nkeynes@342 | 1 |
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nkeynes@138 | 2 | /**
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nkeynes@561 | 3 | * $Id$
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nkeynes@138 | 4 | *
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nkeynes@138 | 5 | * GD-Rom access functions.
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nkeynes@138 | 6 | *
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nkeynes@138 | 7 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@138 | 8 | *
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nkeynes@138 | 9 | * This program is free software; you can redistribute it and/or modify
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nkeynes@138 | 10 | * it under the terms of the GNU General Public License as published by
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nkeynes@138 | 11 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@138 | 12 | * (at your option) any later version.
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nkeynes@138 | 13 | *
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nkeynes@138 | 14 | * This program is distributed in the hope that it will be useful,
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nkeynes@138 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@138 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@138 | 17 | * GNU General Public License for more details.
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nkeynes@138 | 18 | */
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nkeynes@138 | 19 |
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nkeynes@138 | 20 | #include <stdio.h>
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nkeynes@237 | 21 | #include <fcntl.h>
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nkeynes@168 | 22 | #include <errno.h>
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nkeynes@678 | 23 | #include <glib/gutils.h>
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nkeynes@138 | 24 | #include "gdrom/ide.h"
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nkeynes@138 | 25 | #include "gdrom/gdrom.h"
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nkeynes@678 | 26 | #include "gdrom/gddriver.h"
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nkeynes@143 | 27 | #include "gdrom/packet.h"
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nkeynes@138 | 28 | #include "dream.h"
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nkeynes@138 | 29 |
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nkeynes@342 | 30 | extern gdrom_disc_t gdrom_disc;
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nkeynes@138 | 31 |
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nkeynes@678 | 32 | DEFINE_HOOK( gdrom_disc_change_hook, gdrom_disc_change_hook_t )
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nkeynes@678 | 33 |
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nkeynes@678 | 34 | gdrom_fire_disc_changed( gdrom_disc_t disc )
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nkeynes@678 | 35 | {
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nkeynes@678 | 36 | CALL_HOOKS( gdrom_disc_change_hook, disc, disc == NULL ? NULL : disc->name );
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nkeynes@678 | 37 | }
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nkeynes@678 | 38 |
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nkeynes@492 | 39 | gdrom_image_class_t gdrom_image_classes[] = { &cdrom_device_class,
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nkeynes@492 | 40 | &nrg_image_class,
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nkeynes@492 | 41 | &cdi_image_class,
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nkeynes@492 | 42 | &gdi_image_class,
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nkeynes@492 | 43 | NULL };
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nkeynes@138 | 44 |
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nkeynes@644 | 45 | char *gdrom_mode_names[] = { "Mode 0", "Mode 1", "Mode 2", "Mode 2 Form 1", "Mode 2 Form 2", "Audio",
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nkeynes@644 | 46 | "Mode 2 semiraw", "XA Raw", "Non-XA Raw" };
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nkeynes@644 | 47 | uint32_t gdrom_sector_size[] = { 0, 2048, 2336, 2048, 2324, 2352, 2336, 2352, 2352 };
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nkeynes@138 | 48 |
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nkeynes@138 | 49 | gdrom_disc_t gdrom_image_open( const gchar *filename )
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nkeynes@138 | 50 | {
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nkeynes@168 | 51 | const gchar *ext = strrchr(filename, '.');
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nkeynes@168 | 52 | gdrom_disc_t disc = NULL;
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nkeynes@237 | 53 |
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nkeynes@237 | 54 | int fd = open( filename, O_RDONLY | O_NONBLOCK );
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nkeynes@237 | 55 | FILE *f;
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nkeynes@422 | 56 | int i;
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nkeynes@168 | 57 | gdrom_image_class_t extclz = NULL;
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nkeynes@168 | 58 |
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nkeynes@237 | 59 | if( fd == -1 ) {
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nkeynes@168 | 60 | return NULL;
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nkeynes@168 | 61 | }
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nkeynes@168 | 62 |
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nkeynes@237 | 63 | f = fdopen(fd, "ro");
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nkeynes@237 | 64 |
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nkeynes@237 | 65 |
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nkeynes@168 | 66 | /* try extensions */
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nkeynes@168 | 67 | if( ext != NULL ) {
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nkeynes@168 | 68 | ext++; /* Skip the '.' */
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nkeynes@168 | 69 | for( i=0; gdrom_image_classes[i] != NULL; i++ ) {
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nkeynes@237 | 70 | if( gdrom_image_classes[i]->extension != NULL &&
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nkeynes@237 | 71 | strcasecmp( gdrom_image_classes[i]->extension, ext ) == 0 ) {
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nkeynes@168 | 72 | extclz = gdrom_image_classes[i];
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nkeynes@168 | 73 | if( extclz->is_valid_file(f) ) {
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nkeynes@168 | 74 | disc = extclz->open_image_file(filename, f);
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nkeynes@168 | 75 | if( disc != NULL )
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nkeynes@168 | 76 | return disc;
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nkeynes@168 | 77 | }
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nkeynes@168 | 78 | break;
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nkeynes@168 | 79 | }
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nkeynes@168 | 80 | }
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nkeynes@168 | 81 | }
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nkeynes@168 | 82 |
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nkeynes@168 | 83 | /* Okay, fall back to magic */
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nkeynes@237 | 84 | gboolean recognized = FALSE;
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nkeynes@168 | 85 | for( i=0; gdrom_image_classes[i] != NULL; i++ ) {
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nkeynes@168 | 86 | if( gdrom_image_classes[i] != extclz &&
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nkeynes@168 | 87 | gdrom_image_classes[i]->is_valid_file(f) ) {
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nkeynes@237 | 88 | recognized = TRUE;
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nkeynes@168 | 89 | disc = gdrom_image_classes[i]->open_image_file(filename, f);
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nkeynes@168 | 90 | if( disc != NULL )
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nkeynes@168 | 91 | return disc;
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nkeynes@168 | 92 | }
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nkeynes@168 | 93 | }
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nkeynes@168 | 94 |
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nkeynes@168 | 95 | fclose(f);
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nkeynes@168 | 96 | return NULL;
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nkeynes@138 | 97 | }
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nkeynes@138 | 98 |
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nkeynes@138 | 99 | void gdrom_mount_disc( gdrom_disc_t disc )
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nkeynes@138 | 100 | {
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nkeynes@678 | 101 | if( disc != gdrom_disc ) {
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nkeynes@678 | 102 | gdrom_unmount_disc();
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nkeynes@678 | 103 | gdrom_disc = disc;
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nkeynes@678 | 104 | gdrom_image_dump_info( disc );
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nkeynes@678 | 105 | gdrom_fire_disc_changed( disc );
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nkeynes@678 | 106 | }
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nkeynes@138 | 107 | }
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nkeynes@138 | 108 |
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nkeynes@433 | 109 | gboolean gdrom_mount_image( const gchar *filename )
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nkeynes@138 | 110 | {
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nkeynes@138 | 111 | gdrom_disc_t disc = gdrom_image_open(filename);
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nkeynes@433 | 112 | if( disc != NULL ) {
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nkeynes@678 | 113 | gdrom_mount_disc( disc );
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nkeynes@678 | 114 | return TRUE;
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nkeynes@433 | 115 | }
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nkeynes@433 | 116 | return FALSE;
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nkeynes@138 | 117 | }
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nkeynes@138 | 118 |
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nkeynes@138 | 119 | void gdrom_unmount_disc( )
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nkeynes@138 | 120 | {
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nkeynes@138 | 121 | if( gdrom_disc != NULL ) {
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nkeynes@678 | 122 | gdrom_disc->close(gdrom_disc);
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nkeynes@678 | 123 | gdrom_fire_disc_changed(NULL);
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nkeynes@138 | 124 | }
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nkeynes@138 | 125 | gdrom_disc = NULL;
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nkeynes@342 | 126 |
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nkeynes@138 | 127 | }
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nkeynes@138 | 128 |
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nkeynes@464 | 129 | gdrom_disc_t gdrom_get_current_disc()
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nkeynes@464 | 130 | {
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nkeynes@464 | 131 | return gdrom_disc;
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nkeynes@464 | 132 | }
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nkeynes@613 | 133 |
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nkeynes@678 | 134 | const gchar *gdrom_get_current_disc_name()
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nkeynes@678 | 135 | {
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nkeynes@678 | 136 | if( gdrom_disc == NULL ) {
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nkeynes@678 | 137 | return NULL;
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nkeynes@678 | 138 | } else {
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nkeynes@678 | 139 | return gdrom_disc->name;
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nkeynes@678 | 140 | }
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nkeynes@678 | 141 | }
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nkeynes@678 | 142 |
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nkeynes@613 | 143 | gchar *gdrom_get_relative_filename( const gchar *base_name, const gchar *rel_name )
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nkeynes@613 | 144 | {
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nkeynes@613 | 145 | gchar *dirname = g_path_get_dirname(base_name);
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nkeynes@613 | 146 | gchar *pathname = g_strdup_printf( "%s%c%s", dirname, G_DIR_SEPARATOR, rel_name );
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nkeynes@613 | 147 | g_free(dirname);
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nkeynes@613 | 148 | return pathname;
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nkeynes@613 | 149 | }
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