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#include <assert.h>
#include "sig.h"
typedef struct ops_clamp_ctxt_t {
sig_sig_t *value, *min, *max;
} ops_clamp_ctxt_t;
static size_t ops_clamp_size(va_list ap)
{
return sizeof(ops_clamp_ctxt_t);
}
static void ops_clamp_init(void *context, va_list ap)
{
ops_clamp_ctxt_t *ctxt = context;
assert(ctxt);
ctxt->value = va_arg(ap, sig_sig_t *);
ctxt->min = va_arg(ap, sig_sig_t *);
ctxt->max = va_arg(ap, sig_sig_t *);
}
static void ops_clamp_destroy(void *context)
{
ops_clamp_ctxt_t *ctxt = context;
assert(ctxt);
sig_free(ctxt->value);
sig_free(ctxt->min);
sig_free(ctxt->max);
}
static float ops_clamp_output(void *context, unsigned ticks_ms)
{
ops_clamp_ctxt_t *ctxt = context;
float value, min, max;
assert(ctxt);
value = sig_output(ctxt->value, ticks_ms);
min = sig_output(ctxt->min, ticks_ms);
max = sig_output(ctxt->max, ticks_ms);
if (value < min)
return min;
if (value > max)
return max;
return value;
}
sig_ops_t sig_ops_clamp = {
.size = ops_clamp_size,
.init = ops_clamp_init,
.destroy = ops_clamp_destroy,
.output = ops_clamp_output,
};
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