mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-25 03:01:03 +00:00
375 lines
7 KiB
C
375 lines
7 KiB
C
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <math.h>
|
|
#include <sys/time.h>
|
|
|
|
#include <resample.h>
|
|
|
|
#define AMP 16000
|
|
#define I_RATE 48000
|
|
#define O_RATE 44100
|
|
/*#define O_RATE 24000 */
|
|
|
|
/*#define test_func(x) 1 */
|
|
/*#define test_func(x) sin(2*M_PI*(x)*10) */
|
|
/*#define test_func(x) sin(2*M_PI*(x)*(x)*1000) */
|
|
#define test_func(x) sin(2*M_PI*(x)*(x)*12000)
|
|
|
|
short i_buf[I_RATE * 2 * 2];
|
|
short o_buf[O_RATE * 2 * 2];
|
|
|
|
static int i_offset;
|
|
static int o_offset;
|
|
|
|
FILE *out;
|
|
|
|
void test_res1 (void);
|
|
void test_res2 (void);
|
|
void test_res3 (void);
|
|
void test_res4 (void);
|
|
void test_res5 (void);
|
|
void test_res6 (void);
|
|
void test_res7 (void);
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
out = fopen ("out", "w");
|
|
|
|
test_res7 ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
void *
|
|
get_buffer (void *priv, unsigned int size)
|
|
{
|
|
void *ret;
|
|
|
|
ret = ((void *) o_buf) + o_offset;
|
|
o_offset += size;
|
|
return ret;
|
|
}
|
|
|
|
struct timeval start_time;
|
|
void
|
|
start_timer (void)
|
|
{
|
|
gettimeofday (&start_time, NULL);
|
|
/*printf("start %ld.%06ld\n",start_time.tv_sec,start_time.tv_usec); */
|
|
}
|
|
|
|
void
|
|
end_timer (void)
|
|
{
|
|
struct timeval end_time;
|
|
double diff;
|
|
|
|
gettimeofday (&end_time, NULL);
|
|
/*printf("end %ld.%06ld\n",end_time.tv_sec,end_time.tv_usec); */
|
|
diff = (end_time.tv_sec - start_time.tv_sec) +
|
|
1e-6 * (end_time.tv_usec - start_time.tv_usec);
|
|
|
|
printf ("time %g\n", diff);
|
|
|
|
}
|
|
|
|
void
|
|
test_res1 (void)
|
|
{
|
|
resample_t *r;
|
|
int i;
|
|
double sum10k, sum22k;
|
|
double f;
|
|
int n10k, n22k;
|
|
double x;
|
|
|
|
for (i = 0; i < I_RATE; i++) {
|
|
i_buf[i * 2 + 0] = rint (AMP * test_func ((double) i / I_RATE));
|
|
/*i_buf[i*2+1] = rint(AMP * test_func((double)i/I_RATE)); */
|
|
i_buf[i * 2 + 1] = (i < 1000) ? AMP : 0;
|
|
}
|
|
|
|
r = malloc (sizeof (resample_t));
|
|
memset (r, 0, sizeof (resample_t));
|
|
|
|
r->i_rate = I_RATE;
|
|
r->o_rate = O_RATE;
|
|
/*r->method = RESAMPLE_SINC_SLOW; */
|
|
r->method = RESAMPLE_SINC;
|
|
r->channels = 2;
|
|
/*r->verbose = 1; */
|
|
r->filter_length = 64;
|
|
r->get_buffer = get_buffer;
|
|
|
|
resample_init (r);
|
|
|
|
start_timer ();
|
|
#define blocked
|
|
#ifdef blocked
|
|
for (i = 0; i + 256 < I_RATE; i += 256) {
|
|
resample_scale (r, i_buf + i * 2, 256 * 2 * 2);
|
|
}
|
|
if (I_RATE - i) {
|
|
resample_scale (r, i_buf + i * 2, (I_RATE - i) * 2 * 2);
|
|
}
|
|
#else
|
|
resample_scale (r, i_buf, I_RATE * 2 * 2);
|
|
#endif
|
|
end_timer ();
|
|
|
|
for (i = 0; i < O_RATE; i++) {
|
|
f = AMP * test_func ((double) i / O_RATE);
|
|
/*f = rint(AMP*test_func((double)i/O_RATE)); */
|
|
fprintf (out, "%d %d %d %g %g\n", i,
|
|
o_buf[2 * i + 0], o_buf[2 * i + 1], f, o_buf[2 * i + 0] - f);
|
|
}
|
|
|
|
sum10k = 0;
|
|
sum22k = 0;
|
|
n10k = 0;
|
|
n22k = 0;
|
|
for (i = 0; i < O_RATE; i++) {
|
|
f = AMP * test_func ((double) i / O_RATE);
|
|
/*f = rint(AMP*test_func((double)i/O_RATE)); */
|
|
x = o_buf[2 * i + 0] - f;
|
|
if (((0.5 * i) / O_RATE * I_RATE) < 10000) {
|
|
sum10k += x * x;
|
|
n10k++;
|
|
}
|
|
if (((0.5 * i) / O_RATE * I_RATE) < 22050) {
|
|
sum22k += x * x;
|
|
n22k++;
|
|
}
|
|
}
|
|
printf ("average error 10k=%g 22k=%g\n",
|
|
sqrt (sum10k / n10k), sqrt (sum22k / n22k));
|
|
}
|
|
|
|
|
|
void
|
|
test_res2 (void)
|
|
{
|
|
functable_t *t;
|
|
int i;
|
|
double x;
|
|
double f1, f2;
|
|
|
|
t = malloc (sizeof (*t));
|
|
memset (t, 0, sizeof (*t));
|
|
|
|
t->start = -50.0;
|
|
t->offset = 1;
|
|
t->len = 100;
|
|
|
|
t->func_x = functable_sinc;
|
|
t->func_dx = functable_dsinc;
|
|
|
|
functable_init (t);
|
|
|
|
for (i = 0; i < 1000; i++) {
|
|
x = -50.0 + 0.1 * i;
|
|
f1 = functable_sinc (NULL, x);
|
|
f2 = functable_eval (t, x);
|
|
fprintf (out, "%d %g %g %g\n", i, f1, f2, f1 - f2);
|
|
}
|
|
}
|
|
|
|
void
|
|
test_res3 (void)
|
|
{
|
|
functable_t *t;
|
|
int i;
|
|
double x;
|
|
double f1, f2;
|
|
int n = 1;
|
|
|
|
t = malloc (sizeof (*t));
|
|
memset (t, 0, sizeof (*t));
|
|
|
|
t->start = -50.0;
|
|
t->offset = 1.0 / n;
|
|
t->len = 100 * n;
|
|
|
|
t->func_x = functable_sinc;
|
|
t->func_dx = functable_dsinc;
|
|
|
|
t->func2_x = functable_window_std;
|
|
t->func2_dx = functable_window_dstd;
|
|
|
|
t->scale = 1.0;
|
|
t->scale2 = 1.0 / (M_PI * 16);
|
|
|
|
functable_init (t);
|
|
|
|
for (i = 0; i < 1000 * n; i++) {
|
|
x = -50.0 + 0.1 / n * i;
|
|
f1 = functable_sinc (NULL, t->scale * x) *
|
|
functable_window_std (NULL, t->scale2 * x);
|
|
f2 = functable_eval (t, x);
|
|
fprintf (out, "%d %g %g %g\n", i, f1, f2, f2 - f1);
|
|
}
|
|
}
|
|
|
|
double
|
|
sinc_poly (double x)
|
|
{
|
|
#define INV3FAC 1.66666666666666666e-1
|
|
#define INV5FAC 8.33333333333333333e-3
|
|
#define INV7FAC 1.984126984e-4
|
|
#define INV9FAC 2.755731922e-6
|
|
#define INV11FAC 2.505210839e-8
|
|
double x2 = x * x;
|
|
|
|
return 1 - x2 * INV3FAC + x2 * x2 * INV5FAC - x2 * x2 * x2 * INV7FAC;
|
|
/*+ x2 * x2 * x2 * x2 * INV9FAC */
|
|
/*- x2 * x2 * x2 * x2 * x2 * INV11FAC; */
|
|
}
|
|
|
|
void
|
|
test_res4 (void)
|
|
{
|
|
int i;
|
|
double x, f1, f2;
|
|
|
|
for (i = 1; i < 100; i++) {
|
|
x = 0.01 * i;
|
|
f1 = 1 - sin (x) / x;
|
|
f2 = 1 - sinc_poly (x);
|
|
|
|
fprintf (out, "%g %.20g %.20g %.20g\n", x, f1, f2, f2 - f1);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
test_res5 (void)
|
|
{
|
|
int i;
|
|
double sum;
|
|
|
|
start_timer ();
|
|
sum = 0;
|
|
for (i = 0; i < I_RATE; i++) {
|
|
sum += i_buf[i * 2];
|
|
}
|
|
end_timer ();
|
|
i_buf[0] = sum;
|
|
}
|
|
|
|
|
|
void
|
|
short_to_double (double *d, short *x)
|
|
{
|
|
*d = *x;
|
|
}
|
|
|
|
void
|
|
short_to_float (float *f, short *x)
|
|
{
|
|
*f = *x;
|
|
}
|
|
|
|
void
|
|
float_to_double (double *f, float *x)
|
|
{
|
|
*f = *x;
|
|
}
|
|
|
|
void
|
|
double_to_short (short *f, double *x)
|
|
{
|
|
*f = *x;
|
|
}
|
|
|
|
double res6_tmp[1000];
|
|
|
|
void
|
|
test_res6 (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < I_RATE; i++) {
|
|
i_buf[i] = rint (AMP * test_func ((double) i / I_RATE));
|
|
}
|
|
|
|
conv_double_short_ref (res6_tmp, i_buf, 1000);
|
|
for (i = 0; i < 1000; i++) {
|
|
res6_tmp[i] *= 3.0;
|
|
}
|
|
conv_short_double_ppcasm (o_buf, res6_tmp, 1000);
|
|
|
|
for (i = 0; i < 1000; i++) {
|
|
fprintf (out, "%d %d %g %d\n", i, i_buf[i], res6_tmp[i], o_buf[i]);
|
|
}
|
|
}
|
|
|
|
void
|
|
test_res7 (void)
|
|
{
|
|
resample_t *r;
|
|
int i;
|
|
double sum10k, sum22k;
|
|
double f;
|
|
int n10k, n22k;
|
|
double x;
|
|
|
|
for (i = 0; i < I_RATE; i++) {
|
|
i_buf[i] = rint (AMP * test_func ((double) i / I_RATE));
|
|
}
|
|
|
|
r = malloc (sizeof (resample_t));
|
|
memset (r, 0, sizeof (resample_t));
|
|
|
|
r->i_rate = I_RATE;
|
|
r->o_rate = O_RATE;
|
|
/*r->method = RESAMPLE_SINC_SLOW; */
|
|
r->method = RESAMPLE_SINC;
|
|
r->channels = 1;
|
|
/*r->verbose = 1; */
|
|
r->filter_length = 64;
|
|
r->get_buffer = get_buffer;
|
|
|
|
resample_init (r);
|
|
|
|
start_timer ();
|
|
#define blocked
|
|
#ifdef blocked
|
|
for (i = 0; i + 256 < I_RATE; i += 256) {
|
|
resample_scale (r, i_buf + i, 256 * 2);
|
|
}
|
|
if (I_RATE - i) {
|
|
resample_scale (r, i_buf + i, (I_RATE - i) * 2);
|
|
}
|
|
#else
|
|
resample_scale (r, i_buf, I_RATE * 2);
|
|
#endif
|
|
end_timer ();
|
|
|
|
for (i = 0; i < O_RATE; i++) {
|
|
f = AMP * test_func ((double) i / O_RATE);
|
|
/*f = rint(AMP*test_func((double)i/O_RATE)); */
|
|
fprintf (out, "%d %d %d %g %g\n", i, o_buf[i], 0, f, o_buf[i] - f);
|
|
}
|
|
|
|
sum10k = 0;
|
|
sum22k = 0;
|
|
n10k = 0;
|
|
n22k = 0;
|
|
for (i = 0; i < O_RATE; i++) {
|
|
f = AMP * test_func ((double) i / O_RATE);
|
|
/*f = rint(AMP*test_func((double)i/O_RATE)); */
|
|
x = o_buf[i] - f;
|
|
if (((0.5 * i) / O_RATE * I_RATE) < 10000) {
|
|
sum10k += x * x;
|
|
n10k++;
|
|
}
|
|
if (((0.5 * i) / O_RATE * I_RATE) < 22050) {
|
|
sum22k += x * x;
|
|
n22k++;
|
|
}
|
|
}
|
|
printf ("average error 10k=%g 22k=%g\n",
|
|
sqrt (sum10k / n10k), sqrt (sum22k / n22k));
|
|
}
|