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#include <sigc++/sigc++.h>
#include "interpolation_test.h"
CPPUNIT_TEST_SUITE_REGISTRATION(InterpolationTest);
using namespace std;
using namespace ARDOUR;
void
InterpolationTest::linearInterpolationTest ()
{
samplecnt_t result = 0;
// cout << "\nLinear Interpolation Test\n";
// cout << "\nSpeed: 1/3";
for (int i = 0; 3*i < NUM_SAMPLES - 1024;) {
linear.set_speed (double(1.0)/double(3.0));
linear.set_target_speed (double(1.0)/double(3.0));
result = linear.interpolate (0, 1024, input + i, output + i*3);
i += result;
}
// cout << "\nSpeed: 1.0";
linear.reset();
linear.set_speed (1.0);
linear.set_target_speed (linear.speed());
result = linear.interpolate (0, NUM_SAMPLES, input, output);
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES * linear.speed()), result);
for (int i = 0; i < NUM_SAMPLES; i += INTERVAL) {
CPPUNIT_ASSERT_EQUAL (1.0f, output[i]);
}
// cout << "\nSpeed: 0.5";
linear.reset();
linear.set_speed (0.5);
linear.set_target_speed (linear.speed());
result = linear.interpolate (0, NUM_SAMPLES, input, output);
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES * linear.speed()), result);
for (int i = 0; i < NUM_SAMPLES; i += (INTERVAL / linear.speed() +0.5)) {
CPPUNIT_ASSERT_EQUAL (1.0f, output[i]);
}
// cout << "\nSpeed: 0.2";
linear.reset();
linear.set_speed (0.2);
linear.set_target_speed (linear.speed());
result = linear.interpolate (0, NUM_SAMPLES, input, output);
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES * linear.speed()), result);
// cout << "\nSpeed: 0.02";
linear.reset();
linear.set_speed (0.02);
linear.set_target_speed (linear.speed());
result = linear.interpolate (0, NUM_SAMPLES, input, output);
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES * linear.speed()), result);
// cout << "\nSpeed: 0.002";
linear.reset();
linear.set_speed (0.002);
linear.set_target_speed (linear.speed());
result = linear.interpolate (0, NUM_SAMPLES, input, output);
linear.speed();
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES * linear.speed()), result);
// cout << "\nSpeed: 2.0";
linear.reset();
linear.set_speed (2.0);
linear.set_target_speed (linear.speed());
result = linear.interpolate (0, NUM_SAMPLES / 2, input, output);
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES / 2 * linear.speed()), result);
for (int i = 0; i < NUM_SAMPLES / 2; i += (INTERVAL / linear.speed() +0.5)) {
CPPUNIT_ASSERT_EQUAL (1.0f, output[i]);
}
// cout << "\nSpeed: 10.0";
linear.set_speed (10.0);
linear.set_target_speed (linear.speed());
result = linear.interpolate (0, NUM_SAMPLES / 10, input, output);
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES / 10 * linear.speed()), result);
for (int i = 0; i < NUM_SAMPLES / 10; i += (INTERVAL / linear.speed() +0.5)) {
CPPUNIT_ASSERT_EQUAL (1.0f, output[i]);
}
/*
for (int i=0; i < NUM_SAMPLES; ++i) {
cout << i << " " << output[i] << endl;
}
*/
}
void
InterpolationTest::cubicInterpolationTest ()
{
samplecnt_t result = 0;
// cout << "\nCubic Interpolation Test\n";
// cout << "\nSpeed: 1/3";
for (int i = 0; 3*i < NUM_SAMPLES - 1024;) {
cubic.set_speed (double(1.0)/double(3.0));
cubic.set_target_speed (double(1.0)/double(3.0));
result = cubic.interpolate (0, 1024, input + i, output + i*3);
i += result;
}
// cout << "\nSpeed: 1.0";
cubic.reset();
cubic.set_speed (1.0);
cubic.set_target_speed (cubic.speed());
result = cubic.interpolate (0, NUM_SAMPLES, input, output);
CPPUNIT_ASSERT_EQUAL (result, cubic.interpolate (0, NUM_SAMPLES, NULL, NULL));
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES * cubic.speed()), result);
for (int i = 0; i < NUM_SAMPLES; i += INTERVAL) {
CPPUNIT_ASSERT_EQUAL (1.0f, output[i]);
}
// cout << "\nSpeed: 0.5";
cubic.reset();
cubic.set_speed (0.5);
cubic.set_target_speed (cubic.speed());
result = cubic.interpolate (0, NUM_SAMPLES, input, output);
CPPUNIT_ASSERT_EQUAL (result, cubic.interpolate (0, NUM_SAMPLES, NULL, NULL));
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES * cubic.speed()), result);
for (int i = 0; i < NUM_SAMPLES; i += (INTERVAL / cubic.speed() +0.5)) {
CPPUNIT_ASSERT_EQUAL (1.0f, output[i]);
}
// cout << "\nSpeed: 0.2";
cubic.reset();
cubic.set_speed (0.2);
cubic.set_target_speed (cubic.speed());
result = cubic.interpolate (0, NUM_SAMPLES, input, output);
CPPUNIT_ASSERT_EQUAL (result, cubic.interpolate (0, NUM_SAMPLES, NULL, NULL));
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES * cubic.speed()), result);
// cout << "\nSpeed: 0.02";
cubic.reset();
cubic.set_speed (0.02);
cubic.set_target_speed (cubic.speed());
result = cubic.interpolate (0, NUM_SAMPLES, input, output);
CPPUNIT_ASSERT_EQUAL (result, cubic.interpolate (0, NUM_SAMPLES, NULL, NULL));
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES * cubic.speed()), result);
/* This one fails due too error accumulation
cout << "\nSpeed: 0.002";
cubic.reset();
cubic.set_speed (0.002);
cubic.set_target_speed (cubic.speed());
result = cubic.interpolate (0, NUM_SAMPLES, input, output);
cubic.speed();
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES * cubic.speed()), result);
*/
// cout << "\nSpeed: 2.0";
cubic.reset();
cubic.set_speed (2.0);
cubic.set_target_speed (cubic.speed());
result = cubic.interpolate (0, NUM_SAMPLES / 2, input, output);
CPPUNIT_ASSERT_EQUAL (result, cubic.interpolate (0, NUM_SAMPLES / 2, NULL, NULL));
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES / 2 * cubic.speed()), result);
for (int i = 0; i < NUM_SAMPLES / 2; i += (INTERVAL / cubic.speed() +0.5)) {
CPPUNIT_ASSERT_EQUAL (1.0f, output[i]);
}
// cout << "\nSpeed: 10.0";
cubic.set_speed (10.0);
cubic.set_target_speed (cubic.speed());
result = cubic.interpolate (0, NUM_SAMPLES / 10, input, output);
CPPUNIT_ASSERT_EQUAL (result, cubic.interpolate (0, NUM_SAMPLES / 10, NULL, NULL));
CPPUNIT_ASSERT_EQUAL ((samplecnt_t)(NUM_SAMPLES / 10 * cubic.speed()), result);
for (int i = 0; i < NUM_SAMPLES / 10; i += (INTERVAL / cubic.speed() +0.5)) {
CPPUNIT_ASSERT_EQUAL (1.0f, output[i]);
}
}
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