[SOLVED] CamillaDSP - MPD unable to play flat.yml

[windows97]

@windows97 The problem "MPD unable to play flat.yml" is not really a specifc issue to solve. It a general way of saying that it 'just' doesn't work, so there will not not be a single solution to solve it. In case of the OP the cause was found and solved.

If the config file contains a red cross at the moode camilladsp config page (like with selecting the config and press the check button), it can be the case the config file is corrupt or invalid.
It this is the case can you download the flat config and post it here, thanks?

@katariat any reason why you didn't provided the requested information anymore?

There is a hotfix available to enable toggling of the requested debug information from the moode camilladsp config page:

Code:

sudo wget -q http://moodeaudio.org/test/camilla_hotfix1.zip
sudo unzip -q ./camilla_hotfix1.zip
sudo ./camilla_hotfix1/install.sh
sudo rm -rf ./camilla_hotfix1*

After this you can change the log level to verbose.

And if the camilladgui configuration is valid (pipeline configuration > listbox > select config > press button check), then:

Some of the problems can come of that the playback device used in the camilladsp config uses the "hw:x,0" instead of the "plughw:x,0"device.
You can check this by:

• On the moode camilladsp config page diable the option of patch the default device in the general section.
  
• On the moode camilladsp config page pipelineditor editor section; eanble expert mode and flip status to on.
  
• On the moode camilladsp config page pipelineditor editor section; press open editor
  
• In the camillagui editor on the devices tab section playback device change 'hw:x,0' to 'plughw:x,0'
  

@bitlab Here is how my flat.yml looks like:

---

devices:
  samplerate: 44100
  chunksize: 1024
  queuelimit: 1
  capture:
    type: File
    channels: 2
    filename: "/dev/stdin"
    format: S16LE
  playback:
    type: Alsa
    channels: 2
    device: "hw:2,0"
    format: S32LE
mixers:
  stereo:
    channels:
      in: 2
      out: 2
    mapping:
      - dest: 0
        sources:
          - channel: 0
            gain: -3
            inverted: false
      - dest: 1
        sources:
          - channel: 1
            gain: -3
            inverted: false
pipeline:
  - type: Mixer
    name: stereo

---

Now I can see some mismatches, but the thing is also that I seem to not be able to edit without getting the "500 error, server got itself in trouble message."
It's also that every time I save, I cannot load the configuration back into CamillaDSP and the gui to edit, so I have to start from zero again, building the pipeline and everything. At least it doesn't load into the gui editor.

My platform is:

Release: 7.2.1 2021-05-06
RaspiOS: 10.6
Linux kernel: 5.4.77+ #1371
Platform: Pi-B 2.0 256MB
Architecture: armv6l
MPD version: 0.22.6_p0x3