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Qaudioinput

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  • E Offline
    E Offline
    ericMath
    wrote on last edited by
    #1

    Why int len = audio_input->bytesReady(); is not fixed in linux 64 but in windows is fixed in
    1280

    audio format is

    format.setSampleRate(16000);
    format.setChannelCount(1);
    format.setSampleSize(16);
    format.setSampleType(QAudioFormat::SignedInt);
    format.setByteOrder(QAudioFormat::LittleEndian);
    format.setCodec("audio/pcm");

    Paul ColbyP 1 Reply Last reply
    0
    • E ericMath

      Why int len = audio_input->bytesReady(); is not fixed in linux 64 but in windows is fixed in
      1280

      audio format is

      format.setSampleRate(16000);
      format.setChannelCount(1);
      format.setSampleSize(16);
      format.setSampleType(QAudioFormat::SignedInt);
      format.setByteOrder(QAudioFormat::LittleEndian);
      format.setCodec("audio/pcm");

      Paul ColbyP Offline
      Paul ColbyP Offline
      Paul Colby
      wrote on last edited by
      #2

      Hi @ericMath,

      Why audio_input->bytesReady(); is not fixed in linux 64 but in windows is fixed in1280

      Its probably to do with the underlying OS services / drivers being completely different. For example, compare then implementations for ALSA vs Windows:

      • https://github.com/qt/qtmultimedia/blob/5.10/src/plugins/alsa/qalsaaudioinput.cpp#L491
      • https://github.com/qt/qtmultimedia/blob/5.10/src/plugins/windowsaudio/qwindowsaudioinput.cpp#L447

      Either way, you should not assume the return value to be consistent on any platform, even if it is on whatever current version of Qt you're using.

      Cheers.

      1 Reply Last reply
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