Mercurial > hg > audiostuff
annotate spandsp-0.0.6pre17/src/spandsp/hdlc.h @ 6:22a74b01a099 default tip
implement more meaningful test program
author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
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date | Fri, 25 Jun 2010 16:14:50 +0200 |
parents | 26cd8f1ef0b1 |
children |
rev | line source |
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4
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import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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1 /* |
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import spandsp-0.0.6pre17
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2 * SpanDSP - a series of DSP components for telephony |
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import spandsp-0.0.6pre17
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3 * |
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4 * hdlc.h |
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5 * |
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6 * Written by Steve Underwood <steveu@coppice.org> |
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7 * |
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8 * Copyright (C) 2003 Steve Underwood |
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9 * |
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10 * All rights reserved. |
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11 * |
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import spandsp-0.0.6pre17
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12 * This program is free software; you can redistribute it and/or modify |
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13 * it under the terms of the GNU Lesser General Public License version 2.1, |
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14 * as published by the Free Software Foundation. |
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15 * |
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import spandsp-0.0.6pre17
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16 * This program is distributed in the hope that it will be useful, |
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import spandsp-0.0.6pre17
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17 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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import spandsp-0.0.6pre17
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19 * GNU Lesser General Public License for more details. |
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20 * |
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21 * You should have received a copy of the GNU Lesser General Public |
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import spandsp-0.0.6pre17
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22 * License along with this program; if not, write to the Free Software |
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23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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24 * |
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import spandsp-0.0.6pre17
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25 * $Id: hdlc.h,v 1.45 2009/06/02 16:03:56 steveu Exp $ |
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26 */ |
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27 |
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28 /*! \file */ |
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29 |
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import spandsp-0.0.6pre17
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30 /*! \page hdlc_page HDLC |
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31 |
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32 \section hdlc_page_sec_1 What does it do? |
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33 The HDLC module provides bit stuffing, destuffing, framing and deframing, |
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import spandsp-0.0.6pre17
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34 according to the HDLC protocol. It also provides 16 and 32 bit CRC generation |
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35 and checking services for HDLC frames. |
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36 |
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37 HDLC may not be a DSP function, but is needed to accompany several DSP components. |
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38 |
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import spandsp-0.0.6pre17
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39 \section hdlc_page_sec_2 How does it work? |
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40 */ |
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41 |
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42 #if !defined(_SPANDSP_HDLC_H_) |
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import spandsp-0.0.6pre17
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43 #define _SPANDSP_HDLC_H_ |
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44 |
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45 /*! |
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46 HDLC_MAXFRAME_LEN is the maximum length of a stuffed HDLC frame, excluding the CRC. |
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47 */ |
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48 #define HDLC_MAXFRAME_LEN 400 |
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49 |
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50 typedef void (*hdlc_frame_handler_t)(void *user_data, const uint8_t *pkt, int len, int ok); |
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51 typedef void (*hdlc_underflow_handler_t)(void *user_data); |
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52 |
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53 /*! |
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54 HDLC receive descriptor. This contains all the state information for an HDLC receiver. |
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55 */ |
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56 typedef struct hdlc_rx_state_s hdlc_rx_state_t; |
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57 |
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58 /*! |
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59 HDLC received data statistics. |
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60 */ |
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61 typedef struct |
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62 { |
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63 /*! \brief The number of bytes of good frames received (CRC not included). */ |
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64 unsigned long int bytes; |
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65 /*! \brief The number of good frames received. */ |
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66 unsigned long int good_frames; |
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67 /*! \brief The number of frames with CRC errors received. */ |
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68 unsigned long int crc_errors; |
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69 /*! \brief The number of too short and too long frames received. */ |
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70 unsigned long int length_errors; |
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71 /*! \brief The number of HDLC aborts received. */ |
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72 unsigned long int aborts; |
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73 } hdlc_rx_stats_t; |
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74 |
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75 /*! |
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76 HDLC transmit descriptor. This contains all the state information for an |
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77 HDLC transmitter. |
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78 */ |
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79 typedef struct hdlc_tx_state_s hdlc_tx_state_t; |
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80 |
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81 #if defined(__cplusplus) |
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82 extern "C" |
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83 { |
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84 #endif |
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85 |
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86 /*! \brief Initialise an HDLC receiver context. |
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87 \param s A pointer to an HDLC receiver context. |
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88 \param crc32 TRUE to use ITU CRC32. FALSE to use ITU CRC16. |
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89 \param report_bad_frames TRUE to request the reporting of bad frames. |
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90 \param framing_ok_threshold The number of back-to-back flags needed to |
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91 start the framing OK condition. This may be used where a series of |
26cd8f1ef0b1
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92 flag octets is used as a preamble, such as in the T.30 protocol. |
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93 \param handler The function to be called when a good HDLC frame is received. |
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94 \param user_data An opaque parameter for the callback routine. |
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95 \return A pointer to the HDLC receiver context. |
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96 */ |
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97 SPAN_DECLARE(hdlc_rx_state_t *) hdlc_rx_init(hdlc_rx_state_t *s, |
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98 int crc32, |
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99 int report_bad_frames, |
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100 int framing_ok_threshold, |
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101 hdlc_frame_handler_t handler, |
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102 void *user_data); |
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103 |
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104 /*! Change the put_bit function associated with an HDLC receiver context. |
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105 \brief Change the put_bit function associated with an HDLC receiver context. |
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106 \param s A pointer to an HDLC receiver context. |
26cd8f1ef0b1
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107 \param handler The function to be called when a good HDLC frame is received. |
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108 \param user_data An opaque parameter for the callback routine. |
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|
109 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
110 SPAN_DECLARE(void) hdlc_rx_set_frame_handler(hdlc_rx_state_t *s, hdlc_frame_handler_t handler, void *user_data); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
111 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
112 /*! Change the status report function associated with an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
113 \brief Change the status report function associated with an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
114 \param s A pointer to an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
115 \param handler The callback routine used to report status changes. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
116 \param user_data An opaque parameter for the callback routine. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
117 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
118 SPAN_DECLARE(void) hdlc_rx_set_status_handler(hdlc_rx_state_t *s, modem_rx_status_func_t handler, void *user_data); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
119 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
120 /*! Release an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
121 \brief Release an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
122 \param s A pointer to an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
123 \return 0 for OK */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
124 SPAN_DECLARE(int) hdlc_rx_release(hdlc_rx_state_t *s); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
125 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
126 /*! Free an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
127 \brief Free an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
128 \param s A pointer to an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
129 \return 0 for OK */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
130 SPAN_DECLARE(int) hdlc_rx_free(hdlc_rx_state_t *s); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
131 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
132 /*! \brief Set the maximum frame length for an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
133 \param s A pointer to an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
134 \param max_len The maximum permitted length of a frame. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
135 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
136 SPAN_DECLARE(void) hdlc_rx_set_max_frame_len(hdlc_rx_state_t *s, size_t max_len); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
137 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
138 /*! \brief Set the octet counting report interval. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
139 \param s A pointer to an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
140 \param interval The interval, in octets. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
141 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
142 SPAN_DECLARE(void) hdlc_rx_set_octet_counting_report_interval(hdlc_rx_state_t *s, |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
143 int interval); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
144 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
145 /*! \brief Get the current receive statistics. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
146 \param s A pointer to an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
147 \param t A pointer to the buffer for the statistics. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
148 \return 0 for OK, else -1. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
149 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
150 SPAN_DECLARE(int) hdlc_rx_get_stats(hdlc_rx_state_t *s, |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
151 hdlc_rx_stats_t *t); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
152 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
153 /*! \brief Put a single bit of data to an HDLC receiver. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
154 \param s A pointer to an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
155 \param new_bit The bit. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
156 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
157 SPAN_DECLARE_NONSTD(void) hdlc_rx_put_bit(hdlc_rx_state_t *s, int new_bit); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
158 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
159 /*! \brief Put a byte of data to an HDLC receiver. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
160 \param s A pointer to an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
161 \param new_byte The byte of data. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
162 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
163 SPAN_DECLARE_NONSTD(void) hdlc_rx_put_byte(hdlc_rx_state_t *s, int new_byte); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
164 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
165 /*! \brief Put a series of bytes of data to an HDLC receiver. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
166 \param s A pointer to an HDLC receiver context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
167 \param buf The buffer of data. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
168 \param len The length of the data in the buffer. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
169 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
170 SPAN_DECLARE_NONSTD(void) hdlc_rx_put(hdlc_rx_state_t *s, const uint8_t buf[], int len); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
171 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
172 /*! \brief Initialise an HDLC transmitter context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
173 \param s A pointer to an HDLC transmitter context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
174 \param crc32 TRUE to use ITU CRC32. FALSE to use ITU CRC16. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
175 \param inter_frame_flags The minimum flag octets to insert between frames (usually one). |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
176 \param progressive TRUE if frame creation works in progressive mode. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
177 \param handler The callback function called when the HDLC transmitter underflows. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
178 \param user_data An opaque parameter for the callback routine. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
179 \return A pointer to the HDLC transmitter context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
180 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
181 SPAN_DECLARE(hdlc_tx_state_t *) hdlc_tx_init(hdlc_tx_state_t *s, |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
182 int crc32, |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
183 int inter_frame_flags, |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
184 int progressive, |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
185 hdlc_underflow_handler_t handler, |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
186 void *user_data); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
187 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
188 SPAN_DECLARE(int) hdlc_tx_release(hdlc_tx_state_t *s); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
189 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
190 SPAN_DECLARE(int) hdlc_tx_free(hdlc_tx_state_t *s); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
191 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
192 /*! \brief Set the maximum frame length for an HDLC transmitter context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
193 \param s A pointer to an HDLC transmitter context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
194 \param max_len The maximum length. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
195 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
196 SPAN_DECLARE(void) hdlc_tx_set_max_frame_len(hdlc_tx_state_t *s, size_t max_len); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
197 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
198 /*! \brief Transmit a frame. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
199 \param s A pointer to an HDLC transmitter context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
200 \param frame A pointer to the frame to be transmitted. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
201 \param len The length of the frame to be transmitted. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
202 \return 0 if the frame was accepted for transmission, else -1. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
203 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
204 SPAN_DECLARE(int) hdlc_tx_frame(hdlc_tx_state_t *s, const uint8_t *frame, size_t len); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
205 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
206 /*! \brief Corrupt the frame currently being transmitted, by giving it the wrong CRC. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
207 \param s A pointer to an HDLC transmitter context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
208 \return 0 if the frame was corrupted, else -1. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
209 */ |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
210 SPAN_DECLARE(int) hdlc_tx_corrupt_frame(hdlc_tx_state_t *s); |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
211 |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
212 /*! \brief Transmit a specified quantity of flag octets, typically as a preamble. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
213 \param s A pointer to an HDLC transmitter context. |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff
changeset
|
214 \param len The length of the required period of flags, in flag octets. If len is zero this |
26cd8f1ef0b1
import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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215 requests that HDLC transmission be terminated when the buffers have fully |
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import spandsp-0.0.6pre17
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216 drained. |
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import spandsp-0.0.6pre17
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217 \return 0 if the flags were accepted for transmission, else -1. |
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import spandsp-0.0.6pre17
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218 */ |
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import spandsp-0.0.6pre17
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219 SPAN_DECLARE(int) hdlc_tx_flags(hdlc_tx_state_t *s, int len); |
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import spandsp-0.0.6pre17
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220 |
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import spandsp-0.0.6pre17
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221 /*! \brief Send an abort. |
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import spandsp-0.0.6pre17
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222 \param s A pointer to an HDLC transmitter context. |
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import spandsp-0.0.6pre17
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223 \return 0 if the frame was aborted, else -1. |
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import spandsp-0.0.6pre17
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224 */ |
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import spandsp-0.0.6pre17
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225 SPAN_DECLARE(int) hdlc_tx_abort(hdlc_tx_state_t *s); |
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import spandsp-0.0.6pre17
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226 |
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import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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227 /*! \brief Get the next bit for transmission. |
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import spandsp-0.0.6pre17
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228 \param s A pointer to an HDLC transmitter context. |
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import spandsp-0.0.6pre17
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229 \return The next bit for transmission. |
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import spandsp-0.0.6pre17
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230 */ |
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import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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231 SPAN_DECLARE_NONSTD(int) hdlc_tx_get_bit(hdlc_tx_state_t *s); |
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import spandsp-0.0.6pre17
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232 |
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import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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233 /*! \brief Get the next byte for transmission. |
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import spandsp-0.0.6pre17
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234 \param s A pointer to an HDLC transmitter context. |
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import spandsp-0.0.6pre17
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235 \return The next byte for transmission. |
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import spandsp-0.0.6pre17
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236 */ |
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import spandsp-0.0.6pre17
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237 SPAN_DECLARE_NONSTD(int) hdlc_tx_get_byte(hdlc_tx_state_t *s); |
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import spandsp-0.0.6pre17
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238 |
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import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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239 /*! \brief Get the next sequence of bytes for transmission. |
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import spandsp-0.0.6pre17
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240 \param s A pointer to an HDLC transmitter context. |
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import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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241 \param buf The buffer for the data. |
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import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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242 \param max_len The number of bytes to get. |
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import spandsp-0.0.6pre17
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243 \return The number of bytes actually got. |
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import spandsp-0.0.6pre17
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244 */ |
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import spandsp-0.0.6pre17
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245 SPAN_DECLARE_NONSTD(int) hdlc_tx_get(hdlc_tx_state_t *s, uint8_t buf[], size_t max_len); |
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246 |
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import spandsp-0.0.6pre17
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247 #if defined(__cplusplus) |
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import spandsp-0.0.6pre17
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248 } |
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import spandsp-0.0.6pre17
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249 #endif |
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import spandsp-0.0.6pre17
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250 |
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import spandsp-0.0.6pre17
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251 #endif |
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import spandsp-0.0.6pre17
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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252 /*- End of file ------------------------------------------------------------*/ |