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/* -*- c++ -*- */
/*
* Copyright 2004,2008,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_GR_WAVFILE_SOURCE_H
#define INCLUDED_GR_WAVFILE_SOURCE_H
#include <gnuradio/blocks/api.h>
#include <gnuradio/sync_block.h>
namespace gr {
namespace blocks {
/*!
* \brief Read stream from a Microsoft PCM (.wav) file, output floats
* \ingroup audio_blk
*
* \details
* Unless otherwise called, values are within [-1;1].
* Check gr_make_wavfile_source() for extra info.
*/
class BLOCKS_API wavfile_source : virtual public sync_block
{
public:
// gr::blocks::wavfile_source::sptr
typedef boost::shared_ptr<wavfile_source> sptr;
static sptr make(const char* filename, bool repeat = false);
/*!
* \brief Read the sample rate as specified in the wav file header
*/
virtual unsigned int sample_rate() const = 0;
/*!
* \brief Return the number of bits per sample as specified in
* the wav file header. Only 8 or 16 bit are supported here.
*/
virtual int bits_per_sample() const = 0;
/*!
* \brief Return the number of channels in the wav file as
* specified in the wav file header. This is also the max number
* of outputs you can have.
*/
virtual int channels() const = 0;
};
} /* namespace blocks */
} /* namespace gr */
#endif /* INCLUDED_GR_WAVFILE_SOURCE_H */
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