* dh-compat 10
* no dh-systemd dependency
* backport version for buster
* teach prepare-build about bullseye
* update stretch maintainer address
* update Jenkinsfile (this will be broken until the builder machine is upgraded)
disables adaptive gain.
This is needed for the case where a v5 package with an unmodified
config file is upgraded. dpkg will install the v6 default config
file automatically so it will already be a v6 config by the time
that upgrade-config runs, but we do still need to go in and
disable adaptive gain.
The legacy -10 value is still supported for compatbility with old
configs, but new configs should just select an appropriate gain e.g.
60dB.
rtlsdr default gain continues to be the highest regular gain step (~ 49.6dB)
on upgrade to 6.0. (Not extensively tested yet)
We do this for two reasons:
1) the config file layout is completely different, it's error-prone
and tedious to force the user to manually transfer their customizations
on upgrade;
2) if there are user modifications to the config file, an upgrade triggered
remotely via piaware will prefer to keep the original config file intact
rather than installing the new version, and the old version just won't
work correctly with the new infrastructure.
Now we have specific config options for different features rather
than just a big list of command-line options. You can still provide
custom options via EXTRA_OPTIONS or OVERRIDE_OPTIONS.
Also adds adaptive gain settings, and a "slow cpu" setting which
can turn on cpu-reducing options automatically when a slower (armv6)
CPU is in use.
* Switch all conversion routines to use starch.
main user-visible changes:
* ensure you check out submodules ('git clone --recurse-submodules")
* --version shows the CPU features and DSP implementations in use
* --wisdom allows overriding of the built-in architecture wisdom
* --dcfilter no longer supported
* "starch-benchmark" binary will benchmark all options on the
current machine and can produce a wisdom file to feed to
the --wisdom option
If you have a usecase for --dcfilter, please get in touch and
let me know - it's an edge case and for now there's no starch/DSP
support for it, but support can be written if needed.
In almost all cases the new conversion routines are slightly or
substantially faster than the old conversion routines. The only case
that is slower is SC16/SC16Q11 on a Pi 0, which is around 10% slower
due to changing from heavily approximated lookup tables to higher
quality results (but SC16 is probably already out of reach of a Pi 0)
* No need to build with SC16Q11_TABLE_BITS any more
* Add oneoff/uc8_capture_stats
(reads a UC8 capture; measures min/max/mean I and Q)
* Switch UC8 conversion to 127.4 center, 128 range.
Looking at actual UC8 captures from a RTL2832, the mean I and Q
are actually at 127.4, so use that as the zero point.
This means that the resulting I/Q maximum values could be as large as
127.6. Switch to 128 for simplicity.
* Switch to the new UC8 zero offset in benchmarks, fix some bugs
* Fix some bugs in SC16/SC16Q11 validation, tighten the max error requirements
* Ditch UC8 approximation path, add a NEON VRQSQRTE path.
* Tweak the SC16 exact path, add a new impl that uses a mix of
u32 & floats.
* SC16Q11 impl tweaks:
* add a u32->float exact path
* ditch the approximation path
* add a NEON VRSQRTE path
* add a 12-bit table path (using the full signed I/Q value, not absolute value)
* Ditch SC16 approximation path, add NEON vrsqrte path
* Add oneoff/dsp_error_measurement
This runs sample input through the DSP functions that are
allowed to be inexact and dumps the results as a TSV suitable for
feeding to gnuplot to look at the actual errors.
* Update make clean, make wisdom targets
* Update wisdom based on benchmarking
* Preserve the raw wisdom benchmark data
* Update to latest starch
* Update .gitignore for new wisdom files
* Update starch generated code
* Build starch-benchmark as part of the 'all' target
* Use wisdom from /etc/dump1090-fa/wisdom.local if present
* Package starch-benchmark and a helper script to generate local wisdom data
* Remove submodules in preparation for importing them directly
* Import cpu_features v0.6.0 from https://github.com/google/cpu_features/releases/tag/v0.6.0
* Import starch at commit a725c8491dc33a321565d451b385131e589d8490
from https://github.com/flightaware/starch
reduce dependency requirements a little.
(Ideally we'd have some sort of module system here, and split
the dependencies out nicely into separate packages, but that's a
problem for other day; for now I can live with custom packages
having the same name as the full build, since we'll never
distribute them ourselves)
eric1tran
Oliver Jowett
Eric Tran