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/cheat.h"
17 #include "../plugins/dfsound/out.h"
18 #include "../plugins/gpulib/cspace.h"
21 #include "plugin_lib.h"
25 static retro_video_refresh_t video_cb;
26 static retro_input_poll_t input_poll_cb;
27 static retro_input_state_t input_state_cb;
28 static retro_environment_t environ_cb;
29 static retro_audio_sample_batch_t audio_batch_cb;
31 static void *vout_buf;
32 static int vout_width, vout_height;
33 static int vout_doffs_old, vout_fb_dirty;
34 static bool vout_can_dupe;
36 static int samples_sent, samples_to_send;
37 static int plugins_opened;
39 /* memory card data */
40 extern char Mcd1Data[MCD_SIZE];
41 extern char McdDisable[2];
43 /* PCSX ReARMed core calls and stuff */
44 int in_type1, in_type2;
45 int in_a1[2] = { 127, 127 }, in_a2[2] = { 127, 127 };
47 int in_enable_vibration;
49 static void init_memcard(char *mcd_data)
54 memset(mcd_data, 0, MCD_SIZE);
56 mcd_data[off++] = 'M';
57 mcd_data[off++] = 'C';
59 mcd_data[off++] = 0x0e;
61 for (i = 0; i < 15; i++) {
62 mcd_data[off++] = 0xa0;
64 mcd_data[off++] = 0xff;
65 mcd_data[off++] = 0xff;
67 mcd_data[off++] = 0xa0;
70 for (i = 0; i < 20; i++) {
71 mcd_data[off++] = 0xff;
72 mcd_data[off++] = 0xff;
73 mcd_data[off++] = 0xff;
74 mcd_data[off++] = 0xff;
76 mcd_data[off++] = 0xff;
77 mcd_data[off++] = 0xff;
82 static int vout_open(void)
87 static void vout_set_mode(int w, int h, int raw_w, int raw_h, int bpp)
93 #ifndef FRONTEND_SUPPORTS_RGB565
94 static void convert(void *buf, size_t bytes)
96 unsigned int i, v, *p = buf;
98 for (i = 0; i < bytes / 4; i++) {
100 p[i] = (v & 0x001f001f) | ((v >> 1) & 0x7fe07fe0);
105 static void vout_flip(const void *vram, int stride, int bgr24, int w, int h)
107 unsigned short *dest = vout_buf;
108 const unsigned short *src = vram;
109 int dstride = vout_width, h1 = h;
114 memset(vout_buf, 0, dstride * h * 2);
118 doffs = (vout_height - h) * dstride;
119 doffs += (dstride - w) / 2 & ~1;
120 if (doffs != vout_doffs_old) {
122 memset(vout_buf, 0, dstride * h * 2);
123 vout_doffs_old = doffs;
129 // XXX: could we switch to RETRO_PIXEL_FORMAT_XRGB8888 here?
130 for (; h1-- > 0; dest += dstride, src += stride)
132 bgr888_to_rgb565(dest, src, w * 3);
137 for (; h1-- > 0; dest += dstride, src += stride)
139 bgr555_to_rgb565(dest, src, w * 2);
144 #ifndef FRONTEND_SUPPORTS_RGB565
145 convert(vout_buf, vout_width * vout_height * 2);
148 pl_rearmed_cbs.flip_cnt++;
151 static void vout_close(void)
155 static void *pl_mmap(unsigned int size)
157 return psxMap(0, size, 0, MAP_TAG_VRAM);
160 static void pl_munmap(void *ptr, unsigned int size)
162 psxUnmap(ptr, size, MAP_TAG_VRAM);
165 struct rearmed_cbs pl_rearmed_cbs = {
166 .pl_vout_open = vout_open,
167 .pl_vout_set_mode = vout_set_mode,
168 .pl_vout_flip = vout_flip,
169 .pl_vout_close = vout_close,
172 /* from psxcounters */
173 .gpu_hcnt = &hSyncCount,
174 .gpu_frame_count = &frame_counter,
177 void pl_frame_limit(void)
179 /* called once per frame, make psxCpu->Execute() above return */
183 void pl_timing_prepare(int is_pal)
187 void plat_trigger_vibrate(int is_strong)
191 void pl_update_gun(int *xn, int *yn, int *xres, int *yres, int *in)
196 static int snd_init(void)
201 static void snd_finish(void)
205 static int snd_busy(void)
207 if (samples_to_send > samples_sent)
208 return 0; /* give more samples */
213 static void snd_feed(void *buf, int bytes)
215 audio_batch_cb(buf, bytes / 4);
216 samples_sent += bytes / 4;
219 void out_register_libretro(struct out_driver *drv)
221 drv->name = "libretro";
222 drv->init = snd_init;
223 drv->finish = snd_finish;
224 drv->busy = snd_busy;
225 drv->feed = snd_feed;
229 void retro_set_environment(retro_environment_t cb) { environ_cb = cb; }
230 void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
231 void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
232 void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
233 void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
234 void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
236 unsigned retro_api_version(void)
238 return RETRO_API_VERSION;
241 void retro_set_controller_port_device(unsigned port, unsigned device)
245 void retro_get_system_info(struct retro_system_info *info)
247 memset(info, 0, sizeof(*info));
248 info->library_name = "PCSX-ReARMed";
249 info->library_version = REV;
250 info->valid_extensions = "bin|cue|img|mdf|pbp|cbn";
251 info->need_fullpath = true;
254 void retro_get_system_av_info(struct retro_system_av_info *info)
256 memset(info, 0, sizeof(*info));
257 info->timing.fps = 60;
258 info->timing.sample_rate = 44100;
259 info->geometry.base_width = 320;
260 info->geometry.base_height = 240;
261 info->geometry.max_width = 640;
262 info->geometry.max_height = 512;
263 info->geometry.aspect_ratio = 4.0 / 3.0;
267 size_t retro_serialize_size(void)
269 // it's currently 4380651 bytes, but have some reserved for future
279 static void *save_open(const char *name, const char *mode)
283 if (name == NULL || mode == NULL)
286 fp = malloc(sizeof(*fp));
290 fp->buf = (char *)name;
292 fp->is_write = (mode[0] == 'w' || mode[1] == 'w');
297 static int save_read(void *file, void *buf, u32 len)
299 struct save_fp *fp = file;
300 if (fp == NULL || buf == NULL)
303 memcpy(buf, fp->buf + fp->pos, len);
308 static int save_write(void *file, const void *buf, u32 len)
310 struct save_fp *fp = file;
311 if (fp == NULL || buf == NULL)
314 memcpy(fp->buf + fp->pos, buf, len);
319 static long save_seek(void *file, long offs, int whence)
321 struct save_fp *fp = file;
337 static void save_close(void *file)
339 struct save_fp *fp = file;
340 size_t r_size = retro_serialize_size();
344 if (fp->pos > r_size)
345 SysPrintf("ERROR: save buffer overflow detected\n");
346 else if (fp->is_write && fp->pos < r_size)
347 // make sure we don't save trash in leftover space
348 memset(fp->buf + fp->pos, 0, r_size - fp->pos);
352 bool retro_serialize(void *data, size_t size)
354 int ret = SaveState(data);
355 return ret == 0 ? true : false;
358 bool retro_unserialize(const void *data, size_t size)
360 int ret = LoadState(data);
361 return ret == 0 ? true : false;
364 void retro_cheat_reset(void)
369 void retro_cheat_set(unsigned index, bool enabled, const char *code)
374 // cheat funcs are destructive, need a copy..
375 strncpy(buf, code, sizeof(buf));
376 buf[sizeof(buf) - 1] = 0;
378 if (index < NumCheats)
379 ret = EditCheat(index, "", buf);
381 ret = AddCheat("", buf);
384 SysPrintf("Failed to set cheat %#u\n", index);
385 else if (index < NumCheats)
386 Cheats[index].Enabled = enabled;
389 bool retro_load_game(const struct retro_game_info *info)
391 #ifdef FRONTEND_SUPPORTS_RGB565
392 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
393 if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
394 SysPrintf("RGB565 supported, using it\n");
398 if (plugins_opened) {
403 set_cd_image(info->path);
405 /* have to reload after set_cd_image for correct cdr plugin */
406 if (LoadPlugins() == -1) {
407 SysPrintf("failed to load plugins\n");
414 if (OpenPlugins() == -1) {
415 SysPrintf("failed to open plugins\n");
419 plugin_call_rearmed_cbs();
422 if (CheckCdrom() == -1) {
423 SysPrintf("unsupported/invalid CD image: %s\n", info->path);
429 if (LoadCdrom() == -1) {
430 SysPrintf("could not load CD-ROM!\n");
438 bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
443 void retro_unload_game(void)
447 unsigned retro_get_region(void)
449 return RETRO_REGION_NTSC;
452 void *retro_get_memory_data(unsigned id)
457 size_t retro_get_memory_size(unsigned id)
462 void retro_reset(void)
467 static const unsigned short retro_psx_map[] = {
468 [RETRO_DEVICE_ID_JOYPAD_B] = 1 << DKEY_CROSS,
469 [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << DKEY_SQUARE,
470 [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << DKEY_SELECT,
471 [RETRO_DEVICE_ID_JOYPAD_START] = 1 << DKEY_START,
472 [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << DKEY_UP,
473 [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << DKEY_DOWN,
474 [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << DKEY_LEFT,
475 [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << DKEY_RIGHT,
476 [RETRO_DEVICE_ID_JOYPAD_A] = 1 << DKEY_CIRCLE,
477 [RETRO_DEVICE_ID_JOYPAD_X] = 1 << DKEY_TRIANGLE,
478 [RETRO_DEVICE_ID_JOYPAD_L] = 1 << DKEY_L1,
479 [RETRO_DEVICE_ID_JOYPAD_R] = 1 << DKEY_R1,
480 [RETRO_DEVICE_ID_JOYPAD_L2] = 1 << DKEY_L2,
481 [RETRO_DEVICE_ID_JOYPAD_R2] = 1 << DKEY_R2,
482 [RETRO_DEVICE_ID_JOYPAD_L3] = 1 << DKEY_L3,
483 [RETRO_DEVICE_ID_JOYPAD_R3] = 1 << DKEY_R3,
485 #define RETRO_PSX_MAP_LEN (sizeof(retro_psx_map) / sizeof(retro_psx_map[0]))
493 for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
494 if (input_state_cb(1, RETRO_DEVICE_JOYPAD, 0, i))
495 in_keystate |= retro_psx_map[i];
497 for (i = 0; i < RETRO_PSX_MAP_LEN; i++)
498 if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, i))
499 in_keystate |= retro_psx_map[i];
504 samples_to_send += 44100 / 60;
506 video_cb((vout_fb_dirty || !vout_can_dupe) ? vout_buf : NULL,
507 vout_width, vout_height, vout_width * 2);
511 void retro_init(void)
513 const char *bios[] = { "scph1001", "scph5501", "scph7001" };
519 ret = emu_core_preinit();
520 ret |= emu_core_init();
522 SysPrintf("PCSX init failed.\n");
526 vout_buf = malloc(640 * 512 * 2);
528 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir)
530 snprintf(Config.BiosDir, sizeof(Config.BiosDir), "%s/", dir);
532 for (i = 0; i < sizeof(bios) / sizeof(bios[0]); i++) {
533 snprintf(path, sizeof(path), "%s/%s.bin", dir, bios[i]);
534 f = fopen(path, "r");
536 snprintf(Config.Bios, sizeof(Config.Bios), "%s.bin", bios[i]);
542 SysPrintf("found BIOS file: %s\n", Config.Bios);
546 SysPrintf("no BIOS files found.\n");
549 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
551 environ_cb(RETRO_ENVIRONMENT_GET_CAN_DUPE, &vout_can_dupe);
553 /* Set how much slower PSX CPU runs * 100 (so that 200 is 2 times)
554 * we have to do this because cache misses and some IO penalties
555 * are not emulated. Warning: changing this may break compatibility. */
556 #ifdef __ARM_ARCH_7A__
557 cycle_multiplier = 175;
559 cycle_multiplier = 200;
564 init_memcard(Mcd1Data);
566 SaveFuncs.open = save_open;
567 SaveFuncs.read = save_read;
568 SaveFuncs.write = save_write;
569 SaveFuncs.seek = save_seek;
570 SaveFuncs.close = save_close;
573 void retro_deinit(void)