cLZ77 Class Reference

Public Member Functions
int	Compress (unsigned char *in, size_t in_len, unsigned char *out, size_t *out_len)
	Compress a block of data using an LZ77 coder.
int	Decompress (unsigned char *in, size_t in_len, unsigned char *out, size_t *out_len)
	Uncompress a block of data using an LZ77 decoder.

Member Function Documentation

Compress()

int cLZ77::Compress	(	unsigned char *	in,
		size_t	in_len,
		unsigned char *	out,
		size_t *	out_len )

Compress a block of data using an LZ77 coder.

Parameters

in	Input (uncompressed) buffer.
in_len	Number of input bytes.
out	Output (compressed) buffer. This buffer must be 0.4% larger than the input buffer, plus one byte.
out_len	Output length.

Returns

Always return 0.

Decompress()

int cLZ77::Decompress	(	unsigned char *	in,
		size_t	in_len,
		unsigned char *	out,
		size_t *	out_len )

Uncompress a block of data using an LZ77 decoder.

Parameters

in	Input (compressed) buffer.
in_len	Number of input bytes.
out	Output (uncompressed) buffer. This buffer must be large enough to hold the uncompressed data.
out_len	Output length.

Returns

0 on success. -1 if not enough data was read, -2 if too much data was read.

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The documentation for this class was generated from the following files:

• code/qcommon/lz77.h
• code/qcommon/lz77.cpp