Fully Optimised Raspbian Jessie with Accelerated Qt Multimedia Backend (Pi2)

This is an image of Raspbian Jessie ready to test (and use) the Qt Multimedia Backend POT. This image is optimised for maximum performance (see the demos below). This is the current setup:

pi@raspberrypi ~ $ sudo /opt/vc/bin/vcgencmd version
Nov 11 2015 21:31:07 
Copyright (c) 2012 Broadcom
version 54011a8ad59a9ae1c40bd07cddd9bcf90e779b66 (clean) (release)
pi@raspberrypi ~ $ uname -a
Linux raspberrypi 4.1.13-v7+ #826 SMP PREEMPT Fri Nov 13 20:19:03 GMT 2015 armv7l GNU/Linux
pi@raspberrypi ~ $ lsb_release -a
No LSB modules are available.
Distributor ID: Raspbian
Description:    Raspbian GNU/Linux 8.0 (jessie)
Release:        8.0
Codename:       jessie

Download image here.

The image includes:

• Qt 5.5.1 built for armv7 with neon optimisations, including support for touch screens, gstreamer, libinput, X11 (no multimedia), tslib, and Bluetooth/Bluetooth BLE using bluez (complete configuration below). Modules provided include QtWebKit (no multimedia support).
• Dependant libs: evdev, icu (not the one provided by raspbian), mtdev, libts.
• POCPlayer and QML samples to show the performance of the backend and test bugs.
• POT library including ffmpeg 2.7.2.

Everything is built for armv7 including neon optimisations. To quickly test the performance there are a few things you can launch:

/home/pi/piomxtextures_pocplayer --multipleanimtest /home/pi/sintel_trailer_720p.mp4 /home/pi/big_buck_bunny_720p_h264.mov

This is the result you should expect with a proper overclocking:

It will show you a continuous animation while running two 720p videos concurrently. To improve the frame rate of the animations you can also overclock your Pi2 (see below).

Other samples to test the features of the plugin are stored in /home/pi/samples:

/usr/local/Qt-rasp2-5.5.1/bin/qmlscene /home/pi/samples/video_simple.qml file:///home/pi/big_buck_bunny_1080p_h264.mov

Another interesting test is running qmlvideofx example included in the Qt sources. This will show you the perfomance of the effects applied on the video using shaders. You can find an executable in /usr/local/Qt-rasp2-5.5.1/examples/multimedia/video/qmlvideofx/qmlvideofx. This shows approximately what you should expect (the video shows the result on Pi1, Pi2 is just a little better):

Overclocking

The Pi can be overclocked by tuning parameters in /boot/config.txt. I provided a configuration that I find useful:

#force_turbo=1  # Voids Warranty!

#boot_delay=1   # Helps to avoid sdcard corruption when force_turbo is enabled.

#arm_freq=1100

#sdram_freq=450

#core_freq=550

#over_voltage=4

#temp_limit=80  # Will throttle to default clock speed if hit.

In the image this is all disabled. If you intent to enable please keep in mind I don't take responsibility for any consequence. Please refer to the documentation for this procedure.

Have fun! Bye ;-)

Qt Configuration

   Configure summary

Building on:   linux-g++ (x86_64, CPU features: mmx sse sse2)

Building for:  devices/linux-rasp-pi2-g++ (arm, CPU features: neon)

Platform notes:

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

        

qmake vars .......... styles += mac fusion windows QT_CFLAGS_GLIB = -pthread -I/opt/rpi/sysroot/usr/include/glib-2.0 -I/opt/rpi/sysroot/usr/lib/arm-linux-gnueabihf/glib-2.0/include  QT_LIBS_GLIB = -L/opt/rpi/sysroot/usr/lib/arm-linux-gnueabihf -lgthread-2.0 -pthread -lglib-2.0  QT_CFLAGS_PULSEAUDIO = -D_REENTRANT -I/opt/rpi/sysroot/usr/include/glib-2.0 -I/opt/rpi/sysroot/usr/lib/arm-linux-gnueabihf/glib-2.0/include  QT_LIBS_PULSEAUDIO = -L/opt/rpi/sysroot/usr/lib/arm-linux-gnueabihf -lpulse-mainloop-glib -lpulse -lglib-2.0  QMAKE_CFLAGS_FONTCONFIG = -I/opt/rpi/sysroot/usr/include/freetype2  QMAKE_LIBS_FONTCONFIG = -L/opt/rpi/sysroot/usr/lib/arm-linux-gnueabihf -lfontconfig -lfreetype  QMAKE_INCDIR_LIBUDEV =  QMAKE_LIBS_LIBUDEV = -L/opt/rpi/sysroot/usr/lib/arm-linux-gnueabihf -ludev  QMAKE_LIBINPUT_VERSION_MAJOR = 1 QMAKE_LIBINPUT_VERSION_MINOR = 0 QMAKE_INCDIR_LIBINPUT = /opt/rpi/sysroot/home/pi/qtdeps/include  QMAKE_LIBS_LIBINPUT = -L/opt/rpi/sysroot/home/pi/qtdeps/lib -linput  QMAKE_LIBXI_VERSION_MAJOR = 1 QMAKE_LIBXI_VERSION_MINOR = 7 QMAKE_LIBXI_VERSION_PATCH = 4 QMAKE_X11_PREFIX = /usr QMAKE_XKB_CONFIG_ROOT = /usr/share/X11/xkb QMAKE_CFLAGS_XCB =  QMAKE_LIBS_XCB = -L/opt/rpi/sysroot/usr/lib/arm-linux-gnueabihf -lxcb-sync -lxcb-xfixes -lxcb-render -lxcb-randr -lxcb-image -lxcb-shm -lxcb-keysyms -lxcb-icccm -lxcb-shape -lxcb  INCLUDEPATH +=  "/opt/rpi/sysroot/home/pi/qtdeps/include" LIBS +=  -L"/opt/rpi/sysroot/home/pi/qtdeps/lib" sql-drivers =  sql-plugins =  sqlite qmake switches ......... 

Build options:

  Configuration .......... accessibility accessibility-atspi-bridge alsa audio-backend c++11 clock-gettime clock-monotonic compile_examples concurrent cross_compile cups dbus egl eglfs eglfs_brcm enable_new_dtags evdev eventfd fontconfig full-config getaddrinfo getifaddrs glib gstreamer-1.0 harfbuzz iconv icu inotify ipv6ifname large-config largefile libinput libproxy libudev linuxfb medium-config minimal-config mremap mtdev neon nis opengl opengles2 openssl pcre png posix_fallocate pulseaudio qpa qpa reduce_exports release rpath shared small-config system-freetype system-jpeg system-png system-zlib tslib use_gold_linker xcb xcb-glx xcb-plugin xcb-render xcb-xlib xinput2 xkbcommon-qt xlib xrender 

  Build parts ............  libs examples

  Mode ................... release

  Using sanitizer(s)...... none

  Using C++11 ............ yes

  Using gold linker....... yes

  Using new DTAGS ........ yes

  Using PCH .............. no

  Target compiler supports:

    Neon ................. yes

Qt modules and options:

  Qt D-Bus ............... yes (loading dbus-1 at runtime)

  Qt Concurrent .......... yes

  Qt GUI ................. yes

  Qt Widgets ............. yes

  Large File ............. yes

  QML debugging .......... yes

  Use system proxies ..... no

Support enabled for:

  Accessibility .......... yes

  ALSA ................... yes

  CUPS ................... yes

  Evdev .................. yes

  FontConfig ............. yes

  FreeType ............... yes (system library)

  Glib ................... yes

  GStreamer .............. yes (1.0)

  GTK theme .............. no

  HarfBuzz ............... yes (bundled copy)

  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)

  journald ............... no

  libinput................ yes

  mtdev .................. yes (system library)

  Networking: 

    getaddrinfo .......... yes

    getifaddrs ........... yes

    IPv6 ifname .......... yes

    libproxy.............. yes

    OpenSSL .............. yes (loading libraries at run-time)

  NIS .................... yes

  OpenGL / OpenVG: 

    EGL .................. yes

    OpenGL ............... yes (OpenGL ES 2.0+)

    OpenVG ............... no

  PCRE ................... yes (bundled copy)

  pkg-config ............. yes 

  PulseAudio ............. yes

  QPA backends: 

    DirectFB ............. no

    EGLFS ................ yes

      EGLFS i.MX6....... . no

      EGLFS KMS .......... no

      EGLFS Mali ......... no

      EGLFS Raspberry Pi . yes

      EGLFS X11 .......... no

    LinuxFB .............. yes

    XCB .................. yes (system library)

      EGL on X ........... no

      GLX ................ yes

      MIT-SHM ............ yes

      Xcb-Xlib ........... yes

      Xcursor ............ yes (loaded at runtime)

      Xfixes ............. yes (loaded at runtime)

      Xi ................. no

      Xi2 ................ yes

      Xinerama ........... yes (loaded at runtime)

      Xrandr ............. yes (loaded at runtime)

      Xrender ............ yes

      XKB ................ yes

      XShape ............. yes

      XSync .............. yes

      XVideo ............. yes

  Session management ..... yes

  SQL drivers: 

    DB2 .................. no

    InterBase ............ no

    MySQL ................ no

    OCI .................. no

    ODBC ................. no

    PostgreSQL ........... no

    SQLite 2 ............. no

    SQLite ............... yes (plugin, using bundled copy)

    TDS .................. no

  tslib .................. yes

  udev ................... yes

  xkbcommon-x11........... yes (bundled copy, XKB config root: /usr/share/X11/xkb)

  xkbcommon-evdev......... no

  zlib ................... yes (system library)