public void Write(AssetsWriter writer)
{
writer.WriteBEInt32(MetadataSize);
writer.WriteBEInt32(FileSize);
writer.WriteBEInt32(Version);
writer.WriteBEInt32(ObjectDataOffset);
writer.Write(IsBigEndian);
writer.AlignTo(4);
//writer.Write(new byte[3]);
}
public void Write(AssetsWriter writer, byte[] compressedData)
{
if (fileVersion != 6)
{
throw new NotSupportedException("File version is not supported");
}
//basic header stuff
writer.WriteCString(signature);
writer.WriteBEInt32(fileVersion);
// TODO ADD
// WriteDirectory to a MemoryStream
// Check length of the resultant byte array, should be = UncompressedLength
// Compress it
// Write compressed length
MemoryStream s = new MemoryStream();
using (AssetsWriter w = new AssetsWriter(s))
{
WriteDirectory(w);
}
int uncompressedLength = (int)s.Length;
// todo
var compressedMetadata = LZ4.LZ4Codec.EncodeHC(s.ToArray(), 0, uncompressedLength);
BundleSize += compressedMetadata.Length;
writer.WriteCString(PlayerVersion);
writer.WriteCString(EngineVersion);
writer.WriteBEInt64(BundleSize);
// compressedSize is actually the size of the METADATA byte array
// The one with the Entries and BlockInfos + unknown directory header
writer.WriteBEInt32(compressedMetadata.Length);
writer.WriteBEInt32(uncompressedLength);
writer.WriteBEUInt32(flags);
if (!IsDirectoryAtEnd(flags))
{
// Actually write the directory information to the file
writer.Write(compressedMetadata);
}
// Now write the actual data the BlockInfos use
writer.Write(compressedData);
if (IsDirectoryAtEnd(flags))
{
// Actually write the directory information to the file
writer.Write(compressedMetadata);
}
}
private void WriteDirectory(AssetsWriter writer)
{
//unknown?
writer.Write(_directoryUnknown);
writer.WriteBEInt32(BlockInfos.Count);
for (int i = 0; i < BlockInfos.Count; i++)
{
BlockInfos[i].Write(writer);
}
writer.WriteBEInt32(Entries.Count);
for (int i = 0; i < Entries.Count; i++)
{
Entries[i].Write(writer);
}
}