mtpdataproviders/mtpplaybackcontroldp/mtpplaybackmpximplementation/src/cmtpplaybackcommandchecker.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mtpdataproviders/mtpplaybackcontroldp/mtpplaybackmpximplementation/src/cmtpplaybackcommandchecker.cpp Tue Aug 31 16:03:15 2010 +0300
@@ -0,0 +1,209 @@
+// Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+/**
+ @file
+ @internalComponent
+*/
+
+#include "cmtpplaybackcommandchecker.h"
+#include "cmtpplaybackcontrolimpl.h"
+
+// Constants
+__FLOG_STMT(_LIT8(KComponent,"PlaybackCommandChecker");)
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+// CMTPPlaybackCommandChecker::NewL
+// ---------------------------------------------------------------------------
+//
+CMTPPlaybackCommandChecker* CMTPPlaybackCommandChecker::NewL(
+ CMTPPlaybackControlImpl& aControlImpl )
+ {
+ CMTPPlaybackCommandChecker* self = new ( ELeave )
+ CMTPPlaybackCommandChecker( aControlImpl );
+ return self;
+ }
+
+// ---------------------------------------------------------------------------
+// CMTPPlaybackCommandChecker::~CMTPPlaybackCommandChecker
+// ---------------------------------------------------------------------------
+//
+CMTPPlaybackCommandChecker::~CMTPPlaybackCommandChecker()
+ {
+ __FLOG(_L8("+CMTPPlaybackCommandChecker::~CMTPPlaybackCommandChecker"));
+ __FLOG(_L8("-CMTPPlaybackCommandChecker::~CMTPPlaybackCommandChecker"));
+ __FLOG_CLOSE;
+ }
+
+// ---------------------------------------------------------------------------
+// CMTPPlaybackCommandChecker::CheckPlaybackCommandContextL
+// ---------------------------------------------------------------------------
+//
+void CMTPPlaybackCommandChecker::CheckPlaybackCommandContextL( TMTPPlaybackCommand aMTPPBCommand )
+ {
+ __FLOG(_L8("+CMTPPlaybackCommandChecker::CheckPlaybackCommandContextL"));
+
+ MTPPlaybackControlImpl().SetMTPPBCmd( aMTPPBCommand );
+
+ switch ( aMTPPBCommand )
+ {
+ case EPlaybackCmdInitObject:
+ case EPlaybackCmdGetVolumeSet:
+ case EPlaybackCmdGetVolume:
+ case EPlaybackCmdGetState:
+ case EPlaybackCmdSetVolume:
+ {
+ __FLOG(_L8("no context check for init object command"));
+ }
+ break;
+ case EPlaybackCmdInitIndex:
+ case EPlaybackCmdSkip:
+ case EPlaybackCmdGetIndex:
+ {
+ if ( MTPPlaybackControlImpl().SongCount() < 0 )
+ {
+ User::Leave( KPlaybackErrContextInvalid );
+ }
+ }
+ break;
+ case EPlaybackCmdPlay:
+ case EPlaybackCmdPause:
+ case EPlaybackCmdStop:
+ case EPlaybackCmdSeekForward:
+ case EPlaybackCmdSeekBackward:
+ case EPlaybackCmdGetObject:
+ case EPlaybackCmdSetPosition:
+ case EPlaybackCmdGetPosition:
+ {
+ switch ( MTPPlaybackControlImpl().CurrentState())
+ {
+ case EPbStateNotInitialised:
+ {
+ User::Leave( KPlaybackErrContextInvalid );
+ }
+ default:
+ break;
+ }
+ }
+ break;
+ default:
+ {
+ __FLOG(_L8("Not support command!"));
+ User::Leave( KPlaybackErrParamInvalid );
+ }
+ break;
+ }
+
+ __FLOG(_L8("-CMTPPlaybackCommandChecker::CheckPlaybackCommandContextL"));
+ }
+
+// ---------------------------------------------------------------------------
+// CMTPPlaybackCommandChecker::CheckAndUpdatePlaybackParamL
+// ---------------------------------------------------------------------------
+//
+void CMTPPlaybackCommandChecker::CheckAndUpdatePlaybackParamL( CMTPPlaybackCommand& aMTPPPBSourceCmd,
+ CMTPPbCmdParam** aMTPPPBTargetParam )
+ {
+ __FLOG(_L8("+CMTPPlaybackCommandChecker::CheckAndUpdatePlaybackParamL"));
+
+ delete *aMTPPPBTargetParam;
+ *aMTPPPBTargetParam = NULL;
+
+ switch ( aMTPPPBSourceCmd.PlaybackCommand())
+ {
+ case EPlaybackCmdInitObject:
+ {
+ const TMTPPbCategory category = aMTPPPBSourceCmd.ParamL().SuidSetL().Category();
+ TFileName suid = aMTPPPBSourceCmd.ParamL().SuidSetL().Suid();
+ *aMTPPPBTargetParam = CMTPPbCmdParam::NewL( category, suid );
+ }
+ break;
+ case EPlaybackCmdInitIndex:
+ {
+ TUint32 songIndex = aMTPPPBSourceCmd.ParamL().Uint32L();
+ if ( songIndex > ( MTPPlaybackControlImpl().SongCount()-1 ))
+ {
+ User::Leave( KPlaybackErrParamInvalid );
+ }
+ *aMTPPPBTargetParam = CMTPPbCmdParam::NewL( songIndex );
+ }
+ break;
+ case EPlaybackCmdSkip:
+ {
+ TInt32 songIndex = MTPPlaybackControlImpl().SongIndex() + aMTPPPBSourceCmd.ParamL().Int32L();
+ TUint32 songCount = MTPPlaybackControlImpl().SongCount();
+
+ if ( songIndex < 0 )
+ {
+ songIndex = ( - songIndex ) % songCount;
+ songIndex = ( songCount - songIndex ) % songCount;
+ }
+ else
+ {
+ songIndex = songIndex % songCount;
+ }
+
+ *aMTPPPBTargetParam = CMTPPbCmdParam::NewL( songIndex);
+ }
+ break;
+ case EPlaybackCmdSetVolume:
+ {
+ TUint32 volume = aMTPPPBSourceCmd.ParamL().Uint32L();
+ if( volume > KPbPlaybackVolumeLevelMax )
+ {
+ User::Leave( KPlaybackErrParamInvalid );
+ }
+ *aMTPPPBTargetParam = CMTPPbCmdParam::NewL( volume );
+ }
+ break;
+ case EPlaybackCmdSetPosition:
+ {
+ TUint32 position= aMTPPPBSourceCmd.ParamL().Uint32L();
+ *aMTPPPBTargetParam = CMTPPbCmdParam::NewL( position );
+ }
+ break;
+ default:
+ {
+ __FLOG(_L8("No param, just cache command"));
+ }
+ break;
+ }
+
+ __FLOG(_L8("-CMTPPlaybackCommandChecker::CheckAndUpdatePlaybackParamL"));
+ }
+
+// ---------------------------------------------------------------------------
+// CMTPPlaybackCommandChecker::CMTPPlaybackCommandChecker
+// ---------------------------------------------------------------------------
+//
+CMTPPlaybackCommandChecker::CMTPPlaybackCommandChecker(
+ CMTPPlaybackControlImpl& aControlImpl )
+ : iMTPPlaybackControl( aControlImpl )
+ {
+ __FLOG_OPEN(KMTPSubsystem, KComponent);
+ }
+
+// ---------------------------------------------------------------------------
+// CMTPPlaybackCommandChecker::MTPPlaybackControlImpl
+// ---------------------------------------------------------------------------
+//
+CMTPPlaybackControlImpl& CMTPPlaybackCommandChecker::MTPPlaybackControlImpl()
+ {
+ return iMTPPlaybackControl;
+ }
+
+