bluetoothengine/btaudioman/src/basrvpluginman.cpp
changeset 0 f63038272f30
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bluetoothengine/btaudioman/src/basrvpluginman.cpp	Mon Jan 18 20:28:57 2010 +0200
@@ -0,0 +1,172 @@
+/*
+* Copyright (c) 2005-2009 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.
+*  Version     : %version:  1.1.2.2.7 %
+*
+* Contributors:
+*
+* Description: 
+*     Loads/unloads plugins and handles messaging between plugins and server class.
+*
+*/
+
+
+// INCLUDE FILES
+#include <e32std.h>             // User:: ( User class declaration )
+#include <btaccPluginUid.h>
+#include "btaccTypes.h"
+#include "basrvpluginman.h"
+#include "btaccObserver.h"
+#include "btaccPlugin.h"        // Plugin interface
+#include "debug.h"
+#include "btaccParams.h"        // T-class consisting of parameteres sent to plugins
+#include "utils.h"
+
+//  CONSTANTS
+
+// ================= MEMBER FUNCTIONS =======================
+
+// ---------------------------------------------------------
+// NewL
+// ---------------------------------------------------------
+//
+CBasrvPluginMan* CBasrvPluginMan::NewL()
+    {
+    CBasrvPluginMan* self=new(ELeave) CBasrvPluginMan();
+    return self;
+    }
+
+// Destructor
+CBasrvPluginMan::~CBasrvPluginMan()
+    {
+    TRACE_FUNC
+    UnloadPlugins();
+    iPlugins.Close();
+   }
+
+void CBasrvPluginMan::AccInUse()
+    {
+    TRACE_FUNC    
+    TInt count = iPlugins.Count();
+    for (TInt i = 0; i < count; i++)
+        {
+        iPlugins[i]->AccInUse();
+        }
+    }
+    
+void CBasrvPluginMan::AccOutOfUse()
+    {
+    TRACE_FUNC    
+    TInt count = iPlugins.Count();
+    for (TInt i = 0; i < count; i++)
+        {
+        iPlugins[i]->AccOutOfUse();
+        }
+    }
+
+TInt CBasrvPluginMan::AvailablePlugins()
+    {
+    TInt avai = 0;
+    TInt count = iPlugins.Count();
+    for (TInt i = 0; i < count; i++)
+        {
+        avai |= iPlugins[i]->PluginType();
+        }
+    return avai;
+    }
+    
+void CBasrvPluginMan::LoadPluginsL(MBTAccObserver& aObserver)
+    {
+    TRACE_FUNC
+    if (iPlugins.Count())
+        {
+        return;
+        }
+    const TUid KUidBTAccPluginInterface = TUid::Uid(KBTAccPluginInterfaceUid);
+    RImplInfoPtrArray implementations;
+    const TEComResolverParams noResolverParams;
+    REComSession::ListImplementationsL(KUidBTAccPluginInterface, 
+        noResolverParams, 
+        KRomOnlyResolverUid, 
+        implementations);
+    CleanupResetDestroyClosePushL(implementations);
+    const TUint count = implementations.Count();
+    
+    TRACE_INFO((_L("number of implementations of plugin interface: %d"), count))
+    CBTAccPlugin* plugin( NULL );
+    TInt err;
+    for (TUint i = 0 ; i < count; ++i)
+        {
+        CImplementationInformation* impl = implementations[i];
+        TPluginParams params(impl->ImplementationUid(), aObserver); 
+        // If loading a plugin failed,
+        // the consequence is the service provided by this plugin is not available.
+        // Other services that have been successfully loaded are still usable.
+        TRAP( err, plugin = CBTAccPlugin::NewL(params) );
+        if ( !err )
+            {
+            CleanupStack::PushL(plugin);
+            iPlugins.AppendL(plugin);
+            CleanupStack::Pop(plugin);
+            }
+        TRACE_INFO((_L("Load plugin \'%S\', err %d"), &(impl->DisplayName()), err ) );
+        }
+    
+    CleanupStack::PopAndDestroy(&implementations);
+    if (!iPlugins.Count())
+        {
+        LEAVE(KErrNotFound);
+        }
+    }
+
+// ---------------------------------------------------------
+// CBasrvPluginMan::UnloadPlugins
+// ---------------------------------------------------------
+//
+void CBasrvPluginMan::UnloadPlugins()
+    {
+    TRACE_FUNC
+    iPlugins.ResetAndDestroy();
+    REComSession::FinalClose();
+    }
+
+CBTAccPlugin* CBasrvPluginMan::Plugin(TProfiles aProfile)
+    {
+    TInt count = iPlugins.Count();
+    for (TInt i = 0; i < count; i++)
+        {
+        if (iPlugins[i]->PluginType() & aProfile)
+            {
+            return iPlugins[i];
+            }
+        }
+    return NULL; 
+    }
+
+TInt CBasrvPluginMan::AudioLinkLatency()
+	{
+	TRACE_FUNC
+	CBTAccPlugin* plugin = Plugin(EAnyMonoAudioProfiles);
+	
+	if (plugin)
+		{
+		return plugin->AudioLinkLatency();
+		}
+	else
+		{
+		return 0;
+		}
+	}
+
+CBasrvPluginMan::CBasrvPluginMan()
+    {
+    }
+
+// End of file