lxdream 0.9.1| filename | src/gdrom/gdi.c |
| changeset | 736:a02d1475ccfd |
| prev | 678:35eb00945316 |
| next | 759:f16975739abc |
| author | nkeynes |
| date | Mon Jul 14 07:44:42 2008 +0000 (15 years ago) |
| permissions | -rw-r--r-- |
| last change | Re-indent everything consistently Fix include guards for consistency as well |
| view | annotate | diff | log | raw |
1 /**
2 * $Id$
3 *
4 * NullDC GDI image format
5 *
6 * Copyright (c) 2005 Nathan Keynes.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
19 #include <stdlib.h>
20 #include <stdio.h>
21 #include <stdint.h>
22 #include <fcntl.h>
23 #include <errno.h>
24 #include <sys/stat.h>
25 #include <glib/gutils.h>
26 #include "gdrom/gddriver.h"
29 static gboolean gdi_image_is_valid( FILE *f );
30 static gdrom_disc_t gdi_image_open( const gchar *filename, FILE *f );
32 struct gdrom_image_class gdi_image_class = { "NullDC GD-Rom Image", "gdi",
33 gdi_image_is_valid, gdi_image_open };
35 static gboolean gdi_image_is_valid( FILE *f )
36 {
37 char line[512];
38 uint32_t track_count;
40 fseek(f, 0, SEEK_SET);
41 if( fgets( line, sizeof(line), f ) == NULL ) {
42 return FALSE;
43 }
44 track_count = strtoul(line, NULL, 0);
45 if( track_count == 0 || track_count > 99 ) {
46 return FALSE;
47 }
48 return TRUE;
49 }
51 static gdrom_disc_t gdi_image_open( const gchar *filename, FILE *f )
52 {
53 int i;
54 uint32_t track_count;
55 gdrom_disc_t disc;
56 gdrom_image_t image;
57 struct stat st;
58 char line[512];
59 gchar *dirname;
61 fseek(f, 0, SEEK_SET);
63 if( fgets( line, sizeof(line), f ) == NULL ) {
64 return FALSE;
65 }
66 track_count = strtoul(line, NULL, 0);
67 if( track_count == 0 || track_count > 99 ) {
68 return NULL;
69 }
71 disc = gdrom_image_new(filename, f);
72 if( disc == NULL ) {
73 ERROR("Unable to allocate memory!");
74 return NULL;
75 }
76 dirname = g_path_get_dirname(filename);
77 image = (gdrom_image_t)disc;
78 image->disc_type = IDE_DISC_GDROM;
79 image->track_count = track_count;
80 for( i=0; i<track_count; i++ ) {
81 int track_no, start_lba, flags, size, offset;
82 char filename[256];
84 if( fgets( line, sizeof(line), f ) == NULL ) {
85 gdrom_image_destroy_no_close(disc);
86 return NULL;
87 }
88 sscanf( line, "%d %d %d %d %s %d", &track_no, &start_lba, &flags, &size,
89 filename, &offset );
90 if( start_lba >= 45000 ) {
91 image->track[i].session = 1;
92 } else {
93 image->track[i].session = 0;
94 }
95 image->track[i].lba = start_lba + 150; // 2-second offset
96 image->track[i].flags = (flags & 0x0F)<<4;
97 image->track[i].sector_size = size;
98 if( strcasecmp( filename, "none" ) == 0 ) {
99 image->track[i].file = NULL;
100 image->track[i].sector_count = 0;
101 image->track[i].mode = GDROM_MODE1;
102 } else {
103 gchar *pathname = g_strdup_printf( "%s%c%s", dirname, G_DIR_SEPARATOR, filename );
104 image->track[i].file = fopen( pathname, "ro" );
105 g_free(pathname);
106 if( image->track[i].file == NULL ) {
107 gdrom_image_destroy_no_close(disc);
108 g_free(dirname);
109 return NULL;
110 }
111 fstat( fileno(image->track[i].file), &st );
112 image->track[i].sector_count = st.st_size / size;
113 if( image->track[i].flags & TRACK_DATA ) {
114 /* Data track */
115 switch(size) {
116 case 2048: image->track[i].mode = GDROM_MODE1; break;
117 case 2336: image->track[i].mode = GDROM_SEMIRAW_MODE2; break;
118 case 2352: image->track[i].mode = GDROM_RAW_XA; break;
119 default:
120 gdrom_image_destroy_no_close(disc);
121 g_free(dirname);
122 return NULL;
123 }
124 } else {
125 /* Audio track */
126 image->track[i].mode = GDROM_CDDA;
127 if( size != 2352 ) {
128 gdrom_image_destroy_no_close(disc);
129 g_free(dirname);
130 return NULL;
131 }
132 }
133 }
134 image->track[i].offset = offset;
135 }
136 g_free(dirname);
137 return disc;
138 }
.