/**

 * $Id$

 *

 * 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 <glib/gi18n.h>

#include "lxdream.h"

#include "syscall.h"

#include "mem.h"

#include "dreamcast.h"

#include "display.h"

#include "loader.h"

#include "gui.h"

#include "aica/audio.h"

#include "gdrom/gdrom.h"

#include "maple/maple.h"

#include "sh4/sh4.h"

char *option_list = "a:A:c:dhHl:m:npt:T:uvV:x?";

struct option longopts[] = {

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

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

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

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

        { "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;

gboolean start_immediately = FALSE;

gboolean no_start = FALSE;

gboolean headless = FALSE;

gboolean use_xlat = TRUE;

gboolean show_debugger = FALSE;

extern uint32_t sh4_cpu_multiplier;

void print_version()

{

    printf( "lxdream " APP_VERSION "\n" );

}

void print_usage()

{

    print_version();

    printf( "Usage: lxdream [options] [disc-file] [program-file]\n\n" );

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

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

    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") );

}

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

{

    int opt;

    double t;

    gboolean display_ok;

    uint32_t time_secs, time_nanos;

    install_crash_handler();

#ifdef ENABLE_NLS

    bindtextdomain (PACKAGE, PACKAGE_LOCALE_DIR);

    textdomain (PACKAGE);

#endif

    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;

        if( strcmp(audio_driver_name, "?") == 0 ) {

            print_version();

            print_audio_drivers(stdout);

            exit(0);

        }

        break;

	case 'c': /* Config file */

	    lxdream_set_config_filename(optarg);

	    break;

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

	    show_debugger = TRUE;

	    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;

        if( strcmp(display_driver_name,"?") == 0 ) {

            print_version();

            print_display_drivers(stdout);

            exit(0);

        }

        break;

	case 'x': /* Disable translator */

	    use_xlat = FALSE;

	    break;

	}

    }

    lxdream_load_config( );

    gdrom_list_init();

    if( aica_program == NULL ) {

        dreamcast_init();

    } 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, 44100, AUDIO_FMT_16ST );

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

    if( headless ) {

        display_set_driver( &display_null_driver );

    } else {

        gui_init(show_debugger);

        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);

        }

    }

    maple_reattach_all();

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

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

        gboolean ok = gdrom_mount_image(argv[optind]);

        if( !ok ) {

            ok = file_load_magic( argv[optind] );

        }

        if( !ok ) {

            ERROR( "Unrecognized file '%s'", argv[optind] );

        }

        if( !no_start ) {

            start_immediately = ok;

        }

    }

    if( gdrom_get_current_disc() == NULL ) {

        const gchar *disc_file = lxdream_get_config_value( CONFIG_GDROM );

        if( disc_file != NULL ) {

            gdrom_mount_image( disc_file );

        }

    }

    sh4_set_use_xlat( use_xlat );

    if( headless ) {

        dreamcast_run();

    } else {

        gui_main_loop( start_immediately && dreamcast_can_run() );

    }

    dreamcast_shutdown();

    return 0;

}