#include <RecoveryMapping.h>

Inheritance diagram for Kwave::RecoveryMapping:

Collaboration diagram for Kwave::RecoveryMapping:

Public Member Functions
	RecoveryMapping (quint64 offset, quint64 length, QIODevice &dev, quint64 dev_offset)

virtual	~RecoveryMapping () Q_DECL_OVERRIDE

virtual qint64	read (quint64 offset, char *data, unsigned int bytes) Q_DECL_OVERRIDE

Public Member Functions inherited from Kwave::RecoverySource
	RecoverySource (quint64 offset, quint64 length)

virtual	~RecoverySource ()

virtual quint64	offset () const

virtual quint64	length () const

virtual quint64	end () const

Private Attributes
QIODevice &	m_dev

quint64	m_dev_offset

Detailed Description

Definition at line 29 of file RecoveryMapping.h.

Constructor & Destructor Documentation

◆ RecoveryMapping()

Kwave::RecoveryMapping::RecoveryMapping	(	quint64	offset,
		quint64	length,
		QIODevice &	dev,
		quint64	dev_offset
	)

Constructor

Parameters

offset	position in the repaired file
length	number of recovered bytes
dev	damaged source/file
dev_offset	offset within dev

Definition at line 25 of file RecoveryMapping.cpp.

     :Kwave::RecoverySource(offset, length),
      m_dev(dev), m_dev_offset(dev_offset)
 {
 }

◆ ~RecoveryMapping()

virtual Kwave::RecoveryMapping::~RecoveryMapping ( )

inlinevirtual

Destructor

Definition at line 43 of file RecoveryMapping.h.

References read().

43 {}

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Member Function Documentation

◆ read()

qint64 Kwave::RecoveryMapping::read	(	quint64	offset,
		char *	data,
		unsigned int	bytes
	)

virtual

implementation of Recoverysource::read

Implements Kwave::RecoverySource.

Definition at line 35 of file RecoveryMapping.cpp.

References Kwave::RecoverySource::end(), Kwave::RecoverySource::length(), m_dev, m_dev_offset, and Kwave::RecoverySource::offset().

Referenced by ~RecoveryMapping().

 {
     if (offset < this->offset()) return 0;
     if (offset > end()) return 0;
 
     qint64 off = offset - this->offset();
     qint64 len = length() - off;
     if (bytes < len) len = bytes;
     if (!len) return 0;
 
     if (!m_dev.seek(m_dev_offset + off)) return 0;
     return m_dev.read(data, len);
 }

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Member Data Documentation

◆ m_dev

QIODevice& Kwave::RecoveryMapping::m_dev

private

source with the damaged file

Definition at line 52 of file RecoveryMapping.h.

Referenced by read().

◆ m_dev_offset

quint64 Kwave::RecoveryMapping::m_dev_offset

private

start offset in the damaged file

Definition at line 55 of file RecoveryMapping.h.