pommaq / dump1090 Goto Github PK

The builtin Ubuntu runner doesnt have access to the semaphore header in C++. This is a feature we sort of need... While this could be self-implemented I think its much better to simply run a more sensible vesion of G++.

The current layout of the program feels like a massive blob and is very hard to refactor into the way I want it to be. It should be segmented into multiple parts with interfaces for the rest of the code. For example the data source should be transparent whether or not its a rtlsdr or a file.

The current design requires us to know whether or not a package is broken or not before grabbing the next one (since it skips any byte that are part of a good message) by passing the packet up the layers before continuing. This needs to be broken apart but there is a design decision that needs to be done:
Since we won't know if a packet is good or not (or rather, if broken ones are fixable) when grabbing data, should we always assume a packet is good and skip the next bytes that belong to it, or always assume its bad and find "subpackets"?

Currently a ton of time is spent on calculating crcs, even if nothing in the message has changed.
We can optimize this by caching the result of the crc inside the class, and letting the cache be invalidated whenever the message is written to, for example by overloading [] operator.