QAudioDeviceInfo::availableDevices(QAudio::Mode::AudioInput) returning output devices
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General and Desktop
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I'm creating a widget to display/select audio devices. As per the post title I'm getting some output devices showing in the list of input devices. I'm on Linux Mint (Ubuntu 16.04).
Here's a screenshot of the device tree:
Running a debug build in Creator I see this output while the code is probing for devices:
ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream -
I'm creating a widget to display/select audio devices. As per the post title I'm getting some output devices showing in the list of input devices. I'm on Linux Mint (Ubuntu 16.04).
Here's a screenshot of the device tree:
Running a debug build in Creator I see this output while the code is probing for devices:
ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:968:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream@hummingway I'm not sure what your question is. Is it about these ALSA warnings?
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Are you talking about those "alsa_output......monitor" devices? Those are not output devices.
They are monitor sources that can use whatever comes from the output as input, something like "What-U-Hear" or "Stereo Mix" in Windows.@Bonnie said in QAudioDeviceInfo::availableDevices(QAudio::Mode::AudioInput) returning output devices:
Are you talking about those "alsa_output......monitor" devices? Those are not output devices.
They are monitor sources that can use whatever comes from the output as input, something like "What-U-Hear" or "Stereo Mix" in Windows.Sorry for not being clear. That was I was wondering about. Thanks.
