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videosettings.cpp 7.14 KiB
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/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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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 The Qt Company Ltd nor the names of its
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**     contributors may be used to endorse or promote products derived
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**     from this software without specific prior written permission.
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**
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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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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "videosettings.h"
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#include "ui_videosettings.h"
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#include <QComboBox>
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#include <QDebug>
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#include <QMediaRecorder>
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#include <QMediaService>
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VideoSettings::VideoSettings(QMediaRecorder *mediaRecorder, QWidget *parent) :
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    QDialog(parent),
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    ui(new Ui::VideoSettingsUi),
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    mediaRecorder(mediaRecorder)
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{
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    ui->setupUi(this);
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    //audio codecs
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    ui->audioCodecBox->addItem(tr("Default audio codec"), QVariant(QString()));
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    const QStringList supportedAudioCodecs =  mediaRecorder->supportedAudioCodecs();
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    for (const QString &codecName : supportedAudioCodecs) {
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        QString description = mediaRecorder->audioCodecDescription(codecName);
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        ui->audioCodecBox->addItem(codecName + ": " + description, QVariant(codecName));
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    }
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    //sample rate:
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    const QList<int>supportedAudioSampleRates = mediaRecorder->supportedAudioSampleRates();
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    for (int sampleRate : supportedAudioSampleRates)
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        ui->audioSampleRateBox->addItem(QString::number(sampleRate), QVariant(sampleRate));
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    ui->audioQualitySlider->setRange(0, int(QMultimedia::VeryHighQuality));
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//video codecs ui->videoCodecBox->addItem(tr("Default video codec"), QVariant(QString())); const QStringList supportedVideoCodecs = mediaRecorder->supportedVideoCodecs(); for (const QString &codecName : 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")); const QList<QSize> supportedResolutions = mediaRecorder->supportedResolutions(); for (const QSize &resolution : supportedResolutions) { ui->videoResolutionBox->addItem(QString("%1x%2").arg(resolution.width()).arg(resolution.height()), QVariant(resolution)); } ui->videoFramerateBox->addItem(tr("Default")); const QList<qreal> supportedFrameRates = mediaRecorder->supportedFrameRates(); for (qreal 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())); const QStringList formats = mediaRecorder->supportedContainers(); for (const QString &format : formats) { 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 {
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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; } } }