diff options
Diffstat (limited to 'src/plugins/fakeradio/fakeradiotunercontrol.cpp')
| -rw-r--r-- | src/plugins/fakeradio/fakeradiotunercontrol.cpp | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/src/plugins/fakeradio/fakeradiotunercontrol.cpp b/src/plugins/fakeradio/fakeradiotunercontrol.cpp new file mode 100644 index 000000000..4686692af --- /dev/null +++ b/src/plugins/fakeradio/fakeradiotunercontrol.cpp @@ -0,0 +1,335 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "fakeradiotunercontrol.h" +#include "fakeradioservice.h" + +#include <QtCore/qdebug.h> + +FakeRadioTunerControl::FakeRadioTunerControl(QObject *parent) + :QRadioTunerControl(parent) +{ + m_state = QRadioTuner::StoppedState; + m_freqMin = 520000; + m_freqMax = 108000000; + m_currentBand = QRadioTuner::FM; + m_currentFreq = 0; + m_stereo = true; + m_stereoMode = QRadioTuner::Auto; + m_signalStrength = 0; + m_volume = 50; + m_muted = false; + + m_searching = false; + m_forward = true; + m_searchTimer = new QTimer(this); + m_searchTimer->setSingleShot(true); + connect(m_searchTimer, SIGNAL(timeout()), this, SLOT(searchEnded())); + + QTimer::singleShot(300, this, SLOT(delayedInit())); + + qsrand(QTime::currentTime().msec()); +} + +FakeRadioTunerControl::~FakeRadioTunerControl() +{ + m_searchTimer->stop(); +} + +bool FakeRadioTunerControl::isAvailable() const +{ + return true; +} + +QtMultimediaKit::AvailabilityError FakeRadioTunerControl::availabilityError() const +{ + return QtMultimediaKit::NoError; +} + +QRadioTuner::State FakeRadioTunerControl::state() const +{ + return m_state; +} + +QRadioTuner::Band FakeRadioTunerControl::band() const +{ + return m_currentBand; +} + +bool FakeRadioTunerControl::isBandSupported(QRadioTuner::Band b) const +{ + switch (b) { + case QRadioTuner::FM: + if (m_freqMin <= 87500000 && m_freqMax >= 108000000) + return true; + break; + case QRadioTuner::LW: + if (m_freqMin <= 148500 && m_freqMax >= 283500) + return true; + case QRadioTuner::AM: + if (m_freqMin <= 520000 && m_freqMax >= 1610000) + return true; + default: + if (m_freqMin <= 1711000 && m_freqMax >= 30000000) + return true; + } + + return false; +} + +void FakeRadioTunerControl::setBand(QRadioTuner::Band b) +{ + if (isBandSupported(b)) { + m_currentBand = b; + emit bandChanged(m_currentBand); + + int f = m_currentFreq; + QPair<int, int> fRange = frequencyRange(m_currentBand); + + if (f < fRange.first) + f = fRange.first; + if (f > fRange.second) + f = fRange.second; + + if (f != m_currentFreq) { + m_currentFreq = f; + emit frequencyChanged(m_currentFreq); + } + } +} + +int FakeRadioTunerControl::frequency() const +{ + return m_currentFreq; +} + +int FakeRadioTunerControl::frequencyStep(QRadioTuner::Band b) const +{ + int step = 0; + + if (b == QRadioTuner::FM) + step = 100000; // 100kHz steps + else if (b == QRadioTuner::LW) + step = 1000; // 1kHz steps + else if (b == QRadioTuner::AM) + step = 1000; // 1kHz steps + else if (b == QRadioTuner::SW) + step = 500; // 500Hz steps + + return step; +} + +QPair<int,int> FakeRadioTunerControl::frequencyRange(QRadioTuner::Band b) const +{ + if (b == QRadioTuner::FM) + return qMakePair<int,int>(87500000,108000000); + else if (b == QRadioTuner::LW) + return qMakePair<int,int>(148500,283500); + else if (b == QRadioTuner::AM) + return qMakePair<int,int>(520000,1710000); + else if (b == QRadioTuner::SW) + return qMakePair<int,int>(1711111,30000000); + + return qMakePair<int,int>(0,0); +} + +void FakeRadioTunerControl::setFrequency(int frequency) +{ + qint64 f = frequency; + QPair<int, int> fRange = frequencyRange(m_currentBand); + + if (frequency < fRange.first) + f = fRange.first; + if (frequency > fRange.second) + f = fRange.second; + + m_currentFreq = f; + emit frequencyChanged(m_currentFreq); +} + +bool FakeRadioTunerControl::isStereo() const +{ + return m_stereo; +} + +QRadioTuner::StereoMode FakeRadioTunerControl::stereoMode() const +{ + return m_stereoMode; +} + +void FakeRadioTunerControl::setStereoMode(QRadioTuner::StereoMode mode) +{ + bool stereo = true; + + if (mode == QRadioTuner::ForceMono) + stereo = false; + else + stereo = true; + + m_stereo = stereo; + m_stereoMode = mode; + + emit stereoStatusChanged(stereo); +} + +int FakeRadioTunerControl::signalStrength() const +{ + return m_signalStrength; +} + +int FakeRadioTunerControl::volume() const +{ + return m_volume; +} + +void FakeRadioTunerControl::setVolume(int volume) +{ + int v = volume; + + if (v < 0) + v = 0; + if (100 > v) + v = 100; + + m_volume = v; +} + +bool FakeRadioTunerControl::isMuted() const +{ + return m_muted; +} + +void FakeRadioTunerControl::setMuted(bool muted) +{ + if (muted != m_muted) { + m_muted = muted; + emit mutedChanged(m_muted); + } +} + +bool FakeRadioTunerControl::isSearching() const +{ + return m_searching; +} + +void FakeRadioTunerControl::cancelSearch() +{ + m_searching = false; + m_searchTimer->stop(); + emit searchingChanged(m_searching); +} + +void FakeRadioTunerControl::searchForward() +{ + m_forward = true; + performSearch(); +} + +void FakeRadioTunerControl::searchBackward() +{ + m_forward = false; + performSearch(); +} + +void FakeRadioTunerControl::start() +{ + if (isAvailable() && m_state != QRadioTuner::ActiveState) { + m_state = QRadioTuner::ActiveState; + emit stateChanged(m_state); + } +} + +void FakeRadioTunerControl::stop() +{ + if (m_state != QRadioTuner::StoppedState) { + m_state = QRadioTuner::StoppedState; + emit stateChanged(m_state); + } +} + +QRadioTuner::Error FakeRadioTunerControl::error() const +{ + return QRadioTuner::NoError; +} + +QString FakeRadioTunerControl::errorString() const +{ + return QString(); +} + +void FakeRadioTunerControl::delayedInit() +{ + m_signalStrength = 50; + emit signalStrengthChanged(m_signalStrength); +} + +void FakeRadioTunerControl::performSearch() +{ + m_searching = true; + m_searchTimer->start(qrand() % 1000); + emit searchingChanged(m_searching); +} + +void FakeRadioTunerControl::searchEnded() +{ + int minFreq, maxFreq, newFreq; + QPair<int, int> fRange = frequencyRange(m_currentBand); + + if (m_forward) { + minFreq = m_currentFreq; + maxFreq = fRange.second; + } else { + minFreq = fRange.first; + maxFreq = m_currentFreq; + } + + if ((qreal)(maxFreq - minFreq) / (qreal)(fRange.second - fRange.first) < 0.02) { // don't want to do anything if we have less than 2% of the range to move + return; + } + + newFreq = (qrand() % (maxFreq - minFreq)) + minFreq; + newFreq -= newFreq % frequencyStep(m_currentBand); + + m_searching = false; + m_currentFreq = newFreq; + emit searchingChanged(m_searching); + emit frequencyChanged(m_currentFreq); +} |