RageSoundMixBuffer.h

/* RageSoundMixBuffer - Simple audio mixing. */
 
#ifndef RAGE_SOUND_MIX_BUFFER_H
#define RAGE_SOUND_MIX_BUFFER_H
 
class RageSoundMixBuffer
{
  public:
    RageSoundMixBuffer();
    ~RageSoundMixBuffer();
 
    /* Mix the given buffer of samples. */
    void write(const float* pBuf,
               unsigned iSize,
               int iSourceStride = 1,
               int iDestStride = 1);
 
    /* Extend the buffer as if write() was called with a buffer of silence. */
    void Extend(unsigned iSamples);
 
    void read(int16_t* pBuf);
    void read(float* pBuf);
    void read_deinterlace(float** pBufs, int channels);
    float* read() { return m_pMixbuf; }
    unsigned size() const { return m_iBufUsed; }
    void SetWriteOffset(int iOffset);
 
  private:
    float* m_pMixbuf;
    unsigned m_iBufSize; /* actual allocated samples */
    unsigned m_iBufUsed; /* used samples */
    int m_iOffset;
};
 
#endif