Files
llink/cpp/src/widgets/mediaparticlewidget.cpp
T

93 lines
2.7 KiB
C++

#include "mediaparticlewidget.h"
#include "../models.h"
#include "../networkmanager.h"
#include <QAudioOutput>
#include <QLabel>
#include <QMediaPlayer>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QVBoxLayout>
#include <QVideoWidget>
MediaParticleWidget::MediaParticleWidget(QWidget *parent)
: QWidget(parent)
{
m_nam = new QNetworkAccessManager(this);
// To prevent our network request from fetching bytes in memory
m_nam->setRedirectPolicy(QNetworkRequest::ManualRedirectPolicy);
auto *layout = new QVBoxLayout(this);
layout->setContentsMargins(0, 0, 0, 0);
layout->setSpacing(2);
m_videoWidget = new QVideoWidget();
m_videoWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
layout->addWidget(m_videoWidget);
m_durationLabel = new QLabel();
m_durationLabel->setAlignment(Qt::AlignCenter);
layout->addWidget(m_durationLabel);
m_player = new QMediaPlayer(this);
m_audioOutput = new QAudioOutput(this);
m_player->setAudioOutput(m_audioOutput);
m_player->setVideoOutput(m_videoWidget);
m_player->setLoops(QMediaPlayer::Infinite);
connect(m_player, &QMediaPlayer::durationChanged, this, [this](qint64 duration) {
if (duration > 0)
{
int secs = static_cast<int>(duration / 1000);
int mins = secs / 60;
secs = secs % 60;
m_durationLabel->setText(QString("%1:%2").arg(mins).arg(secs, 2, 10, QChar('0')));
}
});
}
void MediaParticleWidget::setParticle(const Particle *particle)
{
if (!particle) return;
clear();
fetchAndPlay(particle->id);
}
void MediaParticleWidget::clear()
{
m_player->stop();
m_player->setSource(QUrl());
m_durationLabel->setText("");
}
void MediaParticleWidget::fetchAndPlay(const QString &particleId)
{
QNetworkRequest request = NetworkManager::instance().buildRequest("/particles/" + particleId + "/download");
QNetworkReply *reply = m_nam->get(request);
connect(reply, &QNetworkReply::finished, this, [this, reply]() {
reply->deleteLater();
if (reply->error() != QNetworkReply::NoError)
{
qWarning() << "MediaParticleWidget: download request failed:" << reply->errorString();
return;
}
// m_nam uses ManualRedirectPolicy, so the reply stops at the 3xx
// without downloading the media. Extract the pre-signed URL from Location.
QUrl mediaUrl = reply->header(QNetworkRequest::LocationHeader).toUrl();
if (!mediaUrl.isValid())
{
qWarning() << "MediaParticleWidget: no Location header in download response";
return;
}
if (mediaUrl.isRelative())
{
mediaUrl = reply->url().resolved(mediaUrl);
}
m_player->setSource(mediaUrl);
m_player->play();
});
}