Qt Reference Documentation

wavfile.h Example File

demos/spectrum/app/wavfile.h
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 #ifndef WAVFILE_H
 #define WAVFILE_H

 #include <QtCore/qobject.h>
 #include <QtCore/qfile.h>
 #include <QtMultimedia/qaudioformat.h>

 /**
  * Helper class for reading WAV files
  *
  * See https://ccrma.stanford.edu/courses/422/projects/WaveFormat/
  */
 class WavFile
 {
 public:
     WavFile(const QAudioFormat &format = QAudioFormat(),
               qint64 dataLength = 0);

     // Reads WAV header and seeks to start of data
     bool readHeader(QIODevice &device);

     // Writes WAV header
     bool writeHeader(QIODevice &device);

     // Read PCM data
     qint64 readData(QIODevice &device, QByteArray &buffer,
                     QAudioFormat outputFormat = QAudioFormat());

     const QAudioFormat& format() const;
     qint64 dataLength() const;

     static qint64 headerLength();

     static bool writeDataLength(QIODevice &device, qint64 dataLength);

 private:
     QAudioFormat m_format;
     qint64 m_dataLength;
 };

 #endif
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