void StreamCompressedContent(IO.EndianStream s)
{
if (s.IsReading)
{
using (var cs = new CompressedStream(true))
{
Stream(s, EnumFlags.Test(Flags, FileFlags.EncryptContent), cs,
userKey: Header.DataCryptKey, streamLeftovers: StreamLeftovers);
cs.Decompress();
Content = cs.UncompressedData;
}
}
else if (s.IsWriting)
{
using (var cs = new CompressedStream(true))
using (var ms = new System.IO.MemoryStream(kMaxContentSize))
using (var sout = new IO.EndianWriter(ms, s.ByteOrder))
{
sout.Write(Content);
sout.Seek(0);
cs.InitializeFromStream(ms);
cs.Compress();
Stream(s, EnumFlags.Test(Flags, FileFlags.EncryptContent), cs,
userKey: Header.DataCryptKey, streamLeftovers: StreamLeftovers);
}
}
}
public void Write(IO.EndianWriter s)
{
//Flags = EnumFlags.Remove(Flags, FileFlags.EncryptHeader | FileFlags.EncryptContent);
s.Write(Flags, FileFlagsStreamer.Instance);
s.Write((ushort)kVersion);
Write(s, EnumFlags.Test(Flags, FileFlags.EncryptHeader), Header, MediaHeader.kSizeOf);
GenerateHash();
if (EnumFlags.Test(Flags, FileFlags.CompressContent))
{
using (var cs = new CompressedStream(true))
using (var ms = new System.IO.MemoryStream(kMaxContentSize))
using (var sout = new IO.EndianWriter(ms, Shell.EndianFormat.Big))
{
sout.Write(Content);
sout.Seek(0);
cs.InitializeFromStream(ms);
cs.Compress();
Write(s, EnumFlags.Test(Flags, FileFlags.EncryptContent), cs,
userKey: Header.DataCryptKey, writeLeftovers: WriteLeftovers);
}
}
else
{
s.Write(Content);
}
}
public static void CompressFromStream(IO.EndianWriter blockStream, System.IO.Stream source,
out uint streamAdler, out int streamSize)
{
Contract.Requires <ArgumentNullException>(blockStream != null);
Contract.Requires <ArgumentNullException>(source != null);
using (var ms = new System.IO.MemoryStream((int)source.Length + Header.kSizeOf))
using (var s = new IO.EndianStream(ms, Shell.EndianFormat.Big, permissions: FA.Write))
using (var cs = new CompressedStream())
{
s.StreamMode = FA.Write;
cs.InitializeFromStream(source);
cs.Compress();
cs.Serialize(s);
ms.Position = 0;
streamSize = (int)ms.Length;
streamAdler = Adler32.Compute(ms, streamSize);
ms.WriteTo(blockStream.BaseStream);
}
}
