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         //Do pending load (automatically unpauses).
 186         void mark_pending_load(const std::string& filename, int lmode)
 187         {
 188                 loadmode = lmode;
 189                 pending_load = filename;
 190                 amode = ADVANCE_LOAD;
 191                 platform::cancel_wait();
 192                 platform::set_paused(false);
 193         }
 194
 195         void mark_pending_save(const std::string& filename, int smode)
 196         {
 197                 if(smode == SAVE_MOVIE) {
 198                         //Just do this immediately.
 199                         do_save_movie(filename);
 200                         return;
 201                 }
 202                 queued_saves.insert(filename);
 203                 messages << "Pending save on '" << filename << "'" << std::endl;
 204         }
 205
 206         uint32_t lpalette[0x80000];
 207         void init_palette()
 208         {
 209                 static bool palette_init = false;
 210                 if(palette_init)
 211                         return;
 212                 palette_init = true;
 213                 for(unsigned i = 0; i < 0x80000; i++) {
 214                         unsigned l = (i >> 15) & 0xF;
 215                         unsigned r = (i >> 0) & 0x1F;
 216                         unsigned g = (i >> 5) & 0x1F;
 217                         unsigned b = (i >> 10) & 0x1F;
 218                         double _l = static_cast<double>(l);
 219                         double m = 17.0 / 31.0;
 220                         r = floor(m * r * _l + 0.5);
 221                         g = floor(m * g * _l + 0.5);
 222                         b = floor(m * b * _l + 0.5);
 223                         lpalette[i] = r * 65536 + g * 256 + b;
 224                 }
 225         }
 226 }
 227
 228 void update_movie_state()
 229 {
 230         auto& _status = platform::get_emustatus();
 231         if(!system_corrupt) {
 232                 std::ostringstream x;
 233                 x << movb.get_movie().get_current_frame() << "(";
 234                 if(location_special == SPECIAL_FRAME_START)
 235                         x << "0";
 236                 else if(location_special == SPECIAL_SAVEPOINT)
 237                         x << "S";
 238                 else if(location_special == SPECIAL_FRAME_VIDEO)
 239                         x << "V";
 240                 else
 241                         x << movb.get_movie().next_poll_number();
 242                 x << ";" << movb.get_movie().get_lag_frames() << ")/" << movb.get_movie().get_frame_count();
 243                 _status.set("Frame", x.str());
 244         } else
 245                 _status.set("Frame", "N/A");
 246         if(!system_corrupt) {
 247                 time_t timevalue = static_cast<time_t>(our_movie.rtc_second);
 248                 struct tm* time_decompose = gmtime(&timevalue);
 249                 char datebuffer[512];
 250                 strftime(datebuffer, 511, "%Y%m%d(%a)T%H%M%S", time_decompose);
 251                 _status.set("RTC", datebuffer);
 252         } else {
 253                 _status.set("RTC", "N/A");
 254         }
 255         {
 256                 std::ostringstream x;
 257                 auto& mo = movb.get_movie();
 258                 x << (information_dispatch::get_dumper_count() ? "D" : "-");
 259                 x << (last_hires ? "H" : "-");
 260                 x << (last_interlace ? "I" : "-");
 261                 if(system_corrupt)
 262                         x << "C";
 263                 else if(!mo.readonly_mode())
 264                         x << "R";
 265                 else if(mo.get_frame_count() >= mo.get_current_frame())
 266                         x << "P";
 267                 else
 268                         x << "F";
 269                 _status.set("Flags", x.str());
 270         }
 271         if(save_jukebox.size() > 0)
 272                 _status.set("Saveslot", save_jukebox[save_jukebox_pointer]);
 273         else
 274                 _status.erase("Saveslot");
 275         {
 276                 std::ostringstream x;
 277                 x << get_framerate();
 278                 _status.set("FPS", x.str());
 279         }
 280         do_watch_memory();
 281
 282         controller_frame c;
 283         if(movb.get_movie().readonly_mode())
 284                 c = movb.get_movie().get_controls();
 285         else
 286                 c = controls.get_committed();
 287         for(unsigned i = 0; i < 8; i++) {
 288                 unsigned pindex = controls.lcid_to_pcid(i);
 289                 devicetype_t dtype = controls.pcid_to_type(pindex);
 290                 if(dtype == DT_NONE)
 291                         continue;
 292                 char buffer[MAX_DISPLAY_LENGTH];
 293                 c.display(pindex, buffer);
 294                 char y[3] = {'P', 0, 0};
 295                 y[1] = 49 + i;
 296                 _status.set(y, buffer);
 297         }
 298 }
 299
 300 uint64_t audio_irq_time;
 301 uint64_t controller_irq_time;
 302 uint64_t frame_irq_time;
 303
 304
 305 class my_interface : public SNES::Interface
 306 {
 307         string path(SNES::Cartridge::Slot slot, const string &hint)
 308         {
 309                 const char* _hint = hint;
 310                 std::string _hint2 = _hint;
 311                 std::string fwp = firmwarepath_setting;
 312                 std::string finalpath = fwp + "/" + _hint2;
 313                 return finalpath.c_str();
 314         }
 315
 316         time_t currentTime()
 317         {
 318                 return our_movie.rtc_second;
 319         }
 320
 321         time_t randomSeed()
 322         {
 323                 return random_seed_value;
 324         }
 325
 326         void videoRefresh(const uint32_t* data, bool hires, bool interlace, bool overscan)
 327         {
 328 //              uint64_t time_x = get_utime();
 329                 last_hires = hires;
 330                 last_interlace = interlace;
 331                 init_palette();
 332                 if(stepping_into_save)
 333                         messages << "Got video refresh in runtosave, expect desyncs!" << std::endl;
 334                 video_refresh_done = true;
 335                 bool region = (SNES::system.region() == SNES::System::Region::PAL);
 336                 information_dispatch::do_raw_frame(data, hires, interlace, overscan, region ? VIDEO_REGION_PAL :
 337                         VIDEO_REGION_NTSC);
 338                 //std::cerr << "Frame: hires     flag is " << (hires ? "  " : "un") << "set." << std::endl;
 339                 //std::cerr << "Frame: interlace flag is " << (interlace ? "  " : "un") << "set." << std::endl;
 340                 //std::cerr << "Frame: overscan  flag is " << (overscan ? "  " : "un") << "set." << std::endl;
 341                 //std::cerr << "Frame: region    flag is " << (region ? "  " : "un") << "set." << std::endl;
 342                 lcscreen ls(data, hires, interlace, overscan, region);
 343                 location_special = SPECIAL_FRAME_VIDEO;
 344                 update_movie_state();
 345                 redraw_framebuffer(ls);
 346                 uint32_t fps_n, fps_d;
 347                 uint32_t fclocks;
 348                 if(region)
 349                         fclocks = interlace ? DURATION_PAL_FIELD : DURATION_PAL_FRAME;
 350                 else
 351                         fclocks = interlace ? DURATION_NTSC_FIELD : DURATION_NTSC_FRAME;
 352                 fps_n = SNES::system.cpu_frequency();
 353                 fps_d = fclocks;
 354                 uint32_t g = gcd(fps_n, fps_d);
 355                 fps_n /= g;
 356                 fps_d /= g;
 357                 information_dispatch::do_frame(ls, fps_n, fps_d);
 358 //              time_x = get_utime() - time_x;
 359 //              std::cerr << "IRQ TIMINGS (microseconds): "
 360 //                      << "V: " << time_x << " "
 361 //                      << "A: " << audio_irq_time << " "
 362 //                      << "C: " << controller_irq_time << " "
 363 //                      << "F: " << frame_irq_time << " "
 364 //                      << "Total: " << (time_x + audio_irq_time + controller_irq_time + frame_irq_time) << std::endl;
 365                 audio_irq_time = controller_irq_time = 0;
 366         }
 367
 368         void audioSample(int16_t l_sample, int16_t r_sample)
 369         {
 370 //              uint64_t time_x = get_utime();
 371                 uint16_t _l = l_sample;
 372                 uint16_t _r = r_sample;
 373                 platform::audio_sample(_l + 32768, _r + 32768);
 374                 information_dispatch::do_sample(l_sample, r_sample);
 375                 //The SMP emits a sample every 768 ticks of its clock. Use this in order to keep track of time.
 376                 our_movie.rtc_subsecond += 768;
 377                 while(our_movie.rtc_subsecond >= SNES::system.apu_frequency()) {
 378                         our_movie.rtc_second++;
 379                         our_movie.rtc_subsecond -= SNES::system.apu_frequency();
 380                 }
 381 //              audio_irq_time += get_utime() - time_x;
 382         }
 383
 384         int16_t inputPoll(bool port, SNES::Input::Device device, unsigned index, unsigned id)
 385         {
 386 //              uint64_t time_x = get_utime();
 387                 int16_t x;
 388                 x = movb.input_poll(port, index, id);
 389                 lua_callback_snoop_input(port ? 1 : 0, index, id, x);
 390 //              controller_irq_time += get_utime() - time_x;
 391                 return x;
 392         }
 393 };
 394
 395 namespace
 396 {
 397         function_ptr_command<> count_rerecords("count-rerecords", "Count rerecords",
 398                 "Syntax: count-rerecords\nCounts rerecords.\n",
 399                 []() throw(std::bad_alloc, std::runtime_error) {
 400                         std::vector<char> tmp;
 401                         uint64_t x = rrdata::write(tmp);
 402                         messages << x << " rerecord(s)" << std::endl;
 403                 });
 404
 405         function_ptr_command<const std::string&> quit_emulator("quit-emulator", "Quit the emulator",
 406                 "Syntax: quit-emulator [/y]\nQuits emulator (/y => don't ask for confirmation).\n",
 407                 [](const std::string& args) throw(std::bad_alloc, std::runtime_error) {
 408                         if(args == "/y" || platform::modal_message("Really quit?", true)) {
 409                                 amode = ADVANCE_QUIT;
 410                                 platform::set_paused(false);
 411                                 platform::cancel_wait();
 412                         }
 413                 });
 414
 415         function_ptr_command<> pause_emulator("pause-emulator", "(Un)pause the emulator",
 416                 "Syntax: pause-emulator\n(Un)pauses the emulator.\n",
 417                 []() throw(std::bad_alloc, std::runtime_error) {
 418                         if(amode != ADVANCE_AUTO) {
 419                                 amode = ADVANCE_AUTO;
 420                                 platform::set_paused(false);
 421                                 platform::cancel_wait();
 422                                 messages << "Unpaused" << std::endl;
 423                         } else {
 424                                 platform::cancel_wait();
 425                                 cancel_advance = false;
 426                                 amode = ADVANCE_PAUSE;
 427                                 messages << "Paused" << std::endl;
 428                         }
 429                 });
 430
 431         function_ptr_command<> save_jukebox_prev("cycle-jukebox-backward", "Cycle save jukebox backwards",
 432                 "Syntax: cycle-jukebox-backwards\nCycle save jukebox backwards\n",
 433                 []() throw(std::bad_alloc, std::runtime_error) {
 434                         if(save_jukebox_pointer == 0)
 435                                 save_jukebox_pointer = save_jukebox.size() - 1;
 436                         else
 437                                 save_jukebox_pointer--;
 438                         if(save_jukebox_pointer >= save_jukebox.size())
 439                                 save_jukebox_pointer = 0;
 440                         update_movie_state();
 441                         information_dispatch::do_status_update();
 442                 });
 443
 444         function_ptr_command<> save_jukebox_next("cycle-jukebox-forward", "Cycle save jukebox forwards",
 445                 "Syntax: cycle-jukebox-forwards\nCycle save jukebox forwards\n",
 446                 []() throw(std::bad_alloc, std::runtime_error) {
 447                         if(save_jukebox_pointer == save_jukebox.size() - 1)
 448                                 save_jukebox_pointer = 0;
 449                         else
 450                                 save_jukebox_pointer++;
 451                         if(save_jukebox_pointer >= save_jukebox.size())
 452                                 save_jukebox_pointer = 0;
 453                         update_movie_state();
 454                         information_dispatch::do_status_update();
 455                 });
 456
 457         function_ptr_command<arg_filename> add_jukebox("add-jukebox-save", "Add save to jukebox",
 458                 "Syntax: add-jukebox-save\nAdd save to jukebox\n",
 459                 [](arg_filename filename) throw(std::bad_alloc, std::runtime_error) {
 460                         save_jukebox.push_back(filename);
 461                         update_movie_state();
 462                         information_dispatch::do_status_update();
 463                 });
 464
 465         function_ptr_command<> load_jukebox("load-jukebox", "Load save from jukebox",
 466                 "Syntax: load-jukebox\nLoad save from jukebox\n",
 467                 []() throw(std::bad_alloc, std::runtime_error) {
 468                         if(!save_jukebox.size())
 469                                 throw std::runtime_error("No saves in jukebox");
 470                         mark_pending_load(save_jukebox[save_jukebox_pointer], LOAD_STATE_CURRENT);
 471                 });
 472
 473         function_ptr_command<> save_jukebox_c("save-jukebox", "Save save to jukebox",
 474                 "Syntax: save-jukebox\nSave save to jukebox\n",
 475                 []() throw(std::bad_alloc, std::runtime_error) {
 476                         if(!save_jukebox.size())
 477                                 throw std::runtime_error("No saves in jukebox");
 478                         mark_pending_save(save_jukebox[save_jukebox_pointer], SAVE_STATE);
 479                 });
 480
 481         function_ptr_command<> padvance_frame("+advance-frame", "Advance one frame",
 482                 "Syntax: +advance-frame\nAdvances the emulation by one frame.\n",
 483                 []() throw(std::bad_alloc, std::runtime_error) {
 484                         amode = ADVANCE_FRAME;
 485                         cancel_advance = false;
 486                         advanced_once = false;
 487                         platform::cancel_wait();
 488                         platform::set_paused(false);
 489                 });
 490
 491         function_ptr_command<> nadvance_frame("-advance-frame", "Advance one frame",
 492                 "No help available\n",
 493                 []() throw(std::bad_alloc, std::runtime_error) {
 494                         cancel_advance = true;
 495                         platform::cancel_wait();
 496                         platform::set_paused(false);
 497                 });
 498
 499         function_ptr_command<> padvance_poll("+advance-poll", "Advance one subframe",
 500                 "Syntax: +advance-poll\nAdvances the emulation by one subframe.\n",
 501                 []() throw(std::bad_alloc, std::runtime_error) {
 502                         amode = ADVANCE_SUBFRAME;
 503                         cancel_advance = false;
 504                         advanced_once = false;
 505                         platform::cancel_wait();
 506                         platform::set_paused(false);
 507                 });
 508
 509         function_ptr_command<> nadvance_poll("-advance-poll", "Advance one subframe",
 510                 "No help available\n",
 511                 []() throw(std::bad_alloc, std::runtime_error) {
 512                         cancel_advance = true;
 513                         platform::cancel_wait();
 514                         platform::set_paused(false);
 515                 });
 516
 517         function_ptr_command<> advance_skiplag("advance-skiplag", "Skip to next poll",
 518                 "Syntax: advance-skiplag\nAdvances the emulation to the next poll.\n",
 519                 []() throw(std::bad_alloc, std::runtime_error) {
 520                         amode = ADVANCE_SKIPLAG;
 521                         platform::cancel_wait();
 522                         platform::set_paused(false);
 523                 });
 524
 525         function_ptr_command<> reset_c("reset", "Reset the SNES",
 526                 "Syntax: reset\nResets the SNES in beginning of the next frame.\n",
 527                 []() throw(std::bad_alloc, std::runtime_error) {
 528                         pending_reset_cycles = 0;
 529                 });
 530
 531         function_ptr_command<arg_filename> load_c("load", "Load savestate (current mode)",
 532                 "Syntax: load <file>\nLoads SNES state from <file> in current mode\n",
 533                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 534                         mark_pending_load(args, LOAD_STATE_CURRENT);
 535                 });
 536
 537         function_ptr_command<arg_filename> load_state_c("load-state", "Load savestate (R/W)",
 538                 "Syntax: load-state <file>\nLoads SNES state from <file> in Read/Write mode\n",
 539                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 540                         mark_pending_load(args, LOAD_STATE_RW);
 541                 });
 542
 543         function_ptr_command<arg_filename> load_readonly("load-readonly", "Load savestate (RO)",
 544                 "Syntax: load-readonly <file>\nLoads SNES state from <file> in read-only mode\n",
 545                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 546                         mark_pending_load(args, LOAD_STATE_RO);
 547                 });
 548
 549         function_ptr_command<arg_filename> load_preserve("load-preserve", "Load savestate (preserve input)",
 550                 "Syntax: load-preserve <file>\nLoads SNES state from <file> preserving input\n",
 551                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 552                         mark_pending_load(args, LOAD_STATE_PRESERVE);
 553                 });
 554
 555         function_ptr_command<arg_filename> load_movie_c("load-movie", "Load movie",
 556                 "Syntax: load-movie <file>\nLoads SNES movie from <file>\n",
 557                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 558                         mark_pending_load(args, LOAD_STATE_MOVIE);
 559                 });
 560
 561
 562         function_ptr_command<arg_filename> save_state("save-state", "Save state",
 563                 "Syntax: save-state <file>\nSaves SNES state to <file>\n",
 564                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 565                         mark_pending_save(args, SAVE_STATE);
 566                 });
 567
 568         function_ptr_command<arg_filename> save_movie("save-movie", "Save movie",
 569                 "Syntax: save-movie <file>\nSaves SNES movie to <file>\n",
 570                 [](arg_filename args) throw(std::bad_alloc, std::runtime_error) {
 571                         mark_pending_save(args, SAVE_MOVIE);
 572                 });
 573
 574         function_ptr_command<> set_rwmode("set-rwmode", "Switch to read/write mode",
 575                 "Syntax: set-rwmode\nSwitches to read/write mode\n",
 576                 []() throw(std::bad_alloc, std::runtime_error) {
 577                         movb.get_movie().readonly_mode(false);
 578                         information_dispatch::do_mode_change(false);
 579                         lua_callback_do_readwrite();
 580                         update_movie_state();
 581                         information_dispatch::do_status_update();
 582                 });
 583
 584         function_ptr_command<> set_romode("set-romode", "Switch to read-only mode",
 585                 "Syntax: set-romode\nSwitches to read-only mode\n",
 586                 []() throw(std::bad_alloc, std::runtime_error) {
 587                         movb.get_movie().readonly_mode(true);
 588                         information_dispatch::do_mode_change(true);
 589                         update_movie_state();
 590                         information_dispatch::do_status_update();
 591                 });
 592
 593         function_ptr_command<> toggle_rwmode("toggle-rwmode", "Toggle read/write mode",
 594                 "Syntax: toggle-rwmode\nToggles read/write mode\n",
 595                 []() throw(std::bad_alloc, std::runtime_error) {
 596                         bool c = movb.get_movie().readonly_mode();
 597                         movb.get_movie().readonly_mode(!c);
 598                         information_dispatch::do_mode_change(!c);
 599                         if(c)
 600                                 lua_callback_do_readwrite();
 601                         update_movie_state();
 602                         information_dispatch::do_status_update();
 603                 });
 604
 605         function_ptr_command<> repaint("repaint", "Redraw the screen",
 606                 "Syntax: repaint\nRedraws the screen\n",
 607                 []() throw(std::bad_alloc, std::runtime_error) {
 608                         redraw_framebuffer();
 609                 });
 610
 611         function_ptr_command<> tpon("toggle-pause-on-end", "Toggle pause on end", "Toggle pause on end\n",
 612                 []() throw(std::bad_alloc, std::runtime_error) {
 613                         bool newstate = !static_cast<bool>(pause_on_end);
 614                         pause_on_end.set(newstate ? "1" : "0");
 615                         messages << "Pause-on-end is now " << (newstate ? "ON" : "OFF") << std::endl;
 616                 });
 617
 618         function_ptr_command<> test1("test-1", "no description available", "No help available\n",
 619                 []() throw(std::bad_alloc, std::runtime_error) {
 620                         redraw_framebuffer(screen_nosignal);
 621                 });
 622
 623         function_ptr_command<> test2("test-2", "no description available", "No help available\n",
 624                 []() throw(std::bad_alloc, std::runtime_error) {
 625                         redraw_framebuffer(screen_corrupt);
 626                 });
 627
 628         function_ptr_command<> test3("test-3", "no description available", "No help available\n",
 629                 []() throw(std::bad_alloc, std::runtime_error) {
 630                         while(1);
 631                 });
 632
 633
 634         bool on_quit_prompt = false;
 635         class mywindowcallbacks : public information_dispatch
 636         {
 637         public:
 638                 mywindowcallbacks() : information_dispatch("mainloop-window-callbacks") {}
 639                 void on_new_dumper(const std::string& n)
 640                 {
 641                         update_movie_state();
 642                 }
 643                 void on_destroy_dumper(const std::string& n)
 644                 {
 645                         update_movie_state();
 646                 }
 647                 void on_close() throw()
 648                 {
 649                         if(on_quit_prompt) {
 650                                 amode = ADVANCE_QUIT;
 651                                 platform::set_paused(false);
 652                                 platform::cancel_wait();
 653                                 return;
 654                         }
 655                         on_quit_prompt = true;
 656                         try {
 657                                 if(platform::modal_message("Really quit?", true)) {
 658                                         amode = ADVANCE_QUIT;
 659                                         platform::set_paused(false);
 660                                         platform::cancel_wait();
 661                                 }
 662                         } catch(...) {
 663                         }
 664                         on_quit_prompt = false;
 665                 }
 666
 667                 void send_analog(unsigned acid, int32_t x, int32_t y)
 668                 {
 669                         auto g2 = get_framebuffer_size();
 670                         if(controls.acid_is_mouse(acid)) {
 671                                 controls.analog(acid, x - g2.first / 2, y - g2.second / 2);
 672                         } else
 673                                 controls.analog(acid, x / 2 , y / 2);
 674                 }
 675
 676                 void on_click(int32_t x, int32_t y, uint32_t buttonmask) throw()
 677                 {
 678                         if(buttonmask & ~prev_mouse_mask & 1)
 679                                 send_analog(0, x, y);
 680                         if(buttonmask & ~prev_mouse_mask & 2)
 681                                 send_analog(1, x, y);
 682                         if(buttonmask & ~prev_mouse_mask & 4)
 683                                 send_analog(2, x, y);
 684                         prev_mouse_mask = buttonmask;
 685                 }
 686         } mywcb;
 687
 688         //If there is a pending load, perform it. Return 1 on successful load, 0 if nothing to load, -1 on load
 689         //failing.
 690         int handle_load()
 691         {
 692                 if(pending_load != "") {
 693                         system_corrupt = false;
 694                         if(!do_load_state(pending_load, loadmode)) {
 695                                 pending_load = "";
 696                                 return -1;
 697                         }
 698                         pending_load = "";
 699                         pending_reset_cycles = -1;
 700                         amode = ADVANCE_AUTO;
 701                         platform::cancel_wait();
 702                         platform::set_paused(false);
 703                         if(!system_corrupt) {
 704                                 location_special = SPECIAL_SAVEPOINT;
 705                                 update_movie_state();
 706                                 information_dispatch::do_status_update();
 707                                 platform::flush_command_queue();
 708                         }
 709                         return 1;
 710                 }
 711                 return 0;
 712         }
 713
 714         //If there are pending saves, perform them.
 715         void handle_saves()
 716         {
 717                 if(!queued_saves.empty()) {
 718                         stepping_into_save = true;
 719                         SNES::system.runtosave();
 720                         stepping_into_save = false;
 721                         for(auto i : queued_saves)
 722                                 do_save_state(i);
 723                 }
 724                 queued_saves.clear();
 725         }
 726
 727         //Do (delayed) reset. Return true if proper, false if forced at frame boundary.
 728         bool handle_reset(long cycles)
 729         {
 730                 if(cycles < 0)
 731                         return true;
 732                 video_refresh_done = false;
 733                 if(cycles == 0)
 734                         messages << "SNES reset" << std::endl;
 735                 else if(cycles > 0) {
 736                         messages << "SNES delayed reset not implemented (doing immediate reset)" << std::endl;
 737                         /* ... This code is just too buggy.
 738                         long cycles_executed = 0;
 739                         messages << "Executing delayed reset... This can take some time!" << std::endl;
 740                         while(cycles_executed < cycles && !video_refresh_done) {
 741                                 //Poll inputs once in a while to prevent activating watchdog.
 742                                 if(cycles_executed % 100 == 0)
 743                                         platform::flush_command_queue();
 744                                 SNES::cpu.op_step();
 745                                 cycles_executed++;
 746                         }
 747                         if(!video_refresh_done)
 748                                 messages << "SNES reset (delayed " << cycles_executed << ")" << std::endl;
 749                         else
 750                                 messages << "SNES reset (forced at " << cycles_executed << ")" << std::endl;
 751                         */
 752                 }
 753                 SNES::system.reset();
 754                 lua_callback_do_reset();
 755                 redraw_framebuffer(screen_nosignal);
 756                 if(video_refresh_done) {
 757                         to_wait_frame(get_utime());
 758                         return false;
 759                 }
 760                 return true;
 761         }
 762
 763         bool handle_corrupt()
 764         {
 765                 if(!system_corrupt)
 766                         return false;
 767                 while(system_corrupt) {
 768                         platform::cancel_wait();
 769                         platform::set_paused(true);
 770                         platform::flush_command_queue();
 771                         handle_load();
 772                         if(amode == ADVANCE_QUIT)
 773                                 return true;
 774                 }
 775                 return true;
 776         }
 777
 778         void print_controller_mappings()
 779         {
 780                 for(unsigned i = 0; i < 8; i++) {
 781                         std::string type = controls.lcid_to_typestring(i);
 782                         messages << "Physical controller mapping: Logical " << (i + 1) << " is physical " <<
 783                                 controls.lcid_to_pcid(i) << " (" << type << ")" << std::endl;
 784                 }
 785         }
 786 }
 787
 788 std::vector<std::string> get_jukebox_names()
 789 {
 790         return save_jukebox;
 791 }
 792
 793 void main_loop(struct loaded_rom& rom, struct moviefile& initial, bool load_has_to_succeed) throw(std::bad_alloc,
 794         std::runtime_error)
 795 {
 796         //Basic initialization.
 797         init_special_screens();
 798         our_rom = &rom;
 799         my_interface intrf;
 800         auto old_inteface = SNES::interface;
 801         SNES::interface = &intrf;
 802         SNES::system.init();
 803
 804         //Load our given movie.
 805         bool first_round = false;
 806         bool just_did_loadstate = false;
 807         try {
 808                 do_load_state(initial, LOAD_STATE_DEFAULT);
 809                 location_special = SPECIAL_SAVEPOINT;
 810                 update_movie_state();
 811                 first_round = our_movie.is_savestate;
 812                 just_did_loadstate = first_round;
 813         } catch(std::bad_alloc& e) {
 814                 OOM_panic();
 815         } catch(std::exception& e) {
 816                 messages << "ERROR: Can't load initial state: " << e.what() << std::endl;
 817                 if(load_has_to_succeed) {
 818                         messages << "FATAL: Can't load movie" << std::endl;
 819                         platform::fatal_error();
 820                 }
 821                 system_corrupt = true;
 822                 update_movie_state();
 823                 redraw_framebuffer(screen_corrupt);
 824         }
 825
 826         lua_callback_startup();
 827
 828         //print_controller_mappings();
 829         platform::set_paused(false);
 830         amode = ADVANCE_PAUSE;
 831         uint64_t time_x = get_utime();
 832         while(amode != ADVANCE_QUIT || !queued_saves.empty()) {
 833                 if(handle_corrupt()) {
 834                         first_round = our_movie.is_savestate;
 835                         just_did_loadstate = first_round;
 836                         continue;
 837                 }
 838                 long resetcycles = -1;
 839                 ack_frame_tick(get_utime());
 840                 if(amode == ADVANCE_SKIPLAG_PENDING)
 841                         amode = ADVANCE_SKIPLAG;
 842
 843                 if(!first_round) {
 844                         resetcycles = movb.new_frame_starting(amode == ADVANCE_SKIPLAG);
 845                         if(amode == ADVANCE_QUIT && queued_saves.empty())
 846                                 break;
 847                         bool delayed_reset = (resetcycles > 0);
 848                         pending_reset_cycles = -1;
 849                         if(!handle_reset(resetcycles)) {
 850                                 continue;
 851                         }
 852                         if(!delayed_reset) {
 853                                 handle_saves();
 854                         }
 855                         int r = 0;
 856                         if(queued_saves.empty())
 857                                 r = handle_load();
 858                         if(r > 0 || system_corrupt) {
 859                                 first_round = our_movie.is_savestate;
 860                                 amode = ADVANCE_PAUSE;
 861                                 just_did_loadstate = first_round;
 862                                 continue;
 863                         } else if(r < 0) {
 864                                 //Not exactly desriable, but this at least won't desync.
 865                                 amode = ADVANCE_PAUSE;
 866                         }
 867                 }
 868                 if(just_did_loadstate) {
 869                         //If we just loadstated, we are up to date.
 870                         if(amode == ADVANCE_QUIT)
 871                                 break;
 872                         amode = ADVANCE_PAUSE;
 873                         platform::cancel_wait();
 874                         platform::set_paused(true);
 875                         platform::flush_command_queue();
 876                         //We already have done the reset this frame if we are going to do one at all.
 877                         movb.get_movie().set_controls(controls.get(movb.get_movie().get_current_frame()));
 878                         just_did_loadstate = false;
 879                 }
 880                 frame_irq_time = get_utime() - time_x;
 881                 SNES::system.run();
 882                 time_x = get_utime();
 883                 if(amode == ADVANCE_AUTO)
 884                         platform::wait(to_wait_frame(get_utime()));
 885                 first_round = false;
 886                 lua_callback_do_frame();
 887         }
 888         information_dispatch::do_dump_end();
 889         SNES::interface = old_inteface;
 890 }