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cjcliffe / CubicSDR

Cross-Platform Software-Defined Radio Application
http://www.cubicsdr.com
GNU General Public License v2.0
2.06k stars 253 forks source link

Where can I find a detailed description of the Cubic SDR #788

Closed serj053 closed 4 years ago

serj053 commented 4 years ago

Is there a map of the CubicSDR application where you can see which file is responsible for which functionality. This is an interesting application and I want to understand it in detail in order to create a small laboratory for studying digital signal processing.

vsonnier commented 4 years ago

Hi @serj053, thank you for your interest ! Please read here : #756 (and follow the links described there) for pointers on how to use Cuubic.

Dantali0n commented 4 years ago

For what it is worth I do not think this question was about "using" Cubic but is about it's architecture. There is no real documentation on it's component architecture but I can tell you it is heavily multi-threaded and relatively easy to step through all the code using a modern IDE such as Clion.

vsonnier commented 4 years ago

Is there a map of the CubicSDR application where you can see which file is responsible for which functionality.

Sorry @serj053 , I didn't read in detail. I've no time to explain the architecture in much detail, but you may start with SDRThread::readStream() : this is where the I/Q samples are streamed. On one side, you can the follow all the output queues like iqDataOutQueue->try_push(dataOut) down to where data are really demodulated.

On the other side, backtracking from SDRThread will show you how it is set up which eventually ends in the UI side of things.

@Dantali0n is right, Cubic is basically made of components running IOThread threads piping data to each other through ThreadBlockingQueue. Data ifself flowing into the ThreadBlockingQueue queues are ReBuffer<> which are preallocated buffers from pools with automatic garbage collection (using std::shared_ptr under the hood).

Follow all their paths back and forth and you will see it all.

serj053 commented 4 years ago

Thanks for the tips. I will start mastering CubucSDR.