Add even more of the source
This should be about everything needed to build so far?
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269
QTFileLib/QTAtom.cpp
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269
QTFileLib/QTAtom.cpp
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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:
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// The base-class for atoms in a QuickTime file.
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// -------------------------------------
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// Includes
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//
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#include <stdio.h>
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#include <stdlib.h>
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#include "SafeStdLib.h"
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#include <string.h>
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#ifndef __Win32__
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#include <sys/types.h>
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#include <netinet/in.h>
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#endif
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#include "QTFile.h"
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#include "QTAtom.h"
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// -------------------------------------
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// Macros
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//
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#define DEBUG_PRINT(s) if(fDebug) qtss_printf s
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#define DEEP_DEBUG_PRINT(s) if(fDeepDebug) qtss_printf s
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// -------------------------------------
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// Constructors and destructors
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//
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QTAtom::QTAtom(QTFile * File, QTFile::AtomTOCEntry * Atom, Bool16 Debug, Bool16 DeepDebug)
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: fDebug(Debug), fDeepDebug(DeepDebug),
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fFile(File)
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{
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//
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// Make a copy of the TOC entry.
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memcpy(&fTOCEntry, Atom, sizeof(QTFile::AtomTOCEntry));
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}
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QTAtom::~QTAtom(void)
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{
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}
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// -------------------------------------
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// Read functions
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//
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Bool16 QTAtom::ReadBytes(UInt64 Offset, char * Buffer, UInt32 Length)
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{
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//
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// Validate the arguments.
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if( (Offset + Length) > fTOCEntry.AtomDataLength )
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return false;
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//
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// Read and return this data.
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return fFile->Read(fTOCEntry.AtomDataPos + Offset, Buffer, Length);
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}
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char *QTAtom::MemMap(UInt64 Offset, UInt32 Length)
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{
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//
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// Validate the arguments.
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if( (Offset + Length) > fTOCEntry.AtomDataLength )
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return NULL;
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//
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// Read and return this data.
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return fFile->MapFileToMem(fTOCEntry.AtomDataPos + Offset, Length);
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}
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Bool16 QTAtom::UnMap(char *memPtr, UInt32 Length)
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{
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if (-1 == fFile->UnmapMem(memPtr, Length))
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return false;
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return true;
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}
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Bool16 QTAtom::ReadInt8(UInt64 Offset, UInt8 * Datum)
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{
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//
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// Read and return.
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return ReadBytes(Offset, (char *)Datum, 1);
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}
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Bool16 QTAtom::ReadInt16(UInt64 Offset, UInt16 * Datum)
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{
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// General vars
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UInt16 tempDatum;
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//
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// Read and flip.
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if( !ReadBytes(Offset, (char *)&tempDatum, 2) )
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return false;
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*Datum = ntohs(tempDatum);
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return true;
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}
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Bool16 QTAtom::ReadInt32(UInt64 Offset, UInt32 * Datum)
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{
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// General vars
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UInt32 tempDatum;
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//
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// Read and flip.
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if( !ReadBytes(Offset, (char *)&tempDatum, 4) )
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return false;
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*Datum = ntohl(tempDatum);
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return true;
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}
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Bool16 QTAtom::ReadInt32To64(UInt64 Offset, UInt64 * Datum)
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{
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// General vars
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UInt32 tempDatum;
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//
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// Read and flip.
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if( !ReadBytes(Offset, (char *)&tempDatum, 4) )
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return false;
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tempDatum = ntohl(tempDatum);
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*Datum = (UInt64) tempDatum;
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return true;
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}
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Bool16 QTAtom::ReadInt32To64Signed(UInt64 Offset, SInt64 * Datum)
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{
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// General vars
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UInt32 tempDatum;
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//
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// Read and flip.
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if( !ReadBytes(Offset, (char *)&tempDatum, 4) )
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return false;
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tempDatum = ntohl(tempDatum);
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*Datum = (SInt64) (SInt32) tempDatum;
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return true;
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}
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Bool16 QTAtom::ReadInt64(UInt64 Offset, UInt64 * Datum)
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{
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// General vars
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UInt64 tempDatum;
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//
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// Read and flip.
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if( !ReadBytes(Offset, (char *)&tempDatum, 8) )
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return false;
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*Datum = (UInt64) QTAtom::NTOH64(tempDatum);
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return true;
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}
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Bool16 QTAtom::ReadSubAtomBytes(const char * AtomPath, char * Buffer, UInt32 Length)
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{
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// General vars
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QTFile::AtomTOCEntry *atomTOCEntry;
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//
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// Find the TOC entry for this sub-atom.
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if( !fFile->FindTOCEntry(AtomPath, &atomTOCEntry, &fTOCEntry) )
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return false;
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//
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// Validate the arguments.
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if( (atomTOCEntry->AtomDataPos <= fTOCEntry.AtomDataPos) || ((atomTOCEntry->AtomDataPos + Length) > (fTOCEntry.AtomDataPos + fTOCEntry.AtomDataLength)) )
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return false;
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//
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// Read and return this data.
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return fFile->Read(atomTOCEntry->AtomDataPos, Buffer, Length);
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}
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Bool16 QTAtom::ReadSubAtomInt8(const char * AtomPath, UInt8 * Datum)
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{
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//
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// Read and return.
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return ReadSubAtomBytes(AtomPath, (char *)Datum, 1);
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}
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Bool16 QTAtom::ReadSubAtomInt16(const char * AtomPath, UInt16 * Datum)
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{
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// General vars
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UInt16 tempDatum;
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//
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// Read and flip.
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if( !ReadSubAtomBytes(AtomPath, (char *)&tempDatum, 2) )
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return false;
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*Datum = ntohs(tempDatum);
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return true;
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}
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Bool16 QTAtom::ReadSubAtomInt32(const char * AtomPath, UInt32 * Datum)
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{
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// General vars
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UInt32 tempDatum;
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//
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// Read and flip.
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if( !ReadSubAtomBytes(AtomPath, (char *)&tempDatum, 4) )
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return false;
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*Datum = ntohl(tempDatum);
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return true;
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}
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Bool16 QTAtom::ReadSubAtomInt64(const char * AtomPath, UInt64 * Datum)
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{
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// General vars
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UInt64 tempDatum;
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//
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// Read and flip.
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if( !ReadSubAtomBytes(AtomPath, (char *)&tempDatum, 8) )
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return false;
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*Datum = (UInt64) QTAtom::NTOH64(tempDatum);
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return true;
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}
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