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| author | Joe Ludwig <[email protected]> | 2013-06-26 15:22:04 -0700 |
|---|---|---|
| committer | Joe Ludwig <[email protected]> | 2013-06-26 15:22:04 -0700 |
| commit | 39ed87570bdb2f86969d4be821c94b722dc71179 (patch) | |
| tree | abc53757f75f40c80278e87650ea92808274aa59 /mp/src/tier1/byteswap.cpp | |
| download | source-sdk-2013-39ed87570bdb2f86969d4be821c94b722dc71179.tar.xz source-sdk-2013-39ed87570bdb2f86969d4be821c94b722dc71179.zip | |
First version of the SOurce SDK 2013
Diffstat (limited to 'mp/src/tier1/byteswap.cpp')
| -rw-r--r-- | mp/src/tier1/byteswap.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/mp/src/tier1/byteswap.cpp b/mp/src/tier1/byteswap.cpp new file mode 100644 index 00000000..ec6b996e --- /dev/null +++ b/mp/src/tier1/byteswap.cpp @@ -0,0 +1,90 @@ +//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Low level byte swapping routines.
+//
+// $NoKeywords: $
+//=============================================================================
+
+#include "byteswap.h"
+
+//-----------------------------------------------------------------------------
+// Copy a single field from the input buffer to the output buffer, swapping the bytes if necessary
+//-----------------------------------------------------------------------------
+void CByteswap::SwapFieldToTargetEndian( void* pOutputBuffer, void *pData, typedescription_t *pField )
+{
+ switch ( pField->fieldType )
+ {
+ case FIELD_CHARACTER:
+ SwapBufferToTargetEndian<char>( (char*)pOutputBuffer, (char*)pData, pField->fieldSize );
+ break;
+
+ case FIELD_BOOLEAN:
+ SwapBufferToTargetEndian<bool>( (bool*)pOutputBuffer, (bool*)pData, pField->fieldSize );
+ break;
+
+ case FIELD_SHORT:
+ SwapBufferToTargetEndian<short>( (short*)pOutputBuffer, (short*)pData, pField->fieldSize );
+ break;
+
+ case FIELD_FLOAT:
+ SwapBufferToTargetEndian<uint>( (uint*)pOutputBuffer, (uint*)pData, pField->fieldSize );
+ break;
+
+ case FIELD_INTEGER:
+ SwapBufferToTargetEndian<int>( (int*)pOutputBuffer, (int*)pData, pField->fieldSize );
+ break;
+
+ case FIELD_VECTOR:
+ SwapBufferToTargetEndian<uint>( (uint*)pOutputBuffer, (uint*)pData, pField->fieldSize * 3 );
+ break;
+
+ case FIELD_VECTOR2D:
+ SwapBufferToTargetEndian<uint>( (uint*)pOutputBuffer, (uint*)pData, pField->fieldSize * 2 );
+ break;
+
+ case FIELD_QUATERNION:
+ SwapBufferToTargetEndian<uint>( (uint*)pOutputBuffer, (uint*)pData, pField->fieldSize * 4 );
+ break;
+
+ case FIELD_EMBEDDED:
+ {
+ typedescription_t *pEmbed = pField->td->dataDesc;
+ for ( int i = 0; i < pField->fieldSize; ++i )
+ {
+ SwapFieldsToTargetEndian( (byte*)pOutputBuffer + pEmbed->fieldOffset[ TD_OFFSET_NORMAL ],
+ (byte*)pData + pEmbed->fieldOffset[ TD_OFFSET_NORMAL ],
+ pField->td );
+
+ pOutputBuffer = (byte*)pOutputBuffer + pField->fieldSizeInBytes;
+ pData = (byte*)pData + pField->fieldSizeInBytes;
+ }
+ }
+ break;
+
+ default:
+ assert(0);
+ }
+}
+
+//-----------------------------------------------------------------------------
+// Write a block of fields. Works a bit like the saverestore code.
+//-----------------------------------------------------------------------------
+void CByteswap::SwapFieldsToTargetEndian( void *pOutputBuffer, void *pBaseData, datamap_t *pDataMap )
+{
+ // deal with base class first
+ if ( pDataMap->baseMap )
+ {
+ SwapFieldsToTargetEndian( pOutputBuffer, pBaseData, pDataMap->baseMap );
+ }
+
+ typedescription_t *pFields = pDataMap->dataDesc;
+ int fieldCount = pDataMap->dataNumFields;
+ for ( int i = 0; i < fieldCount; ++i )
+ {
+ typedescription_t *pField = &pFields[i];
+ SwapFieldToTargetEndian( (BYTE*)pOutputBuffer + pField->fieldOffset[ TD_OFFSET_NORMAL ],
+ (BYTE*)pBaseData + pField->fieldOffset[ TD_OFFSET_NORMAL ],
+ pField );
+ }
+}
+
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