FreeCalypso > hg > fc-tourmaline
view cdg-hybrid/sap/gsim.pdf @ 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 | 35f7a1dc9f7d |
children |
line wrap: on
line source
;******************************************************************************** ;*** File : gsim.pdf ;*** Creation : Wed Mar 11 09:58:11 CST 2009 ;*** XSLT Processor : Apache Software Foundation / http://xml.apache.org/xalan-j / supports XSLT-Ver: 1 ;*** Copyright : (c) Texas Instruments AG, Berlin Germany 2002 ;******************************************************************************** ;*** Document Type : Service Access Point Specification ;*** Document Name : gsim ;*** Document No. : 8441.113.99.004 ;*** Document Date : 2003-02-04 ;*** Document Status: BEING_PROCESSED ;*** Document Author: LG ;******************************************************************************** PRAGMA SRC_FILE_TIME "Thu Nov 29 09:43:12 2007" PRAGMA LAST_MODIFIED "2003-02-04" PRAGMA ID_AND_VERSION "8441.113.99.004" CONST GSIM_PTMSI_NA 0xFFFFFFFF ; P-TMSI not applicable (i.e. this parameter shall be ignored) CONST SIZE_SRES 4 ; size of sres CONST SIZE_KC 8 ; size of kc CONST SIZE_RAND 16 ; size of rand CONST MAX_IMSI 9 ; Number of bytes to be read from EF(IMSI) VALTAB VAL_gu VAL 0 GSIM_GU_NA "GPRS update status not applicable (i.e. this parameter shall be ignored)" VAL 1 GSIM_GU1_UPDATED "last GPRS attach or RAU attempt successful" VAL 2 GSIM_GU2_NOT_UPDATED "last GPRS attach or RAU attempt failed procedurally" VAL 3 GSIM_GU3_ROAMING_NOT_ALLOWED "last GPRS attach or RAU attempt correctly performed, but negative answer from network received" VALTAB VAL_tmsi VAL 0xFFFFFFFF GSIM_TMSI_INVALID "P-TMSI invalid (see GSM 3.03)" VALTAB VAL_ptmsi_signature_flag VAL 0 GSIM_PTMSI_SIG_DEL "P-TMSI Dignature shall be deleted" VAL 1 GSIM_PTMSI_SIG_VALID "P-TMSI Signature is valid" VAL 2 GSIM_PTMSI_SIG_NA "P-TMSI Signature not applicable (i.e. this parameter shall be ignored)" VALTAB VAL_gsim_cksn VAL 0 GSIM_CKSN_NA "GPRS ciphering key sequence number not applicable (i.e. this parameter shall be ignored)" VALTAB VAL_sim_gprs_invalid VAL 0 GSIM_SIM_GPRS_NA "not applicable (i.e. this parameter shall be ignored)" VAL 1 GSIM_SIM_GPRS_VALID "SIM is considered as valid for GPRS" VAL 2 GSIM_SIM_GPRS_INVALID "SIM is considered as invalid for GPRS" VAR gu "GPRS update status" B VAL @p_gsim - VAL_gu@ VAR rai "routing_area information" B VAR tmsi "temporary mobile subscriber identity" L VAL @p_gsim - VAL_tmsi@ VAR ptmsi "packet temporary mobile subscriber identity" L VAL @p_gsim - VAL_tmsi@ VAR c_field "length of imsi" B VAR field "imsi" B VAR ptmsi_signature_flag "P-TMSI Signature flag" B VAL @p_gsim - VAL_ptmsi_signature_flag@ VAR gsim_kc "GPRS ciphering key" B VAR gsim_cksn "GPRS ciphering key sequence number" B VAL @p_gsim - VAL_gsim_cksn@ VAR sres "authentication parameter Sres" B VAR rand "authentication parameter rand" B VAR sim_gprs_invalid "SIM invalid for GPRS service" B VAL @p_gsim - VAL_sim_gprs_invalid@ VAR acc_contr_class "Access Control Class" S COMP imsi_field "international mobile subscriber identity" { c_field ; length of imsi field [MAX_IMSI] ; imsi } ; GSIM_UPDATE_REQ 0x2900 ; GSIM_STORE_KC_REQ 0x2901 ; GSIM_INSERTED_IND 0x6900 ; GSIM_REMOVED_IND 0x6901 ; GSIM_AUTHENTICATION_REQ 0x2902 ; GSIM_AUTHENTICATION_CNF 0x6902 PRIM GSIM_UPDATE_REQ 0x2900 { sim_gprs_invalid ; SIM invalid for GPRS service gu ; GPRS update status ptmsi ; packet temporary mobile subscriber identity ptmsi_signature_flag ; P-TMSI Signature flag rai [7] ; routing area identification } PRIM GSIM_STORE_KC_REQ 0x2901 { gsim_kc [8] ; GPRS ciphering key gsim_cksn ; GPRS ciphering key sequence number } PRIM GSIM_INSERTED_IND 0x6900 { sim_gprs_invalid ; SIM invalid for GPRS service gu ; GPRS update status rai [7] ; routing area identification ptmsi ; packet temporary mobile subscriber identity tmsi ; temporary mobile subscriber identity imsi_field ; international mobile subscriber identity gsim_kc [8] ; GPRS ciphering key gsim_cksn ; GPRS ciphering key sequence number acc_contr_class ; Access control class } PRIM GSIM_REMOVED_IND 0x6901 { } PRIM GSIM_AUTHENTICATION_REQ 0x2902 { rand [SIZE_RAND] ; rand gsim_cksn ; ciphering key sequence number } PRIM GSIM_AUTHENTICATION_CNF 0x6902 { sres [SIZE_SRES] ; Sres gsim_kc [SIZE_KC] ; Kc }