Bug 40643

Created attachment 50926 [details]
pulseaudio verbose log from its start till crash by trying to set RAOP volume (pulseaudio -vvv --log-target=file:)

Circumstances:

I'm trying to use PulseAudio's RAOP discover and audio sink functionality with an Apple AirPort Base Station (A1264, 802.11bgn version, 2008 edition, with the latest firmware).

PulseAudio:

PulsAaudio can discover my AirPort device fine which is set up to get an IP address via wireless from my router via my real wireless AP. PulseAuidoo can set up an output device for it with a name of the "speaker name" configured in AirPort Base Station Utility (Windows version working fine in Wine with a little workaround).


Problem #1:
As soon as I try controlling the RAOP device's volume/mute state, without any application using it yet, pavucontrol errors out with a message box:

 <2> / pa_context_set_sink_volume_by_index() failed: Bad state

then when I close this, I can see another box:
 Connection failed: Connection terminated

I've tried to first kill the automatically respawned pulseaudio -k, then run it again with pulseaudio -vvv as normal user.

See complete log output in the attachment.

When I try setting the volume (nothing is playing on it yet) or muting it the following output is generated in pulseaudio's verbose output:

D: [pulseaudio] protocol-native.c: Client pavucontrol changes volume of sink raop.a1264.local.
D: [pulseaudio] module-raop-sink.c: Requested volume: 0:  63% 1:  63%
D: [pulseaudio] module-raop-sink.c: Got hardware volume: 0:  63% 1:  63%
D: [pulseaudio] module-raop-sink.c: Calculated software volume: 0: 100% 1: 100%
E: [pulseaudio] rtsp_client.c: Assertion 'c->url' failed at modules/rtp/rtsp_client.c:395, function rtsp_exec(). Aborting.

[See attachment for the full log]

Problem 2:

When I try assigning an application's output to the RAOP device without altering the volume (I named it A1264 in its utility), sounds like streaming starts through it, but it does stream with 2 seconds interruptions/pauses.

Therefore I tried to rebuild it from the current git source, it still does the same thing (crashes at volume setting of RAOP). 

I've tried recompiling it with the patch applied from:
http://pulseaudio.org/attachment/ticket/571/ignore-rtsp-requests-until-setup.patch

With the patch the daemon does not crash, but there is no sound output on the RAOP device, and applications that I tried (Clementine, qmmp) to output through the raop sink just hang without being able to stream any sound (they have to be forcefully killed first to get them streaming again through the normal default alsa-sink.)