Set metadata when recording to the camera example

Change-Id: I5a914591f9fe9f09c04da4a1e06b29ac0d92ae00
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

7 files changed, 270 insertions, 2 deletions

diff --git a/examples/multimediawidgets/camera/CMakeLists.txt b/examples/multimediawidgets/camera/CMakeLists.txt
index aa9d42436..de647c647 100644
--- a/examples/multimediawidgets/camera/CMakeLists.txt
+++ b/examples/multimediawidgets/camera/CMakeLists.txt
@@ -26,6 +26,7 @@ qt_add_executable(camera
     imagesettings.cpp imagesettings.h imagesettings.ui
     main.cpp
     videosettings.cpp videosettings.h videosettings.ui
+    metadatadialog.cpp metadatadialog.h
 )
 set_target_properties(camera PROPERTIES
     WIN32_EXECUTABLE TRUE
diff --git a/examples/multimediawidgets/camera/camera.cpp b/examples/multimediawidgets/camera/camera.cpp
index 52e4b9b86..a06391c8f 100644
--- a/examples/multimediawidgets/camera/camera.cpp
+++ b/examples/multimediawidgets/camera/camera.cpp
@@ -52,6 +52,7 @@
 #include "ui_camera.h"
 #include "videosettings.h"
 #include "imagesettings.h"
+#include "metadatadialog.h"
 
 #include <QMediaRecorder>
 #include <QVideoWidget>
@@ -60,6 +61,7 @@
 
 #include <QMessageBox>
 #include <QPalette>
+#include <QImage>
 
 #include <QtWidgets>
 #include <QMediaDeviceManager>
@@ -79,6 +81,8 @@ Camera::Camera() : ui(new Ui::Camera)
     connect(videoDevicesGroup, &QActionGroup::triggered, this, &Camera::updateCameraDevice);
     connect(ui->captureWidget, &QTabWidget::currentChanged, this, &Camera::updateCaptureMode);
 
+    connect(ui->metaDataButton, &QPushButton::clicked, this, &Camera::showMetaDataDialog);
+
     setCamera(QMediaDeviceManager::defaultVideoInput());
 
     qDebug() << "Supported Containers:";
@@ -295,16 +299,19 @@ void Camera::updateRecorderState(QMediaRecorder::State state)
         ui->recordButton->setEnabled(true);
         ui->pauseButton->setEnabled(true);
         ui->stopButton->setEnabled(false);
+        ui->metaDataButton->setEnabled(false);
         break;
     case QMediaRecorder::PausedState:
         ui->recordButton->setEnabled(true);
         ui->pauseButton->setEnabled(false);
         ui->stopButton->setEnabled(true);
+        ui->metaDataButton->setEnabled(true);
         break;
     case QMediaRecorder::RecordingState:
         ui->recordButton->setEnabled(false);
         ui->pauseButton->setEnabled(true);
         ui->stopButton->setEnabled(true);
+        ui->metaDataButton->setEnabled(true);
         break;
     }
 }
@@ -379,3 +386,36 @@ void Camera::updateCameras()
         ui->menuDevices->addAction(videoDeviceAction);
     }
 }
+
+void Camera::showMetaDataDialog()
+{
+    if (!m_metaDataDialog)
+        m_metaDataDialog = new MetaDataDialog(this);
+    m_metaDataDialog->setAttribute(Qt::WA_DeleteOnClose, false);
+    if (m_metaDataDialog->exec() == QDialog::Accepted)
+        saveMetaData();
+}
+
+void Camera::saveMetaData()
+{
+    QMediaMetaData data;
+    for (int i = 0; i < QMediaMetaData::NumMetaData; i++) {
+        QString val = m_metaDataDialog->m_metaDataFields[i]->text();
+        if (!val.isEmpty()) {
+            auto key = static_cast<QMediaMetaData::Key>(i);
+            if (i == QMediaMetaData::CoverArtImage) {
+                QImage coverArt(val);
+                data.insert(key, coverArt);
+            }
+            else if (i == QMediaMetaData::ThumbnailImage) {
+                QImage thumbnail(val);
+                data.insert(key, thumbnail);
+            }
+            else {
+                data.insert(key, val);
+            }
+        }
+    }
+    m_mediaRecorder->setMetaData(data);
+}
+
diff --git a/examples/multimediawidgets/camera/camera.h b/examples/multimediawidgets/camera/camera.h
index 66cc6eee3..7f7aae9a4 100644
--- a/examples/multimediawidgets/camera/camera.h
+++ b/examples/multimediawidgets/camera/camera.h
@@ -55,6 +55,7 @@
 #include <QCameraImageCapture>
 #include <QMediaRecorder>
 #include <QScopedPointer>
+#include <QMediaMetaData>
 
 #include <QMainWindow>
 
@@ -63,6 +64,8 @@ namespace Ui { class Camera; }
 class QActionGroup;
 QT_END_NAMESPACE
 
+class MetaDataDialog;
+
 class Camera : public QMainWindow
 {
     Q_OBJECT
@@ -70,6 +73,9 @@ class Camera : public QMainWindow
 public:
     Camera();
 
+public slots:
+    void saveMetaData();
+
 private slots:
     void setCamera(const QCameraInfo &cameraInfo);
 
@@ -110,6 +116,8 @@ private slots:
 
     void updateCameras();
 
+    void showMetaDataDialog();
+
 protected:
     void keyPressEvent(QKeyEvent *event) override;
     void keyReleaseEvent(QKeyEvent *event) override;
@@ -129,6 +137,8 @@ private:
     bool m_isCapturingImage = false;
     bool m_applicationExiting = false;
     bool m_doImageCapture = true;
+
+    MetaDataDialog *m_metaDataDialog = nullptr;
 };
 
 #endif
diff --git a/examples/multimediawidgets/camera/camera.pro b/examples/multimediawidgets/camera/camera.pro
index 52c511acb..edf40ed9d 100644
--- a/examples/multimediawidgets/camera/camera.pro
+++ b/examples/multimediawidgets/camera/camera.pro
@@ -6,13 +6,15 @@ QT += multimedia multimediawidgets
 HEADERS = \
     camera.h \
     imagesettings.h \
-    videosettings.h
+    videosettings.h \
+    metadatadialog.h
 
 SOURCES = \
     main.cpp \
     camera.cpp \
     imagesettings.cpp \
-    videosettings.cpp
+    videosettings.cpp \
+    metadatadialog.cpp
 
 FORMS += \
     camera.ui \
diff --git a/examples/multimediawidgets/camera/camera.ui b/examples/multimediawidgets/camera/camera.ui
index ba82ba623..e00e9d843 100644
--- a/examples/multimediawidgets/camera/camera.ui
+++ b/examples/multimediawidgets/camera/camera.ui
@@ -129,6 +129,16 @@
           </property>
          </widget>
         </item>
+        <item row="5" column="0">
+          <widget class="QPushButton" name="metaDataButton">
+          <property name="text">
+           <string>Set metadata</string>
+          </property>
+          <property name="checkable">
+           <bool>true</bool>
+          </property>
+         </widget>
+        </item>
        </layout>
       </widget>
      </widget>
diff --git a/examples/multimediawidgets/camera/metadatadialog.cpp b/examples/multimediawidgets/camera/metadatadialog.cpp
new file mode 100644
index 000000000..e0df6ba57
--- /dev/null
+++ b/examples/multimediawidgets/camera/metadatadialog.cpp
@@ -0,0 +1,127 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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 "metadatadialog.h"
+#include "camera.h"
+
+#include <QtWidgets>
+#include <QFormLayout>
+#include <QMediaMetaData>
+
+MetaDataDialog::MetaDataDialog(QWidget *parent)
+    : QDialog(parent)
+{
+    QFormLayout *metaDataLayout = new QFormLayout;
+    for (int key = 0; key < QMediaMetaData::NumMetaData; key++) {
+        QString label = QMediaMetaData::metaDataKeyToString(static_cast<QMediaMetaData::Key>(key));
+        m_metaDataFields[key] = new QLineEdit;
+        if (key == QMediaMetaData::ThumbnailImage) {
+            QPushButton *openThumbnail = new QPushButton(tr("Open"));
+            connect(openThumbnail, &QPushButton::clicked, this, &MetaDataDialog::openThumbnailImage);
+            QHBoxLayout *layout = new QHBoxLayout;
+            layout->addWidget(m_metaDataFields[key]);
+            layout->addWidget(openThumbnail);
+            metaDataLayout->addRow(label, layout);
+        }
+        else if (key == QMediaMetaData::CoverArtImage) {
+            QPushButton *openCoverArt = new QPushButton(tr("Open"));
+            connect(openCoverArt, &QPushButton::clicked, this, &MetaDataDialog::openCoverArtImage);
+            QHBoxLayout *layout = new QHBoxLayout;
+            layout->addWidget(m_metaDataFields[key]);
+            layout->addWidget(openCoverArt);
+            metaDataLayout->addRow(label, layout);
+        }
+        else {
+            if (key == QMediaMetaData::Title)
+                m_metaDataFields[key]->setText(tr("Qt Camera Example"));
+            else if (key == QMediaMetaData::Author)
+                m_metaDataFields[key]->setText(tr("The Qt Company"));
+            else if (key == QMediaMetaData::Year)
+                m_metaDataFields[key]->setText("2020");
+            else if (key == QMediaMetaData::Date)
+                m_metaDataFields[key]->setText(QDate::currentDate().toString());
+            metaDataLayout->addRow(label, m_metaDataFields[key]);
+        }
+    }
+
+    QWidget *viewport = new QWidget;
+    viewport->setLayout(metaDataLayout);
+    QScrollArea *scrollArea = new QScrollArea;
+    scrollArea->setWidget(viewport);
+    QVBoxLayout *dialogLayout = new QVBoxLayout();
+    this->setLayout(dialogLayout);
+    this->layout()->addWidget(scrollArea);
+
+    auto buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok
+                                    | QDialogButtonBox::Cancel);
+    this->layout()->addWidget(buttonBox);
+
+    this->setWindowTitle(tr("Set Metadata"));
+    this->resize(400, 300);
+
+    connect(buttonBox, &QDialogButtonBox::accepted, this, &MetaDataDialog::accept);
+    connect(buttonBox, &QDialogButtonBox::rejected, this, &MetaDataDialog::reject);
+}
+
+void MetaDataDialog::openThumbnailImage()
+{
+    QString fileName = QFileDialog::getOpenFileName(this,
+    tr("Open Image"), QDir::currentPath(), tr("Image Files (*.png *.jpg *.bmp)"));
+    if (!fileName.isEmpty())
+        m_metaDataFields[QMediaMetaData::ThumbnailImage]->setText(fileName);
+}
+
+void MetaDataDialog::openCoverArtImage()
+{
+    QString fileName = QFileDialog::getOpenFileName(this,
+    tr("Open Image"), QDir::currentPath(), tr("Image Files (*.png *.jpg *.bmp)"));
+    if (!fileName.isEmpty())
+        m_metaDataFields[QMediaMetaData::CoverArtImage]->setText(fileName);
+}
diff --git a/examples/multimediawidgets/camera/metadatadialog.h b/examples/multimediawidgets/camera/metadatadialog.h
new file mode 100644
index 000000000..0269e3479
--- /dev/null
+++ b/examples/multimediawidgets/camera/metadatadialog.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef DIALOG_H
+#define DIALOG_H
+
+#include <QDialog>
+#include <QMediaMetaData>
+
+QT_BEGIN_NAMESPACE
+class QLabel;
+class QLineEdit;
+QT_END_NAMESPACE
+
+//! [0]
+class MetaDataDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit MetaDataDialog(QWidget *parent = nullptr);
+
+    QLineEdit *m_metaDataFields[QMediaMetaData::NumMetaData] = {};
+
+private slots:
+    void openThumbnailImage();
+    void openCoverArtImage();
+};
+//! [0]
+
+#endif