FreeCalypso > hg > fc-tourmaline
annotate src/cs/layer1/gtt_include/ctm/ctm_receiver.h @ 46:09cdd5bf04e4
Condat display driver fix for 96x64 BW framebuffer
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 17 Oct 2020 22:50:15 +0000 |
parents | 4e78acac3d88 |
children |
rev | line source |
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0
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src/{condat,cs,gpf,nucleus}: import from Selenite
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1 /* |
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2 ******************************************************************************* |
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3 * |
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4 * COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH |
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5 * 90411 NUERNBERG, GERMANY, Tel Int + 49 911 5217 100 |
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6 * |
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7 * The program(s) may be used and/or copied only with the |
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8 * written permission from Ericsson or in accordance |
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9 * with the terms and conditions stipulated in the agreement or |
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10 * contract under which the program(s) have been supplied. |
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11 * |
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12 ******************************************************************************* |
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13 * |
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14 * File : ctm_receiver.h |
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15 * Author : EEDN/RV Matthias Doerbecker |
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16 * Tested Platforms : Sun Solaris, Windows NT 4.0 |
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17 * Description : header file for ctm_receiver.c |
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18 * |
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19 * Changes since October 13, 2000: |
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20 * - added reset function reset_ctm_receiver() |
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21 * |
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22 * $Log: $ |
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23 * |
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24 ******************************************************************************* |
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25 */ |
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26 #ifndef ctm_receiver_h |
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27 #define ctm_receiver_h "$Id: $" |
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28 |
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29 /* |
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30 ******************************************************************************* |
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31 * INCLUDE FILES |
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32 ******************************************************************************* |
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33 */ |
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34 |
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35 #include "init_interleaver.h" |
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36 //#include "tonedemod.h" |
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37 #include "wait_for_sync.h" |
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38 #include "conv_poly.h" |
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39 #include "viterbi.h" |
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40 #include "ctm_typedefs.h" |
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41 #include "fifo.h" |
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42 |
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43 #include <stdlib.h> |
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44 #include <stdio.h> |
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45 |
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46 |
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47 /* ******************************************************************/ |
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48 /* Type definitions for variables that contain all states of the */ |
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49 /* Cellular Text Telephone Modem (CTM) Transmitter and Receiver, */ |
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50 /* respectively. */ |
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51 /* ******************************************************************/ |
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52 |
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53 typedef struct { |
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54 /* simple variables */ |
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55 WORD16 samplingCorrection; |
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56 WORD16 numBitsWithLowReliability; |
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57 WORD16 cntIdleSymbols; |
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58 WORD16 numDeintlBits; |
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59 WORD16 cntRXBits; |
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60 WORD16 syncCorrect; |
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61 WORD16 cntUnreliableGrossBits; |
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62 WORD16 intl_delay; |
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63 |
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64 /* structs (state types) */ |
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65 fifo_state_t rx_bits_fifo_state; |
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66 fifo_state_t octet_fifo_state; |
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67 fifo_state_t net_bits_fifo_state; |
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68 //demod_state_t tonedemod_state; |
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69 // interleaver_state_t intl_state; |
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70 interleaver_state_t deintl_state; |
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71 wait_for_sync_state_t wait_state; |
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72 viterbi_t viterbi_state; |
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73 |
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74 /* vectors (not to be allocated) */ |
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75 #if (NUM_MUTE_ROWS>0) |
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76 WORD16 mutePositions[intlvB*NUM_MUTE_ROWS]; |
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77 #else |
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78 WORD16 mutePositions[1]; |
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79 #endif |
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80 |
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81 /* vectors (to be allocated in init_ctm_receiver()) */ |
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82 WORD16 *waitSyncOut; |
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83 WORD16 *deintlOut; |
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84 |
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85 } rx_state_t; |
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86 |
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87 |
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88 |
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89 |
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90 /***********************************************************************/ |
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91 /* init_ctm_receiver() */ |
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92 /* ******************* */ |
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93 /* Initialization of the CTM Receiver. */ |
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94 /* */ |
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95 /* output vaiables: */ |
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96 /* rx_state : pointer to a variable of rx_state_t containing the */ |
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97 /* initialized states of the receiver */ |
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98 /***********************************************************************/ |
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99 |
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100 void init_ctm_receiver(rx_state_t* rx_state); |
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101 |
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102 /* |
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103 *********************************************************************** |
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104 * Shutdown_ctm_receiver() * |
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105 * *********************** * |
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106 * Shutdown of the CTM Receiver. * |
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107 * * |
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108 * Input variables: * |
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109 * rx_state : pointer to a variable of rx_state_t containing the * |
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110 * initialized states of the receiver * |
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111 *********************************************************************** |
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112 */ |
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113 void Shutdown_ctm_receiver(rx_state_t* rx_state); |
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114 |
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115 /* |
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116 *********************************************************************** |
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117 * reset_ctm_receiver() * |
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118 * ******************** * |
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119 * Reset of the Cellular Text Telephone Modem receiver, state * |
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120 * machines and buffer pointers. * |
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121 * * |
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122 * Input variables: * |
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123 * rx_state : pointer to a variable of rx_state_t containing the * |
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124 * initialized states of the receiver * |
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125 *********************************************************************** |
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126 */ |
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127 void reset_ctm_receiver(rx_state_t* rx_state); |
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128 |
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129 |
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130 /***************************************************************************/ |
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131 /* ctm_receiver() */ |
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132 /* ************** */ |
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133 /* Runs the Cellular Text Telephone Modem Receiver for a block of */ |
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134 /* (nominally) 160 samples. Due to the internal synchronization, the */ |
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135 /* number of processed samples might vary between 156 and 164 samples. */ |
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136 /* The input of the samples and the output of the decoded characters */ |
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137 /* is handled via fifo buffers, which have to be initialized */ |
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138 /* externally before using this function (see fifo.h for details). */ |
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139 /* */ |
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140 /* input/output variables: */ |
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141 /* *ptr_signal_fifo_state fifo state for the input samples */ |
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142 /* *ptr_output_char_fifo_state fifo state for the output characters */ |
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143 /* *ptr_early_muting_required returns whether the original audio signal */ |
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144 /* must not be forwarded. This is to guarantee */ |
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145 /* that the preamble or resync sequence is */ |
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146 /* detected only by the first CTM device, if */ |
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147 /* several CTM devices are cascaded */ |
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148 /* subsequently. */ |
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149 /* *rx_state pointer to the variable containing the */ |
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150 /* receiver states */ |
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151 /***************************************************************************/ |
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152 |
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153 void ctm_receiver(fifo_state_t* ptr_signal_fifo_state, |
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154 fifo_state_t* ptr_output_char_fifo_state, |
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155 BOOL* ptr_early_muting_required, |
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156 rx_state_t* rx_state); |
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157 |
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158 #endif |