4.20

7zip/Compress/BWT/BlockSort.h

@@ -0,0 +1,29 @@
+// BlockSort.h
+
+#ifndef __BLOCKSORT_H
+#define __BLOCKSORT_H
+
+#include "Common/Types.h"
+
+namespace NCompress {
+
+class CBlockSorter
+{
+  UInt32 *Groups;
+  UInt32 *Flags;
+  UInt32 BlockSize;
+  UInt32 NumSortedBytes;
+  UInt32 BlockSizeMax;
+  UInt32 SortGroup(UInt32 groupOffset, UInt32 groupSize, UInt32 mask, UInt32 maskSize);
+public:
+  UInt32 *Indices;
+  CBlockSorter(): Indices(0) {} 
+  ~CBlockSorter() { Free(); }
+  bool Create(UInt32 blockSizeMax);
+  void Free();
+  UInt32 Sort(const Byte *data, UInt32 blockSize);
+};
+
+}
+
+#endif