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Audio Output Example on Android and iOS is silent

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  • Z Offline
    Z Offline
    zing0000
    wrote on last edited by
    #1

    I get no audible output on either platform, and I wonder if QAudioOutput APIs are supported.

    I am using Nexus7 with android 6.0.1 and iPhone6 with iOS 10.2.1.

    My own app has a sine generator and meters, so I can see that a signal is generated. I have a device selector that finds the "default" output device. Both this app and the Audio Output example are silent. Both use the QAudioOutput APIs.

    I have an older Android phone and it works perfectly.

    I have another App that uses the QMediaPlayer API for audio and that works on Nexus7.

    Please let me know if you have had more success!

    Z 1 Reply Last reply
    0
    • Z zing0000

      I get no audible output on either platform, and I wonder if QAudioOutput APIs are supported.

      I am using Nexus7 with android 6.0.1 and iPhone6 with iOS 10.2.1.

      My own app has a sine generator and meters, so I can see that a signal is generated. I have a device selector that finds the "default" output device. Both this app and the Audio Output example are silent. Both use the QAudioOutput APIs.

      I have an older Android phone and it works perfectly.

      I have another App that uses the QMediaPlayer API for audio and that works on Nexus7.

      Please let me know if you have had more success!

      Z Offline
      Z Offline
      zing0000
      wrote on last edited by
      #2

      Forgot to mention, I am using Qt5.7.0

      Z 1 Reply Last reply
      0
      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #3

        Hi,

        Can you check 5.8 since it just got out ?

        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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        • Z zing0000

          Forgot to mention, I am using Qt5.7.0

          Z Offline
          Z Offline
          zing0000
          wrote on last edited by
          #4

          @zing0000

          Here is the xcode output when I run the Audio Output Example

          2017-02-08 19:38:27.316780 audiooutput[1600:1402980] [DYMTLInitPlatform] platform initialization successful
          QPlatformInputContext::inputMethodAccepted() does not match actual focus object IM enablement!
          2017-02-08 19:38:39.645862 audiooutput[1600:1402793] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /private/var/containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles
          2017-02-08 19:38:39.655261 audiooutput[1600:1402793] [MC] Reading from public effective user settings.
          QPlatformInputContext::inputMethodAccepted() does not match actual focus object IM enablement!
          QPlatformInputContext::inputMethodAccepted() does not match actual focus object IM enablement!
          
          

          The app is running, but is silent. And the volume slider does not work!

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #5

            Based on the Multimedia backends matrix both platform are supported.

            Silly question but did you check the volume and mute state of your devices ?

            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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