[Discuss-gnuradio] File sink

[sumitstop]

I have an application where I observe real time display of some bands. What I
want to do is make a FIFO/Buffer where the data can be stored simultaneously
and with a push button 'rewind' I can access the immediate past 15 sec data.

So basically I want to know how to make a such file sink, which can store
just immediate past 15 sec data. 

gr_file_sink keeps increasing the size while gr_head stops after taking a
fixed number of samples.





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