FreeCalypso > hg > fc-tourmaline
view src/nucleus/hid.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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/*************************************************************************/ /* */ /* Copyright Mentor Graphics Corporation 2002 */ /* All Rights Reserved. */ /* */ /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ /* SUBJECT TO LICENSE TERMS. */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* FILE NAME VERSION */ /* */ /* hid.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* HI - History Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains global data structures for use within the */ /* History Management component. */ /* */ /* DATA STRUCTURES */ /* */ /* HID_History_Enable History saving enabled flag */ /* HID_Write_Index Current write index into */ /* history table */ /* HID_Read_Index Current read index into */ /* history table */ /* HID_Entry_Count Number of entries in the */ /* table counter */ /* HID_History_Protect History protection */ /* */ /* FUNCTIONS */ /* */ /* None */ /* */ /* DEPENDENCIES */ /* */ /* hi_defs.h History Management constants */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Updated copyright notice, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 04-17-1996 updated to version 1.2 */ /* 03-24-1998 Released version 1.3 */ /* 03-26-1999 Released 1.11m (new release */ /* numbering scheme) */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #define NU_SOURCE_FILE #include "hi_defs.h" /* History constants */ /* HID_History_Enable is a flag that indicates whether or not history saving is enabled. If this value is NU_FALSE, history saving is disabled. Otherwise, history saving is enabled. */ INT HID_History_Enable; /* HID_Write_Index is the index of the next available entry in the history table. */ INT HID_Write_Index; /* HID_Read_Index is the index of the oldest entry in the history table. */ INT HID_Read_Index; /* HID_Entry_Count keeps track of the number of entries currently in the history table. */ INT HID_Entry_Count; /* HID_History_Protect is a protection structure used to block any other thread from access to the history data structures. */ TC_PROTECT HID_History_Protect;