summaryrefslogtreecommitdiffstats
path: root/src/gsttools/qgstreamervideowidget.cpp
diff options
context:
space:
mode:
authorJonas Rabbe <jonas.rabbe@nokia.com>2012-03-22 11:04:03 +1000
committerQt by Nokia <qt-info@nokia.com>2012-04-27 09:22:09 +0200
commita3b6eabd45b452b98c5b7c45df8a332ad018b8f1 (patch)
tree9f3a3fd7bfd6c514a472ad0103037476da4c6e0f /src/gsttools/qgstreamervideowidget.cpp
parente44bcf0a384c15e7df593ec3f3cee30775f3f1ef (diff)
Split gstreamer plugin into smaller plugins providing fewer services
The gstreamer blob has been split into four plugins: audiodecoder, camerabin, mediacapture, and mediaplayer. Note: camerabin is still disabled because it is untested camerabin2 implementation. A new qmake configuration use_gstreamer_camera has been introduced and is needed for the mediacapture plugin to expose the camera service. This configuration has been disabled by default. Shared functionality has been moved to the internal gsttools library. Change-Id: Ifb2604f440cfa97513d39f5d7978766c88eaec45 Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
Diffstat (limited to 'src/gsttools/qgstreamervideowidget.cpp')
-rw-r--r--src/gsttools/qgstreamervideowidget.cpp352
1 files changed, 352 insertions, 0 deletions
diff --git a/src/gsttools/qgstreamervideowidget.cpp b/src/gsttools/qgstreamervideowidget.cpp
new file mode 100644
index 00000000..9c56a06d
--- /dev/null
+++ b/src/gsttools/qgstreamervideowidget.cpp
@@ -0,0 +1,352 @@
+/****************************************************************************
+**
+** 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 "qgstreamervideowidget_p.h"
+#include <private/qgstutils_p.h>
+
+#include <QtCore/qcoreevent.h>
+#include <QtCore/qdebug.h>
+#include <QtWidgets/qapplication.h>
+#include <QtGui/qpainter.h>
+
+#ifdef Q_WS_X11
+# include <X11/Xlib.h>
+#endif
+#include <gst/gst.h>
+#include <gst/interfaces/xoverlay.h>
+#include <gst/interfaces/propertyprobe.h>
+
+class QGstreamerVideoWidget : public QWidget
+{
+public:
+ QGstreamerVideoWidget(QWidget *parent = 0)
+ :QWidget(parent)
+ {
+ setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
+ QPalette palette;
+ palette.setColor(QPalette::Background, Qt::black);
+ setPalette(palette);
+ }
+
+ virtual ~QGstreamerVideoWidget() {}
+
+ QSize sizeHint() const
+ {
+ return m_nativeSize;
+ }
+
+ void setNativeSize( const QSize &size)
+ {
+ if (size != m_nativeSize) {
+ m_nativeSize = size;
+ if (size.isEmpty())
+ setMinimumSize(0,0);
+ else
+ setMinimumSize(160,120);
+
+ updateGeometry();
+ }
+ }
+
+protected:
+ void paintEvent(QPaintEvent *)
+ {
+ QPainter painter(this);
+ painter.fillRect(rect(), palette().background());
+ }
+
+ QSize m_nativeSize;
+};
+
+QGstreamerVideoWidgetControl::QGstreamerVideoWidgetControl(QObject *parent)
+ : QVideoWidgetControl(parent)
+ , m_videoSink(0)
+ , m_widget(0)
+ , m_fullScreen(false)
+{
+}
+
+QGstreamerVideoWidgetControl::~QGstreamerVideoWidgetControl()
+{
+ if (m_videoSink)
+ gst_object_unref(GST_OBJECT(m_videoSink));
+
+ delete m_widget;
+}
+
+void QGstreamerVideoWidgetControl::createVideoWidget()
+{
+ if (m_widget)
+ return;
+
+ m_widget = new QGstreamerVideoWidget;
+
+ m_widget->installEventFilter(this);
+ m_windowId = m_widget->winId();
+
+ m_videoSink = gst_element_factory_make ("xvimagesink", NULL);
+ if (m_videoSink) {
+ // Check if the xv sink is usable
+ if (gst_element_set_state(m_videoSink, GST_STATE_READY) != GST_STATE_CHANGE_SUCCESS) {
+ gst_object_unref(GST_OBJECT(m_videoSink));
+ m_videoSink = 0;
+ } else {
+ gst_element_set_state(m_videoSink, GST_STATE_NULL);
+
+ g_object_set(G_OBJECT(m_videoSink), "force-aspect-ratio", 1, (const char*)NULL);
+ }
+ }
+
+ if (!m_videoSink)
+ m_videoSink = gst_element_factory_make ("ximagesink", NULL);
+
+ gst_object_ref (GST_OBJECT (m_videoSink)); //Take ownership
+ gst_object_sink (GST_OBJECT (m_videoSink));
+
+
+}
+
+GstElement *QGstreamerVideoWidgetControl::videoSink()
+{
+ createVideoWidget();
+ return m_videoSink;
+}
+
+bool QGstreamerVideoWidgetControl::eventFilter(QObject *object, QEvent *e)
+{
+ if (m_widget && object == m_widget) {
+ if (e->type() == QEvent::ParentChange || e->type() == QEvent::Show) {
+ WId newWId = m_widget->winId();
+ if (newWId != m_windowId) {
+ m_windowId = newWId;
+ // Even if we have created a winId at this point, other X applications
+ // need to be aware of it.
+ QApplication::syncX();
+ setOverlay();
+ }
+ }
+
+ if (e->type() == QEvent::Show) {
+ // Setting these values ensures smooth resizing since it
+ // will prevent the system from clearing the background
+ m_widget->setAttribute(Qt::WA_NoSystemBackground, true);
+ m_widget->setAttribute(Qt::WA_PaintOnScreen, true);
+ } else if (e->type() == QEvent::Resize) {
+ // This is a workaround for missing background repaints
+ // when reducing window size
+ windowExposed();
+ }
+ }
+
+ return false;
+}
+
+bool QGstreamerVideoWidgetControl::processSyncMessage(const QGstreamerMessage &message)
+{
+ GstMessage* gm = message.rawMessage();
+
+ if (gm && (GST_MESSAGE_TYPE(gm) == GST_MESSAGE_ELEMENT) &&
+ gst_structure_has_name(gm->structure, "prepare-xwindow-id")) {
+
+ setOverlay();
+ QMetaObject::invokeMethod(this, "updateNativeVideoSize", Qt::QueuedConnection);
+ return true;
+ }
+
+ return false;
+}
+
+bool QGstreamerVideoWidgetControl::processBusMessage(const QGstreamerMessage &message)
+{
+ GstMessage* gm = message.rawMessage();
+
+ if (GST_MESSAGE_TYPE(gm) == GST_MESSAGE_STATE_CHANGED &&
+ GST_MESSAGE_SRC(gm) == GST_OBJECT_CAST(m_videoSink)) {
+ GstState oldState;
+ GstState newState;
+ gst_message_parse_state_changed(gm, &oldState, &newState, 0);
+
+ if (oldState == GST_STATE_READY && newState == GST_STATE_PAUSED)
+ updateNativeVideoSize();
+ }
+
+ return false;
+}
+
+void QGstreamerVideoWidgetControl::setOverlay()
+{
+ if (m_videoSink && GST_IS_X_OVERLAY(m_videoSink)) {
+ gst_x_overlay_set_xwindow_id(GST_X_OVERLAY(m_videoSink), m_windowId);
+ }
+}
+
+void QGstreamerVideoWidgetControl::updateNativeVideoSize()
+{
+ if (m_videoSink) {
+ //find video native size to update video widget size hint
+ GstPad *pad = gst_element_get_static_pad(m_videoSink,"sink");
+ GstCaps *caps = gst_pad_get_negotiated_caps(pad);
+
+ if (caps) {
+ m_widget->setNativeSize(QGstUtils::capsCorrectedResolution(caps));
+ gst_caps_unref(caps);
+ }
+ } else {
+ if (m_widget)
+ m_widget->setNativeSize(QSize());
+ }
+}
+
+
+void QGstreamerVideoWidgetControl::windowExposed()
+{
+ if (m_videoSink && GST_IS_X_OVERLAY(m_videoSink))
+ gst_x_overlay_expose(GST_X_OVERLAY(m_videoSink));
+}
+
+QWidget *QGstreamerVideoWidgetControl::videoWidget()
+{
+ createVideoWidget();
+ return m_widget;
+}
+
+Qt::AspectRatioMode QGstreamerVideoWidgetControl::aspectRatioMode() const
+{
+ return m_aspectRatioMode;
+}
+
+void QGstreamerVideoWidgetControl::setAspectRatioMode(Qt::AspectRatioMode mode)
+{
+ if (m_videoSink) {
+ g_object_set(G_OBJECT(m_videoSink),
+ "force-aspect-ratio",
+ (mode == Qt::KeepAspectRatio),
+ (const char*)NULL);
+ }
+
+ m_aspectRatioMode = mode;
+}
+
+bool QGstreamerVideoWidgetControl::isFullScreen() const
+{
+ return m_fullScreen;
+}
+
+void QGstreamerVideoWidgetControl::setFullScreen(bool fullScreen)
+{
+ emit fullScreenChanged(m_fullScreen = fullScreen);
+}
+
+int QGstreamerVideoWidgetControl::brightness() const
+{
+ int brightness = 0;
+
+ if (m_videoSink && g_object_class_find_property(G_OBJECT_GET_CLASS(m_videoSink), "brightness"))
+ g_object_get(G_OBJECT(m_videoSink), "brightness", &brightness, NULL);
+
+ return brightness / 10;
+}
+
+void QGstreamerVideoWidgetControl::setBrightness(int brightness)
+{
+ if (m_videoSink && g_object_class_find_property(G_OBJECT_GET_CLASS(m_videoSink), "brightness")) {
+ g_object_set(G_OBJECT(m_videoSink), "brightness", brightness * 10, NULL);
+
+ emit brightnessChanged(brightness);
+ }
+}
+
+int QGstreamerVideoWidgetControl::contrast() const
+{
+ int contrast = 0;
+
+ if (m_videoSink && g_object_class_find_property(G_OBJECT_GET_CLASS(m_videoSink), "contrast"))
+ g_object_get(G_OBJECT(m_videoSink), "contrast", &contrast, NULL);
+
+ return contrast / 10;
+}
+
+void QGstreamerVideoWidgetControl::setContrast(int contrast)
+{
+ if (m_videoSink && g_object_class_find_property(G_OBJECT_GET_CLASS(m_videoSink), "contrast")) {
+ g_object_set(G_OBJECT(m_videoSink), "contrast", contrast * 10, NULL);
+
+ emit contrastChanged(contrast);
+ }
+}
+
+int QGstreamerVideoWidgetControl::hue() const
+{
+ int hue = 0;
+
+ if (m_videoSink && g_object_class_find_property(G_OBJECT_GET_CLASS(m_videoSink), "hue"))
+ g_object_get(G_OBJECT(m_videoSink), "hue", &hue, NULL);
+
+ return hue / 10;
+}
+
+void QGstreamerVideoWidgetControl::setHue(int hue)
+{
+ if (m_videoSink && g_object_class_find_property(G_OBJECT_GET_CLASS(m_videoSink), "hue")) {
+ g_object_set(G_OBJECT(m_videoSink), "hue", hue * 10, NULL);
+
+ emit hueChanged(hue);
+ }
+}
+
+int QGstreamerVideoWidgetControl::saturation() const
+{
+ int saturation = 0;
+
+ if (m_videoSink && g_object_class_find_property(G_OBJECT_GET_CLASS(m_videoSink), "saturation"))
+ g_object_get(G_OBJECT(m_videoSink), "saturation", &saturation, NULL);
+
+ return saturation / 10;
+}
+
+void QGstreamerVideoWidgetControl::setSaturation(int saturation)
+{
+ if (m_videoSink && g_object_class_find_property(G_OBJECT_GET_CLASS(m_videoSink), "saturation")) {
+ g_object_set(G_OBJECT(m_videoSink), "saturation", saturation * 10, NULL);
+
+ emit saturationChanged(saturation);
+ }
+}