RageSoundReader_Resample_Good.h

/* RageSoundReader_Resample_Good - fast audio resampling. */
 
#ifndef RAGE_SOUND_READER_RESAMPLE_GOOD_H
#define RAGE_SOUND_READER_RESAMPLE_GOOD_H
 
#include "RageSoundReader_Filter.h"
 
class RageSoundResampler_Polyphase;
 
class RageSoundReader_Resample_Good : public RageSoundReader_Filter
{
  public:
    /* We own source. */
    RageSoundReader_Resample_Good(RageSoundReader* pSource, int iSampleRate);
    RageSoundReader_Resample_Good(const RageSoundReader_Resample_Good& cpy);
    int SetPosition(int iFrame) override;
    int Read(float* pBuf, int iFrames) override;
    ~RageSoundReader_Resample_Good() override;
    RageSoundReader_Resample_Good* Copy() const override;
    bool SetProperty(const std::string& sProperty, float fValue) override;
    int GetNextSourceFrame() const override;
    float GetStreamToSourceRatio() const override;
 
    void SetRate(float fRatio);
 
    float GetRate() const;
 
    int GetSampleRate() const override { return m_iSampleRate; }
 
  private:
    void Reset();
    void ReopenResampler();
    void GetFactors(int& iDownFactor, int& iUpFactor) const;
 
    std::vector<RageSoundResampler_Polyphase*> m_apResamplers; /* one per channel */
 
    int m_iSampleRate;
    float m_fRate;
};
 
#endif