/*
Decompresses a Lzma compressed source buffer.
Extracts decompressed data to its original form.
If the compressed source data specified by Source is successfully decompressed
into Destination, then RETURN_SUCCESS is returned. If the compressed source data
specified by Source is not a valid compressed data format,
then RETURN_INVALID_PARAMETER is returned.
@param Source The source buffer containing the compressed data.
@param SourceSize The size of source buffer.
@param Destination The destination buffer to store the decompressed data
@retval EFI_SUCCESS Decompression completed successfully, and
the uncompressed buffer is returned Destination.
@retval EFI_INVALID_PARAMETER
The source buffer specified by Source is corrupted
(not a valid compressed format).
*/
INT32
EFIAPI
LzmaDecompress(
CONST VOID *Source,
UINT32 SourceSize,
VOID *Destination
)
{
SRes LzmaResult;
ELzmaStatus Status;
SizeT DecodedBufSize;
SizeT EncodedDataSize;
DecodedBufSize = (SizeT)GetDecodedSizeOfBuf((UINT8*)Source);
EncodedDataSize = (SizeT)(SourceSize - LZMA_HEADER_SIZE);
LzmaResult = LzmaDecode(
(Byte*)Destination,
&DecodedBufSize,
(Byte*)((UINT8*)Source + LZMA_HEADER_SIZE),
&EncodedDataSize,
(CONST Byte*) Source,
LZMA_PROPS_SIZE,
LZMA_FINISH_END,
&Status,
&SzAllocForLzma
);
if (LzmaResult == SZ_OK) {
return ERR_SUCCESS;
}
else {
return ERR_INVALID_PARAMETER;
}
}
/*
Given a Lzma compressed source buffer, this function retrieves the size of
the uncompressed buffer and the size of the scratch buffer required
to decompress the compressed source buffer.
Retrieves the size of the uncompressed buffer and the temporary scratch buffer
required to decompress the buffer specified by Source and SourceSize.
The size of the uncompressed buffer is returned DestinationSize,
the size of the scratch buffer is returned ScratchSize, and RETURN_SUCCESS is returned.
This 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 LZMA_HEADER_SIZE beginning bytes of the source data and output it as DestinationSize.
And ScratchSize is specific to the decompression implementation.
If SourceSize is less than LZMA_HEADER_SIZE, then ASSERT().
@param Source The source buffer containing the compressed data.
@param SourceSize The size, bytes, of the source buffer.
@param DestinationSize A pointer to the size, bytes, of the uncompressed buffer
that will be generated when the compressed buffer specified
by Source and SourceSize is decompressed.
@retval EFI_SUCCESS The size of the uncompressed data was returned
DestinationSize and the size of the scratch
buffer was returned ScratchSize.
*/
INT32
EFIAPI
LzmaGetInfo(
CONST VOID *Source,
UINT32 SourceSize,
UINT32 *DestinationSize
)
{
UInt64 DecodedSize;
ASSERT(SourceSize >= LZMA_HEADER_SIZE);
DecodedSize = GetDecodedSizeOfBuf((UINT8*)Source);
*DestinationSize = (UINT32)DecodedSize;
return ERR_SUCCESS;
}
/*
Given a Lzma compressed source buffer, this function retrieves the size of
the uncompressed buffer and the size of the scratch buffer required
to decompress the compressed source buffer.
Retrieves the size of the uncompressed buffer and the temporary scratch buffer
required to decompress the buffer specified by Source and SourceSize.
The size of the uncompressed buffer is returned DestinationSize,
the size of the scratch buffer is returned ScratchSize, and RETURN_SUCCESS is returned.
This 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 LZMA_HEADER_SIZE beginning bytes of the source data and output it as DestinationSize.
And ScratchSize is specific to the decompression implementation.
If SourceSize is less than LZMA_HEADER_SIZE, then ASSERT().
@param Source The source buffer containing the compressed data.
@param SourceSize The size, bytes, of the source buffer.
@param DestinationSize A pointer to the size, bytes, of the uncompressed buffer
that will be generated when the compressed buffer specified
by Source and SourceSize is decompressed.
@retval EFI_SUCCESS The size of the uncompressed data was returned
DestinationSize and the size of the scratch
buffer was returned ScratchSize.
*/
EFI_STATUS
LzmaGetInfo (
IN VOID *Source,
IN UINT32 SourceSize,
OUT UINT32 *DestinationSize,
OUT UINT32 *ScratchSize
)
{
UInt64 DecodedSize;
ASSERT(SourceSize >= LZMA_HEADER_SIZE);
DecodedSize = GetDecodedSizeOfBuf((UINT8*)Source);
*DestinationSize = (UINT32)DecodedSize;
return EFI_SUCCESS;
}
/**
Given a Lzma compressed source buffer, this function retrieves the size of
the uncompressed buffer and the size of the scratch buffer required
to decompress the compressed source buffer.
Retrieves the size of the uncompressed buffer and the temporary scratch buffer
required to decompress the buffer specified by Source and SourceSize.
The size of the uncompressed buffer is returned in DestinationSize,
the size of the scratch buffer is returned in ScratchSize, and RETURN_SUCCESS is returned.
This 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 LZMA_HEADER_SIZE beginning bytes of the source data and output it as DestinationSize.
And ScratchSize is specific to the decompression implementation.
If SourceSize is less than LZMA_HEADER_SIZE, then ASSERT().
@param Source The source buffer containing the compressed data.
@param SourceSize The size, in bytes, of the 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 RETURN_SUCCESS The size of the uncompressed data was returned
in DestinationSize and the size of the scratch
buffer was returned in ScratchSize.
**/
RETURN_STATUS
EFIAPI
LzmaUefiDecompressGetInfo (
IN CONST VOID *Source,
IN UINT32 SourceSize,
OUT UINT32 *DestinationSize,
OUT UINT32 *ScratchSize
)
{
UInt64 DecodedSize;
ASSERT(SourceSize >= LZMA_HEADER_SIZE);
DecodedSize = GetDecodedSizeOfBuf((UINT8*)Source);
*DestinationSize = (UINT32)DecodedSize;
*ScratchSize = SCRATCH_BUFFER_REQUEST_SIZE;
return RETURN_SUCCESS;
}
/**
Decompresses a Lzma compressed source buffer.
Extracts decompressed data to its original form.
If the compressed source data specified by Source is successfully decompressed
into Destination, then RETURN_SUCCESS is returned. If the compressed source data
specified by Source is not in a valid compressed data format,
then RETURN_INVALID_PARAMETER is returned.
@param Source The source buffer containing the compressed data.
@param SourceSize The size of source buffer.
@param Destination The destination buffer to store the decompressed data
@param Scratch A temporary scratch buffer that is used to perform the decompression.
This is an optional parameter that may be NULL if the
required scratch buffer size is 0.
@retval RETURN_SUCCESS Decompression completed successfully, and
the uncompressed buffer is returned in Destination.
@retval RETURN_INVALID_PARAMETER
The source buffer specified by Source is corrupted
(not in a valid compressed format).
**/
RETURN_STATUS
EFIAPI
LzmaUefiDecompress (
IN CONST VOID *Source,
IN UINTN SourceSize,
IN OUT VOID *Destination,
IN OUT VOID *Scratch
)
{
SRes LzmaResult;
ELzmaStatus Status;
SizeT DecodedBufSize;
SizeT EncodedDataSize;
ISzAllocWithData AllocFuncs;
AllocFuncs.Functions.Alloc = SzAlloc;
AllocFuncs.Functions.Free = SzFree;
AllocFuncs.Buffer = Scratch;
AllocFuncs.BufferSize = SCRATCH_BUFFER_REQUEST_SIZE;
DecodedBufSize = (SizeT)GetDecodedSizeOfBuf((UINT8*)Source);
EncodedDataSize = (SizeT) (SourceSize - LZMA_HEADER_SIZE);
// PrintString ("DecodedBufSize = %x EncodedDataSize = %x\n", DecodedBufSize, EncodedDataSize);
LzmaResult = LzmaDecode(
Destination,
&DecodedBufSize,
(Byte*)((UINT8*)Source + LZMA_HEADER_SIZE),
&EncodedDataSize,
Source,
LZMA_PROPS_SIZE,
LZMA_FINISH_END,
&Status,
&(AllocFuncs.Functions)
);
// PrintString ("LzmaDecode OK\n");
if (LzmaResult == SZ_OK) {
return RETURN_SUCCESS;
} else {
return RETURN_INVALID_PARAMETER;
}
}
/*
Decompresses a Lzma compressed source buffer.
Extracts decompressed data to its original form.
If the compressed source data specified by Source is successfully decompressed
into Destination, then RETURN_SUCCESS is returned. If the compressed source data
specified by Source is not a valid compressed data format,
then RETURN_INVALID_PARAMETER is returned.
@param Source The source buffer containing the compressed data.
@param SourceSize The size of source buffer.
@param Destination The destination buffer to store the decompressed data
@retval EFI_SUCCESS Decompression completed successfully, and
the uncompressed buffer is returned Destination.
@retval EFI_INVALID_PARAMETER
The source buffer specified by Source is corrupted
(not a valid compressed format).
*/
EFI_STATUS
LzmaDecompress (
IN VOID *Source,
IN UINT32 SourceSize,
IN OUT VOID *Destination,
IN UINT32 DstSize,
IN OUT VOID *Scratch,
IN UINT32 ScratchSize
)
{
SRes LzmaResult;
ELzmaStatus Status;
SizeT DecodedBufSize;
SizeT EncodedDataSize;
DecodedBufSize = (SizeT)GetDecodedSizeOfBuf((UINT8*)Source);
EncodedDataSize = (SizeT) (SourceSize - LZMA_HEADER_SIZE);
LzmaResult = LzmaDecode(
Destination,
&DecodedBufSize,
(Byte*)((UINT8*)Source + LZMA_HEADER_SIZE),
&EncodedDataSize,
Source,
LZMA_PROPS_SIZE,
LZMA_FINISH_END,
&Status,
&SzAllocForLzma
);
if (LzmaResult == SZ_OK) {
return EFI_SUCCESS;
} else {
return EFI_INVALID_PARAMETER;
}
}
