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#include <cstdint>
#include <cstdio>
#include "Vcic3_pdm.h"
#include "verilated.h"
int
pdm2pcm_cic3(const uint8_t *pdm, int64_t pdm_length, int16_t *pcm, int32_t pcm_length, uint8_t hpf_alpha, uint8_t scale_shift)
{
// FIXME: verify that output buffer is large enough
VerilatedContext *cp = new VerilatedContext;
Vcic3_pdm *top = new Vcic3_pdm{cp};
// TODO: bring back high pass filter and adjustable shift
//top->dc_alpha = hpf_alpha;
//top->scale_shift = scale_shift;
// Start clock off
top->clk = 0;
// Go through all the input data
int pcm_sample = 0;
for (int i = 0; i < pdm_length; i++) {
top->pdm_in = bool(pdm[i]);
top->clk = 1;
top->eval();
if (top->pcm_valid) {
pcm[pcm_sample++] = top->pcm_out;
}
top->clk = 0;
top->eval();
}
return pcm_sample;
}
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