74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
#ifndef TAG_PARSER_ASPECTRATIO_H
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#define TAG_PARSER_ASPECTRATIO_H
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#include "./global.h"
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#include <c++utilities/conversion/stringbuilder.h>
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#include <cstdint>
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#include <string>
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namespace TagParser {
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struct TAG_PARSER_EXPORT AspectRatio {
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constexpr explicit AspectRatio();
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explicit AspectRatio(std::uint8_t aspectRatioType);
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constexpr explicit AspectRatio(std::uint16_t numerator, std::uint16_t denominator);
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constexpr bool isValid() const;
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constexpr bool isExtended() const;
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std::string toString() const;
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std::uint8_t type;
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std::uint16_t numerator;
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std::uint16_t denominator;
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};
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/*!
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* \brief Constructs an invalid aspect ratio.
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*/
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constexpr AspectRatio::AspectRatio()
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: type(0)
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, numerator(0)
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, denominator(0)
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{
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}
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/*!
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* \brief Constructs a aspect ratio with the specified \a numerator and \a denominator.
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* \remarks Allows defining a custom aspect ratio, hence counts as "extended" (see isExtended()).
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*/
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constexpr AspectRatio::AspectRatio(std::uint16_t numerator, std::uint16_t denominator)
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: type(0xFF)
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, numerator(numerator)
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, denominator(denominator)
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{
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}
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/*!
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* \brief Returns an indication whether the aspect ratio is present and valid.
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*/
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constexpr bool AspectRatio::isValid() const
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{
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return type && numerator && denominator;
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}
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/*!
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* \brief Returns whether numerator and denominator must be read from extended SAR header.
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*/
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constexpr bool AspectRatio::isExtended() const
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{
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return type == 0xFF;
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}
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/*!
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* \brief Returns the string representation "numerator : denominator".
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*/
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inline std::string AspectRatio::toString() const
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{
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return CppUtilities::argsToString(numerator, " : ", denominator);
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}
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} // namespace TagParser
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#endif // TAG_PARSER_ASPECTRATIO_H
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