching to disk %u: \"%s\" #%d\n", index,
461 disks[index].fname, disks[index].internal_index);
463 cdrIsoMultidiskSelect = disks[index].internal_index;
464 set_cd_image(disks[index].fname);
465 if (ReloadCdromPlugin() < 0) {
466 SysPrintf("failed to load cdr plugin\n");
469 if (CDR_open() < 0) {
470 SysPrintf("failed to open cdr plugin\n");
475 SetCdOpenCaseTime(time(NULL) + 2);
479 disk_current_index = index;
483 static unsigned int disk_get_num_images(void)
488 static bool disk_replace_image_index(unsigned index,
489 const struct retro_game_info *info)
494 if (index >= sizeof(disks) / sizeof(disks[0]))
497 old_fname = disks[index].fname;
498 disks[index].fname = NULL;
499 disks[index].internal_index = 0;
502 disks[index].fname = strdup(info->path);
503 if (index == disk_current_index)
504 ret = disk_set_image_index(index);
507 if (old_fname != NULL)
513 static bool disk_add_image_index(void)
522 static struct retro_disk_control_callback disk_control = {
523 .set_eject_state = disk_set_eject_state,
524 .get_eject_state = disk_get_eject_state,
525 .get_image_index = disk_get_image_index,
526 .set_image_index = disk_set_image_index,
527 .get_num_images = disk_get_num_images,
528 .replace_image_index = disk_replace_image_index,
529 .add_image_index = disk_add_image_index,
532 // just in case, maybe a win-rt port in the future?
539 static char base_dir[PATH_MAX];
541 static bool read_m3u(const char *file)
545 FILE *f = fopen(file, "r");
549 while (fgets(line, sizeof(line), f) && disk_count < sizeof(disks) / sizeof(disks[0])) {
552 char *carrige_return = strchr(line, '\r');
554 *carrige_return = '\0';
555 char *newline = strchr(line, '\n');
561 snprintf(name, sizeof(name), "%s%c%s", base_dir, SLASH, line);
562 disks[disk_count++].fname = strdup(name);
567 return (disk_count != 0);
570 static void extract_directory(char *buf, const char *path, size_t size)
573 strncpy(buf, path, size - 1);
574 buf[size - 1] = '\0';
576 base = strrchr(buf, '/');
578 base = strrchr(buf, '\\');
589 bool retro_load_game(const struct retro_game_info *info)
592 bool is_m3u = (strcasestr(info->path, ".m3u") != NULL);
594 #ifdef FRONTEND_SUPPORTS_RGB565
595 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
596 if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
597 SysPrintf("RGB565 supported, using it\n");
601 if (info == NULL || info->path == NULL) {
602 SysPrintf("info->path required\n");
606 if (plugins_opened) {
611 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
612 if (disks[i].fname != NULL) {
613 free(disks[i].fname);
614 disks[i].fname = NULL;
616 disks[i].internal_index = 0;
619 disk_current_index = 0;
620 extract_directory(base_dir, info->path, sizeof(base_dir));
623 if (!read_m3u(info->path)) {
624 SysPrintf("failed to read m3u file\n");
629 disks[0].fname = strdup(info->path);
632 set_cd_image(disks[0].fname);
634 /* have to reload after set_cd_image for correct cdr plugin */
635 if (LoadPlugins() == -1) {
636 SysPrintf("failed to load plugins\n");
643 if (OpenPlugins() == -1) {
644 SysPrintf("failed to open plugins\n");
648 plugin_call_rearmed_cbs();
651 if (CheckCdrom() == -1) {
652 SysPrintf("unsupported/invalid CD image: %s\n", info->path);
658 if (LoadCdrom() == -1) {
659 SysPrintf("could not load CD-ROM!\n");
666 disk_count = cdrIsoMultidiskCount < 8 ? cdrIsoMultidiskCount : 8;
667 for (i = 1; i < sizeof(disks) / sizeof(disks[0]) && i < cdrIsoMultidiskCount; i++) {
668 disks[i].fname = strdup(info->path);
669 disks[i].internal_index = i;
676 bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
681 void retro_unload_game(void)
685 unsigned retro_get_region(void)
687 return is_pal_mode ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
690 void *retro_get_memory_data(unsigned id)
692 if (id == RETRO_MEMORY_SAVE_RAM)
698 size_t retro_get_memory_size(unsigned id)
700 if (id == RETRO_MEMORY_SAVE_RAM)
706 void retro_reset(void)
711 static const unsigned short retro_psx_map[] = {
712 [RETRO_DEVICE_ID_JOYPAD_B] = 1 << DKEY_CROSS,
713 [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << DKEY_SQUARE,
714 [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << DKEY_SELECT,
715 [RETRO_DEVICE_ID_JOYPAD_START] = 1 << DKEY_START,
716 [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << DKEY_UP,
717 [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << DKEY_DOWN,
718 [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << DKEY_LEFT,
719 [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << DKEY_RIGHT,
720 [RETRO_DEVICE_ID_JOYPAD_A] = 1 << DKEY_CIRCLE,
721 [RETRO_DEVICE_ID_JOYPAD_X] = 1 << DKEY_TRIANGLE,
722 [RETRO_DEVICE_ID_JOYPAD_L] = 1 << DKEY_L1,
723 [RETRO_DEVICE_ID_JOYPAD_R] = 1 << DKEY_R1,
724 [RETRO_DEVICE_ID_JOYPAD_L2] = 1 << DKEY_L2,
725 [RETRO_DEVICE_ID_JOYPAD_R2] = 1 << DKEY_R2,
726 [RETRO_DEVICE_ID_JOYPAD_L3] = 1 << DKEY_L3,
727 [RETRO_DEVICE_ID_JOYPAD_R3] = 1 << DKEY_R3,
729 #define RETRO_PSX_MAP_LEN (sizeof(retro_psx_map) / sizeof(retro_psx_map[0]))
731 static void update_variables(void)
733 struct retro_variable var;
736 var.key = "frameskip";
738 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
739 pl_rearmed_cbs.frameskip = atoi(var.value);
744 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
747 if (strcmp(var.value, "Automatic") == 0)
749 else if (strcmp(var.value, "NTSC") == 0)
751 else if (strcmp(var.value, "PAL") == 0)
756 var.key = "neon_interlace_enable";
758 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
760 if (strcmp(var.value, "disabled") == 0)
761 pl_rearmed_cbs.gpu_neon.allow_interlace = 0;
762 else if (strcmp(var.value, "enabled") == 0)
763 pl_rearmed_cbs.gpu_neon.allow_interlace = 1;
768 var.key = "neon_enhancement_enable";
770 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
772 if (strcmp(var.value, "disabled") == 0)
773 pl_rearmed_cbs.gpu_neon.enhancement_enable = 0;
774 else if (strcmp(var.value, "enabled") == 0)
775 pl_rearmed_cbs.gpu_neon.enhancement_enable = 1;
787 bool updated = false;
788 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
792 for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
793 if (input_state_cb(1, RETRO_DEVICE_JOYPAD, 0, i))
794 in_keystate |= retro_psx_map[i];
796 for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
797 if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, i))
798 in_keystate |= retro_psx_map[i];
803 samples_to_send += is_pal_mode ? 44100 / 50 : 44100 / 60;
805 video_cb((vout_fb_dirty || !vout_can_dupe) ? vout_buf : NULL,
806 vout_width, vout_height, vout_width * 2);
810 void retro_init(void)
812 const char *bios[] = { "scph1001", "scph5501", "scph7001" };
818 ret = emu_core_preinit();
819 ret |= emu_core_init();
821 SysPrintf("PCSX init failed.\n");
825 vout_buf = malloc(640 * 512 * 2);
827 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir)
829 snprintf(Config.BiosDir, sizeof(Config.BiosDir), "%s/", dir);
831 for (i = 0; i < sizeof(bios) / sizeof(bios[0]); i++) {
832 snprintf(path, sizeof(path), "%s/%s.bin", dir, bios[i]);
833 f = fopen(path, "r");
835 snprintf(Config.Bios, sizeof(Config.Bios), "%s.bin", bios[i]);
841 SysPrintf("found BIOS file: %s\n", Config.Bios);
846 SysPrintf("no BIOS files found.\n");
847 const char *str = "no BIOS found, expect bugs!";
848 environ_cb(RETRO_ENVIRONMENT_SET_MESSAGE, (void*)&str);
852 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
854 environ_cb(RETRO_ENVIRONMENT_GET_CAN_DUPE, &vout_can_dupe);
855 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
857 /* Set how much slower PSX CPU runs * 100 (so that 200 is 2 times)
858 * we have to do this because cache misses and some IO penalties
859 * are not emulated. Warning: changing this may break compatibility. */
860 #ifdef __ARM_ARCH_7A__
861 cycle_multiplier = 175;
863 cycle_multiplier = 200;
868 init_memcard(Mcd1Data);
870 SaveFuncs.open = save_open;
871 SaveFuncs.read = save_read;
872 SaveFuncs.write = save_write;
873 SaveFuncs.seek = save_seek;
874 SaveFuncs.close = save_close;
879 void retro_deinit(void)