// ***************************************************************** -*- C++ -*-
/*
* Copyright (C) 2004-2018 Exiv2 authors
* This program is part of the Exiv2 distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
*/
/*!
@file quicktimevideo.hpp
@brief An Image subclass to support Quick Time video files
@author Abhinav Badola for GSoC 2012
<a href="mailto:mail.abu.to@gmail.com">mail.abu.to@gmail.com</a>
@date 28-Jun-12, AB: created
*/
#ifndef QUICKTIMEVIDEO_HPP
#define QUICKTIMEVIDEO_HPP
// *****************************************************************************
#include "exiv2lib_export.h"
// included header files
#include "exif.hpp"
#include "image.hpp"
// *****************************************************************************
// namespace extensions
namespace Exiv2 {
// *****************************************************************************
// class definitions
// Add qtime to the supported image formats
namespace ImageType {
const int qtime = 22; //!< Treating qtime as an image type>
}
/*!
@brief Class to access QuickTime video files.
*/
class EXIV2LIB_DEPRECATED_EXPORT QuickTimeVideo:public Image
{
public:
//! @name Creators
//@{
/*!
@brief Constructor for a QuickTime video. Since the constructor
can not return a result, callers should check the good() method
after object construction to determine success or failure.
@param io An auto-pointer that owns a BasicIo instance used for
reading and writing image metadata. \b Important: The constructor
takes ownership of the passed in BasicIo instance through the
auto-pointer. Callers should not continue to use the BasicIo
instance after it is passed to this method. Use the Image::io()
method to get a temporary reference.
*/
QuickTimeVideo(BasicIo::AutoPtr io);
//@}
//! @name Manipulators
//@{
void readMetadata();
void writeMetadata();
//@}
//! @name Accessors
//@{
std::string mimeType() const;
//@}
protected:
/*!
@brief Check for a valid tag and decode the block at the current IO
position. Calls tagDecoder() or skips to next tag, if required.
*/
void decodeBlock();
/*!
@brief Interpret tag information, and call the respective function
to save it in the respective XMP container. Decodes a Tag
Information and saves it in the respective XMP container, if
the block size is small.
@param buf Data buffer which cotains tag ID.
@param size Size of the data block used to store Tag Information.
*/
void tagDecoder(Exiv2::DataBuf & buf, unsigned long size);
private:
/*!
@brief Interpret file type of the video, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void fileTypeDecoder(unsigned long size);
/*!
@brief Interpret Media Header Tag, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void mediaHeaderDecoder(unsigned long size);
/*!
@brief Interpret Video Header Tag, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void videoHeaderDecoder(unsigned long size);
/*!
@brief Interpret Movie Header Tag, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void movieHeaderDecoder(unsigned long size);
/*!
@brief Interpret Track Header Tag, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void trackHeaderDecoder(unsigned long size);
/*!
@brief Interpret Handler Tag, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void handlerDecoder(unsigned long size);
/*!
@brief Interpret Tag which contain other sub-tags,
and save it in the respective XMP container.
*/
void multipleEntriesDecoder();
/*!
@brief Interpret Sample Description Tag, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void sampleDesc(unsigned long size);
/*!
@brief Interpret Image Description Tag, and save it
in the respective XMP container.
*/
void imageDescDecoder();
/*!
@brief Interpret User Data Tag, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void userDataDecoder(unsigned long size);
/*!
@brief Interpret Preview Tag, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void previewTagDecoder(unsigned long size);
/*!
@brief Interpret Meta Keys Tags, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void keysTagDecoder(unsigned long size);
/*!
@brief Interpret Track Aperture Tags, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void trackApertureTagDecoder(unsigned long size);
/*!
@brief Interpret Nikon Tag, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void NikonTagsDecoder(unsigned long size);
/*!
@brief Interpret Tags from Different Camera make, and save it
in the respective XMP container.
@param size Size of the data block used to store Tag Information.
*/
void CameraTagsDecoder(unsigned long size);
/*!
@brief Interpret Audio Description Tag, and save it
in the respective XMP container.
*/
void audioDescDecoder();
/*!
@brief Helps to calculate Frame Rate from timeToSample chunk,
and save it in the respective XMP container.
*/
void timeToSampleDecoder();
/*!
@brief Recognizes which stream is currently under processing,
and save its information in currentStream_ .
*/
void setMediaStream();
/*!
@brief Used to discard a tag along with its data. The Tag will
be skipped and not decoded.
@param size Size of the data block that is to skipped.
*/
void discard(unsigned long size);
/*!
@brief Calculates Aspect Ratio of a video, and stores it in the
respective XMP container.
*/
void aspectRatio();
private:
//! @name NOT Implemented
//@{
//! Copy constructor
QuickTimeVideo(const QuickTimeVideo& rhs);
//! Assignment operator
QuickTimeVideo& operator=(const QuickTimeVideo& rhs);
//@}
private:
//! Variable which stores Time Scale unit, used to calculate time.
uint64_t timeScale_;
//! Variable which stores current stream being processsed.
int currentStream_;
//! Variable to check the end of metadata traversing.
bool continueTraversing_;
//! Variable to store height and width of a video frame.
uint64_t height_, width_;
}; //QuickTimeVideo End
// *****************************************************************************
// template, inline and free functions
// These could be static private functions on Image subclasses but then
// ImageFactory needs to be made a friend.
/*!
@brief Create a new QuicktimeVideo instance and return an auto-pointer to it.
Caller owns the returned object and the auto-pointer ensures that
it will be deleted.
*/
EXIV2LIB_DEPRECATED_EXPORT Image::AutoPtr newQTimeInstance(BasicIo::AutoPtr io, bool create);
//! Check if the file iIo is a Quick Time Video.
EXIV2LIB_DEPRECATED_EXPORT bool isQTimeType(BasicIo& iIo, bool advance);
} // namespace Exiv2
#endif // QUICKTIMEVIDEO_HPP