MP3File.h

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#ifndef __EO_UTILS_MP3_FILE_H__
#define __EO_UTILS_MP3_FILE_H__
 
#include <cstdint>
 
#include <string>
#include <utility>
 
#include "SndFileBackedMetadataAudioFile.h"
#include "MP3FileInfo.h"
 
namespace EOUtils
{
        enum class Mp3BitrateMode : int
        {
                Constant = SF_BITRATE_MODE_CONSTANT,
                Average = SF_BITRATE_MODE_AVERAGE,
                Variable = SF_BITRATE_MODE_VARIABLE
        };
 
        class MP3File : public SndFileBackedMetadataAudioFile
        {
                public:
                        explicit MP3File(const std::string& pFilename);
 
                        explicit MP3File(const std::string& pFilename, const MP3FileInfo& pFileInfo);
 
                        explicit MP3File(const std::string& pFilename, AudioFileModes pFileMode);

                        explicit MP3File(const std::string& pFilename, Mp3BitrateMode pBitrateMode, std::uint32_t pNominalBitrateKbps);

                        explicit MP3File(const std::string& pFilename, double pVariableBitrateCompressionZeroBestOneWorst);
 
                        MP3File(const MP3File& pOther);
 
                        MP3File(MP3File&& pOther) noexcept;
 
                        ~MP3File() override;
 
                        AudioFileResultType open(AudioFileModes pOpenMode) override;
 
                        void setAudioFileInfo(const AudioFileInfo& pAudioFileInfo) override;
 
                        const MP3FileInfo& getFileInfo() const;
 
                        void setMp3WriteBitrateMode(Mp3BitrateMode pMode);
 
                        void setMp3WriteNominalBitrateKbps(std::uint32_t pBitrateKbps);

                        void setMp3WriteVariableBitrateCompression(double pZeroBestOneWorst);
 
                        void clearMp3WriteEncodingOverrides();
 
                protected:
                        bool readFormatMatches(int pSfFullFormat) const override;
 
                        int newFileSfFormatMask() const override;
 
                        const char* formatLabel() const override;
 
                        void configureSndfileEncoderForWrite(SNDFILE* pSnd) override;
 
                private:
                        MP3FileInfo mMp3Info;
                        bool mMp3CustomizeWriteEncoding = false;
                        Mp3BitrateMode mMp3WriteMode = Mp3BitrateMode::Constant;
                        std::uint32_t mMp3NominalBitrateKbps = 192;
                        double mMp3VariableCompression = 0.35;
        };
}
 
#endif