[Bug 796026] New: qmlglsink test sample (tests/exaples/qt/qml/) invalid display output

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796026

            Bug ID: 796026
           Summary: qmlglsink test sample (tests/exaples/qt/qml/) invalid
                    display output
    Classification: Platform
           Product: GStreamer
           Version: 1.8.3
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: jipe4153 at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

gst-plugins-bad on branch 1.8.3 was build on a 

Tegra X2 platform (L4T 28.1):
Linux tegra-x2 4.4.38-tegra #1 SMP PREEMPT Fri Dec 1 06:08:28 PST 2017 aarch64
aarch64 aarch64 GNU/Linux

The plugins were built to /usr/local/lib/gstreamer-1.0/, to run I needed to do:

# Let gst find plugins (qmlglsink , glupload etc)
export GST_PLUGIN_PATH=/usr/local/lib/gstreamer-1.0/
# Build 
cd gst-plugins-bad
git checkout 1.8.3
./autogen.sh
./configure --prefix=/usr/local/
make
make install 

cd tests/examples/qt/qml
qmake .
make
#Run
./play

The application launches and displays a window with erroneous output (not
testimage expected from videotestsrc element).

Additional info:

I hade issues with the libGL.so version at the linking stage:

...
/usr/lib/gcc/aarch64-linux-gnu/5/../../../aarch64-linux-gnu/libGL.so: undefined
reference to `drmCloseOnce'
/usr/lib/gcc/aarch64-linux-gnu/5/../../../aarch64-linux-gnu/libGL.so: undefined
reference to `drmMap'
/usr/lib/gcc/aarch64-linux-gnu/5/../../../aarch64-linux-gnu/libGL.so: undefined
reference to `drmUnmap'
......

I hence switched to using the tegra specific:
/usr/lib/aarch64-linux-gnu/tegra/libGL.so

# Qt version:
qmake --version
QMake version 3.0
Using Qt version 5.5.1 in /usr/lib/aarch64-linux-gnu

Building output

gst-plugins-bad/tests/examples/qt/qml$ make
g++ -c -pipe -g -pthread -pthread -Wall -W -D_REENTRANT -fPIC
-DGST_USE_UNSTABLE_API -DQT_QUICK_LIB -DQT_WIDGETS_LIB -DQT_GUI_LIB
-DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I../lib -isystem
/usr/include/gstreamer-1.0 -I/usr/lib/aarch64-linux-gnu/gstreamer-1.0/include
-isystem /usr/include/glib-2.0 -I/usr/lib/aarch64-linux-gnu/glib-2.0/include
-isystem /usr/include/aarch64-linux-gnu/qt5 -isystem
/usr/include/aarch64-linux-gnu/qt5/QtQuick -isystem
/usr/include/aarch64-linux-gnu/qt5/QtWidgets -isystem
/usr/include/aarch64-linux-gnu/qt5/QtGui -isystem
/usr/include/aarch64-linux-gnu/qt5/QtQml -isystem
/usr/include/aarch64-linux-gnu/qt5/QtNetwork -isystem
/usr/include/aarch64-linux-gnu/qt5/QtCore -I.
-I/usr/lib/aarch64-linux-gnu/qt5/mkspecs/linux-g++ -o main.o main.cpp
/usr/lib/aarch64-linux-gnu/qt5/bin/rcc -name qml qml.qrc -o qrc_qml.cpp
g++ -c -pipe -g -pthread -pthread -Wall -W -D_REENTRANT -fPIC
-DGST_USE_UNSTABLE_API -DQT_QUICK_LIB -DQT_WIDGETS_LIB -DQT_GUI_LIB
-DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I../lib -isystem
/usr/include/gstreamer-1.0 -I/usr/lib/aarch64-linux-gnu/gstreamer-1.0/include
-isystem /usr/include/glib-2.0 -I/usr/lib/aarch64-linux-gnu/glib-2.0/include
-isystem /usr/include/aarch64-linux-gnu/qt5 -isystem
/usr/include/aarch64-linux-gnu/qt5/QtQuick -isystem
/usr/include/aarch64-linux-gnu/qt5/QtWidgets -isystem
/usr/include/aarch64-linux-gnu/qt5/QtGui -isystem
/usr/include/aarch64-linux-gnu/qt5/QtQml -isystem
/usr/include/aarch64-linux-gnu/qt5/QtNetwork -isystem
/usr/include/aarch64-linux-gnu/qt5/QtCore -I.
-I/usr/lib/aarch64-linux-gnu/qt5/mkspecs/linux-g++ -o qrc_qml.o qrc_qml.cpp
g++  -o play main.o qrc_qml.o   -lgstvideo-1.0 -lgstbase-1.0 -lgstreamer-1.0
-lgobject-2.0 -lglib-2.0 -lQt5Quick -lQt5Widgets -lQt5Gui -lQt5Qml -lQt5Network
-lQt5Core /usr/lib/aarch64-linux-gnu/tegra/libGL.so -lpthread 



Thanks!!

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