/*

* 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 <stdio.h>

#include <stdlib.h>

#include <assert.h>

#include "xametadatainsertionitf.h"

#define MAX_TAGS 255

/* XAMetadataInsertionItfImpl* GetImpl(XAMetadataInsertionItf self)

 * Description: Validate interface pointer and cast it to implementation pointer.

 */

static XAMetadataInsertionItfImpl* GetImpl(XAMetadataInsertionItf self)

{

    if( self )

    {

        XAMetadataInsertionItfImpl* impl = (XAMetadataInsertionItfImpl*)(*self);

        if( impl && (impl == impl->self) )

        {

            return impl;

        }

    }

    return NULL;

}

/*****************************************************************************

 * Base interface XAMetadataInsertionItf implementation

 *****************************************************************************/

/* XAMetadataInsertionItfImpl_CreateChildNode

 * Description: Creates a new child node for the given parent.

 */

XAresult XAMetadataInsertionItfImpl_CreateChildNode(XAMetadataInsertionItf self,

                                                    XAint32 parentNodeID,

                                                    XAuint32 type,

                                                    XAchar *mimeType,

                                                    XAint32 *pChildNodeID)

{

    XAMetadataInsertionItfImpl *impl = NULL;

    XAresult ret = XA_RESULT_SUCCESS;

    DEBUG_API("->XAMetadataInsertionItfImpl_CreateChildNode");

    impl = GetImpl(self);

    if(!impl || !mimeType || !pChildNodeID )

    {

        DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");

        /* invalid parameter */

        ret = XA_RESULT_PARAMETER_INVALID;

    }

    else

    {

        {

        }

    }

    DEBUG_API("<-XAMetadataInsertionItfImpl_CreateChildNode");

    return ret;

}

/* XAresult XAMetadataInsertionItfImpl_GetSupportedKeysCount

 * Description: A query method to tell if the metadata keys (for writing metadata)

 * can be freely chosen by the application or if they are fixed (for the given node).

 */

XAresult XAMetadataInsertionItfImpl_GetSupportedKeysCount(XAMetadataInsertionItf self,

                                                          XAint32 nodeID,

                                                          XAboolean *pFreeKeys,

                                                          XAuint32 *pKeyCount,

                                                          XAuint32 *pEncodingCount)

{

    XAMetadataInsertionItfImpl *impl = NULL;

    XAresult ret = XA_RESULT_SUCCESS;

    DEBUG_API("->XAMetadataInsertionItfImpl_GetSupportedKeysCount");

    impl = GetImpl(self);

    if(!impl || !pFreeKeys || !pKeyCount || !pEncodingCount )

    {

        DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");

        /* invalid parameter */

        ret = XA_RESULT_PARAMETER_INVALID;

    }

    else

    {

        if( impl->adaptCtx )

            ret = XAMetadataInsertionItfAdapt_GetSupportedKeysCount(

        else

            ret = XA_RESULT_INTERNAL_ERROR;

        }

    }

    DEBUG_API("<-XAMetadataInsertionItfImpl_GetSupportedKeysCount");

    return ret;

}

/* XAresult XAMetadataInsertionItfImpl_GetKeySize

 * Description: Returns the byte size required for a supported metadata

 * key pointed by the given index

 */

XAresult XAMetadataInsertionItfImpl_GetKeySize(XAMetadataInsertionItf self,

                                               XAint32 nodeID,

                                               XAuint32 keyIndex,

                                               XAuint32 *pKeySize)

{

    XAMetadataInsertionItfImpl *impl = NULL;

    XAresult ret = XA_RESULT_SUCCESS;

    DEBUG_API("->XAMetadataInsertionItfImpl_GetKeySize");

    impl = GetImpl(self);

    if(!impl || !pKeySize )

    {

        DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");

        /* invalid parameter */

        ret = XA_RESULT_PARAMETER_INVALID;

    }

    else

    {

        if( impl->adaptCtx )

            ret = XAMetadataInsertionItfAdapt_GetKeySize(

        else

            ret = XA_RESULT_INTERNAL_ERROR;

        }

    }

    DEBUG_API("<-XAMetadataInsertionItfImpl_GetKeySize");

    return ret;

}

/* XAresult XAMetadataInsertionItfImpl_GetKey

 * Description; Returns a XAMetadataInfo structure and associated data

 * referenced by the structure for a supported key

 */

XAresult XAMetadataInsertionItfImpl_GetKey(XAMetadataInsertionItf self,

                                           XAint32 nodeID,

                                           XAuint32 keyIndex,

                                           XAuint32 keySize,

                                           XAMetadataInfo *pKey)

{

    XAMetadataInsertionItfImpl *impl = NULL;

    XAresult ret = XA_RESULT_SUCCESS;

    DEBUG_API("->XAMetadataInsertionItfImpl_GetKey");

    impl = GetImpl(self);

    if(!impl || !pKey )

    {

        DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");

        /* invalid parameter */

        ret = XA_RESULT_PARAMETER_INVALID;

    }

    else

    {

        if( impl->adaptCtx )

            ret = XAMetadataInsertionItfAdapt_GetKey(

        else

            ret = XA_RESULT_INTERNAL_ERROR;

        }

    }

    DEBUG_API("<-XAMetadataInsertionItfImpl_GetKey");

    return ret;

}

/* XAresult XAMetadataInsertionItfImpl_GetFreeKeysEncoding

 * Description: A method to be used in case implementation supports

 * free keys for metadata insertion.

 */

XAresult XAMetadataInsertionItfImpl_GetFreeKeysEncoding(XAMetadataInsertionItf self,

                                                        XAint32 nodeID,

                                                        XAuint32 encodingIndex,

                                                        XAuint32 *pEncoding)

{

    XAMetadataInsertionItfImpl *impl = NULL;

    XAresult ret = XA_RESULT_SUCCESS;

    DEBUG_API("->XAMetadataInsertionItfImpl_GetFreeKeysEncoding");

    impl = GetImpl(self);

    if( !impl || !pEncoding )

    {

        DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");

        /* invalid parameter */

        ret =XA_RESULT_PARAMETER_INVALID;

    }

    else

    {

        if( impl->adaptCtx )

            ret = XAMetadataInsertionItfAdapt_GetFreeKeysEncoding(

        else

            ret = XA_RESULT_INTERNAL_ERROR;

        }

    }

    DEBUG_API("<-XAMetadataInsertionItfImpl_GetFreeKeysEncoding");

    return ret;

}

/* XAresult XAMetadataInsertionItfImpl_InsertMetadataItem

 * Description: Inserts the key/value pair to the specified node of the metadata tree.

 */

XAresult XAMetadataInsertionItfImpl_InsertMetadataItem(XAMetadataInsertionItf self,

                                                       XAint32 nodeID,

                                                       XAMetadataInfo *pKey,

                                                       XAMetadataInfo *pValue,

                                                       XAboolean overwrite)

{

    XAMetadataInsertionItfImpl *impl = NULL;

    XAresult ret = XA_RESULT_SUCCESS;

    DEBUG_API("->XAMetadataInsertionItfImpl_InsertMetadataItem");

    impl = GetImpl(self);

    if( !impl || !pKey || !pValue )

    {

        DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");

        /* invalid parameter */

        ret = XA_RESULT_PARAMETER_INVALID;

    }

    else

    {

        {

            ret = XAMetadataInsertionItfAdapt_InsertMetadataItem(

            impl->currentTags.mdeKeys[impl->currentTags.itemcount] = pKey;

            impl->currentTags.mdeValues[impl->currentTags.itemcount] = pValue;

            impl->currentTags.itemcount++;

        else

            ret = XA_RESULT_INTERNAL_ERROR;

        }

    }

    DEBUG_API("<-XAMetadataInsertionItfImpl_InsertMetadataItem");

    return ret;

}

/* XAresult XAMetadataInsertionItfImpl_RegisterCallback

 * Description: Registers a callback on the object that executes after each of

 * the actual writings of metadata key/value pairs takes place.

 */

XAresult XAMetadataInsertionItfImpl_RegisterCallback(XAMetadataInsertionItf self,

                                                     xaMetadataInsertionCallback callback,

                                                     void *pContext)

{

    XAMetadataInsertionItfImpl *impl = NULL;

    DEBUG_API("->XAMetadataInsertionItfImpl_RegisterCallback");

    impl = GetImpl(self);

    if( !impl )

    {

        DEBUG_ERR("XA_RESULT_PARAMETER_INVALID");

        DEBUG_API("<-XAMetadataInsertionItfImpl_RegisterCallback");

        /* invalid parameter */

        return XA_RESULT_PARAMETER_INVALID;

    }

    if(callback)

    {

        XAAdaptationBase_AddEventHandler( impl->adaptCtx, &XAMetadataInsertionItfImpl_AdaptCb,

                                          XA_METADATAEVENTS, impl );

    }

    else

    {

        XAAdaptationBase_RemoveEventHandler(impl->adaptCtx, &XAMetadataInsertionItfImpl_AdaptCb );

    }

    DEBUG_API("<-XAMetadataInsertionItfImpl_RegisterCallback");

    return XA_RESULT_SUCCESS;

}

/*****************************************************************************

 * XAMetadataTraversalImpl -specific methods

 *****************************************************************************/

/* XAMetadataInsertionItfImpl* XAMetadataInsertionItfImpl_Create()

 * Description: Allocate and initialize MetadataInsertionItfImpl

 */

{

    XAMetadataInsertionItfImpl* self = (XAMetadataInsertionItfImpl*)

        calloc(1,sizeof(XAMetadataInsertionItfImpl));

    DEBUG_API("->XAMetadataInsertionItfImpl_Create");

    if( self )

    {

        /* init variables*/

        self->callback = NULL;

        self->cbcontext = NULL;

        self->cbPtrToSelf = NULL;

        self->currentTags.mdeKeys = calloc(MAX_TAGS,sizeof(XAMetadataInfo*));

        self->currentTags.mdeValues = calloc(MAX_TAGS,sizeof(XAMetadataInfo*));

        self->self = self;

    }

    DEBUG_API("<-XAMetadataInsertionItfImpl_Create");

    return self;

}

/* void XAMetadataInsertionItfImpl_Free(XAMetadataInsertionItfImpl* self)

 * Description: Free all resources reserved at XAMetadataInsertionItfImpl_Create()

 */

void XAMetadataInsertionItfImpl_Free(XAMetadataInsertionItfImpl* self)

{

    DEBUG_API("->XAMetadataInsertionItfImpl_Free");

    assert( self==self->self );

    if(self->callback)

    {

        XAAdaptationBase_RemoveEventHandler(self->adaptCtx, &XAMetadataInsertionItfImpl_AdaptCb );

    }

    XAMetadataAdapt_FreeImplTagList(&(self->currentTags), XA_BOOLEAN_FALSE);

    free( self );

    DEBUG_API("<-XAMetadataInsertionItfImpl_Free");

}

/* With this method, adaptation infroms that tags are written to stream

 */

void XAMetadataInsertionItfImpl_AdaptCb( void *pHandlerCtx, XAAdaptEvent *event )

{

    XAMetadataInsertionItfImpl* impl = NULL;

    XAuint32 idx = 0, nodeID = XA_ROOT_NODE_ID;

    XAboolean result = XA_BOOLEAN_TRUE;

    DEBUG_API("->XAMetadataInsertionItfImpl_AdaptCb");

    impl = (XAMetadataInsertionItfImpl*)pHandlerCtx;

    if(!impl)

    {

        DEBUG_ERR("XAMetadataInsertionItfImpl_AdaptCb, invalid context pointer!");

        DEBUG_API("<-XAMetadataInsertionItfImpl_AdaptCb");

        return;

    }

    if( event && event->eventid == XA_ADAPT_MDE_TAGS_WRITTEN )

    {

        /*here datasize field is used for return value*/

        if(event->datasize != XA_RESULT_SUCCESS)

        {

            DEBUG_ERR_A1("Adaptation failed to write metadata (code %x)!",(int)event->datasize);

            result=XA_BOOLEAN_FALSE;

        }

        /*all tags written, send cb for client to free the memory*/

        for(idx=0;idx<impl->currentTags.itemcount;idx++)

        {

            if(impl->callback)

            {

                impl->callback(impl->cbPtrToSelf, impl->cbcontext,

                               impl->currentTags.mdeKeys[idx],

                               impl->currentTags.mdeValues[idx],

                               nodeID, result);

            }

            impl->currentTags.mdeKeys[idx]=NULL;

            impl->currentTags.mdeValues[idx]=NULL;

        }

        impl->currentTags.itemcount=0;

    }

    else

    {

        DEBUG_INFO("unhandled");

    }

    DEBUG_API("<-XAMetadataInsertionItfImpl_AdaptCb");

}