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#ifndef _ISOFS_H
#define _ISOFS_H
#pragma pack(push, 1)
/// Structure of a double-endian unsigned short word
typedef struct ISO_USHORT_PAIR
{
unsigned short lsb; /// LSB format 16-bit word
unsigned short msb; /// MSB format 16-bit word
} ISO_USHORT_PAIR;
/// Structure of a double-endian unsigned int word
typedef struct ISO_UINT_PAIR
{
unsigned int lsb; /// LSB format 32-bit word
unsigned int msb; /// MSB format 32-bit word
} ISO_UINT_PAIR;
/// ISO descriptor header structure
typedef struct ISO_DESCRIPTOR_HEADER
{
unsigned char type; /// Volume descriptor type (1 is descriptor, 255 is descriptor terminator)
char id[5]; /// Volume descriptor ID (always CD001)
unsigned short version; /// Volume descriptor version (always 0x01)
} ISO_DESCRIPTOR_HEADER;
/// Structure of a date stamp for ISO_DIR_ENTRY structure
typedef struct ISO_DATESTAMP
{
unsigned char year; /// number of years since 1900
unsigned char month; /// month, where 1=January, 2=February, etc.
unsigned char day; /// day of month, in the range from 1 to 31
unsigned char hour; /// hour, in the range from 0 to 23
unsigned char minute; /// minute, in the range from 0 to 59
unsigned char second; /// Second, in the range from 0 to 59
unsigned char GMToffs; /// Greenwich Mean Time offset
} ISO_DATESTAMP;
/// Structure of an ISO path table entry (specifically for the cd::IsoReader class)
typedef struct ISO_PATHTABLE_ENTRY
{
unsigned char nameLength; /// Name length (or 1 for the root directory)
unsigned char extLength; /// Number of sectors in extended attribute record
unsigned int dirOffs; /// Number of the first sector in the directory, as a double word
unsigned short dirLevel; /// Index of the directory record's parent directory
/// If nameLength is odd numbered, a padding byte will be present after the identifier text.
} ISO_PATHTABLE_ENTRY;
typedef struct ISO_DIR_ENTRY
{
unsigned char entryLength; // Directory entry length (variable, use for parsing through entries)
unsigned char extLength; // Extended entry data length (always 0)
ISO_UINT_PAIR entryOffs; // Points to the LBA of the file/directory entry
ISO_UINT_PAIR entrySize; // Size of the file/directory entry
ISO_DATESTAMP entryDate; // Date & time stamp of entry
unsigned char flags; // File flags (0x02 for directories, 0x00 for files)
unsigned char fileUnitSize; // Unit size (usually 0 even with Form 2 files such as STR/XA)
unsigned char interleaveGapSize; // Interleave gap size (usually 0 even with Form 2 files such as STR/XA)
ISO_USHORT_PAIR volSeqNum; // Volume sequence number (always 1)
unsigned char identifierLen; // Identifier (file/directory name) length in bytes
} ISO_DIR_ENTRY;
typedef struct ISO_ROOTDIR_HEADER
{
unsigned char entryLength; // Always 34 bytes
unsigned char extLength; // Always 0
ISO_UINT_PAIR entryOffs; // Should point to LBA 22
ISO_UINT_PAIR entrySize; // Size of entry extent
ISO_DATESTAMP entryDate; // Record date and time
unsigned char flags; // File flags
unsigned char fileUnitSize;
unsigned char interleaveGapSize;
ISO_USHORT_PAIR volSeqNum;
unsigned char identifierLen; // 0x01
unsigned char identifier; // 0x00
} ISO_ROOTDIR_HEADER;
// ISO descriptor structure
typedef struct ISO_DESCRIPTOR
{
// ISO descriptor header
ISO_DESCRIPTOR_HEADER header;
// System ID (always PLAYSTATION)
char systemID[32];
// Volume ID (or label, can be blank or anything)
char volumeID[32];
// Unused null bytes
unsigned char pad2[8];
// Size of volume in sector units
ISO_UINT_PAIR volumeSize;
// Unused null bytes
unsigned char pad3[32];
// Number of discs in this volume set (always 1 for single volume)
ISO_USHORT_PAIR volumeSetSize;
// Number of this disc in volume set (always 1 for single volume)
ISO_USHORT_PAIR volumeSeqNumber;
// Size of sector in bytes (always 2048 bytes)
ISO_USHORT_PAIR sectorSize;
// Path table size in bytes (applies to all the path tables)
ISO_UINT_PAIR pathTableSize;
// LBA to Type-L path table
unsigned int pathTable1Offs;
// LBA to optional Type-L path table (usually a copy of the primary path table)
unsigned int pathTable2Offs;
// LBA to Type-L path table but with MSB format values
unsigned int pathTable1MSBoffs;
// LBA to optional Type-L path table but with MSB format values (usually a copy of the main path table)
unsigned int pathTable2MSBoffs;
// Directory entry for the root directory (similar to a directory entry)
ISO_ROOTDIR_HEADER rootDirRecord;
// Volume set identifier (can be blank or anything)
char volumeSetIdentifier[128];
// Publisher identifier (can be blank or anything)
char publisherIdentifier[128];
// Data preparer identifier (can be blank or anything)
char dataPreparerIdentifier[128];
// Application identifier (always PLAYSTATION)
char applicationIdentifier[128];
// Copyright file in the file system identifier (can be blank or anything)
char copyrightFileIdentifier[37];
// Abstract file in the file system identifier (can be blank or anything)
char abstractFileIdentifier[37];
// Bibliographical file identifier in the file system (can be blank or anything)
char bibliographicFilelIdentifier[37];
// Volume create date (in text format YYYYMMDDHHMMSSMMGG)
char volumeCreateDate[17];
// Volume modify date (in text format YYYYMMDDHHMMSSMMGG)
char volumeModifyDate[17];
// Volume expiry date (in text format YYYYMMDDHHMMSSMMGG)
char volumeExpiryDate[17];
// Volume effective date (in text format YYYYMMDDHHMMSSMMGG)
char volumeEffeciveDate[17];
// File structure version (always 1)
unsigned char fileStructVersion;
// Padding
unsigned char dummy0;
// Application specific data (says CD-XA001 at [141], the rest are null bytes)
unsigned char appData[512];
// Padding
unsigned char pad4[653];
} ISO_DESCRIPTOR;
// Leave non-aligned structure packing
#pragma pack(pop)
#endif /* _ISOFS_H */
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