lxdream 0.9.1| filename | src/gdrom/gdrom.c |
| changeset | 489:45c8ddcf52cb |
| prev | 464:8e099fad42a6 |
| next | 492:84e33e4dda1c |
| author | nkeynes |
| date | Sun Nov 04 05:07:49 2007 +0000 (14 years ago) |
| permissions | -rw-r--r-- |
| last change | Test for presence of linux/cdrom.h at configure time, and only build the linux driver if it's found successfully |
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2 /**
3 * $Id: gdrom.c,v 1.18 2007-11-04 05:07:49 nkeynes Exp $
4 *
5 * GD-Rom access functions.
6 *
7 * Copyright (c) 2005 Nathan Keynes.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 */
20 #include <stdio.h>
21 #include <fcntl.h>
22 #include <errno.h>
23 #include "gdrom/ide.h"
24 #include "gdrom/gdrom.h"
25 #include "gdrom/packet.h"
26 #include "dream.h"
28 extern gdrom_disc_t gdrom_disc;
30 gdrom_image_class_t gdrom_image_classes[] = { &cdrom_device_class, &nrg_image_class, &cdi_image_class, NULL };
32 char *gdrom_mode_names[] = { "Mode1", "Mode2", "XA 1", "XA2", "Audio", "GD-Rom" };
33 uint32_t gdrom_sector_size[] = { 2048, 2336, 2048, 2324, 2352, 2336 };
35 gdrom_disc_t gdrom_image_open( const gchar *filename )
36 {
37 const gchar *ext = strrchr(filename, '.');
38 gdrom_disc_t disc = NULL;
40 int fd = open( filename, O_RDONLY | O_NONBLOCK );
41 FILE *f;
42 int i;
43 gdrom_image_class_t extclz = NULL;
45 if( fd == -1 ) {
46 return NULL;
47 }
49 f = fdopen(fd, "ro");
52 /* try extensions */
53 if( ext != NULL ) {
54 ext++; /* Skip the '.' */
55 for( i=0; gdrom_image_classes[i] != NULL; i++ ) {
56 if( gdrom_image_classes[i]->extension != NULL &&
57 strcasecmp( gdrom_image_classes[i]->extension, ext ) == 0 ) {
58 extclz = gdrom_image_classes[i];
59 if( extclz->is_valid_file(f) ) {
60 disc = extclz->open_image_file(filename, f);
61 if( disc != NULL )
62 return disc;
63 }
64 break;
65 }
66 }
67 }
69 /* Okay, fall back to magic */
70 gboolean recognized = FALSE;
71 for( i=0; gdrom_image_classes[i] != NULL; i++ ) {
72 if( gdrom_image_classes[i] != extclz &&
73 gdrom_image_classes[i]->is_valid_file(f) ) {
74 recognized = TRUE;
75 disc = gdrom_image_classes[i]->open_image_file(filename, f);
76 if( disc != NULL )
77 return disc;
78 }
79 }
81 fclose(f);
82 return NULL;
83 }
85 void gdrom_mount_disc( gdrom_disc_t disc )
86 {
87 gdrom_unmount_disc();
88 gdrom_disc = disc;
89 gdrom_image_dump_info( disc );
90 }
92 gboolean gdrom_mount_image( const gchar *filename )
93 {
94 gdrom_disc_t disc = gdrom_image_open(filename);
95 if( disc != NULL ) {
96 gdrom_mount_disc( disc );
97 return TRUE;
98 }
99 return FALSE;
100 }
102 void gdrom_unmount_disc( )
103 {
104 if( gdrom_disc != NULL ) {
105 gdrom_disc->close(gdrom_disc);
106 }
107 gdrom_disc = NULL;
109 }
111 gdrom_disc_t gdrom_get_current_disc()
112 {
113 return gdrom_disc;
114 }
.