nkeynes@492 | 1 | /**
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nkeynes@561 | 2 | * $Id$
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nkeynes@492 | 3 | *
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nkeynes@492 | 4 | * NullDC GDI image format
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nkeynes@492 | 5 | *
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nkeynes@492 | 6 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@492 | 7 | *
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nkeynes@492 | 8 | * This program is free software; you can redistribute it and/or modify
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nkeynes@492 | 9 | * it under the terms of the GNU General Public License as published by
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nkeynes@492 | 10 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@492 | 11 | * (at your option) any later version.
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nkeynes@492 | 12 | *
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nkeynes@492 | 13 | * This program is distributed in the hope that it will be useful,
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nkeynes@492 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@492 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@492 | 16 | * GNU General Public License for more details.
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nkeynes@492 | 17 | */
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nkeynes@492 | 18 |
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nkeynes@492 | 19 | #include <stdlib.h>
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nkeynes@492 | 20 | #include <stdio.h>
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nkeynes@492 | 21 | #include <stdint.h>
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nkeynes@759 | 22 | #include <string.h>
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nkeynes@492 | 23 | #include <fcntl.h>
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nkeynes@492 | 24 | #include <errno.h>
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nkeynes@492 | 25 | #include <sys/stat.h>
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nkeynes@1296 | 26 | #include <glib.h>
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nkeynes@1097 | 27 | #include "drivers/cdrom/cdimpl.h"
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nkeynes@492 | 28 |
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nkeynes@492 | 29 |
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nkeynes@492 | 30 | static gboolean gdi_image_is_valid( FILE *f );
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nkeynes@1097 | 31 | static gboolean gdi_image_read_toc( cdrom_disc_t disc, ERROR *err );
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nkeynes@492 | 32 |
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nkeynes@1097 | 33 | struct cdrom_disc_factory gdi_disc_factory = { "NullDC GD-Rom Image", "gdi",
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nkeynes@1097 | 34 | gdi_image_is_valid, NULL, gdi_image_read_toc };
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nkeynes@492 | 35 |
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nkeynes@492 | 36 | static gboolean gdi_image_is_valid( FILE *f )
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nkeynes@492 | 37 | {
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nkeynes@492 | 38 | char line[512];
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nkeynes@492 | 39 | uint32_t track_count;
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nkeynes@736 | 40 |
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nkeynes@492 | 41 | fseek(f, 0, SEEK_SET);
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nkeynes@492 | 42 | if( fgets( line, sizeof(line), f ) == NULL ) {
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nkeynes@736 | 43 | return FALSE;
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nkeynes@492 | 44 | }
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nkeynes@492 | 45 | track_count = strtoul(line, NULL, 0);
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nkeynes@492 | 46 | if( track_count == 0 || track_count > 99 ) {
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nkeynes@736 | 47 | return FALSE;
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nkeynes@492 | 48 | }
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nkeynes@492 | 49 | return TRUE;
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nkeynes@492 | 50 | }
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nkeynes@492 | 51 |
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nkeynes@1097 | 52 | static gboolean gdi_image_read_toc( cdrom_disc_t disc, ERROR *err )
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nkeynes@492 | 53 | {
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nkeynes@492 | 54 | int i;
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nkeynes@492 | 55 | uint32_t track_count;
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nkeynes@492 | 56 | char line[512];
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nkeynes@1097 | 57 | int session = 1;
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nkeynes@492 | 58 | gchar *dirname;
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nkeynes@492 | 59 |
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nkeynes@1097 | 60 | FILE *f = cdrom_disc_get_base_file(disc);
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nkeynes@1097 | 61 |
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nkeynes@492 | 62 | fseek(f, 0, SEEK_SET);
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nkeynes@736 | 63 |
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nkeynes@492 | 64 | if( fgets( line, sizeof(line), f ) == NULL ) {
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nkeynes@1109 | 65 | SET_ERROR( err, LX_ERR_FILE_INVALID, "Invalid GDI image" );
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nkeynes@736 | 66 | return FALSE;
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nkeynes@492 | 67 | }
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nkeynes@492 | 68 | track_count = strtoul(line, NULL, 0);
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nkeynes@492 | 69 | if( track_count == 0 || track_count > 99 ) {
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nkeynes@1109 | 70 | SET_ERROR( err, LX_ERR_FILE_INVALID, "Invalid GDI image" );
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nkeynes@1097 | 71 | return FALSE;
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nkeynes@492 | 72 | }
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nkeynes@492 | 73 |
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nkeynes@1097 | 74 | dirname = g_path_get_dirname(disc->name);
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nkeynes@1097 | 75 | disc->disc_type = CDROM_DISC_GDROM;
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nkeynes@1023 | 76 | disc->track_count = track_count;
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nkeynes@1097 | 77 | disc->session_count = 2;
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nkeynes@492 | 78 | for( i=0; i<track_count; i++ ) {
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nkeynes@736 | 79 | int track_no, start_lba, flags, size, offset;
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nkeynes@736 | 80 | char filename[256];
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nkeynes@492 | 81 |
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nkeynes@736 | 82 | if( fgets( line, sizeof(line), f ) == NULL ) {
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nkeynes@1097 | 83 | cdrom_disc_unref(disc);
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nkeynes@1109 | 84 | SET_ERROR( err, LX_ERR_FILE_INVALID, "Invalid GDI image - unexpected end of file" );
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nkeynes@1097 | 85 | return FALSE;
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nkeynes@736 | 86 | }
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nkeynes@736 | 87 | sscanf( line, "%d %d %d %d %s %d", &track_no, &start_lba, &flags, &size,
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nkeynes@736 | 88 | filename, &offset );
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nkeynes@736 | 89 | if( start_lba >= 45000 ) {
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nkeynes@1097 | 90 | session = 2;
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nkeynes@736 | 91 | }
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nkeynes@1097 | 92 | disc->track[i].sessionno = session;
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nkeynes@1097 | 93 | disc->track[i].lba = start_lba;
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nkeynes@1023 | 94 | disc->track[i].flags = (flags & 0x0F)<<4;
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nkeynes@1097 | 95 |
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nkeynes@1097 | 96 | sector_mode_t mode;
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nkeynes@1097 | 97 | if( disc->track[i].flags & TRACK_FLAG_DATA ) {
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nkeynes@1097 | 98 | /* Data track */
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nkeynes@1097 | 99 | switch(size) {
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nkeynes@1097 | 100 | case 0: mode = SECTOR_MODE2_FORM1; break; /* Default */
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nkeynes@1097 | 101 | case 2048: mode = SECTOR_MODE2_FORM1; break;
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nkeynes@1097 | 102 | case 2324: mode = SECTOR_MODE2_FORM2; break;
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nkeynes@1097 | 103 | case 2336: mode = SECTOR_SEMIRAW_MODE2; break;
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nkeynes@1097 | 104 | case 2352: mode = SECTOR_RAW_XA; break;
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nkeynes@1097 | 105 | default:
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nkeynes@1109 | 106 | SET_ERROR( err, LX_ERR_FILE_INVALID, "Invalid sector size '%d' in GDI track %d", size, (i+1) );
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nkeynes@1097 | 107 | g_free(dirname);
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nkeynes@1097 | 108 | return FALSE;
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nkeynes@1097 | 109 | }
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nkeynes@1097 | 110 | } else {
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nkeynes@1097 | 111 | /* Audio track */
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nkeynes@1097 | 112 | mode = SECTOR_CDDA;
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nkeynes@1097 | 113 | if( size == 0 )
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nkeynes@1097 | 114 | size = 2352;
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nkeynes@1097 | 115 | else if( size != 2352 ) {
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nkeynes@1109 | 116 | SET_ERROR( err, LX_ERR_FILE_INVALID, "Invalid sector size '%d' for audio track %d", size, (i+1) );
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nkeynes@1097 | 117 | g_free(dirname);
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nkeynes@1097 | 118 | return FALSE;
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nkeynes@1097 | 119 | }
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nkeynes@1097 | 120 | }
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nkeynes@736 | 121 | if( strcasecmp( filename, "none" ) == 0 ) {
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nkeynes@1097 | 122 | disc->track[i].source = null_sector_source_new( mode, 0 );
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nkeynes@736 | 123 | } else {
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nkeynes@736 | 124 | gchar *pathname = g_strdup_printf( "%s%c%s", dirname, G_DIR_SEPARATOR, filename );
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nkeynes@1097 | 125 | disc->track[i].source = file_sector_source_new_filename( pathname, mode,
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nkeynes@1097 | 126 | offset, FILE_SECTOR_FULL_FILE );
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nkeynes@736 | 127 | g_free(pathname);
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nkeynes@1097 | 128 | if( disc->track[i].source == NULL ) {
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nkeynes@1109 | 129 | /* Note: status is invalid because it's a failure of the GDI file */
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nkeynes@1109 | 130 | SET_ERROR( err, LX_ERR_FILE_INVALID, "GDI track file '%s' could not be opened (%s)", filename, strerror(errno) );
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nkeynes@736 | 131 | g_free(dirname);
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nkeynes@1097 | 132 | return FALSE;
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nkeynes@736 | 133 | }
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nkeynes@736 | 134 | }
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nkeynes@492 | 135 | }
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nkeynes@492 | 136 | g_free(dirname);
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nkeynes@1097 | 137 | return TRUE;
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nkeynes@492 | 138 | }
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