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    Unsolved Arm-linux play media fail

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    • Mihan
      Mihan last edited by

      The project show " defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer" "
      In ..../qt5/plugin/mediaservice/ there is only a libqtmedia_audioengine.so.
      what should I do.

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      • SGaist
        SGaist Lifetime Qt Champion last edited by

        Hi,

        Did you build Qt yourself ?

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

        Mihan 1 Reply Last reply Reply Quote 0
        • Mihan
          Mihan @SGaist last edited by

          @sgaist HI.
          Yes,I build Qt by myself

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          • SGaist
            SGaist Lifetime Qt Champion last edited by

            Did you install all of gstreamer development packages ?

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

            Mihan 1 Reply Last reply Reply Quote 0
            • Mihan
              Mihan @SGaist last edited by

              @sgaist I don't know, could you tell me how to check it out.
              should I download gstreamer from https://gstreamer.freedesktop.org/src/qt-gstreamer/?

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              • SGaist
                SGaist Lifetime Qt Champion last edited by

                Use your distribution package manager for that or rather the one from your target device if you are cross-compiling.

                Interested in AI ? www.idiap.ch
                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                Mihan 2 Replies Last reply Reply Quote 0
                • Mihan
                  Mihan @SGaist last edited by

                  @sgaist I don't quite understand.
                  I use uart terminal to control the board.
                  It just show me about the gst-

                  root@imx6qsabresd:~# gst-
                  gst-device-monitor-1.0  gst-launch-1.0          gst-typefind-1.0
                  gst-discoverer-1.0      gst-play-1.0            
                  gst-inspect-1.0         gst-stats-1.0           
                  

                  also I find gstreamer-1.0 in /usr/share/
                  Could you please tell me how to do in detail?

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                  • Mihan
                    Mihan @SGaist last edited by Mihan

                    @sgaist BTW, I can play the mp3 file by mplayer

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                    • SGaist
                      SGaist Lifetime Qt Champion last edited by

                      What distribution are you using on your device ?

                      Interested in AI ? www.idiap.ch
                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                      • Mihan
                        Mihan @SGaist last edited by

                        @sgaist
                        Sorry, I'm new to the embedded, I'm not sure what the distribution means. Is the core board on the device? It's NXP ARM 7 cortex-A9. Or the system version? It's Arm-linux kernel 4.1.15.

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                        • SGaist
                          SGaist Lifetime Qt Champion last edited by

                          I mean what Linux distribution are you running on the device ?

                          Interested in AI ? www.idiap.ch
                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                          • Mihan
                            Mihan last edited by

                            @SGaist
                            Linux distribution refers to Ubuntu or CentOS? If yes, I just know I'm using Ubuntu 12.04 on VMWare on PC. Is NXP also a Linux distribution?
                            I got this message by uname -a :

                            root@imx6qsabresd:~# uname -a
                            Linux imx6qsabresd 4.1.15 #9 SMP PREEMPT Fri Aug 23 10:07:29 CST 2019 armv7l armv7l armv7l GNU/Linux
                            

                            Is this what you need?

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                            • SGaist
                              SGaist Lifetime Qt Champion last edited by

                              No, NXP is not a Linux distribution, it's a semiconductor manufacturer.

                              Do you have somewhere in the documentation provided some information about the software stack running on your device ?

                              Interested in AI ? www.idiap.ch
                              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                              • Mihan
                                Mihan @SGaist last edited by Mihan

                                @sgaist
                                As far as I know, we can get the Linux distribution from /etc/issue.net or /proc/version. But the content is

                                cat /etc/issue.net 
                                Freescale i.MX Release Distro 4.1.15-2.1.0 %h
                                
                                cat /proc/version
                                Linux version 4.1.15 (vmuser@Linux-host) (gcc version 5.3.0 (GCC) ) #9 SMP PREEMPT Fri Aug 23 10:07:29 CST 2019
                                

                                I think they had been changed by Freescale, so I can't know the original distribution. Or maybe I can get it from customer service or their forum.

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                                • Mihan
                                  Mihan @SGaist last edited by Mihan

                                  @sgaist Now I want to cross-compile again, and I got a new ubuntu to do it following Building Qt 5 from Git. When configuring, it couldn't checking for GStreamer: GStreamer support cannot be enabled due to functionality tests!. What should I do?

                                  Maybe I know what Linux distribution the Freescale use, it's Yocto!

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                                  • SGaist
                                    SGaist Lifetime Qt Champion last edited by

                                    You need the GStreamer development packages installed.

                                    Interested in AI ? www.idiap.ch
                                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                    Mihan 2 Replies Last reply Reply Quote 0
                                    • Mihan
                                      Mihan @SGaist last edited by Mihan

                                      @sgaist I use QT_DEBUG_PLUGINS to see the output:

                                      QFactoryLoader::QFactoryLoader() checking directory path "/usr/lib/qt5/plugins/mediaservice" ...
                                      QFactoryLoader::QFactoryLoader() looking at "/usr/lib/qt5/plugins/mediaservice/libqtmedia_audioengine.so"
                                      Found metadata in lib /usr/lib/qt5/plugins/mediaservice/libqtmedia_audioengine.so, metadata=
                                      {
                                          "IID": "org.qt-project.qt.mediaserviceproviderfactory/5.0",
                                          "MetaData": {
                                              "Keys": [
                                                  "audiocapture"
                                              ],
                                              "Services": [
                                                  "org.qt-project.qt.audiosource"
                                              ]
                                          },
                                          "className": "AudioCaptureServicePlugin",
                                          "debug": false,
                                          "version": 329218
                                      }
                                      Got keys from plugin meta data ("audiocapture")
                                      defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"
                                      

                                      Does it mean it's running without some plugins?
                                      Also I ready to compile qt-gstreamer, cus I have installed GStreamer on Ubuntu bysudo apt-get install, but it doesn't work:

                                      checking for GStreamer 1.0... 
                                      Project WARNING: pkg-config disabled, can't check package existence
                                      Project ERROR: gstreamer-1.0 development package not found
                                      GStreamer 1.0 disabled.
                                      checking for GStreamer 0.10... 
                                      Project WARNING: pkg-config disabled, can't check package existence
                                      Project ERROR: gstreamer-0.10 development package not found
                                      GStreamer 0.10 disabled.
                                      GStreamer support cannot be enabled due to functionality tests!
                                      

                                      So I use sudo find / -name *gstreamer*-dev* to find the development packet:

                                      vmuser@Linux-host:~/qt-everywhere-opensource-src-5.6.2$ sudo find / -name *gstreamer*-dev*
                                      /var/cache/apt/archives/libgstreamer0.10-cil-dev_0.9.2-4_all.deb
                                      /var/cache/apt/archives/libgstreamer0.10-dev_0.10.36-1ubuntu1_amd64.deb
                                      /var/cache/apt/archives/libgstreamer-plugins-base0.10-dev_0.10.36-1ubuntu0.2_amd64.deb
                                      /var/cache/apt/archives/libgstreamer-vaapi0.10-dev_0.3.6-0ubuntu2_amd64.deb
                                      /var/cache/apt/archives/libgstreamer-plugins-bad0.10-dev_0.10.22.3-2ubuntu2.5_amd64.deb
                                      /var/lib/dpkg/info/libgstreamer0.10-dev.md5sums
                                      /var/lib/dpkg/info/libgstreamer0.10-dev.list
                                      /var/lib/dpkg/info/libgstreamer-plugins-bad0.10-dev.md5sums
                                      /var/lib/dpkg/info/libgstreamer-plugins-base0.10-dev.list
                                      /var/lib/dpkg/info/libgstreamer0.10-cil-dev.list
                                      /var/lib/dpkg/info/libgstreamer-vaapi0.10-dev.md5sums
                                      /var/lib/dpkg/info/libgstreamer-vaapi0.10-dev.list
                                      /var/lib/dpkg/info/libgstreamer-plugins-bad0.10-dev.list
                                      /var/lib/dpkg/info/libgstreamer-plugins-base0.10-dev.md5sums
                                      /var/lib/dpkg/info/libgstreamer0.10-cil-dev.md5sums
                                      /usr/share/doc/libgstreamer-plugins-bad0.10-dev
                                      /usr/share/doc/libgstreamer-plugins-base0.10-dev
                                      /usr/share/doc/libgstreamer0.10-cil-dev
                                      /usr/share/doc/libgstreamer-vaapi0.10-dev
                                      /usr/share/doc/libgstreamer0.10-dev
                                      

                                      , and I add all these path into $PATH, it also doesn't work
                                      (Project WARNING: pkg-config disabled, can't check package existence Project ERROR: gstreamer-1.0 development package not found)
                                      .

                                      Or should I find the code to cross-compiler the GStreamer and export PKG_CONFIG_PATH for configure?

                                      Thank you so much for your support~

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                                      • Mihan
                                        Mihan @SGaist last edited by Mihan

                                        This post is deleted!
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                                        • SGaist
                                          SGaist Lifetime Qt Champion last edited by

                                          QtGStreamer is not an official Qt module and unrelated to QtMultimedia.

                                          You should rather use GStreamer 1.0.

                                          Are you sure these are installed and not just downloaded ?

                                          Interested in AI ? www.idiap.ch
                                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                          • Mihan
                                            Mihan @SGaist last edited by Mihan

                                            @sgaist Ok, a bit messy now, let's tidy up first.
                                            I only use QMediaPlayer to play a music.
                                            On Ubuntu(VMWare), it's working without any error message.
                                            But on Arm-Linux(yocto, provided by NXP, maybe), it doesn't work with error message:
                                            defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"
                                            If Qt Multimedia doesn't relate to Qt GStreamer but the basic GStreamer, how can I check whether the device support Qt Multimedia or not, cus I can play mp3 by mplayer, I can find the basic GStreamer(gstreamer 1.0 )on the device.
                                            Or do you have other suggestion to play music with adjusting volume and schedule, cus QSound can not adjust these attributes; QAudioOutput must set any other attributes(sample rate and channel); QSoundEffect can not adjust schedule.
                                            BTW, could QMediaPlayer play the wav file?
                                            Also, I ran the example /usr/share/qt5/examples/multimedia/imxplayer/imxplayer,it 's a Qt5 demo media palyer integrated with freescale Gstreamer 1.0 framework for X11 graphics.

                                            root@imx6qsabresd:~# /usr/share/qt5/examples/multimedia/imxplayer/imxplayer 
                                            ** Message: GStreamer version 1.8.1
                                            display(/dev/fb0) resolution is (1280x800).
                                            ====== OVERLAYSINK: 4.1.6 build on Jun 20 2017 08:56:25. ======
                                            ** Message: videosink is overlay
                                            

                                            It can find the basic GStreamer.

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