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centralize and fixup example sources install targets

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This follows suit with aeb036e in qtbase.

Change-Id: Ie8580d0a1f38ab9858b0e44c9f99bdc552a1752a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: hjk <qthjk@ovi.com>
This commit is contained in:
Joerg Bornemann
2012-12-05 13:03:09 +01:00
committed by The Qt Project
parent 90c8ba233b
commit 6b4994c265
407 changed files with 216 additions and 271 deletions
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319
examples/multimedia/audiorecorder/audiorecorder.cpp Normal file
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/****************************************************************************
**
** 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);
}

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examples/multimedia/audiorecorder/audiorecorder.h Normal file
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/****************************************************************************
**
** 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

26
examples/multimedia/audiorecorder/audiorecorder.pro Normal file
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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

261
examples/multimedia/audiorecorder/audiorecorder.ui Normal file
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<?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>

266
examples/multimedia/audiorecorder/audiorecorder_small.ui Normal file
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<?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>

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/****************************************************************************
**
** 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
*/

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/****************************************************************************
**
** 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();
}

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/****************************************************************************
**
** 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);
}

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/****************************************************************************
**
** 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