nkeynes@342: 
nkeynes@138: /**
nkeynes@446:  * $Id: gdrom.c,v 1.15 2007-10-16 12:28:42 nkeynes Exp $
nkeynes@138:  *
nkeynes@138:  * GD-Rom  access functions.
nkeynes@138:  *
nkeynes@138:  * Copyright (c) 2005 Nathan Keynes.
nkeynes@138:  *
nkeynes@138:  * This program is free software; you can redistribute it and/or modify
nkeynes@138:  * it under the terms of the GNU General Public License as published by
nkeynes@138:  * the Free Software Foundation; either version 2 of the License, or
nkeynes@138:  * (at your option) any later version.
nkeynes@138:  *
nkeynes@138:  * This program is distributed in the hope that it will be useful,
nkeynes@138:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nkeynes@138:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nkeynes@138:  * GNU General Public License for more details.
nkeynes@138:  */
nkeynes@138: 
nkeynes@138: #include <stdio.h>
nkeynes@237: #include <fcntl.h>
nkeynes@168: #include <errno.h>
nkeynes@138: #include "gdrom/ide.h"
nkeynes@138: #include "gdrom/gdrom.h"
nkeynes@143: #include "gdrom/packet.h"
nkeynes@138: #include "dream.h"
nkeynes@138: 
nkeynes@342: extern gdrom_disc_t gdrom_disc;
nkeynes@138: 
nkeynes@237: gdrom_image_class_t gdrom_image_classes[] = { &linux_device_class, &nrg_image_class, &cdi_image_class, NULL };
nkeynes@138: 
nkeynes@138: char *gdrom_mode_names[] = { "Mode1", "Mode2", "XA 1", "XA2", "Audio", "GD-Rom" };
nkeynes@138: uint32_t gdrom_sector_size[] = { 2048, 2336, 2048, 2324, 2352, 2336 };
nkeynes@138: 
nkeynes@138: gdrom_disc_t gdrom_image_open( const gchar *filename )
nkeynes@138: {
nkeynes@168:     const gchar *ext = strrchr(filename, '.');
nkeynes@168:     gdrom_disc_t disc = NULL;
nkeynes@237: 
nkeynes@237:     int fd = open( filename, O_RDONLY | O_NONBLOCK );
nkeynes@237:     FILE *f;
nkeynes@422:     int i;
nkeynes@168:     gdrom_image_class_t extclz = NULL;
nkeynes@168: 
nkeynes@237:     if( fd == -1 ) {
nkeynes@168: 	ERROR("Unable to open file '%s': %s", filename, strerror(errno));
nkeynes@168: 	return NULL;
nkeynes@168:     }
nkeynes@168: 
nkeynes@237:     f = fdopen(fd, "ro");
nkeynes@237: 
nkeynes@237: 
nkeynes@168:     /* try extensions */
nkeynes@168:     if( ext != NULL ) {
nkeynes@168: 	ext++; /* Skip the '.' */
nkeynes@168: 	for( i=0; gdrom_image_classes[i] != NULL; i++ ) {
nkeynes@237: 	    if( gdrom_image_classes[i]->extension != NULL &&
nkeynes@237: 		strcasecmp( gdrom_image_classes[i]->extension, ext ) == 0 ) {
nkeynes@168: 		extclz = gdrom_image_classes[i];
nkeynes@168: 		if( extclz->is_valid_file(f) ) {
nkeynes@168: 		    disc = extclz->open_image_file(filename, f);
nkeynes@168: 		    if( disc != NULL )
nkeynes@168: 			return disc;
nkeynes@168: 		}
nkeynes@168: 		break;
nkeynes@168: 	    }
nkeynes@168: 	}
nkeynes@168:     }
nkeynes@168: 
nkeynes@168:     /* Okay, fall back to magic */
nkeynes@237:     gboolean recognized = FALSE;
nkeynes@168:     for( i=0; gdrom_image_classes[i] != NULL; i++ ) {
nkeynes@168: 	if( gdrom_image_classes[i] != extclz &&
nkeynes@168: 	    gdrom_image_classes[i]->is_valid_file(f) ) {
nkeynes@237: 	    recognized = TRUE;
nkeynes@168: 	    disc = gdrom_image_classes[i]->open_image_file(filename, f);
nkeynes@168: 	    if( disc != NULL )
nkeynes@168: 		return disc;
nkeynes@168: 	}
nkeynes@168:     }
nkeynes@168: 
nkeynes@168:     fclose(f);
nkeynes@168:     return NULL;
nkeynes@138: }
nkeynes@138: 
nkeynes@138: void gdrom_mount_disc( gdrom_disc_t disc ) 
nkeynes@138: {
nkeynes@138:     gdrom_unmount_disc();
nkeynes@138:     gdrom_disc = disc;
nkeynes@342:     gdrom_image_dump_info( disc );
nkeynes@138: }
nkeynes@138: 
nkeynes@433: gboolean gdrom_mount_image( const gchar *filename )
nkeynes@138: {
nkeynes@138:     gdrom_disc_t disc = gdrom_image_open(filename);
nkeynes@433:     if( disc != NULL ) {
nkeynes@138: 	gdrom_mount_disc( disc );
nkeynes@433: 	return TRUE;
nkeynes@433:     }
nkeynes@433:     return FALSE;
nkeynes@138: }
nkeynes@138: 
nkeynes@138: void gdrom_unmount_disc( ) 
nkeynes@138: {
nkeynes@138:     if( gdrom_disc != NULL ) {
nkeynes@138: 	gdrom_disc->close(gdrom_disc);
nkeynes@138:     }
nkeynes@138:     gdrom_disc = NULL;
nkeynes@342: 
nkeynes@138: }
nkeynes@138: