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#include "qgstreamervideowidget.h"
#include <QtCore/qcoreevent.h>
#include <QtCore/qdebug.h>
#include <QtGui/qapplication.h>
#include <QtGui/qpainter.h>
#include <X11/Xlib.h>
#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(new QGstreamerVideoWidget)
, m_fullScreen(false)
{
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);
#ifdef Q_WS_MAEMO_5
//the overlay xvideo adapter fails to switch winId,
//use "SGX Textured Video" adapter instead
g_object_set(G_OBJECT(m_videoSink), "device", "1", NULL);
#endif
}
}
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));
}
QGstreamerVideoWidgetControl::~QGstreamerVideoWidgetControl()
{
if (m_videoSink)
gst_object_unref(GST_OBJECT(m_videoSink));
delete m_widget;
}
GstElement *QGstreamerVideoWidgetControl::videoSink()
{
return m_videoSink;
}
bool QGstreamerVideoWidgetControl::eventFilter(QObject *object, QEvent *e)
{
if (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;
}
void QGstreamerVideoWidgetControl::precessNewStream()
{
setOverlay();
QMetaObject::invokeMethod(this, "updateNativeVideoSize", Qt::QueuedConnection);
}
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) {
GstStructure *str;
gint width, height;
if ((str = gst_caps_get_structure (caps, 0))) {
if (gst_structure_get_int (str, "width", &width) && gst_structure_get_int (str, "height", &height)) {
gint aspectNum = 0;
gint aspectDenum = 0;
if (gst_structure_get_fraction(str, "pixel-aspect-ratio", &aspectNum, &aspectDenum)) {
if (aspectDenum > 0)
width = width*aspectNum/aspectDenum;
}
m_widget->setNativeSize(QSize(width, height));
}
}
gst_caps_unref(caps);
}
} else {
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()
{
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 (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 (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 (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 (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 (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 (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 (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 (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);
}
}