Chris@0: #ifndef _LOWFREQ_H_
Chris@0: #define _LOWFREQ_H_
Chris@0: 
Chris@0: #include <vamp-sdk/Plugin.h>
Chris@0: 
Chris@4: #include "base/Window.h"
Chris@4: 
Chris@0: using std::string;
Chris@0: 
Chris@2: class Resampler;
Chris@2: class FFT;
Chris@0: 
Chris@0: class LowFreq : public Vamp::Plugin
Chris@0: {
Chris@0: public:
Chris@0:     LowFreq(float inputSampleRate);
Chris@0:     virtual ~LowFreq();
Chris@0: 
Chris@0:     string getIdentifier() const;
Chris@0:     string getName() const;
Chris@0:     string getDescription() const;
Chris@0:     string getMaker() const;
Chris@0:     int getPluginVersion() const;
Chris@0:     string getCopyright() const;
Chris@0: 
Chris@0:     InputDomain getInputDomain() const;
Chris@0:     size_t getPreferredBlockSize() const;
Chris@0:     size_t getPreferredStepSize() const;
Chris@0:     size_t getMinChannelCount() const;
Chris@0:     size_t getMaxChannelCount() const;
Chris@0: 
Chris@0:     ParameterList getParameterDescriptors() const;
Chris@0:     float getParameter(string identifier) const;
Chris@0:     void setParameter(string identifier, float value);
Chris@0: 
Chris@0:     ProgramList getPrograms() const;
Chris@0:     string getCurrentProgram() const;
Chris@0:     void selectProgram(string name);
Chris@0: 
Chris@0:     OutputList getOutputDescriptors() const;
Chris@0: 
Chris@0:     bool initialise(size_t channels, size_t stepSize, size_t blockSize);
Chris@0:     void reset();
Chris@0: 
Chris@0:     FeatureSet process(const float *const *inputBuffers,
Chris@0:                        Vamp::RealTime timestamp);
Chris@0: 
Chris@0:     FeatureSet getRemainingFeatures();
Chris@0: 
Chris@0: protected:
Chris@2:     Feature processColumn();
Chris@4:     void advance();
Chris@4: 
Chris@4:     int getTargetSampleRate() const;
Chris@4:     int getTargetStepSize() const;
Chris@5:     int getFFTSize() const;
Chris@5:     int getFirstOutputBin() const;
Chris@5:     float getOutputBinFrequency(int i) const;
Chris@2: 
Chris@5:     float m_fmin;
Chris@5:     float m_fmax;
Chris@2:     int m_n;
Chris@4:     float m_overlap;
Chris@2: 
Chris@2:     int m_blockSize;
Chris@2: 
Chris@2:     Resampler *m_resampler;
Chris@2:     FFT *m_fft;
Chris@4:     Window<double> *m_window;
Chris@2:     std::vector<double> m_buffer;
Chris@0: };
Chris@0: 
Chris@0: 
Chris@0: 
Chris@0: #endif