mirror of https://github.com/acidanthera/audk.git
95 lines
4.3 KiB
C
95 lines
4.3 KiB
C
/** @file
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Return UEFI Decompress Protocol
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __UEFI_DECPOMPRESS_LIB_H__
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#define __UEFI_DECPOMPRESS_LIB_H__
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/**
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Retrieves the size of the uncompressed buffer and the size of the scratch buffer.
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Retrieves the size of the uncompressed buffer and the temporary scratch buffer
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required to decompress the buffer specified by Source and SourceSize.
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If the size of the uncompressed buffer or the size of the scratch buffer cannot
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be determined from the compressed data specified by Source and SourceData,
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then RETURN_INVALID_PARAMETER is returned. Otherwise, the size of the uncompressed
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buffer is returned in DestinationSize, the size of the scratch buffer is returned
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in ScratchSize, and RETURN_SUCCESS is returned.
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This function does not have scratch buffer available to perform a thorough
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checking of the validity of the source data. It just retrieves the "Original Size"
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field from the beginning bytes of the source data and output it as DestinationSize.
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And ScratchSize is specific to the decompression implementation.
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If Source is NULL, then ASSERT().
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If DestinationSize is NULL, then ASSERT().
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If ScratchSize is NULL, then ASSERT().
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@param Source The source buffer containing the compressed data.
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@param SourceSize The size, in bytes, of the source buffer.
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@param DestinationSize A pointer to the size, in bytes, of the uncompressed buffer
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that will be generated when the compressed buffer specified
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by Source and SourceSize is decompressed..
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@param ScratchSize A pointer to the size, in bytes, of the scratch buffer that
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is required to decompress the compressed buffer specified
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by Source and SourceSize.
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@retval RETURN_SUCCESS The size of destination buffer and the size of scratch
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buffer are successull retrieved.
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@retval RETURN_INVALID_PARAMETER The source data is corrupted
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**/
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RETURN_STATUS
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EFIAPI
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UefiDecompressGetInfo (
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IN CONST VOID *Source,
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IN UINT32 SourceSize,
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OUT UINT32 *DestinationSize,
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OUT UINT32 *ScratchSize
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);
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/**
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Decompresses a compressed source buffer.
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This function is designed so that the decompression algorithm can be implemented
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without using any memory services. As a result, this function is not allowed to
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call any memory allocation services in its implementation. It is the caller's r
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esponsibility to allocate and free the Destination and Scratch buffers.
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If the compressed source data specified by Source is sucessfully decompressed
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into Destination, then RETURN_SUCCESS is returned. If the compressed source data
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specified by Source is not in a valid compressed data format,
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then RETURN_INVALID_PARAMETER is returned.
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If Source is NULL, then ASSERT().
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If Destination is NULL, then ASSERT().
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If the required scratch buffer size > 0 and Scratch is NULL, then ASSERT().
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@param Source The source buffer containing the compressed data.
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@param Destination The destination buffer to store the decompressed data
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@param Scratch A temporary scratch buffer that is used to perform the decompression.
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This is an optional parameter that may be NULL if the
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required scratch buffer size is 0.
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@retval RETURN_SUCCESS Decompression is successfull
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@retval RETURN_INVALID_PARAMETER The source data is corrupted
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**/
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RETURN_STATUS
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EFIAPI
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UefiDecompress (
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IN CONST VOID *Source,
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IN OUT VOID *Destination,
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IN OUT VOID *Scratch
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);
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#endif
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