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/*
$Id: vcd_read.c,v 1.4 2005/01/01 02:43:59 rockyb Exp $
Copyright (C) 2001,2003 Herbert Valerio Riedel <hvr@gnu.org>
Copyright (C) 2003 Rocky Bernstein <rocky@gnu.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "vcd_read.h"
#include "vcd_assert.h"
#include <libvcd/inf.h>
#include <libvcd/files.h>
#include <libvcd/logging.h>
#ifdef HAVE_STRING_H
#include <string.h>
#endif
bool
read_pvd(CdIo *cdio, iso9660_pvd_t *pvd)
{
if (cdio_read_mode2_sector (cdio, pvd, ISO_PVD_SECTOR, false)) {
vcd_error ("error reading PVD sector (%d)", ISO_PVD_SECTOR);
return false;
}
if (pvd->type != ISO_VD_PRIMARY) {
vcd_error ("unexpected PVD type %d", pvd->type);
return false;
}
if (strncmp (pvd->id, ISO_STANDARD_ID, strlen (ISO_STANDARD_ID)))
{
vcd_error ("unexpected ID encountered (expected `"
ISO_STANDARD_ID "', got `%.5s'", pvd->id);
return false;
}
return true;
}
bool
read_entries(CdIo *cdio, EntriesVcd_t *entries)
{
if (cdio_read_mode2_sector (cdio, entries, ENTRIES_VCD_SECTOR, false)) {
vcd_error ("error reading Entries sector (%d)", ENTRIES_VCD_SECTOR);
return false;
}
/* analyze signature/type */
if (!strncmp (entries->ID, ENTRIES_ID_VCD, sizeof (entries->ID)))
return true;
else if (!strncmp (entries->ID, "ENTRYSVD", sizeof (entries->ID))) {
vcd_warn ("found (non-compliant) SVCD ENTRIES.SVD signature");
return true;
} else {
vcd_error ("unexpected ID signature encountered `%.8s'", entries->ID);
return false;
}
}
bool
read_info(CdIo *cdio, InfoVcd_t *info, vcd_type_t *vcd_type)
{
if (cdio_read_mode2_sector (cdio, info, INFO_VCD_SECTOR, false)) {
vcd_error ("error reading Info sector (%d)", INFO_VCD_SECTOR);
return false;
}
*vcd_type = vcd_files_info_detect_type (info);
/* analyze signature/type */
switch (*vcd_type)
{
case VCD_TYPE_VCD:
case VCD_TYPE_VCD11:
case VCD_TYPE_VCD2:
case VCD_TYPE_SVCD:
case VCD_TYPE_HQVCD:
vcd_debug ("%s detected", vcdinf_get_format_version_str(*vcd_type));
break;
case VCD_TYPE_INVALID:
vcd_error ("unknown ID encountered -- maybe not a proper (S)VCD?");
return false;
break;
default:
vcd_assert_not_reached ();
break;
}
return true;
}
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