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/***************************************************************************
frequencyseekhelper.cpp - description
-------------------
begin : Fre Mai 9 2003
copyright : (C) 2003 by Martin Witte
email : witte@kawo1.rwth-aachen.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 "include/frequencyseekhelper.h"
#include <tqtimer.h>
FrequencySeekHelper::FrequencySeekHelper(ISeekRadio &parent)
: SeekHelper(parent)
{
m_timer = new TQTimer(this);
TQObject::connect (m_timer, TQ_SIGNAL(timeout()), this, TQ_SLOT(step()));
}
FrequencySeekHelper::~FrequencySeekHelper()
{
delete m_timer;
}
bool FrequencySeekHelper::connectI (Interface *i)
{
bool a = SeekHelper::connectI(i);
bool b = IFrequencyRadioClient::connectI(i);
return a || b;
}
bool FrequencySeekHelper::disconnectI(Interface *i)
{
bool a = SeekHelper::disconnectI(i);
bool b = IFrequencyRadioClient::disconnectI(i);
return a || b;
}
void FrequencySeekHelper::start(const SoundStreamID &id, direction_t dir)
{
SeekHelper::start(id, dir);
m_bestFrequency = 0;
}
void FrequencySeekHelper::abort()
{
m_timer->stop();
m_bestFrequency = 0;
}
bool FrequencySeekHelper::nextSeekStep()
{
float f = queryFrequency();
f += (m_direction == up ? 1 : -1) * queryScanStep();
bool bounds = false;
if (f > queryMaxFrequency()) {
f = queryMaxFrequency();
bounds = true;
}
if (f < queryMinFrequency()) {
f = queryMinFrequency();
bounds = true;
}
if (sendFrequency(f) > 0) {
if (!bounds) {
m_timer->start (50, true);
return true;
} else {
return false;
}
} else {
return false;
}
}
bool FrequencySeekHelper::bestFound() const
{
return m_bestFrequency > 0;
}
void FrequencySeekHelper::rememberBest()
{
m_bestFrequency = m_currentFrequency;
}
void FrequencySeekHelper::getData()
{
m_oldSignal = m_currentSignal;
m_oldFrequency = m_currentFrequency;
querySignalQuality(m_SoundStreamID, m_currentSignal);
queryHasGoodQuality(m_SoundStreamID, m_goodSignal);
m_currentFrequency = queryFrequency();
}
bool FrequencySeekHelper::isBetter() const
{
return m_currentSignal > m_oldSignal;
}
bool FrequencySeekHelper::isWorse() const
{
return m_currentSignal < m_oldSignal;
}
bool FrequencySeekHelper::isGood() const
{
return m_goodSignal;
}
void FrequencySeekHelper::applyBest()
{
sendFrequency( (m_bestFrequency + m_currentFrequency) / 2);
}
#include "frequencyseekhelper.moc"
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