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file_descriptor_source.h
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/* -*- c++ -*- */
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/*
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* Copyright 2004,2013 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef INCLUDED_GR_FILE_DESCRIPTOR_SOURCE_H
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#define INCLUDED_GR_FILE_DESCRIPTOR_SOURCE_H
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#include <
gnuradio/blocks/api.h
>
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#include <
gnuradio/sync_block.h
>
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namespace
gr {
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namespace
blocks {
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/*!
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* \brief Read stream from file descriptor.
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* \ingroup file_operators_blk
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*/
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class
BLOCKS_API
file_descriptor_source
:
virtual
public
sync_block
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{
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protected
:
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virtual
int
read_items(
char
*buf,
int
nitems) = 0;
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virtual
int
handle_residue(
char
*buf,
int
nbytes_read) = 0;
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virtual
void
flush_residue() = 0;
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public
:
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// gr::blocks::file_descriptor_source::sptr
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typedef
boost::shared_ptr<file_descriptor_source>
sptr
;
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/*!
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* Build a file descriptor source block. The provided file descriptor will
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* be closed when the sink is destroyed.
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*
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* \param itemsize item size of the incoming data stream.
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* \param fd file descriptor (as an integer).
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* \param repeat repeat the data stream continuously.
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*/
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static
sptr
make(
size_t
itemsize
,
int
fd,
bool
repeat
=
false
);
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};
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}
/* namespace blocks */
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}
/* namespace gr */
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#endif
/* INCLUDED_GR_FILE_DESCRIPTOR_SOURCE_H */
gr-blocks
include
gnuradio
blocks
file_descriptor_source.h
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