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/**
* @class dash::network::IConnection
* @brief The connection interface can be used to enable the download of segments through external connections.
* @details This interface enables the extension of libdash to download segment through, e.g., SPDY, CCN etc.
* @see dash::network::IChunk
*
* @author bitmovin Softwareentwicklung OG \n
* Email: libdash-dev@vicky.bitmovin.net
* @version 2.1
* @date 2013
* @copyright bitmovin Softwareentwicklung OG, All Rights Reserved \n\n
* This source code and its use and distribution, is subject to the terms
* and conditions of the applicable license agreement.
*/
#ifndef ICONNECTION_H_
#define ICONNECTION_H_
#include "config.h"
#include "IChunk.h"
#include "IDASHMetrics.h"
namespace dash
{
namespace network
{
class IConnection : public virtual dash::metrics::IDASHMetrics
{
public:
virtual ~IConnection(){}
/**
* This function should read a block of bytes from the specified chunk.
* @param data pointer to a block of memory
* @param len size of the memory block that can be used by the method
* @param chunk the dash::network::IChunk object from which data should be read
* @return amount of data that has been read
*/
virtual int Read (uint8_t *data, size_t len, IChunk *chunk) = 0;
/**
* This function should peek a block of bytes from the specified chunk.
* @param data pointer to a block of memory
* @param len size of the memory block that can be used by the method
* @param chunk the dash::network::IChunk object from which data should be peeked
* @return amount of data that has been peeked
*/
virtual int Peek (uint8_t *data, size_t len, IChunk *chunk) = 0;
/**
* This function should get the average speed of download for the specified chunk.
* It should be called after the whole chunk has been downloaded.
* @return average speed of download in bps.
*/
virtual double GetAverageDownloadingSpeed () = 0;
/**
* This function should get the time taken for the download of the specified chunk.
* It should be called after the whole chunk has been downloaded.
* @return average time of download in seconds.
*/
virtual double GetDownloadingTime () = 0;
};
}
}
#endif /* ICONNECTION_H_ */
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