MdePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / MdePkg / Include / Protocol / Decompress.h

/** @file\r
  The Decompress Protocol Interface as defined in UEFI spec\r
\r
  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#ifndef __DECOMPRESS_H__\r
#define __DECOMPRESS_H__\r
\r
#define EFI_DECOMPRESS_PROTOCOL_GUID \\r
  { \\r
    0xd8117cfe, 0x94a6, 0x11d4, {0x9a, 0x3a, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \\r
  }\r
\r
typedef struct _EFI_DECOMPRESS_PROTOCOL  EFI_DECOMPRESS_PROTOCOL;\r
\r
/**\r
  The GetInfo() function retrieves the size of the uncompressed buffer\r
  and the temporary scratch buffer required to decompress the buffer\r
  specified by Source and SourceSize.  If the size of the uncompressed\r
  buffer or the size of the scratch buffer cannot be determined from\r
  the compressed data specified by Source and SourceData, then\r
  EFI_INVALID_PARAMETER is returned.  Otherwise, the size of the uncompressed\r
  buffer is returned in DestinationSize, the size of the scratch buffer is\r
  returned in ScratchSize, and EFI_SUCCESS is returned.\r
\r
  The GetInfo() function does not have a scratch buffer available to perform\r
  a thorough checking of the validity of the source data. It just retrieves\r
  the 'Original Size' field from the beginning bytes of the source data and\r
  output it as DestinationSize.  And ScratchSize is specific to the decompression\r
  implementation.\r
\r
  @param  This            A pointer to the EFI_DECOMPRESS_PROTOCOL instance.\r
  @param  Source          The source buffer containing the compressed data.\r
  @param  SourceSize      The size, in bytes, of source buffer.\r
  @param  DestinationSize A pointer to the size, in bytes, of the uncompressed buffer\r
                          that will be generated when the compressed buffer specified\r
                          by Source and SourceSize is decompressed.\r
  @param  ScratchSize     A pointer to the size, in bytes, of the scratch buffer that\r
                          is required to decompress the compressed buffer specified by\r
                          Source and SourceSize.\r
\r
  @retval  EFI_SUCCESS           The size of the uncompressed data was returned in DestinationSize\r
                                 and the size of the scratch buffer was returned in ScratchSize.\r
  @retval  EFI_INVALID_PARAMETER The size of the uncompressed data or the size of the scratch\r
                                 buffer cannot be determined from the compressed data specified by\r
                                 Source and SourceData.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_DECOMPRESS_GET_INFO)(\r
  IN EFI_DECOMPRESS_PROTOCOL            *This,\r
  IN   VOID                             *Source,\r
  IN   UINT32                           SourceSize,\r
  OUT  UINT32                           *DestinationSize,\r
  OUT  UINT32                           *ScratchSize\r
  );\r
\r
/**\r
  The Decompress() function extracts decompressed data to its original form.\r
\r
  This protocol is designed so that the decompression algorithm can be\r
  implemented without using any memory services.  As a result, the\r
  Decompress() function is not allowed to call AllocatePool() or\r
  AllocatePages() in its implementation.  It is the caller's responsibility\r
  to allocate and free the Destination and Scratch buffers.\r
\r
  If the compressed source data specified by Source and SourceSize is\r
  successfully decompressed into Destination, then EFI_SUCCESS is returned.\r
  If the compressed source data specified by Source and SourceSize is not in\r
  a valid compressed data format, then EFI_INVALID_PARAMETER is returned.\r
\r
  @param  This            A pointer to the EFI_DECOMPRESS_PROTOCOL instance.\r
  @param  Source          The source buffer containing the compressed data.\r
  @param  SourceSize      The size of source data.\r
  @param  Destination     On output, the destination buffer that contains\r
                          the uncompressed data.\r
  @param  DestinationSize The size of destination buffer. The size of destination\r
                          buffer needed is obtained from GetInfo().\r
  @param  Scratch         A temporary scratch buffer that is used to perform the\r
                          decompression.\r
  @param  ScratchSize     The size of scratch buffer. The size of scratch buffer needed\r
                          is obtained from GetInfo().\r
\r
  @retval  EFI_SUCCESS          Decompression completed successfully, and the uncompressed\r
                                buffer is returned in Destination.\r
  @retval EFI_INVALID_PARAMETER The source buffer specified by Source and SourceSize is\r
                                corrupted (not in a valid compressed format).\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_DECOMPRESS_DECOMPRESS)(\r
  IN EFI_DECOMPRESS_PROTOCOL              *This,\r
  IN     VOID                             *Source,\r
  IN     UINT32                           SourceSize,\r
  IN OUT VOID                             *Destination,\r
  IN     UINT32                           DestinationSize,\r
  IN OUT VOID                             *Scratch,\r
  IN     UINT32                           ScratchSize\r
  );\r
\r
///\r
/// Provides a decompression service.\r
///\r
struct _EFI_DECOMPRESS_PROTOCOL {\r
  EFI_DECOMPRESS_GET_INFO   GetInfo;\r
  EFI_DECOMPRESS_DECOMPRESS Decompress;\r
};\r
\r
extern EFI_GUID gEfiDecompressProtocolGuid;\r
\r
#endif\r