void COMFFileBuilder::PutNumeric(uint32 x) {
// Put word or dword into buffer, depending on type being even or odd
if (Type & 1) {
PutDword(x); // Type is odd, put 32 bits
}
else {
if (x > 0xffff) err.submit(2304);// Index out of range
PutWord(uint16(x)); // Type is even, put 16 bits
}
}
INT32
EfiCompress (
UINT8 *SrcBuffer,
UINT32 SrcSize,
UINT8 *DstBuffer,
UINT32 *DstSize
)
/*++
Routine Description:
The main compression routine.
Arguments:
SrcBuffer - The buffer storing the source data
SrcSize - The size of source data
DstBuffer - The buffer to store the compressed data
DstSize - On input, the size of DstBuffer; On output,
the size of the actual compressed data.
Returns:
EFI_BUFFER_TOO_SMALL - The DstBuffer is too small.this case,
DstSize contains the size needed.
EFI_SUCCESS - Compression is successful.
--*/
{
UINT32 Status = ERR_SUCCESS;
//
// Initializations
//
mBufSiz = 0;
mBuf = NULL;
mText = NULL;
mLevel = NULL;
mChildCount = NULL;
mPosition = NULL;
mParent = NULL;
mPrev = NULL;
mNext = NULL;
mSrc = SrcBuffer;
mSrcUpperLimit = mSrc + SrcSize;
mDst = DstBuffer;
mDstUpperLimit = mDst + *DstSize;
PutDword(0L);
PutDword(0L);
MakeCrcTable ();
mOrigSize = mCompSize = 0;
mCrc = INIT_CRC;
//
// Compress it
//
Status = Encode();
if (Status) {
return ERR_OUT_OF_RESOURCES;
}
//
// Null terminate the compressed data
//
if (mDst < mDstUpperLimit) {
*mDst++ = 0;
}
//
// Fill compressed size and original size
//
mDst = DstBuffer;
PutDword(mCompSize+1);
PutDword(mOrigSize);
//
// Return
//
if (mCompSize + 1 + 8 > *DstSize) {
*DstSize = mCompSize + 1 + 8;
return ERR_BUFFER_TOO_SMALL;
} else {
*DstSize = mCompSize + 1 + 8;
return ERR_SUCCESS;
}
}
