[Nexus 7 General] Quindor:
I've recently acquired a new car which has a built in stereo system (Renault Megane Estate 2012 Bose edition) which is able to receive CBR encoded A2DP streams. It works well, connects, music plays, even controls work.

Awesome!

Using catlog I can see that the bitpool that is negotiated is 51. While the sound isn't horrible, I believe the handsets (Samsung Galaxy SIII Int. and Nexus 7, both running CM10 nightly) are able to encode and transmit at a higher bitrate/bitpool then currently is set.

I've tried my best effort in changing this settings. I've built my own Ubuntu kitchen, followed all the guides and have from the looks of it compiled a successful ROM image. Sadly enough when I flash it, my tablet dies (black screen) and even CWM is destroyed. Using fastbood and USB I've been able to recover the tablet, so no problem there, but still, no working ROM. Even without changing something. But that is not what this thread is for, I'll figure that out eventually.

I am trying to recreate the results that are in the following topic : http://xdaforums.com/showthread.php?t=1880298

Sadly, the files provided are not compatible with my CM10 devices and changing the source and then compiling it and replacing the files yields no result. Whatever I try, it stays at 51 (The bitpool it SENDS to the radio as max). There are several files which are connected to the settings, such as cbr.c , audio.a2dp.default.so, etc. but I don't really know what to change to get the desired results.

If anyone is able to help, that would be greatly appreciated. Point me to the right file where I can find the values to change, either in a compiled ROM or in the source so that I can compile it and change the files in

my running ROM using rootexplorer. Whatever works.

I would like to try settings as high as 125. But ideally, I would like to experiment what my headunit accepts, what it can be forced to, and thus finding the highest quality possible using my combination of equipment.

In this the Nexus 7 is the most important because that will be permanently located in the car.

update--

I have found a thread on bluez surrounding this topic.

http://www.spinics.net/lists/linux-bluetooth/msg23091.html

Could someone more knowledgeable then me please take a look at this for me and maybe change the file? Sadly that goes way beyond my programming knowledge, but I would really love to give it a try!

update--

Some extra information and a good explanation as to why I am looking for this (and maybe more people with me).

I've done some more tests editing and replacing files and I think I've actually gotten it to sync higher but it still displays it's at 51. The sound just sounds a lot better, but of course, that can always be a placebo effect. :silly:

So, anyone have any insight, or who can point me into the right direction of what needs to be changed and where? As said, I think I have reached the quality increase (bitpool 100) but the logs still display 51.... not quite there yet. And in light of people using the Nexus 7 in a cars a lot (which I also intend) and the borked headphones output I read everywhere, CD quality streaming over A2DP (It's possible) would be awesome! :D