Initial copy of QtMultimediaKit.
Comes from original repo, with SHA1: 2c82d5611655e5967f5c5095af50c0991c4378b2
This commit is contained in:
Michael Goddard
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examples/audiorecorder/audiorecorder.cpp
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225
examples/audiorecorder/audiorecorder.cpp
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtCore/qdir.h>
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#include <QtGui/qfiledialog.h>
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#include <qaudiocapturesource.h>
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#include <qmediarecorder.h>
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#include "audiorecorder.h"
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#if defined(Q_WS_MAEMO_5) || defined(Q_WS_MAEMO_6) || defined(SYMBIAN_S60_3X)
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#include "ui_audiorecorder_small.h"
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#else
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#include "ui_audiorecorder.h"
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#endif
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AudioRecorder::AudioRecorder(QWidget *parent)
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:
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QMainWindow(parent),
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ui(new Ui::AudioRecorder),
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outputLocationSet(false)
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{
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ui->setupUi(this);
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audiosource = new QAudioCaptureSource(this);
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capture = new QMediaRecorder(audiosource, this);
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//audio devices
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ui->audioDeviceBox->addItem(tr("Default"), QVariant(QString()));
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foreach(const QString &device, audiosource->audioInputs()) {
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ui->audioDeviceBox->addItem(device, QVariant(device));
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}
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//audio codecs
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ui->audioCodecBox->addItem(tr("Default"), QVariant(QString()));
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foreach(const QString &codecName, capture->supportedAudioCodecs()) {
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ui->audioCodecBox->addItem(codecName, QVariant(codecName));
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}
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//containers
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ui->containerBox->addItem(tr("Default"), QVariant(QString()));
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foreach(const QString &containerName, capture->supportedContainers()) {
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ui->containerBox->addItem(containerName, QVariant(containerName));
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}
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//sample rate:
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ui->sampleRateBox->addItem(tr("Default"), QVariant(0));
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foreach(int sampleRate, capture->supportedAudioSampleRates()) {
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ui->sampleRateBox->addItem(QString::number(sampleRate), QVariant(
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sampleRate));
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}
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ui->qualitySlider->setRange(0, int(QtMultimediaKit::VeryHighQuality));
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ui->qualitySlider->setValue(int(QtMultimediaKit::NormalQuality));
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//bitrates:
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ui->bitrateBox->addItem(QString("Default"), QVariant(0));
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ui->bitrateBox->addItem(QString("32000"), QVariant(32000));
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ui->bitrateBox->addItem(QString("64000"), QVariant(64000));
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ui->bitrateBox->addItem(QString("96000"), QVariant(96000));
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ui->bitrateBox->addItem(QString("128000"), QVariant(128000));
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connect(capture, SIGNAL(durationChanged(qint64)), this,
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SLOT(updateProgress(qint64)));
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connect(capture, SIGNAL(stateChanged(QMediaRecorder::State)), this,
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SLOT(updateState(QMediaRecorder::State)));
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connect(capture, SIGNAL(error(QMediaRecorder::Error)), this,
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SLOT(displayErrorMessage()));
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}
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AudioRecorder::~AudioRecorder()
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{
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delete capture;
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delete audiosource;
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}
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void AudioRecorder::updateProgress(qint64 duration)
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{
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if (capture->error() != QMediaRecorder::NoError || duration < 2000)
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return;
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ui->statusbar->showMessage(tr("Recorded %1 sec").arg(qRound(duration / 1000)));
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}
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void AudioRecorder::updateState(QMediaRecorder::State state)
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{
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QString statusMessage;
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switch (state) {
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case QMediaRecorder::RecordingState:
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ui->recordButton->setText(tr("Stop"));
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ui->pauseButton->setText(tr("Pause"));
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if (capture->outputLocation().isEmpty())
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statusMessage = tr("Recording");
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else
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statusMessage = tr("Recording to %1").arg(
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capture->outputLocation().toString());
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break;
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case QMediaRecorder::PausedState:
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ui->recordButton->setText(tr("Stop"));
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ui->pauseButton->setText(tr("Resume"));
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statusMessage = tr("Paused");
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break;
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case QMediaRecorder::StoppedState:
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ui->recordButton->setText(tr("Record"));
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ui->pauseButton->setText(tr("Pause"));
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statusMessage = tr("Stopped");
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}
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ui->pauseButton->setEnabled(state != QMediaRecorder::StoppedState);
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if (capture->error() == QMediaRecorder::NoError)
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ui->statusbar->showMessage(statusMessage);
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}
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static QVariant boxValue(const QComboBox *box)
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{
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int idx = box->currentIndex();
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if (idx == -1)
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return QVariant();
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return box->itemData(idx);
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}
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void AudioRecorder::toggleRecord()
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{
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if (capture->state() == QMediaRecorder::StoppedState) {
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audiosource->setAudioInput(boxValue(ui->audioDeviceBox).toString());
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if (!outputLocationSet)
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capture->setOutputLocation(generateAudioFilePath());
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QAudioEncoderSettings settings;
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settings.setCodec(boxValue(ui->audioCodecBox).toString());
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settings.setSampleRate(boxValue(ui->sampleRateBox).toInt());
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settings.setBitRate(boxValue(ui->bitrateBox).toInt());
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settings.setQuality(QtMultimediaKit::EncodingQuality(ui->qualitySlider->value()));
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settings.setEncodingMode(ui->constantQualityRadioButton->isChecked() ?
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QtMultimediaKit::ConstantQualityEncoding :
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QtMultimediaKit::ConstantBitRateEncoding);
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QString container = boxValue(ui->containerBox).toString();
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capture->setEncodingSettings(settings, QVideoEncoderSettings(), container);
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capture->record();
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}
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else {
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capture->stop();
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}
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}
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void AudioRecorder::togglePause()
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{
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if (capture->state() != QMediaRecorder::PausedState)
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capture->pause();
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else
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capture->record();
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}
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void AudioRecorder::setOutputLocation()
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{
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QString fileName = QFileDialog::getSaveFileName();
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capture->setOutputLocation(QUrl(fileName));
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outputLocationSet = true;
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}
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void AudioRecorder::displayErrorMessage()
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{
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ui->statusbar->showMessage(capture->errorString());
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}
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QUrl AudioRecorder::generateAudioFilePath()
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{
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QDir outputDir(QDir::rootPath());
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int lastImage = 0;
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int fileCount = 0;
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foreach(QString fileName, outputDir.entryList(QStringList() << "testclip_*")) {
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int imgNumber = fileName.mid(5, fileName.size() - 9).toInt();
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lastImage = qMax(lastImage, imgNumber);
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if (outputDir.exists(fileName))
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fileCount += 1;
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}
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lastImage += fileCount;
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QUrl location(QDir::toNativeSeparators(outputDir.canonicalPath() + QString("/testclip_%1").arg(lastImage + 1, 4, 10, QLatin1Char('0'))));
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return location;
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}
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