+
−/* 
+
−+----------------------------------------------------------------------------- 
+
−|  Project :  
+
−|  Modul   : gsm1_v.c
+
−+----------------------------------------------------------------------------- 
+
−|  Copyright 2002 Texas Instruments Berlin, AG 
+
−|                 All rights reserved. 
+
−| 
+
−|                 This file is confidential and a trade secret of Texas 
+
−|                 Instruments Berlin, AG 
+
−|                 The receipt of or possession of this file does not convey 
+
−|                 any rights to reproduce or disclose its contents or to 
+
−|                 manufacture, use, or sell anything it may describe, in 
+
−|                 whole, or in part, without the specific written consent of 
+
−|                 Texas Instruments Berlin, AG. 
+
−+----------------------------------------------------------------------------- 
+
−|  Purpose :  Definition of encoding and decoding functions for GSM1_V elements 
+
−+----------------------------------------------------------------------------- 
+
−*/ 
+
−
+
−
+
−/*
+
− * standard definitions like GLOBAL, UCHAR, ERROR etc.
+
− */
+
−#include "typedefs.h"
+
−#include "header.h"
+
−
+
−/*
+
− * Prototypes of ccd (USE_DRIVER EQ undef) for prototypes only
+
− * look at ccdapi.h
+
− */
+
−#undef USE_DRIVER
+
−#include "ccdapi.h"
+
−
+
−/*
+
− * Types and functions for bit access and manipulation
+
− */
+
−#include "ccd_globs.h"
+
−#include "bitfun.h"
+
−
+
−/*
+
− * Prototypes of ccd internal functions
+
− */
+
−#include "ccd.h"
+
−
+
−
+
−/*
+
− * Declaration of coder/decoder tables
+
− */
+
−#include "ccdtable.h"
+
−#include "ccddata.h"
+
−
+
−#ifndef RUN_FLASH
+
−/*
+
−+--------------------------------------------------------------------+
+
−| PROJECT : CCD (6144)                 MODULE  : CDC_GSM             |
+
−| STATE   : code                       ROUTINE : cdc_gsm1v_decode    |
+
−+--------------------------------------------------------------------+
+
−
+
−  PURPOSE : Decoding of the GSM Type 1V element. This element
+
−            consists of a V component with max. 4 Bit length.
+
−*/
+
−
+
−SHORT cdc_gsm1v_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
+
−{
+
−  SHORT ret; 
+
−  ULONG  cix_ref, num_prolog_steps, prolog_step_ref;
+
−
+
−#ifdef DEBUG_CCD
+
−  #ifndef CCD_SYMBOLS
+
−  TRACE_CCD (globs, "cdc_gsm1v_decode()");
+
−  #else
+
−  TRACE_CCD (globs, "cdc_gsm1v_decode() %s", ccddata_get_alias((USHORT) e_ref, 1));
+
−  #endif
+
−#endif
+
−
+
−  cix_ref = melem[e_ref].calcIdxRef;
+
−  num_prolog_steps = calcidx[cix_ref].numPrologSteps;
+
−  prolog_step_ref  = calcidx[cix_ref].prologStepRef;
+
−
+
−  /*
+
−   * if this element have a defined Prolog
+
−   * we have to process it before decoding the bitstream
+
−   */
+
−  if (num_prolog_steps)
+
−  {
+
−    ccd_performOperations (num_prolog_steps, prolog_step_ref, globs);
+
−  }
+
−  
+
−  if (!globs->Swap1V_inProgress)
+
−  {
+
−    /*
+
−     * check if the next element is a GSM1V too
+
−     */
+
−    if ((ULONG)(mcomp[c_ref].componentRef
+
−        +mcomp[c_ref].numOfComponents) > e_ref
+
−      AND (melem[e_ref].codingType EQ melem[e_ref+1].codingType
+
−           OR melem[e_ref+1].elemType EQ 'S'))
+
−    { 
+
−	    if (melem[e_ref+1].elemType EQ 'S') 
+
−	    {
+
−		    /*
+
−		     * if the next element is a spare then skip the next 4 bits
+
−		     * do not decode the spare bits.
+
−		     */
+
−	      bf_setBitpos ((globs->bitpos+4), globs);
+
−
+
−          ret = cdc_std_decode (c_ref, e_ref, globs);
+
−
+
−          if (ret EQ 1)
+
−            ret++;
+
−
+
−          return ret;
+
−	    }
+
−	    else
+
−	    {
+
−		    /*
+
−		     * another 1V-element follow. We have to swap the nibbles.
+
−		     */
+
−		    globs->Swap1V_inProgress = TRUE;
+
−		    /*
+
−		     * store the akt position
+
−		     */
+
−		    globs->akt1VPos  = (USHORT)(globs->bitpos+4);
+
−		    globs->next1VPos = globs->bitpos;
+
−
+
−		    bf_setBitpos (globs->akt1VPos, globs);
+
−        ret = cdc_std_decode (c_ref, e_ref, globs);
+
−        /*
+
−         * increment the globs->maxBitpos by 1 so the bf_endOfBitstream
+
−         * will return FALSE
+
−         */
+
−        globs->maxBitpos++;
+
−
+
−        return ret;
+
−      }
+
−    }
+
−    ret = cdc_std_decode (c_ref, e_ref, globs);
+
−
+
−  }
+
−  else
+
−  {
+
−    globs->akt1VPos = globs->next1VPos;
+
−    globs->next1VPos = globs->bitpos;
+
−
+
−    bf_setBitpos (globs->akt1VPos, globs);
+
−    
+
−    /*
+
−     * decrement the globs->maxBitpos by 1 so the bf_endOfBitstream
+
−     * will return TRUE if the bitstream ended
+
−     */
+
−    globs->maxBitpos--;
+
−
+
−    ret = cdc_std_decode (c_ref, e_ref, globs);
+
−
+
−    bf_setBitpos (globs->next1VPos, globs);
+
−
+
−    globs->Swap1V_inProgress = FALSE;
+
−
+
−  }
+
−  return ret;
+
−}
+
−#endif /* !RUN_FLASH */
+
− 
+
−#ifndef RUN_FLASH
+
−/*
+
−+--------------------------------------------------------------------+
+
−| PROJECT : CCD (6144)                 MODULE  : CDC_GSM             |
+
−| STATE   : code                       ROUTINE : cdc_gsm1v_encode    |
+
−+--------------------------------------------------------------------+
+
−
+
−  PURPOSE : encoding of the GSM Type 1V element. This element
+
−            consists of a V component with max. 4 Bit length.
+
−*/
+
−
+
−SHORT cdc_gsm1v_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
+
−{
+
−#ifdef DEBUG_CCD
+
−  #ifndef CCD_SYMBOLS
+
−  TRACE_CCD (globs, "cdc_gsm1v_encode()");
+
−  #else
+
−  TRACE_CCD (globs, "cdc_gsm1v_encode() %s", ccddata_get_alias((USHORT) e_ref, 1));
+
−  #endif
+
−#endif
+
−
+
−  if (!globs->Swap1V_inProgress)
+
−  {
+
−    /*
+
−     * check if the next element is a GSM1V too
+
−     */
+
−    if ((ULONG)(mcomp[c_ref].componentRef
+
−        +mcomp[c_ref].numOfComponents) > e_ref
+
−      AND (melem[e_ref].codingType EQ melem[e_ref+1].codingType
+
−           OR melem[e_ref+1].elemType EQ 'S'))
+
−    { 
+
−	    if (melem[e_ref+1].elemType EQ 'S') 
+
−	    {
+
−        SHORT ret; 
+
−		    /*
+
−		     * if the next element is a spare then skip the next 4 bits
+
−		     * do not code the spare bits because the bitstream is cleared.
+
−		     */
+
−	      bf_setBitpos (globs->bitpos+4, globs);
+
−
+
−        ret = cdc_std_encode (c_ref, e_ref, globs);
+
−
+
−        if (ret EQ 1)
+
−          ret++;
+
−
+
−        return ret;
+
−	    }
+
−	    else
+
−      {
+
−        /*
+
−         * another 1V-element follow. We have to swap the nibbles.
+
−         */
+
−        globs->Swap1V_inProgress = TRUE;
+
−        /*
+
−         * store the akt position
+
−         */
+
−        globs->akt1VPos  = (USHORT)(globs->bitpos+4);
+
−        globs->next1VPos = globs->bitpos;
+
−
+
−        bf_setBitpos (globs->akt1VPos, globs);
+
−      }
+
−    }
+
−    return cdc_std_encode (c_ref, e_ref, globs);
+
−  }
+
−  else
+
−  {
+
−    SHORT ret;
+
−
+
−    globs->akt1VPos = globs->next1VPos;
+
−    globs->next1VPos = globs->bitpos;
+
−
+
−    bf_setBitpos (globs->akt1VPos, globs);
+
−    
+
−    ret = cdc_std_encode (c_ref, e_ref, globs);
+
−
+
−    bf_setBitpos (globs->next1VPos, globs);
+
−
+
−    globs->Swap1V_inProgress = FALSE;
+
−
+
−    return ret;
+
−  }
+
−}
+
−#endif /* !RUN_FLASH */