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#include <assert.h>
#include "sig.h"
typedef struct ops_inv_ctxt_t {
sig_sig_t *x;
} ops_inv_ctxt_t;
static size_t ops_inv_size(va_list ap)
{
return sizeof(ops_inv_ctxt_t);
}
/* inverts 0-1 inputs to 1-0,
* assumes inputs will stay within 0-1 range
*/
static void ops_inv_init(void *context, va_list ap)
{
ops_inv_ctxt_t *ctxt = context;
assert(ctxt);
ctxt->x = va_arg(ap, sig_sig_t *);
}
static void ops_inv_destroy(void *context)
{
ops_inv_ctxt_t *ctxt = context;
assert(ctxt);
sig_free(ctxt->x);
}
static float ops_inv_output(void *context, unsigned ticks_ms)
{
ops_inv_ctxt_t *ctxt = context;
assert(ctxt);
return 1.f - sig_output(ctxt->x, ticks_ms);
}
sig_ops_t sig_ops_inv = {
.size = ops_inv_size,
.init = ops_inv_init,
.destroy = ops_inv_destroy,
.output = ops_inv_output,
};
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