FreeCalypso > hg > fc-tourmaline
view cdg-hybrid/sap/ph.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 : ph.pdf ;*** Creation : Wed Mar 11 09:58:34 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 : ph ;*** Document No. : 6147.112.01.100 ;*** Document Date : 2001-10-26 ;*** Document Status: APPROVED ;*** Document Author: SBK ;******************************************************************************** PRAGMA SRC_FILE_TIME "Thu Nov 29 09:50:28 2007" PRAGMA LAST_MODIFIED "2001-10-26" PRAGMA ID_AND_VERSION "6147.112.01.100" CONST DUMMY_PH 0 ; Dummy, not used, needed to satisfy tool chain which requires at least one constant definition in a SAP VALTAB VAL_ch_type VAL 0 CH_TYPE_SACCH "SACCH" VAL 1 CH_TYPE_SDCCH "SDCCH" VAL 2 CH_TYPE_FACCH "FACCH Full Rate" VAL 3 "reserved" VAL 4 "reserved" VAL 5 "reserved" VAL 6 "reserved" VAL 7 CH_TYPE_FACCH_HR "FACCH Half Rate" VAR l2_channel "Layer 2 channel-type" B VAL @p_mphc - VAL_l2_channel@ VAR l_buf "length of content in bit" S VAR o_buf "offset of content in bit" S VAR buf "buffer content; the actual size of buf is determined and allocated at run-time and not restricted to 1;" B VAR dummy "dummy not used" B COMP sdu "message unit" { l_buf ; length of content in bit o_buf ; offset of content in bit buf [1] ; buffer content; the actual size of buf is determined and allocated at run-time and not restricted to 1; } ; PH_READY_TO_SEND 0x4100 ; PH_DATA_REQ 0x0100 ; PH_TRACE_IND 0x4102 PRIM PH_READY_TO_SEND 0x4100 { l2_channel AS ch_type ; channel type } PRIM PH_DATA_REQ 0x0100 { l2_channel AS ch_type ; channel type dummy ; dummy not used; reserved sdu ; message unit } PRIM PH_TRACE_IND 0x4102 { dummy ; dummy not used; not used }