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Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/Decompress.h')
| -rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/Decompress.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/Decompress.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/Decompress.h new file mode 100644 index 0000000000..965b7d2f45 --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/Decompress.h @@ -0,0 +1,122 @@ +/** @file + The Decompress Protocol Interface as defined in UEFI spec + + Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR> + 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. + +**/ + +#ifndef __DECOMPRESS_H__ +#define __DECOMPRESS_H__ + +#define EFI_DECOMPRESS_PROTOCOL_GUID \ + { \ + 0xd8117cfe, 0x94a6, 0x11d4, {0x9a, 0x3a, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \ + } + +typedef struct _EFI_DECOMPRESS_PROTOCOL EFI_DECOMPRESS_PROTOCOL; + +/** + The GetInfo() function retrieves the size of the uncompressed buffer + and the temporary scratch buffer required to decompress the buffer + specified by Source and SourceSize. If the size of the uncompressed + buffer or the size of the scratch buffer cannot be determined from + the compressed data specified by Source and SourceData, then + EFI_INVALID_PARAMETER is returned. Otherwise, the size of the uncompressed + buffer is returned in DestinationSize, the size of the scratch buffer is + returned in ScratchSize, and EFI_SUCCESS is returned. + + The GetInfo() function does not have a scratch buffer available to perform + a thorough checking of the validity of the source data. It just retrieves + the 'Original Size' field from the beginning bytes of the source data and + output it as DestinationSize. And ScratchSize is specific to the decompression + implementation. + + @param This A pointer to the EFI_DECOMPRESS_PROTOCOL instance. + @param Source The source buffer containing the compressed data. + @param SourceSize The size, in bytes, of source buffer. + @param DestinationSize A pointer to the size, in bytes, of the uncompressed buffer + that will be generated when the compressed buffer specified + by Source and SourceSize is decompressed. + @param ScratchSize A pointer to the size, in bytes, of the scratch buffer that + is required to decompress the compressed buffer specified by + Source and SourceSize. + + @retval EFI_SUCCESS The size of the uncompressed data was returned in DestinationSize + and the size of the scratch buffer was returned in ScratchSize. + @retval EFI_INVALID_PARAMETER The size of the uncompressed data or the size of the scratch + buffer cannot be determined from the compressed data specified by + Source and SourceData. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_DECOMPRESS_GET_INFO)( + IN EFI_DECOMPRESS_PROTOCOL *This, + IN VOID *Source, + IN UINT32 SourceSize, + OUT UINT32 *DestinationSize, + OUT UINT32 *ScratchSize + ); + +/** + The Decompress() function extracts decompressed data to its original form. + + This protocol is designed so that the decompression algorithm can be + implemented without using any memory services. As a result, the + Decompress() function is not allowed to call AllocatePool() or + AllocatePages() in its implementation. It is the caller's responsibility + to allocate and free the Destination and Scratch buffers. + + If the compressed source data specified by Source and SourceSize is + successfully decompressed into Destination, then EFI_SUCCESS is returned. + If the compressed source data specified by Source and SourceSize is not in + a valid compressed data format, then EFI_INVALID_PARAMETER is returned. + + @param This A pointer to the EFI_DECOMPRESS_PROTOCOL instance. + @param Source The source buffer containing the compressed data. + @param SourceSize The size of source data. + @param Destination On output, the destination buffer that contains + the uncompressed data. + @param DestinationSize The size of destination buffer. The size of destination + buffer needed is obtained from GetInfo(). + @param Scratch A temporary scratch buffer that is used to perform the + decompression. + @param ScratchSize The size of scratch buffer. The size of scratch buffer needed + is obtained from GetInfo(). + + @retval EFI_SUCCESS Decompression completed successfully, and the uncompressed + buffer is returned in Destination. + @retval EFI_INVALID_PARAMETER The source buffer specified by Source and SourceSize is + corrupted (not in a valid compressed format). + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_DECOMPRESS_DECOMPRESS)( + IN EFI_DECOMPRESS_PROTOCOL *This, + IN VOID *Source, + IN UINT32 SourceSize, + IN OUT VOID *Destination, + IN UINT32 DestinationSize, + IN OUT VOID *Scratch, + IN UINT32 ScratchSize + ); + +/// +/// Provides a decompression service. +/// +struct _EFI_DECOMPRESS_PROTOCOL { + EFI_DECOMPRESS_GET_INFO GetInfo; + EFI_DECOMPRESS_DECOMPRESS Decompress; +}; + +extern EFI_GUID gEfiDecompressProtocolGuid; + +#endif |