WSJT-X/Audio/WavFile.hpp

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#ifndef WSV_FILE_HPP__
#define WSV_FILE_HPP__
#include <array>
#include <QFile>
#include <QAudioFormat>
#include <QMap>
#include <QByteArray>
class QObject;
class QString;
class WavFile final
: public QIODevice
{
Q_OBJECT
public:
using FileHandleFlags = QFile::FileHandleFlags;
using Permissions = QFile::Permissions;
using FileError = QFile::FileError;
using MemoryMapFlags = QFile::MemoryMapFlags;
using InfoDictionary = QMap<std::array<char, 4>, QByteArray>;
explicit WavFile (QAudioFormat const&, QObject * parent = nullptr);
explicit WavFile (QAudioFormat const&, QString const& name, QObject * parent = nullptr);
explicit WavFile (QAudioFormat const&, QString const& name, InfoDictionary const&, QObject * parent = nullptr);
~WavFile ();
QAudioFormat const& format () const {return format_;}
qint64 header_length () const {return header_length_;}
InfoDictionary const& info () const {return info_dictionary_;}
// Emulate QFile interface
bool open (OpenMode) override;
bool open (FILE *, OpenMode, FileHandleFlags = QFile::DontCloseHandle);
bool open (int fd, OpenMode, FileHandleFlags = QFile::DontCloseHandle);
bool copy (QString const& new_name);
// forward to QFile
bool exists () const {return file_.exists ();}
bool link (QString const& link_name) {return file_.link (link_name);}
bool remove () {return file_.remove ();}
bool rename (QString const& new_name) {return file_.rename (new_name);}
void setFileName (QString const& name) {file_.setFileName (name);}
QString symLinkTarget () const {return file_.symLinkTarget ();}
QString fileName () const {return file_.fileName ();}
Permissions permissions () const {return file_.permissions ();}
bool resize (qint64 new_size) {return file_.resize (new_size + header_length_);}
bool setPermissions (Permissions permissions) {return file_.setPermissions (permissions);}
FileError error () const {return file_.error ();}
bool flush () {return file_.flush ();}
int handle () const {return file_.handle ();}
uchar * map (qint64 offset, qint64 size, MemoryMapFlags flags = QFile::NoOptions)
{
return file_.map (offset, size, flags);
}
bool unmap (uchar * address) {return file_.unmap (address);}
void unsetError () {file_.unsetError ();}
// QIODevice overrides
bool isSequential () const override;
bool reset () override;
bool seek (qint64) override;
void close () override;
protected:
qint64 readData (char * data, qint64 max_size) override;
qint64 writeData (char const* data, qint64 max_size) override;
private:
bool initialize (OpenMode);
bool read_header ();
bool write_header (QAudioFormat);
bool update_header ();
bool header_dirty_;
QAudioFormat format_;
QFile file_;
qint64 header_length_;
InfoDictionary info_dictionary_;
};
#endif