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common/compiledcaptionswap.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Swap a compiled caption file.
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "utlbuffer.h"
+#include "byteswap.h"
+#include "filesystem.h"
+#include "tier2/fileutils.h"
+#include "captioncompiler.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+BEGIN_BYTESWAP_DATADESC( CompiledCaptionHeader_t )
+	DEFINE_FIELD( magic, FIELD_INTEGER ),
+	DEFINE_FIELD( version, FIELD_INTEGER ),
+	DEFINE_FIELD( numblocks, FIELD_INTEGER ),
+	DEFINE_FIELD( blocksize, FIELD_INTEGER ),
+	DEFINE_FIELD( directorysize, FIELD_INTEGER ),
+	DEFINE_FIELD( dataoffset, FIELD_INTEGER ),
+END_BYTESWAP_DATADESC()
+
+BEGIN_BYTESWAP_DATADESC( CaptionLookup_t )
+	DEFINE_FIELD( hash, FIELD_INTEGER ),
+	DEFINE_FIELD( blockNum, FIELD_INTEGER ),
+	DEFINE_FIELD( offset, FIELD_SHORT ),
+	DEFINE_FIELD( length, FIELD_SHORT ),
+END_BYTESWAP_DATADESC()
+
+//-----------------------------------------------------------------------------
+// Swap a compiled closecaption file 
+//-----------------------------------------------------------------------------
+bool SwapClosecaptionFile( void *pData )
+{
+	CByteswap swap;
+	swap.ActivateByteSwapping( true );
+
+	CompiledCaptionHeader_t *pHdr = (CompiledCaptionHeader_t*)pData;
+
+	if ( IsX360() )
+	{
+		// pre-swap file header
+		swap.SwapFieldsToTargetEndian( pHdr );
+	}
+
+	if ( pHdr->magic != COMPILED_CAPTION_FILEID || pHdr->version != COMPILED_CAPTION_VERSION )
+	{
+		// bad data
+		return false;
+	}
+
+	// lookup headers
+	pData = (byte*)pData + sizeof(CompiledCaptionHeader_t);
+	swap.SwapFieldsToTargetEndian( (CaptionLookup_t*)pData, pHdr->directorysize );
+
+	// unicode data
+	pData = (byte*)pHdr + pHdr->dataoffset;
+	swap.SwapBufferToTargetEndian( (wchar_t*)pData, (wchar_t*)pData, pHdr->numblocks * pHdr->blocksize / sizeof(wchar_t) );
+
+	if ( IsPC() )
+	{
+		// post-swap file header
+		swap.SwapFieldsToTargetEndian( pHdr );
+	}
+
+	return true;
+}
+
+#if defined( CLIENT_DLL )
+//-----------------------------------------------------------------------------
+// Callback for UpdateOrCreate - generates .360 file
+//-----------------------------------------------------------------------------
+static bool CaptionCreateCallback( const char *pSourceName, const char *pTargetName, const char *pPathID, void *pExtraData )
+{
+	// Generate the file
+	CUtlBuffer buf;
+	bool bOk = g_pFullFileSystem->ReadFile( pSourceName, pPathID, buf );
+	if ( bOk )
+	{
+		bOk = SwapClosecaptionFile( buf.Base() );
+		if ( bOk )
+		{
+			bOk = g_pFullFileSystem->WriteFile( pTargetName, pPathID, buf );
+		}
+		else
+		{
+			Warning( "Failed to create %s\n", pTargetName );
+		}
+	}
+	return bOk;
+}
+
+//-----------------------------------------------------------------------------
+// Calls utility function UpdateOrCreate
+//-----------------------------------------------------------------------------
+int UpdateOrCreateCaptionFile( const char *pSourceName, char *pTargetName, int maxLen, bool bForce )
+{
+	return ::UpdateOrCreate( pSourceName, pTargetName, maxLen, "GAME", CaptionCreateCallback, bForce );
+}
+#endif