/**

 * $Id$

 *

 * Main program, initializes dreamcast and gui, then passes control off to

 * the main loop. 

 *

 * Copyright (c) 2005 Nathan Keynes.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

#include <stdlib.h>

#include <unistd.h>

#include <getopt.h>

#include <libisofs/libisofs.h>

#include "lxdream.h"

#include "lxpaths.h"

#include "gettext.h"

#include "mem.h"

#include "dreamcast.h"

#include "dream.h"

#include "display.h"

#include "gui.h"

#include "gdlist.h"

#include "syscall.h"

#include "loader.h"

#include "aica/audio.h"

#include "gdrom/gdrom.h"

#include "maple/maple.h"

#include "sh4/sh4.h"

#include "aica/armdasm.h"

#include "vmu/vmulist.h"

#include "serial.h"

#include "hotkeys.h"

#include "plugin.h"

char *option_list = "a:A:bc:e:dfg:G:hHl:m:npt:T:uvV:x?";

struct option longopts[] = {

        { "aica", required_argument, NULL, 'a' },

        { "audio", required_argument, NULL, 'A' },

        { "biosless", no_argument, NULL, 'b' },

        { "config", required_argument, NULL, 'c' },

        { "debugger", no_argument, NULL, 'd' },

        { "execute", required_argument, NULL, 'e' },

        { "fullscreen", no_argument, NULL, 'f' },

        { "gdb-sh4", required_argument, NULL, 'g' },  

        { "gdb-arm", required_argument, NULL, 'G' },  

        { "help", no_argument, NULL, 'h' },

        { "headless", no_argument, NULL, 'H' },

        { "log", required_argument, NULL,'l' }, 

        { "multiplier", required_argument, NULL, 'm' },

        { "run-time", required_argument, NULL, 't' },

        { "trace", required_argument, NULL, 'T' },

        { "unsafe", no_argument, NULL, 'u' },

        { "video", no_argument, NULL, 'V' },

        { "version", no_argument, NULL, 'v' }, 

        { NULL, 0, 0, 0 } };

char *aica_program = NULL;

char *display_driver_name = NULL;

char *audio_driver_name = NULL;

char *trace_regions = NULL;

char *sh4_gdb_port = NULL;

char *arm_gdb_port = NULL;

gboolean start_immediately = FALSE;

gboolean no_start = FALSE;

gboolean headless = FALSE;

gboolean use_xlat = TRUE;

gboolean show_debugger = FALSE;

gboolean show_fullscreen = FALSE;

gboolean use_bootrom = TRUE;

extern uint32_t sh4_cpu_multiplier;

static void print_version()

{

    printf( "lxdream %s\n", lxdream_full_version );

}

static void print_usage()

{

    print_version();

    printf( "Usage: lxdream %s [options] [disc-file] [save-state]\n\n", lxdream_full_version );

    printf( "Options:\n" );

    printf( "   -a, --aica=PROGFILE    %s\n", _("Run the AICA SPU only, with the supplied program") );

    printf( "   -A, --audio=DRIVER     %s\n", _("Use the specified audio driver (? to list)") );

    printf( "   -b, --biosless         %s\n", _("Run without the BIOS boot rom even if available") );

    printf( "   -c, --config=CONFFILE  %s\n", _("Load configuration from CONFFILE") );

    printf( "   -e, --execute=PROGRAM  %s\n", _("Load and execute the given SH4 program") );

    printf( "   -d, --debugger         %s\n", _("Start in debugger mode") );

    printf( "   -f, --fullscreen       %s\n", _("Start in fullscreen mode") );

    printf( "   -g, --gdb-sh4=PORT     %s\n", _("Start GDB remote server on PORT for SH4") );

    printf( "   -G, --gdb-arm=PORT     %s\n", _("Start GDB remote server on PORT for ARM") );

    printf( "   -h, --help             %s\n", _("Display this usage information") );

    printf( "   -H, --headless         %s\n", _("Run in headless (no video) mode") );

    printf( "   -l, --log=LEVEL        %s\n", _("Set the output log level") );

    printf( "   -m, --multiplier=SCALE %s\n", _("Set the SH4 multiplier (1.0 = fullspeed)") );

    printf( "   -n                     %s\n", _("Don't start running immediately") );

    printf( "   -p                     %s\n", _("Start running immediately on startup") );

    printf( "   -t, --run-time=SECONDS %s\n", _("Run for the specified number of seconds") );

    printf( "   -T, --trace=REGIONS    %s\n", _("Output trace information for the named regions") );

    printf( "   -u, --unsafe           %s\n", _("Allow unsafe dcload syscalls") );

    printf( "   -v, --version          %s\n", _("Print the lxdream version string") );

    printf( "   -V, --video=DRIVER     %s\n", _("Use the specified video driver (? to list)") );

    printf( "   -x                     %s\n", _("Disable the SH4 translator") );

}

static void bind_gettext_domain()

{

#ifdef ENABLE_NLS

    bindtextdomain( PACKAGE, get_locale_path() );

    textdomain(PACKAGE);

#endif

}

int main (int argc, char *argv[])

{

    int opt;

    double t;

    gboolean display_ok, have_disc = FALSE, have_save = FALSE, have_exec = FALSE;

    uint32_t time_secs, time_nanos;

    const char *exec_name = NULL;

    install_crash_handler();

    bind_gettext_domain();

    display_ok = gui_parse_cmdline(&argc, &argv);

    while( (opt = getopt_long( argc, argv, option_list, longopts, NULL )) != -1 ) {

        switch( opt ) {

        case 'a': /* AICA only mode - argument is an AICA program */

            aica_program = optarg;

            break;

        case 'A': /* Audio driver */

            audio_driver_name = optarg;

            break;

        case 'b': /* No Boot rom */

            use_bootrom = FALSE;

        case 'c': /* Config file */

            lxdream_set_config_filename(optarg);

            break;

        case 'd': /* Launch w/ debugger */

            show_debugger = TRUE;

            break;

        case 'e':

            exec_name = optarg;

            break;

        case 'f':

            show_fullscreen = TRUE;

            break;

        case 'g':

            sh4_gdb_port = optarg;

            break;

        case 'G':

            arm_gdb_port = optarg;

            break;

        case 'h': /* help */

        case '?':

            print_usage();

            exit(0);

            break;

        case 'H': /* Headless - shorthand for -V null */

            display_driver_name = "null";

            break;

        case 'l': /* Log verbosity */

            if( !set_global_log_level(optarg) ) {

                ERROR( "Unrecognized log level '%s'", optarg );

            }

            break;

        case 'm': /* Set SH4 CPU clock multiplier (default 0.5) */

            t = strtod(optarg, NULL);

            sh4_cpu_multiplier = (int)(1000.0/t);

            break;

        case 'n': /* Don't start immediately */

            no_start = TRUE;

            start_immediately = FALSE;

            break;

        case 'p': /* Start immediately */

            start_immediately = TRUE;

            no_start = FALSE;

            break;

        case 't': /* Time limit + auto quit */

            t = strtod(optarg, NULL);

            time_secs = (uint32_t)t;

            time_nanos = (int)((t - time_secs) * 1000000000);

            dreamcast_set_run_time( time_secs, time_nanos );

            dreamcast_set_exit_on_stop( TRUE );

            break;

        case 'T': /* trace regions */

            trace_regions = optarg;

            set_global_log_level("trace");

            break;

        case 'u': /* Allow unsafe dcload syscalls */

            dcload_set_allow_unsafe(TRUE);

            break;

        case 'v': 

            print_version();

            exit(0);

            break;

        case 'V': /* Video driver */

            display_driver_name = optarg;

            break;

        case 'x': /* Disable translator */

            use_xlat = FALSE;

            break;

        }

    }

#ifdef ENABLE_SHARED

    plugin_init();

#endif

    lxdream_make_config_dir( );

    lxdream_load_config( );

    if( audio_driver_name != NULL && strcmp(audio_driver_name, "?") == 0 ) {

        print_version();

        print_audio_drivers(stdout);

        exit(0);

    }

    if( display_driver_name != NULL && strcmp(display_driver_name,"?") == 0 ) {

        print_version();

        print_display_drivers(stdout);

        exit(0);

    }

    iso_init();

    gdrom_list_init();

    vmulist_init();

    if( aica_program == NULL ) {

        dreamcast_init(use_bootrom);

    } else {

        dreamcast_configure_aica_only();

        mem_load_block( aica_program, 0x00800000, 2048*1024 );

    }

    mem_set_trace( trace_regions, TRUE );

    audio_init_driver( audio_driver_name );

    headless = display_driver_name != NULL && strcasecmp( display_driver_name, "null" ) == 0;

    if( headless ) {

        display_set_driver( &display_null_driver );

    } else {

        gui_init(show_debugger, show_fullscreen);

        display_driver_t display_driver = get_display_driver_by_name(display_driver_name);

        if( display_driver == NULL ) {

            ERROR( "Video driver '%s' not found, aborting.", display_driver_name );

            exit(2);

        } else if( display_set_driver( display_driver ) == FALSE ) {

            ERROR( "Video driver '%s' failed to initialize (could not connect to display?)", 

                    display_driver->name );

            exit(2);

        }

    }

    hotkeys_init();

    serial_init();

    maple_reattach_all();

    INFO( "%s! ready...", APP_NAME );

    for( ; optind < argc; optind++ ) {

        ERROR err;

        lxdream_file_type_t type = file_identify(argv[optind], -1, &err);

        if( type == FILE_SAVE_STATE ) {

            if( have_save ) {

                ERROR( "Multiple save states given on command-line, ignoring %s", argv[optind] );

            } else {

                have_save = dreamcast_load_state(argv[optind]);

                if( !have_save )

                    no_start = TRUE;

            }

        } else {

            if( have_disc ) {

                ERROR( "Multiple GD-ROM discs given on command-line, ignoring %s", argv[optind] );

            } else {

                have_disc = gdrom_mount_image(argv[optind], &err);

                if( !have_disc )

                    no_start = TRUE;

            }

        }

    }

    if( exec_name != NULL ) {

        ERROR err;

        if( have_save ) {

            ERROR( "Both a save state and an executable were specified, ignoring %s", exec_name );

        } else {

            have_exec = file_load_exec( exec_name, &err );

            if( !have_exec )

                no_start = TRUE;

        }

    }

    if( !no_start && (have_exec || have_disc || have_save) ) {

        start_immediately = TRUE;

    }

    if( gdrom_get_current_disc() == NULL ) {

        ERROR err;

        gchar *disc_file = lxdream_get_global_config_path_value( CONFIG_GDROM );

        if( disc_file != NULL ) {

            gboolean ok = gdrom_mount_image( disc_file, &err );

            g_free(disc_file);

            if( !ok ) {

                WARN( err.msg );

            }

        }

    }

    sh4_translate_set_enabled( use_xlat );

    /* If requested, start the gdb server immediately before we go into the main

     * loop.

     */

    if( sh4_gdb_port != NULL ) {

        gdb_init_server( NULL, strtol(sh4_gdb_port,NULL,0), &sh4_cpu_desc, TRUE );

    }

    if( arm_gdb_port != NULL ) {

        gdb_init_server( NULL, strtol(arm_gdb_port,NULL,0), &arm_cpu_desc, TRUE );

    }

    if( headless ) {

        dreamcast_run();

    } else {

        gui_main_loop( start_immediately && dreamcast_can_run() );

    }

    dreamcast_shutdown();

    return 0;

}