include/OggStream.h

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 * Protocce Engine                                                            *
 * Part of the Crown and Cutlass Project                                      *
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#ifndef _PCCE_OGGSTREAM_H_
#define _PCCE_OGGSTREAM_H_

#include <string>
#include <boost/shared_ptr.hpp>
#include <al.h>
#include "OpenALSource.h"
#include "OggFile.h"

namespace pcce {
  
  class OggStream {
  public:
    OggStream(const std::string fileName, tOpenALSourcePtr source);
    ~OggStream();
    
    bool IsPlaying();
    
    void Play();
    void Pause();
    void Stop();
    
    void Update();
    
    tOpenALSourcePtr GetSource();
    void SetSource(tOpenALSourcePtr source);
    
  private:
    static const size_t sBufferCount = 2;
    typedef enum { ssPlaying, ssPaused, ssStopped } tStreamState;
    
    tStreamState mState;
    tOpenALSourcePtr mSource;
    OggFile mFile;
    ALenum mFormat;
    ALsizei mFreq;
    ALuint mBuffers[sBufferCount];
    unsigned int mQueuedBuffers;
    unsigned int mProcessedBuffers;
    bool mStreamActive;

    unsigned int QueuedBufferCount();
    void EmptyQueuedBuffers();
    
    unsigned int ProcessedBuffers();
    
    bool FillBuffer(ALuint& buffer);
    void QueueBuffer(const ALuint& buffer);
  };
  
  typedef boost::shared_ptr< OggStream > tOggStreamPtr;
  
}

#endif

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