Android 7.1.2 Bluetooth A2DP audio sink

I am looking for an Android developer with bluetooth experience to create an Android 7.1.2 Bluetooth A2DP audio sink service. It needs to support AVRCP. My company will integrate this service into our kiosk-style app in our system to let users stream audio to our device. Our system uses either an RK3288 board with the AP6256 bluetooth chip, or an RK3399 system using the AIC8800 bluetooth chip -- the service should support both. The service should also support giving our application access to the audio stream so that we can do our own DSP. We want the source code too. We also want a very basic app demonstrating the function and use of the API. We can make changes at the OS level in our system to support your code.

Let me know if you can do this and we can work out a specific API.

Skills and experience required:
- Proficiency in Android development
- Strong knowledge of Bluetooth and A2DP audio streaming
- Experience in creating audio playback applications
- Understanding of Android 7.1.2 platform

The desired timeline for completing this project is 2-4 weeks, but is negotiable.