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License: MIT License
Small program that computes and plots spectrograms, either in a live window or to disk, with support for stdin input.
License: MIT License
$ ./specgram -lq -x 1 -y 100
[INFO] Creating 1024-wide FFTW plan
[INFO] Scale decibel, unit FS, bounds [-120, 0]
specgram: /home/rimio/git/specgram/src/renderer.cpp:396: std::__cxx11::list<std::tuple<double, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > Renderer::GetNiceTicks(double, double, const string&, unsigned int, unsigned int, bool): Assertion `fval <= v_max' failed.
Aborted (core dumped)
LiveOutput
caches the Configuration
object, but also caches ColorMap and ValueMap. Maybe split relevant stuff from Configuration
?Renderer
caches Configuration
, maybe shouldnt?Renderer::*fft_area*
stuff refer to the spectrogram fields, so should be named accordingly.const auto MustDumpToStdout() const
-> auto MustDumpToStdout() const
Allow dumping of PNG image data to stdout, where the user can display it with imagemagick
. E.g.:
specgram -i infile - | display
While good for latency during high throughput scenarios, it's not necessarily nice to keep a CPU at 100% while waiting for input.
Explore the ideas of:
std::this_thread::sleep_for
in the two cases where we wait for input within the main loopFirst sentence under Display Options
reads You will notice that there isn't much difference between the output of the above command and the others
which makes no sense, as the rx_sdr
example has been added.
then you can use the -q
-> then you can use -q
Fix these.
Build fails under ArchLinux, cannot find std::clamp()
.
Unit testing for testable things like ColorMap
, FFT
, InputParser
, InputReader
, parts of Renderer
, ValueMap
, WindowFunction
.
The jet colormap is a classic, but I have to admit it looks like crap for live (scrolling) spectrograms.
A cool but easy on the eyes colormap is required.
Mismatch:
project (specgram VERSION 1.0.0 LANGUAGES CXX)
# Version
set (VERSION_MAJOR 0)
set (VERSION_MINOR 9)
set (VERSION_PATCH 2)
Log info message when file is written to disk.
The program's logging needs are rather simplistic, so there's no need to keep spdlog
as a dependency, especially after the incompatibility issues with fmt 8.0.0
.
Write own logging routine.
Allow definition of custom scale strings using the -s, --scale
options.
dBFS
will remain a special case and default option, as it uses the dBFSValueMap
which clamps the values to an upper limit of 0.
Add new LinearValueMap
and dBValueMap
value maps which map the values accordingly.
If the string begins with db
or dB
then it defaults to dBValueMap
and the rest of the string is used for display purposes. Limits can be specified with, maybe, commas? I.e. -s dBm,20,-20
specifies the limits for a dBValueMap
.
Otherwise it uses a LinearValueMap
with the limits specified as above.
Header files should explain way better the purpose and workings of the module.
Write functional tests that make sure the overall output to known inputs is correct.
As per one user's request:
(also, I wonder if it would make sense for specgram to stop whenever the stream ends; I'm guessing around AsyncInputReader::ReachedEOF(). Since, once we get an EOF on stdin, there should be no way to get more data in... right?)
This seems to be a default behavior in multiple CLI tools, so it should be supported by specgram as well.
Rename all factory methods to something like Build(...)
.
On latest Gentoo install, using i3
, Esc
key does not close window.
Run valgrind on a bunch of functional tests.
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