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/*
Copyright (c) 2007-2012 iMatix Corporation
Copyright (c) 2007-2012 Other 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 i_msg_source;
// Interface to be implemented by message encoder.
struct i_encoder
{
virtual ~i_encoder () {}
// Set message producer.
virtual void set_msg_source (i_msg_source *msg_source_) = 0;
// 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.
// If offset is not NULL, it is filled by offset of the first message
// in the batch.If there's no beginning of a message in the batch,
// offset is set to -1.
virtual void get_data (unsigned char **data_, size_t *size_,
int *offset_ = NULL) = 0;
};
}
#endif
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