lxdream 0.9.1| filename | src/gdrom/gdrom.c |
| changeset | 837:4eae2ddccf9c |
| prev | 759:f16975739abc |
| next | 1023:264e2fd90be8 |
| author | nkeynes |
| date | Wed Oct 29 23:51:58 2008 +0000 (15 years ago) |
| permissions | -rw-r--r-- |
| last change | Use regparam calling conventions for all functions called from translated code, along with a few other high-use functions. Can probably extend this to all functions, but as it is this is a nice performance boost |
| view | annotate | diff | log | raw |
2 /**
3 * $Id$
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 <glib/gutils.h>
24 #include "gdrom/ide.h"
25 #include "gdrom/gdrom.h"
26 #include "gdrom/gddriver.h"
27 #include "gdrom/packet.h"
28 #include "dream.h"
30 extern gdrom_disc_t gdrom_disc;
32 DEFINE_HOOK( gdrom_disc_change_hook, gdrom_disc_change_hook_t )
34 static void gdrom_fire_disc_changed( gdrom_disc_t disc )
35 {
36 CALL_HOOKS( gdrom_disc_change_hook, disc, disc == NULL ? NULL : disc->name );
37 }
39 gdrom_image_class_t gdrom_image_classes[] = { &cdrom_device_class,
40 &nrg_image_class,
41 &cdi_image_class,
42 &gdi_image_class,
43 NULL };
45 char *gdrom_mode_names[] = { "Mode 0", "Mode 1", "Mode 2", "Mode 2 Form 1", "Mode 2 Form 2", "Audio",
46 "Mode 2 semiraw", "XA Raw", "Non-XA Raw" };
47 uint32_t gdrom_sector_size[] = { 0, 2048, 2336, 2048, 2324, 2352, 2336, 2352, 2352 };
49 gdrom_disc_t gdrom_image_open( const gchar *inFilename )
50 {
51 const gchar *filename = inFilename;
52 const gchar *ext = strrchr(filename, '.');
53 gdrom_disc_t disc = NULL;
54 int fd;
55 FILE *f;
56 int i;
57 gdrom_image_class_t extclz = NULL;
59 // Check for a url-style filename.
60 char *lizard_lips = strstr( filename, "://" );
61 if( lizard_lips != NULL ) {
62 gchar *path = lizard_lips + 3;
63 int method_len = (lizard_lips-filename);
64 gchar method[method_len + 1];
65 memcpy( method, filename, method_len );
66 method[method_len] = '\0';
68 if( strcasecmp( method, "file" ) == 0 ) {
69 filename = path;
70 } else if( strcasecmp( method, "dvd" ) == 0 ||
71 strcasecmp( method, "cd" ) == 0 ||
72 strcasecmp( method, "cdrom" ) ) {
73 return cdrom_open_device( method, path );
74 } else {
75 ERROR( "Unrecognized URL method '%s' in filename '%s'", method, filename );
76 return NULL;
77 }
78 }
80 fd = open( filename, O_RDONLY | O_NONBLOCK );
81 if( fd == -1 ) {
82 return NULL;
83 }
85 f = fdopen(fd, "ro");
88 /* try extensions */
89 if( ext != NULL ) {
90 ext++; /* Skip the '.' */
91 for( i=0; gdrom_image_classes[i] != NULL; i++ ) {
92 if( gdrom_image_classes[i]->extension != NULL &&
93 strcasecmp( gdrom_image_classes[i]->extension, ext ) == 0 ) {
94 extclz = gdrom_image_classes[i];
95 if( extclz->is_valid_file(f) ) {
96 disc = extclz->open_image_file(filename, f);
97 if( disc != NULL )
98 return disc;
99 }
100 break;
101 }
102 }
103 }
105 /* Okay, fall back to magic */
106 gboolean recognized = FALSE;
107 for( i=0; gdrom_image_classes[i] != NULL; i++ ) {
108 if( gdrom_image_classes[i] != extclz &&
109 gdrom_image_classes[i]->is_valid_file(f) ) {
110 recognized = TRUE;
111 disc = gdrom_image_classes[i]->open_image_file(filename, f);
112 if( disc != NULL )
113 return disc;
114 }
115 }
117 fclose(f);
118 return NULL;
119 }
121 void gdrom_mount_disc( gdrom_disc_t disc )
122 {
123 if( disc != gdrom_disc ) {
124 if( gdrom_disc != NULL ) {
125 gdrom_disc->close(gdrom_disc);
126 }
127 gdrom_disc = disc;
128 gdrom_image_read_info( disc );
129 gdrom_fire_disc_changed( disc );
130 }
131 }
133 gboolean gdrom_mount_image( const gchar *filename )
134 {
135 gdrom_disc_t disc = gdrom_image_open(filename);
136 if( disc != NULL ) {
137 gdrom_mount_disc( disc );
138 return TRUE;
139 }
140 return FALSE;
141 }
143 void gdrom_unmount_disc( )
144 {
145 if( gdrom_disc != NULL ) {
146 gdrom_disc->close(gdrom_disc);
147 gdrom_fire_disc_changed(NULL);
148 gdrom_disc = NULL;
149 }
150 }
152 gdrom_disc_t gdrom_get_current_disc()
153 {
154 return gdrom_disc;
155 }
157 const gchar *gdrom_get_current_disc_name()
158 {
159 if( gdrom_disc == NULL ) {
160 return NULL;
161 } else {
162 return gdrom_disc->name;
163 }
164 }
166 const gchar *gdrom_get_current_disc_title()
167 {
168 if( gdrom_disc == NULL || gdrom_disc->title[0] == '\0' ) {
169 return NULL;
170 } else {
171 return gdrom_disc->title;
172 }
173 }
175 gchar *gdrom_get_relative_filename( const gchar *base_name, const gchar *rel_name )
176 {
177 gchar *dirname = g_path_get_dirname(base_name);
178 gchar *pathname = g_strdup_printf( "%s%c%s", dirname, G_DIR_SEPARATOR, rel_name );
179 g_free(dirname);
180 return pathname;
181 }
.