1 /****************************************************************************
2 **
3 ** Copyright (C) 2017 The Qt Company Ltd.
4 ** Contact: https://www.qt.io/licensing/
5 **
6 ** This file is part of the examples of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:BSD$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and The Qt Company. For licensing terms
14 ** and conditions see https://www.qt.io/terms-conditions. For further
15 ** information use the contact form at https://www.qt.io/contact-us.
16 **
17 ** BSD License Usage
18 ** Alternatively, you may use this file under the terms of the BSD license
19 ** as follows:
20 **
21 ** "Redistribution and use in source and binary forms, with or without
22 ** modification, are permitted provided that the following conditions are
23 ** met:
24 ** * Redistributions of source code must retain the above copyright
25 ** notice, this list of conditions and the following disclaimer.
26 ** * Redistributions in binary form must reproduce the above copyright
27 ** notice, this list of conditions and the following disclaimer in
28 ** the documentation and/or other materials provided with the
29 ** distribution.
30 ** * Neither the name of The Qt Company Ltd nor the names of its
31 ** contributors may be used to endorse or promote products derived
32 ** from this software without specific prior written permission.
33 **
34 **
35 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
45 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
46 **
47 ** $QT_END_LICENSE$
48 **
49 ****************************************************************************/
50
51 #include "videosettings.h"
52 #include "ui_videosettings.h"
53
54 #include <QComboBox>
55 #include <QDebug>
56 #include <QMediaRecorder>
57 #include <QMediaService>
58
59
VideoSettings(QMediaRecorder * mediaRecorder,QWidget * parent)60 VideoSettings::VideoSettings(QMediaRecorder *mediaRecorder, QWidget *parent) :
61 QDialog(parent),
62 ui(new Ui::VideoSettingsUi),
63 mediaRecorder(mediaRecorder)
64 {
65 ui->setupUi(this);
66
67 //audio codecs
68 ui->audioCodecBox->addItem(tr("Default audio codec"), QVariant(QString()));
69 const QStringList supportedAudioCodecs = mediaRecorder->supportedAudioCodecs();
70 for (const QString &codecName : supportedAudioCodecs) {
71 QString description = mediaRecorder->audioCodecDescription(codecName);
72 ui->audioCodecBox->addItem(codecName + ": " + description, QVariant(codecName));
73 }
74
75 //sample rate:
76 const QList<int>supportedAudioSampleRates = mediaRecorder->supportedAudioSampleRates();
77 for (int sampleRate : supportedAudioSampleRates)
78 ui->audioSampleRateBox->addItem(QString::number(sampleRate), QVariant(sampleRate));
79
80 ui->audioQualitySlider->setRange(0, int(QMultimedia::VeryHighQuality));
81
82 //video codecs
83 ui->videoCodecBox->addItem(tr("Default video codec"), QVariant(QString()));
84 const QStringList supportedVideoCodecs = mediaRecorder->supportedVideoCodecs();
85 for (const QString &codecName : supportedVideoCodecs) {
86 QString description = mediaRecorder->videoCodecDescription(codecName);
87 ui->videoCodecBox->addItem(codecName + ": " + description, QVariant(codecName));
88 }
89
90 ui->videoQualitySlider->setRange(0, int(QMultimedia::VeryHighQuality));
91
92
93 ui->videoResolutionBox->addItem(tr("Default"));
94 const QList<QSize> supportedResolutions = mediaRecorder->supportedResolutions();
95 for (const QSize &resolution : supportedResolutions) {
96 ui->videoResolutionBox->addItem(QString("%1x%2").arg(resolution.width()).arg(resolution.height()),
97 QVariant(resolution));
98 }
99
100 ui->videoFramerateBox->addItem(tr("Default"));
101 const QList<qreal> supportedFrameRates = mediaRecorder->supportedFrameRates();
102 for (qreal rate : supportedFrameRates) {
103 QString rateString = QString("%1").arg(rate, 0, 'f', 2);
104 ui->videoFramerateBox->addItem(rateString, QVariant(rate));
105 }
106
107 //containers
108 ui->containerFormatBox->addItem(tr("Default container"), QVariant(QString()));
109 const QStringList formats = mediaRecorder->supportedContainers();
110 for (const QString &format : formats) {
111 ui->containerFormatBox->addItem(format + ": " + mediaRecorder->containerDescription(format),
112 QVariant(format));
113 }
114 }
115
~VideoSettings()116 VideoSettings::~VideoSettings()
117 {
118 delete ui;
119 }
120
changeEvent(QEvent * e)121 void VideoSettings::changeEvent(QEvent *e)
122 {
123 QDialog::changeEvent(e);
124 switch (e->type()) {
125 case QEvent::LanguageChange:
126 ui->retranslateUi(this);
127 break;
128 default:
129 break;
130 }
131 }
132
audioSettings() const133 QAudioEncoderSettings VideoSettings::audioSettings() const
134 {
135 QAudioEncoderSettings settings = mediaRecorder->audioSettings();
136 settings.setCodec(boxValue(ui->audioCodecBox).toString());
137 settings.setQuality(QMultimedia::EncodingQuality(ui->audioQualitySlider->value()));
138 settings.setSampleRate(boxValue(ui->audioSampleRateBox).toInt());
139 return settings;
140 }
141
setAudioSettings(const QAudioEncoderSettings & audioSettings)142 void VideoSettings::setAudioSettings(const QAudioEncoderSettings &audioSettings)
143 {
144 selectComboBoxItem(ui->audioCodecBox, QVariant(audioSettings.codec()));
145 selectComboBoxItem(ui->audioSampleRateBox, QVariant(audioSettings.sampleRate()));
146 ui->audioQualitySlider->setValue(audioSettings.quality());
147 }
148
videoSettings() const149 QVideoEncoderSettings VideoSettings::videoSettings() const
150 {
151 QVideoEncoderSettings settings = mediaRecorder->videoSettings();
152 settings.setCodec(boxValue(ui->videoCodecBox).toString());
153 settings.setQuality(QMultimedia::EncodingQuality(ui->videoQualitySlider->value()));
154 settings.setResolution(boxValue(ui->videoResolutionBox).toSize());
155 settings.setFrameRate(boxValue(ui->videoFramerateBox).value<qreal>());
156
157 return settings;
158 }
159
setVideoSettings(const QVideoEncoderSettings & videoSettings)160 void VideoSettings::setVideoSettings(const QVideoEncoderSettings &videoSettings)
161 {
162 selectComboBoxItem(ui->videoCodecBox, QVariant(videoSettings.codec()));
163 selectComboBoxItem(ui->videoResolutionBox, QVariant(videoSettings.resolution()));
164 ui->videoQualitySlider->setValue(videoSettings.quality());
165
166 //special case for frame rate
167 for (int i = 0; i < ui->videoFramerateBox->count(); ++i) {
168 qreal itemRate = ui->videoFramerateBox->itemData(i).value<qreal>();
169 if (qFuzzyCompare(itemRate, videoSettings.frameRate())) {
170 ui->videoFramerateBox->setCurrentIndex(i);
171 break;
172 }
173 }
174 }
175
format() const176 QString VideoSettings::format() const
177 {
178 return boxValue(ui->containerFormatBox).toString();
179 }
180
setFormat(const QString & format)181 void VideoSettings::setFormat(const QString &format)
182 {
183 selectComboBoxItem(ui->containerFormatBox, QVariant(format));
184 }
185
boxValue(const QComboBox * box) const186 QVariant VideoSettings::boxValue(const QComboBox *box) const
187 {
188 int idx = box->currentIndex();
189 if (idx == -1)
190 return QVariant();
191
192 return box->itemData(idx);
193 }
194
selectComboBoxItem(QComboBox * box,const QVariant & value)195 void VideoSettings::selectComboBoxItem(QComboBox *box, const QVariant &value)
196 {
197 for (int i = 0; i < box->count(); ++i) {
198 if (box->itemData(i) == value) {
199 box->setCurrentIndex(i);
200 break;
201 }
202 }
203 }
204