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lz4-delphi

Delphi bindings for lz4.

Includes easy-to-use wrapper class and an default mode implementation of the new lz4s streaming format.

A Binding for xxHash is also present, since it is necessary for lz4s;

Lz4 Version r119;

Object Files

Contributed binaries are build using MinGW 4.8.1. and the original sourcecode by Yann Collet: lz4 and xxHash.

Compability

Tested with RadStudio/Delphi XE2-XE8, 10.0-10.4, 11 and 12. Does not work with older versions due to the object files not being compatible with the older linkers.

Currently Win32 lib files only.

Licence

See Licence files:

lz4-delphi

lz4

xxHash

Speed and Validation Test

System: Intel Core i7 M640 Dual Core, 2.80GHz, 8GB RAM
Input: 270MB Dicom Medical Image File

LZ4 ( pure lz4 )
LZ4SS  ( lz4s via TMemoryStream )
LZ4SSN ( lz4s via TMemoryStream - no Hash Stream Checks )
LZ4SM  ( lz4s via Memory Pointer )
LZ4SMN ( lz4s via Memory Pointer - no Hash Stream Checks )

LZ4 Delphi Binding Library Test
   LZ4:    276676254 ->    168943648 ( 61,06%),       436,13 MB/s
   LZ4:    276676254 <-    168943648 ( 61,06%),      1589,51 MB/s

 LZ4SS:    276676254 ->    168944258 ( 61,06%),       136,36 MB/s
 LZ4SS:    276676254 <-    168944258 ( 61,06%),       203,44 MB/s

LZ4SSN:    276676254 ->    168944254 ( 61,06%),       190,10 MB/s
LZ4SSN:    276676254 <-    168944254 ( 61,06%),       293,83 MB/s

 LZ4SM:    276676254 ->    168944239 ( 61,06%),       211,43 MB/s
 LZ4SM:    276676254 <-    168944239 ( 61,06%),       451,04 MB/s

LZ4SMN:    276676254 ->    168944235 ( 61,06%),       313,37 MB/s
LZ4SMN:    276676254 <-    168944235 ( 61,06%),      1474,07 MB/s

 SynLZ:    276676254 ->    155036174 ( 56,04%),       362,44 MB/s
 SynLZ:    277761274 <-    155036174 ( 55,82%),       330,29 MB/s

Implementation is compared to SynLZ

Comparism using Yann Collets with lz4 delivered fullbench32.exe.

Only necessary results are shown:

*** LZ4 speed analyzer r118 32-bits, by Yann Collet (Jul  3 2014) ***
LZ4_compress                 : 276676254 -> 168969345 (61.07%),  463.1 MB/s
LZ4_compress_continue        : 276676254 -> 168943960 (61.06%),  330.7 MB/s
LZ4_decompress_safe          : 276676254 ->                     1645.6 MB/s

Support

Please open a ticket or contribute a bugifx / improvement.

No commercial support, at the moment.