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/*
Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ZMQ_I_ENCODER_HPP_INCLUDED__
#define __ZMQ_I_ENCODER_HPP_INCLUDED__
#include "stdint.hpp"
namespace zmq
{
// Forward declaration
class msg_t;
// Interface to be implemented by message encoder.
struct i_encoder
{
virtual ~i_encoder () {}
// The function returns a batch of binary data. The data
// are filled to a supplied buffer. If no buffer is supplied (data_
// is NULL) encoder will provide buffer of its own.
// Function returns 0 when a new message is required.
virtual size_t encode (unsigned char **data_, size_t size) = 0;
// Load a new message into encoder.
virtual void load_msg (msg_t *msg_) = 0;
};
}
#endif
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