Normally you need to switch to plughw if you need to resample the audio data to a format MPD does not support (or you specified wrong format in MPD)

On 03/24/2012 06:16 PM, Jesus R wrote:
Thanks for that tip! I have it working now with plughw as well...

Best
Jesus R

On Fri, Mar 23, 2012 at 8:24 AM, adel...@freemail.gr <mailto:adel...@freemail.gr> <adel...@freemail.gr <mailto:adel...@freemail.gr>> wrote:

    I had to use plughw to get past that error.

    On 23/3/2012 1:40 ??, Jurgen Kramer wrote:
    > On Thu, 2012-03-22 at 17:23 +0100, Jurgen Kramer wrote:
    >>>
    >> I took a quick look at the code, it seems it supports the pre-1.0
    >> version of the standard (0xAA markers). I'll give it a test
    tomorow. My
    >> DAC supports both version 1.0 and pre-1.0.
    >>
    >> Jurgen
    >>
    > OK I just test the new code, unfortunately it does not work for me
    > either. It fails to setup ALSA. I tried both through the
    firewire driver
    > and through a SOtM usb-to-spdif converter.
    >
    > Mytek DAC through firewire snd driver:
    > Mar 23 12:28 : output: Failed to open "DAC" [alsa]: Failed to
    configure
    > DSD-over-USB on ALSA device "hw:1,0"
    >
    > Through SOtM usb-to-spdif converter:
    > Mar 23 12:32 : output: Failed to open "sotm" [alsa]: Failed to
    configure
    > DSD-over-USB on ALSA device "iec958:CARD=S20,DEV=0"
    >
    > @Max can you shed some light on this? Are there any configuration
    > options I need to try/add?
    >
    > My mpd.conf enty for the SOtM is:
    >
    > # Entry for SOtM dX-USB HD - USB to SPDIF/Toslink/AES-EBU
    >
    > audio_output {
    >          type            "alsa"
    >          name            "sotm"
    >          device          "iec958:CARD=S20,DEV=0"
    >          use_mmap        "no"
    >          mixer_type      "disabled"
    >          dsd_usb         "yes"
    > }
    >
    > I have also tried with use_mmap "yes".
    >
    > With my old code is opens the ALSA device with:
    > Mar 23 12:38 : output: opened plugin=alsa name="sotm"
    > audio_format=176400:32:2
    >
    > Mar 23 12:40 : output: opened plugin=alsa name="DAC"
    > audio_format=176400:32:2
    >
    > These work for my installation.
    >
    >
    >
    > BTW would it be doable to enable dsd_usb for pipe output? That
    is really
    > handy for debugging output of the decoder.
    >
    > Jurgen
    >
    >
    >

    
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