蓝牙a2dp配置文件如何工作？

Question

I want to create a bluetooth music player application which streams audio from one device to another. I have read everything on the android developers page about bluetooth and I found that a profile called a2dp has been specifically created for audio streaming. However not much has been provided on how to use it. I have also gone through the bluetooth chat example but i have been unable to figure out how to actually send audio and how to receive it. I have also read that a2dp sink functionality has been added as of android 5.0. After spending hours on stackoverflow I see numerous questions asking the same thing but without any satisfactory answer.

My main questions are-

1. How does the bluetooth a2dp profile work?
2. Are there better methods to implement audio streaming between android devices apart from a2dp?

Any help would be greatly appreciated.

Answer 1

You can read the AVDTP core specification to know what happens during an a2dp connection. But if you want to know about the working of it in terms of coding, I suggest you go through this blog which I found useful.