/*
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 *
 */
// $Id: QTAtom_mvhd.h,v 1.9 2003/08/15 23:53:14 sbasu Exp $
//
// QTAtom_mvhd:
//   The 'mvhd' QTAtom class.

#ifndef QTAtom_mvhd_H
#define QTAtom_mvhd_H


//
// Includes
#include "QTFile.h"
#include "QTAtom.h"


//
// QTAtom class
class QTAtom_mvhd : public QTAtom {

public:
    //
    // Constructors and destructor.
                        QTAtom_mvhd(QTFile * File, QTFile::AtomTOCEntry * Atom,
                               Bool16 Debug = false, Bool16 DeepDebug = false);
    virtual             ~QTAtom_mvhd(void);


    //
    // Initialization functions.
    virtual Bool16      Initialize(void);
    
    //
    // Accessors.
    inline  Float64     GetTimeScale(void) { return (Float64)fTimeScale; }
#if __Win32__

	// Win compiler can't convert UInt64 to Float64. It does support SInt64 to Float64 though.

	inline  Float64     GetDurationInSeconds(void) { if (fTimeScale != 0){return (Float64)((SInt64)fDuration) / (Float64) ((SInt64)fTimeScale); } else {return (Float64) 0.0;} }

#else

	inline  Float64     GetDurationInSeconds(void) { if (fTimeScale != 0){ return fDuration / (Float64)fTimeScale; } else {return (Float64) 0.0;} }
#endif

    //
    // Debugging functions.
    virtual void        DumpAtom(void);


protected:
    //
    // Protected member variables.
    UInt8       fVersion;
    UInt32      fFlags; // 24 bits in the low 3 bytes
    UInt64      fCreationTime, fModificationTime;
    UInt32      fTimeScale;
    UInt64      fDuration;
    UInt32      fPreferredRate;
    UInt16      fPreferredVolume;
    UInt32      fa, fb, fu, fc, fd, fv, fx, fy, fw;
    UInt32      fPreviewTime, fPreviewDuration, fPosterTime;
    UInt32      fSelectionTime, fSelectionDuration;
    UInt32      fCurrentTime;
    UInt32      fNextTrackID;
};

#endif // QTAtom_mvhd_H
