--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/khronosfws/openmax_al/src/common/xathreadsafety.c	Fri Apr 16 15:29:42 2010 +0300
@@ -0,0 +1,167 @@
+/*
+* Copyright (c) 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.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+#include <stdlib.h>
+#include "xathreadsafety.h"
+
+typedef struct
+{
+    XAImplMutexHandle mutexTable[XATSCount];
+    XAboolean tsEnabled;
+}XAThreadSafetyImpl;
+
+static XAThreadSafetyImpl* threadSafety;
+
+/*
+ * XAresult XAThreadSafety_Init()
+ * Description: Creates mutex table for thread safety support
+ * @return: Success value
+ */
+XAresult XAThreadSafety_Init( XAboolean tsEnable )
+{
+    XAresult ret = XA_RESULT_SUCCESS;
+    XAint32 i = 0;
+    DEBUG_API_A1("->XAThreadSafety_Init - tsEnable:%lu",tsEnable);
+
+    /* Initialize thread safety only once */
+    if ( !threadSafety )
+    {
+        threadSafety = (XAThreadSafetyImpl *)calloc(1,sizeof(XAThreadSafetyImpl));
+        if ( !threadSafety )
+        {
+            DEBUG_ERR("XA_RESULT_MEMORY_FAILURE");
+            DEBUG_API("<-XAThreadSafety_Init");
+            /* memory allocation failed */
+            return XA_RESULT_MEMORY_FAILURE;
+        }
+
+        threadSafety->tsEnabled = tsEnable;
+
+        if ( tsEnable )
+        {
+            for( i = 0; i < XATSCount; i++ )
+            {
+                ret = XAImpl_CreateMutex( &threadSafety->mutexTable[i] );
+                if ( ret != XA_RESULT_SUCCESS )
+                {
+                    break;
+                }
+                DEBUG_INFO_A2("Created %s:%x",MEDIAOBJECTNAME(i), threadSafety->mutexTable[i] );
+            }
+        }
+        else
+        {
+            DEBUG_INFO("Thread safety: disabled.");
+        }
+    }
+
+    DEBUG_API("<-XAThreadSafety_Init");
+    return ret;
+}
+
+/*
+ * XAresult XAThreadSafety_Destroy()
+ * Description: Destroys mutex table created for thread safety support
+ */
+XAresult XAThreadSafety_Destroy()
+{
+    XAresult ret = XA_RESULT_SUCCESS;
+    XAint32 i = 0;
+    DEBUG_API("->XAThreadSafety_Destroy");
+
+    if ( threadSafety )
+    {
+        if ( threadSafety->tsEnabled )
+        {
+            for( i = 0; i < XATSCount; i++ )
+            {
+                DEBUG_INFO_A2("Free %s:%x",MEDIAOBJECTNAME(i), threadSafety->mutexTable[i] );
+                XAImpl_DeleteMutex( threadSafety->mutexTable[i] );
+            }
+        }
+        free( threadSafety);
+    }
+    else
+    {
+        DEBUG_INFO("Thread safety: disabled.");
+    }
+
+    DEBUG_API("<-XAThreadSafety_Destroy");
+    return ret;
+
+}
+
+/*
+ * XAresult XAThreadSafety_Unlock( XAThreadSafetyMediaObjects mediaObject )
+ * Description:
+ * @param XAThreadSafetyMediaObjects mediaObject
+ * @return
+ */
+XAresult XAThreadSafety_Unlock( XAThreadSafetyMediaObjects mediaObject )
+{
+    XAresult ret = XA_RESULT_SUCCESS;
+    DEBUG_API("->XAThreadSafety_Unlock");
+
+    if ( threadSafety )
+    {
+        if ( threadSafety->tsEnabled )
+        {
+            ret = XAImpl_UnlockMutex( threadSafety->mutexTable[mediaObject] );
+            if ( ret == XA_RESULT_SUCCESS)
+            {
+                DEBUG_INFO_A2("Released lock for %s:%x",MEDIAOBJECTNAME(mediaObject), threadSafety->mutexTable[mediaObject] );
+            }
+        }
+    }
+    else
+    {
+        DEBUG_INFO("Thread safety: disabled.");
+    }
+    DEBUG_API("<-XAThreadSafety_Unlock");
+    return ret;
+}
+/*
+ * XAresult XAThreadSafety_TryLock( XAThreadSafetyMediaObjects mediaObject );
+ * Description:
+ * @param XAThreadSafetyMediaObjects mediaObject
+ * @return
+ */
+XAresult XAThreadSafety_TryLock( XAThreadSafetyMediaObjects mediaObject )
+{
+    XAresult ret = XA_RESULT_SUCCESS;
+    DEBUG_API("->XAThreadSafety_TryLock");
+
+    if ( threadSafety )
+    {
+        if ( threadSafety->tsEnabled )
+        {
+            ret = XAImpl_TryLockMutex( threadSafety->mutexTable[mediaObject]);
+            if ( ret == XA_RESULT_SUCCESS)
+            {
+                DEBUG_INFO_A2("Locked %s:%x",MEDIAOBJECTNAME(mediaObject), threadSafety->mutexTable[mediaObject] );
+            }
+        }
+    }
+    else
+    {
+        DEBUG_INFO("Thread safety: disabled.");
+    }
+
+    DEBUG_API("<-XAThreadSafety_TryLock");
+    return ret;
+}
+