/usr/include/spandsp/private/async.h is in libspandsp-dev 0.0.6-2+b2.
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 | /*
* SpanDSP - a series of DSP components for telephony
*
* private/async.h - Asynchronous serial bit stream encoding and decoding
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2003 Steve Underwood
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1,
* as published by the Free Software Foundation.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if !defined(_SPANDSP_PRIVATE_ASYNC_H_)
#define _SPANDSP_PRIVATE_ASYNC_H_
/*!
Asynchronous data transmit descriptor. This defines the state of a single
working instance of a byte to asynchronous serial converter, for use
in FSK modems.
*/
struct async_tx_state_s
{
/*! \brief The number of data bits per character. */
int data_bits;
/*! \brief The type of parity. */
int parity;
/*! \brief The number of stop bits per character. */
int stop_bits;
/*! \brief A pointer to the callback routine used to get characters to be transmitted. */
get_byte_func_t get_byte;
/*! \brief An opaque pointer passed when calling get_byte. */
void *user_data;
/*! \brief A current, partially transmitted, character. */
unsigned int byte_in_progress;
/*! \brief The current bit position within a partially transmitted character. */
int bitpos;
/*! \brief Parity bit. */
int parity_bit;
};
/*!
Asynchronous data receive descriptor. This defines the state of a single
working instance of an asynchronous serial to byte converter, for use
in FSK modems.
*/
struct async_rx_state_s
{
/*! \brief The number of data bits per character. */
int data_bits;
/*! \brief The type of parity. */
int parity;
/*! \brief The number of stop bits per character. */
int stop_bits;
/*! \brief TRUE if V.14 rate adaption processing should be performed. */
int use_v14;
/*! \brief A pointer to the callback routine used to handle received characters. */
put_byte_func_t put_byte;
/*! \brief An opaque pointer passed when calling put_byte. */
void *user_data;
/*! \brief A current, partially complete, character. */
unsigned int byte_in_progress;
/*! \brief The current bit position within a partially complete character. */
int bitpos;
/*! \brief Parity bit. */
int parity_bit;
/*! A count of the number of parity errors seen. */
int parity_errors;
/*! A count of the number of character framing errors seen. */
int framing_errors;
};
#endif
/*- End of file ------------------------------------------------------------*/
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