Initialise for compression.
Set the reader, writer and read-write context in
the CompressCtxt struct. Then call initCompress()
The bits parameter is only used when compressing. It sets the maximum
size of a code word. The value must be in the range 9 to 16 or else
zero to select the default of 16.
Initialise for compression. Set the reader, writer and read-write context in the CompressCtxt struct. Then call initCompress() The bits parameter is only used when compressing. It sets the maximum size of a code word. The value must be in the range 9 to 16 or else zero to select the default of 16.