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KwaveStreamObject.cpp    80 lines (64 with data), 3.1 kB

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/*************************************************************************
KwaveStreamObject.cpp - base class with a generic sample source/sink
-------------------
begin : Thu Nov 10 2007
copyright : (C) 2007 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 <QString>
#include <QVariant>
#include "libkwave/modules/KwaveStreamObject.h"
/** interactive mode */
bool Kwave::StreamObject::m_interactive = false;
//***************************************************************************
Kwave::StreamObject::StreamObject(QObject *parent)
:QObject(0 /*parent*/), m_lock_set_attribute(QMutex::Recursive)
{
Q_UNUSED(parent);
}
//***************************************************************************
Kwave::StreamObject::~StreamObject()
{
}
//***************************************************************************
void Kwave::StreamObject::setAttribute(const QString &attribute,
const QVariant &value)
{
QMutexLocker lock(&m_lock_set_attribute);
for (unsigned int track = 0; track < tracks(); track++) {
Kwave::StreamObject *obj = (*this)[track];
if (!obj) continue;
// temporary establish a signal->slot connection
QObject::connect(this, SIGNAL(attributeChanged(const QVariant)),
obj, attribute.toAscii(),
Qt::DirectConnection);
// emit the new value through our own signal
emit attributeChanged(value);
// remove the temporary signal->slot connection
QObject::disconnect(this, SIGNAL(attributeChanged(const QVariant)),
obj, attribute.toAscii());
}
}
//***************************************************************************
unsigned int Kwave::StreamObject::blockSize() const
{
return (m_interactive) ? 8*1024 : 512*1024;
}
//***************************************************************************
void Kwave::StreamObject::setInteractive(bool interactive)
{
m_interactive = interactive;
}
//***************************************************************************
#include "KwaveStreamObject.moc"
//***************************************************************************
//***************************************************************************