Add Fast LZMA2 codec

CPP/7zip/Compress/Lzma2Encoder.h

@@ -4,8 +4,10 @@
 #define __LZMA2_ENCODER_H
 
 #include "../../../C/Lzma2Enc.h"
+#include "../../../C/fast-lzma2/fast-lzma2.h"
 
 #include "../../Common/MyCom.h"
+#include "../../Common/MyBuffer.h"
 
 #include "../ICoder.h"
 
@@ -37,6 +39,32 @@ public:
   virtual ~CEncoder();
 };
 
+class CFastEncoder :
+  public ICompressCoder,
+  public ICompressSetCoderProperties,
+  public ICompressWriteCoderProperties,
+  public CMyUnknownImp
+{
+  FL2_CCtx* _encoder;
+  CByteBuffer inBuffer;
+  UInt64 reduceSize;
+  UInt32 dictSize;
+
+public:
+  MY_UNKNOWN_IMP3(
+    ICompressCoder,
+    ICompressSetCoderProperties,
+    ICompressWriteCoderProperties)
+
+    STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream,
+      const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
+  STDMETHOD(SetCoderProperties)(const PROPID *propIDs, const PROPVARIANT *props, UInt32 numProps);
+  STDMETHOD(WriteCoderProperties)(ISequentialOutStream *outStream);
+
+  CFastEncoder();
+  virtual ~CFastEncoder();
+};
+
 }}
 
 #endif