/**

 * $Id$

 *

 * 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 <unistd.h>

#include <getopt.h>

#include "dream.h"

#include "config.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"

#define S3M_PLAYER "s3mplay.bin"

char *option_list = "a:m:s:A:V:v:puhbd:c:t:T:xD";

struct option longopts[1] = { { NULL, 0, 0, 0 } };

char *aica_program = NULL;

char *s3m_file = NULL;

const char *disc_file = NULL;

char *display_driver_name = NULL;

char *audio_driver_name = NULL;

char *trace_regions = NULL;

gboolean start_immediately = FALSE;

gboolean headless = FALSE;

gboolean without_bios = FALSE;

gboolean use_xlat = TRUE;

gboolean show_debugger = FALSE;

uint32_t time_secs = 0;

uint32_t time_nanos = 0;

extern uint32_t sh4_cpu_multiplier;

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

{

    int opt, i;

    double t;

    gboolean display_ok;

    install_crash_handler();

    gdrom_get_native_devices();

#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 'c': /* Config file */

	    lxdream_set_config_filename(optarg);

	    break;

	case 'd': /* Mount disc */

	    disc_file = optarg;

	    break;

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

	    show_debugger = TRUE;

	    break;

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

	    t = strtod(optarg, NULL);

	    sh4_cpu_multiplier = (int)(1000.0/t);

	    break;

	case 's': /* AICA-only w/ S3M player */

	    aica_program = S3M_PLAYER;

	    s3m_file = optarg;

	    break;

	case 'A': /* Audio driver */

	    audio_driver_name = optarg;

	    break;

	case 'V': /* Video driver */

	    display_driver_name = optarg;

	    break;

	case 'p': /* Start immediately */

	    start_immediately = TRUE;

    	    break;

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

	    dcload_set_allow_unsafe(TRUE);

	    break;

    	case 'b': /* No BIOS */

    	    without_bios = TRUE;

    	    break;

        case 'h': /* Headless */

            headless = TRUE;

            break;

	case 't': /* Time limit */

	    t = strtod(optarg, NULL);

	    time_secs = (uint32_t)t;

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

	    break;

	case 'T': /* trace regions */

	    trace_regions = optarg;

	    break;

	case 'v': /* Log verbosity */

	    if( !set_global_log_level(optarg) ) {

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

	    }

	    break;

	case 'x': /* Disable translator */

	    use_xlat = FALSE;

	    break;

	}

    }

    lxdream_load_config( );

    if( aica_program == NULL ) {

	dreamcast_init();

    } else {

	dreamcast_configure_aica_only();

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

	if( s3m_file != NULL ) {

	    mem_load_block( s3m_file, 0x00810000, 2048*1024 - 0x10000 );

	}

    }

    mem_set_trace( trace_regions, TRUE );

    if( without_bios ) {

    	bios_install();

	dcload_install();

    }

    audio_driver_t audio_driver = get_audio_driver_by_name(audio_driver_name);

    if( audio_driver == NULL ) {

	ERROR( "Audio driver '%s' not found, aborting.", audio_driver_name );

	exit(2);

    } else if( audio_set_driver( audio_driver, 44100, AUDIO_FMT_16ST ) == FALSE ) {

	ERROR( "Failed to initialize audio driver '%s', using null driver", 

	       audio_driver->name );

	audio_set_driver( &audio_null_driver, 44100, AUDIO_FMT_16ST );

    }

    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_menu_open_file(argv[optind]);

	if( !ok ) {

	    ok = file_load_magic( argv[optind] );

	}

	if( !ok ) {

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

	}

	start_immediately = ok;

    }

    if( disc_file != NULL ) {

	gdrom_menu_open_file( disc_file );

    }

    if( gdrom_get_current_disc() == NULL ) {

	disc_file = lxdream_get_config_value( CONFIG_GDROM );

	if( disc_file != NULL ) {

	    gdrom_menu_open_file( disc_file );

	}

    }

    sh4_set_use_xlat( use_xlat );

    if( start_immediately ) {

        if( dreamcast_can_run() ) {

	    if( time_nanos != 0 || time_secs != 0 ) {

	        dreamcast_run_for(time_secs, time_nanos);

		return 0;

	    } else {

	        dreamcast_run();

	    }

	} else {

	    ERROR( "Unable to start dreamcast: no program/bios loaded" );

	}

    }

    if( !headless ) {

	gui_main_loop();

    }

    return 0;

}