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/*************************************************************************
RepairVirtualAudioFile.cpp - emulation of a repaired sane audio file
-------------------
begin : Sun May 12 2002
copyright : (C) 2002 by Thomas Eschenbacher
email : Thomas.Eschenbacher@gmx.de
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "config.h"
#include <QFile>
#include <QIODevice>
#include "RecoverySource.h"
#include "RepairVirtualAudioFile.h"
//***************************************************************************
Kwave::RepairVirtualAudioFile::RepairVirtualAudioFile(QIODevice &device,
QList<Kwave::RecoverySource *> *repair_list)
:Kwave::VirtualAudioFile(device), m_position(0),
m_repair_list(repair_list)
{
}
//***************************************************************************
Kwave::RepairVirtualAudioFile::~RepairVirtualAudioFile()
{
if (m_repair_list) {
while (!m_repair_list->isEmpty())
delete m_repair_list->takeLast();
delete m_repair_list;
}
}
//***************************************************************************
qint64 Kwave::RepairVirtualAudioFile::read(char *data, unsigned int nbytes)
{
Q_ASSERT(m_repair_list);
Q_ASSERT(data);
if (!m_repair_list) return 0;
if (!nbytes) return 0;
if (!data) return 0;
bzero(data, nbytes);
qint64 read_bytes = 0;
foreach (Kwave::RecoverySource *src, *m_repair_list) {
Q_ASSERT(src);
if (!src) continue;
qint64 len = src->read(m_position, data, nbytes);
Q_ASSERT(len <= nbytes);
nbytes -= len;
m_position += len;
data += len;
read_bytes += len;
if (!nbytes) break;
}
return read_bytes;
}
//***************************************************************************
qint64 Kwave::RepairVirtualAudioFile::length()
{
Q_ASSERT(m_repair_list);
if (!m_repair_list) return 0;
Kwave::RecoverySource *last = m_repair_list->last();
Q_ASSERT(last);
if (!last) return 0;
return static_cast<qint64>(last->offset() + last->length());
}
//***************************************************************************
qint64 Kwave::RepairVirtualAudioFile::write(const char *data,
unsigned int nbytes)
{
Q_UNUSED(data)
Q_UNUSED(nbytes)
qWarning("RepairVirtualAudioFile::write() is forbidden !");
return 0;
}
//***************************************************************************
qint64 Kwave::RepairVirtualAudioFile::seek(qint64 offset, bool is_relative)
{
if (is_relative)
m_position += offset;
else
m_position = offset;
return (m_position < length()) ? m_position : -1;
}
//***************************************************************************
qint64 Kwave::RepairVirtualAudioFile::tell()
{
return m_position;
}
//***************************************************************************
//***************************************************************************
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