mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-29 11:40:38 +00:00
128 lines
3.8 KiB
C++
128 lines
3.8 KiB
C++
/* GStreamer
|
|
* Copyright (C) <2010> Alexander Bokovoy <ab@samba.org>
|
|
*
|
|
* qtgv-xoverlay: demonstrate overlay handling using qt graphics view
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "qtgv-videooverlay.h"
|
|
|
|
#include <QApplication>
|
|
#include <QTimer>
|
|
|
|
#include <gst/video/videooverlay.h>
|
|
|
|
SinkPipeline::SinkPipeline(QGraphicsView *parent) : QObject(parent)
|
|
{
|
|
GstStateChangeReturn sret;
|
|
|
|
pipeline = gst_pipeline_new ("xvoverlay");
|
|
src = gst_element_factory_make ("videotestsrc", NULL);
|
|
|
|
if ((sink = gst_element_factory_make ("xvimagesink", NULL))) {
|
|
sret = gst_element_set_state (sink, GST_STATE_READY);
|
|
if (sret != GST_STATE_CHANGE_SUCCESS) {
|
|
gst_element_set_state (sink, GST_STATE_NULL);
|
|
gst_object_unref (sink);
|
|
|
|
if ((sink = gst_element_factory_make ("ximagesink", NULL))) {
|
|
sret = gst_element_set_state (sink, GST_STATE_READY);
|
|
if (sret != GST_STATE_CHANGE_SUCCESS) {
|
|
gst_element_set_state (sink, GST_STATE_NULL);
|
|
gst_object_unref (sink);
|
|
|
|
if (strcmp (DEFAULT_VIDEOSINK, "xvimagesink") != 0 &&
|
|
strcmp (DEFAULT_VIDEOSINK, "ximagesink") != 0) {
|
|
|
|
if ((sink = gst_element_factory_make (DEFAULT_VIDEOSINK, NULL))) {
|
|
if (!GST_IS_BIN (sink)) {
|
|
sret = gst_element_set_state (sink, GST_STATE_READY);
|
|
if (sret != GST_STATE_CHANGE_SUCCESS) {
|
|
gst_element_set_state (sink, GST_STATE_NULL);
|
|
gst_object_unref (sink);
|
|
sink = NULL;
|
|
}
|
|
} else {
|
|
gst_object_unref (sink);
|
|
sink = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (sink == NULL)
|
|
g_error ("Couldn't find a working video sink.");
|
|
|
|
gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
|
|
gst_element_link (src, sink);
|
|
xwinid = parent->winId();
|
|
}
|
|
|
|
SinkPipeline::~SinkPipeline()
|
|
{
|
|
gst_element_set_state (pipeline, GST_STATE_NULL);
|
|
gst_object_unref (pipeline);
|
|
}
|
|
|
|
void SinkPipeline::startPipeline()
|
|
{
|
|
GstStateChangeReturn sret;
|
|
|
|
/* we know what the video sink is in this case (xvimagesink), so we can
|
|
* just set it directly here now (instead of waiting for a
|
|
* prepare-window-handle element message in a sync bus handler and setting
|
|
* it there) */
|
|
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (sink), xwinid);
|
|
|
|
sret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
|
|
if (sret == GST_STATE_CHANGE_FAILURE) {
|
|
gst_element_set_state (pipeline, GST_STATE_NULL);
|
|
gst_object_unref (pipeline);
|
|
/* Exit application */
|
|
QTimer::singleShot(0, QApplication::activeWindow(), SLOT(quit()));
|
|
}
|
|
}
|
|
|
|
int main( int argc, char **argv )
|
|
{
|
|
QApplication app(argc, argv);
|
|
|
|
QGraphicsScene scene;
|
|
scene.setSceneRect( -100.0, -100.0, 200.0, 200.0 );
|
|
|
|
QGraphicsView view( &scene );
|
|
view.resize(320, 240);
|
|
view.setWindowTitle("GstXOverlay Qt GraphicsView demo");
|
|
view.show();
|
|
|
|
gst_init (&argc, &argv);
|
|
SinkPipeline pipeline(&view);
|
|
pipeline.startPipeline();
|
|
|
|
int ret = app.exec();
|
|
|
|
view.hide();
|
|
|
|
return ret;
|
|
}
|