public List <M3ArchiveFileEntry> ExtractFileEntriesFromArchive(byte[] headerData, bool containsSubFolders = true)
{
List <M3ArchiveFileEntry> entries = new List <M3ArchiveFileEntry>();
int headerIndex = sizeof(UInt32);
int metaDataStartIndex;
byte[] folderNameBytes;
string folderName = "";
M3ArchiveFileEntry entry;
while (headerIndex + sizeof(UInt32) < headerData.Length)
{
if (containsSubFolders)
{
folderNameBytes = headerData.Skip(headerIndex).Take(sizeof(UInt32)).ToArray();
folderName = Encoding.ASCII.GetString(folderNameBytes);
headerIndex += sizeof(UInt32);
}
// directoryIndex is stored as 24 bit int
UInt16 part = BitConverter.ToUInt16(headerData, headerIndex);
uint directoryIndex = (uint)(part | (headerData[headerIndex + 2] << 16));
uint subItemCount = headerData[headerIndex + 3];
headerIndex += sizeof(UInt32);
for (int i = 0; i < subItemCount; i++)
{
// READ VALUES
entry = new M3ArchiveFileEntry();
entry.Folder = folderName;
entry.Offset = BitConverter.ToUInt32(headerData, headerIndex);
headerIndex += sizeof(UInt32);
entry.Size = BitConverter.ToUInt32(headerData, headerIndex);
headerIndex += sizeof(UInt32);
entry.MetaDataSize = BitConverter.ToUInt16(headerData, headerIndex);
headerIndex += sizeof(UInt16);
entry.CubeFace = (M3CubeFace)headerData[headerIndex];
headerIndex += sizeof(byte);
entry.Type = (Myst3ResourceType)headerData[headerIndex];
headerIndex += sizeof(byte);
metaDataStartIndex = headerIndex;
headerIndex += (sizeof(UInt32) * entry.MetaDataSize);
entry.MetaData = new byte[sizeof(UInt32) * entry.MetaDataSize];
Array.Copy(headerData, metaDataStartIndex, entry.MetaData, 0, sizeof(UInt32) * entry.MetaDataSize);
ReadMetaData(entry);
entries.Add(entry);
}
}
return(entries);
}
private void ReadMetaData(M3ArchiveFileEntry entry)
{
// MAKE USE OF META DATA
if (entry.MetaDataSize == 2 && (entry.Type == Myst3ResourceType.SpotItem || entry.Type == Myst3ResourceType.LocalizedSpotItem))
{
// create SpotItemData
entry.SpotItemData.U = BitConverter.ToUInt32(entry.MetaData, 0);
entry.SpotItemData.V = BitConverter.ToUInt32(entry.MetaData, sizeof(UInt32));
}
else if (entry.MetaDataSize == 10 && (entry.Type == Myst3ResourceType.Movie || entry.Type == Myst3ResourceType.MultitrackMovie))
{
// create VideoData
}
else if (entry.Type == Myst3ResourceType.NumMetadata || entry.Type == Myst3ResourceType.TextMetadata)
{
// copy metadata to something accessible to this item
}
else if (entry.MetaDataSize != 0)
{
//throw new Exception("Metadata not read for type " + resType + " size: " + metaDataSize);
}
}
