GNU Radio 3.6.5.1 C++ API
gr_file_source.h
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/* -*- c++ -*- */
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/*
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* Copyright 2004 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_SOURCE_H
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#define INCLUDED_GR_FILE_SOURCE_H
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#include <
gr_core_api.h
>
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#include <
gr_sync_block.h
>
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#include <boost/thread/mutex.hpp>
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class
gr_file_source
;
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typedef
boost::shared_ptr<gr_file_source>
gr_file_source_sptr
;
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GR_CORE_API
gr_file_source_sptr
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gr_make_file_source
(
size_t
itemsize
,
const
char
*filename,
bool
repeat =
false
);
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/*!
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* \brief Read stream from file
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* \ingroup source_blk
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*/
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class
GR_CORE_API
gr_file_source
:
public
gr_sync_block
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{
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private
:
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size_t
d_itemsize;
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FILE *d_fp;
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FILE *d_new_fp;
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bool
d_repeat;
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bool
d_updated;
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protected
:
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gr_file_source
(
size_t
itemsize
,
const
char
*filename,
bool
repeat);
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void
do_update();
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boost::mutex
fp_mutex
;
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public
:
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/*!
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* \brief Create a file source.
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*
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* Opens \p filename as a source of items into a flowgraph. The data
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* is expected to be in binary format, item after item. The \p
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* itemsize of the block determines the conversion from bits to
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* items.
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*
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* If \p repeat is turned on, the file will repeat the file after
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* it's reached the end.
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*
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* \param itemsize the size of each item in the file, in bytes
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* \param filename name of the file to source from
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* \param repeat repeat file from start
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*/
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friend
GR_CORE_API
gr_file_source_sptr
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gr_make_file_source
(
size_t
itemsize,
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const
char
*filename,
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bool
repeat);
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~
gr_file_source
();
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int
work
(
int
noutput_items,
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gr_vector_const_void_star
&input_items,
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gr_vector_void_star
&output_items);
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/*!
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* \brief Seek file to \p seek_point relative to \p whence
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*
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* \param seek_point sample offset in file
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* \param whence one of SEEK_SET, SEEK_CUR, SEEK_END (man fseek)
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*/
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bool
seek(
long
seek_point,
int
whence);
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/*!
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* \brief Opens a new file.
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*
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* \param filename name of the file to source from
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* \param repeat repeat file from start
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*/
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void
open(
const
char
*filename,
bool
repeat);
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/*!
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* \brief Close the file handle.
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*/
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void
close();
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};
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#endif
/* INCLUDED_GR_FILE_SOURCE_H */
gnuradio-core
src
lib
io
gr_file_source.h
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