FreeCalypso > hg > fc-magnetite
view src/cs/layer1/gtt_include/ctm/ctm_receiver.h @ 339:2990f590d368
configs/l1reconst-chg created
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 14 Dec 2017 23:09:56 +0000 |
parents | 945cf7f506b2 |
children |
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/* ******************************************************************************* * * COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH * 90411 NUERNBERG, GERMANY, Tel Int + 49 911 5217 100 * * The program(s) may be used and/or copied only with the * written permission from Ericsson or in accordance * with the terms and conditions stipulated in the agreement or * contract under which the program(s) have been supplied. * ******************************************************************************* * * File : ctm_receiver.h * Author : EEDN/RV Matthias Doerbecker * Tested Platforms : Sun Solaris, Windows NT 4.0 * Description : header file for ctm_receiver.c * * Changes since October 13, 2000: * - added reset function reset_ctm_receiver() * * $Log: $ * ******************************************************************************* */ #ifndef ctm_receiver_h #define ctm_receiver_h "$Id: $" /* ******************************************************************************* * INCLUDE FILES ******************************************************************************* */ #include "init_interleaver.h" //#include "tonedemod.h" #include "wait_for_sync.h" #include "conv_poly.h" #include "viterbi.h" #include "ctm_typedefs.h" #include "fifo.h" #include <stdlib.h> #include <stdio.h> /* ******************************************************************/ /* Type definitions for variables that contain all states of the */ /* Cellular Text Telephone Modem (CTM) Transmitter and Receiver, */ /* respectively. */ /* ******************************************************************/ typedef struct { /* simple variables */ WORD16 samplingCorrection; WORD16 numBitsWithLowReliability; WORD16 cntIdleSymbols; WORD16 numDeintlBits; WORD16 cntRXBits; WORD16 syncCorrect; WORD16 cntUnreliableGrossBits; WORD16 intl_delay; /* structs (state types) */ fifo_state_t rx_bits_fifo_state; fifo_state_t octet_fifo_state; fifo_state_t net_bits_fifo_state; //demod_state_t tonedemod_state; // interleaver_state_t intl_state; interleaver_state_t deintl_state; wait_for_sync_state_t wait_state; viterbi_t viterbi_state; /* vectors (not to be allocated) */ #if (NUM_MUTE_ROWS>0) WORD16 mutePositions[intlvB*NUM_MUTE_ROWS]; #else WORD16 mutePositions[1]; #endif /* vectors (to be allocated in init_ctm_receiver()) */ WORD16 *waitSyncOut; WORD16 *deintlOut; } rx_state_t; /***********************************************************************/ /* init_ctm_receiver() */ /* ******************* */ /* Initialization of the CTM Receiver. */ /* */ /* output vaiables: */ /* rx_state : pointer to a variable of rx_state_t containing the */ /* initialized states of the receiver */ /***********************************************************************/ void init_ctm_receiver(rx_state_t* rx_state); /* *********************************************************************** * Shutdown_ctm_receiver() * * *********************** * * Shutdown of the CTM Receiver. * * * * Input variables: * * rx_state : pointer to a variable of rx_state_t containing the * * initialized states of the receiver * *********************************************************************** */ void Shutdown_ctm_receiver(rx_state_t* rx_state); /* *********************************************************************** * reset_ctm_receiver() * * ******************** * * Reset of the Cellular Text Telephone Modem receiver, state * * machines and buffer pointers. * * * * Input variables: * * rx_state : pointer to a variable of rx_state_t containing the * * initialized states of the receiver * *********************************************************************** */ void reset_ctm_receiver(rx_state_t* rx_state); /***************************************************************************/ /* ctm_receiver() */ /* ************** */ /* Runs the Cellular Text Telephone Modem Receiver for a block of */ /* (nominally) 160 samples. Due to the internal synchronization, the */ /* number of processed samples might vary between 156 and 164 samples. */ /* The input of the samples and the output of the decoded characters */ /* is handled via fifo buffers, which have to be initialized */ /* externally before using this function (see fifo.h for details). */ /* */ /* input/output variables: */ /* *ptr_signal_fifo_state fifo state for the input samples */ /* *ptr_output_char_fifo_state fifo state for the output characters */ /* *ptr_early_muting_required returns whether the original audio signal */ /* must not be forwarded. This is to guarantee */ /* that the preamble or resync sequence is */ /* detected only by the first CTM device, if */ /* several CTM devices are cascaded */ /* subsequently. */ /* *rx_state pointer to the variable containing the */ /* receiver states */ /***************************************************************************/ void ctm_receiver(fifo_state_t* ptr_signal_fifo_state, fifo_state_t* ptr_output_char_fifo_state, BOOL* ptr_early_muting_required, rx_state_t* rx_state); #endif