bbl2csv

This is a cli frontend for blackbox-log inspired by the original blackbox_decode.

Feature comparison

	blackbox_decode	bbl2csv
Log format v1	✔️	❌
Recent Betaflight logs	❌	✔️
Raw output	✔️	❌
Write output to stdout	✔️	❌
GPS data	merged, separate, or gpx	separate
Current meter simulation	✔️	❌
IMU simulation	✔️	❌
Change output units	✔️	❌
Filter output fields	❌	✔️
Parallel log parsing	❌	✔️

Benchmarks

As of 2b28331, with this log:

$ exa -lbs size --no-time --no-permissions --no-user LOG00001.BFL
6.6Mi LOG00001.BFL
$ hyperfine -w 10 -L bin ./bbl2csv,blackbox_decode '{bin} LOG00001.BFL'
Benchmark #1: ./bbl2csv LOG00001.BFL
Time (mean ± σ): 598.2 ms ± 13.6 ms [User: 542.6 ms, System: 46.6 ms]
Range (min … max): 574.4 ms … 622.6 ms 10 runs
Benchmark #2: blackbox_decode LOG00001.BFL
Time (mean ± σ): 1.072 s ± 0.013 s [User: 1.019 s, System: 0.044 s]
Range (min … max): 1.056 s … 1.098 s 10 runs
Summary
'./bbl2csv LOG00001.BFL' ran
1.79 ± 0.05 times faster than 'blackbox_decode LOG00001.BFL'

LOG00001.BFL contains only one log. Files with multiple logs will see even larger improvements since logs are decoded in parallel using rayon.