Table 1.
| Type | Name | Description | 
|---|---|---|
| int | TYPE_GZIP | gzip encoding | 
| int | TYPE_ZLIB | zlib AKA deflate encoding | 
| int | TYPE_RAW | raw deflate encoding | 
| int | LEVEL_MIN | minimum compression level | 
| int | TYPE_DEF | default compression level | 
| int | LEVEL_MAX | maximum compression level | 
| int | STRATEGY_DEF | default strategy | 
| int | STRATEGY_FILT | filtered strategy | 
| int | STRATEGY_HUFF | Huffman strategy | 
| int | STRATEGY_RLE | RLE strategy | 
| int | STRATEGY_FIXED | fixed strategy | 
| int | FLUSH_NONE | no forced flush | 
| int | FLUSH_SYNC | synching flush | 
| int | FLUSH_FULL | full flush |