1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/drivers/cdrom/cd_gdi.c	Wed Feb 10 18:16:19 2010 +1000
     1.3 @@ -0,0 +1,139 @@
     1.4 +/**
     1.5 + * $Id$
     1.6 + *
     1.7 + * NullDC GDI image format
     1.8 + *
     1.9 + * Copyright (c) 2005 Nathan Keynes.
    1.10 + *
    1.11 + * This program is free software; you can redistribute it and/or modify
    1.12 + * it under the terms of the GNU General Public License as published by
    1.13 + * the Free Software Foundation; either version 2 of the License, or
    1.14 + * (at your option) any later version.
    1.15 + *
    1.16 + * This program is distributed in the hope that it will be useful,
    1.17 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.18 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.19 + * GNU General Public License for more details.
    1.20 + */
    1.21 +
    1.22 +#include <stdlib.h>
    1.23 +#include <stdio.h>
    1.24 +#include <stdint.h>
    1.25 +#include <string.h>
    1.26 +#include <fcntl.h>
    1.27 +#include <errno.h>
    1.28 +#include <sys/stat.h>
    1.29 +#include <glib/gutils.h>
    1.30 +#include <glib/gstrfuncs.h>
    1.31 +#include "drivers/cdrom/cdimpl.h"
    1.32 +
    1.33 +
    1.34 +static gboolean gdi_image_is_valid( FILE *f );
    1.35 +static gboolean gdi_image_read_toc( cdrom_disc_t disc, ERROR *err );
    1.36 +
    1.37 +struct cdrom_disc_factory gdi_disc_factory = { "NullDC GD-Rom Image", "gdi",
    1.38 +        gdi_image_is_valid, NULL, gdi_image_read_toc };
    1.39 +
    1.40 +static gboolean gdi_image_is_valid( FILE *f )
    1.41 +{
    1.42 +    char line[512];
    1.43 +    uint32_t track_count;
    1.44 +
    1.45 +    fseek(f, 0, SEEK_SET);
    1.46 +    if( fgets( line, sizeof(line), f ) == NULL ) {
    1.47 +        return FALSE;
    1.48 +    }
    1.49 +    track_count = strtoul(line, NULL, 0);
    1.50 +    if( track_count == 0 || track_count > 99 ) {
    1.51 +        return FALSE;
    1.52 +    }
    1.53 +    return TRUE;
    1.54 +}
    1.55 +
    1.56 +static gboolean gdi_image_read_toc( cdrom_disc_t disc, ERROR *err )
    1.57 +{
    1.58 +    int i;
    1.59 +    uint32_t track_count;
    1.60 +    struct stat st;
    1.61 +    char line[512];
    1.62 +    int session = 1;
    1.63 +    gchar *dirname;
    1.64 +
    1.65 +    FILE *f = cdrom_disc_get_base_file(disc);
    1.66 +
    1.67 +    fseek(f, 0, SEEK_SET);
    1.68 +
    1.69 +    if( fgets( line, sizeof(line), f ) == NULL ) {
    1.70 +        SET_ERROR( err, EINVAL, "Invalid GDI image" );
    1.71 +        return FALSE;
    1.72 +    }
    1.73 +    track_count = strtoul(line, NULL, 0);
    1.74 +    if( track_count == 0 || track_count > 99 ) {
    1.75 +        SET_ERROR( err, EINVAL, "Invalid GDI image" );
    1.76 +        return FALSE;
    1.77 +    }
    1.78 +
    1.79 +    dirname = g_path_get_dirname(disc->name);
    1.80 +    disc->disc_type = CDROM_DISC_GDROM;
    1.81 +    disc->track_count = track_count;
    1.82 +    disc->session_count = 2;
    1.83 +    for( i=0; i<track_count; i++ ) {
    1.84 +        int track_no, start_lba, flags, size, offset;
    1.85 +        char filename[256];
    1.86 +
    1.87 +        if( fgets( line, sizeof(line), f ) == NULL ) {
    1.88 +            cdrom_disc_unref(disc);
    1.89 +            SET_ERROR( err, EINVAL, "Invalid GDI image - unexpected end of file" );
    1.90 +            return FALSE;
    1.91 +        }
    1.92 +        sscanf( line, "%d %d %d %d %s %d", &track_no, &start_lba, &flags, &size,
    1.93 +                filename, &offset );
    1.94 +        if( start_lba >= 45000 ) {
    1.95 +            session = 2;
    1.96 +        }
    1.97 +        disc->track[i].sessionno = session;
    1.98 +        disc->track[i].lba = start_lba;
    1.99 +        disc->track[i].flags = (flags & 0x0F)<<4;
   1.100 +
   1.101 +        sector_mode_t mode;
   1.102 +        if( disc->track[i].flags & TRACK_FLAG_DATA ) {
   1.103 +            /* Data track */
   1.104 +            switch(size) {
   1.105 +            case 0:    mode = SECTOR_MODE2_FORM1; break; /* Default */
   1.106 +            case 2048: mode = SECTOR_MODE2_FORM1; break;
   1.107 +            case 2324: mode = SECTOR_MODE2_FORM2; break;
   1.108 +            case 2336: mode = SECTOR_SEMIRAW_MODE2; break;
   1.109 +            case 2352: mode = SECTOR_RAW_XA; break;
   1.110 +            default:
   1.111 +                SET_ERROR( err, EINVAL, "Invalid sector size '%d' in GDI track %d", size, (i+1) );
   1.112 +                g_free(dirname);
   1.113 +                return FALSE;
   1.114 +            }
   1.115 +        } else {
   1.116 +            /* Audio track */
   1.117 +            mode = SECTOR_CDDA;
   1.118 +            if( size == 0 )
   1.119 +                size = 2352;
   1.120 +            else if( size != 2352 ) {
   1.121 +                SET_ERROR( err, EINVAL, "Invalid sector size '%d' for audio track %d", size, (i+1) );
   1.122 +                g_free(dirname);
   1.123 +                return FALSE;
   1.124 +            }
   1.125 +        }
   1.126 +        if( strcasecmp( filename, "none" ) == 0 ) {
   1.127 +            disc->track[i].source = null_sector_source_new( mode, 0 );
   1.128 +        } else {
   1.129 +            gchar *pathname = g_strdup_printf( "%s%c%s", dirname, G_DIR_SEPARATOR, filename );
   1.130 +            disc->track[i].source = file_sector_source_new_filename( pathname, mode,
   1.131 +                    offset, FILE_SECTOR_FULL_FILE );
   1.132 +            g_free(pathname);
   1.133 +            if( disc->track[i].source == NULL ) {
   1.134 +                SET_ERROR( err, ENOENT, "GDI track file '%s' could not be opened (%s)", filename, strerror(errno) );
   1.135 +                g_free(dirname);
   1.136 +                return FALSE;
   1.137 +            }
   1.138 +        }
   1.139 +    }
   1.140 +    g_free(dirname);
   1.141 +    return TRUE;
   1.142 +}