FreeCalypso > hg > freecalypso-sw
view gsm-fw/ccd/gsm1_v.c @ 714:58bbee73c4b7
gsm-fw/L1/include/l1_confg.h: SEND_FN_TO_L2_IN_DCCH fix
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Fri, 03 Oct 2014 06:49:23 +0000 |
parents | 970d6199f2c5 |
children |
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/* +----------------------------------------------------------------------------- | 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 */