X11 Error when running embedded mplayer in QWidget

WilczurZnahor · wrote on 16 Sept 2015, 17:56

Hello,
I am trying to run mplayer from qt application. My code is :

void owindow::on_pushButton_clicked()
{
    QStringList arguments;
    ui->widget->show();
    WId winid = ui->widget->winId();
    arguments << "-wid" << QString::number(winid) << "-fs" << "-vo"<<"gl"<<"/root/grafix/mov.mp4";
    QProcess* m_process = new QProcess();
    m_process->setProgram("mplayer");
    m_process->setArguments(arguments);
    qDebug() << arguments;
    m_process->start();
    m_process->waitForFinished();
    QString output(m_process->readAllStandardOutput());
    qDebug() << output;
   delete m_process;

}

When i click the button, there is no movie, but there are

X11 error: BadWindow (invalid Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
....

I also tried to pass -vo x11 but the result is almost the same (there are more errors X11 Bad Window errors)
When i run mplayer with those parameters (without -wid of coure) mplayer runs ok, so i am guessing that problem is with winId.

Any advices?

SGaist · wrote on 16 Sept 2015, 20:35

Hi and welcome to devnet,

Did you try with effectiveWinId ?

WilczurZnahor · 17 Sept 2015, 23:06

Hi and thanks for Your reply.
effectiveWinId returns different number than winId (effectiveWinId - 9 winId -12)
But still there are x11 errors:

("-wid", "9", "-fs", "-vo", "gl", "-slave", "/root/grafix/mov.mp4")
"MPlayer2 UNKNOWN (C) 2000-2012 MPlayer Team
Cannot open file '/root/.mplayer2/input.conf': No such file or directory
Failed to open /root/.mplayer2/input.conf.
Cannot open file '/etc/mplayer2/input.conf': No such file or directory
Failed to open /etc/mplayer2/input.conf.

Playing /root/grafix/mov.mp4.
Detected file format: QuickTime / MOV (libavformat)
[lavf] stream 0: video (h264), -vid 0
[lavf] stream 1: audio (aac), -aid 0, -alang und
Clip info:
major_brand: mp42
minor_version: 0
compatible_brands: isommp42
creation_time: 2015-03-25 07:40:02
Load subtitles in /root/grafix/
X11 error: BadWindow (invalid Window parameter)
X11 error: BadWindow (invalid Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadWindow (invalid Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadWindow (invalid Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadDrawable (invalid Pixmap or Window parameter)
X11 error: BadWindow (invalid Window parameter)
X11 error: BadGC (invalid GC parameter)
X11 error: BadGC (invalid GC parameter)

But maybe i am doing something wrong, because when i print:

WId winid = ui->widget->effectiveWinId();//QString::number((ui->widget->effectiveWinId()))
qDebug() << "winid "<<ui->widget->effectiveWinId() << " " << ui->widget->winId() << " " << winid;
arguments << "-wid" << QString::number((ui->widget->effectiveWinId())) <<"-fs" << "-vo"<<"gl"<< "-slave" <<"/root/grafix/mov.mp4";
QProcess* m_process = new QProcess();
m_process->setProgram("mplayer");
m_process->setArguments(arguments);
qDebug() << arguments;

On the console there is:

winid  9   12   9 
("-wid", "12", "-fs", "-vo", "gl", "-slave", "/root/grafix/mov.mp4")

looks like in arguments there are still number 12, so i passed it directly

  arguments << "-wid" << "9" <<"-fs" << "-vo"<<"gl"<< "-slave" <<"/root/grafix/mov.mp4";

and this argument produced this errors like above.

WilczurZnahor · wrote on 17 Sept 2015, 23:06

I noticed that effectiveWinId is the id of main window where i have qwidget, butI think that this ID which effectiveWinId and WinId returns are not correct IDs for mplayer. I suppose that i have to use X11Info and create display with this, but when i try to add:

QT += x11extras

Qt creator reports that this is unknown module. How to add this module?

SGaist · wrote on 17 Sept 2015, 23:17

How did you install Qt ?

WilczurZnahor · wrote on 17 Sept 2015, 23:53

I downloaded qt-everywhere-opensource-src-5.2.1, configured it, and cross-compiled
This is my config:

   Configure summary

Building for:  devices/linux-bananapi-g++ (arm, CPU features: neon)
Platform notes:

            - Also available for Linux: linux-kcc linux-icc linux-cxx

qmake vars .......... styles += mac fusion windows QT_CFLAGS_DBUS = -I/home/LINUX/projekty/hydroxy/mnt/usr/include/dbus-1.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/lib/dbus-1.0/include   QT_LIBS_DBUS = -ldbus-1   QT_CFLAGS_GLIB = -pthread -I/home/LINUX/projekty/hydroxy/mnt/usr/include/glib-2.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/lib/glib-2.0/include   QT_LIBS_GLIB = -pthread -lgthread-2.0 -lglib-2.0   QT_CFLAGS_QGTKSTYLE = -pthread -I/home/LINUX/projekty/hydroxy/mnt/usr/include/gtk-2.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/lib/gtk-2.0/include -I/home/LINUX/projekty/hydroxy/mnt/usr/include/atk-1.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/cairo -I/home/LINUX/projekty/hydroxy/mnt/usr/include/gdk-pixbuf-2.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/pango-1.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/glib-2.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/lib/glib-2.0/include -I/home/LINUX/projekty/hydroxy/mnt/usr/include/pixman-1 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/freetype2 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/libpng16 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/harfbuzz -I/home/LINUX/projekty/hydroxy/mnt/usr/include/libdrm   QT_LIBS_QGTKSTYLE = -lgobject-2.0 -lglib-2.0   QT_CFLAGS_QGTK2 = -pthread -I/home/LINUX/projekty/hydroxy/mnt/usr/include/gtk-2.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/lib/gtk-2.0/include -I/home/LINUX/projekty/hydroxy/mnt/usr/include/atk-1.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/cairo -I/home/LINUX/projekty/hydroxy/mnt/usr/include/gdk-pixbuf-2.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/pango-1.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/glib-2.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/lib/glib-2.0/include -I/home/LINUX/projekty/hydroxy/mnt/usr/include/pixman-1 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/freetype2 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/libpng16 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/harfbuzz -I/home/LINUX/projekty/hydroxy/mnt/usr/include/libdrm   QT_LIBS_QGTK2 = -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lpango-1.0 -lfontconfig -lgobject-2.0 -lglib-2.0 -lfreetype   QT_CFLAGS_PULSEAUDIO = -D_REENTRANT -I/home/LINUX/projekty/hydroxy/mnt/usr/include/glib-2.0 -I/home/LINUX/projekty/hydroxy/mnt/usr/lib/glib-2.0/include   QT_LIBS_PULSEAUDIO = -lpulse-mainloop-glib -lpulse -lglib-2.0   QMAKE_INCDIR_OPENGL_ES2 =  QMAKE_LIBDIR_OPENGL_ES2 =  QMAKE_LIBS_OPENGL_ES2 =  "-lGLESv2" QMAKE_CFLAGS_FONTCONFIG = -I/home/LINUX/projekty/hydroxy/mnt/usr/include/freetype2 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/libpng16 -I/home/LINUX/projekty/hydroxy/mnt/usr/include/harfbuzz   QMAKE_LIBS_FONTCONFIG = -lfontconfig -lfreetype   QMAKE_INCDIR_LIBUDEV =   QMAKE_LIBS_LIBUDEV = -ludev   DEFINES += QT_NO_XCB QMAKE_CFLAGS_XKBCOMMON =   QMAKE_LIBS_XKBCOMMON = -lxkbcommon   QMAKE_VERSION_XKBCOMMON = 0.5.0 QMAKE_INCDIR_EGL = /home/LINUX/projekty/hydroxy/mnt/usr/include/libdrm   QMAKE_LIBS_EGL = -lEGL   QMAKE_CFLAGS_EGL =   sql-drivers =  sql-plugins =  sqlite qmake switches .........

Build options:
  Configuration .......... accessibility alsa audio-backend c++11 clock-gettime clock-monotonic compile_examples concurrent cross_compile cups dbus egl eglfs evdev eventfd fontconfig full-config getaddrinfo getifaddrs glib gtk2 gtkstyle iconv icu inotify ipv6ifname large-config largefile libudev linuxfb medium-config minimal-config mremap mtdev neon nis no-harfbuzz opengl opengles2 openssl png posix_fallocate pulseaudio qpa qpa reduce_exports reduce_relocations release rpath shared small-config system-freetype system-jpeg system-png system-zlib xlib
  Build parts ............  libs
  Mode ................... release
  Using C++11 ............ yes
  Using PCH .............. no
  Target compiler supports:
    iWMMXt/Neon .......... no/yes

Qt modules and options:
  Qt D-Bus ............... yes (loading dbus-1 at runtime)
  Qt Concurrent .......... yes
  Qt GUI ................. yes
  Qt Widgets ............. yes
  Qt GUI ................. yes
  Qt Widgets ............. yes
  JavaScriptCore JIT ..... yes (To be decided by JavaScriptCore)
  QML debugging .......... yes
  Use system proxies ..... no

Support enabled for:
  Accessibility .......... yes
  ALSA ................... yes
  CUPS ................... yes
  FontConfig ............. yes
  FreeType ............... system
  Iconv .................. yes
  ICU .................... yes
  Image formats:
    GIF .................. yes (plugin, using bundled copy)
    JPEG ................. yes (plugin, using system library)
    PNG .................. yes (in QtGui, using system library)
  Glib ................... yes
  GTK theme .............. yes
  Large File ............. yes
  mtdev .................. yes (system library)
  Networking:
    getaddrinfo .......... yes
    getifaddrs ........... yes
    IPv6 ifname .......... yes
    OpenSSL .............. yes (loading libraries at run-time)
  NIS .................... yes
  OpenGL ................. yes (OpenGL ES 2.x)
  OpenVG ................. no
  PCRE ................... system
  pkg-config ............. yes
  PulseAudio ............. yes
  QPA backends:
    DirectFB ............. no
    EGLFS ................ yes
    KMS .................. no
    LinuxFB .............. yes
    XCB .................. no
  Session management ..... yes
  SQL drivers:
    DB2 .................. no
    InterBase ............ no
    DB2 .................. no
    InterBase ............ no
    MySQL ................ no
    OCI .................. no
    ODBC ................. no
    PostgreSQL ........... no
    SQLite 2 ............. no
    SQLite ............... yes (plugin, using bundled copy)
    TDS .................. no
  udev ................... yes
  xkbcommon .............. yes (system library)
  zlib ................... yes (system library)

NOTE: Qt is using double for qreal on this system. This is binary incompatible against Qt 5.1.
Configure with '-qreal float' to create a build that is binary compatible with 5.1.
    DB2 .................. no
    InterBase ............ no
    MySQL ................ no
    OCI .................. no
    ODBC ................. no
    PostgreSQL ........... no
    SQLite 2 ............. no
    SQLite ............... yes (plugin, using bundled copy)
    TDS .................. no
  udev ................... yes
  xkbcommon .............. yes (system library)
  zlib ................... yes (system library)

NOTE: Qt is using double for qreal on this system. This is binary incompatible against Qt 5.1.
Configure with '-qreal float' to create a build that is binary compatible with 5.1.