src/core/mainloop.cpp

   1 #include "lsnes.hpp"
   2 #include <snes/snes.hpp>
   3 #include <ui-libsnes/libsnes.hpp>
   4
   5 #include "core/command.hpp"
   6 #include "core/controller.hpp"
   7 #include "core/dispatch.hpp"
   8 #include "core/framebuffer.hpp"
   9 #include "core/framerate.hpp"
  10 #include "core/lua.hpp"
  11 #include "core/mainloop.hpp"
  12 #include "core/movie.hpp"
  13 #include "core/moviedata.hpp"
  14 #include "core/moviefile.hpp"
  15 #include "core/memorymanip.hpp"
  16 #include "core/memorywatch.hpp"
  17 #include "core/render.hpp"
  18 #include "core/rom.hpp"
  19 #include "core/rrdata.hpp"
  20 #include "core/settings.hpp"
  21 #include "core/window.hpp"
  22
  23 #include <iomanip>
  24 #include <cassert>
  25 #include <sstream>
  26 #include <iostream>
  27 #include <set>
  28 #include <sys/time.h>
  29
  30 #define SPECIAL_FRAME_START 0
  31 #define SPECIAL_FRAME_VIDEO 1
  32 #define SPECIAL_SAVEPOINT 2
  33 #define SPECIAL_NONE 3
  34
  35 void update_movie_state();
  36 time_t random_seed_value = 0;
  37
  38 namespace
  39 {
  40         enum advance_mode
  41         {
  42                 ADVANCE_QUIT,                   //Quit the emulator.
  43                 ADVANCE_AUTO,                   //Normal (possibly slowed down play).
  44                 ADVANCE_LOAD,                   //Loading a state.
  45                 ADVANCE_FRAME,                  //Frame advance.
  46                 ADVANCE_SUBFRAME,               //Subframe advance.
  47                 ADVANCE_SKIPLAG,                //Skip lag (oneshot, reverts to normal).
  48                 ADVANCE_SKIPLAG_PENDING,        //Activate skip lag mode at next frame.
  49                 ADVANCE_PAUSE,                  //Unconditional pause.
  50         };
  51
  52         //Previous mouse mask.
  53         int prev_mouse_mask = 0;
  54         //Flags related to repeating advance.
  55         bool advanced_once;
  56         bool cancel_advance;
  57         //Emulator advance mode. Detemines pauses at start of frame / subframe, etc..
  58         enum advance_mode amode;
  59         //Mode and filename of pending load, one of LOAD_* constants.
  60         int loadmode;
  61         std::string pending_load;
  62         //Queued saves (all savestates).
  63         std::set<std::string> queued_saves;
  64         bool stepping_into_save;
  65         //Save jukebox.
  66         std::vector<std::string> save_jukebox;
  67         size_t save_jukebox_pointer;
  68         //Pending reset cycles. -1 if no reset pending, otherwise, cycle count for reset.
  69         long pending_reset_cycles = -1;
  70         //Set by every video refresh.
  71         bool video_refresh_done;
  72         //Special subframe location. One of SPECIAL_* constants.
  73         int location_special;
  74         //Few settings.
  75         numeric_setting advance_timeout_first("advance-timeout", 0, 999999999, 500);
  76         boolean_setting pause_on_end("pause-on-end", false);
  77         //Last frame params.
  78         bool last_hires = false;
  79         bool last_interlace = false;
  80 }
  81
  82 class firmware_path_setting : public setting
  83 {
  84 public:
  85         firmware_path_setting() : setting("firmwarepath") { _firmwarepath = "."; default_firmware = true; }
  86         void blank() throw(std::bad_alloc, std::runtime_error)
  87         {
  88                 _firmwarepath = ".";
  89                 default_firmware = true;
  90         }
  91
  92         bool is_set() throw()
  93         {
  94                 return !default_firmware;
  95         }
  96
  97         void set(const std::string& value) throw(std::bad_alloc, std::runtime_error)
  98         {
  99                 _firmwarepath = value;
 100                 default_firmware = false;
 101         }
 102
 103         std::string get() throw(std::bad_alloc)
 104         {
 105                 return _firmwarepath;
 106         }
 107
 108         operator std::string() throw(std::bad_alloc)
 109         {
 110                 return _firmwarepath;
 111         }
 112 private:
 113         std::string _firmwarepath;
 114         bool default_firmware;
 115 } firmwarepath_setting;
 116
 117 controller_frame movie_logic::update_controls(bool subframe) throw(std::bad_alloc, std::runtime_error)
 118 {
 119         if(lua_requests_subframe_paint)
 120                 redraw_framebuffer();
 121
 122         if(subframe) {
 123                 if(amode == ADVANCE_SUBFRAME) {
 124                         if(!cancel_advance && !advanced_once) {
 125                                 platform::wait(advance_timeout_first * 1000);
 126                                 advanced_once = true;
 127                         }
 128                         if(cancel_advance) {
 129                                 amode = ADVANCE_PAUSE;
 130                                 cancel_advance = false;
 131                         }
 132                         platform::set_paused(amode == ADVANCE_PAUSE);
 133                 } else if(amode == ADVANCE_FRAME) {
 134                         ;
 135                 } else {
 136                         if(amode == ADVANCE_SKIPLAG)
 137                                 amode = ADVANCE_PAUSE;
 138                         platform::set_paused(amode == ADVANCE_PAUSE);
 139                         cancel_advance = false;
 140                 }
 141                 if(amode == ADVANCE_SKIPLAG)
 142                         amode = ADVANCE_AUTO;
 143                 location_special = SPECIAL_NONE;
 144                 update_movie_state();
 145         } else {
 146                 if(amode == ADVANCE_SKIPLAG_PENDING)
 147                         amode = ADVANCE_SKIPLAG;
 148                 if(amode == ADVANCE_FRAME || amode == ADVANCE_SUBFRAME) {
 149                         if(!cancel_advance) {
 150                                 platform::wait(advanced_once ? to_wait_frame(get_utime()) :
 151                                         (advance_timeout_first * 1000));
 152                                 advanced_once = true;
 153                         }
 154                         if(cancel_advance) {
 155                                 amode = ADVANCE_PAUSE;
 156                                 cancel_advance = false;
 157                         }
 158                         platform::set_paused(amode == ADVANCE_PAUSE);
 159                 } else if(amode == ADVANCE_AUTO && movb.get_movie().readonly_mode() && pause_on_end) {
 160                         if(movb.get_movie().get_current_frame() == movb.get_movie().get_frame_count() + 1) {
 161                                 amode = ADVANCE_PAUSE;
 162                                 platform::set_paused(true);
 163                         }
 164                 } else {
 165                         platform::set_paused((amode == ADVANCE_PAUSE));
 166                         cancel_advance = false;
 167                 }
 168                 location_special = SPECIAL_FRAME_START;
 169                 update_movie_state();
 170
 171         }
 172         information_dispatch::do_status_update();
 173         platform::flush_command_queue();
 174         if(!subframe && pending_reset_cycles >= 0)
 175                 controls.reset(pending_reset_cycles);
 176         else if(!subframe)
 177                 controls.reset(-1);
 178         controller_frame tmp = controls.commit(movb.get_movie().get_current_frame());
 179         lua_callback_do_input(tmp, subframe);
 180         return tmp;
 181 }
 182
 183 namespace
 184 {
 185         enum advance_mode old_mode;
 186
 187         //Do pending load (automatically unpauses).
 188         void mark_pending_load(const std::string& filename, int lmode)
 189         {
 190                 loadmode = lmode;
 191                 pending_load = filename;
 192                 old_mode = amode;
 193                 amode = ADVANCE_LOAD;
 194                 platform::cancel_wait();
 195                 platform::set_paused(false);
 196         }
 197
 198         void mark_pending_save(const std::string& filename, int smode)
 199         {
 200                 if(smode == SAVE_MOVIE) {
 201                         //Just do this immediately.
 202                         do_save_movie(filename);
 203                         return;
 204                 }
 205                 queued_saves.insert(filename);
 206                 messages << "Pending save on '" << filename << "'" << std::endl;
 207         }
 208
 209         uint32_t lpalette[0x80000];
 210         void init_palette()
 211         {
 212                 static bool palette_init = false;
 213                 if(palette_init)
 214                         return;
 215                 palette_init = true;
 216                 for(unsigned i = 0; i < 0x80000; i++) {
 217                         unsigned l = (i >> 15) & 0xF;
 218                         unsigned r = (i >> 0) & 0x1F;
 219                         unsigned g = (i >> 5) & 0x1F;
 220                         unsigned b = (i >> 10) & 0x1F;
 221                         double _l = static_cast<double>(l);
 222                         double m = 17.0 / 31.0;
 223                         r = floor(m * r * _l + 0.5);
 224                         g = floor(m * g * _l + 0.5);
 225                         b = floor(m * b * _l + 0.5);
 226                         lpalette[i] = r * 65536 + g * 256 + b;
 227                 }
 228         }
 229 }
 230
 231 void update_movie_state()
 232 {
 233         auto& _status = platform::get_emustatus();
 234         if(!system_corrupt) {
 235                 std::ostringstream x;
 236                 x << movb.get_movie().get_current_frame() << "(";
 237                 if(location_special == SPECIAL_FRAME_START)
 238                         x << "0";
 239                 else if(location_special == SPECIAL_SAVEPOINT)
 240                         x << "S";
 241                 else if(location_special == SPECIAL_FRAME_VIDEO)
 242                         x << "V";
 243                 else
 244                         x << movb.get_movie().next_poll_number();
 245                 x << ";" << movb.get_movie().get_lag_frames() << ")/" << movb.get_movie().get_frame_count();
 246                 _status.set("Frame", x.str());
 247         } else
 248                 _status.set("Frame", "N/A");
 249         if(!system_corrupt) {
 250                 time_t timevalue = static_cast<time_t>(our_movie.rtc_second);
 251                 struct tm* time_decompose = gmtime(&timevalue);
 252                 char datebuffer[512];
 253                 strftime(datebuffer, 511, "%Y%m%d(%a)T%H%M%S", time_decompose);
 254                 _status.set("RTC", datebuffer);
 255         } else {
 256                 _status.set("RTC", "N/A");
 257         }
 258         {
 259                 std::ostringstream x;
 260                 auto& mo = movb.get_movie();
 261                 x << (information_dispatch::get_dumper_count() ? "D" : "-");
 262                 x << (last_hires ? "H" : "-");
 263                 x << (last_interlace ? "I" : "-");
 264                 if(system_corrupt)
 265                         x << "C";
 266                 else if(!mo.readonly_mode())
 267                         x << "R";
 268                 else if(mo.get_frame_count() >= mo.get_current_frame())
 269                         x << "P";
 270                 else
 271                         x << "F";
 272                 _status.set("Flags", x.str());
 273         }
 274         if(save_jukebox.size() > 0)
 275                 _status.set("Saveslot", translate_name_mprefix(save_jukebox[save_jukebox_pointer]));
 276         else
 277                 _status.erase("Saveslot");
 278         {
 279                 std::ostringstream x;
 280                 x << get_framerate();
 281                 _status.set("SPD%", x.str());
 282         }
 283         do_watch_memory();
 284
 285         controller_frame c;
 286         if(movb.get_movie().readonly_mode())
 287                 c = movb.get_movie().get_controls();
 288         else
 289                 c = controls.get_committed();
 290         for(unsigned i = 0; i < 8; i++) {
 291                 unsigned pindex = controls.lcid_to_pcid(i);
 292                 devicetype_t dtype = controls.pcid_to_type(pindex);
 293                 if(dtype == DT_NONE)
 294                         continue;
 295                 char buffer[MAX_DISPLAY_LENGTH];
 296                 c.display(pindex, buffer);
 297                 char y[3] = {'P', 0, 0};
 298                 y[1] = 49 + i;
 299                 _status.set(y, buffer);
 300         }
 301 }
 302
 303 uint64_t audio_irq_time;
 304 uint64_t controller_irq_time;
 305 uint64_t frame_irq_time;
 306
 307
 308 class my_interface : public SNES::Interface
 309 {
 310         string path(SNES::Cartridge::Slot slot, const string &hint)
 311         {
 312                 const char* _hint = hint;
 313                 std::string _hint2 = _hint;
 314                 std::string fwp = firmwarepath_setting;
 315                 std::string finalpath = fwp + "/" + _hint2;
 316                 return finalpath.c_str();
 317         }
 318
 319         time_t currentTime()
 320         {
 321                 return our_movie.rtc_second;
 322         }
 323
 324         time_t randomSeed()
 325         {
 326                 return random_seed_value;
 327         }
 328
 329         void videoRefresh(const uint32_t* data, bool hires, bool interlace, bool overscan)
 330         {
 331 //              uint64_t time_x = get_utime();
 332                 last_hires = hires;
 333                 last_interlace = interlace;
 334                 init_palette();
 335                 if(stepping_into_save)
 336                         messages << "Got video refresh in runtosave, expect desyncs!" << std::endl;
 337                 video_refresh_done = true;
 338                 lua_callback_do_frame_emulated();
 339                 bool region = (SNES::system.region() == SNES::System::Region::PAL);
 340                 information_dispatch::do_raw_frame(data, hires, interlace, overscan, region ? VIDEO_REGION_PAL :
 341                         VIDEO_REGION_NTSC);
 342                 //std::cerr << "Frame: hires     flag is " << (hires ? "  " : "un") << "set." << std::endl;
 343                 //std::cerr << "Frame: interlace flag is " << (interlace ? "  " : "un") << "set." << std::endl;
 344                 //std::cerr << "Frame: overscan  flag is " << (overscan ? "  " : "un") << "set." << std::endl;
 345                 //std::cerr << "Frame: region    flag is " << (region ? "  " : "un") << "set." << std::endl;
 346                 lcscreen ls(data, hires, interlace, overscan, region);
 347                 location_special = SPECIAL_FRAME_VIDEO;
 348                 update_movie_state();
 349                 redraw_framebuffer(ls, false, true);
 350                 uint32_t fps_n, fps_d;
 351                 uint32_t fclocks;
 352                 if(region)
 353                         fclocks = interlace ? DURATION_PAL_FIELD : DURATION_PAL_FRAME;
 354                 else
 355                         fclocks = interlace ? DURATION_NTSC_FIELD : DURATION_NTSC_FRAME;
 356                 fps_n = SNES::system.cpu_frequency();
 357                 fps_d = fclocks;
 358                 uint32_t g = gcd(fps_n, fps_d);
 359                 fps_n /= g;
 360                 fps_d /= g;
 361                 information_dispatch::do_frame(ls, fps_n, fps_d);
 362 //              time_x = get_utime() - time_x;
 363 //              std::cerr << "IRQ TIMINGS (microseconds): "
 364 //                      << "V: " << time_x << " "
 365 //                      << "A: " << audio_irq_time << " "
 366 //                      << "C: " << controller_irq_time << " "
 367 //                      << "F: " << frame_irq_time << " "
 368 //                      << "Total: " << (time_x + audio_irq_time + controller_irq_time + frame_irq_time) << std::endl;
 369                 audio_irq_time = controller_irq_time = 0;
 370         }
 371
 372         void audioSample(int16_t l_sample, int16_t r_sample)
 373         {
 374 //              uint64_t time_x = get_utime();
 375                 uint16_t _l = l_sample;
 376                 uint16_t _r = r_sample;
 377                 platform::audio_sample(_l + 32768, _r + 32768);
 378                 information_dispatch::do_sample(l_sample, r_sample);
 379                 //The SMP emits a sample every 768 ticks of its clock. Use this in order to keep track of time.
 380                 our_movie.rtc_subsecond += 768;
 381                 while(our_movie.rtc_subsecond >= SNES::system.apu_frequency()) {
 382                         our_movie.rtc_second++;
 383                         our_movie.rtc_subsecond -= SNES::system.apu_frequency();
 384                 }
 385 //              audio_irq_time += get_utime() - time_x;
 386         }
 387
 388         int16_t inputPoll(bool port, SNES::Input::Device device, unsigned index, unsigned id)
 389         {
 390 //              uint64_t time_x = get_utime();
 391                 int16_t x;
 392                 x = movb.input_poll(port, index, id);
 393                 lua_callback_snoop_input(port ? 1 : 0, index, id, x);
 394 //              controller_irq_time += get_utime() - time_x;
 395                 return x;
 396         }
 397 };
 398
 399 namespace
 400 {
 401         function_ptr_command<> count_rerecords("count-rerecords", "Count rerecords",
 402                 "Syntax: count-rerecords\nCounts rerecords.\n",
 403                 []() throw(std::bad_alloc, std::runtime_error) {
 404                         std::vector<char> tmp;
 405                         uint64_t x = rrdata::write(tmp);
 406                         messages << x << " rerecord(s)" << std::endl;
 407                 });
 408
 409         function_ptr_command<const std::string&> quit_emulator("quit-emulator", "Quit the emulator",
 410                 "Syntax: quit-emulator [/y]\nQuits emulator (/y => don't ask for confirmation).\n",
 411                 [](const std::string& args) throw(std::bad_alloc, std::runtime_error) {
 412                         amode = ADVANCE_QUIT;
 413                         platform::set_paused(false);
 414                         platform::cancel_wait();
 415                 });
 416
 417         function_ptr_command<> pause_emulator("pause-emulator", "(Un)pause the emulator",
 418                 "Syntax: pause-emulator\n(Un)pauses the emulator.\n",
 419                 []() throw(std::bad_alloc, std::runtime_error) {
 420                         if(amode != ADVANCE_AUTO) {
 421                                 amode = ADVANCE_AUTO;
 422                                 platform::set_paused(false);
 423                                 platform::cancel_wait();
 424                                 messages << "Unpaused" << std::endl;
 425                         } else {
 426                                 platform::cancel_wait();
 427                                 cancel_advance = false;
 428                                 amode = ADVANCE_PAUSE;
 429                                 messages << "Paused" << std::endl;
 430                         }
 431                 });
 432
 433         function_ptr_command<> save_jukebox_prev("cycle-jukebox-backward", "Cycle save jukebox backwards",
 434                 "Syntax: cycle-jukebox-backward\nCycle save jukebox backwards\n",
 435                 []() throw(std::bad_alloc, std::runtime_error) {
 436                         if(save_jukebox_pointer == 0)
 437                                 save_jukebox_pointer = save_jukebox.size() - 1;
 438                         else
 439                                 save_jukebox_pointer--;
 440                         if(save_jukebox_pointer >= save_jukebox.size())
 441                                 save_jukebox_pointer = 0;
 442                         update_movie_state();
 443                         information_dispatch::do_status_update();
 444                 });
 445
 446         function_ptr_command<> save_jukebox_next("cycle-jukebox-forward", "Cycle save jukebox forwards",
 447                 "Syntax: cycle-jukebox-forward\nCycle save jukebox forwards\n",
 448                 []() throw(std::bad_alloc, std::runtime_error) {
 449                         if(save_jukebox_pointer == save_jukebox.size() - 1)
 450                                 save_jukebox_pointer = 0;
 451                         else
 452                                 save_jukebox_pointer++;
 453                         if(save_jukebox_pointer >= save_jukebox.size())
 454                                 save_jukebox_pointer = 0;
 455                         update_movie_state();
 456                         information_dispatch::do_status_update();
 457                 });
 458
 459         function_ptr_command<arg_filename> add_jukebox("add-jukebox-save", "Add save to jukebox",
 460                 "Syntax: add-jukebox-save\nAdd save to jukebox\n",
 461                 [](arg_filename filename) throw(std::bad_alloc, std::runtime_error) {
 462                         save_jukebox.push_back(filename);
 463                         update_movie_state();
 464                         information_dispatch::do_status_update();
 465                 });
 466
 467         function_ptr_command<> load_jukebox("load-jukebox", "Load save from jukebox",
 468                 "Syntax: load-jukebox\nLoad save from jukebox\n",
 469                 []() throw(std::bad_alloc, std::runtime_error) {
 470                         if(!save_jukebox.size())
 471                                 throw std::runtime_error("No saves in jukebox");
 472                         mark_pending_load(save_jukebox[save_jukebox_pointer], LOAD_STATE_CURRENT);
 473                 });
 474
 475         function_ptr_command<> save_jukebox_c("save-jukebox", "Save save to jukebox",
 476                 "Syntax: save-jukebox\nSave save to jukebox\n",
 477                 []() throw(std::bad_alloc, std::runtime_error) {
 478                         if(!save_jukebox.size())
 479                                 throw std::runtime_error("No saves in jukebox");
 480                         mark_pending_save(save_jukebox[save_jukebox_pointer], SAVE_STATE);
 481                 });
 482
 483         function_ptr_command<> padvance_frame("+advance-frame", "Advance one frame",
 484                 "Syntax: +advance-frame\nAdvances the emulation by one frame.\n",
 485                 []() throw(std::bad_alloc, std::runtime_error) {
 486                         amode = ADVANCE_FRAME;
 487                         cancel_advance = false;
 488                         advanced_once = false;
 489                         platform::cancel_wait();
 490                         platform::set_paused(false);
 491                 });
 492
 493         function_ptr_command<> nadvance_frame("-advance-frame", "Advance one frame",
 494                 "No help available\n",
 495                 []() throw(std::bad_alloc, std::runtime_error) {
 496                         cancel_advance = true;
 497                         platform::cancel_wait();
 498                         platform::set_paused(false);
 499                 });
 500
 501         function_ptr_command<> padvance_poll("+advance-poll", "Advance one subframe",
 502                 "Syntax: +advance-poll\nAdvances the emulation by one subframe.\n",
 503                 []() throw(std::bad_alloc, std::runtime_error) {
 504                         amode = ADVANCE_SUBFRAME;
 505                         cancel_advance = false;
 506                         advanced_once = false;
 507                         platform::cancel_wait();
 508                         platform::set_paused(false);
 509                 });
 510
 511         function_ptr_command<> nadvance_poll("-advance-poll", "Advance one subframe",
 512                 "No help available\n",
 513                 []() throw(std::bad_alloc, std::runtime_error) {
 514                         cancel_advance = true;
 515                         platform::cancel_wait();
 516                         platform::set_paused(false);
 517                 });
 518
 519         function_ptr_command<> advance_skiplag("advance-skiplag", "Skip to next poll",
 520                 "Syntax: advance-skiplag\nAdvances the emulation to the next poll.\n",
 521                 []() throw(std::bad_alloc, std::runtime_error) {
 522                         amode = ADVANCE_SKIPLAG;
 523                         platform::cancel_wait();
 524                         platform::set_paused(false);
 525                 });
 526
 527         function_ptr_command<> reset_c("reset", "Reset the SNES",
 528                 "Syntax: reset\nResets the SNES in beginning of the next frame.\n",
 529                 []() throw(std::bad_alloc, std::runtime_error) {
 530                         pending_reset_cycles = 0;
 531                 });
 532
 533         function_ptr_command<arg_filename> load_c("load", "Load savestate (current mode)",
 534                 "Syntax: load <file>\nLoads SNES state from <file> in current mode\n",
 535                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 536                         mark_pending_load(args, LOAD_STATE_CURRENT);
 537                 });
 538
 539         function_ptr_command<arg_filename> load_state_c("load-state", "Load savestate (R/W)",
 540                 "Syntax: load-state <file>\nLoads SNES state from <file> in Read/Write mode\n",
 541                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 542                         mark_pending_load(args, LOAD_STATE_RW);
 543                 });
 544
 545         function_ptr_command<arg_filename> load_readonly("load-readonly", "Load savestate (RO)",
 546                 "Syntax: load-readonly <file>\nLoads SNES state from <file> in read-only mode\n",
 547                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 548                         mark_pending_load(args, LOAD_STATE_RO);
 549                 });
 550
 551         function_ptr_command<arg_filename> load_preserve("load-preserve", "Load savestate (preserve input)",
 552                 "Syntax: load-preserve <file>\nLoads SNES state from <file> preserving input\n",
 553                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 554                         mark_pending_load(args, LOAD_STATE_PRESERVE);
 555                 });
 556
 557         function_ptr_command<arg_filename> load_movie_c("load-movie", "Load movie",
 558                 "Syntax: load-movie <file>\nLoads SNES movie from <file>\n",
 559                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 560                         mark_pending_load(args, LOAD_STATE_MOVIE);
 561                 });
 562
 563
 564         function_ptr_command<arg_filename> save_state("save-state", "Save state",
 565                 "Syntax: save-state <file>\nSaves SNES state to <file>\n",
 566                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 567                         mark_pending_save(args, SAVE_STATE);
 568                 });
 569
 570         function_ptr_command<arg_filename> save_movie("save-movie", "Save movie",
 571                 "Syntax: save-movie <file>\nSaves SNES movie to <file>\n",
 572                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 573                         mark_pending_save(args, SAVE_MOVIE);
 574                 });
 575
 576         function_ptr_command<> set_rwmode("set-rwmode", "Switch to read/write mode",
 577                 "Syntax: set-rwmode\nSwitches to read/write mode\n",
 578                 []() throw(std::bad_alloc, std::runtime_error) {
 579                         movb.get_movie().readonly_mode(false);
 580                         information_dispatch::do_mode_change(false);
 581                         lua_callback_do_readwrite();
 582                         update_movie_state();
 583                         information_dispatch::do_status_update();
 584                 });
 585
 586         function_ptr_command<> set_romode("set-romode", "Switch to read-only mode",
 587                 "Syntax: set-romode\nSwitches to read-only mode\n",
 588                 []() throw(std::bad_alloc, std::runtime_error) {
 589                         movb.get_movie().readonly_mode(true);
 590                         information_dispatch::do_mode_change(true);
 591                         update_movie_state();
 592                         information_dispatch::do_status_update();
 593                 });
 594
 595         function_ptr_command<> toggle_rwmode("toggle-rwmode", "Toggle read/write mode",
 596                 "Syntax: toggle-rwmode\nToggles read/write mode\n",
 597                 []() throw(std::bad_alloc, std::runtime_error) {
 598                         bool c = movb.get_movie().readonly_mode();
 599                         movb.get_movie().readonly_mode(!c);
 600                         information_dispatch::do_mode_change(!c);
 601                         if(c)
 602                                 lua_callback_do_readwrite();
 603                         update_movie_state();
 604                         information_dispatch::do_status_update();
 605                 });
 606
 607         function_ptr_command<> repaint("repaint", "Redraw the screen",
 608                 "Syntax: repaint\nRedraws the screen\n",
 609                 []() throw(std::bad_alloc, std::runtime_error) {
 610                         redraw_framebuffer();
 611                 });
 612
 613         function_ptr_command<> tpon("toggle-pause-on-end", "Toggle pause on end", "Toggle pause on end\n",
 614                 []() throw(std::bad_alloc, std::runtime_error) {
 615                         bool newstate = !static_cast<bool>(pause_on_end);
 616                         pause_on_end.set(newstate ? "1" : "0");
 617                         messages << "Pause-on-end is now " << (newstate ? "ON" : "OFF") << std::endl;
 618                 });
 619
 620         function_ptr_command<> rewind_movie("rewind-movie", "Rewind movie to the beginning",
 621                 "Syntax: rewind-movie\nRewind movie to the beginning\n",
 622                 []() throw(std::bad_alloc, std::runtime_error) {
 623                         mark_pending_load("SOME NONBLANK NAME", LOAD_STATE_BEGINNING);
 624                 });
 625
 626         function_ptr_command<> cancel_save("cancel-saves", "Cancel all pending saves", "Syntax: cancel-save\n"
 627                 "Cancel pending saves\n",
 628                 []() throw(std::bad_alloc, std::runtime_error) {
 629                         queued_saves.clear();
 630                         messages << "Pending saves canceled." << std::endl;
 631                 });
 632
 633         function_ptr_command<> test1("test-1", "no description available", "No help available\n",
 634                 []() throw(std::bad_alloc, std::runtime_error) {
 635                         redraw_framebuffer(screen_nosignal);
 636                 });
 637
 638         function_ptr_command<> test2("test-2", "no description available", "No help available\n",
 639                 []() throw(std::bad_alloc, std::runtime_error) {
 640                         redraw_framebuffer(screen_corrupt);
 641                 });
 642
 643         function_ptr_command<> test3("test-3", "no description available", "No help available\n",
 644                 []() throw(std::bad_alloc, std::runtime_error) {
 645                         while(1);
 646                 });
 647
 648
 649         inverse_key ipause_emulator("pause-emulator", "(Un)pause");
 650         inverse_key ijback("cycle-jukebox-backward", "Cycle slot backwards");
 651         inverse_key ijforward("cycle-jukebox-forward", "Cycle slot forwards");
 652         inverse_key iloadj("load-jukebox", "load selected slot");
 653         inverse_key isavej("save-jukebox", "Save selected slot");
 654         inverse_key iadvframe("+advance-frame", "Advance frame");
 655         inverse_key iadvsubframe("+advance-poll", "Advance subframe");
 656         inverse_key iskiplag("advance-skiplag", "Advance to next poll");
 657         inverse_key ireset("reset", "System reset");
 658         inverse_key iset_rwmode("set-rwmode", "Switch to read/write");
 659         inverse_key itoggle_romode("set-romode", "Switch to read-only");
 660         inverse_key itoggle_rwmode("toggle-rwmode", "Toggle read-only");
 661         inverse_key irepaint("repaint", "Repaint screen");
 662         inverse_key itogglepause("toggle-pause-on-end", "Toggle pause-on-end");
 663         inverse_key irewind_movie("rewind-movie", "Rewind movie");
 664         inverse_key icancel_saves("cancel-saves", "Cancel pending saves");
 665         inverse_key iload1("load ${project}1.lsmv", "Load slot 1");
 666         inverse_key iload2("load ${project}2.lsmv", "Load slot 2");
 667         inverse_key iload3("load ${project}3.lsmv", "Load slot 3");
 668         inverse_key iload4("load ${project}4.lsmv", "Load slot 4");
 669         inverse_key iload5("load ${project}5.lsmv", "Load slot 5");
 670         inverse_key iload6("load ${project}6.lsmv", "Load slot 6");
 671         inverse_key iload7("load ${project}7.lsmv", "Load slot 7");
 672         inverse_key iload8("load ${project}8.lsmv", "Load slot 8");
 673         inverse_key iload9("load ${project}9.lsmv", "Load slot 9");
 674         inverse_key iload10("load ${project}10.lsmv", "Load slot 10");
 675         inverse_key iload11("load ${project}11.lsmv", "Load slot 11");
 676         inverse_key iload12("load ${project}12.lsmv", "Load slot 12");
 677         inverse_key iload13("load ${project}13.lsmv", "Load slot 13");
 678         inverse_key iload14("load ${project}14.lsmv", "Load slot 14");
 679         inverse_key iload15("load ${project}15.lsmv", "Load slot 15");
 680         inverse_key iload16("load ${project}16.lsmv", "Load slot 16");
 681         inverse_key iload17("load ${project}17.lsmv", "Load slot 17");
 682         inverse_key iload18("load ${project}18.lsmv", "Load slot 18");
 683         inverse_key iload19("load ${project}19.lsmv", "Load slot 19");
 684         inverse_key iload20("load ${project}20.lsmv", "Load slot 20");
 685         inverse_key iload21("load ${project}21.lsmv", "Load slot 21");
 686         inverse_key iload22("load ${project}22.lsmv", "Load slot 22");
 687         inverse_key iload23("load ${project}23.lsmv", "Load slot 23");
 688         inverse_key iload24("load ${project}24.lsmv", "Load slot 24");
 689         inverse_key iload25("load ${project}25.lsmv", "Load slot 25");
 690         inverse_key iload26("load ${project}26.lsmv", "Load slot 26");
 691         inverse_key iload27("load ${project}27.lsmv", "Load slot 27");
 692         inverse_key iload28("load ${project}28.lsmv", "Load slot 28");
 693         inverse_key iload29("load ${project}29.lsmv", "Load slot 29");
 694         inverse_key iload30("load ${project}30.lsmv", "Load slot 30");
 695         inverse_key iload31("load ${project}31.lsmv", "Load slot 31");
 696         inverse_key iload32("load ${project}32.lsmv", "Load slot 32");
 697         inverse_key isave1("save-state ${project}1.lsmv", "Save slot 1");
 698         inverse_key isave2("save-state ${project}2.lsmv", "Save slot 2");
 699         inverse_key isave3("save-state ${project}3.lsmv", "Save slot 3");
 700         inverse_key isave4("save-state ${project}4.lsmv", "Save slot 4");
 701         inverse_key isave5("save-state ${project}5.lsmv", "Save slot 5");
 702         inverse_key isave6("save-state ${project}6.lsmv", "Save slot 6");
 703         inverse_key isave7("save-state ${project}7.lsmv", "Save slot 7");
 704         inverse_key isave8("save-state ${project}8.lsmv", "Save slot 8");
 705         inverse_key isave9("save-state ${project}9.lsmv", "Save slot 9");
 706         inverse_key isave10("save-state ${project}10.lsmv", "Save slot 10");
 707         inverse_key isave11("save-state ${project}11.lsmv", "Save slot 11");
 708         inverse_key isave12("save-state ${project}12.lsmv", "Save slot 12");
 709         inverse_key isave13("save-state ${project}13.lsmv", "Save slot 13");
 710         inverse_key isave14("save-state ${project}14.lsmv", "Save slot 14");
 711         inverse_key isave15("save-state ${project}15.lsmv", "Save slot 15");
 712         inverse_key isave16("save-state ${project}16.lsmv", "Save slot 16");
 713         inverse_key isave17("save-state ${project}17.lsmv", "Save slot 17");
 714         inverse_key isave18("save-state ${project}18.lsmv", "Save slot 18");
 715         inverse_key isave19("save-state ${project}19.lsmv", "Save slot 19");
 716         inverse_key isave20("save-state ${project}20.lsmv", "Save slot 20");
 717         inverse_key isave21("save-state ${project}21.lsmv", "Save slot 21");
 718         inverse_key isave22("save-state ${project}22.lsmv", "Save slot 22");
 719         inverse_key isave23("save-state ${project}23.lsmv", "Save slot 23");
 720         inverse_key isave24("save-state ${project}24.lsmv", "Save slot 24");
 721         inverse_key isave25("save-state ${project}25.lsmv", "Save slot 25");
 722         inverse_key isave26("save-state ${project}26.lsmv", "Save slot 26");
 723         inverse_key isave27("save-state ${project}27.lsmv", "Save slot 27");
 724         inverse_key isave28("save-state ${project}28.lsmv", "Save slot 28");
 725         inverse_key isave29("save-state ${project}29.lsmv", "Save slot 29");
 726         inverse_key isave30("save-state ${project}30.lsmv", "Save slot 30");
 727         inverse_key isave31("save-state ${project}31.lsmv", "Save slot 31");
 728         inverse_key isave32("save-state ${project}32.lsmv", "Save slot 32");
 729
 730         bool on_quit_prompt = false;
 731         class mywindowcallbacks : public information_dispatch
 732         {
 733         public:
 734                 mywindowcallbacks() : information_dispatch("mainloop-window-callbacks") {}
 735                 void on_new_dumper(const std::string& n)
 736                 {
 737                         update_movie_state();
 738                 }
 739                 void on_destroy_dumper(const std::string& n)
 740                 {
 741                         update_movie_state();
 742                 }
 743                 void on_close() throw()
 744                 {
 745                         if(on_quit_prompt) {
 746                                 amode = ADVANCE_QUIT;
 747                                 platform::set_paused(false);
 748                                 platform::cancel_wait();
 749                                 return;
 750                         }
 751                         on_quit_prompt = true;
 752                         try {
 753                                 amode = ADVANCE_QUIT;
 754                                 platform::set_paused(false);
 755                                 platform::cancel_wait();
 756                         } catch(...) {
 757                         }
 758                         on_quit_prompt = false;
 759                 }
 760         } mywcb;
 761
 762         //If there is a pending load, perform it. Return 1 on successful load, 0 if nothing to load, -1 on load
 763         //failing.
 764         int handle_load()
 765         {
 766                 if(pending_load != "") {
 767                         system_corrupt = false;
 768                         if(loadmode != LOAD_STATE_BEGINNING && !do_load_state(pending_load, loadmode)) {
 769                                 pending_load = "";
 770                                 return -1;
 771                         }
 772                         if(loadmode == LOAD_STATE_BEGINNING)
 773                                 do_load_beginning();
 774                         pending_load = "";
 775                         pending_reset_cycles = -1;
 776                         amode = ADVANCE_AUTO;
 777                         platform::cancel_wait();
 778                         platform::set_paused(false);
 779                         if(!system_corrupt) {
 780                                 location_special = SPECIAL_SAVEPOINT;
 781                                 update_movie_state();
 782                                 information_dispatch::do_status_update();
 783                                 platform::flush_command_queue();
 784                         }
 785                         return 1;
 786                 }
 787                 return 0;
 788         }
 789
 790         //If there are pending saves, perform them.
 791         void handle_saves()
 792         {
 793                 if(!queued_saves.empty()) {
 794                         stepping_into_save = true;
 795                         SNES::system.runtosave();
 796                         stepping_into_save = false;
 797                         for(auto i : queued_saves)
 798                                 do_save_state(i);
 799                 }
 800                 queued_saves.clear();
 801         }
 802
 803         //Do (delayed) reset. Return true if proper, false if forced at frame boundary.
 804         bool handle_reset(long cycles)
 805         {
 806                 if(cycles < 0)
 807                         return true;
 808                 video_refresh_done = false;
 809                 if(cycles == 0)
 810                         messages << "SNES reset" << std::endl;
 811                 else if(cycles > 0) {
 812                         messages << "SNES delayed reset not implemented (doing immediate reset)" << std::endl;
 813                         /* ... This code is just too buggy.
 814                         long cycles_executed = 0;
 815                         messages << "Executing delayed reset... This can take some time!" << std::endl;
 816                         while(cycles_executed < cycles && !video_refresh_done) {
 817                                 //Poll inputs once in a while to prevent activating watchdog.
 818                                 if(cycles_executed % 100 == 0)
 819                                         platform::flush_command_queue();
 820                                 SNES::cpu.op_step();
 821                                 cycles_executed++;
 822                         }
 823                         if(!video_refresh_done)
 824                                 messages << "SNES reset (delayed " << cycles_executed << ")" << std::endl;
 825                         else
 826                                 messages << "SNES reset (forced at " << cycles_executed << ")" << std::endl;
 827                         */
 828                 }
 829                 SNES::system.reset();
 830                 lua_callback_do_reset();
 831                 redraw_framebuffer(screen_nosignal);
 832                 if(video_refresh_done) {
 833                         to_wait_frame(get_utime());
 834                         return false;
 835                 }
 836                 return true;
 837         }
 838
 839         bool handle_corrupt()
 840         {
 841                 if(!system_corrupt)
 842                         return false;
 843                 while(system_corrupt) {
 844                         platform::cancel_wait();
 845                         platform::set_paused(true);
 846                         platform::flush_command_queue();
 847                         handle_load();
 848                         if(amode == ADVANCE_QUIT)
 849                                 return true;
 850                 }
 851                 return true;
 852         }
 853 }
 854
 855 std::vector<std::string> get_jukebox_names()
 856 {
 857         return save_jukebox;
 858 }
 859
 860 void set_jukebox_names(const std::vector<std::string>& newj)
 861 {
 862         save_jukebox = newj;
 863         if(save_jukebox_pointer >= save_jukebox.size())
 864                 save_jukebox_pointer = 0;
 865         update_movie_state();
 866 }
 867
 868 void main_loop(struct loaded_rom& rom, struct moviefile& initial, bool load_has_to_succeed) throw(std::bad_alloc,
 869         std::runtime_error)
 870 {
 871         //Basic initialization.
 872         init_special_screens();
 873         our_rom = &rom;
 874         my_interface intrf;
 875         auto old_inteface = SNES::interface;
 876         SNES::interface = &intrf;
 877         SNES::system.init();
 878
 879         //Load our given movie.
 880         bool first_round = false;
 881         bool just_did_loadstate = false;
 882         try {
 883                 do_load_state(initial, LOAD_STATE_DEFAULT);
 884                 location_special = SPECIAL_SAVEPOINT;
 885                 update_movie_state();
 886                 first_round = our_movie.is_savestate;
 887                 just_did_loadstate = first_round;
 888         } catch(std::bad_alloc& e) {
 889                 OOM_panic();
 890         } catch(std::exception& e) {
 891                 messages << "ERROR: Can't load initial state: " << e.what() << std::endl;
 892                 if(load_has_to_succeed) {
 893                         messages << "FATAL: Can't load movie" << std::endl;
 894                         platform::fatal_error();
 895                 }
 896                 system_corrupt = true;
 897                 update_movie_state();
 898                 redraw_framebuffer(screen_corrupt);
 899         }
 900
 901         lua_callback_startup();
 902
 903         platform::set_paused(false);
 904         amode = ADVANCE_AUTO;
 905         uint64_t time_x = get_utime();
 906         while(amode != ADVANCE_QUIT || !queued_saves.empty()) {
 907                 if(handle_corrupt()) {
 908                         first_round = our_movie.is_savestate;
 909                         just_did_loadstate = first_round;
 910                         continue;
 911                 }
 912                 long resetcycles = -1;
 913                 ack_frame_tick(get_utime());
 914                 if(amode == ADVANCE_SKIPLAG_PENDING)
 915                         amode = ADVANCE_SKIPLAG;
 916
 917                 if(!first_round) {
 918                         resetcycles = movb.new_frame_starting(amode == ADVANCE_SKIPLAG);
 919                         if(amode == ADVANCE_QUIT && queued_saves.empty())
 920                                 break;
 921                         bool delayed_reset = (resetcycles > 0);
 922                         pending_reset_cycles = -1;
 923                         if(!handle_reset(resetcycles)) {
 924                                 continue;
 925                         }
 926                         if(!delayed_reset) {
 927                                 handle_saves();
 928                         }
 929                         int r = 0;
 930                         if(queued_saves.empty())
 931                                 r = handle_load();
 932                         if(r > 0 || system_corrupt) {
 933                                 first_round = our_movie.is_savestate;
 934                                 if(system_corrupt)
 935                                         amode = ADVANCE_PAUSE;
 936                                 else
 937                                         amode = old_mode;
 938                                 just_did_loadstate = first_round;
 939                                 continue;
 940                         } else if(r < 0) {
 941                                 //Not exactly desriable, but this at least won't desync.
 942                                 amode = ADVANCE_PAUSE;
 943                         }
 944                 }
 945                 if(just_did_loadstate) {
 946                         //If we just loadstated, we are up to date.
 947                         if(amode == ADVANCE_QUIT)
 948                                 break;
 949                         platform::cancel_wait();
 950                         platform::set_paused(amode == ADVANCE_PAUSE);
 951                         platform::flush_command_queue();
 952                         //We already have done the reset this frame if we are going to do one at all.
 953                         movb.get_movie().set_controls(controls.get(movb.get_movie().get_current_frame()));
 954                         just_did_loadstate = false;
 955                 }
 956                 frame_irq_time = get_utime() - time_x;
 957                 SNES::system.run();
 958                 time_x = get_utime();
 959                 if(amode == ADVANCE_AUTO)
 960                         platform::wait(to_wait_frame(get_utime()));
 961                 first_round = false;
 962                 lua_callback_do_frame();
 963         }
 964         information_dispatch::do_dump_end();
 965         SNES::interface = old_inteface;
 966 }