Topics tagged with i.mx6

Hindi and Gujarati font support for Qt5 on i.MX6 (Yocto Linux 4.1.15)

Ajith_P_V — Invalid Date

@Cleiton-Bueno Thank you very much for providing me more information on the Yocto language selection.

QT 5.9 for i.MX6Q and Integrity RTOS build error - unrecognised command line option »-std=c++11«

jsulm — Invalid Date

@Mahesh-Kumar-Kodanda said in QT 5.9 for i.MX6Q and Integrity RTOS build error - unrecognised command line option »-std=c++11«: cross compile tool chain For which device? You already use one- why do you ask me to provide one? A cross compile tool chain is not specific to Qt or any other framework/library but to a device.

Yocto + Qt5 + LVDS on i.MX6 (FSL Community BSP): rendering and color depth

daheronj — Invalid Date

I've made my own yocto image for a Udoo neo board using graugans/meta-udoo, in eglfs mode (no X11 / Wayland), following this tutorial : http://wiki.wandboard.org/index.php/Building_Qt5_using_yocto_on_Wandboard
Then I developped a simple QT5 application displayed on Udoo's 7" LVDS display.
The rendering of my image is not correct. It seems to be displayed in R/G/B/A = 4/4/4/0 instead of 6/6/6/0.
How can I specify this values before launchning my application ?
Moreover, transparency is not correctely managed on LVDS (but works fine on my PC), could it be a matter with ALPHA value ?

I launch my application by running this script :

#!/bin/sh
export QT_QPA_PLATFORM=eglfs
export QT_QPA_EGLFS_DEBUG
/home/root/my_app

Application logs :

root@udooneo:~# ./launch
Created context for format QSurfaceFormat(version 2.0, options QFlags(), depthBufferSize 0, redBuffe
rSize 4, greenBufferSize 4, blueBufferSize 4, alphaBufferSize 0, stencilBufferSize 0, samples 0, swa
pBehavior 0, swapInterval 1, profile  0) with config:
        EGL_BUFFER_SIZE: 12
        EGL_ALPHA_SIZE: 0
        EGL_BLUE_SIZE: 4
        EGL_GREEN_SIZE: 4
        EGL_RED_SIZE: 4
        EGL_DEPTH_SIZE: 0
        EGL_STENCIL_SIZE: 0
        EGL_CONFIG_CAVEAT: 12344
        EGL_CONFIG_ID: 1
        EGL_LEVEL: 0
        EGL_MAX_PBUFFER_HEIGHT: 8064
        EGL_MAX_PBUFFER_PIXELS: 65028096
        EGL_MAX_PBUFFER_WIDTH: 8064
        EGL_NATIVE_RENDERABLE: 0
        EGL_NATIVE_VISUAL_ID: 0
        EGL_NATIVE_VISUAL_TYPE: 12344
        EGL_SAMPLES: 0
        EGL_SAMPLE_BUFFERS: 0
        EGL_SURFACE_TYPE: 1285
        EGL_TRANSPARENT_TYPE: 12344
        EGL_TRANSPARENT_BLUE_VALUE: -1
        EGL_TRANSPARENT_GREEN_VALUE: -1
        EGL_TRANSPARENT_RED_VALUE: -1
        EGL_BIND_TO_TEXTURE_RGB: 1
        EGL_BIND_TO_TEXTURE_RGBA: 1
        EGL_MIN_SWAP_INTERVAL: 0
        EGL_MAX_SWAP_INTERVAL: 10

Many thanks,

How to run QCamera Example application in Embedded Linux i.MX6 platform?

adityaNatekar — Invalid Date

@Daniel-Nilsson did you get the solution to this?

Qt VirtualKeyboard overlays input field

PhTe — Invalid Date

But in the example project there is a QML component called 'Autoscroller'. I thought that was for automatically scrolling the input fields to the visible area of the screen.

PDF export heat up i.mx6

PhTe — Invalid Date

Hey, thanks for your help. It figured out, that the problem was not the export process. Sorry :) It was the message window i show when the export is complete. I dont know why but it caused the gpu to heat up even if it was closed.

fluidlauncher example: event management for forked process

Gary Bisson — Invalid Date

Hi,

I've got Qt5.5 and the SVG fluidlauncher example built fine for an i.MX6 platform. I wanted to modify this example to launch custom apps. Although it mostly works just by modifying the config.xml, I face an issue where the background app (fluidlauncher) takes over the started app whenever an input event occurs (mouse movement/click).

How to tell the main app to forward every event to the other process? I thought QProcess::ForwardedChannels would take care of it but apparently not.

Not sure if the links below are up to date but the starting process options are the same:
https://github.com/openwebos/qt/blob/master/demos/embedded/fluidlauncher/demoapplication.cpp#L73
http://doc.qt.io/qt-4.8/qt-demos-embedded-fluidlauncher-demoapplication-cpp.html

Regards,
Gary

How to play HTML5 video file on i.MX6 with QtWebKit

njozwiak — Invalid Date

Hi all,

I have cross built Qt 5.4.2 for the i.MX6 with QtWebKit and I am trying to get video files to play using HTML5. I have a very simple demo application that uses WebView to display an HTML page. That page uses an HTML5 video tag to reference a local video file. When the page is displayed, the video controls appear on the screen fine and even show the proper duration for the sample video file. I can press play and the timeline slider moves like the video is playing, but I never see any video frames on the screen.

I validated that I can play this video file manually using gstreamer-1.0 that is built into the root file system. So it's not an issue with GStreamer or the video file itself. I understand Qt must interface with GStreamer somehow for playing these video files. Clearly it's not happening automatically. How do I troubleshoot this? Any ideas on what could be going wrong?

Thanks

main.cpp

int main(int argc, char* argv[])
{
    QApplication app(argc, argv);
    QWebView view;
    view.load(QUrl("file:///home/root/content/page.html"));
    view.show();
    return app.exec();
 }

page.html



Hello, world!

    Your browser does not support HTML5 video.

Problems with Building QT5 for i.MX6

Khalisi — Invalid Date

Hello.I building Qt5 for i.MX6 on this instruction https://community.freescale.com/docs/DOC-94066
But on the fifth point, I have problems.
I created a script .sh:

#!/bin/bash
cd /home/nikishin/qt5
cd qtbase
./configure -v -opensource -confirm-license -no-pch -no-icu -no-xcb -no-opengl -opengl es2
-make libs -device imx6
-compile-examples
-device-option CROSS_COMPILE=/opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-
-sysroot /mnt/RootArm -no-gcc-sysroot
-prefix /opt/Qt5_CM-FX6

Run it, I get a lot of errors.The file with errors in the link(https://dropmefiles.com/G7iRv)
I would be grateful for any help.

QT5/EGLFS QLabel still visible after hide()

Sriram — Invalid Date

Hi, I am trying to play video using gstreamer in qt5 video widget example. If you have time can you please explain how to implement it, gstreamer video plays properly using gst-launch-1.0 command but when i try to play the video widget example from qt i get buffers dropped warning and the video is not running smoothly or it is delayed with breaks. I would also like to know how did u switch between different frame buffers at runtime, like you said gstreamer on fb0 and qt ui on fb1 the board i am using is freescale imx6q board and the kernel is 3.10.17. i built kernel and qt5 with yocto project. Best Regards Sriraman Ravi

Remote debug on i.mx6

okieh — Invalid Date

Hello,

I'm using Qt 5.2.1 and Qt Creator 3.0.1 on Ubuntu 12.04 64-bit host.
If I try to remote debug my application on the freescale i.mx6 board (armv7l) I immediately get a "Illegal instruction"-Signal (SIGILL). The deployment works and I can run the application.

I tried to connect the gdb-server and gdb manually, this works perfect. Because of that I think it's a bug in Qt Creator.

Best regards
okieh

Qt5.4.1 build for IMX6 error

_dmp — Invalid Date

Hi. I try build qt-everywhere-opensource-src-5.4.1 for I.MX6 and got error at linking.

.obj/qvalidator.o:qvalidator.cpp:function QIntValidator::validate(QString&, int&) const: error: undefined reference to 'QLocaleData::validateChars(QString const&, QLocaleData::NumberMode, QByteArray*, int, bool) const'
.obj/qvalidator.o:qvalidator.cpp:function QIntValidator::fixup(QString&) const: error: undefined reference to 'QLocaleData::validateChars(QString const&, QLocaleData::NumberMode, QByteArray*, int, bool) const'
.obj/qvalidator.o:qvalidator.cpp:function QDoubleValidator::validate(QString&, int&) const: error: undefined reference to 'QLocaleData::validateChars(QString const&, QLocaleData::NumberMode, QByteArray*, int, bool) const'
.obj/qvalidator.o:qvalidator.cpp:function QDoubleValidatorPrivate::validateWithLocale(QString&, QLocaleData::NumberMode, QLocale const&) const: error: undefined reference to 'QLocaleData::validateChars(QString const&, QLocaleData::NumberMode, QByteArray*, int, bool) const'
collect2: error: ld returned 1 exit status
make[3]: *** [../../lib/libQt5Gui.so.5.4.1] Error 1
make[3]: Leaving directory /home/pda/distribs/dev-tools/Qt/qt-everywhere-opensource-src-5.4.1/qtbase/src/gui' make[2]: *** [sub-gui-make_first] Error 2 make[2]: Leaving directory /home/pda/distribs/dev-tools/Qt/qt-everywhere-opensource-src-5.4.1/qtbase/src'
make[1]: *** [sub-src-make_first] Error 2
make[1]: Leaving directory `/home/pda/distribs/dev-tools/Qt/qt-everywhere-opensource-src-5.4.1/qtbase'
make: *** [module-qtbase-make_first] Error 2

my config is
./configure -opensource -confirm-license
-device imx6
-device-option CROSS_COMPILE=/usr/local/linaro-toolchain/bin/arm-linux-gnueabihf-
-no-pch
-no-xcb
-opengl es2
-make libs
-nomake examples
-nomake tests
-sysroot /home/work/buildroot-v02/output/staging -no-gcc-sysroot
-prefix ${QTDIR}
-v

What to do?