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// Copyright (C) 2016 Lukas Lalinsky
// Distributed under the MIT license, see the LICENSE file for details.
#ifndef CHROMAPRINT_FINGERPRINTER_CONFIGURATION_H_
#define CHROMAPRINT_FINGERPRINTER_CONFIGURATION_H_
#include <algorithm>
#include "classifier.h"
#include "chromaprint.h"
namespace chromaprint {
static const int DEFAULT_SAMPLE_RATE = 11025;
class FingerprinterConfiguration
{
public:
FingerprinterConfiguration()
: m_num_classifiers(0), m_classifiers(0), m_remove_silence(false), m_silence_threshold(0), m_frame_size(0), m_frame_overlap(0)
{
}
int num_filter_coefficients() const
{
return m_num_filter_coefficients;
}
const double *filter_coefficients() const
{
return m_filter_coefficients;
}
void set_filter_coefficients(const double *filter_coefficients, int size)
{
m_filter_coefficients = filter_coefficients;
m_num_filter_coefficients = size;
}
int num_classifiers() const
{
return m_num_classifiers;
}
const Classifier *classifiers() const
{
return m_classifiers;
}
int max_filter_width() const {
return m_max_filter_width;
}
void set_classifiers(const Classifier *classifiers, int size)
{
m_classifiers = classifiers;
m_num_classifiers = size;
m_max_filter_width = 0;
for (int i = 0; i < size; i++) {
m_max_filter_width = std::max(m_max_filter_width, classifiers[i].filter().width());
}
}
bool interpolate() const
{
return m_interpolate;
}
void set_interpolate(bool value)
{
m_interpolate = value;
}
bool remove_silence() const
{
return m_remove_silence;
}
void set_remove_silence(bool value)
{
m_remove_silence = value;
}
int silence_threshold() const
{
return m_silence_threshold;
}
void set_silence_threshold(int value)
{
m_silence_threshold = value;
}
int frame_size() const
{
return m_frame_size;
}
void set_frame_size(int value)
{
m_frame_size = value;
}
int frame_overlap() const
{
return m_frame_overlap;
}
void set_frame_overlap(int value)
{
m_frame_overlap = value;
}
int sample_rate() const {
return DEFAULT_SAMPLE_RATE;
}
int item_duration() const {
return m_frame_size - m_frame_overlap;
}
double item_duration_in_seconds() const {
return item_duration() * 1.0 / sample_rate();
}
int delay() const {
return ((m_num_filter_coefficients - 1) + (m_max_filter_width - 1)) * item_duration() + m_frame_overlap;
}
double delay_in_seconds() const {
return delay() * 1.0 / sample_rate();
}
private:
int m_num_classifiers;
int m_max_filter_width;
const Classifier *m_classifiers;
int m_num_filter_coefficients;
const double *m_filter_coefficients;
bool m_interpolate;
bool m_remove_silence;
int m_silence_threshold;
int m_frame_size;
int m_frame_overlap;
};
// Used for http://oxygene.sk/lukas/2010/07/introducing-chromaprint/
// Trained on a randomly selected test data
class FingerprinterConfigurationTest1 : public FingerprinterConfiguration
{
public:
FingerprinterConfigurationTest1();
};
// Trained on 60k pairs based on eMusic samples (mp3)
class FingerprinterConfigurationTest2 : public FingerprinterConfiguration
{
public:
FingerprinterConfigurationTest2();
};
// Trained on 60k pairs based on eMusic samples with interpolation enabled (mp3)
class FingerprinterConfigurationTest3 : public FingerprinterConfiguration
{
public:
FingerprinterConfigurationTest3();
};
// Same as v2, but trims leading silence
class FingerprinterConfigurationTest4 : public FingerprinterConfigurationTest2
{
public:
FingerprinterConfigurationTest4();
};
// Same as v2, but with 2x more precise sampling
class FingerprinterConfigurationTest5 : public FingerprinterConfigurationTest2
{
public:
FingerprinterConfigurationTest5();
};
inline FingerprinterConfiguration *CreateFingerprinterConfiguration(int algorithm)
{
switch (algorithm) {
case CHROMAPRINT_ALGORITHM_TEST1:
return new FingerprinterConfigurationTest1();
case CHROMAPRINT_ALGORITHM_TEST2:
return new FingerprinterConfigurationTest2();
case CHROMAPRINT_ALGORITHM_TEST3:
return new FingerprinterConfigurationTest3();
case CHROMAPRINT_ALGORITHM_TEST4:
return new FingerprinterConfigurationTest4();
case CHROMAPRINT_ALGORITHM_TEST5:
return new FingerprinterConfigurationTest5();
}
return 0;
}
}; // namespace chromaprint
#endif
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