Celartem::Zlib Struct Reference

#include <cel_compress.h>

List of all members.

Public Types
enum	{ levelDefault = -1 }
Static Public Member Functions
static void	compress (SimpleArray< u8 > &outBuffer, const u8 *CEL_RESTRICT inData, size_t inSize, int compLevel=levelDefault)
static void	compress (u8 *CEL_RESTRICT outBuffer, size_t *CEL_RESTRICT ioSize, const u8 *CEL_RESTRICT inData, size_t inSize, int compLevel=levelDefault)
static void	decompress (SimpleArray< u8 > &outBuffer, const u8 *CEL_RESTRICT inData, size_t inSize)
static void	decompress (u8 *CEL_RESTRICT outBuffer, size_t *ioSize, const u8 *CEL_RESTRICT inData, size_t inSize)
static u32	adler32 (u32 inCurrentAdler, const u8 *CEL_RESTRICT inData, size_t inSize)
static u32	crc32 (u32 inCurrentCRC, const u8 *CEL_RESTRICT inData, size_t inSize)

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Detailed Description

Compression/Decompression using zlib.

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Member Enumeration Documentation

anonymous enum

Enumerator:

levelDefault

compression level default; used with compress function.

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Member Function Documentation

static u32 Celartem::Zlib::adler32	(	u32	inCurrentAdler,
		const u8 *CEL_RESTRICT	inData,
		size_t	inSize
	)			[static]

This function updates zlib origin Adler-32 checksum.
If inData is NULL, this funcion returnes the initial value for the checksum.

Parameters:

	inCurrentCRC	Current checksum value.
	inData
	inData	Pointer that points the data to be verified.
	inSize	The size of the data specified by inData.

The following code is a sample usage of this function:

u32 crc = Zlib::adler32(0, NULL, 0);
while(...)
{
    crc = Zlib::adler32(crc, buffer, length);
}
if(crc != original_crc) error();

static void Celartem::Zlib::compress	(	SimpleArray< u8 > &	outBuffer,
		const u8 *CEL_RESTRICT	inData,
		size_t	inSize,
		int	compLevel = levelDefault
	)			[static]

This function compresses the specified data using zlib.

Parameters:

	outBuffer	A buffer to receive the compressed result.
	inData	Pointer that points the data to be compressed.
	inSize	The size of the data specified by inData.
	compLevel	Compression level in 1-9. Smaller number means faster but low-compression ratio. levelDefault currently stands for 6.

static void Celartem::Zlib::compress	(	u8 *CEL_RESTRICT	outBuffer,
		size_t *CEL_RESTRICT	ioSize,
		const u8 *CEL_RESTRICT	inData,
		size_t	inSize,
		int	compLevel = levelDefault
	)			[static]

This function compresses the specified data using zlib.

Parameters:

	outBuffer	A buffer to receive the compressed result.
	ioSize	[IN] The size of the buffer specified by outBuffer. [OUT] The bytes written on the outBuffer.
	inData	Pointer that points the data to be compressed.
	inSize	The size of the data specified by inData.
	compLevel	Compression level in 1-9. Smaller number means faster but low-compression ratio. levelDefault currently stands for 6.

static u32 Celartem::Zlib::crc32	(	u32	inCurrentCRC,
		const u8 *CEL_RESTRICT	inData,
		size_t	inSize
	)			[static]

This function updates CRC32 checksum.
If inData is NULL, this funcion returnes the initial value for the checksum.

Parameters:

	inCurrentCRC	Current checksum value.
	inData
	inData	Pointer that points the data to be verified.
	inSize	The size of the data specified by inData.

The following code is a sample usage of this function:

u32 crc = Zlib::crc32(0, NULL, 0);
while(...)
{
    crc = Zlib::crc32(crc, buffer, length);
}
if(crc != original_crc) error();

static void Celartem::Zlib::decompress	(	u8 *CEL_RESTRICT	outBuffer,
		size_t *	ioSize,
		const u8 *CEL_RESTRICT	inData,
		size_t	inSize
	)			[static]

This function decompresses the specified data using zlib.

Parameters:

	outBuffer	The buffer to receive the decompressed result.
	ioSize	[IN] The size of the buffer specified by outBuffer. [OUT] The bytes written on the outBuffer.
	inData	Pointer that points the data to be decompressed.
	inSize	The size of the data specified by inData.

static void Celartem::Zlib::decompress	(	SimpleArray< u8 > &	outBuffer,
		const u8 *CEL_RESTRICT	inData,
		size_t	inSize
	)			[static]

This function decompresses the specified data using zlib.

Parameters:

	outBuffer	A buffer to receive the decompressed result. This buffer must be large enough to receive the decompressed result.
	inData	Pointer that points the data to be decompressed.
	inSize	The size of the data specified by inData.

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The documentation for this struct was generated from the following file:

• cel_compress.h