RetroShare/libretroshare/src/ft/ftfileprovider.h

/*
 * libretroshare/src/ft ftFileProvider.h
 *
 * File Transfer for RetroShare.
 *
 * Copyright 2008 by Robert Fernie.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License Version 2 as published by the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA.
 *
 * Please report all bugs and problems to "retroshare@lunamutt.com".
 *
 */

#ifndef FT_FILE_PROVIDER_HEADER
#define FT_FILE_PROVIDER_HEADER

/* 
 * ftFileProvider.
 *
 */
#include <iostream>
#include <stdint.h>
#include "util/rsthreads.h"
#include "rsiface/rsfiles.h"

class ftFileProvider
{
public:
	ftFileProvider(std::string path, uint64_t size, std::string hash);
	virtual ~ftFileProvider();

	virtual bool 	getFileData(uint64_t offset, uint32_t &chunk_size, void *data);
	virtual bool    FileDetails(FileInfo &info);
	std::string getHash();
	uint64_t getFileSize();
	bool fileOk();

	void setPeerId(const std::string& id) ;


protected:
virtual	int initializeFileAttrs(); /* does for both */

	uint64_t    mSize;
	std::string hash;
	std::string file_name;
	FILE *fd;

	/* 
	 * Structure to gather statistics FIXME: lastRequestor - figure out a 
	 * way to get last requestor (peerID)
	 */
	std::string lastRequestor;
	uint64_t   req_loc;
	uint32_t   req_size;
	time_t    lastTS;   		// used for checking if it's alive
	time_t    lastTS_t;   	// used for estimating transfer rate.

	// these two are used for speed estimation
	float 	  transfer_rate ;
	uint32_t		total_size ;

	/* 
         * Mutex Required for stuff below 
         */
	RsMutex ftcMutex;
};


#endif // FT_FILE_PROVIDER_HEADER