Initial copy of QtMultimediaKit.

Comes from original repo, with SHA1: 2c82d5611655e5967f5c5095af50c0991c4378b2
2011-06-29 13:38:46 +10:00
commit 2a34e88c1e
1048 changed files with 206259 additions and 0 deletions
--- a/src/plugins/gstreamer/qgstreamervideorenderer.cpp
+++ b/src/plugins/gstreamer/qgstreamervideorenderer.cpp
@@ -0,0 +1,120 @@
+/****************************************************************************
+**
+** 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 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 "qgstreamervideorenderer.h"
+#include "qvideosurfacegstsink.h"
+#include "qabstractvideosurface.h"
+
+#include <QEvent>
+#include <QApplication>
+#include <QDebug>
+
+#include <gst/gst.h>
+
+QGstreamerVideoRenderer::QGstreamerVideoRenderer(QObject *parent)
+    :QVideoRendererControl(parent),m_videoSink(0), m_surface(0)
+{
+}
+
+QGstreamerVideoRenderer::~QGstreamerVideoRenderer()
+{
+    if (m_videoSink)
+        gst_object_unref(GST_OBJECT(m_videoSink));
+}
+
+GstElement *QGstreamerVideoRenderer::videoSink()
+{
+    if (!m_videoSink && m_surface) {
+        m_videoSink = QVideoSurfaceGstSink::createSink(m_surface);
+        gst_object_ref(GST_OBJECT(m_videoSink)); //Take ownership
+        gst_object_sink(GST_OBJECT(m_videoSink));
+    }
+
+    return reinterpret_cast<GstElement*>(m_videoSink);
+}
+
+
+QAbstractVideoSurface *QGstreamerVideoRenderer::surface() const
+{
+    return m_surface;
+}
+
+void QGstreamerVideoRenderer::setSurface(QAbstractVideoSurface *surface)
+{
+    if (m_surface != surface) {
+        //qDebug() << Q_FUNC_INFO << surface;
+        if (m_videoSink)
+            gst_object_unref(GST_OBJECT(m_videoSink));
+
+        m_videoSink = 0;
+
+        if (m_surface) {
+            disconnect(m_surface, SIGNAL(supportedFormatsChanged()),
+                       this, SLOT(handleFormatChange()));
+        }
+        
+        m_surface = surface;
+
+        if (surface && !m_surface)
+            emit readyChanged(true);
+
+        if (!surface && m_surface)
+            emit readyChanged(false);
+
+        if (m_surface) {
+            connect(m_surface, SIGNAL(supportedFormatsChanged()),
+                    this, SLOT(handleFormatChange()));
+        }
+
+        emit sinkChanged();
+    }
+}
+
+void QGstreamerVideoRenderer::handleFormatChange()
+{
+    //qDebug() << "Supported formats list has changed, reload video output";
+
+    if (m_videoSink)
+        gst_object_unref(GST_OBJECT(m_videoSink));
+
+    m_videoSink = 0;
+    emit sinkChanged();
+}