Multimedia; Add GStreamer backend

1 files changed, 186 insertions, 0 deletions

diff --git a/src/plugins/mediaservices/gstreamer/qgstreamerserviceplugin.cpp b/src/plugins/mediaservices/gstreamer/qgstreamerserviceplugin.cpp
new file mode 100644
index 0000000..e892e45
--- /dev/null
+++ b/src/plugins/mediaservices/gstreamer/qgstreamerserviceplugin.cpp
@@ -0,0 +1,186 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qstring.h>
+#include <QtCore/qdebug.h>
+#include <QtGui/QIcon>
+#include <QtCore/QDir>
+#include <QtCore/QDebug>
+
+#include "qgstreamerserviceplugin.h"
+
+#ifdef QMEDIA_GSTREAMER_PLAYER
+#include "qgstreamerplayerservice.h"
+#endif
+#ifdef QMEDIA_GSTREAMER_CAPTURE
+#include "qgstreamercaptureservice.h"
+#endif
+
+#include <QtMultimedia/qmediaserviceprovider.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>
+
+
+QT_BEGIN_NAMESPACE
+
+
+QStringList QGstreamerServicePlugin::keys() const
+{
+    return QStringList()
+#ifdef QMEDIA_GSTREAMER_PLAYER
+            << QLatin1String(Q_MEDIASERVICE_MEDIAPLAYER)
+#endif
+#ifdef QMEDIA_GSTREAMER_CAPTURE
+            << QLatin1String(Q_MEDIASERVICE_AUDIOSOURCE)
+            << QLatin1String(Q_MEDIASERVICE_CAMERA)
+#endif
+            ;
+}
+
+QMediaService* QGstreamerServicePlugin::create(const QString &key)
+{
+#ifdef QMEDIA_GSTREAMER_PLAYER
+    if (key == QLatin1String(Q_MEDIASERVICE_MEDIAPLAYER))
+        return new QGstreamerPlayerService;
+#endif
+#ifdef QMEDIA_GSTREAMER_CAPTURE
+    if (key == QLatin1String(Q_MEDIASERVICE_AUDIOSOURCE))
+        return new QGstreamerCaptureService(key);
+
+    if (key == QLatin1String(Q_MEDIASERVICE_CAMERA))
+        return new QGstreamerCaptureService(key);
+#endif
+
+    qDebug() << "unsupported key:" << key;
+    return 0;
+}
+
+void QGstreamerServicePlugin::release(QMediaService *service)
+{
+    delete service;
+}
+
+QList<QByteArray> QGstreamerServicePlugin::devices(const QByteArray &service) const
+{
+    if (service == Q_MEDIASERVICE_CAMERA) {
+        if (m_cameraDevices.isEmpty())
+            updateDevices();
+
+        return m_cameraDevices;
+    }
+
+    return QList<QByteArray>();
+}
+
+QString QGstreamerServicePlugin::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();
+}
+
+void QGstreamerServicePlugin::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);
+    }
+}
+
+Q_EXPORT_PLUGIN2(gstengine, QGstreamerServicePlugin);
+
+QT_END_NAMESPACE