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/*****************************************************************************
**
** Name: DataQueue.h
**
** Description: Store data bytes in a variable-size queue.
**
** Copyright (c) 2012, Broadcom Corp., All Rights Reserved.
** Proprietary and confidential.
**
*****************************************************************************/
#pragma once
#include "NfcJniUtil.h"
#include "gki.h"
#include "Mutex.h"
#include <list>
class DataQueue
{
public:
/*******************************************************************************
**
** Function: DataQueue
**
** Description: Initialize member variables.
**
** Returns: None.
**
*******************************************************************************/
DataQueue ();
/*******************************************************************************
**
** Function: ~DataQueue
**
** Description: Release all resources.
**
** Returns: None.
**
*******************************************************************************/
~DataQueue ();
/*******************************************************************************
**
** Function: enqueue
**
** Description: Append data to the queue.
** data: array of bytes
** dataLen: length of the data.
**
** Returns: True if ok.
**
*******************************************************************************/
bool enqueue (UINT8* data, UINT16 dataLen);
/*******************************************************************************
**
** Function: dequeue
**
** Description: Retrieve and remove data from the front of the queue.
** buffer: array to store the data.
** bufferMaxLen: maximum size of the buffer.
** actualLen: actual length of the data.
**
** Returns: True if ok.
**
*******************************************************************************/
bool dequeue (UINT8* buffer, UINT16 bufferMaxLen, UINT16& actualLen);
/*******************************************************************************
**
** Function: isEmpty
**
** Description: Whether the queue is empty.
**
** Returns: True if empty.
**
*******************************************************************************/
bool isEmpty();
private:
struct tHeader
{
UINT16 mDataLen; //number of octets of data
UINT16 mOffset; //offset of the first octet of data
};
typedef std::list<tHeader*> Queue;
Queue mQueue;
Mutex mMutex;
};
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