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| |
| #include "qdeclarative_playvariation_p.h" |
| #include "qdeclarative_audioengine_p.h" |
| #include "qsoundinstance_p.h" |
| #include "qdebug.h" |
| #include "qrandom.h" |
| |
| #define DEBUG_AUDIOENGINE |
| |
| QT_USE_NAMESPACE |
| |
| /*! |
| \qmltype PlayVariation |
| \instantiates QDeclarativePlayVariation |
| \since 5.0 |
| \brief Define a playback variation for \l {Sound} {sounds}. |
| So each time the playback of the same sound can be a slightly different even with the same |
| AudioSample. |
| |
| \inqmlmodule QtAudioEngine |
| \ingroup multimedia_audioengine |
| \inherits Item |
| \preliminary |
| \deprecated |
| |
| PlayVariation must be defined inside a \l Sound or be added to it using |
| \l{QtAudioEngine::Sound::addPlayVariation()}{Sound.addPlayVariation()} |
| if PlayVariation is created dynamically. |
| |
| \qml |
| Rectangle { |
| color:"white" |
| width: 300 |
| height: 500 |
| |
| AudioEngine { |
| id:audioengine |
| |
| AudioSample { |
| name:"explosion01" |
| source: "explosion-01.wav" |
| } |
| |
| AudioSample { |
| name:"explosion02" |
| source: "explosion-02.wav" |
| } |
| |
| Sound { |
| name:"explosion" |
| playType: Sound.Random |
| PlayVariation { |
| sample:"explosion01" |
| minPitch: 0.8 |
| maxPitch: 1.1 |
| } |
| PlayVariation { |
| sample:"explosion02" |
| minGain: 1.1 |
| maxGain: 1.5 |
| } |
| } |
| } |
| } |
| \endqml |
| |
| */ |
| QDeclarativePlayVariation::QDeclarativePlayVariation(QObject *parent) |
| : QObject(parent) |
| , m_looping(false) |
| , m_maxGain(1) |
| , m_minGain(1) |
| , m_maxPitch(1) |
| , m_minPitch(1) |
| , m_sampleObject(0) |
| , m_engine(0) |
| { |
| } |
| |
| QDeclarativePlayVariation::~QDeclarativePlayVariation() |
| { |
| } |
| |
| void QDeclarativePlayVariation::setEngine(QDeclarativeAudioEngine *engine) |
| { |
| if (m_maxGain < m_minGain) { |
| qWarning("PlayVariation: maxGain must be no less than minGain"); |
| qSwap(m_minGain, m_maxGain); |
| } |
| if (m_maxPitch < m_minPitch) { |
| qWarning("PlayVariation: maxPitch must be no less than minPitch"); |
| qSwap(m_minPitch, m_maxPitch); |
| } |
| m_engine = engine; |
| } |
| |
| /*! |
| \qmlproperty string QtAudioEngine::PlayVariation::sample |
| |
| This property specifies which \l AudioSample this variation will use. |
| */ |
| QString QDeclarativePlayVariation::sample() const |
| { |
| return m_sample; |
| } |
| |
| void QDeclarativePlayVariation::setSample(const QString& sample) |
| { |
| if (m_engine) { |
| qWarning("PlayVariation: cannot change properties after initialization."); |
| return; |
| } |
| m_sample = sample; |
| } |
| |
| /*! |
| \qmlproperty bool QtAudioEngine::PlayVariation::looping |
| |
| This property indicates whether the playback will be looped or not. |
| */ |
| bool QDeclarativePlayVariation::isLooping() const |
| { |
| return m_looping; |
| } |
| |
| void QDeclarativePlayVariation::setLooping(bool looping) |
| { |
| if (m_engine) { |
| qWarning("PlayVariation: cannot change properties after initialization."); |
| return; |
| } |
| m_looping = looping; |
| } |
| |
| /*! |
| \qmlproperty real QtAudioEngine::PlayVariation::maxGain |
| |
| This property specifies the maximum gain adjustment that can be applied in any playback. |
| */ |
| qreal QDeclarativePlayVariation::maxGain() const |
| { |
| return m_maxGain; |
| } |
| |
| void QDeclarativePlayVariation::setMaxGain(qreal maxGain) |
| { |
| if (m_engine) { |
| qWarning("PlayVariation: cannot change properties after initialization."); |
| return; |
| } |
| if (maxGain <= 0) { |
| qWarning("PlayVariation: maxGain must be greater than 0"); |
| return; |
| } |
| m_maxGain = maxGain; |
| } |
| |
| /*! |
| \qmlproperty real QtAudioEngine::PlayVariation::minGain |
| |
| This property specifies the minimum gain adjustment that can be applied in any playback. |
| */ |
| qreal QDeclarativePlayVariation::minGain() const |
| { |
| return m_minGain; |
| } |
| |
| void QDeclarativePlayVariation::setMinGain(qreal minGain) |
| { |
| if (m_engine) { |
| qWarning("PlayVariation: cannot change properties after initialization."); |
| return; |
| } |
| if (minGain < 0) { |
| qWarning("PlayVariation: minGain must be no less than 0"); |
| return; |
| } |
| m_minGain = minGain; |
| } |
| |
| /*! |
| \qmlproperty real QtAudioEngine::PlayVariation::maxPitch |
| |
| This property specifies the maximum pitch adjustment that can be applied in any playback. |
| */ |
| qreal QDeclarativePlayVariation::maxPitch() const |
| { |
| return m_maxPitch; |
| } |
| |
| void QDeclarativePlayVariation::setMaxPitch(qreal maxPitch) |
| { |
| if (m_engine) { |
| qWarning("PlayVariation: cannot change properties after initialization."); |
| return; |
| } |
| if (maxPitch < 0) { |
| qWarning("PlayVariation: maxPitch must be no less than 0"); |
| return; |
| } |
| m_maxPitch = maxPitch; |
| } |
| |
| /*! |
| \qmlproperty real QtAudioEngine::PlayVariation::minPitch |
| |
| This property specifies the minimum pitch adjustment that can be applied in any playback. |
| */ |
| qreal QDeclarativePlayVariation::minPitch() const |
| { |
| return m_minPitch; |
| } |
| |
| void QDeclarativePlayVariation::setMinPitch(qreal minPitch) |
| { |
| if (m_engine) { |
| qWarning("PlayVariation: cannot change properties after initialization."); |
| return; |
| } |
| if (m_minPitch < 0) { |
| qWarning("PlayVariation: m_minPitch must be no less than 0"); |
| return; |
| } |
| m_minPitch = minPitch; |
| } |
| |
| QDeclarativeAudioSample* QDeclarativePlayVariation::sampleObject() const |
| { |
| return m_sampleObject; |
| } |
| |
| void QDeclarativePlayVariation::setSampleObject(QDeclarativeAudioSample *sampleObject) |
| { |
| m_sampleObject = sampleObject; |
| } |
| |
| void QDeclarativePlayVariation::applyParameters(QSoundInstance *soundInstance) |
| { |
| qreal pitch = QRandomGenerator::global()->bounded(1001 * 0.001f) * (m_maxPitch - m_minPitch) + m_minPitch; |
| qreal gain = QRandomGenerator::global()->bounded(1001 * 0.001f) * (m_maxGain - m_minGain) + m_minGain; |
| soundInstance->updateVariationParameters(pitch, gain, m_looping); |
| } |