DataIO.h

/* This file is Copyright 2000-2008 Meyer Sound Laboratories Inc.  See the included LICENSE.txt file for details. */

#ifndef MuscleDataIO_h
#define MuscleDataIO_h

#include "util/Socket.h"

BEGIN_NAMESPACE(muscle);
 
class DataIO : public RefCountable
{
public:
   enum {
      IO_SEEK_SET = 0,  
      IO_SEEK_CUR,      
      IO_SEEK_END,      
      NUM_IO_SEEKS      
   };

   DataIO() {/* empty */}

   virtual ~DataIO() {/* empty */}

   virtual int32 Read(void * buffer, uint32 size) = 0;

   virtual int32 Write(const void * buffer, uint32 size) = 0;

   virtual status_t Seek(int64 offset, int whence) = 0;

   virtual int64 GetPosition() const = 0;

   virtual uint64 GetOutputStallLimit() const {return MUSCLE_TIME_NEVER;}

   virtual void FlushOutput() = 0;

   virtual void Shutdown() = 0;

   virtual const SocketRef & GetSelectSocket() const = 0;

   virtual status_t GetReadByteTimeStamp(int32 whichByte, uint64 & retStamp) const {(void) whichByte; (void) retStamp; return B_ERROR;}

   virtual bool HasBufferedOutput() const {return false;}

   virtual void WriteBufferedOutput() {/* empty */}

   uint32 WriteFully(const void * buffer, uint32 size);
   
   uint32 ReadFully(void * buffer, uint32 size);

   virtual int64 GetLength();
};

typedef Ref<DataIO> DataIORef;

END_NAMESPACE(muscle);

#endif

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