59 lines
1.2 KiB
C
59 lines
1.2 KiB
C
#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#define CELT_C
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#include <stdio.h>
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#include <stdlib.h>
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#include "vq.c"
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#include "cwrs.c"
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#include "entcode.c"
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#include "entenc.c"
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#include "entdec.c"
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#include "mathops.c"
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#include "bands.h"
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#include <math.h>
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#define MAX_SIZE 100
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int ret=0;
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void test_rotation(int N, int K)
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{
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int i;
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double err = 0, ener = 0, snr, snr0;
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opus_val16 x0[MAX_SIZE];
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opus_val16 x1[MAX_SIZE];
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for (i=0;i<N;i++)
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x1[i] = x0[i] = rand()%32767-16384;
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exp_rotation(x1, N, 1, 1, K, SPREAD_NORMAL);
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for (i=0;i<N;i++)
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{
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err += (x0[i]-(double)x1[i])*(x0[i]-(double)x1[i]);
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ener += x0[i]*(double)x0[i];
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}
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snr0 = 20*log10(ener/err);
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err = ener = 0;
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exp_rotation(x1, N, -1, 1, K, SPREAD_NORMAL);
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for (i=0;i<N;i++)
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{
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err += (x0[i]-(double)x1[i])*(x0[i]-(double)x1[i]);
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ener += x0[i]*(double)x0[i];
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}
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snr = 20*log10(ener/err);
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printf ("SNR for size %d (%d pulses) is %f (was %f without inverse)\n", N, K, snr, snr0);
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if (snr < 60 || snr0 > 20)
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{
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fprintf(stderr, "FAIL!\n");
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ret = 1;
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}
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}
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int main(void)
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{
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ALLOC_STACK;
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test_rotation(15, 3);
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test_rotation(23, 5);
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test_rotation(50, 3);
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test_rotation(80, 1);
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return ret;
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}
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