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Diffstat (limited to 'Core/Protocol/TianoDecompress.h')
| -rw-r--r-- | Core/Protocol/TianoDecompress.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/Core/Protocol/TianoDecompress.h b/Core/Protocol/TianoDecompress.h new file mode 100644 index 0000000..de5cb54 --- /dev/null +++ b/Core/Protocol/TianoDecompress.h @@ -0,0 +1,139 @@ +/*++ + +Copyright (c) 2004, Intel Corporation +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. + +Module Name: + + TianoDecompress.h + +Abstract: + + The Tiano Decompress Protocol Interface + +--*/ + +#ifndef _TIANO_DECOMPRESS_H_ +#define _TIANO_DECOMPRESS_H_ +#include <EFI.h> + +#define EFI_TIANO_DECOMPRESS_PROTOCOL_GUID \ + { 0xe84cf29c, 0x191f, 0x4eae, 0x96, 0xe1, 0xf4, 0x6a, 0xec, 0xea, 0xea, 0x0b } + +EFI_FORWARD_DECLARATION (EFI_TIANO_DECOMPRESS_PROTOCOL); + +typedef +EFI_STATUS +(EFIAPI *EFI_TIANO_DECOMPRESS_GET_INFO) ( + IN EFI_TIANO_DECOMPRESS_PROTOCOL *This, + IN VOID *Source, + IN UINT32 SourceSize, + OUT UINT32 *DestinationSize, + OUT UINT32 *ScratchSize + ); +/*++ + +Routine Description: + + 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 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. + +Arguments: + + This - The protocol instance pointer + Source - The source buffer containing the compressed data. + SourceSize - The size, in bytes, of source buffer. + 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. + 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. + +Returns: + EFI_SUCCESS - The size of the uncompressed data was returned in DestinationSize + and the size of the scratch buffer was returned in ScratchSize. + 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_TIANO_DECOMPRESS_DECOMPRESS) ( + IN EFI_TIANO_DECOMPRESS_PROTOCOL *This, + IN VOID* Source, + IN UINT32 SourceSize, + IN OUT VOID* Destination, + IN UINT32 DestinationSize, + IN OUT VOID* Scratch, + IN UINT32 ScratchSize + ); +/*++ + +Routine Description: + + 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 + sucessfully 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. + +Arguments: + + This - The protocol instance pointer + Source - The source buffer containing the compressed data. + SourceSize - The size of source data. + Destination - On output, the destination buffer that contains + the uncompressed data. + DestinationSize - The size of destination buffer. The size of destination + buffer needed is obtained from GetInfo(). + Scratch - A temporary scratch buffer that is used to perform the + decompression. + ScratchSize - The size of scratch buffer. The size of scratch buffer needed + is obtained from GetInfo(). + +Returns: + + EFI_SUCCESS - Decompression completed successfully, and the uncompressed + buffer is returned in Destination. + EFI_INVALID_PARAMETER + - The source buffer specified by Source and SourceSize is + corrupted (not in a valid compressed format). + +--*/ + +typedef struct _EFI_TIANO_DECOMPRESS_PROTOCOL { + EFI_TIANO_DECOMPRESS_GET_INFO GetInfo; + EFI_TIANO_DECOMPRESS_DECOMPRESS Decompress; +} EFI_TIANO_DECOMPRESS_PROTOCOL; + +GUID_VARIABLE_DECLARATION(gEfiTianoDecompressProtocolGuid, EFI_TIANO_DECOMPRESS_PROTOCOL_GUID); +#endif |