FreeCalypso > hg > tcs211-c139

annotate chipsetsw/layer1/gtt_include/ctm/ctm_transmitter.h @ 0:509db1a7b7b8

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initial import: leo2moko-r1
author Space Falcon <falcon@ivan.Harhan.ORG>
date Mon, 01 Jun 2015 03:24:05 +0000
parents
children
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Space Falcon <falcon@ivan.Harhan.ORG>
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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_transmitter.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_transmitter.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_transmitter()
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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_transmitter_h
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27 #define ctm_transmitter_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 "ctm_typedefs.h"
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36 #include "ctm_defines.h"
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37 #include "init_interleaver.h"
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38 #include "tonemod.h"
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39 #include "conv_poly.h"
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40 #include "fifo.h"
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41
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42 /* ******************************************************************/
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43 /* Type definitions for variables that contain all states of the */
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44 /* CTM Transmitter */
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45 /* ******************************************************************/
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46
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47 typedef struct {
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48 BOOL burstActive;
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49 WORD16 cntIdleSymbols;
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50 WORD16 cntEncBitsInCurrentBlock;
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51 WORD16 cntTXBitsInCurrentBlock;
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52
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53 /* vectors (not to be allocated) */
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54 WORD16 resync_sequence[RESYNC_SEQ_LENGTH];
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55
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56 #if (NUM_MUTE_ROWS>0)
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57 WORD16 mutePositions[intlvB*NUM_MUTE_ROWS];
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58 #else
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59 WORD16 mutePositions[1];
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60 #endif
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61
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62 fifo_state_t fifo_state;
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63 fifo_state_t octet_fifo_state;
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64 interleaver_state_t diag_int_state;
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65 conv_encoder_t conv_enc_state;
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66 } tx_state_t;
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67
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68
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69
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70 /***********************************************************************/
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71 /* init_ctm_transmitter() */
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72 /* ********************** */
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73 /* Initialization of the CTM Transmitter */
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74 /* */
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75 /* output vaiables: */
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76 /* tx_state : pointer to a variable of tx_state_t containing the */
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77 /* initialized states of the receiver */
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78 /***********************************************************************/
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79
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80 void init_ctm_transmitter(tx_state_t* tx_state);
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81 /*
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82 ***********************************************************************
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83 * Shutdown_ctm_transmitter() *
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84 * ********************** *
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85 * Shutdown of the Cellular Text Telephone Modem transmitter and *
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86 * deallocate memory used by the CTM Tx buffers. *
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87 * *
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88 * Input variables: *
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89 * tx_state : pointer to a variable of tx_state_t containing the *
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90 * initialized states of the transmitter. *
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91 ***********************************************************************
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92 */
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93 void Shutdown_ctm_transmitter(tx_state_t* tx_state);
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94
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95 /*
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96 ***********************************************************************
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97 * reset_ctm_transmitter() *
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98 * ********************** *
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99 * Reset of the Cellular Text Telephone Modem transmitter, state *
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100 * machines and buffer pointers. *
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101 * *
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102 * Input variables: *
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103 * tx_state : pointer to a variable of tx_state_t containing the *
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104 * initialized states of the transmitter. *
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105 ***********************************************************************
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106 */
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107 void reset_ctm_transmitter(tx_state_t* tx_state);
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108
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109
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110 /***********************************************************************/
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111 /* ctm_transmitter() */
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112 /* ***************** */
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113 /* Runs the Cellular Text Telephone Modem (CTM) Transmitter for a */
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114 /* block of 160 output samples, representing 8 gross bits. */
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115 /* The bits, which are modulated into tones, are taken from an */
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116 /* internal fifo buffer. If the fifo buffer is empty, zero-valued */
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117 /* samples are generated. The fifo buffer is filled with */
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118 /* channel-encoded and interlaeved bits, which are generated */
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119 /* internally by coding the actual input character. With each call of */
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120 /* this function one or less input characters can be coded. If there */
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121 /* is no character to for transmission, one of the following code has */
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122 /* be used: */
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123 /* - 0xFFFF: indicates that there is no character to transmit and */
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124 /* that the transmitter should stay in idle mode, if it is */
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125 /* currently already in idle mode. If the transmitter is */
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126 /* NOT in idle mode, it might generate <IDLE> symbols in */
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127 /* to keep an active burst running. The CTM burst is */
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128 /* terminated if five <IDLE> symbols have been generated */
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129 /* consecutevely. */
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130 /* */
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131 /* - 0xFFFE: although there is no character to transmit, a CTM burst */
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132 /* is initiated in order to signalize to the far-end side */
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133 /* that CTM is supported. The burst starts with the <IDLE> */
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134 /* symbol and will be contiued with <IDLE> symbols if there */
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135 /* are no regular characters handed over during the next */
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136 /* calls of this function. The CTM burst is terminated if */
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137 /* five <IDLE> symbols have been transmitted consecutevely. */
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138 /* */
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139 /* In order to avoid an overflow of the internal fifo buffer, the */
509db1a7b7b8 initial import: leo2moko-r1
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140 /* variable *ptrNumBitsStillToModulate should be checked before */
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141 /* calling this function. */
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Space Falcon <falcon@ivan.Harhan.ORG>
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142 /* */
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143 /* input variables: */
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144 /* ucsCode UCS code of the character */
509db1a7b7b8 initial import: leo2moko-r1
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145 /* or one of the codes 0xFFFF or 0xFFFE */
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146 /* sineOutput must be false in regular mode; if true, */
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147 /* a pure sine output signal is generated */
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148 /* output variables: */
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149 /* txToneVec output signal (vector of 160 samples) */
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150 /* input/output variables: */
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151 /* tx_state pointer to the variable containing the */
509db1a7b7b8 initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
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152 /* transmitter states */
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153 /***********************************************************************/
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154
509db1a7b7b8 initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
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155 void ctm_transmitter(UWORD16 ucsCode,
509db1a7b7b8 initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
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156 fifo_state_t* ctmCodeOutputVec,
509db1a7b7b8 initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
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157 tx_state_t* tx_state );
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158
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159 #endif