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/* This file is part of the KDE project.
Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
This library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2.1 or 3 of the License.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "videowidget.h"
#include "x11renderer.h"
#ifndef Q_WS_QWS
#include <QtGui/QPalette>
#include <QtGui/QApplication>
#include <QtGui/QPainter>
#include <X11/Xlib.h>
#include <gst/gst.h>
#include <gst/interfaces/xoverlay.h>
#include <gst/interfaces/propertyprobe.h>
#include "common.h"
#include "mediaobject.h"
#include "message.h"
QT_BEGIN_NAMESPACE
namespace Phonon
{
namespace Gstreamer
{
class OverlayWidget : public QWidget
{
public:
OverlayWidget(VideoWidget *videoWidget, X11Renderer *renderer) :
QWidget(videoWidget),
m_videoWidget(videoWidget),
m_renderer(renderer) { }
void paintEvent(QPaintEvent *) {
Phonon::State state = m_videoWidget->root() ? m_videoWidget->root()->state() : Phonon::LoadingState;
if (state == Phonon::PlayingState || state == Phonon::PausedState) {
m_renderer->windowExposed();
} else {
QPainter painter(this);
painter.fillRect(m_videoWidget->rect(), m_videoWidget->palette().background());
}
}
private:
VideoWidget *m_videoWidget;
X11Renderer *m_renderer;
};
X11Renderer::X11Renderer(VideoWidget *videoWidget)
: AbstractRenderer(videoWidget)
{
m_renderWidget = new OverlayWidget(videoWidget, this);
videoWidget->backend()->logMessage("Creating X11 overlay renderer");
QPalette palette;
palette.setColor(QPalette::Background, Qt::black);
m_videoWidget->setPalette(palette);
m_videoWidget->setAutoFillBackground(true);
m_renderWidget->setMouseTracking(true);
m_videoSink = createVideoSink();
aspectRatioChanged(videoWidget->aspectRatio());
setOverlay();
}
X11Renderer::~X11Renderer()
{
m_renderWidget->setAttribute(Qt::WA_PaintOnScreen, false);
m_renderWidget->setAttribute(Qt::WA_NoSystemBackground, false);
delete m_renderWidget;
}
GstElement* X11Renderer::createVideoSink()
{
GstElement *videoSink = gst_element_factory_make ("xvimagesink", NULL);
if (videoSink) {
// Check if the xv sink is usable
if (gst_element_set_state(videoSink, GST_STATE_READY) != GST_STATE_CHANGE_SUCCESS) {
gst_object_unref(GST_OBJECT(videoSink));
videoSink = 0;
} else {
// Note that this should not really be neccessary as these are
// default values, though under certain conditions values are retained
// even between application instances. (reproducible on 0.10.16/Gutsy)
g_object_set(G_OBJECT(videoSink), "brightness", 0, (const char*)NULL);
g_object_set(G_OBJECT(videoSink), "contrast", 0, (const char*)NULL);
g_object_set(G_OBJECT(videoSink), "hue", 0, (const char*)NULL);
g_object_set(G_OBJECT(videoSink), "saturation", 0, (const char*)NULL);
}
}
if (!videoSink)
videoSink = gst_element_factory_make ("ximagesink", NULL);
gst_object_ref (GST_OBJECT (videoSink)); //Take ownership
gst_object_sink (GST_OBJECT (videoSink));
return videoSink;
}
void X11Renderer::handleMediaNodeEvent(const MediaNodeEvent *event)
{
switch (event->type()) {
case MediaNodeEvent::SourceChanged:
setOverlay(); // We need to do this whenever the pipeline is reset
break; // otherwise the videosink will open in its own window
default:
break;
}
}
void X11Renderer::aspectRatioChanged(Phonon::VideoWidget::AspectRatio)
{
if (m_renderWidget) {
m_renderWidget->setGeometry(m_videoWidget->calculateDrawFrameRect());
}
}
void X11Renderer::scaleModeChanged(Phonon::VideoWidget::ScaleMode)
{
if (m_renderWidget) {
m_renderWidget->setGeometry(m_videoWidget->calculateDrawFrameRect());
}
}
void X11Renderer::movieSizeChanged(const QSize &movieSize)
{
Q_UNUSED(movieSize);
if (m_renderWidget) {
m_renderWidget->setGeometry(m_videoWidget->calculateDrawFrameRect());
}
}
bool X11Renderer::eventFilter(QEvent *e)
{
if (e->type() == QEvent::Show) {
// Setting these values ensures smooth resizing since it
// will prevent the system from clearing the background
m_renderWidget->setAttribute(Qt::WA_NoSystemBackground, true);
m_renderWidget->setAttribute(Qt::WA_PaintOnScreen, true);
setOverlay();
} else if (e->type() == QEvent::Resize) {
// This is a workaround for missing background repaints
// when reducing window size
m_renderWidget->setGeometry(m_videoWidget->calculateDrawFrameRect());
windowExposed();
}
return false;
}
void X11Renderer::handlePaint(QPaintEvent *)
{
QPainter painter(m_videoWidget);
painter.fillRect(m_videoWidget->rect(), m_videoWidget->palette().background());
}
void X11Renderer::setOverlay()
{
if (m_videoSink && GST_IS_X_OVERLAY(m_videoSink)) {
WId windowId = m_renderWidget->winId();
// Even if we have created a winId at this point, other X applications
// need to be aware of it.
QApplication::syncX();
gst_x_overlay_set_xwindow_id ( GST_X_OVERLAY(m_videoSink) , windowId );
}
windowExposed();
m_overlaySet = true;
}
void X11Renderer::windowExposed()
{
QApplication::syncX();
if (m_videoSink && GST_IS_X_OVERLAY(m_videoSink))
gst_x_overlay_expose(GST_X_OVERLAY(m_videoSink));
}
}
} //namespace Phonon::Gstreamer
QT_END_NAMESPACE
#endif // Q_WS_QWS
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