Does anyone know how to change the a2dp audio output stream between Speaker and bluetooth stereo headset?

Does anyone know how to change the a2dp audio output stream between Speaker and bluetooth stereo headset?

[Chan-Yeol Park]

Dear All

Does anyone know how to change the a2dp audio output stream properly
between Speaker and Bluetooth stereo headset?

When we disconnect headset while we listen to A2DP, I think local device
should change the output stream to speaker or earphone.
I think it’s totally rely on Gstreamer control. 
I use Gstreamer and Alsa bluez Plugin. 

Maybe.. I think anybody already think about this problem..and there is a
specialist. ^^


Moreover there is another problem. 
That is a video play case. 

When we play it, it’s difficult to synchronize audio/video. 
I think it’s much more difficult than just audio case….


Regards
ChanYeol, Park

Re: Does anyone know how to change the a2dp audio output stream between Speaker and bluetooth stereo headset?

[Marcel Holtmann]

Hi,

> Does anyone know how to change the a2dp audio output stream properly
> between Speaker and Bluetooth stereo headset?

that is a job for systems like PulseAudio.

Regards

Marcel

RE: Does anyone know how to change the a2dp audio output stream between Speaker and bluetooth stereo headset?

[Chan-Yeol Park]

Somebody said that Pulse audio needs a lot of resource.
( I don't know well pulse audio.. but in case of me I should check the performance )

Do you think that this matter is solved only by pulse audio or like that..?

Regards 
ChanYeol, Park

-----Original Message-----
From: Marcel Holtmann [mailto:marcel@holtmann.org] 
Sent: Tuesday, December 23, 2008 8:50 PM
To: Chan-Yeol Park
Cc: linux-bluetooth@vger.kernel.org; 박수진/S/W Platform Lab.(통신연)/E5(책임)/삼성전자
Subject: Re: Does anyone know how to change the a2dp audio output stream between Speaker and bluetooth stereo headset?

Hi,

> Does anyone know how to change the a2dp audio output stream properly
> between Speaker and Bluetooth stereo headset?

that is a job for systems like PulseAudio.

Regards

Marcel

RE: Does anyone know how to change the a2dp audio output stream between Speaker and bluetooth stereo headset?

[Marcel Holtmann]

Hi,

> Somebody said that Pulse audio needs a lot of resource.
> ( I don't know well pulse audio.. but in case of me I should check the performance )

I don't know how much resources PulseAudio actually consumes and you
better ask the Pulse guys directly.

> Do you think that this matter is solved only by pulse audio or like that..?

The BlueZ implementation for A2DP is not responsible for mixing or
anything else. It is just an audio transport. It is like _one_ audio
card with hotplug. Every mixing or stream switching must be done by the
audio system itself.

Regards

Marcel