KisLzfCompression Class Reference

#include <kis_lzf_compression.h>

Inheritance diagram for KisLzfCompression:

Public Member Functions
qint32	compress (const quint8 *input, qint32 inputLength, quint8 *output, qint32 outputLength) override
qint32	decompress (const quint8 *input, qint32 inputLength, quint8 *output, qint32 outputLength) override
	KisLzfCompression ()
qint32	outputBufferSize (qint32 dataSize) override
	~KisLzfCompression () override
Public Member Functions inherited from KisAbstractCompression
virtual void	adjustForDataSize (qint32 dataSize)
	KisAbstractCompression ()
virtual	~KisAbstractCompression ()

Additional Inherited Members
Static Public Member Functions inherited from KisAbstractCompression
static void	delinearizeColors (quint8 *input, quint8 *output, qint32 dataSize, qint32 pixelSize)
static void	linearizeColors (quint8 *input, quint8 *output, qint32 dataSize, qint32 pixelSize)

Detailed Description

Definition at line 12 of file kis_lzf_compression.h.

Constructor & Destructor Documentation

KisLzfCompression()

KisLzfCompression::KisLzfCompression

(

)

TODO: make working memory htab[HASH_SIZE] be in heap and shared inside the class

Definition at line 240 of file kis_lzf_compression.cpp.

{
}

~KisLzfCompression()

KisLzfCompression::~KisLzfCompression ( )

override

Definition at line 249 of file kis_lzf_compression.cpp.

{
}

Member Function Documentation

compress()

qint32 KisLzfCompression::compress ( const quint8 * input, qint32 inputLength, quint8 * output, qint32 outputLength )

overridevirtual

Compresses input buffer into output buffer. WARNING: Be careful, output buffer must be at least outputBufferSize(inputLength) size!

Parameters

input	the input
inputLength	the input length
output	the output
outputLength	is not used!

Returns

number of bytes written to the output buffer and 0 if error occurred.

See also

outputBufferSize()

Implements KisAbstractCompression.

Definition at line 253 of file kis_lzf_compression.cpp.

{
    return lzff_compress(input, inputLength, output, outputLength);
}

References lzff_compress().

decompress()

qint32 KisLzfCompression::decompress ( const quint8 * input, qint32 inputLength, quint8 * output, qint32 outputLength )

overridevirtual

Decompresses input buffer into output buffer. WARNING: output buffer must be able to fit the input data

Parameters

input	the input
inputLength	the input length
output	the output
outputLength	is not used!

Returns

number of bytes written to the output buffer and 0 if error occurred.

Implements KisAbstractCompression.

Definition at line 258 of file kis_lzf_compression.cpp.

{
    return lzff_decompress(input, inputLength, output, outputLength);
}

References lzff_decompress().

outputBufferSize()

qint32 KisLzfCompression::outputBufferSize ( qint32 dataSize )

overridevirtual

Returns minimal allowed size of output buffer for compression

Implements KisAbstractCompression.

Definition at line 263 of file kis_lzf_compression.cpp.

{
    // WARNING: Copy-pasted from LZO samples, do not know how to prove it
    return dataSize + dataSize / 16 + 64 + 3;
}

---

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

• libs/image/tiles3/swap/kis_lzf_compression.h
• libs/image/tiles3/swap/kis_lzf_compression.cpp