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Code: Alles auswählen

class QExifImageHeader
{
    Q_DISABLE_COPY(QExifImageHeader)
public:
    QExifImageHeader();
    explicit QExifImageHeader(const QString &fileName);
    explicit QExifImageHeader(QByteArray *exifData);
    ~QExifImageHeader();
    bool loadFromData(QByteArray *exifData);
   .... 
}

Code: Alles auswählen

QExifImageHeader::QExifImageHeader()
    : d( new QExifImageHeaderPrivate )
{
    d->byteOrder = QSysInfo::ByteOrder;
    d->size = -1;
}
/*!
    Constructs a new EXIF image data editor and reads the meta-data from a JPEG image with the given \a fileName.
    */
QExifImageHeader::QExifImageHeader(const QString &fileName)
    : d(new QExifImageHeaderPrivate)
{
    d->byteOrder = QSysInfo::ByteOrder;
    d->size = -1;
    loadFromJpeg(fileName);
}
/*!
    Constructs a new EXIF image data editor and reads the exif meta-data from a QByteArray.
    */
QExifImageHeader::QExifImageHeader(QByteArray *exifData){
    d->byteOrder = QSysInfo::ByteOrder;
    d->size = -1;
    loadFromData(exifData);
}

/*!
    Destroys an EXIF image data editor.
    */
QExifImageHeader::~QExifImageHeader()
{
    clear();
    delete d;
}

/*!
    Reads meta-data from a EXIF or META section of an JPEG image.
    Returns true if the data was successfully parsed and false otherwise.
    */
bool QExifImageHeader::loadFromData(QByteArray *exifData) {
    QBuffer buffer(exifData);
    readOk = buffer.open(QIODevice::ReadOnly) && read(&buffer);
    return readOk;
}

Code: Alles auswählen

    explicit QExifImageHeader(QByteArray *exifData);
    bool loadFromData(QByteArray *exifData);

Code: Alles auswählen

QByteArray data = "a.dfjkjbjknjgnbjnb"; // inhalt beliebig
QExifImageHeader *exifHeader = new    QExifImageHeader(&data); 

Code: Alles auswählen

QByteArray data = "gksgbkjjbkjnkajnbvk" // inhalt beliebig
QExifImageHeader exifHeader = new QExifImageHeader();
exifHeader->loadFromData(&data)

Code: Alles auswählen

QExifImageHeader::QExifImageHeader(QByteArray *exifData)
     : d(new QExifImageHeaderPrivate)
{
    d->byteOrder = QSysInfo::ByteOrder;
    d->size = -1;
    loadFromData(exifData);
}