[Portaudio] using all channels of class compliant RME Babyface Pro USB audio interface

Be be.0 at gmx.com
Thu Dec 10 08:59:36 EST 2015


Huh. I just tried it again with PA_ALSA_PLUGHW=1 and it worked. Why?

Debug [Main]: SoundManager::setupDevices()
Debug [Main]: SoundDeviceNetwork::open() "Network stream"
Debug [Main]: framesPerBuffer: 256
Debug [Main]: Requested sample rate:  44100 Hz, latency: 5.80499 ms
Debug [Main]: SoundDevicePortAudio::open() "2, Babyface Pro (70785713): 
USB Audio (plughw:1,0)"
Debug [Main]: framesPerBuffer: 256
Debug [Main]: Requested sample rate:  44100 Hz, latency: 5.80499 ms
Debug [Main]: Output channels: 4 | Input channels: 0
Debug [Main]: Opening stream with id 2
Debug [LibraryScanner 1]: LibraryHashDAO::initialize 
LibraryScanner(0x38a50080, name = "LibraryScanner 1") "LIBRARY_SCANNER"
Debug [LibraryScanner 1]: CueDAO::initialize LibraryScanner(0x38a50080, 
name = "LibraryScanner 1") "LIBRARY_SCANNER"
Debug [LibraryScanner 1]: TrackDAO::initialize 
LibraryScanner(0x38a50080, name = "LibraryScanner 1") "LIBRARY_SCANNER"
Debug [LibraryScanner 1]: DirectoryDAO::initialize 
LibraryScanner(0x38a50080, name = "LibraryScanner 1") "LIBRARY_SCANNER"
Debug [LibraryScanner 1]: LibraryScanner event loop starting.
Debug [Main]: Opened PortAudio stream successfully... starting
Debug [Main]: Dynamically loaded PortAudio library
Debug [Main]: PortAudio: Started stream successfully
Debug [Main]:    Actual sample rate:  44100 Hz, latency: 5.80499 ms
Debug [Main]: Using "Babyface Pro (70785713): USB Audio (plughw:1,0)" as 
output sound device clock reference
Debug [Main]: 2 output sound devices opened
Debug [Main]: 0 input  sound devices opened

On 12/10/2015 03:45 AM, Alan Horstmann wrote:
> Can you show the Mixxx debug output in this case, like in the original post,
> please.
>
> Regards
>
> Alan
>
> On Thursday 10 December 2015 08:50, Be wrote:
>> I already tried that. The same issue happened.
>>
>> On 12/10/2015 02:53 AM, Alan Horstmann wrote:
>>> Just a quick reply, in the middle of other things..
>>>
>>> The 'hw:' devices/alsa-pcms require the correct number of channels, and
>>> format etc.  As a test, set an env variable
>>> 	export PA_ALSA_PLUGHW=1
>>> and run Mixxx (from that terminal or environment).  The pcm should list
>>> as 'plughw:' and will open any number of channels.  This may be the
>>> issue.  It is what I have been addressing in the Portaudio branch
>>> 'Alsa-experimental'.
>>>
>>> Give it a try and report back, please.
>>>
>>> Regards
>>>
>>> Alan
>>>
>>> On Thursday 10 December 2015 08:37, Be wrote:
>>>> No, only channels 1-4. Channels 1-2 are the main XLR outputs, channels
>>>> 3-4 are the headphone outputs, channels 5-12 are the ADAT outputs (or
>>>> 5-6 for SPDIF).
>>>>
>>>> On 12/10/2015 02:36 AM, Ross Bencina wrote:
>>>>> Sorry, seems that my message got truncated. My question was:
>>>>>
>>>>> Did you try to open all 12 channels?
>>>>>
>>>>> Ross.
>>>>>
>>>>> On 10/12/2015 7:22 PM, Ross Bencina wrote:
>>>>>> Hi,
>>>>>>
>>>>>> On 10/12/2015 5:37 PM, Be wrote:
>>>>>>> Debug [Main]: SoundManager::setupDevices()
>>>>>>> Debug [Main]: SoundDevicePortAudio::open() "2, Babyface Pro
>>>>>>> (70785713): USB Audio (hw:1,0)"
>>>>>>> Debug [Main]: framesPerBuffer: 256
>>>>>>> Debug [Main]: Requested sample rate:  44100 Hz, latency: 5.80499 ms
>>>>>>> Debug [Main]: Output channels: 4 | Input channels: 0
>>>>>>> Debug [Main]: Opening stream with id 2
>>>>>
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