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view src/gpf/ccd/csn1_sh_opt.c @ 275:79cfefc1e2b4

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audio mode load: gracefully handle mode files of wrong AEC version Unfortunately our change of enabling L1_NEW_AEC (which is necessary in order to bring our Calypso ARM fw into match with the underlying DSP reality) brings along a change in the audio mode file binary format and file size - all those new tunable AEC parameters do need to be stored somewhere, after all. But we already have existing mode files in the old format, and setting AEC config to garbage when loading old audio modes (which is what would happen without the present change) is not an appealing proposition. The solution implemented in the present change is as follows: the audio mode loading code checks the file size, and if it differs from the active version of T_AUDIO_MODE, the T_AUDIO_AEC_CFG structure is cleared - set to the default (disabled AEC) for the compiled type of AEC. We got lucky in that this varying T_AUDIO_AEC_CFG structure sits at the end of T_AUDIO_MODE!
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 30 Jul 2021 02:55:48 +0000
parents 4e78acac3d88
children
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/* 
+----------------------------------------------------------------------------- 
|  Project :  
|  Modul   : csn1_sh_opt.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 CSN1_SH_OPT
|             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"


extern SHORT cdc_csn1_sx_decode (int flag, const ULONG e_ref, T_CCD_Globs *globs);
extern SHORT cdc_csn1_sx_encode (int flag, const ULONG e_ref, T_CCD_Globs *globs);

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------+
| PROJECT : CCD (6144)               MODULE  : CDC_GSM                   |
| STATE   : code                     ROUTINE : cdc_csn1_shl_opt_decode   |
+------------------------------------------------------------------------+

  PURPOSE : Decoding of the GSM Type CSN1 SHL OPT element. 
            This coding type enhances the GSM Type CSN1 SHL. It supports 
            previous behaviour of CSN1_SHL and the lack of the whole 
            element.
            The coding type CSN1_SHL_OPT is suitable for elements which 
            structures match to the following common definition:
            { null | L | H { 0 | 1 < value part > }
            
            The element value can be present, then it is preceded by the 
            flag value H. If the element is represented by the flag L only 
            the value is absent! Besides the absence of the whole element 
            is allowed.
*/

SHORT cdc_csn1_shl_opt_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
{

#ifdef DEBUG_CCD
  #ifndef CCD_SYMBOLS
  TRACE_CCD (globs, "cdc_csn1_shl_opt_decode()");
	#else
	TRACE_CCD (globs, "cdc_csn1_shl_opt_decode() %s", ccddata_get_alias((USHORT) e_ref, 1));  
	#endif
#endif

  return cdc_csn1_sx_decode (0xFF, e_ref, globs);
}
#endif /* !RUN_FLASH */

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------+
| PROJECT : CCD (6144)              MODULE  : CDC_GSM                    |
| STATE   : code                    ROUTINE : cdc_csn1_shl_opt_encode    |
+------------------------------------------------------------------------+

  PURPOSE : Encoding of the GSM Type CSN1 SHL OPT element doesn't differ
            from encoding of the GSM Type CSN1 SHL. 
            This element consists of a 1 bit valid flag and a value part. 
            If the element is valid (the v_xxx components is TRUE in the
            decoded message) a H bit will be coded followed by the
            coding of the value part. Otherwise a L bit will be
            coded.

*/

SHORT cdc_csn1_shl_opt_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
{
#ifdef DEBUG_CCD
  #ifndef CCD_SYMBOLS
  TRACE_CCD (globs, "cdc_csn1_shl_opt_encode()");
	#else
	TRACE_CCD (globs, "cdc_csn1_shl_opt_encode() %s", ccddata_get_alias((USHORT) e_ref, 1));  
	#endif
#endif

  return cdc_csn1_sx_encode (0xFF, e_ref, globs);
}
#endif /* !RUN_FLASH */