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Diffstat (limited to 'src/multimedia/qmediaimageviewerservice.cpp')
| -rw-r--r-- | src/multimedia/qmediaimageviewerservice.cpp | 463 |
1 files changed, 463 insertions, 0 deletions
diff --git a/src/multimedia/qmediaimageviewerservice.cpp b/src/multimedia/qmediaimageviewerservice.cpp new file mode 100644 index 000000000..65de7a81b --- /dev/null +++ b/src/multimedia/qmediaimageviewerservice.cpp @@ -0,0 +1,463 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qmediaimageviewerservice_p.h" + +#include "qmediacontrol_p.h" +#include "qmediaservice_p.h" + +#include <qmediacontent.h> +#include <qmediaresource.h> +#include <qmediaobject_p.h> +#include <qvideorenderercontrol.h> + +#include <QtCore/qdebug.h> + +#include <QtCore/qurl.h> +#include <QtGui/qimagereader.h> + +#include <QtNetwork/qnetworkaccessmanager.h> +#include <QtNetwork/qnetworkreply.h> +#include <QtNetwork/qnetworkrequest.h> + +#include <qabstractvideosurface.h> +#include <qvideosurfaceformat.h> + +QT_BEGIN_NAMESPACE + +class QMediaImageViewerServicePrivate : public QMediaServicePrivate +{ +public: + QMediaImageViewerServicePrivate() + : viewerControl(0) + , rendererControl(0) + , network(0) + , internalNetwork(0) + { + } + + bool load(QIODevice *device); + void clear(); + + QMediaImageViewerControl *viewerControl; + QMediaImageViewerRenderer *rendererControl; + QNetworkAccessManager *network; + QNetworkAccessManager *internalNetwork; + QImage m_image; +}; + + +QMediaImageViewerRenderer::QMediaImageViewerRenderer(QObject *parent) + : QVideoRendererControl(parent) + , m_surface(0) +{ +} + +QMediaImageViewerRenderer::~QMediaImageViewerRenderer() +{ + if (m_surface) + m_surface->stop(); +} + +QAbstractVideoSurface *QMediaImageViewerRenderer::surface() const +{ + return m_surface; +} + +void QMediaImageViewerRenderer::setSurface(QAbstractVideoSurface *surface) +{ + if (m_surface) + m_surface->stop(); + + m_surface = surface; + + if (m_surface && !m_image.isNull()) + showImage(m_image); +} + +void QMediaImageViewerRenderer::showImage(const QImage &image) +{ + m_image = image; + + if (m_surface) { + if (m_image.isNull()) { + m_surface->stop(); + } else { + QVideoSurfaceFormat format( + image.size(), QVideoFrame::pixelFormatFromImageFormat(image.format())); + + if (!m_surface->isFormatSupported(format)) { + foreach (QVideoFrame::PixelFormat pixelFormat, m_surface->supportedPixelFormats()) { + const QImage::Format imageFormat + = QVideoFrame::imageFormatFromPixelFormat(pixelFormat); + + if (imageFormat != QImage::Format_Invalid) { + format = QVideoSurfaceFormat(image.size(), pixelFormat); + + if (m_surface->isFormatSupported(format) && m_surface->start(format)) { + m_image = image.convertToFormat(imageFormat); + + m_surface->present(QVideoFrame(m_image)); + + return; + } + } + } + } else if (m_surface->start(format)) { + m_surface->present(QVideoFrame(image)); + } + } + } +} + +bool QMediaImageViewerServicePrivate::load(QIODevice *device) +{ + QImageReader reader(device); + + if (!reader.canRead()) { + m_image = QImage(); + } else { + m_image = reader.read(); + } + + if (rendererControl) + rendererControl->showImage(m_image); + + return !m_image.isNull(); +} + +void QMediaImageViewerServicePrivate::clear() +{ + m_image = QImage(); + + if (rendererControl) + rendererControl->showImage(m_image); +} + +/*! + \class QMediaImageViewerService + \since 1.0 + \internal +*/ + +/*! +*/ +QMediaImageViewerService::QMediaImageViewerService(QObject *parent) + : QMediaService(*new QMediaImageViewerServicePrivate, parent) +{ + Q_D(QMediaImageViewerService); + + d->viewerControl = new QMediaImageViewerControl(this); +} + +/*! +*/ +QMediaImageViewerService::~QMediaImageViewerService() +{ + Q_D(QMediaImageViewerService); + + delete d->rendererControl; + delete d->viewerControl; +} + +/*! +*/ +QMediaControl *QMediaImageViewerService::requestControl(const char *name) +{ + Q_D(QMediaImageViewerService); + + if (qstrcmp(name, QMediaImageViewerControl_iid) == 0) { + return d->viewerControl; + } else if (qstrcmp(name, QVideoRendererControl_iid) == 0) { + if (!d->rendererControl) { + d->rendererControl = new QMediaImageViewerRenderer; + d->rendererControl->showImage(d->m_image); + + return d->rendererControl; + } + } + return 0; +} + +void QMediaImageViewerService::releaseControl(QMediaControl *control) +{ + Q_D(QMediaImageViewerService); + + if (!control) { + qWarning("QMediaService::releaseControl():" + " Attempted release of null control"); + } else if (control == d->rendererControl) { + delete d->rendererControl; + + d->rendererControl = 0; + } +} + +/*! +*/ +QNetworkAccessManager *QMediaImageViewerService::networkManager() const +{ + Q_D(const QMediaImageViewerService); + + if (!d->network) { + QMediaImageViewerServicePrivate *_d = const_cast<QMediaImageViewerServicePrivate *>(d); + + if (!_d->internalNetwork) + _d->internalNetwork = new QNetworkAccessManager( + const_cast<QMediaImageViewerService *>(this)); + + _d->network = d->internalNetwork; + } + + return d->network; +} + + +void QMediaImageViewerService::setNetworkManager(QNetworkAccessManager *manager) +{ + d_func()->network = manager; +} + +class QMediaImageViewerControlPrivate : public QMediaControlPrivate +{ + Q_DECLARE_NON_CONST_PUBLIC(QMediaImageViewerControl) +public: + QMediaImageViewerControlPrivate() + : service(0) + , getReply(0) + , headReply(0) + , status(QMediaImageViewer::NoMedia) + { + foreach (const QByteArray &format, QImageReader::supportedImageFormats()) { + supportedExtensions.append( + QLatin1Char('.') + QString::fromLatin1(format.data(), format.size())); + } + } + + bool isImageType(const QUrl &url, const QString &mimeType) const; + + void loadImage(); + void cancelRequests(); + + void _q_getFinished(); + void _q_headFinished(); + + QMediaImageViewerService *service; + QNetworkReply *getReply; + QNetworkReply *headReply; + QMediaImageViewer::MediaStatus status; + QMediaContent media; + QMediaResource currentMedia; + QList<QMediaResource> possibleResources; + QStringList supportedExtensions; +}; + +bool QMediaImageViewerControlPrivate::isImageType(const QUrl &url, const QString &mimeType) const +{ + if (!mimeType.isEmpty()) { + return mimeType.startsWith(QLatin1String("image/")) + || mimeType == QLatin1String("application/xml+svg"); + } else if (url.scheme() == QLatin1String("file")) { + QString path = url.path(); + + foreach (const QString &extension, supportedExtensions) { + if (path.endsWith(extension, Qt::CaseInsensitive)) + return true; + } + } + return false; +} + +void QMediaImageViewerControlPrivate::loadImage() +{ + cancelRequests(); + + QMediaImageViewer::MediaStatus currentStatus = status; + status = QMediaImageViewer::InvalidMedia; + + QNetworkAccessManager *network = service->networkManager(); + + while (!possibleResources.isEmpty() && !headReply && !getReply) { + currentMedia = possibleResources.takeFirst(); + + QUrl url = currentMedia.url(); + QString mimeType = currentMedia.mimeType(); + + if (isImageType(url, mimeType)) { + getReply = network->get(QNetworkRequest(url)); + QObject::connect(getReply, SIGNAL(finished()), q_func(), SLOT(_q_getFinished())); + + status = QMediaImageViewer::LoadingMedia; + } else if (mimeType.isEmpty() && url.scheme() != QLatin1String("file")) { + headReply = network->head(QNetworkRequest(currentMedia.url())); + QObject::connect(headReply, SIGNAL(finished()), q_func(), SLOT(_q_headFinished())); + + status = QMediaImageViewer::LoadingMedia; + } + } + + if (status == QMediaImageViewer::InvalidMedia) + currentMedia = QMediaResource(); + + if (status != currentStatus) + emit q_func()->mediaStatusChanged(status); +} + +void QMediaImageViewerControlPrivate::cancelRequests() +{ + if (getReply) { + getReply->abort(); + getReply->deleteLater(); + getReply = 0; + } + + if (headReply) { + headReply->abort(); + headReply->deleteLater(); + headReply = 0; + } +} + +void QMediaImageViewerControlPrivate::_q_getFinished() +{ + if (getReply != q_func()->sender()) + return; + + QImage image; + + if (service->d_func()->load(getReply)) { + possibleResources.clear(); + + status = QMediaImageViewer::LoadedMedia; + + emit q_func()->mediaStatusChanged(status); + } else { + loadImage(); + } +} + +void QMediaImageViewerControlPrivate::_q_headFinished() +{ + if (headReply != q_func()->sender()) + return; + + QString mimeType = headReply->header(QNetworkRequest::ContentTypeHeader) + .toString().section(QLatin1Char(';'), 0, 0); + QUrl url = headReply->url(); + if (url.isEmpty()) + url = headReply->request().url(); + + headReply->deleteLater(); + headReply = 0; + + if (isImageType(url, mimeType) || mimeType.isEmpty()) { + QNetworkAccessManager *network = service->networkManager(); + + getReply = network->get(QNetworkRequest(url)); + + QObject::connect(getReply, SIGNAL(finished()), q_func(), SLOT(_q_getFinished())); + } else { + loadImage(); + } +} + +/*! + \class QMediaImageViewerControl + \internal + \since 1.1 +*/ +QMediaImageViewerControl::QMediaImageViewerControl(QMediaImageViewerService *parent) + : QMediaControl(*new QMediaImageViewerControlPrivate, parent) +{ + Q_D(QMediaImageViewerControl); + + d->service = parent; +} + +/*! +*/ +QMediaImageViewerControl::~QMediaImageViewerControl() +{ + Q_D(QMediaImageViewerControl); + + delete d->getReply; +} + +/*! + \since 1.1 +*/ +QMediaImageViewer::MediaStatus QMediaImageViewerControl::mediaStatus() const +{ + return d_func()->status; +} + +/*! + \fn QMediaImageViewerControl::mediaStatusChanged(QMediaImageViewer::MediaStatus status); + \since 1.1 +*/ + +/*! + \since 1.1 +*/ +void QMediaImageViewerControl::showMedia(const QMediaContent &media) +{ + Q_D(QMediaImageViewerControl); + + d->media = media; + d->currentMedia = QMediaResource(); + d->cancelRequests(); + + if (media.isNull()) { + d->service->d_func()->clear(); + if (d->status != QMediaImageViewer::NoMedia) { + d->status = QMediaImageViewer::NoMedia; + emit mediaStatusChanged(d->status); + } + } else { + d->possibleResources = media.resources(); + d->loadImage(); + } +} + + +#include "moc_qmediaimageviewerservice_p.cpp" +QT_END_NAMESPACE + |