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" },
240 { "neon_enhancement_enable", "Enhanced resolution (slow); disabled|enabled" },
247 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void*)vars);
250 void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
251 void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
252 void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
253 void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
254 void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
256 unsigned retro_api_version(void)
258 return RETRO_API_VERSION;
261 void retro_set_controller_port_device(unsigned port, unsigned device)
265 void retro_get_system_info(struct retro_system_info *info)
267 memset(info, 0, sizeof(*info));
268 info->library_name = "PCSX-ReARMed";
269 info->library_version = "r19";
270 info->valid_extensions = "bin|cue|img|mdf|pbp|toc|cbn|m3u";
271 info->need_fullpath = true;
274 void retro_get_system_av_info(struct retro_system_av_info *info)
276 memset(info, 0, sizeof(*info));
277 info->timing.fps = is_pal_mode ? 50 : 60;
278 info->timing.sample_rate = 44100;
279 info->geometry.base_width = 320;
280 info->geometry.base_height = 240;
281 info->geometry.max_width = 640;
282 info->geometry.max_height = 512;
283 info->geometry.aspect_ratio = 4.0 / 3.0;
287 size_t retro_serialize_size(void)
289 // it's currently 4380651 bytes, but have some reserved for future
299 static void *save_open(const char *name, const char *mode)
303 if (name == NULL || mode == NULL)
306 fp = malloc(sizeof(*fp));
310 fp->buf = (char *)name;
312 fp->is_write = (mode[0] == 'w' || mode[1] == 'w');
317 static int save_read(void *file, void *buf, u32 len)
319 struct save_fp *fp = file;
320 if (fp == NULL || buf == NULL)
323 memcpy(buf, fp->buf + fp->pos, len);
328 static int save_write(void *file, const void *buf, u32 len)
330 struct save_fp *fp = file;
331 if (fp == NULL || buf == NULL)
334 memcpy(fp->buf + fp->pos, buf, len);
339 static long save_seek(void *file, long offs, int whence)
341 struct save_fp *fp = file;
357 static void save_close(void *file)
359 struct save_fp *fp = file;
360 size_t r_size = retro_serialize_size();
364 if (fp->pos > r_size)
365 SysPrintf("ERROR: save buffer overflow detected\n");
366 else if (fp->is_write && fp->pos < r_size)
367 // make sure we don't save trash in leftover space
368 memset(fp->buf + fp->pos, 0, r_size - fp->pos);
372 bool retro_serialize(void *data, size_t size)
374 int ret = SaveState(data);
375 return ret == 0 ? true : false;
378 bool retro_unserialize(const void *data, size_t size)
380 int ret = LoadState(data);
381 return ret == 0 ? true : false;
385 void retro_cheat_reset(void)
390 void retro_cheat_set(unsigned index, bool enabled, const char *code)
395 // cheat funcs are destructive, need a copy..
396 strncpy(buf, code, sizeof(buf));
397 buf[sizeof(buf) - 1] = 0;
399 if (index < NumCheats)
400 ret = EditCheat(index, "", buf);
402 ret = AddCheat("", buf);
405 SysPrintf("Failed to set cheat %#u\n", index);
406 else if (index < NumCheats)
407 Cheats[index].Enabled = enabled;
410 /* multidisk support */
411 static bool disk_ejected;
412 static unsigned int disk_current_index;
413 static unsigned int disk_count;
414 static struct disks_state {
416 int internal_index; // for multidisk eboots
419 static bool disk_set_eject_state(bool ejected)
422 SetCdOpenCaseTime(ejected ? -1 : (time(NULL) + 2));
425 disk_ejected = ejected;
429 static bool disk_get_eject_state(void)
431 /* can't be controlled by emulated software */
435 static unsigned int disk_get_image_index(void)
437 return disk_current_index;
440 static bool disk_set_image_index(unsigned int index)
442 if (index >= sizeof(disks) / sizeof(disks[0]))
446 CdromLabel[0] = '\0';
448 if (disks[index].fname == NULL) {
449 SysPrintf("missing disk #%u\n", index);
452 // RetroArch specifies "no disk" with index == count,
453 // so don't fail here..
454 disk_current_index = index;
458 SysPrintf("switching to disk %u: \"%s\" #%d\n", index,
459 disks[index].fname, disks[index].internal_index);
461 cdrIsoMultidiskSelect = disks[index].internal_index;
462 set_cd_image(disks[index].fname);
463 if (ReloadCdromPlugin() < 0) {
464 SysPrintf("failed to load cdr plugin\n");
467 if (CDR_open() < 0) {
468 SysPrintf("failed to open cdr plugin\n");
473 SetCdOpenCaseTime(time(NULL) + 2);
477 disk_current_index = index;
481 static unsigned int disk_get_num_images(void)
486 static bool disk_replace_image_index(unsigned index,
487 const struct retro_game_info *info)
492 if (index >= sizeof(disks) / sizeof(disks[0]))
495 old_fname = disks[index].fname;
496 disks[index].fname = NULL;
497 disks[index].internal_index = 0;
500 disks[index].fname = strdup(info->path);
501 if (index == disk_current_index)
502 ret = disk_set_image_index(index);
505 if (old_fname != NULL)
511 static bool disk_add_image_index(void)
520 static struct retro_disk_control_callback disk_control = {
521 .set_eject_state = disk_set_eject_state,
522 .get_eject_state = disk_get_eject_state,
523 .get_image_index = disk_get_image_index,
524 .set_image_index = disk_set_image_index,
525 .get_num_images = disk_get_num_images,
526 .replace_image_index = disk_replace_image_index,
527 .add_image_index = disk_add_image_index,
530 // just in case, maybe a win-rt port in the future?
537 static char base_dir[PATH_MAX];
539 static bool read_m3u(const char *file)
543 FILE *f = fopen(file, "r");
547 while (fgets(line, sizeof(line), f) && disk_count < sizeof(disks) / sizeof(disks[0])) {
550 char *carrige_return = strchr(line, '\r');
552 *carrige_return = '\0';
553 char *newline = strchr(line, '\n');
559 snprintf(name, sizeof(name), "%s%c%s", base_dir, SLASH, line);
560 disks[disk_count++].fname = strdup(name);
565 return (disk_count != 0);
568 static void extract_directory(char *buf, const char *path, size_t size)
571 strncpy(buf, path, size - 1);
572 buf[size - 1] = '\0';
574 base = strrchr(buf, '/');
576 base = strrchr(buf, '\\');
587 bool retro_load_game(const struct retro_game_info *info)
590 bool is_m3u = (strcasestr(info->path, ".m3u") != NULL);
592 #ifdef FRONTEND_SUPPORTS_RGB565
593 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
594 if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
595 SysPrintf("RGB565 supported, using it\n");
599 if (info == NULL || info->path == NULL) {
600 SysPrintf("info->path required\n");
604 if (plugins_opened) {
609 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
610 if (disks[i].fname != NULL) {
611 free(disks[i].fname);
612 disks[i].fname = NULL;
614 disks[i].internal_index = 0;
617 disk_current_index = 0;
618 extract_directory(base_dir, info->path, sizeof(base_dir));
621 if (!read_m3u(info->path)) {
622 SysPrintf("failed to read m3u file\n");
627 disks[0].fname = strdup(info->path);
630 set_cd_image(disks[0].fname);
632 /* have to reload after set_cd_image for correct cdr plugin */
633 if (LoadPlugins() == -1) {
634 SysPrintf("failed to load plugins\n");
641 if (OpenPlugins() == -1) {
642 SysPrintf("failed to open plugins\n");
646 plugin_call_rearmed_cbs();
649 if (CheckCdrom() == -1) {
650 SysPrintf("unsupported/invalid CD image: %s\n", info->path);
656 if (LoadCdrom() == -1) {
657 SysPrintf("could not load CD-ROM!\n");
664 disk_count = cdrIsoMultidiskCount < 8 ? cdrIsoMultidiskCount : 8;
665 for (i = 1; i < sizeof(disks) / sizeof(disks[0]) && i < cdrIsoMultidiskCount; i++) {
666 disks[i].fname = strdup(info->path);
667 disks[i].internal_index = i;
674 bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
679 void retro_unload_game(void)
683 unsigned retro_get_region(void)
685 return is_pal_mode ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
688 void *retro_get_memory_data(unsigned id)
690 if (id == RETRO_MEMORY_SAVE_RAM)
696 size_t retro_get_memory_size(unsigned id)
698 if (id == RETRO_MEMORY_SAVE_RAM)
704 void retro_reset(void)
709 static const unsigned short retro_psx_map[] = {
710 [RETRO_DEVICE_ID_JOYPAD_B] = 1 << DKEY_CROSS,
711 [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << DKEY_SQUARE,
712 [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << DKEY_SELECT,
713 [RETRO_DEVICE_ID_JOYPAD_START] = 1 << DKEY_START,
714 [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << DKEY_UP,
715 [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << DKEY_DOWN,
716 [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << DKEY_LEFT,
717 [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << DKEY_RIGHT,
718 [RETRO_DEVICE_ID_JOYPAD_A] = 1 << DKEY_CIRCLE,
719 [RETRO_DEVICE_ID_JOYPAD_X] = 1 << DKEY_TRIANGLE,
720 [RETRO_DEVICE_ID_JOYPAD_L] = 1 << DKEY_L1,
721 [RETRO_DEVICE_ID_JOYPAD_R] = 1 << DKEY_R1,
722 [RETRO_DEVICE_ID_JOYPAD_L2] = 1 << DKEY_L2,
723 [RETRO_DEVICE_ID_JOYPAD_R2] = 1 << DKEY_R2,
724 [RETRO_DEVICE_ID_JOYPAD_L3] = 1 << DKEY_L3,
725 [RETRO_DEVICE_ID_JOYPAD_R3] = 1 << DKEY_R3,
727 #define RETRO_PSX_MAP_LEN (sizeof(retro_psx_map) / sizeof(retro_psx_map[0]))
729 static void update_variables(void)
731 struct retro_variable var;
734 var.key = "frameskip";
736 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
737 pl_rearmed_cbs.frameskip = atoi(var.value);
742 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
745 if (strcmp(var.value, "Automatic") == 0)
747 else if (strcmp(var.value, "NTSC") == 0)
749 else if (strcmp(var.value, "PAL") == 0)
754 var.key = "neon_interlace_enable";
756 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
758 if (strcmp(var.value, "disabled") == 0)
759 pl_rearmed_cbs.gpu_neon.allow_interlace = 0;
760 else if (strcmp(var.value, "enabled") == 0)
761 pl_rearmed_cbs.gpu_neon.allow_interlace = 1;
766 var.key = "neon_enhancement_enable";
768 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
770 if (strcmp(var.value, "disabled") == 0)
771 pl_rearmed_cbs.gpu_neon.enhancement_enable = 0;
772 else if (strcmp(var.value, "enabled") == 0)
773 pl_rearmed_cbs.gpu_neon.enhancement_enable = 1;
784 bool updated = false;
785 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
789 for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
790 if (input_state_cb(1, RETRO_DEVICE_JOYPAD, 0, i))
791 in_keystate |= retro_psx_map[i];
793 for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
794 if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, i))
795 in_keystate |= retro_psx_map[i];
800 samples_to_send += is_pal_mode ? 44100 / 50 : 44100 / 60;
802 video_cb((vout_fb_dirty || !vout_can_dupe) ? vout_buf : NULL,
803 vout_width, vout_height, vout_width * 2);
807 void retro_init(void)
809 const char *bios[] = { "scph1001", "scph5501", "scph7001" };
815 ret = emu_core_preinit();
816 ret |= emu_core_init();
818 SysPrintf("PCSX init failed.\n");
822 vout_buf = malloc(640 * 512 * 2);
824 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir)
826 snprintf(Config.BiosDir, sizeof(Config.BiosDir), "%s/", dir);
828 for (i = 0; i < sizeof(bios) / sizeof(bios[0]); i++) {
829 snprintf(path, sizeof(path), "%s/%s.bin", dir, bios[i]);
830 f = fopen(path, "r");
832 snprintf(Config.Bios, sizeof(Config.Bios), "%s.bin", bios[i]);
838 SysPrintf("found BIOS file: %s\n", Config.Bios);
842 SysPrintf("no BIOS files found.\n");
845 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
847 environ_cb(RETRO_ENVIRONMENT_GET_CAN_DUPE, &vout_can_dupe);
848 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
850 /* Set how much slower PSX CPU runs * 100 (so that 200 is 2 times)
851 * we have to do this because cache misses and some IO penalties
852 * are not emulated. Warning: changing this may break compatibility. */
853 #ifdef __ARM_ARCH_7A__
854 cycle_multiplier = 175;
856 cycle_multiplier = 200;
861 init_memcard(Mcd1Data);
863 SaveFuncs.open = save_open;
864 SaveFuncs.read = save_read;
865 SaveFuncs.write = save_write;
866 SaveFuncs.seek = save_seek;
867 SaveFuncs.close = save_close;
872 void retro_deinit(void)