qtmobility/examples/cameracapture/settings.cpp
changeset 1 2b40d63a9c3d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/examples/cameracapture/settings.cpp	Fri Apr 16 15:51:22 2010 +0300
@@ -0,0 +1,194 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "settings.h"
+#ifdef Q_OS_SYMBIAN
+#include "ui_settings_s60.h"
+#else
+#include "ui_settings.h"
+#endif
+
+#include <QtGui/qcombobox.h>
+#include <QtCore/qdebug.h>
+#include <qmediarecorder.h>
+#include <qmediaservice.h>
+
+
+
+Settings::Settings(QMediaRecorder *mediaRecorder, QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::SettingsUi),
+    mediaRecorder(mediaRecorder)
+{
+    ui->setupUi(this);
+
+    //audio codecs
+    foreach(const QString &codecName, mediaRecorder->supportedAudioCodecs()) {
+        QString description = mediaRecorder->audioCodecDescription(codecName);
+        ui->audioCodecBox->addItem(codecName+": "+description, QVariant(codecName));
+    }
+
+    //sample rate:
+    foreach(int sampleRate, mediaRecorder->supportedAudioSampleRates()) {
+        ui->audioSampleRateBox->addItem(QString::number(sampleRate), QVariant(sampleRate));
+    }
+
+    ui->audioQualitySlider->setRange(0, int(QtMedia::VeryHighQuality));
+
+    //video codecs
+    foreach(const QString &codecName, mediaRecorder->supportedVideoCodecs()) {
+        QString description = mediaRecorder->videoCodecDescription(codecName);
+        ui->videoCodecBox->addItem(codecName+": "+description, QVariant(codecName));
+    }
+
+    ui->videoQualitySlider->setRange(0, int(QtMedia::VeryHighQuality));
+
+
+    ui->videoResolutionBox->addItem(tr("Default"));
+    QList<QSize> supportedResolutions = mediaRecorder->supportedResolutions();
+    foreach(const QSize &resolution, supportedResolutions) {
+        ui->videoResolutionBox->addItem(QString("%1x%2").arg(resolution.width()).arg(resolution.height()),
+                                        QVariant(resolution));
+    }
+
+    ui->videoFramerateBox->addItem(tr("Default"));
+    QList<qreal> supportedFrameRates = mediaRecorder->supportedFrameRates();
+    qreal rate;
+    foreach(rate, supportedFrameRates) {
+        QString rateString = QString("%1").arg(rate, 0, 'f', 2);
+        ui->videoFramerateBox->addItem(rateString, QVariant(rate));
+    }
+
+    //containers
+    foreach(const QString &format, mediaRecorder->supportedContainers()) {
+        ui->containerFormatBox->addItem(format+":"+mediaRecorder->containerDescription(format),
+                                        QVariant(format));
+    }
+}
+
+Settings::~Settings()
+{
+    delete ui;
+}
+
+void Settings::changeEvent(QEvent *e)
+{
+    QDialog::changeEvent(e);
+    switch (e->type()) {
+    case QEvent::LanguageChange:
+        ui->retranslateUi(this);
+        break;
+    default:
+        break;
+    }
+}
+
+QAudioEncoderSettings Settings::audioSettings() const
+{
+    QAudioEncoderSettings settings = mediaRecorder->audioSettings();
+    settings.setCodec(boxValue(ui->audioCodecBox).toString());
+    settings.setQuality(QtMedia::EncodingQuality(ui->audioQualitySlider->value()));
+    settings.setSampleRate(boxValue(ui->audioSampleRateBox).toInt());
+    return settings;
+}
+
+void Settings::setAudioSettings(const QAudioEncoderSettings &audioSettings)
+{
+    selectComboBoxItem(ui->audioCodecBox, QVariant(audioSettings.codec()));
+    selectComboBoxItem(ui->audioSampleRateBox, QVariant(audioSettings.sampleRate()));
+    ui->audioQualitySlider->setValue(audioSettings.quality());
+}
+
+QVideoEncoderSettings Settings::videoSettings() const
+{
+    QVideoEncoderSettings settings = mediaRecorder->videoSettings();
+    settings.setCodec(boxValue(ui->videoCodecBox).toString());
+    settings.setQuality(QtMedia::EncodingQuality(ui->videoQualitySlider->value()));
+    settings.setResolution(boxValue(ui->videoResolutionBox).toSize());
+    settings.setFrameRate(boxValue(ui->videoFramerateBox).value<qreal>());
+
+    return settings;
+}
+
+void Settings::setVideoSettings(const QVideoEncoderSettings &videoSettings)
+{
+    selectComboBoxItem(ui->videoCodecBox, QVariant(videoSettings.codec()));
+    selectComboBoxItem(ui->videoResolutionBox, QVariant(videoSettings.resolution()));
+    ui->videoQualitySlider->setValue(videoSettings.quality());
+
+    //special case for frame rate
+    for (int i=0; i<ui->videoFramerateBox->count(); i++) {
+        qreal itemRate = ui->videoFramerateBox->itemData(i).value<qreal>();
+        if (qFuzzyCompare(itemRate, videoSettings.frameRate())) {
+            ui->videoFramerateBox->setCurrentIndex(i);
+            break;
+        }
+    }
+}
+
+QString Settings::format() const
+{
+    return boxValue(ui->containerFormatBox).toString();
+}
+
+void Settings::setFormat(const QString &format)
+{
+    selectComboBoxItem(ui->containerFormatBox, QVariant(format));
+}
+
+QVariant Settings::boxValue(const QComboBox *box) const
+{
+    int idx = box->currentIndex();
+    if (idx == -1)
+        return QVariant();
+
+    return box->itemData(idx);
+}
+
+void Settings::selectComboBoxItem(QComboBox *box, const QVariant &value)
+{
+    for (int i=0; i<box->count(); i++) {
+        if (box->itemData(i) == value) {
+            box->setCurrentIndex(i);
+            break;
+        }
+    }
+}