Category:QtMediaHub::ST7540: Difference between revisions

h1. Running QtMediaHub on ST7540

Assumptions

1. Qt 4.8.0 is configured, built and installed as per "ST7540":http://wiki.qt.io/ST7540
2. Can run STM’s “Test-Tool” on reference board to test OpenGL ES 2.0 and media playback.
3. "QTDIR" and "PATH" environment variables are set to use Qt 4.8.0 cross compiled and installed for ST7540 in your build terminal

Getting Source

You can get the latest source code from gitorious "https://gitorious.org/qtmediahub":https://gitorious.org/qtmediahub.
You can use "sync-to-head":http://gitorious.org/qtmediahub/qtmediahub/blobs/master/scripts/sync-to-head to update your sources to latest version

Note that we are in the process of moving the git repositories to the qt.io.

Multimedia Playback Support

QMH uses "platform specific media player application" (in ST's case it is the Test-Tool) to have media playback facility.
This is achieved using "out of process integration" which means:-

1. 1. Start "Test-Tool" in background and redirect a FIFO ("/tmp/stapp_fifo2") to "Test-Tool"s STDIN
      ## Redirect "Test-Tool"'s STDOUT and STDERROR to a normal file ("/tmp/stapp_log")
      ## QMH issues commands to "platform specific media player application" to another FIFO ("/tmp/stapp_fifo")
      ## Have an arrangement to transfer data from FIF0 ("/tmp/stapp_fifo") to FIFO ("/tmp/stapp_fifo2")
      ## And QMH collects the feedback by reading "platform specific media player application"'s STDOUT and STDERROR

This is achieved using following shell (commands in a init) script on ST7540 reference board.

<br />cd /root/app<br />mkdir -p /dev/fusion

export MODULES_INSTALL_DIR=/root/app/modules<br />export LD_LIBRARY_PATH=/lib:/usr/lib:/root/app/modules:$LD_LIBRARY_PATH

rm -f /tmp/stapp_fifo /tmp/stapp_fifo2 /tmp/stapp_log<br />mkfifo /tmp/stapp_fifo<br />mkfifo /tmp/stapp_fifo2

source /root/initapp.sh &amp;&amp; cd /root/app/ &amp;&amp; ./bsptestapp_dvb </tmp/stapp_fifo2 >/tmp/stapp_log 2>&amp;1 &amp;<br />sleep 30<br />while [ 1 ] ; do cat /tmp/stapp_fifo >/tmp/stapp_fifo2 ; done &amp;<br />sleep 30<br />echo '' > /tmp/stapp_fifo<br />sleep 30<br />

ST7540 specific media control integration can be found in files "mediaplayerST7540.h":http://gitorious.org/qtmediahub/qtmediahub-core/blobs/master/src/mediaplayer/mediaplayerST7540.h and "mediaplayerST7540.cpp":http://gitorious.org/qtmediahub/qtmediahub-core/blobs/master/src/mediaplayer/mediaplayerST7540.cpp

Configuring

Use " -media-backend ST7540" configure option to enable multimedia playback capability of QMH

<br />cd /path/to/qtmediahub/<br />/path/to/qtmediahub/configure -media-backend ST7540<br />

Building

Build QMH as follows

<br />cd /path/to/qtmediahub/<br />make<br />

Installing

As installation of QMH on ST7540 reference board copy entire "qtmediahub" directory so that its path is exactly same as that on build machine.

Running QMH on Qt 4.8 (QWS)

Setup QTDIR, QWS_KEYBOARD, QWS_MOUSE_PROTO and LD_LIBRARY_PATH environment variables as follows

<br />export QTDIR=/path/to/installed/qt-everywhere-opensource-src-4.8.0/<br />export QWS_KEYBOARD="LinuxInput:/dev/input/event0" //Use appropriate device node<br />export QWS_MOUSE_PROTO="LinuxInput:/dev/input/event1" //Use appropriate device node<br />export LD_LIBRARY_PATH=${QTDIR}/lib/:${LD_LIBRARY_PATH}<br />export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:"/path/to/qtmediahub/qtmediahub-core/hub/lib/"<br />

Rum QMH as follows to use OpenGL ES 2.0

<br />cd /path/to/qtmediahub/<br />/path/to/qtmediahub/qtmediahub-core/hub/bin/qtmediahub -qws -keyboard -mouse -display eglnullws:size=1280x720 -skin=confluence -overlayMode=true -opengl-usage=true -opengl-viewport=true -opengl-format-hack=false<br />

Rum QMH as follows to use DirectFB

<br />cd /path/to/qtmediahub/<br />/path/to/qtmediahub/qtmediahub-core/hub/bin/qtmediahub -qws -display directfb -skin=delphin -overlayMode=true -opengl-usage=false -opengl-viewport=false -opengl-format-hack=false<br />

Rum QMH as follows to use Linux Frame Buffer

<br />cd /path/to/qtmediahub/<br />/path/to/qtmediahub/qtmediahub-core/hub/bin/qtmediahub -qws -keyboard -mouse -display linuxfb -skin=confluence— -overlayMode=true -opengl-usage=false -opengl-viewport=false -opengl-format-hack=false<br />