slapin/qtmultimedia
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Update audiooutput example with volume slider

Browse Source 
Update example for new volume API

Change-Id: I1b9ccbccc62930549e667f0063b3d76feb23a2ea
Reviewed-on: http://codereview.qt-project.org/5662
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: derick hawcroft <derick.hawcroft@nokia.com>
This commit is contained in:
hawcroft
2011-09-28 13:04:18 +10:00
committed by Qt by Nokia
parent a645b75e35
commit ee0ea8c442
2 changed files with 26 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
examples/audiooutput/audiooutput.cpp
View File

@@ -51,6 +51,7 @@ const QString AudioTest::PushModeLabel(tr("Enable push mode"));
const QString AudioTest::PullModeLabel(tr("Enable pull mode")); const QString AudioTest::PullModeLabel(tr("Enable pull mode"));
const QString AudioTest::SuspendLabel(tr("Suspend playback")); const QString AudioTest::SuspendLabel(tr("Suspend playback"));
const QString AudioTest::ResumeLabel(tr("Resume playback")); const QString AudioTest::ResumeLabel(tr("Resume playback"));
const QString AudioTest::VolumeLabel(tr("Volume:"));
const int DurationSeconds = 1; const int DurationSeconds = 1;
const int ToneFrequencyHz = 600; const int ToneFrequencyHz = 600;
@@ -190,6 +191,18 @@ void AudioTest::initializeWindow()
connect(m_suspendResumeButton, SIGNAL(clicked()), SLOT(toggleSuspendResume())); connect(m_suspendResumeButton, SIGNAL(clicked()), SLOT(toggleSuspendResume()));
layout->addWidget(m_suspendResumeButton); layout->addWidget(m_suspendResumeButton);
QHBoxLayout *volumeBox = new QHBoxLayout;
m_volumeLabel = new QLabel;
m_volumeLabel->setText(VolumeLabel);
m_volumeSlider = new QSlider(Qt::Horizontal);
m_volumeSlider->setMinimum(0);
m_volumeSlider->setMaximum(100);
m_volumeSlider->setSingleStep(10);
connect(m_volumeSlider, SIGNAL(valueChanged(int)), this, SLOT(volumeChanged(int)));
volumeBox->addWidget(m_volumeLabel);
volumeBox->addWidget(m_volumeSlider);
layout->addLayout(volumeBox);
window->setLayout(layout.data()); window->setLayout(layout.data());
layout.take(); // ownership transferred layout.take(); // ownership transferred
@@ -231,6 +244,7 @@ void AudioTest::createAudioOutput()
connect(m_audioOutput, SIGNAL(stateChanged(QAudio::State)), SLOT(stateChanged(QAudio::State))); connect(m_audioOutput, SIGNAL(stateChanged(QAudio::State)), SLOT(stateChanged(QAudio::State)));
m_generator->start(); m_generator->start();
m_audioOutput->start(m_generator); m_audioOutput->start(m_generator);
m_volumeSlider->setValue(int(m_audioOutput->volume()*100.0f));
} }
AudioTest::~AudioTest() AudioTest::~AudioTest()
@@ -248,6 +262,12 @@ void AudioTest::deviceChanged(int index)
createAudioOutput(); createAudioOutput();
} }
void AudioTest::volumeChanged(int value)
{
if (m_audioOutput)
m_audioOutput->setVolume(qreal(value/100.0f));
}
void AudioTest::notified() void AudioTest::notified()
{ {
qWarning() << "bytesFree = " << m_audioOutput->bytesFree() qWarning() << "bytesFree = " << m_audioOutput->bytesFree()

6
examples/audiooutput/audiooutput.h
View File

@@ -45,6 +45,8 @@
#include <QObject> #include <QObject>
#include <QMainWindow> #include <QMainWindow>
#include <QLabel>
#include <QSlider>
#include <QIODevice> #include <QIODevice>
#include <QTimer> #include <QTimer>
#include <QPushButton> #include <QPushButton>
@@ -94,6 +96,8 @@ private:
QPushButton* m_modeButton; QPushButton* m_modeButton;
QPushButton* m_suspendResumeButton; QPushButton* m_suspendResumeButton;
QComboBox* m_deviceBox; QComboBox* m_deviceBox;
QLabel* m_volumeLabel;
QSlider* m_volumeSlider;
QAudioDeviceInfo m_device; QAudioDeviceInfo m_device;
Generator* m_generator; Generator* m_generator;
@@ -108,6 +112,7 @@ private:
static const QString PullModeLabel; static const QString PullModeLabel;
static const QString SuspendLabel; static const QString SuspendLabel;
static const QString ResumeLabel; static const QString ResumeLabel;
static const QString VolumeLabel;
private slots: private slots:
void notified(); void notified();
@@ -116,6 +121,7 @@ private slots:
void toggleSuspendResume(); void toggleSuspendResume();
void stateChanged(QAudio::State state); void stateChanged(QAudio::State state);
void deviceChanged(int index); void deviceChanged(int index);
void volumeChanged(int);
}; };
#endif #endif