93 lines
2.0 KiB
C++
93 lines
2.0 KiB
C++
#ifndef MP4ATOM_H
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#define MP4ATOM_H
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#include "./mp4ids.h"
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#include "../genericfileelement.h"
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#include <c++utilities/conversion/types.h>
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#include <c++utilities/conversion/stringconversion.h>
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#include <list>
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#include <iostream>
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#include <memory>
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namespace Media
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{
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class Mp4Atom;
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class Mp4Container;
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/*!
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* \brief Defines traits for the GenericFileElement implementation Mp4Atom.
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*/
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template <>
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class LIB_EXPORT FileElementTraits<Mp4Atom>
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{
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public:
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/*!
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* \brief The container type used to store such elements is Mp4Container.
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*/
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typedef Mp4Container containerType;
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/*!
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* \brief The type used to store atom IDs is an unsigned 32-bit integer.
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*/
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typedef uint32 identifierType;
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/*!
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* \brief The type used to store element sizes is an unsigned 64-bit integer.
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*/
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typedef uint64 dataSizeType;
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/*!
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* \brief The implementation type is Mp4Atom.
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*/
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typedef Mp4Atom implementationType;
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/*!
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* \brief Returns the minimal atom size which is 8 byte.
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*/
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static constexpr byte minimumElementSize()
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{
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return 8;
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}
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};
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class LIB_EXPORT Mp4Atom : public GenericFileElement<Mp4Atom>
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{
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friend class GenericFileElement<Mp4Atom>;
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public:
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Mp4Atom(containerType& container, uint64 startOffset);
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std::string idToString() const;
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bool isParent() const;
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bool isPadding() const;
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uint64 firstChildOffset() const;
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static void seekBackAndWriteAtomSize(std::ostream &stream, const std::ostream::pos_type &startOffset);
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static void seekBackAndWriteAtomSize64(std::ostream &stream, const std::ostream::pos_type &startOffset);
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protected:
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Mp4Atom(containerType& container, uint64 startOffset, uint64 maxSize);
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Mp4Atom(implementationType &parent, uint64 startOffset);
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void internalParse();
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private:
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std::string parsingContext() const;
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};
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/*!
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* \brief Converts the specified atom \a ID to a printable string.
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*/
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inline std::string Mp4Atom::idToString() const
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{
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return ConversionUtilities::interpretIntegerAsString<identifierType>(id());
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}
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}
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#endif // MP4ATOM_H
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