qtmultimedia/doc/src/snippets/multimedia-snippets/media.cpp

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/* Media related snippets */
#include <QFile>
#include <QTimer>

#include "qaudiocapturesource.h"
#include "qmediaplaylist.h"
#include "qmediarecorder.h"
#include "qmediaservice.h"
#include "qmediaimageviewer.h"
#include "qmediaimageviewer.h"
#include "qmediaplayercontrol.h"
#include "qmediaplayer.h"
#include "qradiotuner.h"
#include "qvideowidget.h"
#include "qcameraimagecapture.h"

class MediaExample : public QObject {
    Q_OBJECT

    void AudioCaptureSource();
    void MediaControl();
    void MediaImageViewer();
    void MediaPlayer();
    void RadioTuna();
    void MediaRecorder();
    void EncoderSettings();
    void ImageEncoderSettings();

private:
    // Common naming
    QMediaService *mediaService;
    QVideoWidget *videoWidget;
    QWidget *widget;
    QMediaPlayer *player;
    QMediaPlaylist *playlist;
    QMediaContent video;
    QMediaRecorder *recorder;
    QMediaImageViewer *viewer;
    QCameraImageCapture *imageCapture;
    QAudioCaptureSource *audioSource;
    QString fileName;
    QRadioTuner *radio;
    QMediaContent image1;
    QMediaContent image2;
    QMediaContent image3;

    static const int yourRadioStationFrequency = 11;
};

void MediaExample::AudioCaptureSource()
{
    //! [Audio capture source]
    QAudioCaptureSource* audioSource = new QAudioCaptureSource;
    QMediaRecorder* recorder = new QMediaRecorder(audioSource);

    recorder->setOutputLocation(QUrl("test.raw"));
    //! [Audio capture source]

    Q_UNUSED(audioSource);
}


void MediaExample::MediaControl()
{
    {
    //! [Request control]
    QMediaPlayerControl *control = qobject_cast<QMediaPlayerControl *>(
            mediaService->requestControl("com.nokia.Qt.QMediaPlayerControl/1.0"));
    //! [Request control]
    Q_UNUSED(control);
    }

    {
    //! [Request control templated]
    QMediaPlayerControl *control = mediaService->requestControl<QMediaPlayerControl *>();
    //! [Request control templated]
    Q_UNUSED(control);
    }
}


void MediaExample::EncoderSettings()
{
    //! [Audio encoder settings]
    QAudioEncoderSettings audioSettings;
    audioSettings.setCodec("audio/mpeg");
    audioSettings.setChannelCount(2);

    recorder->setEncodingSettings(audioSettings);
    //! [Audio encoder settings]

    //! [Video encoder settings]
    QVideoEncoderSettings videoSettings;
    videoSettings.setCodec("video/mpeg2");
    videoSettings.setResolution(640, 480);

    recorder->setEncodingSettings(audioSettings, videoSettings);
    //! [Video encoder settings]
}

void MediaExample::ImageEncoderSettings()
{
    //! [Image encoder settings]
    QImageEncoderSettings imageSettings;
    imageSettings.setCodec("image/jpeg");
    imageSettings.setResolution(1600, 1200);

    imageCapture->setEncodingSettings(imageSettings);
    //! [Image encoder settings]
}

void MediaExample::MediaImageViewer()
{
    //! [Binding]
    viewer = new QMediaImageViewer(this);

    videoWidget = new QVideoWidget;
    viewer->bind(videoWidget);
    videoWidget->show();
    //! [Binding]

    //! [Playlist]
    playlist = new QMediaPlaylist(this);
    playlist->setPlaybackMode(QMediaPlaylist::Loop);
    playlist->addMedia(image1);
    playlist->addMedia(image2);
    playlist->addMedia(image3);

    viewer->setPlaylist(playlist);
    viewer->setTimeout(5000);
    viewer->play();
    //! [Playlist]
}

void MediaExample::MediaPlayer()
{
    //! [Player]
    player = new QMediaPlayer;
    connect(player, SIGNAL(positionChanged(qint64)), this, SLOT(positionChanged(qint64)));
    player->setMedia(QUrl::fromLocalFile("/Users/me/Music/coolsong.mp3"));
    player->setVolume(50);
    player->play();
    //! [Player]

    //! [Movie playlist]
    playlist = new QMediaPlaylist;
    playlist->addMedia(QUrl("http://example.com/movie1.mp4"));
    playlist->addMedia(QUrl("http://example.com/movie2.mp4"));
    playlist->addMedia(QUrl("http://example.com/movie3.mp4"));
    playlist->setCurrentIndex(1);

    player = new QMediaPlayer;
    player->setPlaylist(playlist);

    videoWidget = new QVideoWidget;
    player->setVideoOutput(videoWidget);
    videoWidget->show();

    player->play();
    //! [Movie playlist]
}

void MediaExample::MediaRecorder()
{
    //! [Media recorder]
    // Audio only recording
    audioSource = new QAudioCaptureSource;
    recorder = new QMediaRecorder(audioSource);

    QAudioEncoderSettings audioSettings;
    audioSettings.setCodec("audio/vorbis");
    audioSettings.setQuality(QtMultimediaKit::HighQuality);

    recorder->setEncodingSettings(audioSettings);

    recorder->setOutputLocation(QUrl::fromLocalFile(fileName));
    recorder->record();
    //! [Media recorder]
}

void MediaExample::RadioTuna()
{
    //! [Radio tuner]
    radio = new QRadioTuner;
    connect(radio, SIGNAL(frequencyChanged(int)), this, SLOT(freqChanged(int)));
    if (radio->isBandSupported(QRadioTuner::FM)) {
        radio->setBand(QRadioTuner::FM);
        radio->setFrequency(yourRadioStationFrequency);
        radio->setVolume(100);
        radio->start();
    }
    //! [Radio tuner]
}