/usr/include/gnuradio/blocks/wavfile.h is in gnuradio-dev 3.7.9.1-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | /* -*- c++ -*- */
/*
* Copyright 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.
*/
// This file stores all the RIFF file type knowledge for the wavfile_*
// gnuradio/blocks.
#ifndef _GR_WAVFILE_H_
#define _GR_WAVFILE_H_
#include <gnuradio/blocks/api.h>
#include <cstdio>
namespace gr {
namespace blocks {
/*!
* \brief Read signal information from a given WAV file.
*
* \param[in] fp File pointer to an opened, empty file.
* \param[out] sample_rate Stores the sample rate [S/s]
* \param[out] nchans Number of channels
* \param[out] bytes_per_sample Bytes per sample, can either be 1 or 2 (corresponding o
* 8 or 16 bit samples, respectively)
* \param[out] first_sample_pos Number of the first byte containing a sample. Use this
* with fseek() to jump from the end of the file to the
* first sample when in repeat mode.
* \param[out] samples_per_chan Number of samples per channel
* \return True on a successful read, false if the file could not be read or is
* not a valid WAV file.
*/
BLOCKS_API bool wavheader_parse(FILE *fp,
unsigned int &sample_rate,
int &nchans,
int &bytes_per_sample,
int &first_sample_pos,
unsigned int &samples_per_chan);
/*!
* \brief Read one sample from an open WAV file at the current position.
*
* \details
* Takes care of endianness.
*/
BLOCKS_API short int wav_read_sample(FILE *fp, int bytes_per_sample);
/*!
* \brief Write a valid RIFF file header
*
* Note: Some header values are kept blank because they're usually
* not known a-priori (file and chunk lengths). Use
* gri_wavheader_complete() to fill these in.
*/
BLOCKS_API bool wavheader_write(FILE *fp,
unsigned int sample_rate,
int nchans,
int bytes_per_sample);
/*!
* \brief Write one sample to an open WAV file at the current position.
*
* \details
* Takes care of endianness.
*/
BLOCKS_API void wav_write_sample(FILE *fp, short int sample, int bytes_per_sample);
/*!
* \brief Complete a WAV header
*
* \details
* Note: The stream position is changed during this function. If
* anything needs to be written to the WAV file after calling this
* function (which shouldn't happen), you need to fseek() to the
* end of the file (or whereever).
*
* \param[in] fp File pointer to an open WAV file with a blank header
* \param[in] byte_count Length of all samples written to the file in bytes.
*/
BLOCKS_API bool wavheader_complete(FILE *fp, unsigned int byte_count);
} /* namespace blocks */
} /* namespace gr */
#endif /* _GR_WAVFILE_H_ */
|