/usr/include/root/Compression.h is in libroot-core-dev 5.34.00-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | // @(#)root/zip:$Id: Compression.h 39885 2011-06-22 14:09:49Z rdm $
// Author: David Dagenhart May 2011
/*************************************************************************
* Copyright (C) 1995-2011, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
#ifndef ROOT_Compression
#define ROOT_Compression
namespace ROOT {
// The global settings depend on a global variable named
// R__ZipMode which can be modified by a global function
// named R__SetZipMode. Both are defined in Bits.h.
// The default is to use the global setting
// and the default of the global setting is to use the
// ZLIB compression algorithm. The LZMA algorithm
// (from the XZ package) is also available.
// The LZMA compression usually results
// in greater compression factors, but takes more CPU time
// and memory when compressing. LZMA memory usage is particularly
// high for compression levels 8 and 9.
//
// The current algorithms support level 1 to 9. The higher
// the level the greater the compression and more CPU time
// and memory resources used during compression. Level 0
// means no compression.
enum ECompressionAlgorithm { kUseGlobalSetting,
kZLIB,
kLZMA,
kOldCompressionAlgo,
// if adding new algorithm types,
// keep this enum value last
kUndefinedCompressionAlgorithm
};
int CompressionSettings(ECompressionAlgorithm algorithm,
int compressionLevel);
}
#endif
|