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mechanism for the host software to retrieve from the drive the most recent power calibration settings used by the drive to record data on the current disc, and to restore and use such information at some future time. The Power Calibration Table described <strong>here</strong>in would be used to store on the disc the power calibration information thus obtained for future use by compatible implementations. The table consists of a header followed by a list of records containing power calibration settings which have been used by various drives and/or hosts, under various conditions, to record data on this disc, as well as other relevant information which may be used to determine which of the recorded calibration settings may be appropriate for use in a future situation. While every effort has been made to anticipate and include all necessary information to make effective use of the recorded power calibration information possible, it is up to the individual implementation to determine if, when and how such information will actually be used. The Power Calibration Table may be recorded as a system stream of the File Set Descriptor according to the rules of 3.3.53.3.5. The name of the stream shall be as follows: “*UDF Power Cal Table” Implementations that do not support the Power Calibration Table shall not delete this stream. Further, any implementation which supports and/or uses the Power Calibration Table shall not delete or modify any records from such table which the implementation, through its use t<strong>here</strong>of, did not clearly and specifically obsolete or update. UDF 2.01 93 March50 April
The stream shall be formatted as follows: 3.3.7.3.1 Power Calibration Table Stream RBP Length Name Contents 0 32 Implementation Identifier EntityID [ UDF 2.1.5] 32 4 Number of Records Uint32 [1/7.1.5] 36 * Power Calibration Table Records bytes Implementation Identifier: See UDF section 2.1.5. Number of Records: Shall specify the number of records contained in the power calibration table Power Calibration Table Records: A series of power calibration table records for drives which have written to this disc. The length of this table is variable, but shall be a multiple of four bytes. Recording of data in any unstructured field shall be left justified and padded on the right with #20 bytes. Power Calibration Table Record Layout RBP Length Name Contents 0 2 Record Length Uint16 [1/7.1.3] 2 2 Drive Unique Area Length [DUA_L] Uint16 [1/7.1.3] 4 32 Vendor ID bytes 36 16 Product ID bytes 52 4 Firmware Revision Level bytes 56 16 Serial Number/Device Unique ID bytes 72 8 Host ID bytes 80 12 Originating Time Stamp Timestamp [1/7.3] 92 12 Updated Time Stamp Timestamp [1/7.3] 104 2 Speed Uint16 [1/7.1.3] 106 6 Power Calibration Values bytes 112 [DUA_L] Drive Unique Area bytes Record Length – The length of this Power Calibration Table Record in bytes, including the optional variable length Drive Unique Area. Shall be a multiple of four bytes. Drive Unique Area Length – The length of the optional Drive Unique Area recorded at the end of this record in bytes. Shall be a multiple of four bytes. UDF 2.01 94 March50 April
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Universal Disk Format ® Specificat
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REVISION HISTORY 1.00 October 24, 1
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CONTENTS 1. INTRODUCTION ..........
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6.4 OSTA Compressed Unicode Algorit
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1. Introduction The OSTA Universal
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1.2 Compliance This document requir
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Media Block Address NOTE 1: This is
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1.3.3 Terms May Optional Shall Shou
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non-overlapping Partitions with 2 p
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2.1 Part 1 - General 2.1.1 Characte
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length of the field. The characters
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2.1.5.2 char Identifier[23] Unless
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The Suffix Type column in the above
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For an Application Entity Identifie
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2.2 Part 3 - Volume Structure 2.2.1
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NOTE: This field is used to determi
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2.2.4 Logical Volume Descriptor str
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2.2.5 Unallocated Space Descriptor
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EntityID. The scope of this EntityI
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2.2.7.2.2 dstring LogicalVolumeIden
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Layout of Type 2 partition map for
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• Bits 1-7: Reserved. Shall be se
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Virtual Allocation Table structure
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the offset and length of a partitio
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The Metadata Partition Map (see2.2.
Page 52 and 53: 2.2.13.1 Metadata File (and Metadat
Page 54 and 55: 2.2.13.4 Procedure for de-allocatin
Page 56 and 57: } struct EntityID byte byte Impleme
Page 58 and 59: 2.3.2 File Set Descriptor struct Fi
Page 60 and 61: 2.3.2.7 struct EntityID DomainIdent
Page 62 and 63: In order to assist a UDF implementa
Page 64 and 65: 2.3.5.1 Uint16 StrategyType The co
Page 66 and 67: 2.3.6 File Entry struct FileEntry {
Page 68 and 69: 2.3.6.8 FileLinkCount Hard links to
Page 70 and 71: Descriptors should be used. For exa
Page 72 and 73: 2.3.11.2 Uint32 PreviousAllocationE
Page 74 and 75: 3.2 Part 3 - Volume Structure 3.2.1
Page 76 and 77: 3.3 Part 4 - File System 3.3.1 File
Page 78 and 79: 3.3.2.1.2 Macintosh Bits 6 & 7 (Set
Page 80 and 81: 3.3.3 File Entry struct FileEntry {
Page 82 and 83: would be considered writable if the
Page 84 and 85: 3.3.3.5 byte Extended Attributes Se
Page 86 and 87: ignored and the file creation time
Page 88 and 89: 3.3.4.5.1.1 FreeEASpace This extend
Page 90 and 91: MacVolumeInfo format RBP Length Nam
Page 92 and 93: UDFFXInfo format (Volume IV, page 1
Page 94 and 95: The ApplicationUse area for this ex
Page 96 and 97: stream directory. If present, there
Page 98 and 99: Since the streams listed above have
Page 100 and 101: Object Logical Block Number is the
Page 104 and 105: Vendor ID - The Vendor ID reported
Page 106 and 107: The OS2EA Stream contains a table o
Page 108 and 109: 4.2.2 File Identifier Descriptor st
Page 110 and 111: Definitions: A FileIdentifier shall
Page 112 and 113: 3. Invalid Characters: A FileIdenti
Page 114 and 115: 4. Trailing Periods and Spaces: All
Page 116 and 117: If there is a file extension then t
Page 118 and 119: defined as space that is not direct
Page 120 and 121: UDF 2.01 111 March50 April
Page 122 and 123: 6.2 UDF Entity Identifier Values En
Page 124 and 125: 8 0 BeOS - generic 9 0 Windows CE -
Page 126 and 127: } } returnValue = unicodeIndex; } r
Page 128 and 129: } return crc; #ifdef MAIN unsigned
Page 130 and 131: 6.6 Algorithm for Strategy Type 409
Page 132 and 133: nameLen = udfNameLen; } else { /* A
Page 134 and 135: } needsCRC = TRUE; /* Append the CR
Page 136 and 137: if (index < udfLabelLen || index ==
Page 138 and 139: UDF 2.01 129 March50 April
Page 140 and 141: unicode_t *udfName, /* (Input) Name
Page 142 and 143: } #ifdef (OS2 | WIN_95 | WIN_NT) /*
Page 144 and 145: 6.8 Extended Attribute Checksum Alg
Page 146 and 147: • The data of each file shall be
Page 148 and 149: Read the File Identifier Descriptor
Page 150 and 151: • An intermediate state is allowe
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• The host shall perform read/mod
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6.10.2.6.3 Level 3 No restrictions
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ISO 9660 converted to UDF 1 st sess
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For File Structure: 5. Unallocated
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6.13 Recommendations for DVD+R and
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6.13.1.4.2 Anchor Volume Descriptor
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6.13.2.1 Requirements • The packe
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6.126.15 UDF Media Format Revision
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Description DCN Updated in UDF Revi
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Registration Form Disk Format Speci
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L Logical Block Size, 8, 9, 2425 Lo
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