1 files changed, 387 insertions, 0 deletions
diff --git a/src/3rdparty/phonon/gstreamer/videowidget.cpp b/src/3rdparty/phonon/gstreamer/videowidget.cpp
new file mode 100644
index 0000000000..efc750a16e
--- /dev/null
+++ b/src/3rdparty/phonon/gstreamer/videowidget.cpp
@@ -0,0 +1,387 @@
+/*  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 <QtCore/QEvent>
+#include <QtGui/QResizeEvent>
+#include <QtGui/QPalette>
+#include <QtGui/QImage>
+#include <QtGui/QPainter>
+#include <QtGui/QBoxLayout>
+#include <QApplication>
+#include <gst/gst.h>
+#include <gst/interfaces/propertyprobe.h>
+#include "mediaobject.h"
+#include "message.h"
+#include "common.h"
+
+#include "glrenderer.h"
+#include "widgetrenderer.h"
+#include "x11renderer.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace Phonon
+{
+namespace Gstreamer
+{
+
+VideoWidget::VideoWidget(Backend *backend, QWidget *parent) :
+    QWidget(parent),
+    MediaNode(backend, VideoSink),
+    m_videoBin(0),
+    m_renderer(0),
+    m_aspectRatio(Phonon::VideoWidget::AspectRatioAuto),
+    m_brightness(0.0),
+    m_hue(0.0),
+    m_contrast(0.0),
+    m_saturation(0.0),
+    m_scaleMode(Phonon::VideoWidget::FitInView),
+    m_videoBalance(0),
+    m_colorspace(0),
+    m_videoplug(0)
+{
+    setupVideoBin();
+}
+
+VideoWidget::~VideoWidget()
+{
+    if (m_videoBin) {
+        gst_element_set_state (m_videoBin, GST_STATE_NULL);
+        gst_object_unref (m_videoBin);
+    }
+
+    if (m_renderer)
+        delete m_renderer;
+}
+
+
+void VideoWidget::setupVideoBin()
+{
+
+    m_renderer = m_backend->deviceManager()->createVideoRenderer(this);
+    GstElement *videoSink = m_renderer->videoSink();
+
+    m_videoBin = gst_bin_new (NULL);
+    Q_ASSERT(m_videoBin);
+    gst_object_ref (GST_OBJECT (m_videoBin)); //Take ownership
+    gst_object_sink (GST_OBJECT (m_videoBin));
+
+    //The videoplug element is the final element before the pluggable videosink
+    m_videoplug = gst_element_factory_make ("identity", NULL);
+
+    //Colorspace ensures that the output of the stream matches the input format accepted by our video sink
+    m_colorspace = gst_element_factory_make ("ffmpegcolorspace", NULL);
+
+    //Video scale is used to prepare the correct aspect ratio and scale.
+    GstElement *videoScale = gst_element_factory_make ("videoscale", NULL);
+
+    //We need a queue to support the tee from parent node
+    GstElement *queue = gst_element_factory_make ("queue", NULL);
+
+    if (queue && m_videoBin && videoScale && m_colorspace && videoSink && m_videoplug) {
+        //Ensure that the bare essentials are prepared
+        gst_bin_add_many (GST_BIN (m_videoBin), queue, m_colorspace, m_videoplug, videoScale, videoSink, (const char*)NULL);
+        bool success = false;
+        //Video balance controls color/sat/hue in the YUV colorspace
+        m_videoBalance = gst_element_factory_make ("videobalance", NULL);
+        if (m_videoBalance) {
+            // For video balance to work we have to first ensure that the video is in YUV colorspace,
+            // then hand it off to the videobalance filter before finally converting it back to RGB.
+            // Hence we nede a videoFilter to convert the colorspace before and after videobalance
+            GstElement *m_colorspace2 = gst_element_factory_make ("ffmpegcolorspace", NULL);
+            gst_bin_add_many(GST_BIN(m_videoBin), m_videoBalance, m_colorspace2, (const char*)NULL);
+            success = gst_element_link_many(queue, m_colorspace, m_videoBalance, m_colorspace2, videoScale, m_videoplug, videoSink, (const char*)NULL);
+        } else {
+            //If video balance is not available, just connect to sink directly
+            success = gst_element_link_many(queue, m_colorspace, videoScale, m_videoplug, videoSink, (const char*)NULL);
+        }
+
+        if (success) {
+            GstPad *videopad = gst_element_get_pad (queue, "sink");
+            gst_element_add_pad (m_videoBin, gst_ghost_pad_new ("sink", videopad));
+            gst_object_unref (videopad);
+            QWidget *parentWidget = qobject_cast<QWidget*>(parent());
+            if (parentWidget)
+                parentWidget->winId();  // Due to some existing issues with alien in 4.4,
+                                        //  we must currently force the creation of a parent widget.
+            m_isValid = true; //initialization ok, accept input
+        }
+    }
+}
+
+void VideoWidget::paintEvent(QPaintEvent *event)
+{
+    Q_ASSERT(m_renderer);
+    m_renderer->handlePaint(event);
+}
+
+void VideoWidget::setVisible(bool val) {
+    Q_ASSERT(m_renderer);
+
+    // Disable overlays for graphics view
+    if (root() && window() && window()->testAttribute(Qt::WA_DontShowOnScreen) && !m_renderer->paintsOnWidget()) {
+        m_backend->logMessage(QString("Widget rendering forced"), Backend::Info, this);
+        GstElement *videoSink = m_renderer->videoSink();
+        Q_ASSERT(videoSink);
+
+        gst_element_set_state (videoSink, GST_STATE_NULL);
+        gst_bin_remove(GST_BIN(m_videoBin), videoSink);
+        delete m_renderer;
+        m_renderer = 0;
+
+        // Use widgetRenderer as a fallback
+        m_renderer = new WidgetRenderer(this);
+        videoSink = m_renderer->videoSink();
+        gst_bin_add(GST_BIN(m_videoBin), videoSink);
+        gst_element_link(m_videoplug, videoSink);
+        gst_element_set_state (videoSink, GST_STATE_PAUSED);
+
+        // Request return to current state
+        root()->invalidateGraph();
+        root()->setState(root()->state());
+    }
+    QWidget::setVisible(val);    
+}
+
+bool VideoWidget::event(QEvent *event)
+{
+    if (m_renderer && m_renderer->eventFilter(event))
+        return true;
+    return QWidget::event(event);
+}
+
+Phonon::VideoWidget::AspectRatio VideoWidget::aspectRatio() const
+{
+    return m_aspectRatio;
+}
+
+QSize VideoWidget::sizeHint() const
+{
+    if (!m_movieSize.isEmpty())
+        return m_movieSize;
+    else
+        return QSize(640, 480);
+}
+
+void VideoWidget::setAspectRatio(Phonon::VideoWidget::AspectRatio aspectRatio)
+{
+    m_aspectRatio = aspectRatio;
+    if (m_renderer)
+        m_renderer->aspectRatioChanged(aspectRatio);
+}
+
+Phonon::VideoWidget::ScaleMode VideoWidget::scaleMode() const
+{
+    return m_scaleMode;
+}
+
+QRect VideoWidget::scaleToAspect(QRect srcRect, int w, int h) const
+{
+    float width = srcRect.width();
+    float height = srcRect.width() * (float(h) / float(w));
+    if (height > srcRect.height()) {
+        height = srcRect.height();
+        width = srcRect.height() * (float(w) / float(h));
+    }
+    return QRect(0, 0, (int)width, (int)height);
+}
+
+/***
+ * Calculates the actual rectangle the movie will be presented with
+ **/
+QRect VideoWidget::calculateDrawFrameRect() const
+{
+    QRect widgetRect = rect();
+    QRect drawFrameRect;
+    // Set m_drawFrameRect to be the size of the smallest possible
+    // rect conforming to the aspect and containing the whole frame:
+    switch (aspectRatio()) {
+
+    case Phonon::VideoWidget::AspectRatioWidget:
+        drawFrameRect = widgetRect;
+        // No more calculations needed.
+        return drawFrameRect;
+
+    case Phonon::VideoWidget::AspectRatio4_3:
+        drawFrameRect = scaleToAspect(widgetRect, 4, 3);
+        break;
+
+    case Phonon::VideoWidget::AspectRatio16_9:
+        drawFrameRect = scaleToAspect(widgetRect, 16, 9);
+        break;
+
+    case Phonon::VideoWidget::AspectRatioAuto:
+    default:
+        drawFrameRect = QRect(0, 0, movieSize().width(), movieSize().height());
+        break;
+    }
+
+    // Scale m_drawFrameRect to fill the widget
+    // without breaking aspect:
+    float widgetWidth = widgetRect.width();
+    float widgetHeight = widgetRect.height();
+    float frameWidth = widgetWidth;
+    float frameHeight = drawFrameRect.height() * float(widgetWidth) / float(drawFrameRect.width());
+
+    switch (scaleMode()) {
+    case Phonon::VideoWidget::ScaleAndCrop:
+        if (frameHeight < widgetHeight) {
+            frameWidth *= float(widgetHeight) / float(frameHeight);
+            frameHeight = widgetHeight;
+        }
+        break;
+    case Phonon::VideoWidget::FitInView:
+    default:
+        if (frameHeight > widgetHeight) {
+            frameWidth *= float(widgetHeight) / float(frameHeight);
+            frameHeight = widgetHeight;
+        }
+        break;
+    }
+    drawFrameRect.setSize(QSize(int(frameWidth), int(frameHeight)));
+    drawFrameRect.moveTo(int((widgetWidth - frameWidth) / 2.0f),
+                           int((widgetHeight - frameHeight) / 2.0f));
+    return drawFrameRect;
+}
+
+void VideoWidget::setScaleMode(Phonon::VideoWidget::ScaleMode scaleMode)
+{
+    m_scaleMode = scaleMode;
+    if (m_renderer)
+        m_renderer->scaleModeChanged(scaleMode);
+}
+
+qreal VideoWidget::brightness() const
+{
+    return m_brightness;
+}
+
+qreal clampedValue(qreal val)
+{
+    if (val > 1.0 )
+        return 1.0;
+    else if (val < -1.0)
+        return -1.0;
+    else return val;
+}
+
+void VideoWidget::setBrightness(qreal newValue)
+{
+    newValue = clampedValue(newValue);
+
+    if (newValue == m_brightness)
+        return;
+
+    m_brightness = newValue;
+
+    if (m_videoBalance)
+        g_object_set(G_OBJECT(m_videoBalance), "brightness", newValue, (const char*)NULL); //gstreamer range is [-1, 1]
+
+}
+
+qreal VideoWidget::contrast() const
+{
+    return m_contrast;
+}
+
+void VideoWidget::setContrast(qreal newValue)
+{
+    newValue = clampedValue(newValue);
+
+    if (newValue == m_contrast)
+        return;
+
+    m_contrast = newValue;
+
+    if (m_videoBalance)
+        g_object_set(G_OBJECT(m_videoBalance), "contrast", (newValue + 1.0), (const char*)NULL); //gstreamer range is [0-2]
+}
+
+qreal VideoWidget::hue() const
+{
+    return m_hue;
+}
+
+void VideoWidget::setHue(qreal newValue)
+{
+    if (newValue == m_hue)
+        return;
+
+    newValue = clampedValue(newValue);
+
+    m_hue = newValue;
+
+    if (m_videoBalance)
+        g_object_set(G_OBJECT(m_videoBalance), "hue", newValue, (const char*)NULL); //gstreamer range is [-1, 1]
+}
+
+qreal VideoWidget::saturation() const
+{
+    return m_saturation;
+}
+
+void VideoWidget::setSaturation(qreal newValue)
+{
+    newValue = clampedValue(newValue);
+
+    if (newValue == m_saturation)
+        return;
+
+    m_saturation = newValue;
+
+    if (m_videoBalance)
+        g_object_set(G_OBJECT(m_videoBalance), "saturation", newValue + 1.0, (const char*)NULL); //gstreamer range is [0, 2]
+}
+
+
+void VideoWidget::setMovieSize(const QSize &size)
+{
+    m_backend->logMessage(QString("New video size %0 x %1").arg(size.width()).arg(size.height()), Backend::Info);
+    if (size == m_movieSize)
+        return;
+    m_movieSize = size;
+    widget()->updateGeometry();
+    widget()->update();
+
+    if (m_renderer)
+        m_renderer->movieSizeChanged(m_movieSize);
+}
+
+void VideoWidget::mediaNodeEvent(const MediaNodeEvent *event)
+{
+    switch (event->type()) {
+    case MediaNodeEvent::VideoSizeChanged: {
+            const QSize *size = static_cast<const QSize*>(event->data());
+            setMovieSize(*size);
+        }
+        break;
+    default:
+        break;
+    }
+
+    // Forward events to renderer
+    if (m_renderer)
+        m_renderer->handleMediaNodeEvent(event);
+}
+
+}
+} //namespace Phonon::Gstreamer
+
+QT_END_NAMESPACE
+
+#include "moc_videowidget.cpp"