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" },
238 { "neon_enhancement_enable", "Enhanced resolution (slow); disabled|enabled" },
245 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void*)vars);
248 void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
249 void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
250 void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
251 void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
252 void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
254 unsigned retro_api_version(void)
256 return RETRO_API_VERSION;
259 void retro_set_controller_port_device(unsigned port, unsigned device)
263 void retro_get_system_info(struct retro_system_info *info)
265 memset(info, 0, sizeof(*info));
266 info->library_name = "PCSX-ReARMed";
267 info->library_version = "r19";
268 info->valid_extensions = "bin|cue|img|mdf|pbp|toc|cbn|m3u";
269 info->need_fullpath = true;
272 void retro_get_system_av_info(struct retro_system_av_info *info)
274 memset(info, 0, sizeof(*info));
275 info->timing.fps = is_pal_mode ? 50 : 60;
276 info->timing.sample_rate = 44100;
277 info->geometry.base_width = 320;
278 info->geometry.base_height = 240;
279 info->geometry.max_width = 640;
280 info->geometry.max_height = 512;
281 info->geometry.aspect_ratio = 4.0 / 3.0;
285 size_t retro_serialize_size(void)
287 // it's currently 4380651 bytes, but have some reserved for future
297 static void *save_open(const char *name, const char *mode)
301 if (name == NULL || mode == NULL)
304 fp = malloc(sizeof(*fp));
308 fp->buf = (char *)name;
310 fp->is_write = (mode[0] == 'w' || mode[1] == 'w');
315 static int save_read(void *file, void *buf, u32 len)
317 struct save_fp *fp = file;
318 if (fp == NULL || buf == NULL)
321 memcpy(buf, fp->buf + fp->pos, len);
326 static int save_write(void *file, const void *buf, u32 len)
328 struct save_fp *fp = file;
329 if (fp == NULL || buf == NULL)
332 memcpy(fp->buf + fp->pos, buf, len);
337 static long save_seek(void *file, long offs, int whence)
339 struct save_fp *fp = file;
355 static void save_close(void *file)
357 struct save_fp *fp = file;
358 size_t r_size = retro_serialize_size();
362 if (fp->pos > r_size)
363 SysPrintf("ERROR: save buffer overflow detected\n");
364 else if (fp->is_write && fp->pos < r_size)
365 // make sure we don't save trash in leftover space
366 memset(fp->buf + fp->pos, 0, r_size - fp->pos);
370 bool retro_serialize(void *data, size_t size)
372 int ret = SaveState(data);
373 return ret == 0 ? true : false;
376 bool retro_unserialize(const void *data, size_t size)
378 int ret = LoadState(data);
379 return ret == 0 ? true : false;
383 void retro_cheat_reset(void)
388 void retro_cheat_set(unsigned index, bool enabled, const char *code)
393 // cheat funcs are destructive, need a copy..
394 strncpy(buf, code, sizeof(buf));
395 buf[sizeof(buf) - 1] = 0;
397 if (index < NumCheats)
398 ret = EditCheat(index, "", buf);
400 ret = AddCheat("", buf);
403 SysPrintf("Failed to set cheat %#u\n", index);
404 else if (index < NumCheats)
405 Cheats[index].Enabled = enabled;
408 /* multidisk support */
409 static bool disk_ejected;
410 static unsigned int disk_current_index;
411 static unsigned int disk_count;
412 static struct disks_state {
414 int internal_index; // for multidisk eboots
417 static bool disk_set_eject_state(bool ejected)
420 SetCdOpenCaseTime(ejected ? -1 : (time(NULL) + 2));
423 disk_ejected = ejected;
427 static bool disk_get_eject_state(void)
429 /* can't be controlled by emulated software */
433 static unsigned int disk_get_image_index(void)
435 return disk_current_index;
438 static bool disk_set_image_index(unsigned int index)
440 if (index >= sizeof(disks) / sizeof(disks[0]))
444 CdromLabel[0] = '\0';
446 if (disks[index].fname == NULL) {
447 SysPrintf("missing disk #%u\n", index);
450 // RetroArch specifies "no disk" with index == count,
451 // so don't fail here..
452 disk_current_index = index;
456 SysPrintf("switching to disk %u: \"%s\" #%d\n", index,
457 disks[index].fname, disks[index].internal_index);
459 cdrIsoMultidiskSelect = disks[index].internal_index;
460 set_cd_image(disks[index].fname);
461 if (ReloadCdromPlugin() < 0) {
462 SysPrintf("failed to load cdr plugin\n");
465 if (CDR_open() < 0) {
466 SysPrintf("failed to open cdr plugin\n");
471 SetCdOpenCaseTime(time(NULL) + 2);
475 disk_current_index = index;
479 static unsigned int disk_get_num_images(void)
484 static bool disk_replace_image_index(unsigned index,
485 const struct retro_game_info *info)
490 if (index >= sizeof(disks) / sizeof(disks[0]))
493 old_fname = disks[index].fname;
494 disks[index].fname = NULL;
495 disks[index].internal_index = 0;
498 disks[index].fname = strdup(info->path);
499 if (index == disk_current_index)
500 ret = disk_set_image_index(index);
503 if (old_fname != NULL)
509 static bool disk_add_image_index(void)
518 static struct retro_disk_control_callback disk_control = {
519 .set_eject_state = disk_set_eject_state,
520 .get_eject_state = disk_get_eject_state,
521 .get_image_index = disk_get_image_index,
522 .set_image_index = disk_set_image_index,
523 .get_num_images = disk_get_num_images,
524 .replace_image_index = disk_replace_image_index,
525 .add_image_index = disk_add_image_index,
528 // just in case, maybe a win-rt port in the future?
535 static char base_dir[PATH_MAX];
537 static bool read_m3u(const char *file)
541 FILE *f = fopen(file, "r");
545 while (fgets(line, sizeof(line), f) && disk_count < sizeof(disks) / sizeof(disks[0])) {
548 char *carrige_return = strchr(line, '\r');
550 *carrige_return = '\0';
551 char *newline = strchr(line, '\n');
557 snprintf(name, sizeof(name), "%s%c%s", base_dir, SLASH, line);
558 disks[disk_count++].fname = strdup(name);
563 return (disk_count != 0);
566 static void extract_directory(char *buf, const char *path, size_t size)
569 strncpy(buf, path, size - 1);
570 buf[size - 1] = '\0';
572 base = strrchr(buf, '/');
574 base = strrchr(buf, '\\');
585 bool retro_load_game(const struct retro_game_info *info)
588 bool is_m3u = (strcasestr(info->path, ".m3u") != NULL);
590 #ifdef FRONTEND_SUPPORTS_RGB565
591 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
592 if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
593 SysPrintf("RGB565 supported, using it\n");
597 if (info == NULL || info->path == NULL) {
598 SysPrintf("info->path required\n");
602 if (plugins_opened) {
607 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
608 if (disks[i].fname != NULL) {
609 free(disks[i].fname);
610 disks[i].fname = NULL;
612 disks[i].internal_index = 0;
615 disk_current_index = 0;
616 extract_directory(base_dir, info->path, sizeof(base_dir));
619 if (!read_m3u(info->path)) {
620 SysPrintf("failed to read m3u file\n");
625 disks[0].fname = strdup(info->path);
628 set_cd_image(disks[0].fname);
630 /* have to reload after set_cd_image for correct cdr plugin */
631 if (LoadPlugins() == -1) {
632 SysPrintf("failed to load plugins\n");
639 if (OpenPlugins() == -1) {
640 SysPrintf("failed to open plugins\n");
644 plugin_call_rearmed_cbs();
647 if (CheckCdrom() == -1) {
648 SysPrintf("unsupported/invalid CD image: %s\n", info->path);
654 if (LoadCdrom() == -1) {
655 SysPrintf("could not load CD-ROM!\n");
662 disk_count = cdrIsoMultidiskCount < 8 ? cdrIsoMultidiskCount : 8;
663 for (i = 1; i < sizeof(disks) / sizeof(disks[0]) && i < cdrIsoMultidiskCount; i++) {
664 disks[i].fname = strdup(info->path);
665 disks[i].internal_index = i;
672 bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
677 void retro_unload_game(void)
681 unsigned retro_get_region(void)
683 return is_pal_mode ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
686 void *retro_get_memory_data(unsigned id)
688 if (id == RETRO_MEMORY_SAVE_RAM)
694 size_t retro_get_memory_size(unsigned id)
696 if (id == RETRO_MEMORY_SAVE_RAM)
702 void retro_reset(void)
707 static const unsigned short retro_psx_map[] = {
708 [RETRO_DEVICE_ID_JOYPAD_B] = 1 << DKEY_CROSS,
709 [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << DKEY_SQUARE,
710 [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << DKEY_SELECT,
711 [RETRO_DEVICE_ID_JOYPAD_START] = 1 << DKEY_START,
712 [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << DKEY_UP,
713 [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << DKEY_DOWN,
714 [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << DKEY_LEFT,
715 [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << DKEY_RIGHT,
716 [RETRO_DEVICE_ID_JOYPAD_A] = 1 << DKEY_CIRCLE,
717 [RETRO_DEVICE_ID_JOYPAD_X] = 1 << DKEY_TRIANGLE,
718 [RETRO_DEVICE_ID_JOYPAD_L] = 1 << DKEY_L1,
719 [RETRO_DEVICE_ID_JOYPAD_R] = 1 << DKEY_R1,
720 [RETRO_DEVICE_ID_JOYPAD_L2] = 1 << DKEY_L2,
721 [RETRO_DEVICE_ID_JOYPAD_R2] = 1 << DKEY_R2,
722 [RETRO_DEVICE_ID_JOYPAD_L3] = 1 << DKEY_L3,
723 [RETRO_DEVICE_ID_JOYPAD_R3] = 1 << DKEY_R3,
725 #define RETRO_PSX_MAP_LEN (sizeof(retro_psx_map) / sizeof(retro_psx_map[0]))
727 static void update_variables(void)
729 struct retro_variable var;
732 var.key = "frameskip";
734 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
735 pl_rearmed_cbs.frameskip = atoi(var.value);
738 var.key = "neon_enhancement_enable";
740 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
742 if (strcmp(var.value, "disabled") == 0)
743 pl_rearmed_cbs.gpu_neon.enhancement_enable = 0;
744 else if (strcmp(var.value, "enabled") == 0)
745 pl_rearmed_cbs.gpu_neon.enhancement_enable = 1;
756 bool updated = false;
757 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
761 for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
762 if (input_state_cb(1, RETRO_DEVICE_JOYPAD, 0, i))
763 in_keystate |= retro_psx_map[i];
765 for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
766 if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, i))
767 in_keystate |= retro_psx_map[i];
772 samples_to_send += is_pal_mode ? 44100 / 50 : 44100 / 60;
774 video_cb((vout_fb_dirty || !vout_can_dupe) ? vout_buf : NULL,
775 vout_width, vout_height, vout_width * 2);
779 void retro_init(void)
781 const char *bios[] = { "scph1001", "scph5501", "scph7001" };
787 ret = emu_core_preinit();
788 ret |= emu_core_init();
790 SysPrintf("PCSX init failed.\n");
794 vout_buf = malloc(640 * 512 * 2);
796 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir)
798 snprintf(Config.BiosDir, sizeof(Config.BiosDir), "%s/", dir);
800 for (i = 0; i < sizeof(bios) / sizeof(bios[0]); i++) {
801 snprintf(path, sizeof(path), "%s/%s.bin", dir, bios[i]);
802 f = fopen(path, "r");
804 snprintf(Config.Bios, sizeof(Config.Bios), "%s.bin", bios[i]);
810 SysPrintf("found BIOS file: %s\n", Config.Bios);
814 SysPrintf("no BIOS files found.\n");
817 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
819 environ_cb(RETRO_ENVIRONMENT_GET_CAN_DUPE, &vout_can_dupe);
820 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
822 /* Set how much slower PSX CPU runs * 100 (so that 200 is 2 times)
823 * we have to do this because cache misses and some IO penalties
824 * are not emulated. Warning: changing this may break compatibility. */
825 #ifdef __ARM_ARCH_7A__
826 cycle_multiplier = 175;
828 cycle_multiplier = 200;
833 init_memcard(Mcd1Data);
835 SaveFuncs.open = save_open;
836 SaveFuncs.read = save_read;
837 SaveFuncs.write = save_write;
838 SaveFuncs.seek = save_seek;
839 SaveFuncs.close = save_close;
844 void retro_deinit(void)