diff options
| -rw-r--r-- | src/libs/sig/Makefile.am | 2 | ||||
| -rw-r--r-- | src/libs/sig/ops_const.c | 43 | ||||
| -rw-r--r-- | src/libs/sig/sig.h | 1 |
3 files changed, 45 insertions, 1 deletions
diff --git a/src/libs/sig/Makefile.am b/src/libs/sig/Makefile.am index 4787b5a..4c41f41 100644 --- a/src/libs/sig/Makefile.am +++ b/src/libs/sig/Makefile.am @@ -1,3 +1,3 @@ noinst_LIBRARIES = libsig.a -libsig_a_SOURCES = ops_mult.c ops_sin.c sig.c sig.h +libsig_a_SOURCES = ops_const.c ops_mult.c ops_sin.c sig.c sig.h libsig_a_CPPFLAGS = -I@top_srcdir@/src diff --git a/src/libs/sig/ops_const.c b/src/libs/sig/ops_const.c new file mode 100644 index 0000000..aa7e862 --- /dev/null +++ b/src/libs/sig/ops_const.c @@ -0,0 +1,43 @@ +#include <assert.h> +#include <math.h> + +#include "sig.h" + + +typedef struct ops_const_ctxt_t { + float value; +} ops_const_ctxt_t; + + +static size_t ops_const_size(va_list ap) +{ + return sizeof(ops_const_ctxt_t); +} + + +static void ops_const_init(void *context, va_list ap) +{ + ops_const_ctxt_t *ctxt = context; + + assert(ctxt); + + ctxt->value = va_arg(ap, double); +} + + +static float ops_const_output(void *context, unsigned ticks_ms) +{ + ops_const_ctxt_t *ctxt = context; + + assert(ctxt); + + return ctxt->value; +} + + +sig_ops_t sig_ops_const = { + .size = ops_const_size, + .init = ops_const_init, + .output = ops_const_output, +}; + diff --git a/src/libs/sig/sig.h b/src/libs/sig/sig.h index cd22d4d..f377f00 100644 --- a/src/libs/sig/sig.h +++ b/src/libs/sig/sig.h @@ -17,6 +17,7 @@ sig_t * sig_new(const sig_ops_t *ops, ...); sig_t * sig_free(sig_t *sig); float sig_output(sig_t *sig, unsigned ticks_ms); +extern sig_ops_t sig_ops_const; extern sig_ops_t sig_ops_sin; /* TODO: |