Android A2DP Bluetooth SINK and concurrent RFCOMM/SPP support for Nexus 4/5/6/9 -- 2

I require A2DP (Advanced Audio Distribution Profile ) SINK support for Android. Platform focussed on Nexus 4,5,7 and 9. This will have to work in conjunction with simultaneous bi-directional SPP/RFCOMM (Serial Port Profile/Radio frequency communication) traffic. Background: I require to be able to record mono, dual mono or STEREO A2DP audio from an external Bluetooth A2DP source transmitting TO a Nexus 4,5, 6 or 9 and verified low level hardware support to allow this. The SPP/RFCOMM traffic will allow command and control of hardware at the A2DP source end Requirement: Target Android OS is Lolipop (or earlier) which is said to support A2DP SINK. However I need this confirming and establishing an SPP/RFCOMM connection at the same time as A2DP traffic. A native APP on the Nexus device will record Audio from the A2DP stream and use the SPP/RFCOMM channel to control other features. The work within this project is to: Ratify what needs to be altered (if anything) in the Bluetooth stack within the Android OS for these named devices and make these changes with documentation. 1: Provide/ratify solid A2DP SINK support in Android (Nexus 4/5/7/9) 2: Provide/ratify concurrent SPP/RFCOMM support Android (Nexus 4/5/7/9) 3: Present whatever code interfaces to allow use of 1 and 2 in a native Android application 4: Provide readable documentation on work done and use of code in an application. Other info: The external source is likely to be a BLUEGIGA WT32/WT32i Bluetooth module as seen here: [login to view URL] More on A2DP: [login to view URL] Starting support: [login to view URL] ___________________________________________ A2DP, SPP and Bluetooth Specifications attached to this project request for completeness