The Bugfree Blog ;-): Binaries for Hardware Accelerated Qt Multimedia Backend on Raspberry Pi (4.4.0)

Monday, April 6, 2015

Binaries for Hardware Accelerated Qt Multimedia Backend on Raspberry Pi (4.4.0)

This is a package containing binaries for PiOmxTextures 4.4.0. The relevant improvements here over 4.3.0 are:

Fixed horizontal tearing effect.
Fixed leaks when starting/stopping and restarting video.
Added support for 3.5mm analog audio output. It is now possible to select which one to use (hdmi, analog or both) by setting a AUDIO_OUT env variable (possible values are both, local and hdmi; default: hdmi).
Fixed garbage at the beginning of the video.
Merged code from omxplayer code base to revision 74aac. This includes update to ffmpeg 2.6.
Other minor fixes and improvements.
Port to Qt 5.4.1.

The package contains:

piomxtextures_pocplayer: sample player which includes tests for animations, loops and commands. Have a look at the sources to understand how it works.
Qt-rasp-5.4.1.tar: the entire tree of Qt 5.4.1 binaries built for Raspbian (firmware
b71d7b6, rpath is set to /usr/local/Qt-rasp-5.4.1).
Qt-rasp-5.4.1_host.tar: the utility to be used on the host when cross-building (built for x86 Kubuntu 13.10).

Current version of the package is 4.4.0: download.

To have a quick look, just place Qt-rasp-5.4.1 in /usr/local into your Pi. Now you can test running qmlvideo, qmlvideofx or piomxtextures_pocplayer from the Qt Multimedia examples. Something similar to this should come up:

To build using the host tools:

Place the Qt libs provided in /usr/local in your Pi filesystem.
Place the sysroot of your Pi into /opt/rpi/sysroot (you should then have Qt libs into /opt/rpi/sysroot/usr/local/Qt-rasp-5.4.1).
Place the host tools in /usr/local.
Place the Linaro toolchain (https://github.com/raspberrypi/tools/tree/master/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian) in /opt/rpi (which means you should have /opt/rpi/gcc-linaro-arm-linux-gnueabihf-raspbian).
You should be done.

I tested on a Ubuntu 15.04 64 bit and the procedure worked, just be sure to use the 64 bit toolchain (in the same position) and add compatibility libs (qmake is a 32 bit binary).

Bye! ;-)

NOTE: Please notice that the provided binaries contain both the gstreamer plugin (the default unaccelerated Qt multimedia plugin) and the PiOmxTexures (POT) plugin. You'll have to ensure that your app uses POT to run and not gstreamer. To avoid confusion, you can simply remove (or move away) the gstreamer plugin from the default path (/usr/local/Qt-rasp-5.4.1/plugins/mediaservice).

77 comments:

Nick DimovApril 7, 2015 at 11:55 PM
Hi, i'm trying to test the provided binaries and i have no luck making it work. (I am going to compile it anyway but I want to check the speed with your bineries and mine compiled version, just to make sure i didnt screw something up). I run the POC player and i get this:

./piomxtextures_pocplayer --loop /home/pi/video.mp4
Unable to query physical screen size, defaulting to 100 dpi.
To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).

(piomxtextures_pocplayer:2188): GStreamer-CRITICAL **: gst_object_ref_sink: assertion 'GST_IS_OBJECT (object)' failed
QDeclarativeAudio::itemChange
QMediaPlayer::onItemChanged

(piomxtextures_pocplayer:2188): GStreamer-CRITICAL **: gst_element_set_state: assertion 'GST_IS_ELEMENT (element)' failed
QDeclarativeAudio::itemChange
QMediaPlayer::onItemChanged
21:48:21.652 INFORMATION: /home/pi/video.mp4 added to the playlist.
21:48:21.656 INFORMATION: Play count: 1.
21:48:21.658 INFORMATION: Opening video file: /home/pi/video.mp4

a white scree and nothing happens. Also when i try to open a file with media - clicking on it produces no result. Any ideas?
Thanks.
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Nick DimovApril 8, 2015 at 12:15 AM
This comment has been removed by the author.
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AtronApril 8, 2015 at 4:04 PM
I'm really impressed how this project has been improved in few month. Thank you very much for making this bigger everyday.
I suggest you make an application as programmer at Digia ;).
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AnonymousApril 20, 2015 at 2:33 PM
Hi. I have a problem with hardware acceleration on my Raspberry Pi
I made everything from this post, but my video files still lagging (about 0-2 fps)

Here is output of the programm:
pi@raspberrypi ~/Desktop/QtApp $ ./piomxtextures_pocplayer
Unable to query physical screen size, defaulting to 100 dpi.
To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
QDeclarativeAudio::itemChange
QMediaPlayer::onItemChanged
QDeclarativeAudio::itemChange
QMediaPlayer::onItemChanged
15:28:52.651 VERBOSE: Can't find extension for .
15:28:52.652 VERBOSE: Can't find extension for image/jp2.
15:28:52.654 VERBOSE: Can't find extension for image/vnd.microsoft.icon.
15:28:52.655 VERBOSE: Can't find extension for image/x-dds.
15:28:52.656 VERBOSE: Can't find extension for image/x-icns.
15:28:52.657 VERBOSE: Can't find extension for image/x-mng.
QDeclarativeAudio::itemChange
QMediaPlayer::onItemChanged
QDeclarativeAudio::itemChange
QMediaPlayer::onItemChanged
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AnonymousApril 24, 2015 at 6:45 PM
Hi,

I am using PiOmxTextures 4.4 (latest release) and OpenMaxIL

Using this video http://www.filedropper.com/bgmovielong

I get some color distortion, like the video is 256 colors (ie the color transition is not smooth, although on desktop it is OK).

Any thoughts?

Thanks!
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Petrovici Nicolae FlorinApril 24, 2015 at 8:24 PM
Only the video.
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pierreApril 30, 2015 at 5:02 PM
Hi,
I could successfully use your binaries to make performance testing before investigating the code, and since you provided the whole Qt 5.4.1 dev tree, I'd like to use it to compile the Qt examples myself.
I installed QtCreator on my Raspberry Pi 2 + Raspbian, but I can't get it to accept Qt 5.4.1 version because it seems to miss qmake binary...
Did you succeed in building directly on the Raspberry or did you always use cross-compilation?
Cheers
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AtronMay 9, 2015 at 1:18 PM
Hi!
Can we use the dynamic link the library?
Build Qt on each raspberry takes to much sd space.
Thanks!
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AtronMay 10, 2015 at 12:16 PM
This comment has been removed by the author.
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UnknownMay 11, 2015 at 10:20 AM
I'm beginner in Qt and I need develop my app with qml hw video rendering. I downloaded archive and test sample. Sample working fine. But I don't understand how to configure host for cross compiling. I'm configure Qt according guide on Qt site (Rpi Cross-compilling guide). Could you explain how include/configure Qt-rasp-5.4.1_host (my OS Linux Mint 17.1 x64)?
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UnknownMay 13, 2015 at 12:04 AM
This comment has been removed by the author.
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UnknownMay 22, 2015 at 2:37 AM
This comment has been removed by the author.
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UnknownMay 22, 2015 at 2:38 AM
This comment has been removed by the author.
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UnknownMay 22, 2015 at 2:39 AM
Thanks a lot for this amazing job you've done, it has been a life saver for me. I'm quite new in c++ programming and I'm trying to develop a player with an overlay transparent web page to run in my rasp 2.

I have been able to compile your source code of the piomxtextures_pocplayer and play around with it successfully. The next step I'm trying to accomplish is to add an overlay with QtWebKit on top of the player and I did this by adding a couple of lines in the main.qml:
> #import QtWebKit 3.0
>Rectangle {
> ...
> WebView {
> url: "http://www.google.com"
> x: 100
> y: 100
> width: 150
> height: 90
> }
> ...
>}

But i get the following WARNING: WARNING: The web process experienced a crash on 'http://www.google.com/'.

And the web page doesn't render, I see the video playing perfectly but no web page.
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UnknownMay 22, 2015 at 2:39 AM
This comment has been removed by the author.
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metRo_June 4, 2015 at 4:40 PM
Hello,

I was trying it but when I click the screen to start the video the app just stop. Qt log: http://pastebin.com/Yp7LWcGJ

Thank you
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metRo_June 5, 2015 at 5:53 PM
I download the last RPi image, burn it to the SD, copy your binaries and deleted the libgstmediapleyer.so. Run qml video but when click to play it it crash for both mp4 and h264 files as you can see here: http://pastebin.com/v1QGJrKC

Tried qmlvideofx but it also doesn't play anything: http://pastebin.com/DkSQReMv

Can you help me?

Thank you
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metRo_June 8, 2015 at 4:01 PM
I set gpu_mem = 128 and it worked for some seconds than I paused the video and when start again it stopped. I had increased that value to the max value and no luck again :(
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AnonymousJuly 11, 2015 at 2:50 PM
Hi Carlon, where am I find PiOmxTextures shared object files for this binaries? ya will I need to compiled PiOmxTextures for this binaries?
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AnonymousAugust 8, 2015 at 7:23 PM
how do i unzip these files when i download lrzip using sudo apt-get install lrzip it install correctly then when i use the command lrzuntar filenam.tar.lrz it says "no such commands exists"
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AnonymousAugust 8, 2015 at 8:34 PM
i have set my default audio device as a usbsoundcard and written a code on qt 5.4.1 windows for reading audioinput from a mic and playing it using qaudiooutput. it works fine on windows once i download qt 5.4 on my pii will i need to make changes to the code i wrote originally?
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AnonymousAugust 8, 2015 at 8:42 PM
i cant even extract the zipped file thats why i asked if i was installing it correctly. i seem to be doing something wrong because it just wont recognize the commands im using. i dont even know if after installing qt on pi the code i wrote will work correctly. i have been looking for a proper way for ages and the only relevant site i found was your blog. but im stuck on suck minor issues ::( please do reply
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AnonymousAugust 9, 2015 at 9:31 AM
I tried installing qt5.0 using this link:
http://wiki.qt.io/RaspberryPi_Beginners_Guide but in this guide the link "git clone git://gitorious.org/cross-compile-tools/cross-compile-tools.git" seems to be broken. So Now I am directly installing qt5.4.1 from the package you have given above.
Shall I be facing any problems as I don't have qt 5.0 installed or will the package you provided be sufficient???
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