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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_IMPL_H
#define INCLUDED_GR_WAVFILE_SOURCE_IMPL_H
#include <blocks/wavfile_source.h>
#include <cstdio> // for FILE
namespace gr {
namespace blocks {
class wavfile_source_impl : public wavfile_source
{
private:
FILE *d_fp;
bool d_repeat;
unsigned d_sample_rate;
int d_nchans;
int d_bytes_per_sample;
int d_first_sample_pos;
unsigned d_samples_per_chan;
unsigned d_sample_idx;
int d_normalize_shift;
int d_normalize_fac;
/*!
* \brief Convert an integer sample value to a float value within [-1;1]
*/
float convert_to_float(short int sample);
public:
wavfile_source_impl(const char *filename, bool repeat);
~wavfile_source_impl();
unsigned int sample_rate() const { return d_sample_rate; };
int bits_per_sample() const { return d_bytes_per_sample * 8; };
int channels() const { return d_nchans; };
int work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
} /* namespace blocks */
} /* namespace gr */
#endif /* INCLUDED_GR_WAVFILE_SOURCE_IMPL_H */
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