RageSoundReader_Preload.h

/* RageSoundReader_Preload - Preload sounds from another reader into memory. */
 
#ifndef RAGE_SOUND_READER_PRELOAD
#define RAGE_SOUND_READER_PRELOAD
 
#include "RageSoundReader.h"
 
class RageSoundReader_Preload : public RageSoundReader
{
  public:
    RageSoundReader_Preload();
    /* Return true if the sound has been preloaded, in which case source will
     * be deleted.  Otherwise, return false. */
    bool Open(RageSoundReader* pSource);
    int GetLength() const override;
    int GetLength_Fast() const override;
    int SetPosition(int iFrame) override;
    int Read(float* pBuffer, int iLength) override;
    int GetSampleRate() const override { return m_iSampleRate; }
    unsigned GetNumChannels() const override { return m_iChannels; }
    int GetNextSourceFrame() const override;
    float GetStreamToSourceRatio() const override { return m_fRate; }
    std::string GetError() const override { return ""; }
 
    /* Return the total number of copies of this sound.  (If 1 is returned,
     * this is the last copy.) */
    int GetReferenceCount() const;
 
    RageSoundReader_Preload* Copy() const override;
    ~RageSoundReader_Preload() override = default;
 
    /* Attempt to preload a sound.  pSound must be rewound. */
    static bool PreloadSound(RageSoundReader*& pSound);
 
  private:
    std::shared_ptr<std::string> m_Buffer;
    bool m_bBufferIs16Bit{ false };
 
    /* Bytes: */
    int m_iPosition{ 0 };
 
    int GetTotalFrames() const;
 
    int m_iSampleRate{ 0 };
    unsigned m_iChannels{ 0 };
    float m_fRate{ 0.0f };
};
 
#endif