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Macros | Functions
OcCompressionLib.h File Reference

Go to the source code of this file.

Macros

#define OC_COMPRESSION_MAX_LENGTH   BASE_1GB
 

Functions

UINT8 * CompressLZSS (OUT UINT8 *Dst, IN UINT32 DstLen, IN UINT8 *Src, IN UINT32 SrcLen)
 
UINT32 DecompressLZSS (OUT UINT8 *Dst, IN UINT32 DstLen, IN UINT8 *Src, IN UINT32 SrcLen)
 
UINTN DecompressLZVN (OUT UINT8 *Dst, IN UINTN DstLen, IN CONST UINT8 *Src, IN UINTN SrcLen)
 
UINT8 * CompressZLIB (OUT UINT8 *Dst, IN UINT32 DstLen, IN CONST UINT8 *Src, IN UINT32 SrcLen)
 
UINTN DecompressZLIB (OUT UINT8 *Dst, IN UINTN DstLen, IN CONST UINT8 *Src, IN UINTN SrcLen)
 
UINT32 DecompressMaskedRLE24 (OUT UINT8 *Dst, IN UINT32 DstLen, IN UINT8 *Src, IN UINT32 SrcLen, IN UINT8 *Mask, IN UINT32 MaskLen, IN BOOLEAN Premultiply)
 
UINT32 Adler32 (IN CONST UINT8 *Buffer, IN UINT32 BufferLen)
 

Detailed Description

Copyright (C) 2019, vit9696. All rights reserved.

All rights reserved.

This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

Definition in file OcCompressionLib.h.

Macro Definition Documentation

◆ OC_COMPRESSION_MAX_LENGTH

#define OC_COMPRESSION_MAX_LENGTH   BASE_1GB

Maximumum compression and decompression buffer size may vary from 0 to OC_COMPRESSION_MAX_LENGTH inclusive.

Definition at line 22 of file OcCompressionLib.h.

Function Documentation

◆ Adler32()

UINT32 Adler32 ( IN CONST UINT8 * Buffer,
IN UINT32 BufferLen )

Calculates Adler32 checksum.

Parameters
[in]BufferSource buffer.
[in]BufferLenSource buffer size.
Returns
Checksum on success otherwise 0.

Definition at line 80 of file zlib_uefi.c.

◆ CompressLZSS()

UINT8 * CompressLZSS ( OUT UINT8 * Dst,
IN UINT32 DstLen,
IN UINT8 * Src,
IN UINT32 SrcLen )

Allow the use of extra adler32 validation. Not very useful as dmg has own checks. Compress buffer with LZSS algorithm.

Parameters
[out]DstDestination buffer.
[in]DstLenDestination buffer size.
[in]SrcSource buffer.
[in]SrcLenSource buffer size.
Returns
Dst + CompressedLen on success otherwise NULL.

◆ CompressZLIB()

UINT8 * CompressZLIB ( OUT UINT8 * Dst,
IN UINT32 DstLen,
IN CONST UINT8 * Src,
IN UINT32 SrcLen )

Compress buffer with ZLIB algorithm.

Parameters
[out]DstDestination buffer.
[in]DstLenDestination buffer size.
[in]SrcSource buffer.
[in]SrcLenSource buffer size.
Returns
Dst + CompressedLen on success otherwise NULL.

Definition at line 38 of file zlib_uefi.c.

◆ DecompressLZSS()

UINT32 DecompressLZSS ( OUT UINT8 * Dst,
IN UINT32 DstLen,
IN UINT8 * Src,
IN UINT32 SrcLen )

Decompress buffer with LZSS algorithm.

Parameters
[out]DstDestination buffer.
[in]DstLenDestination buffer size.
[in]SrcSource buffer.
[in]SrcLenSource buffer size.
Returns
DecompressedLen on success otherwise 0.

◆ DecompressLZVN()

UINTN DecompressLZVN ( OUT UINT8 * Dst,
IN UINTN DstLen,
IN CONST UINT8 * Src,
IN UINTN SrcLen )

Decompress buffer with LZVN algorithm.

Parameters
[out]DstDestination buffer.
[in]DstLenDestination buffer size.
[in]SrcSource buffer.
[in]SrcLenSource buffer size.
Returns
DecompressedLen on success otherwise 0.

◆ DecompressMaskedRLE24()

UINT32 DecompressMaskedRLE24 ( OUT UINT8 * Dst,
IN UINT32 DstLen,
IN UINT8 * Src,
IN UINT32 SrcLen,
IN UINT8 * Mask,
IN UINT32 MaskLen,
IN BOOLEAN Premultiply )

Decompress buffer with RLE24 algorithm and 8-bit alpha. This algorithm is used for encoding IT32/T8MK images in ICNS.

Parameters
[out]DstDestination buffer.
[in]DstLenDestination buffer size.
[in]SrcSource buffer.
[in]SrcLenSource buffer size.
[in]MaskSource buffer.
[in]MaskLenSource buffer size.
[in]PremultiplyMultiply source channels by alpha.
Returns
DecompressedLen on success otherwise 0.

Definition at line 18 of file OcCompressionLib.c.

◆ DecompressZLIB()

UINTN DecompressZLIB ( OUT UINT8 * Dst,
IN UINTN DstLen,
IN CONST UINT8 * Src,
IN UINTN SrcLen )

Decompress buffer with ZLIB algorithm.

Parameters
[out]DstDestination buffer.
[in]DstLenDestination buffer size.
[in]SrcSource buffer.
[in]SrcLenSource buffer size.
Returns
DecompressedLen on success otherwise 0.

Definition at line 59 of file zlib_uefi.c.