[pulseaudio-discuss] [PATCH] [module-loopback] Add PA_SOURCE_OUTPUT_DONT_MOVE flag of source-output to make the module-loopback unloading when the A2DP source ware unavailable

[Cai Yuanqing]

  Hi guys:

I'm trying to use module-loopback to hear A2DP from my phone,according
to the link below:
http://jprvita.wordpress.com/2009/12/15/1-2-3-4-a2dp-stream/

I got it works well,I can hear the music on my ubuntu via bluetooth from
the phone.
BUT,when the phone disconnects from A2DP anyway,you'll find that
module-loopback still be loaded and move to play audio stream from my
microphone to speakers,sometimes,even giving horrible noises.

reproducing:
1.play music from A2DP as the "blog" mentioned.
      a.add "Enable=Source" into /etc/bluetooth/audio.conf
      b.restart bluetoothd: sudo /etc/init.d/bluetooth restart
      c.connect Audio Source of bluetooth
device:d-feet->org.bluez->/org/bluez/xxxx/hci0/yourdeviceaddress->interfaces->org.bluez.AudioSource->Method->connect()
      d.load-module module-loopback 
source=bluez_source.00_22_A5_AA_BF_85 
sink=alsa_output.pci-0000_00_1b.0.analog-stereo in pacmd

2.disconnect the A2DP no matter from phone side or computer side.

3.pacmd and ls,you will find a sink-input and a source-output are still
there in RUNNING status.

I wrote a patch to make the module-loopback unloading as bluetooth
source was unavailable.

In my opinion ,moving the source of source-output from a live source
like A2DP source to default or any other ones dose not work.only
module-loopback loaded and can not work any more.
So I just want to make the module-loopback can not be moved when the
source is a A2DP source of bluetooth.

BTW,I'm not sure that should we unload the modules when the source it
using were unavailable in the other situations.
Dose anyone have ideas for that?


-- 
B.R

Cai Yuanqing

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