public byte[] GetBytes(int bytesPerIndexRecord, bool applyUsaProtection)
{
int strideCount = bytesPerIndexRecord / MultiSectorHelper.BytesPerStride;
ushort updateSequenceArraySize = (ushort)(1 + strideCount);
MultiSectorHeader multiSectorHeader = new MultiSectorHeader(ValidSignature, UpdateSequenceArrayOffset, updateSequenceArraySize);
int updateSequenceArrayPaddedLength = (int)Math.Ceiling((double)(updateSequenceArraySize * 2) / 8) * 8;
m_indexHeader.EntriesOffset = (uint)(IndexHeader.Length + updateSequenceArrayPaddedLength);
m_indexHeader.TotalLength = (uint)(IndexHeader.Length + updateSequenceArrayPaddedLength + IndexEntry.GetLength(IndexEntries));
m_indexHeader.AllocatedLength = (uint)(bytesPerIndexRecord - IndexHeaderOffset);
int length = applyUsaProtection ? bytesPerIndexRecord : GetNumberOfBytesInUse(bytesPerIndexRecord);
byte[] buffer = new byte[length];
multiSectorHeader.WriteBytes(buffer, 0x00);
LittleEndianWriter.WriteUInt64(buffer, 0x08, LogFileSequenceNumber);
LittleEndianWriter.WriteUInt64(buffer, 0x10, (ulong)RecordVBN);
m_indexHeader.WriteBytes(buffer, 0x18);
LittleEndianWriter.WriteUInt16(buffer, UpdateSequenceArrayOffset, UpdateSequenceNumber);
IndexEntry.WriteIndexEntries(buffer, UpdateSequenceArrayOffset + updateSequenceArrayPaddedLength, IndexEntries);
if (applyUsaProtection)
{
MultiSectorHelper.ApplyUsaProtection(buffer, 0);
}
return(buffer);
}
public int GetNumberOfBytesInUse(int bytesPerIndexRecord)
{
int strideCount = bytesPerIndexRecord / MultiSectorHelper.BytesPerStride;
ushort updateSequenceArraySize = (ushort)(1 + strideCount);
int updateSequenceArrayPaddedLength = (int)Math.Ceiling((double)(updateSequenceArraySize * 2) / 8) * 8;
return(IndexHeaderOffset + IndexHeader.Length + updateSequenceArrayPaddedLength + IndexEntry.GetLength(IndexEntries));
}
public byte[] GetBytes(int bytesPerIndexRecord)
{
int strideCount = bytesPerIndexRecord / MultiSectorHelper.BytesPerStride;
ushort updateSequenceArraySize = (ushort)(1 + strideCount);
MultiSectorHeader multiSectorHeader = new MultiSectorHeader(ValidSignature, UpdateSequenceArrayOffset, updateSequenceArraySize);
int updateSequenceArrayPaddedLength = (int)Math.Ceiling((double)(updateSequenceArraySize * 2) / 8) * 8;
m_indexHeader.EntriesOffset = (uint)(IndexHeader.Length + updateSequenceArrayPaddedLength);
m_indexHeader.TotalLength = (uint)(IndexHeader.Length + updateSequenceArrayPaddedLength + IndexEntry.GetLength(IndexEntries));
m_indexHeader.AllocatedLength = (uint)(bytesPerIndexRecord - IndexHeaderOffset);
byte[] buffer = new byte[bytesPerIndexRecord];
multiSectorHeader.WriteBytes(buffer, 0x00);
LittleEndianWriter.WriteUInt64(buffer, 0x08, LogFileSequenceNumber);
LittleEndianWriter.WriteUInt64(buffer, 0x10, (ulong)RecordVBN);
m_indexHeader.WriteBytes(buffer, 0x18);
IndexEntry.WriteIndexEntries(buffer, UpdateSequenceArrayOffset + updateSequenceArrayPaddedLength, IndexEntries);
// Write UpdateSequenceNumber and UpdateSequenceReplacementData
List <byte[]> updateSequenceReplacementData = MultiSectorHelper.EncodeSegmentBuffer(buffer, 0, bytesPerIndexRecord, UpdateSequenceNumber);
MultiSectorHelper.WriteUpdateSequenceArray(buffer, UpdateSequenceArrayOffset, updateSequenceArraySize, UpdateSequenceNumber, updateSequenceReplacementData);
return(buffer);
}
