825 lines
39 KiB
C
825 lines
39 KiB
C
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/***********************************************************************
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* *
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* Filename: fsm.c *
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* Module: H245 Finite State Machine Subsystem *
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* *
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***********************************************************************
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* INTEL Corporation Proprietary Information *
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* *
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* This listing is supplied under the terms of a license agreement *
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* with INTEL Corporation and may not be copied nor disclosed except *
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* in accordance with the terms of that agreement. *
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* *
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* Copyright (c) 1996 Intel Corporation. All rights reserved. *
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***********************************************************************
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* *
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* $Workfile: FSM.C $
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* $Revision: 1.5 $
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* $Modtime: 09 Dec 1996 13:34:24 $
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* $Log: S:/STURGEON/SRC/H245/SRC/VCS/FSM.C_v $
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*
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* Rev 1.5 09 Dec 1996 13:34:28 EHOWARDX
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* Updated copyright notice.
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*
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* Rev 1.4 02 Jul 1996 00:09:24 EHOWARDX
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*
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* Added trace of state after state machine function called.
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*
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* Rev 1.3 30 May 1996 23:39:04 EHOWARDX
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* Cleanup.
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*
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* Rev 1.2 29 May 1996 15:20:12 EHOWARDX
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* Change to use HRESULT.
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*
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* Rev 1.1 28 May 1996 14:25:48 EHOWARDX
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* Tel Aviv update.
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*
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* Rev 1.0 09 May 1996 21:06:12 EHOWARDX
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* Initial revision.
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*
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* Rev 1.16.1.4 09 May 1996 19:48:34 EHOWARDX
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* Change TimerExpiryF function arguements.
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*
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* Rev 1.16.1.3 25 Apr 1996 17:00:18 EHOWARDX
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* Minor fixes.
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*
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* Rev 1.16.1.2 15 Apr 1996 10:45:38 EHOWARDX
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* Update.
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*
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* Rev 1.16.1.1 10 Apr 1996 21:16:06 EHOWARDX
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* Check-in for safety in middle of re-design.
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*
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* Rev 1.16.1.0 05 Apr 1996 12:21:16 EHOWARDX
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* Branched.
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* *
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***********************************************************************/
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#include "precomp.h"
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#include "h245api.h"
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#include "h245com.h"
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#include "h245fsm.h"
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#include "openu.h"
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#include "openb.h"
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#include "rqstcls.h"
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#include "termcap.h"
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#include "muxentry.h"
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#include "rmese.h"
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#include "mrse.h"
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#include "mlse.h"
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#include "mstrslv.h"
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#include "rtdse.h"
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#if defined(_DEBUG)
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// Signalling Entity definitions
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char * EntityName[NUM_ENTITYS] =
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{
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// Per-channel Signalling Entities
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"LCSE_OUT", // 0 Uni-directional Logical Channel signalling Signalling Entity - Outbound
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"LCSE_IN", // 1 Uni-directional Logical Channel signalling Signalling Entity - Inbound
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"BLCSE_OUT", // 2 Bi-directional Logical Channel signalling Signalling Entity - Outbound
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"BLCSE_IN", // 3 Bi-directional Logical Channel signalling Signalling Entity - Inbound
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"CLCSE_OUT", // 4 Close Logical Channel signalling Signalling Entity - Outbound
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"CLCSE_IN", // 5 Close Logical Channel signalling Signalling Entity - Inbound
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// Per H.245 Instance Signalling Entities
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"CESE_OUT", // 6 Capability Exchange Signalling Entity - Out-going
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"CESE_IN", // 7 Capability Exchange Signalling Entity - In-coming
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"MTSE_OUT", // 8 Multiplex Table Signalling Entity - Out-going
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"MTSE_IN", // 9 Multiplex Table Signalling Entity - In-coming
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"RMESE_OUT", // 10 Request Multiplex Entry Signalling Entity - Out-going
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"RMESE_IN", // 11 Request Multiplex Entry Signalling Entity - In-coming
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"MRSE_OUT", // 12 Mode Request Signalling Entity - Out-going
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"MRSE_IN", // 13 Mode Request Signalling Entity - In-coming
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"MLSE_OUT", // 14 Maintenance Loop Signalling Entity - Out-going
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"MLSE_IN", // 15 Maintenance Loop Signalling Entity - In-coming
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"MSDSE", // 16 Master Slave Determination Signalling Entity
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"RTDSE", // 17 Round Trip Delay Signalling Entity
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"STATELESS", // 18 No state machine associated with PDU
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};
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// Event definitions
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char * EventName[NUM_EVENTS] =
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{
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// Out-going Uni-directional Logical Channel (LCSE_OUT) events
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"ReqUEstablish", // 0
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"OpenUChAckPDU", // 1
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"OpenUChRejectPDU", // 2
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"CloseUChAckPDU", // 3
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"ReqURelease", // 4
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"T103Expiry", // 5
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// In-coming Uni-directional Logical Channel (LCSE_IN) events
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"OpenUChPDU", // 6
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"CloseUChPDU", // 7
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"ResponseUEstablish", // 8
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"EstablishUReject", // 9
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// Out-going Bi-directional Logical Channel (BLCSE_OUT) events
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"ReqBEstablish", // 10
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"OpenBChAckPDU", // 11
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"OpenBChRejectPDU", // 12
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"CloseBChAckPDU", // 13
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"ReqClsBLCSE", // 14
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"RspConfirmBLCSE", // 15
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"T103OutExpiry", // 16
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// In-coming Bi-directional Logical Channel (BLCSE_IN) events
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"OpenBChPDU", // 17
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"CloseBChPDU", // 18
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"ResponseBEstablish", // 19
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"OpenBChConfirmPDU", // 20
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"OpenRejectBLCSE", // 21
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"T103InExpiry", // 22
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// Out-going Request Close Logical Channel (CLCSE_OUT) events
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"ReqClose", // 23
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"ReqChCloseAckPDU", // 24
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"ReqChCloseRejectPDU", // 25
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"T108Expiry", // 26
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// In-coming Request Close Logical Channel (CLCSE_IN) events
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"ReqChClosePDU", // 27
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"ReqChCloseReleasePDU", // 28
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"CLCSE_CLOSE_response", // 29
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"CLCSE_REJECT_request", // 30
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// Out-going Terminal Capablity Exchange (CESE_OUT) events
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"TransferCapRequest", // 31
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"TermCapSetAckPDU", // 32
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"TermCapSetRejectPDU", // 33
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"T101Expiry", // 34
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// In-coming Terminal Capablity Exchange (CESE_IN) events
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"TermCapSetPDU", // 35
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"TermCapSetReleasePDU", // 36
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"CESE_TRANSFER_response", // 37
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"CESE_REJECT_request", // 38
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// Out-going Multiplex Table (MTSE_OUT) events
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"MTSE_TRANSFER_request", // 39
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"MultiplexEntrySendAckPDU", // 40
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"MultiplexEntrySendRejectPDU", // 41
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"T104Expiry", // 42
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// In-coming Multiplex Table (MTSE_IN) events
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"MultiplexEntrySendPDU", // 43
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"MultiplexEntrySendReleasePDU", // 44
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"MTSE_TRANSFER_response", // 45
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"MTSE_REJECT_request", // 46
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// Out-going Request Multiplex Entry (RMESE_OUT) events
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"RMESE_SEND_request", // 47
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"RequestMultiplexEntryAckPDU", // 48
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"RequestMultiplexEntryRejectPDU",// 49
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"T107Expiry", // 50
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// In-coming Request Multiplex Entry (RMESE_IN) events
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"RequestMultiplexEntryPDU", // 51
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"RequestMultiplexEntryReleasePDU",// 52
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"RMESE_SEND_response", // 53
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"RMESE_REJECT_request", // 54
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// Out-going Mode Request (MRSE_OUT) events
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"MRSE_TRANSFER_request", // 55
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"RequestModeAckPDU", // 56
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"RequestModeRejectPDU", // 57
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"T109Expiry", // 58
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// In-coming Mode Request (MRSE_IN) events
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"RequestModePDU", // 59
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"RequestModeReleasePDU", // 60
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"MRSE_TRANSFER_response", // 61
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"MRSE_REJECT_request", // 62
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// Out-going Maintenance Loop (MLSE_OUT) events
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"MLSE_LOOP_request", // 63
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"MLSE_OUT_RELEASE_request", // 64
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"MaintenanceLoopAckPDU", // 65
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"MaintenanceLoopRejectPDU", // 66
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"T102Expiry", // 67
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// In-coming Maintenance Loop (MLSE_IN) events
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"MaintenanceLoopRequestPDU", // 68
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"MaintenanceLoopOffCommandPDU", // 69
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"MLSE_LOOP_response", // 70
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"MLSE_IN_RELEASE_request", // 71
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// Master Slave Determination (MSDSE) events
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"MSDetReq", // 72
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"MSDetPDU", // 73
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"MSDetAckPDU", // 74
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"MSDetRejectPDU", // 75
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"MSDetReleasePDU", // 76
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"T106Expiry", // 77
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// Round Trip Delay Delay (RTDSE) events
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"RTDSE_TRANSFER_request", // 78
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"RoundTripDelayRequestPDU", // 79
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"RoundTripDelayResponsePDU", // 80
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"T105Expiry", // 81
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// Events with no associated state entity
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"NonStandardRequestPDU", // 82
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"NonStandardResponsePDU", // 83
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"NonStandardCommandPDU", // 84
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"NonStandardIndicationPDU", // 85
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"MiscellaneousRequestPDU", // 86
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"MiscellaneousResponsePDU", // 87
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"MiscellaneousCommandPDU", // 88
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"MiscellaneousIndicationPDU", // 89
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"CommunicationModeRequestPDU", // 90
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"CommunicationModeResponsePDU", // 91
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"CommunicationModeCommandPDU", // 92
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"SendTerminalCapabilitySetPDU", // 93
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"EncryptionCommandPDU", // 94
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"FlowControlCommandPDU", // 95
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"EndSessionCommandPDU", // 96
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"FunctionNotSupportedIndicationPDU",// 97
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"JitterIndicationPDU", // 98
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"H223SkewIndicationPDU", // 99
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"NewATMVCIndicationPDU", // 100
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"UserInputIndicationPDU", // 101
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"H2250MaximumSkewIndicationPDU", // 102
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"MCLocationIndicationPDU", // 103
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};
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// Output function definitions
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char * OutputName[NUM_OUTPUTS] =
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{
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// Out-going Open Uni-directional Logical Channel (LCSE_OUT) state functions
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"EstablishReleased", // 0
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"OpenAckAwaitingE", // 1
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"OpenRejAwaitingE", // 2
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"ReleaseAwaitingE", // 3
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"T103AwaitingE", // 4
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"ReleaseEstablished", // 5
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"OpenRejEstablished", // 6
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"CloseAckEstablished", // 7
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"CloseAckAwaitingR", // 8
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"OpenRejAwaitingR", // 9
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"T103AwaitingR", // 10
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"EstablishAwaitingR", // 11
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// In-coming Open Uni-directional Logical Channel (LCSE_IN) state functions
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"OpenReleased", // 12
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"CloseReleased", // 13
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"ResponseAwaiting", // 14
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"ReleaseAwaiting", // 15
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"CloseAwaiting", // 16
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"OpenAwaiting", // 17
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"CloseEstablished", // 18
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"OpenEstablished", // 19
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// Out-going Open Bi-directional Logical Channel (BLCSE_OUT) state functions
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"EstablishReqBReleased", // 20
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"OpenChannelAckBAwaitingE", // 21
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"OpenChannelRejBAwaitingE", // 22
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"ReleaseReqBOutAwaitingE", // 23
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"T103ExpiryBAwaitingE", // 24
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"ReleaseReqBEstablished", // 25
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"OpenChannelRejBEstablished", // 26
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"CloseChannelAckBEstablished", // 27
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"CloseChannelAckAwaitingR", // 28
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"OpenChannelRejBAwaitingR", // 29
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"T103ExpiryBAwaitingR", // 30
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"EstablishReqAwaitingR", // 31
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// In-coming Open Bi-directional Logical Channel (BLCSE_IN) state functions
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"OpenChannelBReleased", // 32
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"CloseChannelBReleased", // 33
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"EstablishResBAwaitingE", // 34
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"ReleaseReqBInAwaitingE", // 35
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"CloseChannelBAwaitingE", // 36
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"OpenChannelBAwaitingE", // 37
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"OpenChannelConfirmBAwaitingE", // 38
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"T103ExpiryBAwaitingC", // 39
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"OpenChannelConfirmBAwaitingC", // 40
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"CloseChannelBAwaitingC", // 41
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"OpenChannelBAwaitingC", // 42
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"CloseChannelBEstablished", // 43
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"OpenChannelBEstablished", // 44
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// Out-going Request Close Logical Channel (CLCSE_OUT) state functions
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"CloseRequestIdle", // 45
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"RequestCloseAckAwaitingR", // 46
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"RequestCloseRejAwaitingR", // 47
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"T108ExpiryAwaitingR", // 48
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// In-coming Request Close Logical Channel (CLCSE_IN) state functions
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"RequestCloseIdle", // 49
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"CloseResponseAwaitingR", // 50
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"RejectRequestAwaitingR", // 51
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"RequestCloseReleaseAwaitingR", // 52
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"RequestCloseAwaitingR", // 53
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// Out-going Terminal Capability Exchange (CESE_OUT) state functions
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"RequestCapIdle", // 54
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"TermCapAckAwaiting", // 55
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"TermCapRejAwaiting", // 56
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"T101ExpiryAwaiting", // 57
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// In-coming Terminal Capability Exchange (CESE_IN) state functions
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"TermCapSetIdle", // 58
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"ResponseCapAwaiting", // 59
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"RejectCapAwaiting", // 60
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"TermCapReleaseAwaiting", // 61
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"TermCapSetAwaiting", // 62
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// Out-going Multiplex Table (MTSE_OUT) state functions
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"MTSE0_TRANSFER_request", // 63
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"MTSE1_TRANSFER_request", // 64
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"MTSE1_MultiplexEntrySendAck", // 65
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"MTSE1_MultiplexEntrySendRej", // 66
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"MTSE1_T104Expiry", // 67
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// In-coming Multiplex Table (MTSE_IN) state functions
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"MTSE0_MultiplexEntrySend", // 68
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"MTSE1_MultiplexEntrySend", // 69
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"MTSE1_MultiplexEntrySendRelease",// 70
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"MTSE1_TRANSFER_response", // 71
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"MTSE1_REJECT_request", // 72
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// Out-going Request Multiplex Entry (RMESE_OUT) state functions
|
||
|
|
"RMESE0_SEND_request", // 73
|
||
|
|
"RMESE1_SEND_request", // 74
|
||
|
|
"RMESE1_RequestMuxEntryAck", // 75
|
||
|
|
"RMESE1_RequestMuxEntryRej", // 76
|
||
|
|
"RMESE1_T107Expiry", // 77
|
||
|
|
|
||
|
|
// In-coming Request Multiplex Entry (RMESE_IN) state functions
|
||
|
|
"RMESE0_RequestMuxEntry", // 78
|
||
|
|
"RMESE1_RequestMuxEntry", // 79
|
||
|
|
"RMESE1_RequestMuxEntryRelease", // 80
|
||
|
|
"RMESE1_SEND_response", // 81
|
||
|
|
"RMESE1_REJECT_request", // 82
|
||
|
|
|
||
|
|
// Out-going Request Mode (MRSE_OUT) state functions
|
||
|
|
"MRSE0_TRANSFER_request", // 83
|
||
|
|
"MRSE1_TRANSFER_request", // 84
|
||
|
|
"MRSE1_RequestModeAck", // 85
|
||
|
|
"MRSE1_RequestModeRej", // 86
|
||
|
|
"MRSE1_T109Expiry", // 87
|
||
|
|
|
||
|
|
// In-coming Request Mode (MRSE_IN) state functions
|
||
|
|
"MRSE0_RequestMode", // 88
|
||
|
|
"MRSE1_RequestMode", // 89
|
||
|
|
"MRSE1_RequestModeRelease", // 90
|
||
|
|
"MRSE1_TRANSFER_response", // 91
|
||
|
|
"MRSE1_REJECT_request", // 92
|
||
|
|
|
||
|
|
// Out-going Request Mode (MLSE_OUT) state functions
|
||
|
|
"MLSE0_LOOP_request", // 93
|
||
|
|
"MLSE1_MaintenanceLoopAck", // 94
|
||
|
|
"MLSE1_MaintenanceLoopRej", // 95
|
||
|
|
"MLSE1_OUT_RELEASE_request", // 96
|
||
|
|
"MLSE1_T102Expiry", // 97
|
||
|
|
"MLSE2_MaintenanceLoopRej", // 98
|
||
|
|
"MLSE2_OUT_RELEASE_request", // 99
|
||
|
|
|
||
|
|
// In-coming Request Mode (MLSE_IN) state functions
|
||
|
|
"MLSE0_MaintenanceLoopRequest", // 100
|
||
|
|
"MLSE1_MaintenanceLoopRequest", // 101
|
||
|
|
"MLSE1_MaintenanceLoopOffCommand",// 102
|
||
|
|
"MLSE1_LOOP_response", // 103
|
||
|
|
"MLSE1_IN_RELEASE_request", // 104
|
||
|
|
"MLSE2_MaintenanceLoopRequest", // 105
|
||
|
|
"MLSE2_MaintenanceLoopOffCommand",// 106
|
||
|
|
|
||
|
|
// Master Slave Determination (MSDSE) state functions
|
||
|
|
"DetRequestIdle", // 107
|
||
|
|
"MSDetIdle", // 108
|
||
|
|
"MSDetAckOutgoing", // 109
|
||
|
|
"MSDetOutgoing", // 110
|
||
|
|
"MSDetRejOutgoing", // 111
|
||
|
|
"MSDetReleaseOutgoing", // 112
|
||
|
|
"T106ExpiryOutgoing", // 113
|
||
|
|
"MSDetAckIncoming", // 114
|
||
|
|
"MSDetIncoming", // 115
|
||
|
|
"MSDetRejIncoming", // 116
|
||
|
|
"MSDetReleaseIncoming", // 117
|
||
|
|
"T106ExpiryIncoming", // 118
|
||
|
|
|
||
|
|
// Round Trip Delay (RTDSE) state functions
|
||
|
|
"RTDSE0_TRANSFER_request", // 119
|
||
|
|
"RTDSE0_RoundTripDelayRequest", // 120
|
||
|
|
"RTDSE1_TRANSFER_request", // 121
|
||
|
|
"RTDSE1_RoundTripDelayRequest", // 122
|
||
|
|
"RTDSE1_RoundTripDelayResponse", // 123
|
||
|
|
"RTDSE1_T105Expiry", // 124
|
||
|
|
};
|
||
|
|
#endif // (_DEBUG)
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
typedef HRESULT (*STATE_FUNCTION)(Object_t *pObject, PDU_t *pPdu);
|
||
|
|
|
||
|
|
// Output function defintions
|
||
|
|
static STATE_FUNCTION StateFun[] =
|
||
|
|
{
|
||
|
|
// Out-going Open Uni-directional Logical Channel (LCSE_OUT) state functions
|
||
|
|
establishReleased, // 0
|
||
|
|
openAckAwaitingE, // 1
|
||
|
|
openRejAwaitingE, // 2
|
||
|
|
releaseAwaitingE, // 3
|
||
|
|
t103AwaitingE, // 4
|
||
|
|
releaseEstablished, // 5
|
||
|
|
openRejEstablished, // 6
|
||
|
|
closeAckEstablished, // 7
|
||
|
|
closeAckAwaitingR, // 8
|
||
|
|
openRejAwaitingR, // 9
|
||
|
|
t103AwaitingR, // 10
|
||
|
|
establishAwaitingR, // 11
|
||
|
|
|
||
|
|
// In-coming Open Uni-directional Logical Channel (LCSE_IN) state functions
|
||
|
|
openReleased, // 12
|
||
|
|
closeReleased, // 13
|
||
|
|
responseAwaiting, // 14
|
||
|
|
releaseAwaiting, // 15
|
||
|
|
closeAwaiting, // 16
|
||
|
|
openAwaiting, // 17
|
||
|
|
closeEstablished, // 18
|
||
|
|
openEstablished, // 19
|
||
|
|
|
||
|
|
// Out-going Open Bi-directional Logical Channel (BLCSE_OUT) state functions
|
||
|
|
establishReqBReleased, // 20
|
||
|
|
openChannelAckBAwaitingE, // 21
|
||
|
|
openChannelRejBAwaitingE, // 22
|
||
|
|
releaseReqBOutAwaitingE, // 23
|
||
|
|
t103ExpiryBAwaitingE, // 24
|
||
|
|
releaseReqBEstablished, // 25
|
||
|
|
openChannelRejBEstablished, // 26
|
||
|
|
closeChannelAckBEstablished, // 27
|
||
|
|
closeChannelAckAwaitingR, // 28
|
||
|
|
openChannelRejBAwaitingR, // 29
|
||
|
|
t103ExpiryBAwaitingR, // 30
|
||
|
|
establishReqAwaitingR, // 31
|
||
|
|
|
||
|
|
// In-coming Open Bi-directional Logical Channel (BLCSE_IN) state functions
|
||
|
|
openChannelBReleased, // 32
|
||
|
|
closeChannelBReleased, // 33
|
||
|
|
establishResBAwaitingE, // 34
|
||
|
|
releaseReqBInAwaitingE, // 35
|
||
|
|
closeChannelBAwaitingE, // 36
|
||
|
|
openChannelBAwaitingE, // 37
|
||
|
|
openChannelConfirmBAwaitingE, // 38
|
||
|
|
t103ExpiryBAwaitingC, // 39
|
||
|
|
openChannelConfirmBAwaitingC, // 40
|
||
|
|
closeChannelBAwaitingC, // 41
|
||
|
|
openChannelBAwaitingC, // 42
|
||
|
|
closeChannelBEstablished, // 43
|
||
|
|
openChannelBEstablished, // 44
|
||
|
|
|
||
|
|
// Out-going Request Close Logical Channel (CLCSE_OUT) state functions
|
||
|
|
closeRequestIdle, // 45
|
||
|
|
requestCloseAckAwaitingR, // 46
|
||
|
|
requestCloseRejAwaitingR, // 47
|
||
|
|
t108ExpiryAwaitingR, // 48
|
||
|
|
|
||
|
|
// In-coming Request Close Logical Channel (CLCSE_IN) state functions
|
||
|
|
requestCloseIdle, // 49
|
||
|
|
closeResponseAwaitingR, // 50
|
||
|
|
rejectRequestAwaitingR, // 51
|
||
|
|
requestCloseReleaseAwaitingR, // 52
|
||
|
|
requestCloseAwaitingR, // 53
|
||
|
|
|
||
|
|
// Out-going Terminal Capability Exchange (CESE_OUT) state functions
|
||
|
|
requestCapIdle, // 54
|
||
|
|
termCapAckAwaiting, // 55
|
||
|
|
termCapRejAwaiting, // 56
|
||
|
|
t101ExpiryAwaiting, // 57
|
||
|
|
|
||
|
|
// In-coming Terminal Capability Exchange (CESE_IN) state functions
|
||
|
|
termCapSetIdle, // 58
|
||
|
|
responseCapAwaiting, // 59
|
||
|
|
rejectCapAwaiting, // 60
|
||
|
|
termCapReleaseAwaiting, // 61
|
||
|
|
termCapSetAwaiting, // 62
|
||
|
|
|
||
|
|
// Out-going Multiplex Table (MTSE_OUT) state functions
|
||
|
|
MTSE0_TRANSFER_requestF, // 63
|
||
|
|
MTSE1_TRANSFER_requestF, // 64
|
||
|
|
MTSE1_MultiplexEntrySendAckF, // 65
|
||
|
|
MTSE1_MultiplexEntrySendRejF, // 66
|
||
|
|
MTSE1_T104ExpiryF, // 67
|
||
|
|
|
||
|
|
// In-coming Multiplex Table (MTSE_IN) state functions
|
||
|
|
MTSE0_MultiplexEntrySendF, // 68
|
||
|
|
MTSE1_MultiplexEntrySendF, // 69
|
||
|
|
MTSE1_MultiplexEntrySendReleaseF,// 70
|
||
|
|
MTSE1_TRANSFER_responseF, // 71
|
||
|
|
MTSE1_REJECT_requestF, // 72
|
||
|
|
|
||
|
|
// Out-going Request Multiplex Entry (RMESE_OUT) state functions
|
||
|
|
RMESE0_SEND_requestF, // 73
|
||
|
|
RMESE1_SEND_requestF, // 74
|
||
|
|
RMESE1_RequestMuxEntryAckF, // 75
|
||
|
|
RMESE1_RequestMuxEntryRejF, // 76
|
||
|
|
RMESE1_T107ExpiryF, // 77
|
||
|
|
|
||
|
|
// In-coming Request Multiplex Entry (RMESE_IN) state functions
|
||
|
|
RMESE0_RequestMuxEntryF, // 78
|
||
|
|
RMESE1_RequestMuxEntryF, // 79
|
||
|
|
RMESE1_RequestMuxEntryReleaseF, // 80
|
||
|
|
RMESE1_SEND_responseF, // 81
|
||
|
|
RMESE1_REJECT_requestF, // 82
|
||
|
|
|
||
|
|
// Out-going Request Mode (MRSE_OUT) state functions
|
||
|
|
MRSE0_TRANSFER_requestF, // 83
|
||
|
|
MRSE1_TRANSFER_requestF, // 84
|
||
|
|
MRSE1_RequestModeAckF, // 85
|
||
|
|
MRSE1_RequestModeRejF, // 86
|
||
|
|
MRSE1_T109ExpiryF, // 87
|
||
|
|
|
||
|
|
// In-coming Request Mode (MRSE_OUT) state functions
|
||
|
|
MRSE0_RequestModeF, // 88
|
||
|
|
MRSE1_RequestModeF, // 89
|
||
|
|
MRSE1_RequestModeReleaseF, // 90
|
||
|
|
MRSE1_TRANSFER_responseF, // 91
|
||
|
|
MRSE1_REJECT_requestF, // 92
|
||
|
|
|
||
|
|
// Out-going Request Mode (MLSE_OUT) state functions
|
||
|
|
MLSE0_LOOP_requestF, // 93
|
||
|
|
MLSE1_MaintenanceLoopAckF, // 94
|
||
|
|
MLSE1_MaintenanceLoopRejF, // 95
|
||
|
|
MLSE1_OUT_RELEASE_requestF, // 96
|
||
|
|
MLSE1_T102ExpiryF, // 97
|
||
|
|
MLSE2_MaintenanceLoopRejF, // 98
|
||
|
|
MLSE2_OUT_RELEASE_requestF, // 99
|
||
|
|
|
||
|
|
// In-coming Request Mode (MLSE_IN) state functions
|
||
|
|
MLSE0_MaintenanceLoopRequestF, // 100
|
||
|
|
MLSE1_MaintenanceLoopRequestF, // 101
|
||
|
|
MLSE1_MaintenanceLoopOffCommandF,// 102
|
||
|
|
MLSE1_LOOP_responseF, // 103
|
||
|
|
MLSE1_IN_RELEASE_requestF, // 104
|
||
|
|
MLSE2_MaintenanceLoopRequestF, // 105
|
||
|
|
MLSE2_MaintenanceLoopOffCommandF,// 106
|
||
|
|
|
||
|
|
// Master Slave Determination (MSDSE) state functions
|
||
|
|
detRequestIdle, // 107
|
||
|
|
msDetIdle, // 108
|
||
|
|
msDetAckOutgoing, // 109
|
||
|
|
msDetOutgoing, // 110
|
||
|
|
msDetRejOutgoing, // 111
|
||
|
|
msDetReleaseOutgoing, // 112
|
||
|
|
t106ExpiryOutgoing, // 113
|
||
|
|
msDetAckIncoming, // 114
|
||
|
|
msDetIncoming, // 115
|
||
|
|
msDetRejIncoming, // 116
|
||
|
|
msDetReleaseIncoming, // 117
|
||
|
|
t106ExpiryIncoming, // 118
|
||
|
|
|
||
|
|
// Round Trip Delay (RTDSE) state functions
|
||
|
|
RTDSE0_TRANSFER_requestF, // 119
|
||
|
|
RTDSE0_RoundTripDelayRequestF, // 120
|
||
|
|
RTDSE1_TRANSFER_requestF, // 121
|
||
|
|
RTDSE1_RoundTripDelayRequestF, // 122
|
||
|
|
RTDSE1_RoundTripDelayResponseF, // 123
|
||
|
|
RTDSE1_T105ExpiryF, // 124
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*********************************************
|
||
|
|
*
|
||
|
|
* State table for the finite state machine
|
||
|
|
*
|
||
|
|
*********************************************/
|
||
|
|
|
||
|
|
Output_t StateTable[NUM_STATE_EVENTS][MAXSTATES] =
|
||
|
|
{
|
||
|
|
// Out-going Uni-directional Logical Channel (LCSE_OUT) events
|
||
|
|
{EstablishReleased,IGNORE, IGNORE, EstablishAwaitingR}, // ReqUEstablish
|
||
|
|
{IGNORE, OpenAckAwaitingE, IGNORE, IGNORE }, // OpenUChAckPDU
|
||
|
|
{IGNORE, OpenRejAwaitingE, OpenRejEstablished, OpenRejAwaitingR }, // OpenUChRejectPDU
|
||
|
|
{IGNORE, IGNORE, CloseAckEstablished,CloseAckAwaitingR }, // CloseUChAckPDU
|
||
|
|
{IGNORE, ReleaseAwaitingE, ReleaseEstablished, IGNORE }, // ReqURelease
|
||
|
|
{BAD, T103AwaitingE, BAD, T103AwaitingR }, // T103Expiry
|
||
|
|
|
||
|
|
// In-coming Uni-directional Logical Channel (LCSE_IN) events
|
||
|
|
{OpenReleased, OpenAwaiting, OpenEstablished, BAD }, // OpenUChPDU
|
||
|
|
{CloseReleased, CloseAwaiting, CloseEstablished, BAD }, // CloseUChPDU
|
||
|
|
{IGNORE, ResponseAwaiting, IGNORE, BAD }, // ResponseUEstablish
|
||
|
|
{IGNORE, ReleaseAwaiting, IGNORE, BAD }, // EstablishUReject
|
||
|
|
|
||
|
|
// Out-going Bi-directional Logical Channel (BLCSE_OUT) events
|
||
|
|
{EstablishReqBReleased,IGNORE, IGNORE, EstablishReqAwaitingR },// ReqBEstablish
|
||
|
|
{IGNORE, OpenChannelAckBAwaitingE, IGNORE, IGNORE },// OpenBChAckPDU
|
||
|
|
{IGNORE, OpenChannelRejBAwaitingE, OpenChannelRejBEstablished, OpenChannelRejBAwaitingR},// OpenBChRejectPDU
|
||
|
|
{IGNORE, IGNORE, CloseChannelAckBEstablished, CloseChannelAckAwaitingR},// CloseBChAckPDU
|
||
|
|
{IGNORE, ReleaseReqBOutAwaitingE, ReleaseReqBEstablished, IGNORE },// ReqClsBLCSE
|
||
|
|
{IGNORE, IGNORE, IGNORE, IGNORE },// RspConfirmBLCSE
|
||
|
|
{BAD, T103ExpiryBAwaitingE, BAD, T103ExpiryBAwaitingR },// T103OutExpiry
|
||
|
|
|
||
|
|
// In-coming Bi-directional Logical Channel (BLCSE_IN) events
|
||
|
|
{OpenChannelBReleased, OpenChannelBAwaitingE, OpenChannelBAwaitingC, OpenChannelBEstablished },// OpenBChPDU
|
||
|
|
{CloseChannelBReleased,CloseChannelBAwaitingE, CloseChannelBAwaitingC, CloseChannelBEstablished},// CloseBChPDU
|
||
|
|
{IGNORE, EstablishResBAwaitingE, IGNORE, IGNORE },// ResponseBEstablish
|
||
|
|
{IGNORE, OpenChannelConfirmBAwaitingE,OpenChannelConfirmBAwaitingC,IGNORE },// OpenBChConfirmPDU
|
||
|
|
{IGNORE, ReleaseReqBInAwaitingE, IGNORE, IGNORE },// OpenRejectBLCSE
|
||
|
|
{BAD, BAD, T103ExpiryBAwaitingC, BAD },// T103InExpiry
|
||
|
|
|
||
|
|
// Out-going Request Close Logical Channel (CLCSE_OUT) events
|
||
|
|
{CloseRequestIdle, IGNORE, BAD,BAD}, // ReqClose
|
||
|
|
{IGNORE, RequestCloseAckAwaitingR, BAD,BAD}, // ReqChCloseAckPDU
|
||
|
|
{IGNORE, RequestCloseRejAwaitingR, BAD,BAD}, // ReqChCloseRejectPDU
|
||
|
|
{BAD, T108ExpiryAwaitingR, BAD,BAD}, // T108Expiry
|
||
|
|
|
||
|
|
// In-coming Request Close Logical Channel (CLCSE_IN) events
|
||
|
|
{RequestCloseIdle, RequestCloseAwaitingR, BAD,BAD}, // ReqChClosePDU
|
||
|
|
{IGNORE, RequestCloseReleaseAwaitingR, BAD,BAD}, // ReqChCloseReleasePDU
|
||
|
|
{IGNORE, CloseResponseAwaitingR, BAD,BAD}, // CLCSE_CLOSE_response
|
||
|
|
{IGNORE, RejectRequestAwaitingR, BAD,BAD}, // CLCSE_REJECT_request
|
||
|
|
|
||
|
|
// Out-going Terminal Capablity Exchange (CESE_OUT) events
|
||
|
|
{RequestCapIdle, IGNORE, BAD,BAD}, // TransferCapRequest
|
||
|
|
{IGNORE, TermCapAckAwaiting, BAD,BAD}, // TermCapSetAckPDU
|
||
|
|
{IGNORE, TermCapRejAwaiting, BAD,BAD}, // TermCapSetRejectPDU
|
||
|
|
{BAD, T101ExpiryAwaiting, BAD,BAD}, // T101Expiry
|
||
|
|
|
||
|
|
// In-coming Terminal Capablity Exchange (CESE_IN) events
|
||
|
|
{TermCapSetIdle, TermCapSetAwaiting, BAD,BAD}, // TermCapSetPDU
|
||
|
|
{IGNORE, TermCapReleaseAwaiting, BAD,BAD}, // TermCapSetRelPDU
|
||
|
|
{IGNORE, ResponseCapAwaiting, BAD,BAD}, // CESE_TRANSFER_response
|
||
|
|
{IGNORE, RejectCapAwaiting, BAD,BAD}, // CESE_REJECT_request
|
||
|
|
|
||
|
|
// Out-going Multiplex Table (MTSE_OUT) events
|
||
|
|
{MTSE0_TRANSFER_request, MTSE1_TRANSFER_request, BAD,BAD}, // TRANSFER_request
|
||
|
|
{IGNORE, MTSE1_MultiplexEntrySendAck, BAD,BAD}, // MultiplexEntrySendAck
|
||
|
|
{IGNORE, MTSE1_MultiplexEntrySendRej, BAD,BAD}, // MultiplexEntrySendReject
|
||
|
|
{BAD, MTSE1_T104Expiry, BAD,BAD}, // T104Expiry
|
||
|
|
|
||
|
|
// In-coming Multiplex Table (MTSE_IN) events
|
||
|
|
{MTSE0_MultiplexEntrySend, MTSE1_MultiplexEntrySend, BAD,BAD}, // MultiplexEntrySend
|
||
|
|
{IGNORE, MTSE1_MultiplexEntrySendRelease,BAD,BAD}, // MultiplexEntrySendRelease
|
||
|
|
{IGNORE, MTSE1_TRANSFER_response, BAD,BAD}, // MTSE_TRANSFER_response
|
||
|
|
{IGNORE, MTSE1_REJECT_request, BAD,BAD}, // MTSE_REJECT_request
|
||
|
|
|
||
|
|
// Out-going Request Multiplex Entry (RMESE_OUT) events
|
||
|
|
{RMESE0_SEND_request, RMESE1_SEND_request, BAD,BAD}, // RMESE_SEND_request
|
||
|
|
{IGNORE, RMESE1_RequestMuxEntryAck, BAD,BAD}, // RequestMultiplexEntryAck
|
||
|
|
{IGNORE, RMESE1_RequestMuxEntryRej, BAD,BAD}, // RequestMultiplexEntryReject
|
||
|
|
{BAD, RMESE1_T107Expiry, BAD,BAD}, // T107Expiry
|
||
|
|
|
||
|
|
// In-coming Request Multiplex Entry (RMESE_IN) events
|
||
|
|
{RMESE0_RequestMuxEntry, RMESE1_RequestMuxEntry, BAD,BAD}, // RequestMultiplexEntry
|
||
|
|
{IGNORE, RMESE1_RequestMuxEntryRelease, BAD,BAD}, // RequestMultiplexEntryRelease
|
||
|
|
{BAD, RMESE1_SEND_response, BAD,BAD}, // RMESE_SEND_response
|
||
|
|
{BAD, RMESE1_REJECT_request, BAD,BAD}, // RMESE_REJECT_request
|
||
|
|
|
||
|
|
// Out-going Mode Request (MRSE_OUT) events
|
||
|
|
{MRSE0_TRANSFER_request, MRSE1_TRANSFER_request, BAD,BAD}, // MRSE_TRANSFER_request
|
||
|
|
{IGNORE, MRSE1_RequestModeAck, BAD,BAD}, // RequestModeAck
|
||
|
|
{IGNORE, MRSE1_RequestModeRej, BAD,BAD}, // RequestModeReject
|
||
|
|
{BAD, MRSE1_T109Expiry, BAD,BAD}, // T109Expiry
|
||
|
|
|
||
|
|
// In-coming Mode Request (MRSE_IN) events
|
||
|
|
{MRSE0_RequestMode, MRSE1_RequestMode, BAD,BAD}, // RequestMode
|
||
|
|
{IGNORE, MRSE1_RequestModeRelease, BAD,BAD}, // RequestModeRelease
|
||
|
|
{BAD, MRSE1_TRANSFER_response, BAD,BAD}, // MRSE_TRANSFER_response
|
||
|
|
{BAD, MRSE1_REJECT_request, BAD,BAD}, // MRSE_REJECT_request
|
||
|
|
|
||
|
|
// Out-going Maintenance Loop (MLSE_OUT) events
|
||
|
|
{MLSE0_LOOP_request, BAD, BAD, BAD}, // MLSE_LOOP_request
|
||
|
|
{BAD, MLSE1_OUT_RELEASE_request, MLSE2_OUT_RELEASE_request, BAD}, // MLSE_OUT_RELEASE_request
|
||
|
|
{IGNORE, MLSE1_MaintenanceLoopAck, IGNORE, BAD}, // MaintenanceLoopAck
|
||
|
|
{IGNORE, MLSE1_MaintenanceLoopRej, MLSE2_MaintenanceLoopRej, BAD}, // MaintenanceLoopReject
|
||
|
|
{BAD, MLSE1_T102Expiry, BAD, BAD}, // T102Expiry
|
||
|
|
|
||
|
|
// In-coming Maintenance Loop (MLSE_IN) events
|
||
|
|
{MLSE0_MaintenanceLoopRequest, MLSE1_MaintenanceLoopRequest, MLSE2_MaintenanceLoopRequest, BAD}, // MaintenanceLoopRequest
|
||
|
|
{IGNORE, MLSE1_MaintenanceLoopOffCommand,MLSE2_MaintenanceLoopOffCommand,BAD}, // MaintenanceLoopOffCommand
|
||
|
|
{BAD, MLSE1_LOOP_response, BAD, BAD}, // MLSE_LOOP_response
|
||
|
|
{BAD, MLSE1_IN_RELEASE_request, BAD, BAD}, // MLSE_IN_RELEASE_request
|
||
|
|
|
||
|
|
// Master Slave Determination (MSDSE) events
|
||
|
|
{DetRequestIdle, IGNORE, IGNORE, BAD}, // MSDetReq
|
||
|
|
{MSDetIdle, MSDetOutgoing, MSDetIncoming, BAD}, // MSDetPDU
|
||
|
|
{IGNORE, MSDetAckOutgoing, MSDetAckIncoming, BAD}, // MSDetAckPDU
|
||
|
|
{IGNORE, MSDetRejOutgoing, MSDetRejIncoming, BAD}, // MSDetRejectPDU
|
||
|
|
{IGNORE, MSDetReleaseOutgoing, MSDetReleaseIncoming,BAD}, // MSDetReleasePDU
|
||
|
|
{BAD, T106ExpiryOutgoing, T106ExpiryIncoming, BAD}, // T106Expiry
|
||
|
|
|
||
|
|
// Round Trip Delay Delay (RTDSE) events
|
||
|
|
{RTDSE0_TRANSFER_request, RTDSE1_TRANSFER_request, BAD,BAD}, // RTDSE_TRANSFER_request
|
||
|
|
{RTDSE0_RoundTripDelayRequest, RTDSE0_RoundTripDelayRequest, BAD,BAD}, // RoundTripDelayRequest
|
||
|
|
{IGNORE, RTDSE1_RoundTripDelayResponse, BAD,BAD}, // RoundTripDelayResponse
|
||
|
|
{BAD, RTDSE1_T105Expiry, BAD,BAD}, // T105Expiry
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* NAME
|
||
|
|
* StateMachine() - engine for finite state machine
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* PARAMETERS
|
||
|
|
* INPUT pObject pointer to an FSM object structure
|
||
|
|
* INTPUT event input to the finite state machine
|
||
|
|
*
|
||
|
|
* RETURN VALUE
|
||
|
|
* error codes defined in h245api.h
|
||
|
|
*/
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
StateMachine(Object_t *pObject, PDU_t *pPdu, Event_t Event)
|
||
|
|
{
|
||
|
|
UINT uFunction;
|
||
|
|
HRESULT lError;
|
||
|
|
|
||
|
|
ASSERT(pObject != NULL);
|
||
|
|
|
||
|
|
if (Event > NUM_EVENTS)
|
||
|
|
{
|
||
|
|
H245TRACE(pObject->dwInst, 1, "StateMachine: Invalid Event %d", Event);
|
||
|
|
return H245_ERROR_PARAM;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pObject->State > MAXSTATES)
|
||
|
|
{
|
||
|
|
H245TRACE(pObject->dwInst, 1, "StateMachine: Invalid State %d", pObject->State);
|
||
|
|
return H245_ERROR_INVALID_STATE;
|
||
|
|
}
|
||
|
|
|
||
|
|
++(pObject->uNestLevel);
|
||
|
|
|
||
|
|
#if defined(_DEBUG)
|
||
|
|
H245TRACE(pObject->dwInst, 2, "StateMachine: Entity=%s(%d) State=%d Event=%s(%d)",
|
||
|
|
EntityName[pObject->Entity], pObject->Entity,
|
||
|
|
pObject->State,
|
||
|
|
EventName[Event], Event);
|
||
|
|
#else
|
||
|
|
H245TRACE(pObject->dwInst, 2, "StateMachine: Entity=%d State=%d Event=%d",
|
||
|
|
pObject->Entity, pObject->State, Event);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
uFunction = StateTable[Event][pObject->State];
|
||
|
|
if (uFunction < (sizeof (StateFun) / sizeof(StateFun[0])))
|
||
|
|
{
|
||
|
|
/* indicating a valid transition */
|
||
|
|
#if defined(_DEBUG)
|
||
|
|
H245TRACE(pObject->dwInst, 2, "StateMachine: Function=%s(%d)",
|
||
|
|
OutputName[uFunction], uFunction);
|
||
|
|
#else // (_DEBUG)
|
||
|
|
H245TRACE(pObject->dwInst, 2, "StateMachine: Function=%d", uFunction);
|
||
|
|
#endif // (_DEBUG)
|
||
|
|
|
||
|
|
lError = (*StateFun[uFunction])(pObject, pPdu);
|
||
|
|
|
||
|
|
#if defined(_DEBUG)
|
||
|
|
H245TRACE(pObject->dwInst, 2, "StateMachine: Entity=%s(%d) New State=%d",
|
||
|
|
EntityName[pObject->Entity], pObject->Entity, pObject->State);
|
||
|
|
#else
|
||
|
|
H245TRACE(pObject->dwInst, 2, "StateMachine: Entity=%d New State=%d",
|
||
|
|
pObject->Entity, pObject->State);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
else if (uFunction == IGNORE)
|
||
|
|
{
|
||
|
|
H245TRACE(pObject->dwInst, 2, "StateMachine: Event ignored");
|
||
|
|
#if defined(_DEBUG)
|
||
|
|
H245TRACE(pObject->dwInst, 2, "StateMachine: Event Ignored; Entity=%s(%d) State=%d Event=%s(%d)",
|
||
|
|
EntityName[pObject->Entity], pObject->Entity,
|
||
|
|
pObject->State,
|
||
|
|
EventName[Event], Event);
|
||
|
|
#else
|
||
|
|
H245TRACE(pObject->dwInst, 2, "StateMachine: Entity=%d State=%d Event=%d",
|
||
|
|
pObject->Entity, pObject->State, Event);
|
||
|
|
#endif
|
||
|
|
lError = H245_ERROR_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
#if defined(_DEBUG)
|
||
|
|
H245TRACE(pObject->dwInst, 2, "StateMachine: Event Invalid; Entity=%s(%d) State=%d Event=%s(%d)",
|
||
|
|
EntityName[pObject->Entity], pObject->Entity,
|
||
|
|
pObject->State,
|
||
|
|
EventName[Event], Event);
|
||
|
|
#else
|
||
|
|
H245TRACE(pObject->dwInst, 2, "StateMachine: Event Invalid; Entity=%d State=%d Event=%d",
|
||
|
|
pObject->Entity, pObject->State, Event);
|
||
|
|
#endif
|
||
|
|
lError = H245_ERROR_INVALID_STATE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (--(pObject->uNestLevel) == 0 && pObject->State == 0)
|
||
|
|
{
|
||
|
|
ObjectDestroy(pObject);
|
||
|
|
}
|
||
|
|
|
||
|
|
return lError;
|
||
|
|
} // StateMachine()
|