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143 lines
3.3 KiB
143 lines
3.3 KiB
/***************************************************************************
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frequencyseekhelper.cpp - description
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-------------------
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begin : Fre Mai 9 2003
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copyright : (C) 2003 by Martin Witte
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email : witte@kawo1.rwth-aachen.de
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "include/frequencyseekhelper.h"
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#include <tqtimer.h>
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FrequencySeekHelper::FrequencySeekHelper(ISeekRadio &parent)
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: SeekHelper(parent)
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{
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m_timer = new TQTimer(this);
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TQObject::connect (m_timer, TQ_SIGNAL(timeout()), this, TQ_SLOT(step()));
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}
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FrequencySeekHelper::~FrequencySeekHelper()
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{
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delete m_timer;
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}
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bool FrequencySeekHelper::connectI (Interface *i)
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{
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bool a = SeekHelper::connectI(i);
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bool b = IFrequencyRadioClient::connectI(i);
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return a || b;
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}
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bool FrequencySeekHelper::disconnectI(Interface *i)
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{
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bool a = SeekHelper::disconnectI(i);
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bool b = IFrequencyRadioClient::disconnectI(i);
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return a || b;
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}
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void FrequencySeekHelper::start(const SoundStreamID &id, direction_t dir)
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{
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SeekHelper::start(id, dir);
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m_bestFrequency = 0;
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}
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void FrequencySeekHelper::abort()
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{
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m_timer->stop();
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m_bestFrequency = 0;
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}
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bool FrequencySeekHelper::nextSeekStep()
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{
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float f = queryFrequency();
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f += (m_direction == up ? 1 : -1) * queryScanStep();
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bool bounds = false;
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if (f > queryMaxFrequency()) {
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f = queryMaxFrequency();
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bounds = true;
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}
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if (f < queryMinFrequency()) {
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f = queryMinFrequency();
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bounds = true;
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}
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if (sendFrequency(f) > 0) {
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if (!bounds) {
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m_timer->start (50, true);
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return true;
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} else {
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return false;
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}
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} else {
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return false;
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}
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}
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bool FrequencySeekHelper::bestFound() const
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{
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return m_bestFrequency > 0;
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}
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void FrequencySeekHelper::rememberBest()
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{
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m_bestFrequency = m_currentFrequency;
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}
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void FrequencySeekHelper::getData()
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{
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m_oldSignal = m_currentSignal;
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m_oldFrequency = m_currentFrequency;
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querySignalQuality(m_SoundStreamID, m_currentSignal);
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queryHasGoodQuality(m_SoundStreamID, m_goodSignal);
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m_currentFrequency = queryFrequency();
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}
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bool FrequencySeekHelper::isBetter() const
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{
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return m_currentSignal > m_oldSignal;
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}
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bool FrequencySeekHelper::isWorse() const
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{
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return m_currentSignal < m_oldSignal;
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}
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bool FrequencySeekHelper::isGood() const
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{
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return m_goodSignal;
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}
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void FrequencySeekHelper::applyBest()
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{
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sendFrequency( (m_bestFrequency + m_currentFrequency) / 2);
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}
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#include "frequencyseekhelper.moc"
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