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-rw-r--r--examples/multimedia/audiorecorder/audiorecorder.cpp319
-rw-r--r--examples/multimedia/audiorecorder/audiorecorder.h85
-rw-r--r--examples/multimedia/audiorecorder/audiorecorder.pro26
-rw-r--r--examples/multimedia/audiorecorder/audiorecorder.ui261
-rw-r--r--examples/multimedia/audiorecorder/audiorecorder_small.ui266
-rw-r--r--examples/multimedia/audiorecorder/doc/images/audiorecorder.pngbin0 -> 28212 bytes
-rw-r--r--examples/multimedia/audiorecorder/doc/src/audiorecorder.qdoc104
-rw-r--r--examples/multimedia/audiorecorder/main.cpp53
-rw-r--r--examples/multimedia/audiorecorder/qaudiolevel.cpp68
-rw-r--r--examples/multimedia/audiorecorder/qaudiolevel.h62
10 files changed, 1244 insertions, 0 deletions
diff --git a/examples/multimedia/audiorecorder/audiorecorder.cpp b/examples/multimedia/audiorecorder/audiorecorder.cpp
new file mode 100644
index 000000000..6c65f2e1d
--- /dev/null
+++ b/examples/multimedia/audiorecorder/audiorecorder.cpp
@@ -0,0 +1,319 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+** of its contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QAudioProbe>
+#include <QAudioRecorder>
+#include <QDir>
+#include <QFileDialog>
+#include <QMediaRecorder>
+
+#include "audiorecorder.h"
+
+#if defined(Q_WS_MAEMO_6)
+#include "ui_audiorecorder_small.h"
+#else
+#include "ui_audiorecorder.h"
+#endif
+
+static qreal getPeakValue(const QAudioFormat &format);
+static qreal getBufferLevel(const QAudioBuffer &buffer);
+
+template <class T>
+static qreal getBufferLevel(const T *buffer, int samples);
+
+AudioRecorder::AudioRecorder(QWidget *parent) :
+ QMainWindow(parent),
+ ui(new Ui::AudioRecorder),
+ outputLocationSet(false)
+{
+ ui->setupUi(this);
+
+ audioRecorder = new QAudioRecorder(this);
+ probe = new QAudioProbe;
+ connect(probe, SIGNAL(audioBufferProbed(QAudioBuffer)), this, SLOT(processBuffer(QAudioBuffer)));
+ probe->setSource(audioRecorder);
+
+ //audio devices
+ ui->audioDeviceBox->addItem(tr("Default"), QVariant(QString()));
+ foreach (const QString &device, audioRecorder->audioInputs()) {
+ ui->audioDeviceBox->addItem(device, QVariant(device));
+ }
+
+ //audio codecs
+ ui->audioCodecBox->addItem(tr("Default"), QVariant(QString()));
+ foreach (const QString &codecName, audioRecorder->supportedAudioCodecs()) {
+ ui->audioCodecBox->addItem(codecName, QVariant(codecName));
+ }
+
+ //containers
+ ui->containerBox->addItem(tr("Default"), QVariant(QString()));
+ foreach (const QString &containerName, audioRecorder->supportedContainers()) {
+ ui->containerBox->addItem(containerName, QVariant(containerName));
+ }
+
+ //sample rate:
+ ui->sampleRateBox->addItem(tr("Default"), QVariant(0));
+ foreach (int sampleRate, audioRecorder->supportedAudioSampleRates()) {
+ ui->sampleRateBox->addItem(QString::number(sampleRate), QVariant(
+ sampleRate));
+ }
+
+ ui->qualitySlider->setRange(0, int(QMultimedia::VeryHighQuality));
+ ui->qualitySlider->setValue(int(QMultimedia::NormalQuality));
+
+ //bitrates:
+ ui->bitrateBox->addItem(QString("Default"), QVariant(0));
+ ui->bitrateBox->addItem(QString("32000"), QVariant(32000));
+ ui->bitrateBox->addItem(QString("64000"), QVariant(64000));
+ ui->bitrateBox->addItem(QString("96000"), QVariant(96000));
+ ui->bitrateBox->addItem(QString("128000"), QVariant(128000));
+
+ connect(audioRecorder, SIGNAL(durationChanged(qint64)), this,
+ SLOT(updateProgress(qint64)));
+ connect(audioRecorder, SIGNAL(stateChanged(QMediaRecorder::State)), this,
+ SLOT(updateState(QMediaRecorder::State)));
+ connect(audioRecorder, SIGNAL(error(QMediaRecorder::Error)), this,
+ SLOT(displayErrorMessage()));
+}
+
+AudioRecorder::~AudioRecorder()
+{
+ delete audioRecorder;
+ delete probe;
+}
+
+void AudioRecorder::updateProgress(qint64 duration)
+{
+ if (audioRecorder->error() != QMediaRecorder::NoError || duration < 2000)
+ return;
+
+ ui->statusbar->showMessage(tr("Recorded %1 sec").arg(duration / 1000));
+}
+
+void AudioRecorder::updateState(QMediaRecorder::State state)
+{
+ QString statusMessage;
+
+ switch (state) {
+ case QMediaRecorder::RecordingState:
+ ui->recordButton->setText(tr("Stop"));
+ ui->pauseButton->setText(tr("Pause"));
+ if (audioRecorder->outputLocation().isEmpty())
+ statusMessage = tr("Recording");
+ else
+ statusMessage = tr("Recording to %1").arg(
+ audioRecorder->outputLocation().toString());
+ break;
+ case QMediaRecorder::PausedState:
+ ui->recordButton->setText(tr("Stop"));
+ ui->pauseButton->setText(tr("Resume"));
+ statusMessage = tr("Paused");
+ break;
+ case QMediaRecorder::StoppedState:
+ ui->recordButton->setText(tr("Record"));
+ ui->pauseButton->setText(tr("Pause"));
+ statusMessage = tr("Stopped");
+ }
+
+ ui->pauseButton->setEnabled(state != QMediaRecorder::StoppedState);
+
+ if (audioRecorder->error() == QMediaRecorder::NoError)
+ ui->statusbar->showMessage(statusMessage);
+}
+
+static QVariant boxValue(const QComboBox *box)
+{
+ int idx = box->currentIndex();
+ if (idx == -1)
+ return QVariant();
+
+ return box->itemData(idx);
+}
+
+void AudioRecorder::toggleRecord()
+{
+ if (audioRecorder->state() == QMediaRecorder::StoppedState) {
+ audioRecorder->setAudioInput(boxValue(ui->audioDeviceBox).toString());
+
+ if (!outputLocationSet)
+ audioRecorder->setOutputLocation(generateAudioFilePath());
+
+ QAudioEncoderSettings settings;
+ settings.setCodec(boxValue(ui->audioCodecBox).toString());
+ settings.setSampleRate(boxValue(ui->sampleRateBox).toInt());
+ settings.setBitRate(boxValue(ui->bitrateBox).toInt());
+ settings.setQuality(QMultimedia::EncodingQuality(ui->qualitySlider->value()));
+ settings.setEncodingMode(ui->constantQualityRadioButton->isChecked() ?
+ QMultimedia::ConstantQualityEncoding :
+ QMultimedia::ConstantBitRateEncoding);
+
+ QString container = boxValue(ui->containerBox).toString();
+
+ audioRecorder->setEncodingSettings(settings, QVideoEncoderSettings(), container);
+ audioRecorder->record();
+ }
+ else {
+ audioRecorder->stop();
+ }
+}
+
+void AudioRecorder::togglePause()
+{
+ if (audioRecorder->state() != QMediaRecorder::PausedState)
+ audioRecorder->pause();
+ else
+ audioRecorder->record();
+}
+
+void AudioRecorder::setOutputLocation()
+{
+ QString fileName = QFileDialog::getSaveFileName();
+ audioRecorder->setOutputLocation(QUrl(fileName));
+ outputLocationSet = true;
+}
+
+void AudioRecorder::displayErrorMessage()
+{
+ ui->statusbar->showMessage(audioRecorder->errorString());
+}
+
+QUrl AudioRecorder::generateAudioFilePath()
+{
+ QDir outputDir(QDir::rootPath());
+
+ int lastImage = 0;
+ int fileCount = 0;
+ foreach (const QString &fileName, outputDir.entryList(QStringList(QString("testclip_*")))) {
+ int imgNumber = fileName.mid(5, fileName.size() - 9).toInt();
+ lastImage = qMax(lastImage, imgNumber);
+ if (outputDir.exists(fileName))
+ fileCount += 1;
+ }
+ lastImage += fileCount;
+ QUrl location(QDir::toNativeSeparators(outputDir.canonicalPath()
+ + QString("/testclip_%1").arg(lastImage + 1, 4, 10, QLatin1Char('0'))));
+ return location;
+}
+
+// This function returns the maximum possible sample value for a given audio format
+qreal getPeakValue(const QAudioFormat& format)
+{
+ // Note: Only the most common sample formats are supported
+ if (!format.isValid())
+ return 0.0;
+
+ if (format.codec() != "audio/pcm")
+ return 0.0;
+
+ switch (format.sampleType()) {
+ case QAudioFormat::Unknown:
+ break;
+ case QAudioFormat::Float:
+ if (format.sampleSize() != 32) // other sample formats are not supported
+ return 0.0;
+ return 1.00003;
+ case QAudioFormat::SignedInt:
+ if (format.sampleSize() == 32)
+ return 2147483648.0;
+ if (format.sampleSize() == 16)
+ return 32768.0;
+ if (format.sampleSize() == 8)
+ return 128.0;
+ break;
+ case QAudioFormat::UnSignedInt:
+ // Unsigned formats are not supported in this example
+ break;
+ }
+
+ return 0.0;
+}
+
+qreal getBufferLevel(const QAudioBuffer& buffer)
+{
+ if (!buffer.format().isValid() || buffer.format().byteOrder() != QAudioFormat::LittleEndian)
+ return 0.0;
+
+ if (buffer.format().codec() != "audio/pcm")
+ return 0.0;
+
+ qreal peak_value = getPeakValue(buffer.format());
+ if (qFuzzyCompare(peak_value, 0.0))
+ return 0.0;
+
+ switch (buffer.format().sampleType()) {
+ case QAudioFormat::Unknown:
+ case QAudioFormat::UnSignedInt:
+ break;
+ case QAudioFormat::Float:
+ if (buffer.format().sampleSize() == 32)
+ return getBufferLevel(buffer.constData<float>(), buffer.sampleCount()) / peak_value;
+ break;
+ case QAudioFormat::SignedInt:
+ if (buffer.format().sampleSize() == 32)
+ return getBufferLevel(buffer.constData<long int>(), buffer.sampleCount()) / peak_value;
+ if (buffer.format().sampleSize() == 16)
+ return getBufferLevel(buffer.constData<short int>(), buffer.sampleCount()) / peak_value;
+ if (buffer.format().sampleSize() == 8)
+ return getBufferLevel(buffer.constData<signed char>(), buffer.sampleCount()) / peak_value;
+ break;
+ }
+
+ return 0.0;
+}
+
+template <class T>
+qreal getBufferLevel(const T *buffer, int samples)
+{
+ qreal max_value = 0.0;
+
+ for (int i = 0; i < samples; ++i) {
+ qreal value = qAbs(qreal(buffer[i]));
+ if (value > max_value)
+ max_value = value;
+ }
+
+ return max_value;
+}
+
+void AudioRecorder::processBuffer(const QAudioBuffer& buffer)
+{
+ qreal level = getBufferLevel(buffer);
+ ui->audioLevel->setLevel(level);
+}
diff --git a/examples/multimedia/audiorecorder/audiorecorder.h b/examples/multimedia/audiorecorder/audiorecorder.h
new file mode 100644
index 000000000..a58daf5f7
--- /dev/null
+++ b/examples/multimedia/audiorecorder/audiorecorder.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+** of its contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef AUDIORECORDER_H
+#define AUDIORECORDER_H
+
+#include <QMainWindow>
+#include <QMediaRecorder>
+#include <QUrl>
+
+QT_BEGIN_NAMESPACE
+namespace Ui { class AudioRecorder; }
+class QAudioRecorder;
+class QAudioProbe;
+class QAudioBuffer;
+QT_END_NAMESPACE
+
+class AudioRecorder : public QMainWindow
+{
+ Q_OBJECT
+
+public:
+ AudioRecorder(QWidget *parent = 0);
+ ~AudioRecorder();
+
+public slots:
+ void processBuffer(const QAudioBuffer&);
+
+private slots:
+ void setOutputLocation();
+ void togglePause();
+ void toggleRecord();
+
+ void updateState(QMediaRecorder::State);
+ void updateProgress(qint64 pos);
+ void displayErrorMessage();
+ QUrl generateAudioFilePath();
+
+private:
+ Ui::AudioRecorder *ui;
+
+ QAudioRecorder *audioRecorder;
+ QAudioProbe *probe;
+ bool outputLocationSet;
+
+};
+
+#endif // AUDIORECORDER_H
diff --git a/examples/multimedia/audiorecorder/audiorecorder.pro b/examples/multimedia/audiorecorder/audiorecorder.pro
new file mode 100644
index 000000000..6fdc4b13d
--- /dev/null
+++ b/examples/multimedia/audiorecorder/audiorecorder.pro
@@ -0,0 +1,26 @@
+TEMPLATE = app
+TARGET = audiorecorder
+
+QT += multimedia
+
+win32:INCLUDEPATH += $$PWD
+
+HEADERS = \
+ audiorecorder.h \
+ qaudiolevel.h
+
+SOURCES = \
+ main.cpp \
+ audiorecorder.cpp \
+ qaudiolevel.cpp
+
+maemo*: {
+ FORMS += audiorecorder_small.ui
+}else {
+ FORMS += audiorecorder.ui
+}
+
+target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audiorecorder
+INSTALLS += target
+
+QT+=widgets
diff --git a/examples/multimedia/audiorecorder/audiorecorder.ui b/examples/multimedia/audiorecorder/audiorecorder.ui
new file mode 100644
index 000000000..ff6c2d935
--- /dev/null
+++ b/examples/multimedia/audiorecorder/audiorecorder.ui
@@ -0,0 +1,261 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>AudioRecorder</class>
+ <widget class="QMainWindow" name="AudioRecorder">
+ <property name="geometry">
+ <rect>
+ <x>0</x>
+ <y>0</y>
+ <width>297</width>
+ <height>374</height>
+ </rect>
+ </property>
+ <property name="windowTitle">
+ <string>MainWindow</string>
+ </property>
+ <widget class="QWidget" name="centralwidget">
+ <layout class="QGridLayout" name="gridLayout_3">
+ <item row="0" column="0" colspan="3">
+ <layout class="QGridLayout" name="gridLayout_2">
+ <item row="0" column="0">
+ <widget class="QLabel" name="label">
+ <property name="text">
+ <string>Input Device:</string>
+ </property>
+ </widget>
+ </item>
+ <item row="0" column="1">
+ <widget class="QComboBox" name="audioDeviceBox"/>
+ </item>
+ <item row="1" column="0">
+ <widget class="QLabel" name="label_2">
+ <property name="text">
+ <string>Audio Codec:</string>
+ </property>
+ </widget>
+ </item>
+ <item row="1" column="1">
+ <widget class="QComboBox" name="audioCodecBox"/>
+ </item>
+ <item row="2" column="0">
+ <widget class="QLabel" name="label_3">
+ <property name="text">
+ <string>File Container:</string>
+ </property>
+ </widget>
+ </item>
+ <item row="2" column="1">
+ <widget class="QComboBox" name="containerBox"/>
+ </item>
+ <item row="3" column="0">
+ <widget class="QLabel" name="label_4">
+ <property name="text">
+ <string>Sample rate:</string>
+ </property>
+ </widget>
+ </item>
+ <item row="3" column="1">
+ <widget class="QComboBox" name="sampleRateBox"/>
+ </item>
+ </layout>
+ </item>
+ <item row="1" column="0" colspan="3">
+ <widget class="QGroupBox" name="groupBox">
+ <property name="title">
+ <string>Encoding Mode:</string>
+ </property>
+ <layout class="QGridLayout" name="gridLayout">
+ <item row="0" column="0" colspan="2">
+ <widget class="QRadioButton" name="constantQualityRadioButton">
+ <property name="text">
+ <string>Constant Quality:</string>
+ </property>
+ <property name="checked">
+ <bool>true</bool>
+ </property>
+ </widget>
+ </item>
+ <item row="1" column="0">
+ <spacer name="horizontalSpacer_2">
+ <property name="orientation">
+ <enum>Qt::Horizontal</enum>
+ </property>
+ <property name="sizeType">
+ <enum>QSizePolicy::Fixed</enum>
+ </property>
+ <property name="sizeHint" stdset="0">
+ <size>
+ <width>40</width>
+ <height>20</height>
+ </size>
+ </property>
+ </spacer>
+ </item>
+ <item row="1" column="1">
+ <widget class="QSlider" name="qualitySlider">
+ <property name="orientation">
+ <enum>Qt::Horizontal</enum>
+ </property>
+ </widget>
+ </item>
+ <item row="2" column="0" colspan="2">
+ <widget class="QRadioButton" name="constantBitrateRadioButton">
+ <property name="text">
+ <string>Constant Bitrate:</string>
+ </property>
+ </widget>
+ </item>
+ <item row="3" column="0">
+ <spacer name="horizontalSpacer">
+ <property name="orientation">
+ <enum>Qt::Horizontal</enum>
+ </property>
+ <property name="sizeType">
+ <enum>QSizePolicy::Fixed</enum>
+ </property>
+ <property name="sizeHint" stdset="0">
+ <size>
+ <width>40</width>
+ <height>20</height>
+ </size>
+ </property>
+ </spacer>
+ </item>
+ <item row="3" column="1">
+ <widget class="QComboBox" name="bitrateBox">
+ <property name="enabled">
+ <bool>false</bool>
+ </property>
+ </widget>
+ </item>
+ </layout>
+ </widget>
+ </item>
+ <item row="2" column="0">
+ <widget class="QPushButton" name="outputButton">
+ <property name="text">
+ <string>Output...</string>
+ </property>
+ </widget>
+ </item>
+ <item row="2" column="1">
+ <widget class="QPushButton" name="recordButton">
+ <property name="text">
+ <string>Record</string>
+ </property>
+ </widget>
+ </item>
+ <item row="2" column="2">
+ <widget class="QPushButton" name="pauseButton">
+ <property name="enabled">
+ <bool>false</bool>
+ </property>
+ <property name="text">
+ <string>Pause</string>
+ </property>
+ </widget>
+ </item>
+ <item row="3" column="0">
+ <widget class="QLabel" name="levelLabel">
+ <property name="text">
+ <string>Audio Level:</string>
+ </property>
+ </widget>
+ </item>
+ <item row="3" column="1" colspan="-1">
+ <widget class="QAudioLevel" name="audioLevel">
+ </widget>
+ </item>
+ </layout>
+ </widget>
+ <widget class="QStatusBar" name="statusbar"/>
+ </widget>
+ <resources/>
+ <connections>
+ <connection>
+ <sender>constantQualityRadioButton</sender>
+ <signal>toggled(bool)</signal>
+ <receiver>qualitySlider</receiver>
+ <slot>setEnabled(bool)</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>113</x>
+ <y>197</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>115</x>
+ <y>223</y>
+ </hint>
+ </hints>
+ </connection>
+ <connection>
+ <sender>constantBitrateRadioButton</sender>
+ <signal>toggled(bool)</signal>
+ <receiver>bitrateBox</receiver>
+ <slot>setEnabled(bool)</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>173</x>
+ <y>259</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>190</x>
+ <y>291</y>
+ </hint>
+ </hints>
+ </connection>
+ <connection>
+ <sender>outputButton</sender>
+ <signal>clicked()</signal>
+ <receiver>AudioRecorder</receiver>
+ <slot>setOutputLocation()</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>46</x>
+ <y>340</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>6</x>
+ <y>302</y>
+ </hint>
+ </hints>
+ </connection>
+ <connection>
+ <sender>recordButton</sender>
+ <signal>clicked()</signal>
+ <receiver>AudioRecorder</receiver>
+ <slot>toggleRecord()</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>191</x>
+ <y>340</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>113</x>
+ <y>317</y>
+ </hint>
+ </hints>
+ </connection>
+ <connection>
+ <sender>pauseButton</sender>
+ <signal>clicked()</signal>
+ <receiver>AudioRecorder</receiver>
+ <slot>togglePause()</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>252</x>
+ <y>334</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>258</x>
+ <y>346</y>
+ </hint>
+ </hints>
+ </connection>
+ </connections>
+ <slots>
+ <slot>setOutputLocation()</slot>
+ <slot>toggleRecord()</slot>
+ <slot>togglePause()</slot>
+ </slots>
+</ui>
diff --git a/examples/multimedia/audiorecorder/audiorecorder_small.ui b/examples/multimedia/audiorecorder/audiorecorder_small.ui
new file mode 100644
index 000000000..9d23c4267
--- /dev/null
+++ b/examples/multimedia/audiorecorder/audiorecorder_small.ui
@@ -0,0 +1,266 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>AudioRecorder</class>
+ <widget class="QMainWindow" name="AudioRecorder">
+ <property name="geometry">
+ <rect>
+ <x>0</x>
+ <y>0</y>
+ <width>420</width>
+ <height>346</height>
+ </rect>
+ </property>
+ <property name="windowTitle">
+ <string>MainWindow</string>
+ </property>
+ <widget class="QWidget" name="centralwidget">
+ <layout class="QGridLayout" name="gridLayout_5">
+ <item row="0" column="0" colspan="3">
+ <widget class="QScrollArea" name="scrollArea">
+ <property name="focusPolicy">
+ <enum>Qt::ClickFocus</enum>
+ </property>
+ <property name="widgetResizable">
+ <bool>true</bool>
+ </property>
+ <widget class="QWidget" name="scrollAreaWidgetContents">
+ <property name="geometry">
+ <rect>
+ <x>0</x>
+ <y>0</y>
+ <width>398</width>
+ <height>275</height>
+ </rect>
+ </property>
+ <layout class="QGridLayout" name="gridLayout_4">
+ <item row="0" column="0">
+ <widget class="QWidget" name="widget" native="true">
+ <layout class="QGridLayout" name="gridLayout_3">
+ <item row="0" column="0">
+ <layout class="QGridLayout" name="gridLayout_2">
+ <item row="0" column="0">
+ <widget class="QLabel" name="label">
+ <property name="text">
+ <string>Input Device:</string>
+ </property>
+ </widget>
+ </item>
+ <item row="0" column="1">
+ <widget class="QComboBox" name="audioDeviceBox"/>
+ </item>
+ <item row="1" column="0">
+ <widget class="QLabel" name="label_2">
+ <property name="text">
+ <string>Audio Codec:</string>
+ </property>
+ </widget>
+ </item>
+ <item row="1" column="1">
+ <widget class="QComboBox" name="audioCodecBox"/>
+ </item>
+ <item row="2" column="0">
+ <widget class="QLabel" name="label_3">
+ <property name="text">
+ <string>File Container:</string>
+ </property>
+ </widget>
+ </item>
+ <item row="2" column="1">
+ <widget class="QComboBox" name="containerBox"/>
+ </item>
+ <item row="3" column="0">
+ <widget class="QLabel" name="label_4">
+ <property name="text">
+ <string>Sample rate:</string>
+ </property>
+ </widget>
+ </item>
+ <item row="3" column="1">
+ <widget class="QComboBox" name="sampleRateBox"/>
+ </item>
+ </layout>
+ </item>
+ <item row="1" column="0">
+ <layout class="QGridLayout" name="gridLayout">
+ <item row="0" column="0">
+ <widget class="QRadioButton" name="constantQualityRadioButton">
+ <property name="text">
+ <string>Quality:</string>
+ </property>
+ <property name="checked">
+ <bool>true</bool>
+ </property>
+ </widget>
+ </item>
+ <item row="0" column="1">
+ <widget class="QRadioButton" name="constantBitrateRadioButton">
+ <property name="text">
+ <string>Bitrate:</string>
+ </property>
+ </widget>
+ </item>
+ <item row="1" column="0">
+ <widget class="QSlider" name="qualitySlider">
+ <property name="sizePolicy">
+ <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+ <horstretch>1</horstretch>
+ <verstretch>0</verstretch>
+ </sizepolicy>
+ </property>
+ <property name="orientation">
+ <enum>Qt::Horizontal</enum>
+ </property>
+ </widget>
+ </item>
+ <item row="1" column="1">
+ <widget class="QComboBox" name="bitrateBox">
+ <property name="enabled">
+ <bool>false</bool>
+ </property>
+ <property name="sizePolicy">
+ <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+ <horstretch>1</horstretch>
+ <verstretch>0</verstretch>
+ </sizepolicy>
+ </property>
+ </widget>
+ </item>
+ </layout>
+ </item>
+ <item row="2" column="0">
+ <spacer name="verticalSpacer">
+ <property name="orientation">
+ <enum>Qt::Vertical</enum>
+ </property>
+ <property name="sizeHint" stdset="0">
+ <size>
+ <width>20</width>
+ <height>29</height>
+ </size>
+ </property>
+ </spacer>
+ </item>
+ </layout>
+ </widget>
+ </item>
+ </layout>
+ </widget>
+ </widget>
+ </item>
+ <item row="1" column="0">
+ <widget class="QPushButton" name="outputButton">
+ <property name="text">
+ <string>Output...</string>
+ </property>
+ </widget>
+ </item>
+ <item row="1" column="1">
+ <widget class="QPushButton" name="recordButton">
+ <property name="text">
+ <string>Record</string>
+ </property>
+ </widget>
+ </item>
+ <item row="1" column="2">
+ <widget class="QPushButton" name="pauseButton">
+ <property name="enabled">
+ <bool>false</bool>
+ </property>
+ <property name="text">
+ <string>Pause</string>
+ </property>
+ </widget>
+ </item>
+ </layout>
+ </widget>
+ <widget class="QStatusBar" name="statusbar"/>
+ </widget>
+ <resources/>
+ <connections>
+ <connection>
+ <sender>constantQualityRadioButton</sender>
+ <signal>toggled(bool)</signal>
+ <receiver>qualitySlider</receiver>
+ <slot>setEnabled(bool)</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>113</x>
+ <y>197</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>115</x>
+ <y>223</y>
+ </hint>
+ </hints>
+ </connection>
+ <connection>
+ <sender>constantBitrateRadioButton</sender>
+ <signal>toggled(bool)</signal>
+ <receiver>bitrateBox</receiver>
+ <slot>setEnabled(bool)</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>173</x>
+ <y>259</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>190</x>
+ <y>291</y>
+ </hint>
+ </hints>
+ </connection>
+ <connection>
+ <sender>outputButton</sender>
+ <signal>clicked()</signal>
+ <receiver>AudioRecorder</receiver>
+ <slot>setOutputLocation()</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>46</x>
+ <y>340</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>6</x>
+ <y>302</y>
+ </hint>
+ </hints>
+ </connection>
+ <connection>
+ <sender>recordButton</sender>
+ <signal>clicked()</signal>
+ <receiver>AudioRecorder</receiver>
+ <slot>toggleRecord()</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>191</x>
+ <y>340</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>113</x>
+ <y>317</y>
+ </hint>
+ </hints>
+ </connection>
+ <connection>
+ <sender>pauseButton</sender>
+ <signal>clicked()</signal>
+ <receiver>AudioRecorder</receiver>
+ <slot>togglePause()</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>252</x>
+ <y>334</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>258</x>
+ <y>346</y>
+ </hint>
+ </hints>
+ </connection>
+ </connections>
+ <slots>
+ <slot>setOutputLocation()</slot>
+ <slot>toggleRecord()</slot>
+ <slot>togglePause()</slot>
+ </slots>
+</ui>
diff --git a/examples/multimedia/audiorecorder/doc/images/audiorecorder.png b/examples/multimedia/audiorecorder/doc/images/audiorecorder.png
new file mode 100644
index 000000000..6643bf320
--- /dev/null
+++ b/examples/multimedia/audiorecorder/doc/images/audiorecorder.png
Binary files differ
diff --git a/examples/multimedia/audiorecorder/doc/src/audiorecorder.qdoc b/examples/multimedia/audiorecorder/doc/src/audiorecorder.qdoc
new file mode 100644
index 000000000..3dea92cac
--- /dev/null
+++ b/examples/multimedia/audiorecorder/doc/src/audiorecorder.qdoc
@@ -0,0 +1,104 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: http://www.gnu.org/copyleft/fdl.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+ \example audiorecorder
+ \title Audio Recorder Example
+ \ingroup audio_examples
+ \brief The Audio Recorder Example shows how to create a simple audio recorder.
+
+ It demonstrates the discovery of the supported devices and codecs and the use
+ of recording functions in the QAudioRecorder class.
+
+ We display a window for the user to select the appropriate audio input,
+ codec, container, and sample rate. Allow a setting of either quality or
+ bitrate. Finally, the output file can be selected and recording can be
+ started.
+
+ The lists are setup using the \l{QAudioRecorder::audioInputs()}{audioInputs()},
+ \l{QAudioRecorder::supportedAudioCodecs()}{supportedAudioCodecs()},
+ \l{QAudioRecorder::supportedContainers()}{supportedContainers()},
+ \l{QAudioRecorder::supportedContainers()}{supportedContainers()}, and
+ \l{QAudioRecorder::supportedAudioSampleRates()}{supportedAudioSampleRates()}
+ methods. The quality slider is setup from 0 (zero) to
+ \l{QMultimedia::VeryHighQuality} with a default value of
+ \l{QMultimedia::NormalQuality}, while the bitrates are hardcoded
+ into the list.
+
+ \image audiorecorder.png
+
+ To record audio we simply create a QAudioRecorder object.
+
+ \code
+ audioRecorder = new QAudioRecorder(this);
+ \endcode
+
+ And setup the lists as described above. The text on the record and pause
+ buttons are toggled depending on the \l{QMediaRecorder::State}{state} of
+ the \c audioRecorder object. This means that if the state is
+ \l{QMediaRecorder::StoppedState} then the button text will be "Record" and
+ "Pause". In \l{QMediaRecorder::RecordingState} the record button will have
+ the text "Stop", and in \l{QMediaRecorder::PausedState} the pause button
+ will have the text "Resume".
+
+ Pressing the buttons will also result in a toggle based on the state. If
+ recording is stopped, then pressing the record button will setup the
+ \l{QAudioEncoderSettings} based on the values of the selection lists,
+ will set the encoding settings and container on the \c audioRecorder
+ object, and start recording using the
+ \l{QMediaRecorder::record()}{record()} method.
+
+ \code
+ QAudioEncoderSettings settings;
+ settings.setCodec(boxValue(ui->audioCodecBox).toString());
+ settings.setSampleRate(boxValue(ui->sampleRateBox).toInt());
+ settings.setBitRate(boxValue(ui->bitrateBox).toInt());
+ settings.setQuality(QMultimedia::EncodingQuality(ui->qualitySlider->value()));
+ settings.setEncodingMode(ui->constantQualityRadioButton->isChecked() ?
+ QMultimedia::ConstantQualityEncoding :
+ QMultimedia::ConstantBitRateEncoding);
+
+ QString container = boxValue(ui->containerBox).toString();
+
+ audioRecorder->setEncodingSettings(settings, QVideoEncoderSettings(), container);
+ audioRecorder->record();
+ \endcode
+
+ While recording, the status bar of the application is updated with duration information
+ from the \l{QMediaRecorder::durationChanged()}{durationChanged} signal from the
+ \c audioRecorder object.
+
+ \code
+ ui->statusbar->showMessage(tr("Recorded %1 sec").arg(duration / 1000));
+ \endcode
+
+
+
+
+*/
+
+
diff --git a/examples/multimedia/audiorecorder/main.cpp b/examples/multimedia/audiorecorder/main.cpp
new file mode 100644
index 000000000..532cfc86b
--- /dev/null
+++ b/examples/multimedia/audiorecorder/main.cpp
@@ -0,0 +1,53 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+** of its contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "audiorecorder.h"
+
+#include <QtWidgets>
+
+int main(int argc, char *argv[])
+{
+ QApplication app(argc, argv);
+
+ AudioRecorder recorder;
+ recorder.show();
+
+ return app.exec();
+}
diff --git a/examples/multimedia/audiorecorder/qaudiolevel.cpp b/examples/multimedia/audiorecorder/qaudiolevel.cpp
new file mode 100644
index 000000000..1ae034628
--- /dev/null
+++ b/examples/multimedia/audiorecorder/qaudiolevel.cpp
@@ -0,0 +1,68 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+** of its contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qaudiolevel.h"
+#include <QPainter>
+
+QAudioLevel::QAudioLevel(QWidget *parent)
+ : QWidget(parent)
+ , m_level(0.0)
+{
+}
+
+void QAudioLevel::setLevel(qreal level)
+{
+ if (m_level != level) {
+ m_level = level;
+ update();
+ }
+}
+
+void QAudioLevel::paintEvent(QPaintEvent *event)
+{
+ Q_UNUSED(event);
+
+ QPainter painter(this);
+ // draw level
+ qreal widthLevel = m_level * width();
+ painter.fillRect(0, 0, widthLevel, height(), Qt::red);
+ // clear the rest of the control
+ painter.fillRect(widthLevel, 0, width(), height(), Qt::black);
+}
diff --git a/examples/multimedia/audiorecorder/qaudiolevel.h b/examples/multimedia/audiorecorder/qaudiolevel.h
new file mode 100644
index 000000000..7a9dd07ce
--- /dev/null
+++ b/examples/multimedia/audiorecorder/qaudiolevel.h
@@ -0,0 +1,62 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+** of its contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QAUDIOLEVEL_H
+#define QAUDIOLEVEL_H
+
+#include <QWidget>
+
+class QAudioLevel : public QWidget
+{
+ Q_OBJECT
+public:
+ explicit QAudioLevel(QWidget *parent = 0);
+
+ // Using [0; 1.0] range
+ void setLevel(qreal level);
+
+protected:
+ void paintEvent(QPaintEvent *event);
+
+private:
+ qreal m_level;
+};
+
+#endif // QAUDIOLEVEL_H
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