disconnected client but device audio is still not relased

[MG-Sky]

Hello, thanks for such tool it helps me a lot but i found one problem with it. I have tested it with my audio application on my phone and homeasssitant so:

1. when homeassitant sends any audio to the gstreamer on my raspberry i can hear sound and that 's fine but i see the audio device on raspberry is not released - i see the audio device is still locked by gstreamer on ubuntu. and any no other process can access the audio, i have to restart service.
2. when i use my audio app it works fine and i have noticed that if i disconnect from the upnp server in the app, audio device on PI is released but when i kill the audio app. the same happens the audio isn't released.

is there any way to determine if connection is still up and or kill after the XX of idle?

[mill1000]

If you're using ALSA, you could enable dmix on the audio device to allow multiple applications to access it.

e.g. In /etc/asound.conf or ~/.asoundrc, add the following to make the default device be dmix.

pcm.!default {
  type plug
  slave.pcm "dmix"
}

[MG-Sky]

ok i have added entry to asound.conf and configured: /etc/default/gmediarender/ to:

Configuration for gmediarender

ENABLED=1
# User and group the daemon will be running as.
DAEMON_USER="user:pulse-access"

# Device name as it will be advertised to and shown in the UPnP controller UI.
# Some string that helps you recognize the player, e.g. "Livingroom Player"
UPNP_DEVICE_NAME="Streamer on $(hostname)"

# Initial volume in decibel. 0.0 is 'full volume', -10 correspondents to '75' on
# the exported volume scale (Note, this does not change the ALSA volume, only
# internal to gmrender. So make sure to leave the ALSA volume always to 100%).
INITIAL_VOLUME_DB=-6

# If you explicitly choose a specific ALSA device here (find them with 'aplay -L'), then
# gmediarenderer will use that ALSA device to play audio.
# Otherwise, whatever default is configured for gstreamer for the '$DAEMON_USER' is
# used.
#ALSA_DEVICE="ssdefault"
ALSA_DEVICE="dmix:CARD=Device,DEV=0"

# You can pass extra arguments to the daemon
# For example, you can specify a logfile with this line
# (though you need to ensure correct permissions for a log file yourself.)

DAEMON_EXTRA_ARGS="--mime-filter audio  --logfile /var/log/gmediarender.log "****

then it works but... then pulseaudio BT doesn't play nothing:

/dev/snd/controlC1:  mike       2276 F.... (user)pulseaudio
/dev/snd/pcmC1D0p:   mike       2649 F...m (user)gmediarender
/dev/snd/timer:      mike       2649 f.... (user)gmediarender

when i play pulse audio:

ERROR [2023-07-02 14:08:17.596035 | gstreamer] sink: Error: Could not open audio device for playback. (Debug: ../ext/alsa/gstalsasink.c(874): gst_alsasink_open (): /GstAlsaSink:sink: Playback open error on device 'dmix:CARD=Device,DEV=0': Invalid argument) ERROR [2023-07-02 14:08:17.598285 | gstreamer] setting play state failed (2) ERROR [2023-07-02 14:08:17.598789 | upnp] upnp_set_error: Playing failed (704)

pulseaudio settings: load-module module-alsa-sink

when Gmedia stream enabled:

 Jul  2 14:10:31 pi-zero pulseaudio[2276]: Volume not changing
Jul  2 14:10:31 pi-zero pulseaudio[2276]: Hmm, no streams around, trying to vacuum.
Jul  2 14:10:31 pi-zero pulseaudio[2276]: bluez_source.40_EC_99_0F_C8_45.a2dp_source: state: SUSPENDED -> UNLINKED
Jul  2 14:10:31 pi-zero pulseaudio[2276]: IO thread shutdown requested, stopping cleanly
Jul  2 14:10:31 pi-zero pulseaudio[2276]: IO thread shutting down
Jul  2 14:10:31 pi-zero pulseaudio[2276]: bluez_card.40_EC_99_0F_C8_45: active_profile: a2dp_source -> off
Jul  2 14:10:31 pi-zero pulseaudio[2276]: Dropped redundant event due to change event.
Jul  2 14:10:31 pi-zero pulseaudio[2276]: Setting port unknown-input to status unknown
Jul  2 14:10:31 pi-zero pulseaudio[2276]: Dropped redundant event due to change event.
Jul  2 14:10:31 pi-zero pulseaudio[2276]: Properties changed in transport /org/bluez/hci0/dev_40_EC_99_0F_C8_45/fd2
Jul  2 14:10:36 pi-zero pulseaudio[2276]: alsa_output.usb-GeneralPlus_USB_Audio_Device-00.analog-stereo: suspend_cause: (none) -> IDLE
Jul  2 14:10:36 pi-zero pulseaudio[2276]: alsa_output.usb-GeneralPlus_USB_Audio_Device-00.analog-stereo.monitor: suspend_cause: (none) -> IDLE
Jul  2 14:10:36 pi-zero pulseaudio[2276]: Hmm, no streams around, trying to vacuum.

[mill1000]

It appears you're using PulseAudio. In that case, you shouldn't use what I provided above. I haven't used this project with PA, so my advice is suspect.

That said... I think you need to ensure that gmrender-resurrect is utilizing the pulsesink.

• First, I'd check that gstreamer1.0-pulseaudio is installed.
• Then I'd check your log (/var/log/gmediarender.log) to determine if pulsesink is being used by gmrender-resurrect.
• If not you could try purging gstreamer1.0-alsa (if installed). Or specifying the sink manually e.g. --gstout-audiosink=pulsesink

[MG-Sky]

ok i have tested some settings and...

when i use:

gst-launch-1.0 -v audiotestsrc ! pulsesink it works when i play anothre sound from different pulse source

when i try using upnp: ERROR [2023-07-06 08:16:40.344508 | gstreamer] sink: Error: Failed to connect: Connection refused (Debug: ../ext/pulse/pulsesink.c(614): gst_pulseringbuffer_open_device (): /GstPulseSink:sink) ERROR [2023-07-06 08:16:40.345074 | gstreamer] setting play state failed (2) ERROR [2023-07-06 08:16:40.345616 | upnp] upnp_set_error: Playing failed (704)

settings: DAEMON_EXTRA_ARGS="--mime-filter audio --logfile /var/log/gmediarender.log --gstout-audiosink=pulsesink"

[MG-Sky]

ok i found the soultiuon, here: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/565

it was to disable udev module to not access sound cart directly, now both work perfectly!

so what i did:

1. installed: gstreamer1.0-pulseaudio , removed ..-alsa,
2. changed default.pa with: load-module module-alsa-sink device=dmx:..... (apllay -L) load-module module-alsa-source device=dsnoop comment the: # load-module module-udev-detect and # load-module module-detect

the problem was with pulseaudio

[mill1000]

Great. Glad you worked it out. Could you close this issue when you get a chance?