114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
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/*
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* Copyright (c) 1999-2008 Apple Inc. All Rights Reserved.
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*
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*/
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//
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// QTAtom_dref:
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// The 'dref' QTAtom class.
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#ifndef QTAtom_dref_H
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#define QTAtom_dref_H
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//
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// Includes
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#include "QTFile.h"
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#include "QTAtom.h"
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//
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// External classes
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class QTFile_FileControlBlock;
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//
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// QTAtom class
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class QTAtom_dref : public QTAtom {
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//
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// Class constants
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enum {
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flagSelfRef = 0x00000001
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};
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//
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// Class typedefs.
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struct DataRefEntry {
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// Data ref information
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UInt32 Flags;
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OSType ReferenceType;
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UInt32 DataLength;
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char *Data;
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// Tracking information
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Bool16 IsEntryInitialized, IsFileOpen;
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QTFile_FileControlBlock *FCB;
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};
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public:
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//
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// Constructors and destructor.
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QTAtom_dref(QTFile * File, QTFile::AtomTOCEntry * Atom,
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Bool16 Debug = false, Bool16 DeepDebug = false);
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virtual ~QTAtom_dref(void);
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//
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// Initialization functions.
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virtual Bool16 Initialize(void);
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//
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// Accessors.
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Bool16 IsRefInThisFile(UInt32 RefID) { if(RefID && (RefID<=fNumRefs)) \
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return ((fRefs[RefID-1].Flags & flagSelfRef) != 0); \
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return false; }
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//
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// Read functions.
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Bool16 Read(UInt32 RefID, UInt64 Offset, char * const Buffer, UInt32 Length,
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QTFile_FileControlBlock * FCB = NULL);
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//
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// Debugging functions.
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virtual void DumpAtom(void);
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protected:
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//
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// Protected member functions.
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char * ResolveAlias(char * const AliasData, UInt32 AliasDataLength);
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//
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// Protected member variables.
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UInt8 fVersion;
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UInt32 fFlags; // 24 bits in the low 3 bytes
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UInt32 fNumRefs;
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DataRefEntry *fRefs;
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};
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#endif // QTAtom_dref_H
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