149 lines
4.1 KiB
C++
149 lines
4.1 KiB
C++
/*
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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_stco:
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// The 'stco' QTAtom class.
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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 "QTFile.h"
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#include "QTAtom.h"
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#include "QTAtom_stco.h"
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#include "OSMemory.h"
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// -------------------------------------
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// Constants
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//
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const int stcoPos_VersionFlags = 0;
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const int stcoPos_NumEntries = 4;
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const int stcoPos_SampleTable = 8;
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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_stco::QTAtom_stco(QTFile * File, QTFile::AtomTOCEntry * TOCEntry, UInt16 offSetSize, Bool16 Debug, Bool16 DeepDebug)
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: QTAtom(File, TOCEntry, Debug, DeepDebug),
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fNumEntries(0),fOffSetSize(offSetSize), fChunkOffsetTable(NULL), fTable(NULL)
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{
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}
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QTAtom_stco::~QTAtom_stco(void)
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{
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//
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// Free our variables.
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if( fChunkOffsetTable != NULL )
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delete[] fChunkOffsetTable;
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}
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// -------------------------------------
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// Initialization functions
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//
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Bool16 QTAtom_stco::Initialize(void)
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{
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// Temporary vars
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UInt32 tempInt32;
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//
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// Parse this atom's fields.
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ReadInt32(stcoPos_VersionFlags, &tempInt32);
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fVersion = (UInt8)((tempInt32 >> 24) & 0x000000ff);
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fFlags = tempInt32 & 0x00ffffff;
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ReadInt32(stcoPos_NumEntries, &fNumEntries);
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//
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// Validate the size of the sample table.
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if( (UInt32)(fNumEntries * fOffSetSize) != (fTOCEntry.AtomDataLength - 8) )
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return false;
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//
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// Read in the chunk offset table.
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fChunkOffsetTable = NEW char[(fNumEntries * fOffSetSize) + 1];
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if( fChunkOffsetTable == NULL )
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return false;
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if( ((PointerSizedInt)fChunkOffsetTable & (PointerSizedInt)0x3) == 0)
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fTable = (void *)fChunkOffsetTable;
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else
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fTable = (void *)(((PointerSizedInt)fChunkOffsetTable + 4) & ~((PointerSizedInt)0x3));
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ReadBytes(stcoPos_SampleTable, (char *)fTable, fNumEntries * fOffSetSize);
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//
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// This atom has been successfully read in.
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return true;
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}
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// -------------------------------------
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// Debugging functions
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//
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void QTAtom_stco::DumpAtom(void)
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{
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DEBUG_PRINT(("QTAtom_stco::DumpAtom - Dumping atom.\n"));
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DEBUG_PRINT(("QTAtom_stco::DumpAtom - ..Number of chunk offset entries: %"_S32BITARG_"\n", fNumEntries));
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}
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void QTAtom_stco::DumpTable(void)
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{
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//
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// Print out a header.
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qtss_printf("-- Chunk Offset table ----------------------------------------------------------\n");
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qtss_printf("\n");
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qtss_printf(" Chunk Num. Offset\n");
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qtss_printf(" ---------- ----------\n");
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//
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// Print the table.
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UInt64 offset = 0;
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for( UInt32 CurEntry = 1; CurEntry <= fNumEntries; CurEntry++ )
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{
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if (ChunkOffset(CurEntry, &offset))
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qtss_printf(" %10"_U32BITARG_": %"_64BITARG_"u\n", CurEntry, offset);
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else
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qtss_printf(" %10"_U32BITARG_": QTAtom_stco::DumpTable ChunkOffset error\n", CurEntry);
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}
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}
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