1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/mm/devsound/sounddevbt/src/A2dpBlueTooth/headsetaudioif/GavdpStateMachine.cpp Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,1747 @@
1.4 +// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of "Eclipse Public License v1.0"
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +//
1.18 +
1.19 +#include "A2dpCodecUtilities.h"
1.20 +#include "GavdpStateMachine.h"
1.21 +
1.22 +
1.23 +/**
1.24 +GAVDP State Machine Panics
1.25 +**/
1.26 +enum TGavdpStateMachinePanic
1.27 + {
1.28 + EGavdpStateMachineBadState,//0
1.29 + EGavdpStateMachineBadConfigByRemoteHeadsetState,//1
1.30 + EGavdpStateMachineBadBTAddr,//2
1.31 + EGavdpStateMachineUnexpectedCallback,//3
1.32 + EGavdpStateMachineDataTypeMismatch//4
1.33 + };
1.34 +
1.35 +
1.36 +static void Panic(TGavdpStateMachinePanic aPanic)
1.37 +// Panic client
1.38 + {
1.39 + _LIT(KGavdpStateMachinePanicName, "GAVDP State Mchn");
1.40 + User::Panic(KGavdpStateMachinePanicName, aPanic);
1.41 + }
1.42 +
1.43 +
1.44 +/**
1.45 +Utility function to map a bluetooth code to a standard SymbianOS code
1.46 +Where a standard Symbian error code exists the error is mapped
1.47 +to the standard code. Ideally all HCI, L2CAP, AVDTP, GAVDP errors
1.48 +should be mapped to standard SymbianOS codes since bluetooth specific
1.49 +error codes aren't meaningful in the multimedia domain
1.50 +*/
1.51 +static TInt ConvertToStandardSymbianOSError(TInt aError)
1.52 + {
1.53 + TInt error;
1.54 +
1.55 + switch (aError)
1.56 + {
1.57 + case KHCIErrorBase-EPageTimedOut://-6004
1.58 + error = KErrCouldNotConnect;
1.59 + break;
1.60 + case KHCIErrorBase-EAuthenticationFailure://-6005
1.61 + error = KErrCouldNotConnect;
1.62 + break;
1.63 + case KHCIErrorBase-EPairingNotAllowed: //-6024
1.64 + error = KErrCouldNotConnect;
1.65 + break;
1.66 + case KHCIErrorBase-ELMPResponseTimeout: //-6034
1.67 + error = KErrTimedOut;
1.68 + break;
1.69 + case KErrHCIConnectFailed: //-6304
1.70 + error = KErrCouldNotConnect;
1.71 + break;
1.72 + case KErrHCILinkDisconnection: //-6305
1.73 + error = KErrDisconnected;
1.74 + break;
1.75 + default:
1.76 + error = aError;
1.77 + break;
1.78 + }
1.79 + return error;
1.80 + }
1.81 +
1.82 +
1.83 +/**
1.84 +Creates CGAVDPStateMachine
1.85 +
1.86 +@internalComponent
1.87 +@return CGAVDPStateMachine*
1.88 +*/
1.89 +CGAVDPStateMachine* CGAVDPStateMachine::NewL(MGAVDPStateChangeObserver& aGAVDPStateChangeObserver, CA2dpAudioCodecConfiguration& aA2dpCodecSettings, RSocketServ& aSocketServer)
1.90 + {
1.91 + CGAVDPStateMachine* self = new(ELeave) CGAVDPStateMachine(aGAVDPStateChangeObserver, aA2dpCodecSettings, aSocketServer);
1.92 + CleanupStack::PushL(self);
1.93 + self->ConstructL();
1.94 + CleanupStack::Pop(self);
1.95 + return self;
1.96 + }
1.97 +
1.98 +
1.99 +/**
1.100 +Constructor
1.101 +[TODO] change default stereo mode to EMMFJoint when hardware has sufficient bandwidth
1.102 +Note we make the AO priority one less than normal to give the AOs in GAVDP
1.103 +preference
1.104 +*/
1.105 +CGAVDPStateMachine::CGAVDPStateMachine(MGAVDPStateChangeObserver& aGAVDPStateChangeObserver, CA2dpAudioCodecConfiguration& aA2dpCodecSettings, RSocketServ& aSocketServer) : CActive(EPriorityNormal-1),
1.106 +iGAVDPStateChangeObserver(aGAVDPStateChangeObserver) ,iA2dpCodecSettings(aA2dpCodecSettings), iSocketServer(aSocketServer)
1.107 + {
1.108 + CActiveScheduler::Add(this);
1.109 + }
1.110 +
1.111 +
1.112 +void CGAVDPStateMachine::ConstructL()
1.113 + {
1.114 + User::LeaveIfError(iGavdp.Open(*this, iSocketServer));
1.115 + User::LeaveIfError(RegisterLocalSEP());
1.116 + iSignallingTransactionTimeout = CGavdpTimeout::NewL(*this);
1.117 + }
1.118 +
1.119 +
1.120 +/**
1.121 +Internal function to register local SEPs with GAVDP
1.122 +The function sets the iSymbianDeviceSEID to the TSEID
1.123 +of the Symbian device
1.124 +*/
1.125 +TInt CGAVDPStateMachine::RegisterLocalSEP()
1.126 + {
1.127 + //register SEPs - currently SBC & mp3 SEPs are supported
1.128 + TAvdtpSEPInfo avdtpSEPInfo;
1.129 + avdtpSEPInfo.SetInUse(EFalse);
1.130 + avdtpSEPInfo.SetMediaType(EAvdtpMediaTypeAudio);
1.131 + avdtpSEPInfo.SetIsSink(EFalse);
1.132 + TInt err = iGavdp.RegisterSEP(avdtpSEPInfo);
1.133 + TUsableSEP sep;
1.134 + sep.iSEID = avdtpSEPInfo.SEID();
1.135 + sep.iDataType = KMMFFourCCCodeSBC;
1.136 + err = iSymbianDeviceSEPs.Append(sep);
1.137 +
1.138 + if (!err)
1.139 + {
1.140 + avdtpSEPInfo.SetInUse(EFalse);
1.141 + avdtpSEPInfo.SetMediaType(EAvdtpMediaTypeAudio);
1.142 + avdtpSEPInfo.SetIsSink(EFalse);
1.143 + err = iGavdp.RegisterSEP(avdtpSEPInfo);
1.144 + if (!err)
1.145 + {
1.146 + sep.iSEID = avdtpSEPInfo.SEID();
1.147 + sep.iDataType = KMMFFourCCCodeMP3;
1.148 + err = iSymbianDeviceSEPs.Append(sep);
1.149 + }
1.150 + }
1.151 + if (!err)
1.152 + {
1.153 + TBool SEPDataTypeFound(EFalse);
1.154 + for(TUint i = 0; i< iSymbianDeviceSEPs.Count();i++)
1.155 + {
1.156 + if (iSymbianDeviceSEPs[i].iDataType == iA2dpCodecSettings.HeadsetCodecDataType())
1.157 + {
1.158 + iSymbianDeviceSEID = iSymbianDeviceSEPs[i].iSEID;
1.159 + SEPDataTypeFound = ETrue;
1.160 + break;
1.161 + }
1.162 + }
1.163 + if (!SEPDataTypeFound)
1.164 + {
1.165 + err = KErrNotFound;
1.166 + }
1.167 + }
1.168 + return err;
1.169 + }
1.170 +
1.171 +
1.172 +/**
1.173 +Standard destructor.
1.174 +*/
1.175 +CGAVDPStateMachine::~CGAVDPStateMachine()
1.176 + {
1.177 + Cancel();
1.178 + iBearerSocket.Close();
1.179 + iGavdp.Close();
1.180 + iPotentialSEPs.Close();
1.181 + iUsableSEPs.Close();
1.182 + iSymbianDeviceSEPs.Close();
1.183 + iSEPCapabilities.ResetAndDestroy();
1.184 + iSEPCapabilities.Close();
1.185 + delete iSignallingTransactionTimeout;
1.186 + }
1.187 +
1.188 +
1.189 +/**
1.190 +Function to set the Bluetooth address of the headset.
1.191 +
1.192 +@param aRemoteAddress Bluetooth address of the headset
1.193 +*/
1.194 +void CGAVDPStateMachine::SetBTAddress(const TBTDevAddr& aRemoteAddress)
1.195 + {
1.196 + if (iBTDevAddr != aRemoteAddress)
1.197 + {//must be using a new headet so reset state machine
1.198 + Reset();
1.199 + iBTDevAddr = aRemoteAddress;
1.200 + }
1.201 + }
1.202 +
1.203 +
1.204 +/**
1.205 +Function to returns the current state of the GAVDP state machine.
1.206 +
1.207 +@return the current state of the GAVDP state machine
1.208 +*/
1.209 +TGAVDPState CGAVDPStateMachine::State() const
1.210 + {
1.211 + return iCurrentState ;
1.212 + }
1.213 +
1.214 +
1.215 +/**
1.216 +Internal function to resets the GAVDP state machine to the EGAVDPIdle state
1.217 +Note that if the headset is already connected Reseting
1.218 +will cause a subsequent call to RGavdp.Connect, however
1.219 +if we are already connected this should complete straight away
1.220 +
1.221 +Note we don't close the bearer socket here as we need to ensure
1.222 +this is closed after the RTP streamer is deleted so this is handled by the CA2dpBTHeadsetAudioInterface
1.223 +*/
1.224 +void CGAVDPStateMachine::Reset()
1.225 + {
1.226 + iPotentialSEPs.Reset();
1.227 + iUsableSEPs.Reset();
1.228 + iSEPCapabilities.ResetAndDestroy();
1.229 + iSEPIterator = 0;
1.230 + iSEPCapabilityEntry = 0;
1.231 + iA2dpCodecSettings.Reset();
1.232 + iInitialState = TGAVDPState::EGAVDPIdle;
1.233 + iCurrentState = TGAVDPState::EGAVDPIdle;
1.234 + iNextState = TGAVDPState::EGAVDPIdle;
1.235 + iTargetState = TGAVDPState::EGAVDPIdle;
1.236 + iConfigurationByRemoteHeadsetState.Reset();
1.237 + iHeadsetSEID.Reset();
1.238 + iLocalSEPConfigured = EFalse;
1.239 + iChangeOfSelectedHeadsetSEP = EFalse;
1.240 + iGavdp.Cancel();
1.241 + iSignallingTransactionTimeout->Cancel();
1.242 + }
1.243 +
1.244 +
1.245 +/**
1.246 +Function to move the GAVDP state machine to the state specified in aNewState
1.247 +Not all state changes are allowed, however.
1.248 +Permitted state changes are anystate to ->EGAVDPIdle,EConnectedToGavdp,ESEPsDiscovered
1.249 +which causes a reset.
1.250 +Anything prior to EGAVDPOpen->EGAVDPOpen
1.251 +EGAVDPOpen->EGAVDPStreaming
1.252 +EGAVDPStreaming->EGAVDPOpen
1.253 +
1.254 +When the state change is completed a GAVDPStateChangeComplete callback is
1.255 +made on the MGAVDPStateChangeObserver, which is the CA2dpBTHeadsetAudioInterface
1.256 +
1.257 +@param aNewState The state we wish to go to
1.258 +@return standard SymbianOS error code
1.259 +*/
1.260 +TInt CGAVDPStateMachine::ChangeState(const TGAVDPState& aNewState)
1.261 + {
1.262 + if (iStateChangeInProgress)
1.263 + {//can't change state if a state change is already in progress
1.264 + return KErrNotReady;
1.265 + }
1.266 + if (aNewState.State()<= TGAVDPState::ESEPSelected)
1.267 + {
1.268 + //if the state is ESEPSelected or less then
1.269 + //the assumption is we need to reselect the SEP and in
1.270 + //effect redo the entire initialization prior to selecting the SEP
1.271 + //therefore roll back to EGAVDPIdle and reset.
1.272 + Reset();
1.273 + }
1.274 + else if (aNewState == TGAVDPState::EGAVDPStreaming)
1.275 + {
1.276 + //must be in the EGAVDPOpen state in order to go to EGAVDPStreaming
1.277 + if (iCurrentState != TGAVDPState::EGAVDPOpen)
1.278 + {
1.279 + return KErrNotReady;
1.280 + }
1.281 + }
1.282 +
1.283 + if (aNewState == iCurrentState)
1.284 + {
1.285 + //then we are already in the requested state so don't move to
1.286 + //next state- so just call the RunL and complete
1.287 + iStateChangeInProgress = EFalse;//we're not going to change the state
1.288 + TRequestStatus* stat = &iStatus;
1.289 + if (!IsActive())
1.290 + {
1.291 + User::RequestComplete(stat, KErrNone);
1.292 + SetActive();
1.293 + }
1.294 + }
1.295 + else
1.296 + {//need to move to the next state
1.297 + iInitialState = iCurrentState; //incase we need to wind back if state change fails
1.298 + iTargetState = aNewState;
1.299 + NextState();
1.300 + }
1.301 + return KErrNone;
1.302 + }
1.303 +
1.304 +
1.305 +/**
1.306 +Function to cause a reconfiguration of the SEP. The function determines
1.307 +whether a reconfiguration is required ie becuase the settings have changed.
1.308 +And if so the SEP is reconfigured or a new SEP is selected if the reconfiguration
1.309 +results in a change of SEP ie because the datatype has changed
1.310 +This function makes a GAVDPStateChangeComplete callback on the CA2dpBTHeadsetAudioInterface
1.311 +If the SEP changes because of a change in data type then the iChangeOfSelectedHeadsetSEP
1.312 +flag is set which is used by the state machine to cause the media transport
1.313 +caps to be added to the SEP
1.314 +
1.315 +@param aSettingsHaveChanged set to ETrue if the settings have changed
1.316 +
1.317 +@return SymbianOS error code
1.318 +*/
1.319 +TInt CGAVDPStateMachine::Reconfigure(TBool aSettingsHaveChanged)
1.320 + {
1.321 + //not allowed to reconfigure in the middle of a state change
1.322 + if ((iStateChangeInProgress)||(IsActive()))
1.323 + {
1.324 + return KErrNotReady;
1.325 + }
1.326 +
1.327 + //in order to perform a reconfigure the current state must
1.328 + //be either EConfigured or EGAVDPOpen
1.329 + //reconfiguration by the SymbianOs device in the streaming state is not supported
1.330 + //in this implementation even though it is allowed by the GAVDP profile
1.331 + if ((iCurrentState != TGAVDPState::EConfigured) &&
1.332 + (iCurrentState != TGAVDPState::EGAVDPOpen))
1.333 + {
1.334 + return KErrNotReady;
1.335 + }
1.336 +
1.337 + __ASSERT_DEBUG((iCurrentState == iTargetState), Panic(EGavdpStateMachineBadState));//this should always be true if no state change is in progress
1.338 +
1.339 + iChangeOfSelectedHeadsetSEP = EFalse;
1.340 + if (aSettingsHaveChanged)
1.341 + {//then see if we need to change SEP
1.342 + //data type has changed so we need to choose a different SEP
1.343 + //and configure it
1.344 + //note if no match is found then we go with the exiting
1.345 + //selected SEP
1.346 + for (TUint i=0; i<iUsableSEPs.Count() ; i++)
1.347 + {
1.348 + TUsableSEP sep = iUsableSEPs[i];
1.349 + if (sep.iDataType == iA2dpCodecSettings.HeadsetCodecDataType())
1.350 + {//then we have a match so use this SEP
1.351 + if (sep.iSEID != iHeadsetSEID)
1.352 + {//then this is a different SEP to the one we were already using
1.353 + iHeadsetSEID = sep.iSEID;
1.354 + iLocalSEPConfigured = EFalse;
1.355 + iChangeOfSelectedHeadsetSEP = ETrue;//need to config transport capabilites again if change of SEP
1.356 + //need to change the symbian device SEP as well
1.357 + TBool symbianDeviceSupportsNewSEPDataType(EFalse);
1.358 + for(TUint i = 0; i< iSymbianDeviceSEPs.Count();i++)
1.359 + {
1.360 + if (iSymbianDeviceSEPs[i].iDataType == sep.iDataType)
1.361 + {
1.362 + iSymbianDeviceSEID = iSymbianDeviceSEPs[i].iSEID;
1.363 + symbianDeviceSupportsNewSEPDataType = ETrue;
1.364 + break;
1.365 + }
1.366 + }
1.367 + __ASSERT_DEBUG(symbianDeviceSupportsNewSEPDataType, Panic(EGavdpStateMachineDataTypeMismatch));
1.368 +
1.369 + //the if condition below is totaly unnecesaary since we have already
1.370 + //ASSERTed symbianDeviceSupportsNewSEPDataType, however the ARM 5 compiler
1.371 + //does not seem to recognize code in ASSERT statements so the if statement
1.372 + //supresses an ARM v5 compiler warning
1.373 + if (symbianDeviceSupportsNewSEPDataType)
1.374 + {
1.375 + iBearerSocket.Close(); //if we change headset SEP then the old bearer is no longer valid
1.376 + }
1.377 + }
1.378 + }
1.379 + }
1.380 + }
1.381 +
1.382 +
1.383 +
1.384 + //if a reconfigure is required then we need to reset the current state
1.385 + //to ESEPSelected and reconfigure
1.386 + iInitialState = iCurrentState; //incase we need to wind back if state change fails
1.387 +
1.388 + if ((aSettingsHaveChanged)||(iChangeOfSelectedHeadsetSEP))
1.389 + {
1.390 + iTargetState = iCurrentState; //need to end up in the same state we started at
1.391 + iCurrentState = TGAVDPState::ESEPSelected; //roll back the state machine to ESEPSelected
1.392 + iNextState = iCurrentState;
1.393 + NextState(); //make sure the NextState is EConfigured
1.394 + }
1.395 + else
1.396 + {//go to RunL to make GAVDPStateChangeComplete callback
1.397 + if (!IsActive())
1.398 + {
1.399 + TRequestStatus* stat = &iStatus;
1.400 + User::RequestComplete(stat, KErrNone);
1.401 + SetActive();
1.402 + }
1.403 + }
1.404 + return KErrNone;
1.405 + }
1.406 +
1.407 +
1.408 +/**
1.409 +Advance to Next state
1.410 +*/
1.411 +void CGAVDPStateMachine::NextState()
1.412 + {
1.413 + iStateChangeInProgress = ETrue;
1.414 + TRequestStatus* stat = &iStatus;
1.415 + ++iNextState;
1.416 + if (!IsActive())
1.417 + {
1.418 + User::RequestComplete(stat, KErrNone);
1.419 + SetActive();
1.420 + }
1.421 + }
1.422 +
1.423 +
1.424 +/**
1.425 +Internal function to complete the state change
1.426 +*/
1.427 +void CGAVDPStateMachine::StateChangeComplete()
1.428 + {
1.429 + iCurrentState = iNextState;
1.430 + if (iCurrentState == iTargetState)
1.431 + {
1.432 + iStateChangeInProgress = EFalse;
1.433 + iGAVDPStateChangeObserver.GAVDPStateChangeComplete(iInitialState, KErrNone);
1.434 + }
1.435 + else
1.436 + {//we've completed the internal state change but have not reached the target state
1.437 + NextState();
1.438 + }
1.439 + }
1.440 +
1.441 +
1.442 +/**
1.443 +Function to cancel a state change initialited by the ChangeState function
1.444 +This function is called when the change state is explicitly cancelled by the client
1.445 +*/
1.446 +void CGAVDPStateMachine::CancelChangeState()
1.447 + {
1.448 + //if we call this externally then the reason is KErrCancel
1.449 + //as the state change has been explicitely cancelled
1.450 + CancelChangeState(KErrCancel);
1.451 + }
1.452 +
1.453 +
1.454 +/**
1.455 +Internal function to cancel a state change initiated by the ChangeState function
1.456 +Usually called when an error occurs that would prevent the state change
1.457 +from completing
1.458 +*/
1.459 +void CGAVDPStateMachine::CancelChangeState(TInt aReason)
1.460 + {
1.461 + if (iStateChangeInProgress)
1.462 + {//unwind the request as far as possible
1.463 + switch (iInitialState.State())
1.464 + {
1.465 + case TGAVDPState::EGAVDPIdle:
1.466 + Reset();
1.467 + break;
1.468 + case TGAVDPState::EGAVDPOpen:
1.469 + iGavdp.Cancel();
1.470 + iCurrentState = TGAVDPState::EGAVDPOpen;
1.471 + iNextState = TGAVDPState::EGAVDPOpen;
1.472 + iTargetState = TGAVDPState::EGAVDPOpen;
1.473 + break;
1.474 + case TGAVDPState::EGAVDPStreaming:
1.475 + iGavdp.Cancel();
1.476 + iNextState = TGAVDPState::EGAVDPStreaming;
1.477 + iTargetState = TGAVDPState::EGAVDPStreaming;
1.478 + break;
1.479 + default:
1.480 + Panic(EGavdpStateMachineBadState);
1.481 + break;
1.482 + }
1.483 + }
1.484 + if (IsActive())
1.485 + {
1.486 + Cancel();
1.487 + }
1.488 + iStateChangeInProgress = EFalse;
1.489 + iGAVDPStateChangeObserver.GAVDPStateChangeComplete(iInitialState, aReason);
1.490 + }
1.491 +
1.492 +
1.493 +/**
1.494 +Internal function to initiate the connection to the headset
1.495 +*/
1.496 +void CGAVDPStateMachine::ConnectToGAVDP()
1.497 + {
1.498 + iGavdp.Connect(iBTDevAddr);
1.499 + }
1.500 +
1.501 +
1.502 +/**
1.503 +MGavdpUser callback to indicate the headset is connected
1.504 +
1.505 +@see MGavdpUser
1.506 +*/
1.507 +void CGAVDPStateMachine::GAVDP_ConnectConfirm(const TBTDevAddr& aDevice)
1.508 + {
1.509 + if (!iStateChangeInProgress)
1.510 + {//connect initiated by remote headset so we'll accept the address
1.511 + iBTDevAddr = aDevice;
1.512 + iCurrentState == TGAVDPState::EConnectedToGavdp;
1.513 + }
1.514 + else if (iBTDevAddr == aDevice)
1.515 + {//if a state change is in progress then we have already set the bt
1.516 + //address so the above should be true
1.517 + //if its not we'll treat the connect as a spurious connect and ignore
1.518 + if (iCurrentState.State() == TGAVDPState::EGAVDPIdle)
1.519 + {//if the above isn't true then must be a spurious connect from the headset
1.520 + //now connected to the device in question
1.521 + StateChangeComplete();
1.522 + }
1.523 + }
1.524 + }
1.525 +
1.526 +
1.527 +/**
1.528 +MGavdpUser callback to indicate the headset has suspended streaming
1.529 +Makes a GAVDPStateMachineStreamSuspendedByRemoteHeadset MGAVDPStateChangeObserver
1.530 +callback on the CA2dpBTHeadsetAudioInterface
1.531 +
1.532 +@see MGavdpUser
1.533 +*/
1.534 +TInt CGAVDPStateMachine::GAVDP_SuspendIndication(TSEID aSEID)
1.535 + {
1.536 + TInt err = KErrNone;
1.537 + //first check the callback is for the symbian device SEP we are using to
1.538 + //send data to the a2dp headset - incase the Symbian device has more than one SEP
1.539 + if (aSEID == iSymbianDeviceSEID)
1.540 + {
1.541 + __ASSERT_DEBUG((iCurrentState.State() == TGAVDPState::EGAVDPStreaming), Panic(EGavdpStateMachineUnexpectedCallback));
1.542 +
1.543 + //need to stop the RTP streamer from sending more packets to the headset
1.544 + iGAVDPStateChangeObserver.GAVDPStateMachineStreamSuspendedByRemoteHeadset();
1.545 +
1.546 + iCurrentState = TGAVDPState::EGAVDPSuspended;
1.547 + }
1.548 + else
1.549 + {
1.550 + err = ConvertToSymbianError::AvdtpError(EAvdtpBadACPSEID);
1.551 + }
1.552 + return err;
1.553 + }
1.554 +
1.555 +
1.556 +/**
1.557 +MGavdpUser callback to indicate the headset wished to configure the SymbianDevice
1.558 +
1.559 +@see MGavdpUser
1.560 +*/
1.561 +void CGAVDPStateMachine::GAVDP_ConfigurationStartIndication(TSEID aLocalSEID, TSEID aRemoteSEID)
1.562 + {
1.563 + //first check the callback is for the symbian device SEP we are using to
1.564 + //send data to the a2dp headset - incase the Symbian device has more than one SEP
1.565 + if (aLocalSEID == iSymbianDeviceSEID)
1.566 + {
1.567 + __ASSERT_DEBUG((iCurrentState.State() != TGAVDPState::EGAVDPStreaming), Panic(EGavdpStateMachineUnexpectedCallback));
1.568 + __ASSERT_DEBUG(iConfigurationByRemoteHeadsetState.State() == TConfigurationByRemoteHeadsetState::ENotBeingConfiguredByRemoteHeadset, Panic(EGavdpStateMachineBadConfigByRemoteHeadsetState));
1.569 +
1.570 + //cancel any current state changes - config is being driven by headset
1.571 + Cancel();
1.572 + iGavdp.Cancel();
1.573 + //no timeouts are required as if the headset goes down ie does not
1.574 + //result in the expected GAVDP_ConfigurationIndication callbacks a GAVDP_Error
1.575 + //callback occurs.
1.576 +
1.577 + iConfigurationByRemoteHeadsetState = TConfigurationByRemoteHeadsetState::ERemoteHeadsetConfigurationStart;
1.578 +
1.579 + //we just store the remote SEP for now
1.580 + iConfigurationByRemoteHeadsetState.SetSEPRequestedByRemoteHeadset(aRemoteSEID);
1.581 + }
1.582 + // else we can't return an error if the aLocalSEID is not for the SymbianOS device
1.583 + }
1.584 +
1.585 +
1.586 +/**
1.587 +MGavdpUser callback to request the SymbianOS device to take the configuration passed in aCapability
1.588 +Only SBC reconfigurations by the remote headset are supported, sample rate changes
1.589 +are not supported, changes in the number of channels are not suported
1.590 +if the capability is TSBCCodecCapabilities then the function checks that the values
1.591 +requested can be accepted.
1.592 +
1.593 +@see MGavdpUser
1.594 +*/
1.595 +TInt CGAVDPStateMachine::GAVDP_ConfigurationIndication(TAvdtpServiceCapability* aCapability)
1.596 + {
1.597 + //the underlying GAVDP/AVDTP code should ensure that this
1.598 + //callback from GAVDP never occurs once the headset has been configured
1.599 + __ASSERT_DEBUG((iCurrentState.State() != TGAVDPState::EGAVDPStreaming), Panic(EGavdpStateMachineUnexpectedCallback));
1.600 + __ASSERT_DEBUG(iConfigurationByRemoteHeadsetState.State() == TConfigurationByRemoteHeadsetState::ERemoteHeadsetConfigurationStart, Panic(EGavdpStateMachineBadConfigByRemoteHeadsetState));
1.601 +
1.602 + TInt err = KErrNone;
1.603 +
1.604 + switch(aCapability->Category())
1.605 + {
1.606 + case EServiceCategoryMediaTransport:
1.607 + {
1.608 + TAvdtpMediaTransportCapabilities* mediaTransportCaps = static_cast<TAvdtpMediaTransportCapabilities*>(aCapability);
1.609 + iConfigurationByRemoteHeadsetState.SetTransportCapsRequestedByRemoteHeadset(mediaTransportCaps);
1.610 + }
1.611 + break;
1.612 + case EServiceCategoryMediaCodec:
1.613 + {
1.614 + TAvdtpMediaCodecCapabilities* codecCaps = static_cast<TAvdtpMediaCodecCapabilities*>(aCapability);
1.615 + if (codecCaps->MediaType() != EAvdtpMediaTypeAudio)
1.616 + {
1.617 + err = ConvertToSymbianError::A2dpError(EA2dpNotSupportedCodec);
1.618 + }
1.619 + //we're only going to allow a reconfiguration for SBC
1.620 + if ((codecCaps->MediaCodecType() == EAudioCodecSBC) && (iA2dpCodecSettings.HeadsetCodecDataType() == KMMFFourCCCodeSBC))
1.621 + {
1.622 + TSBCCodecCapabilities* sbcCodecCapabilities = static_cast<TSBCCodecCapabilities*>(codecCaps);
1.623 + TSBCSamplingFrequencyBitmask samplingFreqBitMask = sbcCodecCapabilities->SamplingFrequencies();
1.624 +
1.625 + //if the headset has already been configured then we don't allow a change
1.626 + //of sampling frequency. This is because once the DevSound has been configured
1.627 + //with a sampling frequency after the DevSound is initialized and hence
1.628 + //the a2dpheadsetif is initialized, it is no longer possible to change the sample frequency
1.629 + TBool headsetAlreadyConfigured(EFalse);
1.630 + if ((iCurrentState.State() == TGAVDPState::EGAVDPOpen) ||
1.631 + (iCurrentState.State() == TGAVDPState::EGAVDPSuspended))
1.632 + {
1.633 + headsetAlreadyConfigured = ETrue;
1.634 + }
1.635 + //only one bit of the sampling frequency mask should be set
1.636 + //note we're using switch statements rather than if then else
1.637 + //it makes it easier to pick up the case where we have an invalid
1.638 + //value or more than one value has been set in the bit mask
1.639 + switch (samplingFreqBitMask)
1.640 + {
1.641 + case E16kHz:
1.642 + if ((headsetAlreadyConfigured) && (iA2dpCodecSettings.SampleRate() != 16000))
1.643 + {
1.644 + err = ConvertToSymbianError::A2dpError(EA2dpNotSupportedSamplingFrequency);
1.645 + }
1.646 + break;
1.647 + case E32kHz:
1.648 + if ((headsetAlreadyConfigured) && (iA2dpCodecSettings.SampleRate() != 32000))
1.649 + {
1.650 + err = ConvertToSymbianError::A2dpError(EA2dpNotSupportedSamplingFrequency);
1.651 + }
1.652 + break;
1.653 + case E44100Hz:
1.654 + if ((headsetAlreadyConfigured) && (iA2dpCodecSettings.SampleRate() != 44100))
1.655 + {
1.656 + err = ConvertToSymbianError::A2dpError(EA2dpNotSupportedSamplingFrequency);
1.657 + }
1.658 + break;
1.659 + case E48kHz:
1.660 + if ((headsetAlreadyConfigured) && (iA2dpCodecSettings.SampleRate() != 48000))
1.661 + {
1.662 + err = ConvertToSymbianError::A2dpError(EA2dpNotSupportedSamplingFrequency);
1.663 + }
1.664 + break;
1.665 + default:
1.666 + err = ConvertToSymbianError::A2dpError(EA2dpInvalidSamplingFrequency);
1.667 + break;
1.668 + }
1.669 + TSBCChannelModeBitmask channelModeBitMask = sbcCodecCapabilities->ChannelModes();
1.670 +
1.671 + //if the headset has already been configured then we don't allow a change
1.672 + //of channels. This is because once the DevSound has been configured
1.673 + //with a sampling frequency after the DevSound is initialized and hence
1.674 + //the a2dpheadsetif is initialized, it is no longer possible to change the number of channels
1.675 + switch (channelModeBitMask)
1.676 + {
1.677 + case EMono:
1.678 + if ((headsetAlreadyConfigured) && (iA2dpCodecSettings.Channels() != EMMFMono))
1.679 + {
1.680 + err = ConvertToSymbianError::A2dpError(EA2dpNotSupportedChannelMode);
1.681 + }
1.682 + break;
1.683 + case EDualChannel: //we don't support dual channel
1.684 + err = ConvertToSymbianError::A2dpError(EA2dpNotSupportedChannelMode);
1.685 + break;
1.686 + case EStereo:
1.687 + if ((headsetAlreadyConfigured) && (iA2dpCodecSettings.Channels() != EMMFStereo))
1.688 + {
1.689 + err = ConvertToSymbianError::A2dpError(EA2dpNotSupportedChannelMode);
1.690 + }
1.691 + break;
1.692 + case EJointStereo:
1.693 + if ((headsetAlreadyConfigured) && (iA2dpCodecSettings.Channels() != EMMFStereo))
1.694 + {
1.695 + err = ConvertToSymbianError::A2dpError(EA2dpNotSupportedChannelMode);
1.696 + }
1.697 + break;
1.698 + default:
1.699 + err = ConvertToSymbianError::A2dpError(EA2dpInvalidChannelMode);
1.700 + break;
1.701 + }
1.702 +
1.703 + TSBCBlockLengthBitmask blockLengthBitMask = sbcCodecCapabilities->BlockLengths();
1.704 +
1.705 + switch (blockLengthBitMask)
1.706 + {
1.707 + case EBlockLenFour:
1.708 + break;
1.709 + case EBlockLenEight:
1.710 + break;
1.711 + case EBlockLenTwelve:
1.712 + break;
1.713 + case EBlockLenSixteen:
1.714 + break;
1.715 + default:
1.716 + err = ConvertToSymbianError::A2dpError(EA2dpInvalidBlockLength);
1.717 + break;
1.718 + }
1.719 +
1.720 + TSBCSubbandsBitmask subbandsBitMask = sbcCodecCapabilities->Subbands();
1.721 +
1.722 + TUint subbands = 0;
1.723 + switch (subbandsBitMask)
1.724 + {
1.725 + case EFourSubbands:
1.726 + subbands = 4;
1.727 + break;
1.728 + case EEightSubbands:
1.729 + subbands = 8;
1.730 + break;
1.731 + default:
1.732 + err = ConvertToSymbianError::A2dpError(EA2dpInvalidSubbands);
1.733 + break;
1.734 + }
1.735 +
1.736 + TSBCAllocationMethodBitmask allocationMethodBitMask = sbcCodecCapabilities->AllocationMethods();
1.737 +
1.738 + switch (allocationMethodBitMask)
1.739 + {
1.740 + case ELoudness:
1.741 + break;
1.742 + case ESNR:
1.743 + break;
1.744 + default:
1.745 + err = ConvertToSymbianError::A2dpError(EA2dpInvalidAllocationMethod);
1.746 + break;
1.747 + }
1.748 +
1.749 + TInt bitPoolValue = sbcCodecCapabilities->MinBitpoolValue();
1.750 +
1.751 + if (bitPoolValue < KMinBitPoolValue)
1.752 + {
1.753 + err = ConvertToSymbianError::A2dpError(EA2dpInvalidMinimumBitPoolValue);
1.754 + }
1.755 +
1.756 + bitPoolValue = sbcCodecCapabilities->MaxBitpoolValue();
1.757 +
1.758 + //The bitpool value must be in the range of 2-250 and must not exceed
1.759 + // 16*numberOfSubbands*channels
1.760 + if ((bitPoolValue > KMaxBitPoolValue)||(bitPoolValue > (16*subbands*iA2dpCodecSettings.Channels())))
1.761 + {
1.762 + err = ConvertToSymbianError::A2dpError(EA2dpInvalidMaximumBitPoolValue);
1.763 + }
1.764 + if (!err)
1.765 + {//note ownership of codecCaps is transferred
1.766 + iConfigurationByRemoteHeadsetState.SetCodecConfigRequestedByRemoteHeadset(codecCaps);
1.767 + }
1.768 + }//if (codecCaps->MediaCodecType() == EAudioCodecSBC) && (iA2dpCodecSettings.HeadsetCodecDataType() == KMMFFourCCodeSBC))
1.769 + else
1.770 + {//only support SBC for now
1.771 + err = ConvertToSymbianError::A2dpError(EA2dpNotSupportedCodec);
1.772 + }
1.773 + }
1.774 + break; //case EServiceCategoryMediaCodec:
1.775 + default: // switch(aCapability->Category())
1.776 + err = KErrNotSupported;
1.777 + break;
1.778 + }
1.779 +
1.780 + if (err)
1.781 + {
1.782 + iConfigurationByRemoteHeadsetState = TConfigurationByRemoteHeadsetState::ERemoteHeadsetConfigurationFailed;
1.783 + if ((iCurrentState.State() < TGAVDPState::EConfigured) && (iCurrentState.State() != TGAVDPState::EGAVDPIdle))
1.784 + {//we only abort if the remote headset has not been configured
1.785 + //need to abort using SEID of remote headset - this resets config at remote headset
1.786 + Cancel(); //probably not necessary - but just in case
1.787 + iGavdp.AbortStream(iConfigurationByRemoteHeadsetState.SEPRequestedByRemoteHeadset());
1.788 + }
1.789 + //else
1.790 + //config is a reconfig in suspend streams
1.791 + //wait on a Start_Indication if the headset is ok with the existing config
1.792 + //or an Abort_Indication if the headset is not
1.793 + }
1.794 +
1.795 + return err;
1.796 + }
1.797 +
1.798 +
1.799 +/*
1.800 +MGavdpUser callback to indicate to the SymbianOS device that all the GAVDP_ConfigurationIndications
1.801 +have been sent.
1.802 +This callback should only occur if there have been no errored GAVDP_ConfigurationIndications
1.803 +
1.804 +@see MGavdpUser
1.805 +*/
1.806 +TInt CGAVDPStateMachine::GAVDP_ConfigurationEndIndication()
1.807 + {
1.808 + //the underlying GAVDP/AVDTP code should ensure that this
1.809 + //callback from GAVDP never occurs once the headset has been configured
1.810 + __ASSERT_DEBUG((iCurrentState.State() != TGAVDPState::EGAVDPStreaming), Panic(EGavdpStateMachineUnexpectedCallback));
1.811 + __ASSERT_DEBUG(iConfigurationByRemoteHeadsetState.State() == TConfigurationByRemoteHeadsetState::ERemoteHeadsetConfigurationStart, Panic(EGavdpStateMachineBadConfigByRemoteHeadsetState));
1.812 +
1.813 + TInt err = KErrNone;
1.814 +
1.815 + TAvdtpMediaCodecCapabilities* configRequestedByRemoteHeadset = iConfigurationByRemoteHeadsetState.CodecConfigRequestedByRemoteHeadset();
1.816 + if (configRequestedByRemoteHeadset)
1.817 + {
1.818 + __ASSERT_DEBUG(iConfigurationByRemoteHeadsetState.SEPRequestedByRemoteHeadset().IsValid(), Panic(EGavdpStateMachineBadConfigByRemoteHeadsetState));
1.819 +
1.820 + //the headset settings have been accepted so use the headset settings
1.821 + //the only usable SEP shall be the once specified by the headset
1.822 + //for now this will always be SBC
1.823 + TUsableSEP SEP;
1.824 + SEP.iSEID = iConfigurationByRemoteHeadsetState.SEPRequestedByRemoteHeadset();
1.825 + TFourCC dataTypeSupport;
1.826 + switch (configRequestedByRemoteHeadset->MediaCodecType())
1.827 + {
1.828 + case EAudioCodecSBC:
1.829 + dataTypeSupport.Set(KMMFFourCCCodeSBC);
1.830 + break;
1.831 + case EAudioCodecMPEG12Audio:
1.832 + dataTypeSupport.Set(KMMFFourCCCodeMP3);
1.833 + break;
1.834 + case EAudioCodecMPEG24AAC:
1.835 + dataTypeSupport.Set(KMMFFourCCCodeAAC);
1.836 + break;
1.837 + case EAudioCodecATRAC:
1.838 + dataTypeSupport.Set(KMMFFourCCCodeATRAC3);
1.839 + break;
1.840 + default://should never get here
1.841 + Panic(EGavdpStateMachineBadConfigByRemoteHeadsetState);
1.842 + break;
1.843 + }
1.844 + SEP.iDataType.Set(dataTypeSupport);
1.845 + iUsableSEPs.Reset();
1.846 + err = iUsableSEPs.Append(SEP);
1.847 +
1.848 + //the only service capabilities are codec caps provided by the headset and transport
1.849 + if (!(iA2dpCodecSettings.UpdateRemoteCodecConfiguration(*configRequestedByRemoteHeadset)))
1.850 + {
1.851 + err = KErrNoMemory;
1.852 + }
1.853 + if (!err)
1.854 + {
1.855 + iSEPCapabilities.ResetAndDestroy();
1.856 + err = iSEPCapabilities.Append(iConfigurationByRemoteHeadsetState.TransportCapsRequestedByRemoteHeadset());
1.857 + if (!err)
1.858 + {
1.859 + err = iSEPCapabilities.Append(iConfigurationByRemoteHeadsetState.CodecConfigRequestedByRemoteHeadset());
1.860 + }
1.861 + }
1.862 + }// if (codecCaps)
1.863 +
1.864 + if (!err)
1.865 + {
1.866 + if ((iStateChangeInProgress) && (iInitialState.State() == TGAVDPState::EGAVDPIdle))
1.867 + {//the headset configured us during an a2dpheadsetif Initialize()
1.868 + //we're now configured so now wait for GAVDP_Bearer ready
1.869 + iCurrentState == TGAVDPState::EConfigured;
1.870 + }
1.871 + else if (iCurrentState == TGAVDPState::EGAVDPSuspended)
1.872 + {
1.873 + //we have reconfigured so the SBC codec needs reconfiguring
1.874 + err = iGAVDPStateChangeObserver.GAVDPStateMachineReconfigureByRemoteHeadset();
1.875 + }
1.876 + }
1.877 + if (err)
1.878 + {
1.879 + if ((iCurrentState.State() < TGAVDPState::EConfigured) && (iCurrentState.State() != TGAVDPState::EGAVDPIdle))
1.880 + {//we only abort if the remote headset has not been configured
1.881 + //need to abort using SEID of remote headset - this resets config at remote headset
1.882 + Cancel(); //probably not necessary - but just in case
1.883 + iGavdp.AbortStream(iConfigurationByRemoteHeadsetState.SEPRequestedByRemoteHeadset());
1.884 + }
1.885 + }
1.886 + //else
1.887 + //config is a reconfig in suspend streams
1.888 + //wait on a Start_Indication if the headset is ok with the existing config
1.889 + //or an Abort_Indication if the headset is not
1.890 + iConfigurationByRemoteHeadsetState = TConfigurationByRemoteHeadsetState::ERemoteHeadsetConfigurationEnd;
1.891 + return err;
1.892 + }
1.893 +
1.894 +
1.895 +/**
1.896 +MGavdpUser callback to indicate to the SymbianOS device that it has started streaming
1.897 +There are two circumstances we can get a start indication
1.898 +1) The headset can request to start the streams itself once we are in the open state
1.899 +2) The headset can request a restart after suspending the streams eg to perform a reconfiguration
1.900 +
1.901 +@see MGavdpUser
1.902 +*/
1.903 +TInt CGAVDPStateMachine::GAVDP_StartIndication(TSEID aSEID)
1.904 + {
1.905 + __ASSERT_DEBUG((iCurrentState.State() == TGAVDPState::EGAVDPOpen) ||
1.906 + (iCurrentState.State() == TGAVDPState::EGAVDPSuspended), Panic(EGavdpStateMachineUnexpectedCallback));
1.907 + __ASSERT_DEBUG((iConfigurationByRemoteHeadsetState.State() != TConfigurationByRemoteHeadsetState::ERemoteHeadsetConfigurationStart),Panic(EGavdpStateMachineBadConfigByRemoteHeadsetState));
1.908 + //first check the callback is for the symbian device SEP we are using to
1.909 + //send data to the a2dp headset - incase the Symbian device has more than one SEP
1.910 + if (aSEID == iSymbianDeviceSEID)
1.911 + {
1.912 + if (iCurrentState.State() == TGAVDPState::EGAVDPOpen)
1.913 + {
1.914 + if (iStateChangeInProgress)
1.915 + {
1.916 + if (iTargetState.State() == TGAVDPState::EGAVDPStreaming)
1.917 + {
1.918 + //a EGAVDPOpen->Streaming transistion
1.919 + //which has been completed for us by the headset
1.920 + Cancel();
1.921 + iGavdp.Cancel();
1.922 + iCurrentState = TGAVDPState::EGAVDPStreaming;
1.923 + StateChangeComplete();
1.924 + }
1.925 + //else only other state change would be open->idle
1.926 + //this is unlikely/impossible if we get a GAVDP_StartIndication
1.927 + //do nothing
1.928 + }
1.929 + else
1.930 + {
1.931 + //note if no state change is in progress then the headset itself
1.932 + //has put itself in the streaming state
1.933 + //normally we put the headset in the streaming state
1.934 + //when we call OpenDevice() on the a2dpaudioif
1.935 + //but if the headset does this then it is no longer possible
1.936 + //for the client to change the audio settings
1.937 + iCurrentState = TGAVDPState::EGAVDPStreaming;
1.938 + }
1.939 + }//(iCurrentState.State() == TGAVDPState::EGAVDPOpen)
1.940 + else if (iCurrentState.State() == TGAVDPState::EGAVDPSuspended)
1.941 + {//most probably restarting after a reconfigure
1.942 + iCurrentState = TGAVDPState::EGAVDPStreaming;
1.943 + iGAVDPStateChangeObserver.GAVDPStateMachineStreamResumedByRemoteHeadset();
1.944 + }
1.945 + }//if (aSEID == iSymbianDeviceSEID)
1.946 + return KErrNone;
1.947 + }
1.948 +
1.949 +
1.950 +/**
1.951 +MGavdpUser callback to indicate to the SymbianOS device that the request to abort the headset
1.952 +which means it is not configured has completed
1.953 +Can request an abort stream if headset configuration fails
1.954 +
1.955 +@see MGavdpUser
1.956 +*/
1.957 +void CGAVDPStateMachine::GAVDP_AbortStreamConfirm()
1.958 + {
1.959 + //if abort stream was caused by aborting the headset in response
1.960 + //to a headset configuration in GAVDP_ConfigurationIndication
1.961 + //then restart state machine from EConnectedToGavdp
1.962 + if (iConfigurationByRemoteHeadsetState.State() == TConfigurationByRemoteHeadsetState::ERemoteHeadsetConfigurationFailed)
1.963 + {//then the abort was caused an aborted configuration from the headset
1.964 + __ASSERT_DEBUG((iCurrentState.State() < TGAVDPState::EConfigured), Panic(EGavdpStateMachineUnexpectedCallback));
1.965 +
1.966 + //since we only aborted if the headset was not yet configured
1.967 + //there must be a state change in progress and since we cancelled
1.968 + //the GAVDPStateMachine should not be active
1.969 + __ASSERT_DEBUG((iStateChangeInProgress) && (!IsActive()), Panic(EGavdpStateMachineBadConfigByRemoteHeadsetState));
1.970 +
1.971 + iConfigurationByRemoteHeadsetState.Reset();
1.972 + //just to make extra sure we'll rediscover the SEPs
1.973 + iPotentialSEPs.Reset();
1.974 + iUsableSEPs.Reset();
1.975 + iSEPCapabilities.ResetAndDestroy();
1.976 + iCurrentState = TGAVDPState::EConnectedToGavdp;
1.977 + iNextState = TGAVDPState::EConnectedToGavdp;
1.978 + iConfigurationByRemoteHeadsetState.Reset();
1.979 + iA2dpCodecSettings.Reset();
1.980 + iHeadsetSEID.Reset();
1.981 + iBearerSocket.Close();
1.982 + iLocalSEPConfigured = EFalse;
1.983 + iChangeOfSelectedHeadsetSEP = EFalse;
1.984 + iSignallingTransactionTimeout->Cancel();
1.985 + NextState();
1.986 + }
1.987 + iConfigurationByRemoteHeadsetState.Reset();
1.988 + }
1.989 +
1.990 +
1.991 +/**
1.992 +MGavdpUser callback to indicate to the SymbianOS device that the headset has aborted
1.993 +ie it can no longer be regarded as configured
1.994 +This makes a GAVDPStateMachineEvent MGAVDPStateChangeObserver callback on the CA2dpBTHeadsetAudioInterface
1.995 +(which inturn will cause a Reset on the GAVDP state machine)
1.996 +
1.997 +@see MGavdpUser
1.998 +*/
1.999 +void CGAVDPStateMachine::GAVDP_AbortIndication(TSEID aSEID)
1.1000 + {
1.1001 + //first check the callback is for the symbian device SEP we are using to
1.1002 + //send data to the a2dp headset - incase the Symbian device has more than one SEP
1.1003 + if (aSEID == iSymbianDeviceSEID)
1.1004 + {
1.1005 + if (iStateChangeInProgress)
1.1006 + {
1.1007 + CancelChangeState(KErrAbort);
1.1008 + }
1.1009 + else
1.1010 + {
1.1011 + iGAVDPStateChangeObserver.GAVDPStateMachineEvent(KErrAbort);
1.1012 + }
1.1013 + }
1.1014 + //else not much we can do it aSEID isn't the Symbian device ID
1.1015 + iConfigurationByRemoteHeadsetState.Reset();
1.1016 + }
1.1017 +
1.1018 +
1.1019 +/**
1.1020 +Internal function to initiate the discovery of the headset SEPs
1.1021 +Note that the SEP discovery does not have a built in timeout
1.1022 +so the GAVDP_SEPDiscovered callback must occur withing the GAVDP callback timeout 30s
1.1023 +or the state change will be cancelled with KErrTimedOut
1.1024 +*/
1.1025 +void CGAVDPStateMachine::DiscoverRemoteSEPs()
1.1026 + {
1.1027 + iPotentialSEPs.Reset();
1.1028 + iGavdp.DiscoverRemoteSEPs();
1.1029 + iSignallingTransactionTimeout->StartTimer(TTimeIntervalMicroSeconds32(KGAVDPCallbackTimeout));
1.1030 + }
1.1031 +
1.1032 +
1.1033 +/**
1.1034 +MGavdpUser callback in response to DiscoverRemoteSEPs
1.1035 +
1.1036 +@see MGavdpUser
1.1037 +*/
1.1038 +void CGAVDPStateMachine::GAVDP_SEPDiscovered(const TAvdtpSEPInfo& aSEP)
1.1039 + {
1.1040 + //check whether the SEP is suitable for connection
1.1041 + if ((!aSEP.InUse()) && (aSEP.MediaType() == EAvdtpMediaTypeAudio) && (aSEP.IsSink()))
1.1042 + {//the SEP is a potentialy suitable for connection
1.1043 + //so add to list of potential SEPs
1.1044 + TInt err = iPotentialSEPs.Append(aSEP.SEID());
1.1045 + if (err)
1.1046 + {
1.1047 + CancelChangeState(err);
1.1048 + }
1.1049 + }
1.1050 + //else SEP is not suitable so ignore it
1.1051 + }
1.1052 +
1.1053 +
1.1054 +/**
1.1055 +MGavdpUser callback
1.1056 +
1.1057 +@see MGavdpUser
1.1058 +*/
1.1059 +void CGAVDPStateMachine::GAVDP_SEPDiscoveryComplete()
1.1060 + {
1.1061 + iSignallingTransactionTimeout->Cancel();
1.1062 + if (iPotentialSEPs.Count())
1.1063 + {//we have at least one potential SEP
1.1064 + StateChangeComplete();
1.1065 + }
1.1066 + else
1.1067 + {//no potential SEPs were found so cannot proceed any further
1.1068 + CancelChangeState(KErrCouldNotConnect);
1.1069 + }
1.1070 + }
1.1071 +
1.1072 +
1.1073 +/**
1.1074 +Internal function to get the capability of an individual SEP
1.1075 +*/
1.1076 +void CGAVDPStateMachine::GetRemoteSEPCapability()
1.1077 + {
1.1078 + TAvdtpServiceCategories serviceCategories;
1.1079 + serviceCategories.SetCapability(EServiceCategoryMediaTransport);
1.1080 + serviceCategories.SetCapability(EServiceCategoryMediaCodec);
1.1081 + TSEID SEPtoGetCapabilityOf = iPotentialSEPs[iSEPIterator];
1.1082 + iGavdp.GetRemoteSEPCapabilities(SEPtoGetCapabilityOf, serviceCategories);
1.1083 + iSignallingTransactionTimeout->StartTimer(TTimeIntervalMicroSeconds32(KGAVDPCallbackTimeout));
1.1084 + }
1.1085 +
1.1086 +
1.1087 +/**
1.1088 +Internal function to iterate through the list of potential SEPs and asking
1.1089 +for the capabilites of each one.
1.1090 +*/
1.1091 +void CGAVDPStateMachine::GetRemoteSEPCapabilities()
1.1092 + {
1.1093 + iSEPCapabilities.ResetAndDestroy(); //clear what's already there
1.1094 + iUsableSEPs.Reset();
1.1095 + iSEPIterator = 0;
1.1096 + iSEPCapabilityEntry = 0;
1.1097 + //go and get the capability of the first SEP in the list of potential SEPs
1.1098 + //the GAVDP_SEPCapabilityComplete() callback will cause the next potential
1.1099 + //SEP capability to be obtained.
1.1100 + GetRemoteSEPCapability();
1.1101 + }
1.1102 +
1.1103 +
1.1104 +/**
1.1105 +MGavdpUser callback in response to GetRemoteSEPCapabilities
1.1106 +
1.1107 +@see MGavdpUser
1.1108 +*/
1.1109 +void CGAVDPStateMachine::GAVDP_SEPCapability(TAvdtpServiceCapability* aCapability)
1.1110 + {
1.1111 + // we own cap, stash it in the iSEPCapabilities array for owning and later use
1.1112 + TInt err = iSEPCapabilities.Append(aCapability);
1.1113 + if (err)
1.1114 + {
1.1115 + CancelChangeState(err);
1.1116 + }
1.1117 + }
1.1118 +
1.1119 +
1.1120 +/**
1.1121 +MGavdpUser callback in response to GetRemoteSEPCapabilities when all the
1.1122 +GAVDP_SEPCapability callbacks have been made for an individual SEP
1.1123 +
1.1124 +The function iterates through the SEP capabilites looking for transport and media codec support
1.1125 +and if so the SEP is added to the list of usableSEPs.
1.1126 +
1.1127 +@see MGavdpUser
1.1128 +*/
1.1129 +void CGAVDPStateMachine::GAVDP_SEPCapabilityComplete()
1.1130 + {
1.1131 + TInt err = KErrNone;
1.1132 + iSignallingTransactionTimeout->Cancel();
1.1133 + //iterate through the capabilities
1.1134 + TAvdtpServiceCapability* avdtpServiceCapability;
1.1135 + TBool mediaTransport(EFalse);
1.1136 + TBool audioSupport(EFalse);
1.1137 + TFourCC dataTypeSupport; //note we are assuming here that each SEP only has one codec capability
1.1138 + TUint i = 0;
1.1139 + //iterate through the capabilities
1.1140 + //looking for media transport and codec support
1.1141 + for (;iSEPCapabilityEntry < iSEPCapabilities.Count() ; iSEPCapabilityEntry++)
1.1142 + {
1.1143 + avdtpServiceCapability = iSEPCapabilities[iSEPCapabilityEntry];
1.1144 + switch (avdtpServiceCapability->Category())
1.1145 + {
1.1146 + case EServiceCategoryMediaTransport:
1.1147 + mediaTransport = ETrue;
1.1148 + break;
1.1149 + case EServiceCategoryMediaCodec:
1.1150 + {
1.1151 + TAvdtpMediaCodecCapabilities* codecCaps = static_cast<TAvdtpMediaCodecCapabilities*>(avdtpServiceCapability);
1.1152 + if (codecCaps->MediaType() == EAvdtpMediaTypeAudio)
1.1153 + {
1.1154 + audioSupport = ETrue;
1.1155 + }
1.1156 + switch (codecCaps->MediaCodecType())
1.1157 + {
1.1158 + case EAudioCodecSBC:
1.1159 + dataTypeSupport.Set(KMMFFourCCCodeSBC);
1.1160 + break;
1.1161 + case EAudioCodecMPEG12Audio:
1.1162 + dataTypeSupport.Set(KMMFFourCCCodeMP3);
1.1163 + break;
1.1164 + case EAudioCodecMPEG24AAC:
1.1165 + dataTypeSupport.Set(KMMFFourCCCodeAAC);
1.1166 + break;
1.1167 + case EAudioCodecATRAC:
1.1168 + dataTypeSupport.Set(KMMFFourCCCodeATRAC3);
1.1169 + break;
1.1170 + default:
1.1171 + //the datatype is an unsupported datatype
1.1172 + //so set to NULL to show we can't use it
1.1173 + dataTypeSupport.Set(KMMFFourCCCodeNULL);
1.1174 + break;
1.1175 + }
1.1176 + }
1.1177 + }//switch (avdtpServiceCapability->Category())
1.1178 + }// for (TUint i=0; i++; i<iSEPCapabilities.Count())
1.1179 + //check if the capabilities indicate that the SEP is usable
1.1180 + //for audio transport
1.1181 + if ((mediaTransport) && (audioSupport) &&
1.1182 + (dataTypeSupport != KMMFFourCCCodeNULL))
1.1183 + {//then we can use this SEP to stream audio to the headset
1.1184 + // however we ie the Symbian device must
1.1185 + //also be able to support the data type
1.1186 + //before we can add it to the list of usable SEPs
1.1187 + TBool symbianDeviceSupportsDataType(EFalse);
1.1188 + for(TUint i = 0; i< iSymbianDeviceSEPs.Count();i++)
1.1189 + {
1.1190 + if (iSymbianDeviceSEPs[i].iDataType == dataTypeSupport)
1.1191 + {
1.1192 + symbianDeviceSupportsDataType = ETrue;
1.1193 + break;
1.1194 + }
1.1195 + }
1.1196 + if (symbianDeviceSupportsDataType)
1.1197 + {
1.1198 + TUsableSEP usableSEP;
1.1199 + usableSEP.iSEID = iPotentialSEPs[iSEPIterator];
1.1200 + usableSEP.iDataType.Set(dataTypeSupport);
1.1201 + err = iUsableSEPs.Append(usableSEP);
1.1202 + if (err)
1.1203 + {
1.1204 + CancelChangeState(err);
1.1205 + }
1.1206 + }
1.1207 + }
1.1208 + if (!err)
1.1209 + {
1.1210 + //check if we have finished going through our list of potential SEPs
1.1211 + //that we need to find the capabilities of
1.1212 + iSEPIterator++;
1.1213 + if (iSEPIterator >= iPotentialSEPs.Count())
1.1214 + {//then we have finished getting all the capabilities
1.1215 + //so lets choose a SEP by iterating through the
1.1216 + //usable SEPs and stopping at the first one that supports the
1.1217 + //required data type
1.1218 + TUsableSEP SEP;
1.1219 + TBool SEPFound(EFalse);
1.1220 + for (i=0; i<iUsableSEPs.Count(); i++)
1.1221 + {
1.1222 + SEP = iUsableSEPs[i];
1.1223 + if (SEP.iDataType == iA2dpCodecSettings.HeadsetCodecDataType())
1.1224 + {//one of the usable SEPs supports the requested data type
1.1225 + SEPFound = ETrue;
1.1226 + iHeadsetSEID = SEP.iSEID; //we'll use this SEID for now
1.1227 + break;
1.1228 + }
1.1229 + }
1.1230 + iSEPIterator = 0;
1.1231 + iSEPCapabilityEntry = 0;
1.1232 + if (SEPFound)
1.1233 + {
1.1234 + //we've selected a SEP
1.1235 + StateChangeComplete(); //so move on to the next state
1.1236 + }
1.1237 + else
1.1238 + {
1.1239 + //then non of the SEPs have SBC codec capabilites
1.1240 + //or no usable SEPs have been found or SEP may be in use
1.1241 + //since SBC support is mandatory we do not have a suitable SEP
1.1242 + CancelChangeState(KErrCouldNotConnect);
1.1243 + }
1.1244 + }// if (iPotentialSEPs.Count() >= iSEPIterator)
1.1245 + else
1.1246 + {//get the capability of the next SEP
1.1247 + GetRemoteSEPCapability();
1.1248 + }
1.1249 + }
1.1250 + }
1.1251 +
1.1252 +
1.1253 +/**
1.1254 +Function used to return a TAvdtpMediaCodecCapabilities structure
1.1255 +that can be used to configure the SEP at the remote end ie on the headset
1.1256 +The capabilities are used to determine the configuration
1.1257 +need to return by pointer rather than by ref as TAvdtpMediaCodecCapabilities is abstract
1.1258 +*/
1.1259 +TAvdtpMediaCodecCapabilities* CGAVDPStateMachine::RemoteCodecConfiguration()
1.1260 + {
1.1261 + TAvdtpMediaCodecCapabilities* codecCaps = NULL;
1.1262 + TAvdtpMediaCodecCapabilities* codecConfiguration = NULL;
1.1263 +
1.1264 + //first get the capabilities of the codec
1.1265 + TInt error = CodecCaps(codecCaps);
1.1266 + if (!error)
1.1267 + {//and use the capabilities to get a valid remote codec configuration
1.1268 + codecConfiguration = iA2dpCodecSettings.UpdateRemoteCodecConfiguration(*codecCaps);
1.1269 + }
1.1270 +
1.1271 + return codecConfiguration;
1.1272 + }
1.1273 +
1.1274 +
1.1275 +/**
1.1276 +Internal function to configure the local SEP
1.1277 +*/
1.1278 +TInt CGAVDPStateMachine::ConfigureLocalSEP()
1.1279 + {
1.1280 + TInt err = iGavdp.BeginConfiguringLocalSEP(iSymbianDeviceSEID);
1.1281 + if (err == KErrNotFound)
1.1282 + {
1.1283 + //could be a problem with the local SEP no longer being registered
1.1284 + //so register and try again
1.1285 + err = RegisterLocalSEP();
1.1286 + if (!err)
1.1287 + {
1.1288 + err = iGavdp.BeginConfiguringLocalSEP(iSymbianDeviceSEID);
1.1289 + }
1.1290 + }
1.1291 + if (!err)
1.1292 + {//configure local SEP - we only advertise one local SEP with SBC support
1.1293 + //in future when capability structures are defined for mp3,AAC,ATRAC3
1.1294 + //then these can also be advertised as local SEPs
1.1295 + TAvdtpMediaTransportCapabilities media;
1.1296 + err = iGavdp.AddSEPCapability(media);
1.1297 +
1.1298 + if (!err)
1.1299 + {
1.1300 + CA2dpLocalCodecCapabilities* localCodecCapabilities = NULL;
1.1301 + TRAP(err, localCodecCapabilities = CA2dpLocalCodecCapabilities::NewL())
1.1302 + if (!err)
1.1303 + {
1.1304 + TAvdtpMediaCodecCapabilities* localSEPCapability = localCodecCapabilities->LocalCodecCapabilities(iA2dpCodecSettings.HeadsetCodecDataType());
1.1305 + if (localSEPCapability)
1.1306 + {
1.1307 + err = iGavdp.AddSEPCapability(*localSEPCapability);
1.1308 + }
1.1309 + else
1.1310 + {
1.1311 + err = KErrNoMemory;
1.1312 + }
1.1313 + delete localCodecCapabilities;
1.1314 + localCodecCapabilities = NULL;
1.1315 + }
1.1316 + }
1.1317 + }
1.1318 + return err;
1.1319 + }
1.1320 +
1.1321 +
1.1322 +/**
1.1323 +Internal function to configure the remote SEP ie the headset
1.1324 +
1.1325 +If the SEP has never been configured before then the transport caps are added
1.1326 +If we are doing a reconfigure of the remote SEP then just the codec caps are added
1.1327 +*/
1.1328 +TInt CGAVDPStateMachine::ConfigureRemoteSEP()
1.1329 + {
1.1330 + TInt err = iGavdp.BeginConfiguringRemoteSEP(iHeadsetSEID, iSymbianDeviceSEID);
1.1331 + if (!err)
1.1332 + {
1.1333 + if ((iInitialState.State() < TGAVDPState::EConfigured)||(iChangeOfSelectedHeadsetSEP))
1.1334 + {//then this SEP has never been configured before
1.1335 + //in which case we need to configure it with transport capabilities
1.1336 + //note that if the SEP has been configured before ie the above condition
1.1337 + //is false then we are performing a reconfiguration and are not allowed
1.1338 + //to reconfigure the media transport capabilities
1.1339 + TAvdtpMediaTransportCapabilities avdtpMediaTransportCapabilities;
1.1340 + err = iGavdp.AddSEPCapability(avdtpMediaTransportCapabilities);
1.1341 + iChangeOfSelectedHeadsetSEP = EFalse;//reset
1.1342 + }
1.1343 + if (!err)
1.1344 + {
1.1345 + TAvdtpMediaCodecCapabilities* codecConfiguration = RemoteCodecConfiguration();
1.1346 + //note we are setting a configuration here not a capability
1.1347 + if (codecConfiguration)
1.1348 + {
1.1349 + err = iGavdp.AddSEPCapability(*codecConfiguration);
1.1350 + }
1.1351 + else
1.1352 + {//we were not able to get a valid configuration
1.1353 + //so abort configuration
1.1354 + err = KErrAbort;
1.1355 + }
1.1356 + }// if (!err)
1.1357 + }
1.1358 + return err;
1.1359 + }
1.1360 +
1.1361 +
1.1362 +/**
1.1363 +Internal function to initiate SEP configuration of both the local and remote SEPs
1.1364 +*/
1.1365 +void CGAVDPStateMachine::ConfigureSEP()
1.1366 + {
1.1367 + if (iHeadsetSEID.IsValid())
1.1368 + {
1.1369 + TInt err;
1.1370 + if (!iLocalSEPConfigured)
1.1371 + {//the local SEP must be configured first before configuring the remote SEP
1.1372 + err = ConfigureLocalSEP();
1.1373 + }
1.1374 + else
1.1375 + {//local SEP is already configured so configure remote SEP
1.1376 + err = ConfigureRemoteSEP();
1.1377 + }
1.1378 + if (err)
1.1379 + {
1.1380 + CancelChangeState(err);
1.1381 + }
1.1382 + else
1.1383 + {
1.1384 + iGavdp.CommitSEPConfiguration();
1.1385 + }
1.1386 + }
1.1387 + else
1.1388 + {//we've requested to configure a SEP before we have
1.1389 + //a valid SEP to configure
1.1390 + CancelChangeState(KErrNotReady);
1.1391 + }
1.1392 + }
1.1393 +
1.1394 +
1.1395 +/**
1.1396 +MGavdpUser callback to confirm that the SEP configuration has been acepted
1.1397 +This callback should occur for both the local SEP and the remote SEP
1.1398 +*/
1.1399 +void CGAVDPStateMachine::GAVDP_ConfigurationConfirm()
1.1400 + {
1.1401 + TInt err = KErrNone;
1.1402 + if (!iLocalSEPConfigured)
1.1403 + {//the local SEP is configured first so this call back must be from
1.1404 + //a local SEP configuration
1.1405 + iLocalSEPConfigured = ETrue;
1.1406 + //now configure the remote SEP
1.1407 + err = ConfigureRemoteSEP();
1.1408 + if (!err)
1.1409 + {
1.1410 + iGavdp.CommitSEPConfiguration();
1.1411 + }
1.1412 + else
1.1413 + {
1.1414 + CancelChangeState(err);
1.1415 + }
1.1416 + }
1.1417 + else
1.1418 + {
1.1419 + //local and remote SEPs now configured
1.1420 + TInt err = iGavdp.Listen();
1.1421 + //note that if there is an error above
1.1422 + // there is not much we can do so ignore it
1.1423 + StateChangeComplete();
1.1424 + }
1.1425 + }
1.1426 +
1.1427 +
1.1428 +/**
1.1429 +Internal function to request a bearer RSocket in order to stream audio to the headset
1.1430 +*/
1.1431 +void CGAVDPStateMachine::CreateBearerSocket()
1.1432 + {
1.1433 + //then we need to request for one from the remote SEP
1.1434 + //this reference code does not support reporting and recovery channels
1.1435 +
1.1436 + if (!iBearerSocket.SubSessionHandle())
1.1437 + {//we don't already have a bearer socket, create one - note no reporting and recovery implementation
1.1438 + TInt err = iGavdp.CreateBearerSockets(iHeadsetSEID, EFalse, EFalse);
1.1439 + if (err)
1.1440 + {
1.1441 + CancelChangeState(err);
1.1442 + }
1.1443 + }
1.1444 + else
1.1445 + {
1.1446 + //we already have a bearer socket so no need to create a new one
1.1447 + //just complete the state change
1.1448 + StateChangeComplete();
1.1449 + }
1.1450 + }
1.1451 +
1.1452 +
1.1453 +/**
1.1454 +MGavdpUser callback to supply the RSocket used to stream audio to the headset
1.1455 +
1.1456 +This callback can occur either via a direct request from the headset or in response
1.1457 +to a CreateBearerSocket
1.1458 +
1.1459 +@see MGavdpUser
1.1460 +*/
1.1461 +void CGAVDPStateMachine::GAVDP_BearerReady(RSocket aSocket, const TAvdtpSockAddr& /*aAddress*/)
1.1462 + {
1.1463 + //This call back can occur without a prior call to CreateBearerSocket
1.1464 + iBearerSocket = aSocket;
1.1465 + if ((iCurrentState == TGAVDPState::EConfigured)&&(iStateChangeInProgress))
1.1466 + {//we've completed the state
1.1467 + StateChangeComplete();
1.1468 + }
1.1469 + // else this came from the headset without a call to RGavdp::CreateBearerSockets
1.1470 + }
1.1471 +
1.1472 +
1.1473 +/**
1.1474 +Function to return an array of usable SEPs on the headset.
1.1475 +By 'usable' we mean the SEP supports audio, has media transport caps, is not in use,
1.1476 +has a supported audio codec and the audio codec is supported by the symbianOS device
1.1477 +@return array of usable SEPs
1.1478 +*/
1.1479 +RArray<TUsableSEP>& CGAVDPStateMachine::UsableSEPs() const
1.1480 + {
1.1481 + return const_cast<RArray<TUsableSEP>&>(iUsableSEPs);
1.1482 + }
1.1483 +
1.1484 +
1.1485 +/**
1.1486 +Function to return the bearer socket used to stream audio to the headset
1.1487 +@return socket
1.1488 +*/
1.1489 +RSocket& CGAVDPStateMachine::BearerSocket() const
1.1490 + {
1.1491 + return const_cast<RSocket&>(iBearerSocket);
1.1492 + }
1.1493 +
1.1494 +
1.1495 +/**
1.1496 +Function to return the headset BT address
1.1497 +@return headset BT address
1.1498 +*/
1.1499 +TBTDevAddr& CGAVDPStateMachine::BTAddress() const
1.1500 + {
1.1501 + return const_cast<TBTDevAddr&>(iBTDevAddr);
1.1502 + }
1.1503 +
1.1504 +
1.1505 +/**
1.1506 +Function to return the SEPCapability for the codec settings
1.1507 +used by CA2dpBTHeadsetAudioInterface to determine the audio settings
1.1508 +ie sample rate / stereo support.
1.1509 +aCodecCaps is set with the TAvdtpMediaCodecCapabilities of the codec in use
1.1510 +if no codec has been specified via the Reconfigure() function then
1.1511 +the codec defaults to SBC
1.1512 +returns KErrNotReady if no SEP capablities have been obtained from the SEP
1.1513 +return KErrNotSupported if the codec type is not known
1.1514 +aCodecCaps Note that ownership is not transferred to the calling class.
1.1515 +
1.1516 +@param aCodecCaps The pointer points to a codec capabilities structure
1.1517 +
1.1518 +@return SymbianOS error code
1.1519 +*/
1.1520 +TInt CGAVDPStateMachine::CodecCaps(TAvdtpMediaCodecCapabilities*& aCodecCaps) const
1.1521 + {
1.1522 + TInt err = KErrNotReady;
1.1523 + TAvdtpServiceCapability* avdtpServiceCapability;
1.1524 + TFourCC dataType;
1.1525 + for (TUint i=0; i<iSEPCapabilities.Count(); i++)
1.1526 + {
1.1527 + avdtpServiceCapability = iSEPCapabilities[i];
1.1528 + if (avdtpServiceCapability->Category() == EServiceCategoryMediaCodec)
1.1529 + {
1.1530 + TAvdtpMediaCodecCapabilities* codecCaps = static_cast<TAvdtpMediaCodecCapabilities*>(avdtpServiceCapability);
1.1531 + switch (codecCaps->MediaCodecType())
1.1532 + {
1.1533 + case EAudioCodecSBC:
1.1534 + dataType.Set(KMMFFourCCCodeSBC);
1.1535 + break;
1.1536 + case EAudioCodecMPEG12Audio:
1.1537 + dataType.Set(KMMFFourCCCodeMP3);
1.1538 + break;
1.1539 + case EAudioCodecMPEG24AAC:
1.1540 + dataType.Set(KMMFFourCCCodeAAC);
1.1541 + break;
1.1542 + case EAudioCodecATRAC:
1.1543 + dataType.Set(KMMFFourCCCodeATRAC3);
1.1544 + break;
1.1545 + default:
1.1546 + err = KErrNotSupported;
1.1547 + break;
1.1548 + }
1.1549 + if (dataType == iA2dpCodecSettings.HeadsetCodecDataType())
1.1550 + {//then we have the capabilities for the selected datatype
1.1551 + aCodecCaps = codecCaps;
1.1552 + err = KErrNone;
1.1553 + break;
1.1554 + }
1.1555 + }
1.1556 + } //for (TUint i=0; i<iSEPCapabilities.Count(); i++)
1.1557 + return err;
1.1558 + }
1.1559 +
1.1560 +
1.1561 +/**
1.1562 +MGavdpUser callback when headset releases stream
1.1563 +
1.1564 +@see MGavdpUser
1.1565 +*/
1.1566 +void CGAVDPStateMachine::GAVDP_ReleaseIndication(TSEID aSEID)
1.1567 + {
1.1568 + if (aSEID == iSymbianDeviceSEID)
1.1569 + {
1.1570 + if (iStateChangeInProgress)
1.1571 + {
1.1572 + CancelChangeState(KErrDisconnected);
1.1573 + }
1.1574 + else
1.1575 + {
1.1576 + iGAVDPStateChangeObserver.GAVDPStateMachineEvent(KErrDisconnected);
1.1577 + }
1.1578 + TInt err = iGavdp.Listen();//can't do much if this errors
1.1579 + }
1.1580 + }
1.1581 +
1.1582 +
1.1583 +/**
1.1584 +MGavdpUser error callback
1.1585 +
1.1586 +@see MGavdpUser
1.1587 +*/
1.1588 +void CGAVDPStateMachine::GAVDP_Error(TInt aError, const TDesC8& /*aErrorData*/)
1.1589 + {
1.1590 + TInt error = ConvertToStandardSymbianOSError(aError);
1.1591 + if (iStateChangeInProgress)
1.1592 + {
1.1593 + CancelChangeState(error);
1.1594 + }
1.1595 + else
1.1596 + {
1.1597 + //error must have occured while no state change was in progress
1.1598 + //this could be due to a problem on the headset eg no longer in range
1.1599 + //Make callback on a2dpBTHeadsetIf so it can reset back to the idle state
1.1600 + iGAVDPStateChangeObserver.GAVDPStateMachineEvent(error);
1.1601 + }
1.1602 + //start listening for connect event from headset
1.1603 + TInt err = iGavdp.Listen();//can't do much if this errors
1.1604 + }
1.1605 +
1.1606 +
1.1607 +/**
1.1608 +Internal function to put the headset in the streaming state
1.1609 +*/
1.1610 +void CGAVDPStateMachine::StartStream()
1.1611 + {
1.1612 + //we're only going to start one transport stream
1.1613 + iGavdp.StartStream(iHeadsetSEID);
1.1614 + }
1.1615 +
1.1616 +
1.1617 +/**
1.1618 +MGavdpUser callback in response to StartStream
1.1619 +
1.1620 +@see MGavdpUser
1.1621 +*/
1.1622 +void CGAVDPStateMachine::GAVDP_StartStreamsConfirm()
1.1623 + {
1.1624 + StateChangeComplete();
1.1625 + }
1.1626 +
1.1627 +
1.1628 +/**
1.1629 +Internal function to tell the headset we are suspending the stream
1.1630 +*/
1.1631 +void CGAVDPStateMachine::SuspendStream()
1.1632 + {
1.1633 + //we're only going to suspend one transport stream
1.1634 + iGavdp.SuspendStream(iHeadsetSEID);
1.1635 + }
1.1636 +
1.1637 +
1.1638 +/**
1.1639 +MGavdpUser callback in response to SuspendStream
1.1640 +
1.1641 +@see MGavdpUser
1.1642 +*/
1.1643 +void CGAVDPStateMachine::GAVDP_SuspendStreamsConfirm()
1.1644 + {
1.1645 + StateChangeComplete();
1.1646 + }
1.1647 +
1.1648 +
1.1649 +/**
1.1650 +RunsL for GAVDP state machine
1.1651 +*/
1.1652 +void CGAVDPStateMachine::RunL()
1.1653 + {
1.1654 + if (iStateChangeInProgress)
1.1655 + {
1.1656 + switch (iCurrentState.State())
1.1657 + {
1.1658 + case TGAVDPState::EGAVDPIdle:
1.1659 + ConnectToGAVDP();
1.1660 + break;
1.1661 + case TGAVDPState::EConnectedToGavdp:
1.1662 + DiscoverRemoteSEPs();
1.1663 + break;
1.1664 + case TGAVDPState::ESEPsDiscovered:
1.1665 + GetRemoteSEPCapabilities();
1.1666 + break;
1.1667 + case TGAVDPState::ESEPSelected:
1.1668 + ConfigureSEP();
1.1669 + break;
1.1670 + case TGAVDPState::EConfigured:
1.1671 + CreateBearerSocket();
1.1672 + break;
1.1673 + case TGAVDPState::EGAVDPOpen:
1.1674 + StartStream();
1.1675 + break;
1.1676 + case TGAVDPState::EGAVDPStreaming:
1.1677 + SuspendStream();
1.1678 + break;
1.1679 + default:
1.1680 + Panic(EGavdpStateMachineBadState);
1.1681 + break;
1.1682 + }
1.1683 + }
1.1684 + else
1.1685 + {
1.1686 + //if RunL should get called when no state
1.1687 + //change is in progress eg during a reconfiguration
1.1688 + //then the current state should always be identical to the target state
1.1689 + __ASSERT_DEBUG((iCurrentState == iTargetState), Panic(EGavdpStateMachineBadState));
1.1690 + StateChangeComplete();
1.1691 + }
1.1692 + }
1.1693 +
1.1694 +
1.1695 +/**
1.1696 +Cancel
1.1697 +*/
1.1698 +void CGAVDPStateMachine::DoCancel()
1.1699 + {
1.1700 + TRequestStatus* stat = &iStatus;
1.1701 + User::RequestComplete(stat, KErrCancel);
1.1702 + }
1.1703 +
1.1704 +
1.1705 +
1.1706 +
1.1707 +CGavdpTimeout* CGavdpTimeout::NewL(CGAVDPStateMachine& aGAVDPStateMachine)
1.1708 + {
1.1709 + CGavdpTimeout* self = new(ELeave)CGavdpTimeout();
1.1710 + CleanupStack::PushL(self);
1.1711 + self->ConstructL(aGAVDPStateMachine);
1.1712 + CleanupStack::Pop();
1.1713 + return self;
1.1714 + }
1.1715 +
1.1716 +
1.1717 +void CGavdpTimeout::ConstructL(CGAVDPStateMachine& aGAVDPStateMachine)
1.1718 + {
1.1719 + CTimer::ConstructL();
1.1720 + CActiveScheduler::Add(this);
1.1721 + iGAVDPStateMachine = &aGAVDPStateMachine;
1.1722 + }
1.1723 +
1.1724 +
1.1725 +CGavdpTimeout::CGavdpTimeout() : CTimer(EPriorityLow)
1.1726 + {
1.1727 + }
1.1728 +
1.1729 +
1.1730 +void CGavdpTimeout::StartTimer(TTimeIntervalMicroSeconds32 aTimeInterval)
1.1731 + {
1.1732 + Cancel(); //just in case
1.1733 + After(aTimeInterval);
1.1734 + }
1.1735 +
1.1736 +
1.1737 +void CGavdpTimeout::RunL()
1.1738 + {
1.1739 + //the GAVDP callback has timed out - check the GAVDP state machine
1.1740 + //is in the connected state to cover ourselves in the event of a race
1.1741 + //condition
1.1742 + if ((iGAVDPStateMachine->State() == TGAVDPState::EConnectedToGavdp)||
1.1743 + (iGAVDPStateMachine->State() == TGAVDPState::ESEPsDiscovered))
1.1744 + {
1.1745 + iGAVDPStateMachine->CancelChangeState(KErrTimedOut);
1.1746 + }
1.1747 + }
1.1748 +
1.1749 +
1.1750 +