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Diffstat (limited to 'src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.cpp')
| -rw-r--r-- | src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.cpp | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.cpp b/src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.cpp new file mode 100644 index 000000000..1dc2c4b33 --- /dev/null +++ b/src/plugins/gstreamer/mediacapture/qgstreamercaptureserviceplugin.cpp @@ -0,0 +1,278 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** 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 <QtCore/qstring.h> +#include <QtCore/qdebug.h> +#include <QtCore/QDir> +#include <QtCore/QDebug> + +#include "qgstreamercaptureserviceplugin.h" + +//#define QT_SUPPORTEDMIMETYPES_DEBUG + +#include "qgstreamercaptureservice.h" +#include <private/qgstutils_p.h> + +#include <linux/types.h> +#include <sys/time.h> +#include <sys/ioctl.h> +#include <sys/poll.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <string.h> +#include <stdlib.h> +#include <sys/mman.h> +#include <linux/videodev2.h> +#include <gst/gst.h> + +QMediaService* QGstreamerCaptureServicePlugin::create(const QString &key) +{ + QGstUtils::initializeGst(); + + if (key == QLatin1String(Q_MEDIASERVICE_AUDIOSOURCE)) + return new QGstreamerCaptureService(key); + +#if defined(USE_GSTREAMER_CAMERA) + if (key == QLatin1String(Q_MEDIASERVICE_CAMERA)) + return new QGstreamerCaptureService(key); +#endif + + qWarning() << "Gstreamer capture service plugin: unsupported key:" << key; + return 0; +} + +void QGstreamerCaptureServicePlugin::release(QMediaService *service) +{ + delete service; +} + +#if defined(USE_GSTREAMER_CAMERA) +QMediaServiceProviderHint::Features QGstreamerCaptureServicePlugin::supportedFeatures( + const QByteArray &service) const +{ + if (service == Q_MEDIASERVICE_CAMERA) + return QMediaServiceProviderHint::VideoSurface; + + return QMediaServiceProviderHint::Features(); +} + +QList<QByteArray> QGstreamerCaptureServicePlugin::devices(const QByteArray &service) const +{ + if (service == Q_MEDIASERVICE_CAMERA) { + if (m_cameraDevices.isEmpty()) + updateDevices(); + + return m_cameraDevices; + } + + return QList<QByteArray>(); +} + +QString QGstreamerCaptureServicePlugin::deviceDescription(const QByteArray &service, const QByteArray &device) +{ + if (service == Q_MEDIASERVICE_CAMERA) { + if (m_cameraDevices.isEmpty()) + updateDevices(); + + for (int i=0; i<m_cameraDevices.count(); i++) + if (m_cameraDevices[i] == device) + return m_cameraDescriptions[i]; + } + + return QString(); +} + +QVariant QGstreamerCaptureServicePlugin::deviceProperty(const QByteArray &service, const QByteArray &device, const QByteArray &property) +{ + Q_UNUSED(service); + Q_UNUSED(device); + Q_UNUSED(property); + return QVariant(); +} + +void QGstreamerCaptureServicePlugin::updateDevices() const +{ + m_cameraDevices.clear(); + m_cameraDescriptions.clear(); + + QDir devDir("/dev"); + devDir.setFilter(QDir::System); + + QFileInfoList entries = devDir.entryInfoList(QStringList() << "video*"); + + foreach( const QFileInfo &entryInfo, entries ) { + //qDebug() << "Try" << entryInfo.filePath(); + + int fd = ::open(entryInfo.filePath().toLatin1().constData(), O_RDWR ); + if (fd == -1) + continue; + + bool isCamera = false; + + v4l2_input input; + memset(&input, 0, sizeof(input)); + for (; ::ioctl(fd, VIDIOC_ENUMINPUT, &input) >= 0; ++input.index) { + if(input.type == V4L2_INPUT_TYPE_CAMERA || input.type == 0) { + isCamera = ::ioctl(fd, VIDIOC_S_INPUT, input.index) != 0; + break; + } + } + + if (isCamera) { + // find out its driver "name" + QString name; + struct v4l2_capability vcap; + memset(&vcap, 0, sizeof(struct v4l2_capability)); + + if (ioctl(fd, VIDIOC_QUERYCAP, &vcap) != 0) + name = entryInfo.fileName(); + else + name = QString((const char*)vcap.card); + //qDebug() << "found camera: " << name; + + m_cameraDevices.append(entryInfo.filePath().toLocal8Bit()); + m_cameraDescriptions.append(name); + } + ::close(fd); + } +} +#endif + +QtMultimedia::SupportEstimate QGstreamerCaptureServicePlugin::hasSupport(const QString &mimeType, + const QStringList& codecs) const +{ + if (m_supportedMimeTypeSet.isEmpty()) + updateSupportedMimeTypes(); + + return QGstUtils::hasSupport(mimeType, codecs, m_supportedMimeTypeSet); +} + +void QGstreamerCaptureServicePlugin::updateSupportedMimeTypes() const +{ + //enumerate supported mime types + gst_init(NULL, NULL); + + GList *plugins, *orig_plugins; + orig_plugins = plugins = gst_default_registry_get_plugin_list (); + + while (plugins) { + GList *features, *orig_features; + + GstPlugin *plugin = (GstPlugin *) (plugins->data); + plugins = g_list_next (plugins); + + if (plugin->flags & (1<<1)) //GST_PLUGIN_FLAG_BLACKLISTED + continue; + + orig_features = features = gst_registry_get_feature_list_by_plugin(gst_registry_get_default (), + plugin->desc.name); + while (features) { + if (!G_UNLIKELY(features->data == NULL)) { + GstPluginFeature *feature = GST_PLUGIN_FEATURE(features->data); + if (GST_IS_ELEMENT_FACTORY (feature)) { + GstElementFactory *factory = GST_ELEMENT_FACTORY(gst_plugin_feature_load(feature)); + if (factory + && factory->numpadtemplates > 0 + && (qstrcmp(factory->details.klass, "Codec/Decoder/Audio") == 0 + || qstrcmp(factory->details.klass, "Codec/Decoder/Video") == 0 + || qstrcmp(factory->details.klass, "Codec/Demux") == 0 )) { + const GList *pads = factory->staticpadtemplates; + while (pads) { + GstStaticPadTemplate *padtemplate = (GstStaticPadTemplate*)(pads->data); + pads = g_list_next (pads); + if (padtemplate->direction != GST_PAD_SINK) + continue; + if (padtemplate->static_caps.string) { + GstCaps *caps = gst_static_caps_get(&padtemplate->static_caps); + if (!gst_caps_is_any (caps) && ! gst_caps_is_empty (caps)) { + for (guint i = 0; i < gst_caps_get_size(caps); i++) { + GstStructure *structure = gst_caps_get_structure(caps, i); + QString nameLowcase = QString(gst_structure_get_name (structure)).toLower(); + + m_supportedMimeTypeSet.insert(nameLowcase); + if (nameLowcase.contains("mpeg")) { + //Because mpeg version number is only included in the detail + //description, it is necessary to manually extract this information + //in order to match the mime type of mpeg4. + const GValue *value = gst_structure_get_value(structure, "mpegversion"); + if (value) { + gchar *str = gst_value_serialize (value); + QString versions(str); + QStringList elements = versions.split(QRegExp("\\D+"), QString::SkipEmptyParts); + foreach (const QString &e, elements) + m_supportedMimeTypeSet.insert(nameLowcase + e); + g_free (str); + } + } + } + } + } + } + gst_object_unref (factory); + } + } else if (GST_IS_TYPE_FIND_FACTORY(feature)) { + QString name(gst_plugin_feature_get_name(feature)); + if (name.contains('/')) //filter out any string without '/' which is obviously not a mime type + m_supportedMimeTypeSet.insert(name.toLower()); + } + } + features = g_list_next (features); + } + gst_plugin_feature_list_free (orig_features); + } + gst_plugin_list_free (orig_plugins); + +#if defined QT_SUPPORTEDMIMETYPES_DEBUG + QStringList list = m_supportedMimeTypeSet.toList(); + list.sort(); + if (qgetenv("QT_DEBUG_PLUGINS").toInt() > 0) { + foreach (const QString &type, list) + qDebug() << type; + } +#endif +} + +QStringList QGstreamerCaptureServicePlugin::supportedMimeTypes() const +{ + return QStringList(); +} + |