packedvalues.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _PACKEDVALUES_H_
- #define _PACKEDVALUES_H_
- #define PROP_TYPE_ULONG32 0
- #define PROP_TYPE_CSTRING 1
- #define PROP_TYPE_BUFFER 2
- struct PackedValuesHeader {
- UINT8 fourCC[4]; //fourCC to identify the buffer
- UINT32 size; //size of the data
- void pack()
- {
- size = ((size&0xff)<<24) + (((size>>8)&0xff)<<16)
- + (((size>>16)&0xff)<<8) + ((size>>24)&0xff);
- }
- void unpack()
- {
- pack();
- }
- };
- /*
- packed buffer format: fourCC:size:num_items:<item1>:<item2>:....
- item format: type(8):name_len(8):name:data_len(16):data
- */
- class PackedValues {
- public:
- static UINT32 size(IHXValues* pValues);
- static HX_RESULT pack(UINT8* buf, UINT32 &len, IHXValues* pValues, UINT8 fourCC[4]);
- HX_RESULT unpack(UINT8* buf, UINT32 len, IHXValues* pValues, IHXCommonClassFactory* pCCF = NULL);
- UINT8 m_fourCC[4];
- private:
- static UINT32 packone(UINT8* buf, UINT8 type, UINT8 name_length, UINT8* name, UINT16 value_length, UINT8* value_data);
- };
- #endif