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pothosware / SoapyRTLSDR

SoapySDR RTL-SDR Support Module
https://github.com/pothosware/SoapyRTLSDR/wiki
MIT License
124 stars 29 forks source link

Issue with sync API #8

Closed guruofquality closed 8 years ago

guruofquality commented 8 years ago

Referencing this issue: https://github.com/pothosware/SoapyRemote/issues/9 I noticed that a FM demod demo was extremely choppy and causing audio underflows. This didnt happen with the RTL support from SoapyOsmo. I couldn't find anything obviously wrong with the use of the sync api or the conversion code.

So I switched to the async api on this branch and the problem went away: https://github.com/pothosware/SoapyRTLSDR/commits/async_stream

I suspect a bug in the sync API, and I wonder if anyone else is seeing a similar issue. Although the sync API is more fitting here, if its going to have issues, the async_stream branch needs some cleanup and can be merged.

cjcliffe commented 8 years ago

I would say we should go ahead and pull the async version to master; there's no downside in performance that I've found; the problems seem to have just evaporated.

guruofquality commented 8 years ago

The async work is now merged into master and I did some cleanup as well.

cjcliffe commented 8 years ago

Excellent; thanks -- with this update it's much more stable on SoapyRemote than rtl_tcp.
rtl_tcp constantly crashed on my Pi with the slightest interruption, could barely handle 2Mhz and I was never able to re-load until I restarted the Pi..