Sending data between Java to c++ on windows?

Question

I want to send the raw audio buffer to c++ for audio transcoding. I have two option

1. using piped stream
   • using direct buffers (java.nio)

Are these really my 2 best options (and which would people recommend?) Thanks!

Answer 1

Direct buffers in NIO will almost certainly have better performance. This is pretty much the ideal case for direct buffers.

I'm not sure what the point of your question is - if you want to know if there are other options, then the answer is certainly yet (you could, for example, write to a file then invoke an external application to process it - or you could use JNI without direct buffers). But if you want a tightly coupled, highly performant interface between Java and C++ code, JNI along with direct buffers, is going to be the tool to use.

Answer 2

JNI is easy to screw up, therefore people tend to complain about it. But it is an excellent and extremely stable option, when done correctly.

Answer 3

You may use sockets (that accepts connection from local) but that will be more effective on *nix systems I guess.

Answer 4

If you don't need realtime transcoding, I would choose the buffers approach. In this way you have better control and you'll be sure that no byte is lost.