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| author | Vito Caputo <vcaputo@pengaru.com> | 2020-02-03 00:29:09 -0800 |
|---|---|---|
| committer | Vito Caputo <vcaputo@pengaru.com> | 2020-02-03 00:37:50 -0800 |
| commit | ba74a824658f7f59add288d28006ff48bf46b963 (patch) | |
| tree | de09e33f3487a20319863bdae964f4ad5c3b5666 /src/libs/sig/Makefile.am | |
| parent | f07b311173e1231f6c0c85a47d6068de7aa00761 (diff) | |
libs/sig: introduce a signal generator abstraction
This adds a small framework of sorts for creating and composing signal
generators.
Two generators are implemented at this time; sig_ops_sin and sig_ops_mult
sig_ops_sin accepts a hz variable and will produce a sine wave of that
frequency.
sig_ops_mult accepts two sig_t generators and multiplies their outputs
Callers may construct their own sig_ops_t ops structs and supply them to
sig_new(), but it's expected that libs/sig will grow a collection of
commonly used generators which can then be used by simply passing their
sig_ops_$foo to sig_new().
See the test code at the bottom of libs/sig/sig.c for some contrived
sample usage. Note by composing multiple sig_ops_sin generators with
a sig_ops_mult generator, one can already easily construct a synth-like
LFO generator.
Some obvious todos are to add triangle/sawtooth/square wave generators.
More compositional generators may be interesting as well, like additive
and subtractive for example. Those will need to implement clipping, as
it's expected that the generators *always* stay within unity (0-1).
No modules use this yet, but I expect to wire this up to rtv for driving
knobs.
Diffstat (limited to 'src/libs/sig/Makefile.am')
| -rw-r--r-- | src/libs/sig/Makefile.am | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/libs/sig/Makefile.am b/src/libs/sig/Makefile.am new file mode 100644 index 0000000..4787b5a --- /dev/null +++ b/src/libs/sig/Makefile.am @@ -0,0 +1,3 @@ +noinst_LIBRARIES = libsig.a +libsig_a_SOURCES = ops_mult.c ops_sin.c sig.c sig.h +libsig_a_CPPFLAGS = -I@top_srcdir@/src |