/*************************************************************************** mame.c Controls execution of the core MAME system. Copyright Nicola Salmoria and the MAME Team. Visit http://mamedev.org for licensing and usage restrictions. **************************************************************************** Since there has been confusion in the past over the order of initialization and other such things, here it is, all spelled out as of January, 2008: main() - does platform-specific init - calls mame_execute() [mame.c] mame_execute() [mame.c] - calls mame_validitychecks() [validity.c] to perform validity checks on all compiled drivers - begins resource tracking (level 1) - calls create_machine [mame.c] to initialize the running_machine structure - calls init_machine() [mame.c] init_machine() [mame.c] - calls fileio_init() [fileio.c] to initialize file I/O info - calls config_init() [config.c] to initialize configuration system - calls input_init() [input.c] to initialize the input system - calls output_init() [output.c] to initialize the output system - calls state_init() [state.c] to initialize save state system - calls state_save_allow_registration() [state.c] to allow registrations - calls palette_init() [palette.c] to initialize palette system - calls render_init() [render.c] to initialize the rendering system - calls ui_init() [ui.c] to initialize the user interface - calls generic_machine_init() [machine/generic.c] to initialize generic machine structures - calls generic_video_init() [video/generic.c] to initialize generic video structures - calls generic_sound_init() [audio/generic.c] to initialize generic sound structures - calls timer_init() [timer.c] to reset the timer system - calls osd_init() [osdepend.h] to do platform-specific initialization - calls input_port_init() [inptport.c] to set up the input ports - calls rom_init() [romload.c] to load the game's ROMs - calls memory_init() [memory.c] to process the game's memory maps - calls watchdog_init() [watchdog.c] to initialize the watchdog system - calls the driver's DRIVER_INIT callback - calls device_list_start() [devintrf.c] to start any devices - calls video_init() [video.c] to start the video system - calls tilemap_init() [tilemap.c] to start the tilemap system - calls crosshair_init() [crsshair.c] to configure the crosshairs - calls sound_init() [sound.c] to start the audio system - calls debugger_init() [debugger.c] to set up the debugger - calls the driver's MACHINE_START, SOUND_START, and VIDEO_START callbacks - calls cheat_init() [cheat.c] to initialize the cheat system - calls image_init() [image.c] to initialize the image system - calls config_load_settings() [config.c] to load the configuration file - calls nvram_load [machine/generic.c] to load NVRAM - calls ui_display_startup_screens() [ui.c] to display the the startup screens - begins resource tracking (level 2) - calls soft_reset() [mame.c] to reset all systems -------------------( at this point, we're up and running )---------------------- - calls scheduler->timeslice() [schedule.c] over and over until we exit - ends resource tracking (level 2), freeing all auto_mallocs and timers - calls the nvram_save() [machine/generic.c] to save NVRAM - calls config_save_settings() [config.c] to save the game's configuration - calls all registered exit routines [mame.c] - ends resource tracking (level 1), freeing all auto_mallocs and timers - exits the program ***************************************************************************/ #include "emu.h" #include "emuopts.h" #include "osdepend.h" #include "config.h" #include "debugger.h" #include "render.h" #include "cheat.h" #include "ui.h" #include "uiinput.h" #include "crsshair.h" #include "validity.h" #include "debug/debugcon.h" #include /*************************************************************************** GLOBAL VARIABLES ***************************************************************************/ /* started empty? */ static bool started_empty; static bool print_verbose = false; static running_machine *global_machine; /* output channels */ static output_delegate output_cb[OUTPUT_CHANNEL_COUNT] = { output_delegate(FUNC(mame_file_output_callback), stderr), // OUTPUT_CHANNEL_ERROR output_delegate(FUNC(mame_file_output_callback), stderr), // OUTPUT_CHANNEL_WARNING output_delegate(FUNC(mame_file_output_callback), stdout), // OUTPUT_CHANNEL_INFO #ifdef MAME_DEBUG output_delegate(FUNC(mame_file_output_callback), stdout), // OUTPUT_CHANNEL_DEBUG #else output_delegate(FUNC(mame_null_output_callback), stdout), // OUTPUT_CHANNEL_DEBUG #endif output_delegate(FUNC(mame_file_output_callback), stdout), // OUTPUT_CHANNEL_VERBOSE output_delegate(FUNC(mame_file_output_callback), stdout) // OUTPUT_CHANNEL_LOG }; /*************************************************************************** CORE IMPLEMENTATION ***************************************************************************/ /*------------------------------------------------- mame_is_valid_machine - return true if the given machine is valid -------------------------------------------------*/ int mame_is_valid_machine(running_machine &machine) { return (&machine == global_machine); } /*------------------------------------------------- mame_execute - run the core emulation -------------------------------------------------*/ int mame_execute(emu_options &options, osd_interface &osd) { bool firstgame = true; bool firstrun = true; // extract the verbose printing option if (options.verbose()) print_verbose = true; // loop across multiple hard resets bool exit_pending = false; int error = MAMERR_NONE; while (error == MAMERR_NONE && !exit_pending) { // if no driver, use the internal empty driver const game_driver *system = options.system(); if (system == NULL) { system = &GAME_NAME(___empty); if (firstgame) started_empty = true; } firstgame = false; // parse any INI files as the first thing if (options.read_config()) { options.revert(OPTION_PRIORITY_INI); astring errors; options.parse_standard_inis(errors); } // otherwise, perform validity checks before anything else if (system != NULL) { validity_checker valid(options); valid.check_shared_source(*system); } // create the machine configuration machine_config config(*system, options); // create the machine structure and driver running_machine machine(config, osd, started_empty); ui_show_mouse(machine.system().flags & GAME_CLICKABLE_ARTWORK); // looooong term: remove this global_machine = &machine; // run the machine error = machine.run(firstrun); firstrun = false; // check the state of the machine if (machine.new_driver_pending()) { options.set_system_name(machine.new_driver_name()); firstrun = true; } if (machine.exit_pending()) exit_pending = true; // machine will go away when we exit scope global_machine = NULL; } // return an error return error; } /*************************************************************************** OUTPUT MANAGEMENT ***************************************************************************/ /*------------------------------------------------- mame_set_output_channel - configure an output channel -------------------------------------------------*/ output_delegate mame_set_output_channel(output_channel channel, output_delegate callback) { assert(channel < OUTPUT_CHANNEL_COUNT); assert(!callback.isnull()); /* return the originals if requested */ output_delegate prevcb = output_cb[channel]; /* set the new ones */ output_cb[channel] = callback; return prevcb; } /*------------------------------------------------- mame_file_output_callback - default callback for file output -------------------------------------------------*/ void mame_file_output_callback(FILE *param, const char *format, va_list argptr) { vfprintf(param, format, argptr); } /*------------------------------------------------- mame_null_output_callback - default callback for no output -------------------------------------------------*/ void mame_null_output_callback(FILE *param, const char *format, va_list argptr) { } /*------------------------------------------------- mame_printf_error - output an error to the appropriate callback -------------------------------------------------*/ void mame_printf_error(const char *format, ...) { va_list argptr; /* do the output */ va_start(argptr, format); output_cb[OUTPUT_CHANNEL_ERROR](format, argptr); va_end(argptr); } /*------------------------------------------------- mame_printf_warning - output a warning to the appropriate callback -------------------------------------------------*/ void mame_printf_warning(const char *format, ...) { va_list argptr; /* do the output */ va_start(argptr, format); output_cb[OUTPUT_CHANNEL_WARNING](format, argptr); va_end(argptr); } /*------------------------------------------------- mame_printf_info - output info text to the appropriate callback -------------------------------------------------*/ void mame_printf_info(const char *format, ...) { va_list argptr; /* do the output */ va_start(argptr, format); output_cb[OUTPUT_CHANNEL_INFO](format, argptr); va_end(argptr); } /*------------------------------------------------- mame_printf_verbose - output verbose text to the appropriate callback -------------------------------------------------*/ void mame_printf_verbose(const char *format, ...) { va_list argptr; /* if we're not verbose, skip it */ if (!print_verbose) return; /* do the output */ va_start(argptr, format); output_cb[OUTPUT_CHANNEL_VERBOSE](format, argptr); va_end(argptr); } /*------------------------------------------------- mame_printf_debug - output debug text to the appropriate callback -------------------------------------------------*/ void mame_printf_debug(const char *format, ...) { va_list argptr; /* do the output */ va_start(argptr, format); output_cb[OUTPUT_CHANNEL_DEBUG](format, argptr); va_end(argptr); } /*------------------------------------------------- mame_printf_log - output log text to the appropriate callback -------------------------------------------------*/ #ifdef UNUSED_FUNCTION void mame_printf_log(const char *format, ...) { va_list argptr; /* do the output */ va_start(argptr, format); output_cb[OUTPUT_CHANNEL_LOG])(format, argptr); va_end(argptr); } #endif /*************************************************************************** MISCELLANEOUS ***************************************************************************/ /*------------------------------------------------- popmessage - pop up a user-visible message -------------------------------------------------*/ void CLIB_DECL popmessage(const char *format, ...) { // if the format is NULL, it is a signal to clear the popmessage if (format == NULL) ui_popup_time(0, " "); // otherwise, generate the buffer and call the UI to display the message else { astring temp; va_list arg; // dump to the buffer va_start(arg, format); temp.vprintf(format, arg); va_end(arg); // pop it in the UI ui_popup_time(temp.len() / 40 + 2, "%s", temp.cstr()); } } /*------------------------------------------------- logerror - log to the debugger and any other OSD-defined output streams -------------------------------------------------*/ void CLIB_DECL logerror(const char *format, ...) { va_list arg; va_start(arg, format); vlogerror(format, arg); va_end(arg); } /*------------------------------------------------- vlogerror - log to the debugger and any other OSD-defined output streams -------------------------------------------------*/ void CLIB_DECL vlogerror(const char *format, va_list arg) { if (global_machine != NULL) global_machine->vlogerror(format, arg); }