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examples: add video overlay examples for gtk, qt and qt graphics view

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Add simple videotestsrc ! xvimagesink examples using gtk and qt. This patch also
adds all boilerplate to configure for using c++. The qt based examples are
optional like their gtk counterparts.
This commit is contained in:
Stefan Kost 2010-02-16 15:43:26 +02:00
parent bafffd3d98
commit 54094cd9ce
8 changed files with 435 additions and 8 deletions
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25
configure.ac
View file

@ -127,6 +127,14 @@ dnl *** checks for programs ***
dnl find a compiler
AC_PROG_CC
AC_PROG_CXX
dnl determine if c++ is available on this system
AC_CHECK_PROG(HAVE_CXX, $CXX, yes, no)
dnl determine c++ preprocessor
dnl FIXME: do we need this ?
AC_PROG_CXXCPP
dnl check if the compiler supports '-c' and '-o' options
AM_PROG_CC_C_O
@ -273,6 +281,12 @@ PKG_CHECK_MODULES(GTK_X11, gtk+-x11-2.0 >= 2.14.0,
HAVE_GTK_X11=yes, HAVE_GTK_X11=no)
AM_CONDITIONAL(HAVE_GTK_X11, test "x$HAVE_GTK_X11" = "xyes")
dnl QT is optional and only used in examples
PKG_CHECK_MODULES(QT, QtGui >= 4.0, HAVE_QT=yes, HAVE_QT=no)
AM_CONDITIONAL(HAVE_QT, test "x$HAVE_QT" = "xyes")
PKG_CHECK_MODULES(QT, QtGui >= 4.6, HAVE_QT_GV=yes, HAVE_QT_GV=no)
AM_CONDITIONAL(HAVE_QT_GV, test "x$HAVE_QT_GV" = "xyes")
dnl *** set variables based on configure arguments ***
dnl set license and copyright notice
@ -286,6 +300,9 @@ AG_GST_SET_PLUGINDIR
dnl define an ERROR_CFLAGS Makefile variable
AG_GST_SET_ERROR_CFLAGS($GST_GIT)
dnl define an ERROR_CXXFLAGS Makefile variable
AG_GST_SET_ERROR_CXXFLAGS($GST_GIT)
dnl define correct level for debugging messages
AG_GST_SET_LEVEL_DEFAULT($GST_GIT)
@ -757,9 +774,12 @@ else
fi
AC_SUBST(DEPRECATED_CFLAGS)
dnl every flag in GST_OPTION_CFLAGS can be overridden at make time
dnl every flag in GST_OPTION_CFLAGS and GST_OPTION_CXXFLAGS can be overridden
dnl at make time with e.g. make ERROR_CFLAGS=""
GST_OPTION_CFLAGS="\$(ERROR_CFLAGS) \$(DEBUG_CFLAGS) \$(PROFILE_CFLAGS) \$(GCOV_CFLAGS) \$(OPT_CFLAGS) \$(DEPRECATED_CFLAGS)"
GST_OPTION_CXXFLAGS="\$(ERROR_CXXFLAGS) \$(DEBUG_CFLAGS) \$(PROFILE_CFLAGS) \$(GCOV_CFLAGS) \$(OPT_CFLAGS) \$(DEPRECATED_CFLAGS)"
AC_SUBST(GST_OPTION_CFLAGS)
AC_SUBST(GST_OPTION_CXXFLAGS)
dnl our libraries need to be versioned correctly
AC_SUBST(GST_LT_LDFLAGS)
@ -772,8 +792,10 @@ AC_SUBST(GST_PLUGINS_BASE_CFLAGS)
dnl FIXME: do we want to rename to GST_ALL_* ?
dnl add GST_OPTION_CFLAGS, but overridable
GST_CXXFLAGS="$GST_CFLAGS \$(GST_OPTION_CXXFLAGS)"
GST_CFLAGS="$GST_CFLAGS \$(GST_OPTION_CFLAGS)"
AC_SUBST(GST_CFLAGS)
AC_SUBST(GST_CXXFLAGS)
dnl add GCOV libs because libtool strips -fprofile-arcs -ftest-coverage
GST_LIBS="$GST_LIBS \$(GCOV_LIBS)"
AC_SUBST(GST_LIBS)
@ -888,6 +910,7 @@ tests/check/Makefile
tests/examples/Makefile
tests/examples/app/Makefile
tests/examples/dynamic/Makefile
tests/examples/overlay/Makefile
tests/examples/seek/Makefile
tests/examples/volume/Makefile
tests/examples/snapshot/Makefile

64
gst-libs/gst/interfaces/xoverlay.c
View file

@ -59,7 +59,7 @@
* from the video sink element. To solve this issue a #GstMessage is posted on
* the bus to inform the application that it should set the Window identifier
* immediately. Here is an example on how to do that correctly:
* <programlisting>
* |[
* static GstBusSyncReply
* create_window (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
* {
@ -94,7 +94,7 @@
* gst_bus_set_sync_handler (bus, (GstBusSyncHandler) create_window, pipeline);
* ...
* }
* </programlisting>
* ]|
* </para>
* </refsect2>
* <refsect2>
@ -142,7 +142,7 @@
* <refsect2>
* <title>GstXOverlay and Gtk+</title>
* <para>
* <programlisting>
* |[
* #include &lt;gtk/gtk.h&gt;
* #ifdef GDK_WINDOWING_X11
* #include &lt;gdk/gdkx.h&gt; // for GDK_WINDOW_XID
@ -225,13 +225,67 @@
* gst_element_set_state (pipeline, GST_STATE_PLAYING);
* ...
* }
* </programlisting>
* ]|
* </para>
* </refsect2>
* <refsect2>
* <title>GstXOverlay and Qt</title>
* <para>
* FIXME: write me
* |[
* #include &lt;glib.h&gt;
* #include &lt;gst/gst.h&gt;
* #include &lt;gst/interfaces/xoverlay.h&gt;
*
* #include &lt;QApplication&gt;
* #include &lt;QTimer&gt;
* #include &lt;QWidget&gt;
*
* int main(int argc, char *argv[])
* {
* if (!g_thread_supported ())
* g_thread_init (NULL);
*
* gst_init (&argc, &argv);
* QApplication app(argc, argv);
* app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit ()));
*
* // prepare the pipeline
*
* GstElement *pipeline = gst_pipeline_new ("xvoverlay");
* GstElement *src = gst_element_factory_make ("videotestsrc", NULL);
* GstElement *sink = gst_element_factory_make ("xvimagesink", NULL);
* gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
* gst_element_link (src, sink);
*
* // prepare the ui
*
* QWidget window;
* window.resize(320, 240);
* window.show();
*
* WId xwinid = window.winId();
* gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (sink), xwinid);
*
* // run the pipeline
*
* GstStateChangeReturn 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 ret = app.exec();
*
* window.hide();
* gst_element_set_state (pipeline, GST_STATE_NULL);
* gst_object_unref (pipeline);
*
* return ret;
* }
* ]|
* </para>
* </refsect2>
*/

4
tests/examples/Makefile.am
View file

@ -8,6 +8,6 @@ if USE_GIO
GIO_SUBDIRS = gio
endif
SUBDIRS = app $(FT2_SUBDIRS) $(GIO_SUBDIRS) volume dynamic v4l
SUBDIRS = app $(FT2_SUBDIRS) $(GIO_SUBDIRS) volume dynamic v4l overlay
DIST_SUBDIRS = app seek volume dynamic snapshot gio v4l
DIST_SUBDIRS = app seek volume dynamic snapshot gio v4l overlay

47
tests/examples/overlay/Makefile.am Normal file
View file

@ -0,0 +1,47 @@
EXAMPLES =
if USE_X
if HAVE_GTK_X11
EXAMPLES += gtk-xoverlay
gtk_xoverlay_SOURCES = gtk-xoverlay.c
gtk_xoverlay_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS) $(X_CFLAGS) $(GTK_CFLAGS)
gtk_xoverlay_LDADD = $(GST_LIBS) $(X_LIBS) $(LIBM) $(GTK_LIBS) \
$(top_builddir)/gst-libs/gst/interfaces/libgstinterfaces-$(GST_MAJORMINOR).la
endif
if HAVE_QT
EXAMPLES += qt-xoverlay
qt_xoverlay_SOURCES = qt-xoverlay.cpp
qt_xoverlay_CXXFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CXXFLAGS) $(X_CFLAGS) $(QT_CFLAGS)
qt_xoverlay_LDADD = $(GST_LIBS) $(X_LIBS) $(LIBM) $(QT_LIBS) \
$(top_builddir)/gst-libs/gst/interfaces/libgstinterfaces-$(GST_MAJORMINOR).la
endif
if HAVE_QT_GV
EXAMPLES += qtgv-xoverlay
qtgv_xoverlay_SOURCES = qtgv-xoverlay.cpp
qtgv_xoverlay_CXXFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CXXFLAGS) $(X_CFLAGS) $(QT_CFLAGS)
qtgv_xoverlay_LDADD = $(GST_LIBS) $(X_LIBS) $(LIBM) $(QT_LIBS) \
$(top_builddir)/gst-libs/gst/interfaces/libgstinterfaces-$(GST_MAJORMINOR).la
# qt moc support, according to http://qtnode.net/wiki/Qt_with_autotools
nodist_qtgv_xoverlay_SOURCES = moc_qtgv-xoverlay.cpp
moc_%.cpp:%.h
moc $< -o $@
EXTRA_DIST = $(nodist_qtgv_xoverlay_SOURCES:moc_%.cpp=%.h)
CLEANFILES = $(nodist_qtgv_xoverlay_SOURCES)
endif
endif
noinst_PROGRAMS = $(EXAMPLES)

92
tests/examples/overlay/gtk-xoverlay.c Normal file
View file

@ -0,0 +1,92 @@
/* GStreamer
* Copyright (C) <2010> Stefan Kost <ensonic@users.sf.net>
*
* gtk-xoverlay: demonstrate overlay handling using gtk
*
* 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 <glib.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <gst/gst.h>
#include <gst/interfaces/xoverlay.h>
static void
window_closed (GtkWidget * widget, GdkEvent * event, gpointer user_data)
{
GstElement *pipeline = user_data;
gtk_widget_hide_all (widget);
gst_element_set_state (pipeline, GST_STATE_NULL);
gtk_main_quit ();
}
int
main (int argc, char **argv)
{
GtkWidget *window, *video_window;
GstElement *pipeline, *src, *sink;
gulong embed_xid;
GstStateChangeReturn sret;
if (!g_thread_supported ())
g_thread_init (NULL);
gst_init (&argc, &argv);
gtk_init (&argc, &argv);
/* prepare the pipeline */
pipeline = gst_pipeline_new ("xvoverlay");
src = gst_element_factory_make ("videotestsrc", NULL);
sink = gst_element_factory_make ("xvimagesink", NULL);
gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
gst_element_link (src, sink);
/* prepare the ui */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (G_OBJECT (window), "delete-event",
G_CALLBACK (window_closed), (gpointer) pipeline);
gtk_window_set_default_size (GTK_WINDOW (window), 320, 240);
video_window = gtk_drawing_area_new ();
gtk_widget_set_double_buffered (video_window, FALSE);
gtk_container_add (GTK_CONTAINER (window), video_window);
gtk_widget_show_all (window);
gtk_widget_realize (window);
embed_xid = GDK_WINDOW_XID (video_window->window);
gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (sink), embed_xid);
/* run the pipeline */
sret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
if (sret == GST_STATE_CHANGE_FAILURE)
gst_element_set_state (pipeline, GST_STATE_NULL);
else
gtk_main ();
gst_object_unref (pipeline);
return 0;
}

78
tests/examples/overlay/qt-xoverlay.cpp Normal file
View file

@ -0,0 +1,78 @@
/* GStreamer
* Copyright (C) <2010> Stefan Kost <ensonic@users.sf.net>
*
* qt-xoverlay: demonstrate overlay handling using qt
*
* 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 <glib.h>
#include <gst/gst.h>
#include <gst/interfaces/xoverlay.h>
#include <QApplication>
#include <QTimer>
#include <QWidget>
int main(int argc, char *argv[])
{
if (!g_thread_supported ())
g_thread_init (NULL);
gst_init (&argc, &argv);
QApplication app(argc, argv);
app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit ()));
/* prepare the pipeline */
GstElement *pipeline = gst_pipeline_new ("xvoverlay");
GstElement *src = gst_element_factory_make ("videotestsrc", NULL);
GstElement *sink = gst_element_factory_make ("xvimagesink", NULL);
gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
gst_element_link (src, sink);
/* prepare the ui */
QWidget window;
window.resize(320, 240);
window.show();
WId xwinid = window.winId();
gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (sink), xwinid);
/* run the pipeline */
GstStateChangeReturn 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 ret = app.exec();
window.hide();
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
return ret;
}

88
tests/examples/overlay/qtgv-xoverlay.cpp Normal file
View file

@ -0,0 +1,88 @@
/* 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-xoverlay.h"
#include <QApplication>
#include <QTimer>
#include <gst/interfaces/xoverlay.h>
SinkPipeline::SinkPipeline(QGraphicsView *parent) : QObject(parent)
{
pipeline = gst_pipeline_new ("xvoverlay");
src = gst_element_factory_make ("videotestsrc", NULL);
sink = gst_element_factory_make ("xvimagesink", NULL);
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-xwindow-id
* element message in a sync bus handler and setting it there) */
gst_x_overlay_set_xwindow_id (GST_X_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.show();
gst_init (&argc, &argv);
SinkPipeline pipeline(&view);
pipeline.startPipeline();
int ret = app.exec();
view.hide();
return ret;
}

45
tests/examples/overlay/qtgv-xoverlay.h Normal file
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@ -0,0 +1,45 @@
/* 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.
*/
#ifndef QTGV_XOVERLAY_H
#define QTGV_XOVERLAY_H
#include <QGraphicsView>
#include <gst/gst.h>
class SinkPipeline : public QObject
{
Q_OBJECT
public:
SinkPipeline(QGraphicsView *parent = 0);
~SinkPipeline();
void startPipeline();
private:
GstElement *pipeline;
GstElement *sink;
GstElement *src;
WId xwinid;
};
#endif // QTGV_XOVERLAY_H