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Diffstat (limited to 'examples/multimediawidgets/camera/videosettings.cpp')
-rw-r--r-- | examples/multimediawidgets/camera/videosettings.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/examples/multimediawidgets/camera/videosettings.cpp b/examples/multimediawidgets/camera/videosettings.cpp new file mode 100644 index 000000000..2ec880801 --- /dev/null +++ b/examples/multimediawidgets/camera/videosettings.cpp @@ -0,0 +1,191 @@ +/**************************************************************************** +** +** 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 "videosettings.h" +#include "ui_videosettings.h" + +#include <QComboBox> +#include <QDebug> +#include <QMediaRecorder> +#include <QMediaService> + + +VideoSettings::VideoSettings(QMediaRecorder *mediaRecorder, QWidget *parent) : + QDialog(parent), + ui(new Ui::VideoSettingsUi), + mediaRecorder(mediaRecorder) +{ + ui->setupUi(this); + + //audio codecs + ui->audioCodecBox->addItem(tr("Default audio codec"), QVariant(QString())); + 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(QMultimedia::VeryHighQuality)); + + //video codecs + ui->videoCodecBox->addItem(tr("Default video codec"), QVariant(QString())); + foreach (const QString &codecName, mediaRecorder->supportedVideoCodecs()) { + QString description = mediaRecorder->videoCodecDescription(codecName); + ui->videoCodecBox->addItem(codecName+": "+description, QVariant(codecName)); + } + + ui->videoQualitySlider->setRange(0, int(QMultimedia::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 + ui->containerFormatBox->addItem(tr("Default container"), QVariant(QString())); + foreach (const QString &format, mediaRecorder->supportedContainers()) { + ui->containerFormatBox->addItem(format+":"+mediaRecorder->containerDescription(format), + QVariant(format)); + } +} + +VideoSettings::~VideoSettings() +{ + delete ui; +} + +void VideoSettings::changeEvent(QEvent *e) +{ + QDialog::changeEvent(e); + switch (e->type()) { + case QEvent::LanguageChange: + ui->retranslateUi(this); + break; + default: + break; + } +} + +QAudioEncoderSettings VideoSettings::audioSettings() const +{ + QAudioEncoderSettings settings = mediaRecorder->audioSettings(); + settings.setCodec(boxValue(ui->audioCodecBox).toString()); + settings.setQuality(QMultimedia::EncodingQuality(ui->audioQualitySlider->value())); + settings.setSampleRate(boxValue(ui->audioSampleRateBox).toInt()); + return settings; +} + +void VideoSettings::setAudioSettings(const QAudioEncoderSettings &audioSettings) +{ + selectComboBoxItem(ui->audioCodecBox, QVariant(audioSettings.codec())); + selectComboBoxItem(ui->audioSampleRateBox, QVariant(audioSettings.sampleRate())); + ui->audioQualitySlider->setValue(audioSettings.quality()); +} + +QVideoEncoderSettings VideoSettings::videoSettings() const +{ + QVideoEncoderSettings settings = mediaRecorder->videoSettings(); + settings.setCodec(boxValue(ui->videoCodecBox).toString()); + settings.setQuality(QMultimedia::EncodingQuality(ui->videoQualitySlider->value())); + settings.setResolution(boxValue(ui->videoResolutionBox).toSize()); + settings.setFrameRate(boxValue(ui->videoFramerateBox).value<qreal>()); + + return settings; +} + +void VideoSettings::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 VideoSettings::format() const +{ + return boxValue(ui->containerFormatBox).toString(); +} + +void VideoSettings::setFormat(const QString &format) +{ + selectComboBoxItem(ui->containerFormatBox, QVariant(format)); +} + +QVariant VideoSettings::boxValue(const QComboBox *box) const +{ + int idx = box->currentIndex(); + if (idx == -1) + return QVariant(); + + return box->itemData(idx); +} + +void VideoSettings::selectComboBoxItem(QComboBox *box, const QVariant &value) +{ + for (int i = 0; i < box->count(); ++i) { + if (box->itemData(i) == value) { + box->setCurrentIndex(i); + break; + } + } +} |