FreeCalypso > hg > fc-tourmaline
view src/gpf/ccd/noncritical_ext.c @ 275:79cfefc1e2b4
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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/* +------------------------------------------------------------------------------ | File: noncritical_ext.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: Encoding and decoding functions for nonCriticalExtensions elements | | $Identity:$ +------------------------------------------------------------------------------ */ /* * Standard definitions like 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 and constants in the common part of ccd */ #include "ccd.h" /* * Declaration of coder/decoder tables */ #include "ccdtable.h" #include "ccddata.h" #ifndef RUN_INT_RAM /* +------------------------------------------------------------------------+ | PROJECT : CCD (6144) MODULE : noncritical_ext | | STATE : code ROUTINE : cdc_noncritical_ext_decode | +------------------------------------------------------------------------+ PURPOSE : Decode elements of type nonCriticalExtensions An element of this type should never be encoded or decoded. If the coder faces an IE of this type, it should report a warning and continue decoding. Whenever a nonCriticalExtensions-IE is extended from NULL or SEQUENCE {} to another type, its CCD coding type will change and the functions in this file will not be called for that IE any more. According to 3GPP TS25.331 V3.6.0, 10.1.1.1: Information elements applicable to choices reserved for future releases of the protocol shall be added to the end of the message. In future releases non critical informaion elements ... shall be appended at the end of the message. See also 3GPP TS25.921 V4.3.0, 10.4. */ SHORT cdc_noncritical_ext_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) { #ifdef DEBUG_CCD #ifndef CCD_SYMBOLS TRACE_CCD (globs, "cdc_noncritical_ext_decode()"); #else TRACE_CCD (globs, "cdc_noncritical_ext_decode() %s", mcomp[melem[e_ref].elemRef].name); #endif #endif globs->pstructOffs = melem[e_ref].structOffs; /* For optional elements we have already set the valid flag in the * C-structure. We have done it while processing ASN1_SEQ. */ if ( ! cdc_isPresent(e_ref, globs) ) { return 1; } if (melem[e_ref].elemType EQ 'V' AND mvar[melem[e_ref].elemRef].bSize EQ 0) { return 0; } /* * Currently CCD tool chain does not support extensions of this type. * This else-implementation is just an outlook. * else { U16 compRef = melem[e_ref].elemRef; U16 elemRef = mcomp[compRef].componentRef; (void) codec[melem[Elem].codingType][DECODE_FUN] (compRef, elemRef, globs); }*/ return 1; } #endif /* !RUN_INT_RAM */ #ifndef RUN_INT_RAM /* +------------------------------------------------------------------------+ | PROJECT : CCD (6144) MODULE : noncritical_ext | | STATE : code ROUTINE : cdc_noncritical_ext_encode | +------------------------------------------------------------------------+ PURPOSE : Encode elements of type nonCriticalExtensions An element of this type should never be encoded or decoded. If the coder faces an IE of this type, it should report an error report and abort. */ SHORT cdc_noncritical_ext_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) { #ifdef DEBUG_CCD #ifndef CCD_SYMBOLS TRACE_CCD (globs, "cdc_noncritical_ext_encode()"); #else TRACE_CCD (globs, "cdc_noncritical_ext_encode() %s", mcomp[melem[e_ref].elemRef].name); #endif #endif globs->pstructOffs = melem[e_ref].structOffs; /* For optional elements we have already set the valid flag in the * C-structure. We have done it while processing ASN1_SEQ. */ if ( ! cdc_isPresent(e_ref, globs) ) { return 1; } if (melem[e_ref].elemType EQ 'V' AND mvar[melem[e_ref].elemRef].bSize EQ 0) { return 0; } /* * Currently CCD tool chain does not support extensions of this type. * This else-implementation is just an outlook. * else { U16 compRef = melem[e_ref].elemRef; U16 elemRef = mcomp[compRef].componentRef; (void) codec[melem[Elem].codingType][ENCODE_FUN] (compRef, elemRef, globs); }*/ return 1; } #endif /* !RUN_INT_RAM */
