rmstdbufferpool.h

神龙卡开发原代码

/*****************************************************************
*** Copyright (c) 2001 Sigma Designs Inc. All rights reserved. ***
*****************************************************************/

/**
  @file   rmstdbufferpool.h
  @brief  

  RMbufferPool is a factory which can return a finite
  number of constructed RMbuffers.

  @author Mathieu Lacage
  @date   2001-09-24
*/

#ifndef __RMSTDBUFFERPOOL_H__
#define __RMSTDBUFFERPOOL_H__

class RM_LIBRARY_IMPORT_EXPORT RMstdBufferPool: public RMbufferPool
{
 public:	
	RMstdBufferPool(RMuint32 bufferNumber, RMuint32 bufferSize);
	RMstdBufferPool(RMuint8 *area, RMuint32 areaSize, RMuint32 bufferSize);
	
	virtual ~RMstdBufferPool(void);


	/**
	   GetObject:
	   Used by clients to get a pointer to a buffer 
	   of bytes of size objectSize.
	   This removes the object from the bufferPool.
	 */
	virtual RMbuffer *GetRMbuffer (void);

        /**
           Gets the number of available RMbuffer for next
           GetRMbufferCall. May be useful to implement a non blocking
           GetRMbuffer call.
	   
           @param void  
           @return <ReturnValue>
	*/
	RMuint32 GetFreeRMbufferCount (void);
	RMuint32 GetMaxRMbuffer (void);

	RMbuffer *ShowBufferContainingAddress(RMuint8 *address);

 private:
	RMpool m_ppool;
	RMuint32 m_bufferSize;
	RMuint8 *m_area;
	RMbool m_allocatedArea;
};

#endif // __RMSTDBUFFERPOOL_H__