[Bluez-devel] Sonorix Headset works with modification + sbc questions

["Frédéric DALLEAU" <frederic.dalleau@palmsource.com>]

Hi all,

I've got a Sonorix (openbrain?) Headset OBH-100.
As it is a bluetooth.org certified A2DP device, it should have worked =

flawlessly at 44100hz. Maker says a failsafe value is 32000hz bitpool 44.
It had to patch a little bit to make it work :

At 44100 hz, sbc bitpool of 32, music is recognizable but too slow, and =

full of gaps.
At 32000 hz, sbc bitpool of 32, music is good, but 32000hz really loses =

quality. However, all my headsets have worked, but the audio player must =

support the conversion.
At any rate sbc bitpool of 44, music is recognizable but ways ways too =

slow, and full of gaps.

My question is : Are there restriction on using sbc encoder with bitpool =

values other than defaults?

Does anyone know if this formula is right to calculate packet length to =

give to sbc encoder? Should I take bitpool into account?

        /// 16 bits * 2 channels * 16 blocks * 8 subbands =3D 4096bits =3D =
512 o/
        codesize=3Da2dp->sbc.subbands*a2dp->sbc.blocks*a2dp->sbc.channels*2;


Thank you,

Fr=E9d=E9ric


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