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#include <cppunit/extensions/HelperMacros.h>
#include "../src/chresampler.h"
#include <unistd.h>
#define BUFSZ 500
static float round(float a) { return a<0.5?0:1; }
class test_resampler : public CppUnit::TestFixture
{
CPPUNIT_TEST_SUITE(test_resampler);
CPPUNIT_TEST(resampling);
CPPUNIT_TEST(resampling_buffer_sizes);
CPPUNIT_TEST_SUITE_END();
public:
void setUp() {}
void tearDown() {}
void resampling()
{
CHResampler r;
CPPUNIT_ASSERT_EQUAL(1.0, r.ratio());
r.setup(44100, 48000);
CPPUNIT_ASSERT_EQUAL(44100.0/48000.0, r.ratio());
float in[BUFSZ];
for(int i = 0; i < BUFSZ; i++) in[i] = 0;
in[100] = 1.0;
float out[BUFSZ];
r.setInputSamples(in, sizeof(in) / sizeof(float));
r.setOutputSamples(out, sizeof(out) / sizeof(float));
r.process();
CPPUNIT_ASSERT_EQUAL((size_t)0, r.getInputSampleCount());
int outidx = -1;
int inidx = -1;
for(int i = 0; i < BUFSZ - (int)r.getOutputSampleCount(); i++) {
if(in[i] == 1.0) inidx = i;
if(round(out[i]) == 1.0) outidx = i;
}
CPPUNIT_ASSERT(inidx != -1);
CPPUNIT_ASSERT(outidx != -1);
}
void resampling_buffer_sizes()
{
CHResampler r;
CPPUNIT_ASSERT_EQUAL(1.0, r.ratio());
double infs = 24000;
double outfs = 48000;
r.setup(infs, outfs);
CPPUNIT_ASSERT_EQUAL(infs / outfs, r.ratio());
float in[BUFSZ];
float out[(int)(BUFSZ / r.ratio())];
r.setOutputSamples(out, 1);
while(r.getOutputSampleCount()) {
r.setInputSamples(in, 1);
r.process();
}
r.setInputSamples(in, sizeof(in) / sizeof(float));
r.setOutputSamples(out, sizeof(out) / sizeof(float));
r.process();
CPPUNIT_ASSERT_EQUAL((size_t)0, r.getInputSampleCount());
CPPUNIT_ASSERT_EQUAL((size_t)0, r.getOutputSampleCount());
}
};
CPPUNIT_TEST_SUITE_REGISTRATION(test_resampler);
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