FreeCalypso > hg > fc-tourmaline
view src/nucleus/tmi.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 |
line wrap: on
line source
/*************************************************************************/ /* */ /* 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 */ /* */ /* tmi.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* TM - Timer Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains the initialization routine for the timer */ /* management component. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* TMI_Initialize Timer Management Initialize */ /* */ /* DEPENDENCIES */ /* */ /* tc_extr.h Task function interfaces */ /* er_extr.h Error handling function */ /* tm_defs.h Timer component constants */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 08-09-1993 Removed timer task creation, */ /* cleared the ID of the HISR */ /* control block, and casted the */ /* HISR priority, resulting in */ /* version 1.0a */ /* 08-09-1993 Verified version 1.0a */ /* 03-01-1994 Changed names of HISR create */ /* function, removed reference to */ /* timer list protect since it */ /* was deleted, 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 "tc_extr.h" /* Task control functions */ #include "er_extr.h" /* Error handling function */ #include "tm_defs.h" /* Timer constants */ #include "tm_extr.h" /* Timer interfaces */ /* Define external inner-component global data references. */ extern CS_NODE *TMD_Created_Timers_List; extern UNSIGNED TMD_Total_Timers; extern TM_TCB *TMD_Active_Timers_List; extern INT TMD_Active_List_Busy; extern TC_PROTECT TMD_Created_List_Protect; extern UNSIGNED TMD_System_Clock; extern UNSIGNED TMD_Timer; extern INT TMD_Timer_State; extern UNSIGNED TMD_Time_Slice; extern TC_TCB *TMD_Time_Slice_Task; extern INT TMD_Time_Slice_State; extern TC_HCB TMD_HISR; extern VOID *TMD_HISR_Stack_Ptr; extern UNSIGNED TMD_HISR_Stack_Size; extern INT TMD_HISR_Priority; /* Define inner-component function prototypes. */ VOID TMC_Timer_HISR(VOID); /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TMI_Initialize */ /* */ /* DESCRIPTION */ /* */ /* This function initializes the data structures that control the */ /* operation of the timer component (TM). There are no application */ /* timers created initially. This routine must be called from */ /* Supervisor mode in Supervisor/User mode switching kernels. */ /* */ /* CALLED BY */ /* */ /* INC_Initialize System initialization */ /* */ /* CALLS */ /* */ /* ERC_System_Error System error handing function*/ /* TCC_Create_HISR Create timer HISR */ /* TCCE_Create_HISR Create timer HISR (error chk)*/ /* */ /* INPUTS */ /* */ /* (Indirect) */ /* TMD_HISR_Stack_Ptr Pointer to HISR stack area */ /* TMD_HISR_Stack_Size Size of HISR stack */ /* TMD_HISR_Priority Priority of timer HISR */ /* */ /* OUTPUTS */ /* */ /* TMD_Created_Timers_List Pointer to the linked-list */ /* of created application */ /* timers */ /* TMD_Total_Timers Total number of created */ /* application timers */ /* TMD_Active_Timers_List Pointer to the linked-list */ /* of active timers. */ /* TMD_Active_List_Busy Flag indicating that the */ /* active timer list is in use*/ /* TMD_Created_List_Protect Created timer list protect */ /* structure */ /* TMD_System_Clock System clock */ /* TMD_Timer Timer count-down value */ /* TMD_Timer_State State of timer */ /* TMD_Time_Slice Time slice count-down value */ /* TMD_Time_Slice_Task Pointer to task to time-slice*/ /* TMD_Time_Slice_State State of time slice */ /* TMD_HISR Timer HISR control block */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 08-09-1993 Removed timer task creation, */ /* cleared the ID of the HISR */ /* control block, and casted the */ /* HISR priority, resulting in */ /* version 1.0a */ /* 08-09-1993 Verified version 1.0a */ /* 03-01-1994 Modified HISR create function */ /* interface, removed reference */ /* to timer list protect since it */ /* was deleted, resulting in */ /* version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ VOID TMI_Initialize(VOID) { STATUS status; /* Return status of creates */ /* Initialize the created application timer's list to NU_NULL. */ TMD_Created_Timers_List = NU_NULL; /* Initialize the total number of created application timers to 0. */ TMD_Total_Timers = 0; /* Initialize the active timer's list to NU_NULL. */ TMD_Active_Timers_List = NU_NULL; /* Clear the active timer list busy flag. */ TMD_Active_List_Busy = NU_FALSE; /* Initialize the system clock to 0. */ TMD_System_Clock = 0; /* Initialize the timer to 0 and the timer state to "not active." */ TMD_Timer = 0; TMD_Timer_State = TM_NOT_ACTIVE; /* Initialize the time-slice timer, task pointer, and the associated state variable. */ TMD_Time_Slice = 0; TMD_Time_Slice_Task = NU_NULL; TMD_Time_Slice_State = TM_NOT_ACTIVE; /* Initialize the list protection structures. */ TMD_Created_List_Protect.tc_tcb_pointer = NU_NULL; /* Clear out the timer HISR control block. */ TMD_HISR.tc_id = 0; /* Create the timer HISR. The timer HISR is responsible for performing the time slice function and activating the timer task if necessary. */ #ifdef NU_NO_ERROR_CHECKING status = TCC_Create_HISR((NU_HISR *) &TMD_HISR, "SYSTEM H", TMC_Timer_HISR, (OPTION) TMD_HISR_Priority, TMD_HISR_Stack_Ptr, TMD_HISR_Stack_Size); #else status = TCCE_Create_HISR((NU_HISR *) &TMD_HISR, "SYSTEM H", TMC_Timer_HISR, (OPTION) TMD_HISR_Priority, TMD_HISR_Stack_Ptr, TMD_HISR_Stack_Size); #endif /* Check for a system error creating the timer HISR. */ if (status != NU_SUCCESS) /* Call the system error handler. */ ERC_System_Error(NU_ERROR_CREATING_TIMER_HISR); }