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#ifndef __MPEG4_Handler_hpp__
#define __MPEG4_Handler_hpp__ 1
// =================================================================================================
// Copyright Adobe
// Copyright 2006 Adobe
// All Rights Reserved
//
// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance with the terms
// of the Adobe license agreement accompanying it.
// =================================================================================================
#include "XMPFiles/source/XMPFiles_Impl.hpp"
#include "XMPFiles/source/FormatSupport/MOOV_Support.hpp"
#include "XMPFiles/source/FormatSupport/QuickTime_Support.hpp"
#include "XMPFiles/source/FormatSupport/META_Support.hpp"
// ================================================================================================
/// \file MPEG4_Handler.hpp
/// \brief File format handler for MPEG-4.
///
/// This header ...
///
// ================================================================================================
extern XMPFileHandler * MPEG4_MetaHandlerCTor ( XMPFiles * parent );
extern bool MPEG4_CheckFormat ( XMP_FileFormat format,
XMP_StringPtr filePath,
XMP_IO* fileRef,
XMPFiles * parent );
static const XMP_OptionBits kMPEG4_HandlerFlags = ( kXMPFiles_CanInjectXMP |
kXMPFiles_CanExpand |
kXMPFiles_CanRewrite |
kXMPFiles_PrefersInPlace |
kXMPFiles_CanReconcile |
kXMPFiles_AllowsOnlyXMP |
kXMPFiles_ReturnsRawPacket |
kXMPFiles_AllowsSafeUpdate |
kXMPFiles_CanNotifyProgress
);
class MPEG4_MetaHandler : public XMPFileHandler
{
public:
void CacheFileData();
void ProcessXMP();
void UpdateFile ( bool doSafeUpdate );
void WriteTempFile ( XMP_IO* tempRef );
MPEG4_MetaHandler ( XMPFiles * _parent );
virtual ~MPEG4_MetaHandler();
struct TimecodeTrackInfo { // Info about a QuickTime timecode track.
bool stsdBoxFound, isDropFrame;
XMP_Uns32 timeScale;
XMP_Uns32 frameDuration;
XMP_Uns32 timecodeSample;
XMP_Uns64 sampleOffset; // Absolute file offset of the timecode sample, 0 if none.
XMP_Uns32 nameOffset; // The offset of the 'name' box relative to the 'stsd' box content.
XMP_Uns16 macLang; // The Mac language code of the trailing 'name' box.
std::string macName; // The text part of the trailing 'name' box, in macLang encoding.
TimecodeTrackInfo()
: stsdBoxFound(false), isDropFrame(false), timeScale(0), frameDuration(0),
timecodeSample(0), sampleOffset(0), nameOffset(0), macLang(0) {};
};
private:
MPEG4_MetaHandler() : fileMode(0), havePreferredXMP(false),
xmpBoxPos(0), moovBoxPos(0), xmpBoxSize(0), moovBoxSize(0)
{}; // Hidden on purpose.
bool ParseTimecodeTrack();
void UpdateTopLevelBox ( XMP_Uns64 oldOffset, XMP_Uns32 oldSize, const XMP_Uns8 * newBox, XMP_Uns32 newSize );
void OptimizeFileLayout();
XMP_Uns8 fileMode;
bool havePreferredXMP;
XMP_Uns64 xmpBoxPos; // The file offset of the XMP box (the size field, not the content).
XMP_Uns64 moovBoxPos; // The file offset of the 'moov' box (the size field, not the content).
XMP_Uns32 xmpBoxSize, moovBoxSize; // The full size of the boxes, not just the content.
MOOV_Manager moovMgr;
TradQT_Manager tradQTMgr;
TimecodeTrackInfo tmcdInfo;
}; // MPEG4_MetaHandler
// =================================================================================================
#endif // __MPEG4_Handler_hpp__
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